Loading...
2017 Annual Report e�e� 1950 Water 5 South Tahoe s1 Fublic Utility Di!5trict 1275 Meadow Cr-eSt Drive•South Lake Tahoe o CA 96150-7401 f hone 550 544-64-74•Fax 530 541-0614•www.5tpud.u5 April 1 , 2018 Patty Kouyoumd jian California Regional Water Quality Control Board - Lahontan Region 2501 Lake Tahoe Boulevard South Lake Tahoe, CA 96150 Subject: 2017 Annual Report Dear Ms. Kouyoumdjian, Enclosed is the South Tahoe Public Utility District's annual self-monitoring report for the 2017 calendar year. The District is reporting as required by the Wastewater Reclamation Permit (Board Order R6T-2004-001OA3, WDID No. 6Ao95900700). This report contains our compliance record, sewer connection information, sewer flows, and graphical and tabular presentation of the data collected during 2017. Trend analyses on sample sites from pre-discharge to 2017 are included. Also included is our pretreatment program update. Please give me a call if you have any questions regarding these data. Very trul ours, ; .J Terry Powers �-- Laboratory it ctor cc: Lahontan RWQCB - RB6-Lahontan(aD-waterboards.ca.gov Alpine County Board of Supervisors -ttremayne(a)alpinecountyca.gov Alpine County Health Department, Dr. Richard Johnson - riohnson(a)-alpinecountyca.gov Alpine County Health Department, Dennis Lampson dlampson(a)alpinecountyca.gov Alpine County STPUD Contract Commission — Dr. Richard Harvey rharveyl23(c-D ail.com DAAnnuaIReports\Lahontan Cover Letter-2017.doc WATER RECLAMATION PLANT ALPINE COUNTY 2017 ANNUAL REPORT SpUTH TAFIOF i' wee • 1950 • 'N s S ue��C U7I LITV D15ZaG SOUTH TAHOE PUBLIC UTILITY DISTRICT 2016 ANNUAL PERFORMANCE DATA Table of Contents Wastewater Treatment Plant Pretreatment Program Heavenly Valley Creek Emergency Retention Basin, Treatment Plant & Buried Sludge monitoring Wells Harvey Place Reservoir Indian Creek Reservoir Alpine County Monitoring Soils Alpine County Monitoring Wells Diamond Valley Ranch Monitoring Wells Alpine County Potable Water Wells Alpine County Surface Waters Irrigation Ditches Trihalomethanes (THM) & MTBE Monitoring Test Method for Total Nitrogen & TKN WASTEWATER TREATMENT PLANT WASTEWATER TREATMENT The plant influent flow and loadings and the effluent quality are reported in this section. Tables and graphs are provided to show 2017 monthly results and yearly averages since 1980. There are multiple tables showing similar information. The averages computed in these tables may be different from one another due to the data averaged. Some tables compute the annual average from the monthly averages, while others compute the annual average from the entire data set. 2017 Annual Report 1. Compliance Record: No violations occurred during 2017 2. Wastewater Treatment Flow Information: Permits Item Flow # a. Annual peak-day dry-weather influent flow (mgd) 5.99 b Annual peak-day wet-weather influent flow and associated storm data (mgd) 12.57 c. Maximum month influent flow (mgd) 6.54 d. Annual average influent flow (mgd) 4.40 1. Sewer connection permits issued but not currently used, 25,500 29 (gpd) e. 2. Capacity currently issued/reserved for public agencies 257,500 191 (gpd) 3. Projects issued "will-serve" letters or similar commitment 0 0 f. Estimated influent flow from facilities described if 2e. . 283,000 Estimated remaining available wastewater treatment capacity o g' considering the influent flow estimated in 2f. (See note) 19/o Estimated influent flow parameters listed in 2a through 2d for the coming year • Annual peak-day dry-weather influent flow (mgd) 4.96 h. • Annual peak-day wet-weather influent flow and 8.18 associated storm data (mgd) • Maximum month influent flow (mgd) 6.54 • Annual average influent flow (mgd) 3.52 Notes: Estimated remaining available wastewater treatment capacity is computed by subtracting annual peak-day dry-weather influent flow(2a)plus total flow from permits issued but not used(2f)from wastewater treatment plant design capacity 7.7 mgd and dividing by 7.7 mgd. Annual peak-day dry-weather influent flow,Annual peak-day wet-weather influent flow,and Annual average influent flow for 2018 estimated from linear regression analysis using corresponding flows from the last ten years(2008 through 2017). DAAnnuaIReports\Section.C_Data-2017.doc WASTEWATER FLOWS 2017 Influent Effluent Month Total Max Min Ave Total Max Min Ave Jan 155.19 12.57 3.74 5.01 172.15 8.43 4.20 5.55 Feb 183.21 12.40 3.70 6.54 197.27 8.32 3.87 7.05 Mar 164.41 6.93 4.33 5.30 198.82 8.28 4.63 6.41 Arp 165.16 6.56 4.85 5.51 184.49 7.99 4.52 6.15 May 146.61 5.99 4.09 4.73 158.86 6.11 4.35 5.12 June 129.35 4.79 3.99 4.31 136.84 8.90 0.00 4.56 July 137.37 5.39 4.01 4.43 145.81 5.64 4.20 4.70 Aug 118.73 4.54 3.21 3.83 126.64 4.79 3.16 4.09 Sep 102.19 4.62 2.96 3.41 108.61 7.13 0.04 3.62 Oct 92.14 3.40 2.39 2.97 99.63 3.89 2.65 3.21 Nov 97.30 4.84 2.66 3.24 108.09 6.68 0.99 3.60 Dec 109.05 4.78 2.96 3.52 117.05 5.13 3.15 3.78 Total 1,600.71 1)754.26 Maximum 183.21 12.57 6.54 198.82 8.90 7.05 Minimum 92.14 2.39 2.97 99.63 0.00 3.21 Average 133.39 4.40 146.19 4.82 Note: Total flows in MG; Max, Min and Ave flows in MGD. Maximum Flow Report. 2017 Wet Weather Maximum Influent Flow: 01/08/2017 12.57 MG Dry Weather Maximum Influent Flow: 05/06/2017 5.99 MG Influent Precipitation Date Day MG Inch Type Comments Wet Weather 03/21/2017 Tue 6.93 1.00 Rain 01/09/2017 Mon 7.41 1.21 Snow 02/21/2017 Tue 7.41 1.16 Snow 02/11/2017 Sat 8.11 02/20/2017 Mon 9.32 2.74 Rain 02/07/2017 Tue 11.36 2.27 Rain 02/08/2017 Wed 11.38 1.10 Rain 02/09/2017 Thu 12.25 2.16 Rain 02/10/2017 Fri 12.40 1.62 Snow 01/08/2017 Sun 12.57 3.99 Rain Maximum Wet Weather Flow Dry Weather 05/16/2017 Tue 5.04 0.02 Rain 05/17/2017 Wed 5.10 07/04/2017 Tue 5.15 05/28/2017 Sun 5.17 07/02/2017 Sun 5.34 05/07/2017 Sun 5.35 0.2 Rain 07/03/2017 Mon 5.39 05/05/2017 Fri 5.41 05/01/2017 Mon 5.65 05/06/2017 Sat 5.99 1.06 Snow Maximum Dry Weather Flow D:\AnnualReports\Max-Flow-Annual-Report-2017.xis PLANT LOADINGS for 2017 Change 2016 2017 % Influent Flow, MG 1,279.33 1,600.71 25.12 COD (mg/1) COD (Ibs/yr) BOD (mg/1) 228 204 -10.25 BOD (Ibs/yr) 2,428,226 2,726,721 12.29 SS (mg/1) 193 170 -11.89 SS (Ibs/yr) - 2,063,681 2,275,049 10.24 . NH3-N (mg/1) 26.12 21.48 -17.74 NH3-N (Ibs/yr) 278,655 286,801 2.92 Total P (mg/1) 5.25 4.32 -17.67 Total P (Ibs/yr) 56,015 57,705 3.02 RAW INFLUENT CHARACTERISTICS for 2017 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Yearly COD Max: Min: Ave: w BOD Max: 287 189 184 163 223 222 252 287 276 260 311 316 316- Min: 91 56 92 111 112 180 216 206 228 231 206 230 56 Ave: 190 140 148 134 161 197 237 240 256 242 242 264 204 SS Max: 202 176 158 141 189 200 256 262 268 250 253 242 268 Min: 77 57 101 105 100 136 177 1-68 188 180 138 136 57 Ave: 155 129 127 118 142 163 206 206 220 206 182 191 170 N H3-N Max: 21.0 17.0 17.5 14.9 18.7 25.8 32.9 31.3 32.5 29.1 24.2 28.3 32.9 Min: 13.5 11.7 10.8 11.2 1-3.1 20.2 26.8 - 26.7 25.3 21.5 22.0 21.1 10.8 Ave: 18.2 14.3 13.9 13.0 15.7 23.9 29.1 29.1 27.4 26.2 23.1 23.9 21.5 Total P Max: 3.90 4.02 3.18 3.11 3.80. 4.82 5.94 5.86 5.26 5.22 5.30 4.98- 5.94 Min: 3.66 1.62 2.70 2.47 3.51 4.30 5.26 5.10 4.62 4.70 4.38 4.82 1.62 Ave: 3.78 3.01 3.03 2.79 3.65 4.56 5.66 5.53 . 5.03 4.96 4.97 4.90 4.32 Note: Results expressed as mg/I RAW INFLUENT ANNUAL TRENDS <---FLOW---> Total Daily COD BOD SS NH3-N NO3-N Total-P CI TDS Year MG MGD mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L 80 1,585.3 4.30 368 170 139 22.6 0.056 8.30' 29.9 246 r 81 1,467.4 4.00 397 161 148 22.8 0.053 8.37 27.6 245 82. 1,085.1 4.60 369 157 129 20.4 0.092 7.17 28.0 230 83 1,612.9 4.42 344 153 126 .18.4 0.096 6.71 28.2 231 84 1,493.0 4.08 406 161 135 ` 21.0 0.076 7.45 . 29.0 231 85 1,464.8 4.01 412' 177 143 21.3 0.069 7.82 30.8 245 86 1,573.4 4.32 353. 148 117 19.1 . 0.101 6.73. 29.4 237 87 1,551.2 4.25 388 165 132 21.0 1.497 6.99 31.1 252 88 1,501.4 4.10 407. 197 134 23.2 0.040 7.34 35.5 257 89 1,652.3 4.52 430 174 134 20.8 0.135 6.80 38.0, 243 90 1,573.6 4.31 534 212 185 21.9 0.072 7.13 34.7 268 91 1,401.1 3.83 418 182 158 21.1 0.219 7.00 39.5 260 92 1,438.3 3.93 428 193 162 21.2 0.165 6.93 37.3 265 93 1,587.9 4.35 420 203 149 20.1 0.069 5.50 35.3 261 94 1,464.6 4.01 434 205 1172 19.9 0.065 5.76 39.2 265 95 1,694.8 4.64 406 169 144 18.9 0.268 5.13 35.5 251 96 1,787.4 4.88 381 169 139 17.4 0.202 4.65 34.5 233 97 1,766.1 4.84 389 162 144 18.2 0.144 4.67 34.9 238 98 1,719.1 4.71 404 175 157 18.0 0.226 4.67 36.1 236 99 1,774.2 4.86 397 173 154 18.6 0.410 4.63 35.8 237 00 1,774.3 4.85 400 171 152 19.2 0.447 4.95 39.4 249 01 1,586.0 4.34 440, 191 174 19.5 0.786 5.40 42.1 263 02 1,659.5 4.55 406 176 151 18.4 0.451 4.84 40.6 256 03 1,552.9 4.25 426 187 156 20.2 0.266 5.32 41.6 256 04 1,563.5 4.27 478 207 196 21.9 0.210 5.28 37.8 261 05 1,602.1 4.39 434 192 164 20.4 0.132 4.82 35.8 251 06 1,682.2 4.61 405 183 156 20.4 0.043 4.97 35.6 233 07 1,471.3 4.03 463 200 170 21.6 0.1.69 5.24 34.6 250 08 1,454.3 3.97 489 206 165 23.4 0.072 5.47 38.6 253 09 1,416.0 3.88 492 220 176 23.8 0.028 5.44 37.7 250 10 1,424.2 3.90 478 211 178 22.2 0.130 5.19 39.7 248 11 1,526.8 4.1.8 395 188 168 19.8 0.350 4.28 37.9 240 12 11333.3 3.64 200 166 23.6 0.061 4.62 38.3 246 13 1,275.0 3.49 230. 194 25.1 0.053 5.14 36.5 247 14 1,191.3 3.26 244 211 25.9 0.031 5.47 38.4 254 15 1,110.9 3.04 265 215 28.1 0.027 5.65 40.7 267 16 1,279.3 3.49 221 193 26.3 0.061 5.36 40.9 252 17 1,600.7 4.40 207 171 21.4 0.102 4.32 453 250 Maximum 1,787.4 4.88 534 265 215 28.1 1.497 8.37 45.3 268 Minimum 1,110.9 3.04 344 148 117 17.4 0.027 4.28 27.6 230 Average 1,534.1 4.20 418 190 159 21.2 0.197 5.83 36.1 249 #Years 38 38 32 38 38 38 38 38 38 38 RAW INFLUENT Influent Flows Raw Influent Annual Trends Annual Trends 8 2,400 600 7 2,100 500 6 1,800 o 5 1,500 400 C9 J 2 4 1,200 IM 300 > E - Q 3 t 900 L 200 , 2 600 1 300 100 0 80 81 82 83 84 85 86 87 88 89 90 9192 93 94 95 96 97 9B 99 00 0102 03.04 05 06 07 08 09 10 11 12 13 14 15 16 17 0 o t 0 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 a --i—Daily Ave MGD f Yearly Total MG --�-COD --4—BOD —Ar—SS Ammonia-Nitrogen Total Phosphorus Annual Trends Annual Trends 30 10 9 . 25 8 20 7 6 J J 15 5 E E 4 10 3 5 2 1 0 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 0 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 RAW INFLUENT Chlorides &TDS Chemical Oxygen Demand (COD) Annual Trends Annual Trends 100 400 800 90 360 700 80 320 70 280 600 lm &Ak J E 60 240 500 rn V 50 200 J c rn 400 ' 40 160 t� 30 120 300 20 80 200 10 40 100 e 0 s . e •i c t a 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 0 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 -ram Chlorides ---*--TDS Linear(Chlorides) Linear(TDS) Biochemical Oxygen Demand (BOD) Suspended Solids (SS) Annual.Trends Annual Trends 400 300 350 250 300 200 250 J J - CIO 200 rn 150 E 150 100 100 50 50 0 0 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 80 81 82 83 04 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 BIOCHEMICAL OXYGEN DEMAND UNIT PROCESS PERFORMANCE 2017 Removal Month Raw Primary Sec Final % January 190 135 16.5 7.13' 96 February 140 96 . 16.5 7.38 95 March 148 105 14.7 8.10 95 April - 1.34 85 11.8 6.90 95 May 161 97 17.0 8.66 95 June 197 130 20.1 7.52 96 July 237 169 28.6 9.24 96 August -240 173 30.6 7.35 97 September 256 164 34.7 7.11 97 October 242 180 49.7 5.76 98 November 242 157 22.1 7.83 97 December 264 175 15.6 7.20 97 12 Month Ave 204 139 .23.2 7.52 96 % Removal 32 83 68 96 Biochemical Oxygen Demand Percent Removal 100 An 90 c 80 E m 70 0 60 50 Jan Feb Mar Apr. May Jun Jul Aug Sep Oct. Nov Dec —�Final Effluent Linear(Final Effluent) SUSPENDED SOLIDS UNIT PROCESS PERFORMANCE 2017 Removal Month Raw', Primary Sec Final % January 1-55 91.3 12.1 3.63 98 February 129 61.8. 10.0 3.62 97 March 127 86.0 11'.0 4.06 97 April 118 74.0 9.3 2.39' 98 May 142 70.0 14.5 3.62 97 June - 1.63 86.6 19.2 7.08 96 July 206 92.0 17.1 4.66 98 August 206 113.9 16.1 3.51 .98 September 220 97.5 .14.5 2.87 99 October 206 97.3 12.0 2.65 99 November., 1,82 93.3 13.6 3.38 98 December 191 94.9 13.5 3.13 98 12 Month Ave 170 88.2 13.6 3.72, 98 % Removal 48 85 73. 98 Suspended Solids Percent Removal 100 90 80 0 E as 70 a 60 50 Jan Feb Mar Apr May Jun Jule Aug Sep Oct Nov Dec -�Final Effluent Linear(Final.Effluent) FINAL EFFLUENT ANNUAL TRENDS <---FLOW---> Total Total. Daily COD BOD SS NH3-N NO3-N TKN. Total-P Cl TDS Turbidity Cl2 Coliforms Year MG MGD mg/L mg/L- mg/L mg/L mg/L mg/L mg/L mg/L mg/L NTU mg/L Total Fecal/E.coli pH 80 1,418.20 4.32 22.0 3.0 2.0 5.5 5.75 0.40 148 551. 0.7 2.8 7.38 81 1,354.60 3.90 20.0 2.0 .2.0 3.3 13.47 0.83 80 455 0.9 0.7 7.74 82 1,807.90 5.10 23.0 4.0 4.0 3.1 7.87 0.81 88 .410 1.8 2.6 7.65 83 1,737.60 4.85 18.0 2.0 2.0 1.0 8.50 . 0.72 94 426 1.0 1.8 7.86 84 1,566.70 4.33 16.0 2.0 1.0 1.6 8.24 0.39 103 436 0.7 1.8 7.65 85 1,532.40 4.24 20.0 2.0 3.0 4.5 5.15 0.17 92 395 1.1 4.9 7.59 86 1,660.50 4.59 17.0 2.0 2.0 5.3 4.95 0.20 82 341 1.0 4.9 7.12 87 1,657.20 4.81 19.0 2.0 4.0 7.7 4.83 0.23 117 452 1.4 3.9 7.25 88 1,61990 4.42 14.0 2.0 3.0 6.6 9.29 0.12- 136' 480 1.0 2.8 7.21 89 1,769.70 4.89 40.0 6.0 _ 5.0. 13.9 4.93 15.6 3.80 7.6 326 2.5 _13:6 2.9 2.0 7.10 90 1,697.30 4.76 37.0 6.0 4.0 8.4 8.39 10.1 3.80 83 387 2.3 14.6 2.0 2.0 7.30 . 91 1,610.80 4.46 37.0 6.0 4.0 5.9 9.71 '7.8 3.55 92 367 2.6 10.3 2.0 2.0 7.35 92 1,608.40 4.39 41.0 7.0 4.0 9.6 6.46 11.2., 5.05 64 289 3.1 -4.4 3.7 2.1 7.32 93 1,795:00 .4.94 51.0 8.0 4.0 13.8 7.03 15.6 3.79 60 266 3.1 5.3 2.1 2.0 7.32 94 1,638.20 4.50 43.1 7.6 3.8 20.6 1.30 22.1 3.21 59- 253 2.9 4.1 3.3 2.0 7.41 95 1,925.70 5.27 39.4 7.4 5.0 20.5 .0.03 21.1 2.69 51 236 2.6 4.4 2.2 2-0 7.46 96 1,965.80 5.37 37.3 7.0 4.4 18.6 0.13 20.6 2.50 44 221 2.5 4.0 2.1 2.0 7.64 97 1,872.30 5.12 37.0 6.9 3.7 19.3 0.25 20.7 2.59 50 226 2.8 6.1 2.1 2.0 7.62 98 1,693.40 4.64 35.6 6.9 4.0 18.6 0.28 21.1 2.56 48 227 2.6 4.6 2.1 2.0 7.53 99 1,742.20 4.78 34.8 6.5 3.1 19.3 0.16 19.8 2.65 49 220 2.4 4.2 2.8 2.0 7.49 00 1,685.90 4.74 42.4 7.9 3.9 20.7 0.04 20.9 2.55 53 226 2.8 4.5 2.1 2.0 7.49 01 1,565.40 4.29 46.9 8.7 5.1 19.1 0.54 21.6 2.87 58 241 4.5 5.2 2.0 2.0 7.43 02 1,581.80 4.33 41.2 6.8 3.0. 19.8 0.64 21.6 2.79 55 231 3.7 5.5 2.0 2.0 7.44 03 1,537.50 4.21 45.9 7.8 3.3 22.2 0.10 24.2 2.83 57 240 4.1 5.7 2.1 2.0 7.54 04 1,483.30 4.05 47.4 7.9 3.8 23.1 -0.04 26.3 3.19 56 242 4.8 6.0 2.1 2.0 7.47 05 1,496.68 4.21 44.9 7.4 3.5 21.1 0.74 '21.7 3.06 51 250 .4.3 . 6.2 2.0 2.0 7.69 06 1,588.08 4.35 47.8 6.6 2.7 21.2 0.07 21.7 3.09 48 242- 4.4 6.0 2.0 2.0 7.69 07 1,380.03 3.78 47.5 7.5 3.3 22.2 0.44 24.5 3.38 50 255 4.4 6.5 2.0 2.0 7.70 08 1,343.14 3.67 40.5 6.0 2.9 20.2 1.60 21.5 3.61 54 255 4.1 5.3 2.0 2.0 7.64 09 1,455.20 3.98 45.7 8.6 3.1 21.9 1.02 22.8 3.66 50 250 4.5 6.1 2.2 1.9 7.61 10 1,500.48 4.11 44.6 5.5 3.0 22.3 0.88 25.0 3.38 50 246 3.5 6.3 1.9 1.8 7.70 11 1,616.50 .4.43 40.6 6.7 3.7 21.5 0.47 30.3 2.75 46 238 3.3 5.5 1.9 1.8 7.71 12 1,445.96 3.95 9.0 2.7 22.4 0.79 26.1 2.88 49 242 3.4 5.4 6.4 6.2 7.71 13 1,409.31 .3:86 6.5 2.7 24.4 0.53 27.8 3.13 49 250 3.6 6.4 2.0 1.8 7.70 14 1,329.45 3.65 7.9 2.2 25.8 0.57 29.1 3.32 52 253 3.4 5.6 2.1 1.8 7.65 15 1,247.60 3.42 6.3 2.7 25.2 1:34 28.5 3.63 52 263 4.0 6.1 254.2. 48.4 7.47 16 1,410.41 3.85 7.4 3.9 23.9 0.92 28.2 3.34 58 269 3.9 9.3 2.1 -1.5 7.79 17 1,754.26 4.82 7.5 3.6 23.0 0.12 26.5 2.78 53 245 3.5 6.4 1.0 1.0 7.74 Permit Max 300 45 60 20 240' Permit Ave 60 30 30 10 232. Maximum 1,965.80 5.37 51.0 9.0 5.1 25.8 13.47 30.3 5.05 148 551 4.8 14.6 254.2 48.4 7.86 Minimum 1,247.60- 3.42 14.0 2.0 1.0 1.0 0.03 7.8 0.12 44 220 0.7 0.7 1.0 1.0 7.10 Average 1,592.23 4.40 35.6 6.0 3.3 16.0 3.09 21.9 2.53 67 300 2.9 5.5 11.0 3.7 7.53 #Years 38 38 32 38 38 88 38 29 38 38 38 38 38 29 29 38 FINAL EFFLUENT Effluent Flows Chemical Oxygen Demand Annual Trends Annual Trends 10 3,000 60 9 2,700 8 2,400 50 7 2,100 0 6 1,800 40 L1 5 A A 1,500 J Q t 4 1,200 30 p 3 900 2 600 20 1 300 10 � 0 c 1 5 p p 8081828384858687888990919293949596979899000102030405060708091011121314151617 0 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 -�Daily Ave MGD --41-Yearly Total MG Biochemical Oxygen Demand Suspended Solids Annual Trends Annual Trends 30.0 30.0 25.0 25.0 20.0 20.0 J J CD 15.0 15.0 E E 10.0 10.0 5.0 5.0 ]"AV jlijjjj 0.0 0.0 80 8182 83 84 85 86 87 88 89 90 9192 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 091011 121314151617 80 8182 83 84 85 86 87 88 89 90 9192 93 94 95 9697 98 99 00 0102 03 04 05 06 07 08 091011 121314151617 FINAL EFFLUENT Ammonia-Nitrogen Total Phosphorus Annual Trends Annual Trends 30 10 9 25 $ 20 7 6 a� 15 e c� 5 E 4 10 3 5 2 0 0 80 8182 83 84 85 86 87 88 89 90 9192 93 94 95 96 97 98 99 00 0102 03 04 05 06 07 08 09 10 11 121314151617 80 8182 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 121314151617 Nitate-Nitrogen Chlorides &TDS Annual Trends Annual Trends 20 350 700 300 600 15 250 500 _j IM E 200 400 _j -01a v� 1 v 150 300 100 200 AN 50 100 0 0 808182838485868786 8990919293949596979899000102030405060708091011121314151617 0 80 8182 83 84 85 86 87 88 89 90 9192 93 94 95 96 97 98 99 00 0102 03 04 05 06 07 08 09 10 1112 13 14 15 16 17 -Ar--Chlorides TDS FINAL EFFLUENT Turbidity Total Chlorine Annual Trends Annual Trends 20 20 15 15 J z10 5 5 .JN Y 0 0 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 091011 121314151617 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 0102 03 04 05 06 07 08 09 10 11 121314151617 pH Annual Trends 11 10- 9 8 a 7 6 5 4 80 8182 83 84 85 86 87 88 89 90 9192 93 94 95 96 97 98 99 00 0102 03 04 05 06 07 08 09 10 1112 13 14 15 16 17 Annual Metals Report Raw Influent Ca' Mg K Na Al As Ba Be Ag Cd Cr Cu 01/21/2010 17.1 4.11 10.6 41.7 450 2.01 <2 <10 <2 2 28.2 04/08/2010 19 4.3 9.7 39 500 1.8 34 <1 <0.5 <0.5 '2.5 30 07/26/2010 21 4.3 12 43 510 2.7 24 <1 <0.5 <0.5 1.6 43 10/11/2010 22 4.3 11 42 810 2.7 30 <1 <0.5 <0.5 .1.8 80 11/22/2010 19 3.9 11 38 '470 2 26 <2 <2 <2 3 40 04/06/201.1 19.8 4.24 8.29 34.1 310 <2 43 <2 <10. <2 <2 21.7 07/07/2011 22.7 4.66 11.2 41.5 633 2.41 39.1 <1 0.744 <0.5 1.53 65 .11/13/2012 21 4.3 11 36 310. 2 31 <2 <2 <2 2 34 11/25/2013 20 4.1 12 40 300 3 23 <2 <2 <2 2 31 11/11/2014 18 4.0 12 42 300 3 40 <2 <2 <2 2 37 11/10/2015 19 4.6 . 12 43 260 2 30 <2 <2 <2 <2 35 11/01/2016 19 4 10 37 300 <4 30 <4 <4 <4 <4 29 08/15/2017 21 2: 6 43 200 <4 30 <4 <4 <4 <4 48 Fe Hg Mn Mo Ni Pb Se Sb TI V Zn 01/21/2010 540 <0.2 43 14 3 <2 <10 <2 <1 <2 100 04/08/2010 700 <0.2 49 11 <5 1.2 <5 <1 <1 5.3 97 07/26/2010 800 <0.2 37. 13 <5 1.2 <5 <1 <1 3.3 110 .10/11/2010 1000 <0.2 44 16 <5 1.6 <5 <1 <1 3.3 130 11/22/2010 680 0.5 48' 22 3 <2 <10 <2 <1 2 110 04/06/2011 716 <0.2 37.9 8 <2 <2.5 <10 <2 <1' <2 82.7 07/07/2011 1270 <0.2 57 13.6 <5 1.97 <5 <1 <1. 4.04 150 11/13/2012 760 <0.2 50 11 3. <2 <10 <2 <1 .3 120 11/25/2013 600 <0.1 42 12 2 <2 <10 <2 <4 2 110 11/11/2014 630 <0.1 45 17 3 <2 <1.0 <2 <1 3 140' 11/10/2015 670 0.2 25 12 <2 <2 <10 <2 1 <2 110 11/01/2016 800 <0.1 58 12 <4 4 <2'0 <4 <2 <4 170 08/15/2017 500 <0.1 62 1.2 4 <4 <20 <4 <2 <4 180 Annual Metals Report Final Effluent Ca Mg K . Na AI As Ba Be Ag Cd Cr Cu 01/20/2010 .160 01/21/2010 15.6 3.94 10.8 52.8 80 2.15 <2 21.6 <2 <2 <20 04/08/2010 16. 3.8 9.3 44 <20 1.2 8.7 <1 <0.5 <0.5 <1 7.7 07/26/2010 21 4.7 13 64 180 2 8.6 <1 <0.5 <0.5 <1 11 10/11/2010 19 4.2 12 53 <20 1.9 8.2 <1 <0.5 <0.5 <1 14 11/22/2010 17 3.7 11 50 <50 <2 8 <2 <2 <2 <2 9 04/06/2011 16.7 3.78 7.88 40.3 <50 2.64 25 <2 <10 <2 <2 <20 07/07/2011 19 4.38 .11.7' 47.8 <20 1.09 9.97 <1 <0.5 <0.5 <1 6.7 11/09/2011 17 3.7 10 39 <50 <2 12 <2 <2 <2 <2 32 11/13/2012 19 4.1 11 47 <50 <2 11 <2 <2 <2 <2 10 11/25/2013 18 4 12 52 <100 2 5 <2 <2 <2 <2 13 11/1 1/2014 17 3.7 12 51 <50 2 <10 <2 <2 <2 <2 14 11/10/2015 18 4.3 13 53 <50 2 10 <2 <2 <2 <2 8 06/13/2016 18.6 06/14/2016 18.3 11/01/2016 16 3 10 45 <200 <4 <20 <4 <4 <4 <4 8 08/15/2017 19 4.5 13 50 <50 <2 10 <2 <2 <2 <2 10. Fe Hg Mn Mo Ni Pb Se Sb TI V Zn 01/21/2010 90 <0.2 28.2 12 2 <2 <10 <2 <1 <2 18.6 04/08/2010 61 <0.2 33 11 <5 <0.5 <5 <1 <1 4.9 29 07/26/2010 190 <0.2 31 13 <5 <0.5 <5 <1 <1 <3 <20 10/11/2010 94 <0.2 29 11 <5 <0.5 <5 <1 <1 <3 23 11/22/2010 100 <0.2 32 24 <2 <2 <10 <2 <1 <2 30 04/06/2011 59.4 <0.2 23.7 7 <2 <2.5 <10 <2 <1 <2 22.1 07/07/2011 88.9 <0.2 70.2 9.31 <5 <0.5 <5 <1 <1 <3 20.4 11/09/2011 120 <0.2 43 11 <2 <2 <10 <2 2 <2 110 11/13/2012 110 . <0.2 33 10 <2 <2 <10 <2 <1 <2 40 11/25/2013 100 <0.1 29 10 <2 <2 <10 <2 <4 <2 50 11/11/2014 130 <0.1 30 14 <2 <2 <10 <2 <1 <2 30 11/10/2015 140 <0.1 18 10 <2 <2 <10 <2 <1 <2 30 11/01/2016 <200 <0.1 <40 10 <4 <4 <20 <4 <2 <4 50 08/15/2017 170 <0.1 43 11 3 <2 <10 <2 <1 <2 <120 South Tahoe PUD Biosolids Cake Metals Results reported as dry weight Moisture_ As Be- Cd Cr Cu Pb Hg Mo Ni Se Ag Zn Site Date ID# % mg/Kg mg/Kg mg/Kg - mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg Cake .02/04/13 20130205-06 31.0% 3 < 1 < 1 8 126 6 0.52 5 5 < 6 < 1 290 Cake 05/13/13 20130514-07 30.0% 3 < 1 < 1 12 140 6 0.33 6 6 < 7 < 2 400 Cake 08/05/13 AG36844 . 27.0% 3 < 1 < 1 9 219 5 0.26 11 5 < 7 < 1 481 Cake 11/25/13 AG38599 31.0% -3 < 1 < 1 8 119 29 0.31 5 5 < 6 < 1 355 Cake 02/03/14 AG39474 29.0% -2 < 1 < 1 6 114 4 0.55 7 4 < 7 < 1 317 Cake 05/12/14 AG40792 27.0% 2 <. 1 < 1 7 122 4 0.41 5 5 < 7 < 1 315 Cake 08/13/14 AG42401 28.0% 3 < 1 1 7 .1.54: 8 0:29 9 4: < 7 1 429 Cake 11/11/14 AG43808 28.0% 3 < 1 1 7 125 4 0.29 7 5 < 7 < 1 346 Cake 02/23/15 AG45177 46.0% 2 < 1 < 1 5 117 3 0.33 6 4 < 5 < 1 326 Cake 05/19/15 AG46276 36.0% 4 -- < 1 < 1 7 156 5 0.5.6 7 4- < 6 < 1 431 Cake- 08/03/15 AG47322 45.0% 2 < 1 < 1 4 127 4 0.24 6 3 < 7 < 1 400 Cake 11/10/15 AG48725 28.0% 3 <. 1 < 1 3 114 4 0.29 6 4 < 5 < 1 329 Cake 02/02/16 AG49699 28.0% 4 < 1 < 1 7 129 4 0.21 6 5- < 5 1 318 Cake 05/03/16 AG50811 33.0% 3 < 1 < 1 7 88 4 0.18 5 4 < 6 < 1 276 Cake 08/08/16 AG52307 28.0% 3 < 1 < 1 6 125 4 0.18 6 4 < 5 < 1 464 Cake 11/01/16 AG53555 26.0% 4 < 1 < 1 8 123 4 < 0.03 8 4 < 6 < 1 385 Cake 02/13/17 AG54852 25.0% 3 < 1 < 1 8 112 7 0.16 5 6 < 5 6 280 Cake 05/22/17 �AG56207 15.0% 3 < 1 < 1 6 107 6 0.33 6 5 < 5 < 1 293 Cake 08/15/17 AG57585 26.0% 3 < 1 <- 1 6 138 3 0.23 7 5 <. 5 < 1 538 Cake 11/14/17 AG58968 28.0% 4.6 < 0.45 0.54 6.4 293 4.6 0.36 10 4.6 1.8 1.6 1000 Maximum 46.0% 5 4 4 19 307 29 2.50 19 19 9- 19 1000 Minimum 15.0% 2 0 1 1 88 3 0.03 3 3 2 1 276 Average 27.9% 3 1 1 7 177 8 0.53 8 5 6 3 40.9 #Tests 56- 56 56 56 56 56 56 56 56 56 56 56 56 Percent As Be Cd Cr Cu Pb Hg Mo Ni Se Ag Zn >0 >0 >0 >0 >0 >0 >0 >0 >0 >0 >0 >0 >0 South Tahoe PUD Biosolids Cake Metals 1 Results reported as wet weight Solids As Be Cd Cr Cu Pb Hg Mo Ni Se Ag Zn Site Date ID# % mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg' mg/Kg Cake 02/04/13 20130205-06 31.0% 0.8 < 0.3 < 0.3 2.4 -39 1.9 0.16 1.6 1.7 < 2.0 < 0.3 90 Cake 05/13/13 20130514-07 30.06/6 1.0 < 0.3 < 0.3 3.7 42 1.8 0.10 1.8 1.7 <. 2.0 < 0.7 120 Cake 08/05/13 AG36844 27.0% 0.9 < 0.3 < 0.3 2.3 59 1.4 0.07 2.9 1.3 < 2.0 < 0.3 130 Cake 11/25/13 AG3859.9 31.0% 0.8 < 0.3 < 0.3 2.4 37 8.9 0.10 1.5 1.5 < 2.0 < 0.3 110 Cake 02/03/14 AG39474 29.0% 0.7 < 0.3- < 0.3 1.8 33 1.1 0.1-6 1.9 1.3 < 2.0 < 0.3 92 Cake 05/12/14 AG40792 27.0% 0.6 < 0.3 < 0.3 1.8 33 1.0 0.11 1.3 1.4 < 2.0 < 0.3 85 Cake 08/1.3/14 AG42401 1 28.0% 0.9 -< .0.3 0.3 1.9 43 2.1 0.08 2.5 1.2 < 2:0 0.4 120 Cake 11111/14 AG43808- 28.0% 0.9 < 0.3 0.4 -1-9 35 1.2 0.08 2.0 1.3 < 2.0 < 0.3 97 Cake 02/23/15 AG45177 46.0% 1.0 < 0.5 < 0.5 2.5 54 1.5 0.15 . 2.6 1.7 < 2.5 < 0.5 150 Cake 05/19/15 AG46276 36.0% 1.4 < 0.4 < 0.4 2.4 56 1.9 0.20 2.4 1.6 < 2.0 < 0.4 155 Cake 08/03/15 AG47322 45.0% 1.1 < 0.5 < 0.5 1.7 57 1.7 0.11 2.6 1.4- < 3.0 < 0.5 180 Cake 11/10/15 , AG48725 .-28.0% 0.9 < 0.3 < 0.3 0.9 32 1.0 -'0.08 1.6 1.0 < 1.5 < 0.3 92 Cake 02/02/16 AG49699 28.0% 1.0 < -0.3 < 0.3 2.0 36 1.0 0.06: 1.8 1.3 < 1.5 0.3 89 Cake 05/03/16 AG50811 33.0% 1.0 < 0.3 < 0.3 2.3 29 1.3 0.06 1.6 1.3 < 2.0 < 0.3 91 Cake 08/08/16 AG52307 28.0% 0.9 < 0.3 < 0.3' 1.6 35 1.1 0.05 1.8 1.0 < 1.4 < 0.3 130 Cake 11/01/16 AG53555 26.0%. 1.0 < 0.3 < 0.3 2.0 32 1.0 < 0.008 2.0 1.0 < 1:5 < 0.3 100 Cake 02/13/17 AG54852 25.0% 0.8 < 0.2 < 0.2 1.9 28 1.8 0.04 1.3 1.5 < 1.2 1.4 70 Cake 05/22/17 AG56207 15.0% 0.4 < 0.2 < 0.2 0.9 16 0.9 0.05 0.9 0.7 < 0.8 < 0.2 44 Cake 08/15/17 AG57585 26.0% 0.8. < 0.3 < 0.3 1.6 36 0.9 0.06 1.7 1.4 < 1.3 < 0.3 140 Cake 11/14/17 AG58968 28.0% 1.3 < 0.13 0.15 1.8 82 1.3 0.10 2.8 1.3 0.51 0.45 280 Maximum 46.0% 1.4 1.0 1.0 5.0 82 8.9 0.50 . 5.6 5.0 3.0 3.9 280 Minimum 15.0% 0.4 0.1 0.2 0.2 16 0.9 0.01 0.6 0.7 0.5 0.2 44 Average 27.9% .0.9 0.3 0.3 2.0 48 2.1 0.14 2.2 1.5 1.7 0.7 113 #Tests 56 56 56 56 56 56 56 56 56 56 56 56 56 SOUTH TAHOE PUBLIC UTILITY DISTRICT WASTEWATER TREATMENT PLANT COMPLIANCE RECORD Chemical Tests Violations Compliance Year # # % Comments 1980 2,196 40 98.2 1981 1,946 27 98.6 1982 1,951 ' 72 96.3 1983 1,983 17 99.1 1984 2,480 61 97.5 1985 2,811 9 99.7 1986 3,146 69 97.8 . 1987 3,018 42 98.6 1988 3,323 9 " 99.7 1989 2,432 14 99.4 1990 2,098 0 100.0 1991 2;068 1 99.95 pH 1992 27168 0 100.0 1,993 2,163 2 99.91 COD, Set Solids 1994 27152 0 100.0 1995 2,047 1 99.95 Settleable Solids 5/6/95 0.3 1996 2,064 0 100.0 1997 27138 0 100.0 . 1998 2,149 0 100.0 1999 2,201 0 100.0 2000 27110 0 100.0 2001 2,153 0 100.0 2002 2,137 0 100.0 2003 27159 0 100.0 I 2004 2,078 0 100.0 2005 2,069 0 100.0 2006 27191 0 100.0 2007 2,172. .0 100.0 2008 27159 0 100.0 . 2009 2,160 0 100.0 2010 2,1.61 0 100.0 2011 27093 0 100.0 Stopped COD tests 06/2011 2012 2,063 0 100.0 2013 27050 0 100.0 . 2014 27054 0 100.0 2015 27052 0 100.0 2016 2,042 0 100.0 Total Coliform by Quanti-Tray 2017 Results do not include flow measurements #Violations 0 20 40 60 80 100 Q '.:;Y\;`y`2`,...ti':;"'%,-W Y'i�p,.:.\�t`t +c ,.ia`3�'1`a'�x:x ><�'•.�:2`La F,:-\b�;,,\'.'.\, .+� % x•Ytt�, :�... •Y+?.3'l. ,h`a"'t•�-. .,,�,<,M. „qt'c\.t ..,a.�-. .,�.,..y,. "aYoa ,�A.wxs.<t A:`. :.'.':� =:`a�.e :.:L�:�: <,��'.' -�.,ci,G�"�`s:x�a��;�''.�z ro:Sa'<i. `<�•. '?tii `..1,.. `:�u"�"1�;��:xa�?•e..�"�";`.��5��. �'�n:•.",�a'^°.,,.+"ac•.::i`ww.:�'mM;.r.Y�. '"`;';�;d="=rya"!dx;:.'��;i'�. �'..a�\,..,,�.,�":a':,�,•• x;l�';" ^`3: ',..r"i;�,<:�3:,_ "�'�u . • ".,.;t:� �x`,K�r, �•::; '..�"�.:::z: �M, �`:y�a. ,`hti.::.;c'.y�.,x' r;`v,ryn�",ia:;\ x,,,ri:x „`a•Z�?:aY�v!..,,,�.: .•sS3 ro:? ' <:..`�'.;x��•'� •.,,..` a., �...,€, ';Y.Pa.•,.w. :'a ��v �.yhzz,3^::��," 986 't:. 6 ��; '•ice""�e�;.7'=ar':�'�.. ?;^'�a^���&E�;, 18 � �^,�<,.'a.�r�k�;��'ic,�'`�,'a`�``A�`�:i�;�;� �`��'.�E\•.�;�a�"$,s��''�.��,,�.i5,s.a�.wv 696 L 0666 L66L Z666 0 £66 >>$° N t,66 6 966L 966L 1666 966 L O 666L rMIL OOOZ LOOZ o ZOOZ y £OOZ ti00Z 500Z 900Z LOOZ 800Z 60OZ 0LOZ L WZ ZLOZ £LOZ VLOZ 9LOZ 9LOZ L WZ PRETREATMENT PROGRAM UPDATE PRETREATMENT ANNUAL REPORT COVER SHEET NPDES Permit Holder of Sewer Authority Name: South Tahoe Public Utility District Report Date: February 21, 2018 Period Covered by this Report: January 1, 2017 to December 31,,2017 Name of Wastewater Treatment Plant NPDES Permit Number, South Tahoe Public Utility District Board Order No: R61-2004-0010 WDIS No. 6AO95900700 Person to contact concerning information contained in this report: Name: Jeff Lee Title: Plant Operations Manager Mailing Address 1275 Meadow Crest Drive South Lake Tahoe, CA 96150 Telephone No: (530) 544-6474 1 have personally examined and am familiar with the information submitted in this document and attachments. Based upon my inquiry of those individuals immediately responsible for obtaining the information reported herein, I believe that the submitted information is true, accurate, and complete. 2 ,2,5, Date t� nature of Official Plant Operations Manager Title ANNUAL PRETREATMENT REPORT 2017 Section 1 —Results of Wastewater Treatment Plant Sampling and Analysis The wastewater treatment pant influent, effluent and sludge were sampled August 15, 2017 for pollutants EPA has identified under Section 307(a) of the Clean Water Acton. The results are attached. Section 2—Upset,Interference, and Pass-Through Incidents No upset, interference, or pass-through events occurred during the period. Section 3 —Baseline Monitoring Reports There were no industrial/commercial users notified regarding baseline monitoring requirements this period. Section 4—Updated List of Dischargers The list of industrial/commercial dischargers has been updated and are.shown instable.4-A. This table indicates businesses added or deleted, and corresponding comments. One (1) establishment was deleted because they were found to be no longer in business. Field verification and plan reviews have identified two (2)new businesses, which are included on the table. Section 5—Annual Industrial User Site Inspection Summary There were approximately 501 on-site inspections conducted during 2017. These inspections were primarily conducted at discharger, which have grease traps/interceptors and or sand/oil traps. However, this figure is considered conservative because many plan applications and reviews along with other functions assigned to District staff are done routinely. Section 6—Compliance and Enforcement Summary Inspections during the period covered in this pretreatment update resulted in the issuance 19 correction notices. Primarily, correction notices were issued for violations regarding grease trap/interceptor routine cleaning or other necessary repair work. Each correction notice issued was followed up by a re-inspection to ensure that the violation was .corrected. All violations resulted in appropriate corrective action to remedy the violation. Section 7—Pretreatment Program Changes No changes to the program occurred during this report period. Section 8—Annual Pretreatment Budget Summary The cost of operating the pretreatment program for the period covered in this report was approximately $15,000.00. The funding comes from.the general operating fund. Due to the fact that there are no categorical or significant non-categorical industrial users, funds cannot be generated from user fees. Figures are based on Lab costs and two District Inspectors conducting on-site inspections of known users. No new equipment was purchased for the pretreatment program. Section 9 —Sludge Disposal Changes No changes to the sludge disposal methods occurred.this period. INDUSTRIAL USER LIST UPDATE 2017 Table 4-A GREASE TRAP/INTERCEPTOR&SAND/OIL INTERCEPTORS NEW NAME :>AD.DRESS,::' COMMENTS The Pour House 2042 Lake Tahoe Blvd. South Lake Brewing 1920 Lake Tahoe Blvd. NAME CHANGED .... _ NA .. Free Bird 2229 Lake Tahoe Blvd. Ke 's Ice Cream Rainbow Sprinkles 1036 Emerald Bay Road . Tahoe Donuts The lake House 1181 Emerald Bay Road Passaretti's Poke Roc 4125 Lake Tahoe Blvd. Sno-Frozen Yogurt CLOSED `APDRE S'.. ,•. .:r:: 'COMM Mo's Place 4101 Lake Tahoe Blvd. Building Demolished ROUTE INFO How many tra s/interce tors,on our route? 253 How many total inspections were done? 501 How many correction notices were written? 19 SOUTH TAHOE PUBLIC UTILITY DISTRICT MEMORANDUM From The Lab Date: January 1, 2018 To: Jeff Lee, Manager of Wastewater Operations Cuz Cullen, Inspection Supervisor From: Terry Powers, Laboratory Director Topic: EPA Priority Pollutants Samples were obtained from the Raw Influent, Final Effluent and Centrifuge Cake on August 15, 2017 for metals and organic chemicals. Raw Influent and Final Effluent were 24-hour composites, except the Raw and Final VOC's. The Raw and Final VOC's were grab samples obtained during high flow conditions. The Centrifuge Cake sample was an 8- hour composite sample The samples were analyzed for the Environmental Protection Agency's Priority Pollutant list to determine plant upset or pass-though. 1. Metals The Raw Influent and Final Effluent had all total metal results below the drinking water Primary Maximum Contaminant Levels(MCL)and the Soluble Threshold Limit Concentrations (STLC). The Centrifuge Cake(whole sample)had all metals below the Total Threshold Limit Concentrations(TTLC). Copper and Selenium were above the STLC but below 10 x STLC. The State allows results from the total metals tests to be compared with (10 x STLC) to determine whether there is risk of the. leachate from the solid material being hazardous. If the total metals results are < (10 x STLC), the leachate is considered safe. If the total metals results are > (10 x STLC), a WET extraction of the solid material is performed and compared against the STLC. March 1, 2018 Page 2 Metal Concentrations Sample date: August 15, 2017 Drinking Raw Final Water Compound Units Influent PQL Effluent PQL MCL Aluminum pg/L 200 100 ND 50 17000 Antimony pg/L ND 4 ND 2 6 Arsenic pg/L ND 4 2 2 10 Barium pg/L 30 20 10 10 11000 Beryllium pg/L ND 4 ND 2 4 Cadmium pg/L ND 4 ND 2 5 Calcium mg/L 21 1 19 0.5 Chromium mg/L ND 4 ND 2 50 Cobalt pg/L ND 4 ND 2 Copper pg/L 48 4 10 2 11000 Iron pg/L 500 100 170 50 300 Lead pg/L N D 4 N D 2 15 Magnesium mg/L 2 1 4.5 0.5 Manganese pg/L 62 4 43 2 50 Mercury pg/L ND 0.1 ND 0.1 2 Molybdenum pg/L 12 4 11 2 Nickel pg/L 4 4 3 2 100 Potassium mg/L 6 1 13. 0.5 Selenium pg/L ND 20 ND 10 50 Silver pg/L ND 4 ND 2 100 Sodium mg/L 43 1 50 0.5 Thallium pg/L ND 2 ND 1 2 Vanadium pg/L ND 4 ND 2 Zinc pg/L 180 120 ND 20 51000 Notes:The sample for metals is a 24-hour flow-proportioned composite. DALahontan\Priority Pollutants\Organics 2017.doc March 1, 2018 Page 3 Centrifuge Cake Metals Sample Date: August 15, 2017 Centrifuge Cake Date: 8/15/2017 ID: AG57585 Wet Weight STLC Result 10xSTLC TTLC mg/Kg mg/Kg mg/Kg mg/Kg > STLC 10xSTLC > TTLC Antimony 15 < 0.3 150 500 no no no Arsenic 5 0.8 50 500 no no no 10,00 Barium 100 24 1,000 0 no no no Beryllium 0.75 < 0.3 7.5 75 no no no Cadmium 1 < 0.3 10 100 no no no Chromium 5 1.6 50 2,500 no no no Cobalt 80 < 0.3 800 8,000 no no no Copper 25 36 250 2,500 YES no no Lead 5 0.9 50 1,000 no no no Mercury 0.2 0.06 2 20 no no no Molybdenum 350 1.7 3,500 3,500 no no no Nickel 20 1.4 200 2,000 no no no Selenium 1 < 1.3 10 100 YES no no Silver 5 < 0.3 50 500 no no no Thallium 7 < 0.13 70 700 no no no Vanadium 24 1.9 240 2,400 no no no Zinc 250 140 2,500 5,000 no no no DALahontan\Priority Pollutants\Organics 2017.doc March 1, 2018 Page 4 2. Organic Analyses Volatile,Organic Chemicals(VOCs), Semi volatile Organic Compounds, Chlorinated Pesticides and Chlorinated Herbicides were tested in the Raw Influent, Final Effluent and Centrifuge Cake. The detected compounds are tabulated below. Organic Compounds Test Results Detections August 15, 2017 Raw Final Centrifuge Influent Effluent Cake Compound pg/L pg/L pg/Kg Acetone 70 74,700 Benzoic Acid 100 bis(2-Ethylhexyl)phthalate 2.9 2-Butanone (MEK) 53,800 Chloroform 0.565 3 and 4-Methylphenol 20 14.2 Phenol 10 Styrene 6 Toluene 1.9 1.455 DALahontan\Priority Pollutants\Organics 2017.doc Silver State Labs-Reno September 07, 2017 SilverState 1135 Financial Blvd Workorder 17080894 ,�. Reno,NV 89502 Analyticai�Laboratories �Sierra Environmental Monitoring (775)857-2400 FAX:(888)398-7002 www.ssalabs.com Terry Powers SOUTH TAHOE PUBLIC UTILITY DISTRICT 1275 Meadow Crest Drive South Lake Tahoe,CA 96150 Project: Priority Pollutants Dear Terry Powers: It is the policy of Silver State Analytical Laboratory-Reno to strictly adhere to a comprehensive Quality Assurance Plan that ensures the data presented in this report are both accurate and precise.Silver State Analytical Laboratory-Reno maintains accreditation in the State of Nevada(NV-00015)and the State of California(ELAP 2990). The data presented in this report was obtained from the analysis of samples received under a chain of custody.Unless otherwise noted below,samples were received in good condition,properly preserved and within the hold time for the requested analyses.Any anomalies associated with the analysis of the samples have been flagged with an appropriate explanation in the Analysis Report section of the Laboratory Report. Sincerely, Carly Wood Laboratory Director 1135 Financial Blvd Reno,NV 89502 Revision v 1 Page 1 of 14 Silver State Labs-Reno Analytical Report silverStat 1135 Financial Blvd . AnalytlCgl. LpbOl'C!'1QCIeS Reno,NV 89502 • (775)857-2400 FAX:(888)398-7002 Workorder#: 17080894 Sierra Environmental www.ssalabs.com Date Reported: 9/7/2017 Client: SOUTH TAHOE PUBLIC UTILITY DISTRICT Sampled By: Auto Sampler/ Project Name: Priority Pollutants PO#: Laboratory Accreditation Number: NV015/CA2990 Laboratory ID Client Sample ID Date/Time Sampled Date Received 17080894-01 Centrifuge Cake-Dry 08/15/2017 12:00 8/17/2017 Date/Time Data Parameter Method Result Units PQL Analyst Analyzed Flag Aluminum EPA 6010 1400 mg/Kg 50 RM 08/30/2017 12:23 Antimony EPA 6020 <1 mg/Kg 1 RM 08/30/2017 12:32 Arsenic EPA 6020 3 mg/Kg 1 RM 08/30/2017 12:32 Barium EPA 6020 93 mg/Kg 5 RM 08/30/2017 12:32 Beryllium EPA 6020 <1 mg/Kg 1 RM 08/30/2017 12:32 Cadmium EPA 6020 <1 mg/Kg 1 RM 08/30/2017 12:32 Calcium EPA 6010 12000 mg/Kg 500 RM 08/30/2017 12:23 Chromium EPA 6020 6 mg/Kg 1 RM 08/30/2017 12:32 Cobalt EPA 6020 <1 mg/Kg 1 RM 08/30/2017 12:32 Copper EPA 6020 140 mg/Kg 1 RM 08/30/2017 12:32 Iron EPA 6010 3200 mg/Kg 50 RM 08/30/2017 12:23 Lead EPA 6020 3 mg/Kg 1 RM 08/30/2017 12:32 Magnesium EPA 6010 1500 mg/Kg 500 RM 08/30/2017 12:23 Manganese EPA 6020 72 mg/Kg 1 RM 08/30/2017 12:32 Mercury SW-846 7471 B 0.25 mg/Kg 0.12 SK 08/30/2017 15:25 Molybdenum EPA 6020 7 mg/Kg 1 RM 08/30/2017 12:32 Nickel EPA 6020 5 mg/Kg 1 RM 08/30/2017 12:32 Potassium EPA 6010 1100 mg/Kg 500 RM 08/30/2017 12:23 Selenium EPA 6020 <5 mg/Kg 5 RM 08/30/2017 12:32 Silver EPA 6020 <1 mg/Kg 1 RM 08/30/2017 12:32 Sodium _EPA 6010 <500 mg/Kg 500 RM 08/30/2017 12:23 Thallium EPA 6020 <0.5 mg/Kg 0.5 RM 08/30/2017 12:32 Vanadium EPA 6020 7 mg/Kg 1 RM 08/30/2017 12:32 Zinc EPA 6020 530 mg/Kg 10 RM 08/30/2017 12:32 Revision v 1 Page 2 of 14 Silver State Labs-Reno Analytical Report sil verState 1135 Financial Blvd j` Analyflcat-Laborator1@S Reno,NV 89502 (775)857-2400 FAX:(888)398-7002 Workorder#: 17080894 Sierra Environmental Monitoring Date Reported: 9/7/2017 www.ssalabs.com P Client: SOUTH TAHOE PUBLIC UTILITY DISTRICT Sampled By: Project Name: Priority Pollutants PO#: Laboratory Accreditation Number: NV015/CA2990 Laboratory ID Client Sample ID Date/Time Sampled Date Received 17080894-02 Centrifuge Cake-Wet 08/15/2017 12:00 8/17/2017 Date/Time Data Parameter Method Result Units PQL Analyst Analyzed Flag Aluminum EPA 6010 360 mg/Kg 13 RM 08/30/2017 15:26 Antimony EPA 6020 <0.3 mg/Kg 0.3 RM 08/30/2017 16:36 Arsenic EPA 6020 0.8 mg/Kg 0.3 RM 08/30/2017 16:36 Barium EPA 6020 24 mg/Kg 1.3 RM 08/30/2017 16:36 Beryllium EPA 6020 <0.3 mg/Kg 0.3 RM 08/30/2017 16:36 Cadmium EPA 6020 <0.3 mg/Kg 0.3 RM 08/30/2017 16:36 Calcium EPA 6010 3100 mg/Kg 130 RM 08/30/2017 15:26 Chromium EPA 6020 1.6 mg/Kg 0.3 RM 08/30/2017 16:36 Cobalt EPA 6020 <0.3 mg/Kg 0.3 RM 08/30/2017 16:36 Copper EPA 6020 36 mg/Kg 0.3 RM 08/30/2017 16:36 Iron EPA 6010 840 mg/Kg 13 RM 08/30/2017 15:26 Lead EPA 6020 0.9 mg/Kg 0.3 RM 08/30/2017 16:36 Magnesium EPA 6010 400 mg/Kg 130 RM 08/30/2017 15:26 Manganese EPA 6020 19 mg/Kg 0.3 RM 08/30/2017 16:36 Mercury SW-846 7471 B 0.06 mg/Kg 0.03 SK 08/30/2017 15:25 Molybdenum EPA 6020 1.7 mg/Kg 0.3 RM 08/30/2017 16:36 Nickel EPA 6020 1.4 mg/Kg 0.3 RM 08/30/2017 16:36 Percent Moisture SM 2540 G 74 % 0.1 SK 08/24/2017 15:00 Potassium EPA 6010 290 mg/Kg 130 RM 08/30/2017 15:26 Selenium EPA 6020 <1.3 mg/Kg 1.3 RM 08/30/2017 16:36 Silver EPA 6020 <0.3 mg/Kg 0.3 RM 08/30/2017 16:36 Sodium EPA 6010 <130 mg/Kg 130 RM 08/30/2017 15:26 Thallium EPA 6020 <0.13 mg/Kg 0.13 RM 08/30/2017 16:36 Vanadium EPA 6020 1.9 mg/Kg 0.3 RM 08/30/2017 16:36 Zinc EPA 6020 140 mg/Kg 2.6 RM 08/30/2017 16:36 Revision v 1 Page 3 of 14 Silver State Labs-Reno Analytical Report 1135 Financial Blvd SilverSta_ e Reno,NV 89502 A11gIytiCC11_ i:Ctb01'Ctt0f1eS (775)857-2400 FAX:(888)398-7002 Workorder#: 17080894 SSierra Environmental Monitoring Date Reported: 9/7/2017 www.ssalabs.com p Client: SOUTH TAHOE PUBLIC UTILITY DISTRICT Sampled By: Auto Sampler/ Project Name: Priority Pollutants PO#: Laboratory Accreditation Number: NV015/CA2990 Laboratory ID Client Sample ID Date/Time Sampled Date Received 17080894-03 Raw Influent 08/15/2017 5:00 8/17/2017 Date/Time Data Parameter Method Result Units PQL Analyst Analyzed Flag Aluminum EPA 200.7 0.2 mg/L 0.1 RM 08/24/2017 12:14 Antimony EPA 200.8 <0.004 mg/L 0.004 RM 08/22/2017 18:08 Arsenic EPA 200.8 <0.004 mg/L 0.004 RM 08/22/2017 18:08 Barium EPA 200.8 0.03 mg/L 0.02 RM 08/22/2017 18:08 Beryllium EPA 200.8 <0.004 mg/L 0.004 RM 08/22/2017 18:08 Cadmium EPA 200.8 <0.004 mg/L 0.004 RM 08/22/2017 18:08 Calcium EPA 200.7 21 mg/L 1 RM 08/24/2017 12:14 Chromium EPA 200.8 <0.004 mg/L 0.004 RM 08/22/2017 18:08 Cobalt EPA 200.8 <0.004 mg/L 0.004 RM 08/22/2017 18:08 Copper EPA 200.8 0.048 mg/L 0.004 RM 08/22/2017 18:08 Iron EPA 200.7 0.5 mg/L 0.1 RM 08/24/2017 12:14 Lead EPA 200.8 <0.004 mg/L 0.004 RM 08/22/2017 18:08 Magnesium EPA 200.7 2 mg/L 1 RM 08/24/2017 12:14 Manganese EPA 200.8 0.062 mg/L 0.004 RM 08/22/2017 18:08 Mercury EPA 245.1 <0.0001 mg/L 0.0001 SK 08/25/2017 12:38 Molybdenum EPA 200.8 0.012 mg/L 0:004 RM 08/22/2017 18:08 Nickel EPA 200.8 0.004 mg/L 0.004 RM 08/22/2017 18:08 Potassium EPA 200.7 6 mg/L 1 RM 08/24/2017 12:14 Selenium EPA 200.8 <0.02 mg/L 0.02 RM 08/22/2017 18:08 Silver EPA 200.8 <0.004 mg/L 0.004 RM 08/22/2017 18:08 Sodium EPA 200.7 43 mg/L 1 RM 08/24/2017 12:14 Thallium EPA 200.8 <0.002 mg/L 0.002 RM 08/22/2017 18:08 Vanadium EPA 200.8 <0.004 mg/L 0.004 RM 08/22/2017 18:08 Zinc EPA 200.8 0.18 mg/L 0.12 RM 08/22/2017 18:08 B Revision v 1 Page.4 of 14 Silver State Labs-Reno Analytical Report Sil verState 1135 Financial Blvd Reno,NV 89502 Analytical-'Laboratories (775)857-2400 FAX:(888)398-7002 Workorder#: 17080894 Sierra Environmental Monitoring Date Reported: 9/7/2017 • www.ssalabs.com p Client: SOUTH TAHOE PUBLIC UTILITY DISTRICT Sampled By: Project Name: Priority Pollutants PO#: Laboratory Accreditation Number: NV015/CA2990 Laboratory ID Client Sample ID Date/Time Sampled Date Received 17080894-04 Final Effluent 08/15/2017 7:33 8/17/2017 Date/Time Data Parameter Method Result Units PQL Analyst Analyzed Flag Aluminum EPA 200.7 <0.05 mg/L 0.05 RM 08/24/2017 12:35 Antimony EPA 200.8 <0.002 mg/L 0.002 RM 08/22/2017 18:22 Arsenic EPA 200.8 0.002 mg/L 0.002 RM 08/22/2017 18:22 Barium EPA 200.8 0.01 mg/L 0.01 RM 08/22/2017 18:22 Beryllium EPA 200.8 <0.002 mg/L 0.002 RM 08/22/2017 18:22 Cadmium EPA 200.8 <0.002 mg/L 0:002 RM 08/22/2017 18:22 Calcium EPA 200.7 19 mg/L 0.5 RM 08/24/2017 12:35 Chromium EPA 200.8 <0.002 mg/L 0.002 RM 08/22/2017 18:22 Cobalt EPA 200.8 <0.002 mg/L 0.002 RM 08/22/2017 18:22 Copper EPA 200.8 0.010 mg/L 0.002 RM 08/22/2017 18:22 Iron EPA 200.7 0.17 mg/L 0.05 RM 08/24/2017 12:35 Lead EPA 200.8 <0.002 mg/L 0.002 RM 08/22/2017 18:22 Magnesium EPA 200.7 4.5 mg/L 0.5 RM 08/24/2017 12:35 Manganese EPA 200.8 0.043 mg/L 0.002 RM 08/22/2017 18:22 Mercury EPA 245.1 <0.0001 mg/L 0.0001 SK 08/25/2017 12:38 Molybdenum EPA 200.8 0.011 mg/L 0.002 RM 08/22/2017 18:22 Nickel EPA 200.8 0.003 mg/L 0.002 RM 08/22/2017 18:22 Potassium EPA 200.7 13 mg/L 0.5 RM 08/24/2017 12:35 Selenium EPA 200.8 <0.01 mg/L 0.01 RM 08/22/2017 18:22 Silver EPA 200.8 <0.002 mg/L 0.002 RM 08/22/2017 18:22 Sodium EPA 200.7 50 mg/L 0.5 RM 08/24/2017 12:35 Thallium EPA 200.8 <0.001 mg/L 0.001 RM 08/22/2017 18:22 Vanadium EPA 200.8 <0.002 mg/L 0.002 RM 08/22/2017 18:22 Zinc EPA 200.8 <0.12 mg/L 0.02 RM 08/22/2017 18:22 B Revision v 1 Page 5 of 14 n Silver State Labs-Reno Quality Control Report S-ilverSitate 1135 Financial Blvd AnalytiC'al Laboratories Reno,NV 89502 WO#: 17080894 i Sierra Enviro.nmental Monitoring (775)$57-2400 FAX:(888)398-7002 9/7/2017 www.ssalabs.com Analysis: Mercury,RCRA Solid Method: SW-846 7471 B Batch ID: R10095 Method Blank RunID: 10095 SegNo 193176 Units: mg/L Analysis Date: 8/30/2017 3:25:00 PM Analyst: SK Analyte Result Rep Limit I Rep Qual Mercury <0.000101 0.00010 Laboratory Control Sample(LCS) RunID: 10095 SegNo 193177 Units: mg/L Analysis Date: 8/30/2017 3:25:00 PM Analyst: SK Analyte LCS LCS Result LCS% LCSD LCSD LCSD% RPD RPD Low High Qual Spike Recovery Spike Result Recovery Limit Limit Limit Added Added Mercury 10.0060001 0.006281 105 Matrix Spike(MS)/Matrix Spike Duplicate(MSD) Sample Spiked: 17080894-01A RunID: 10095 SegNo 193179 Units: mg/Kg Analysis Date: 8/30/2017 3:25:00 PM Analyst: SK Analyte Sample MS MS MS% MSD MSD MSD% RPD RPD Low High Qual Result Spike Result Recovery Spike Result Recovery Limit Limit Limit Added Added Mercury 0.2500 1.090 1.41 106 1.180 1.46 103 3.48 20 80 120 Analysis: Metals 6010-Solid Method: EPA 6010 Batch ID: R10096 Method Blank RunID: 10096 SegNo 193229 Units: mg/Kg Analysis Date: 8/30/2017 12:14:29 PM Analyst: RM Analyte Result Rep Limit Rep Qual Aluminum <0.50 0.50 Calcium <5.0 5.0 Iron <0.50 0.50 Magnesium <5.0 5.0 Potassium <5.0 5.0 Sodium <5.01 5.0 Laboratory Control Sample(LCS) RunID: 10096 SegNo 193201 Units: mg/L Analysis Date: 8/30/2017 10:58:49 AM Analyst: RM Analyte LCS LCS Result LCS% LCSD LCSD LCSD% RPD RPD Low High 'Qual Spike Recovery Spike Result Recovery Limit Limit Limit Added Added Aluminum 6.000 5.8. 97.2 Calcium 30.00 301 98.9 Revision vl Page 6 of 14 Silver State Labs-Reno Quality Control Report ilverS State 1135 Financial Blvd Analytical LaborQ 4rl.@S Reno,NV 89502 WO#: 17080894 Sierra Environmental Monitoring (775)857-2400 FAX:(888)398-7002 9/7/2017 www.ssalabs.com Iron 6.000 5.9 98.5 Magnesium 30.00 29 97.0 Potassium 30.00 30 101 Sodium 1 30.001 301 99.51. Matrix Spike(MS)/Matrix Spike Duplicate(MSD) Sample Spiked: 17080894-01A RunID: 10096 SegNo 193235 Units: mg/Kg Analysis Date: 8/30/2017 12:27:16 PM Analyst: RM Analyte Sample MS MS MS% MSD MSD MSD% RPD RPD Low High Qual Result Spike Result Recovery Spike Result Recovery Limit Limit Limit Added Added Aluminum 1361 500.01 1900 108 500.0 1900 11.4 1.55 201 70 130 Calcium 11840 2000 14000 88.6 2000 14000 96.3 1.13 20 70' 130 Iron 3210 500.0 3600 80.5 500.0 3700 94.4 1.91 20 70 130 Magnesium 1527 2000 35001 99.5 2000 3600 104 2.64 20 701 130 Potassium 1113 2000 3100 97.5 2000. 3200 102 3.22 20 70 130 Sodium 335.1 2000 2400 102 2000 2400 105 3.06 20 70 130 Analysis: Metals 6020 Solid Method: EPA 6020 Batch ID: R10104 Method Blank RunID: 10104 SegNo 193516 Units: mg/Kg Analysis Date: '8/30/2017 12:14:02 PM Analyst: RM Analyte Result Rep Limit Rep Qual Antimony <0.010 0.010 Arsenic <0:010 0.010 Barium <0.050 0.050. Beryllium <0.010 0.010 Cadmium <0.010 0.010 Chromium <0.010 0.010 Cobalt <0.010 0.010 Copper <0.010 0.010 Lead <0.010 0.010 Manganese <0.010 0.010 Molybdenum <0.010 0.010 Nickel <0.010 0.010 Selenium <0.050 0.050 Silver <0.010 0.010 Thallium <0.0050 0.0050 Vanadium <0.010 0.010 Zinc 70.10 0.10 Laboratory Control Sample(LCS) RunID: 10104 SegNo 193507 Units: mg/L Analysis Date: 8/30/2017 11:32:40 AM Analyst: RM Revision v 1 Page 7 of 14 SiStat.. Silver State Labs-Reno Quality Control Report lver 1135 Financial Blvd Analytical lc�borcltari sReno, 89502WO#: 17080894 Sierra Environmental Monitoring (775)857-2400 FAX:(888)398-7002 9/7/2017 www.ssalabs.com Analyte LCS LCS Result, LCS% LCSD LCSD LCSD% RPD RPD Low High Qual Spike Recovery Spike Result Recovery Limit Limit Limit Added Added Antimony 0.1000 0.099 99.0 Arsenic 0.1000 0.098 97.9 Barium 0.1000 0.097 96.6 Beryllium 0.1000 0.099 98.8 Cadmium 0.1000 0.099 99.1 Chromium 0.1000 0.099 99.0 Cobalt 0.1000 0.10 99.8 Copper 0.1000 0.099 99.4 Lead 0.1000 0.098 97.6 Manganese 0.1000 0.10 99.8 Molybdenum 0.1000 0.098 98.0 Nickel 0.1000 0.098 98.3 Selenium 0.5000 0.50 99.4 Silver 0.1000 0.099 98.9 Thallium 0.1000 0.10 99.9 Vanadium 0.1000 0.101 100 Zinc 0.1000 0.101 100 Matrix Spike(MS)/Matrix Spike Duplicate(MSD) Sample Spiked: 17080894-01A RunID: 10104 SegNo 193521 Units: mg/Kg Analysis Date: 8/30/2017 12:36:59 PM Analyst: RM Analyte Sample MS MS MS% MSD MSD MSD% RPD RPD Low High Qual Result Spike Result Recovery Spike . Result Recovery Limit Limit Limit Added Added Antimony 0.7080 100.0 .791 78.6 100.0 84 83.2 5.68 20 701 130 Arsenic 3.191 100.0 99 95.6 100.0 100 101 526 20 70 130 Barium 93.44 100.0 200 102 100.0 200 110 4.07 20 70 130 Beryllium 0.03880 100.0 100 103 100.0 110 110 6.94 20 70 130 Cadmium 0.6886 100.0 96 95.0 100.0 100 100 5.33 20 70 130 Chromium 6.004 100.0 100 94.6 100.0. 110 101 5.90 20 70. 130 Cobalt 0.8826 100.0 96 95.2 100.0 . 1001 102 6.76 20 70 1.30 Copper 138.0 100.0 240 102 100.0 240 104 0.947 20 70 130 Lead 3.463 100.0 87 83.8 100.0 90 87.0 3.65' 20 70 130 Manganese 72.18 100.01 170 93.2 100.0 170 101 4.43 20 70.' 130 Molybdenum 6.508 100.0 95 88.2 100.0 100 93.6 5.52 20 70 130 Nickel 5.344 100.0 100 94.7 100.0 110 101 5.75 20 70 130 Selenium 2.046 500.0 480 94.6 500.0 500 99.9 5.40 20 70 130 Silver 0.9311 10.00 9.7 87.6 10.00 10 93.9 6.29 20 70 130 Thallium 0.08729 100.0 84 84.1 100.0 89 88.5 5.11 20 70 130 Vanadium 7.497 100.0 110 97.7 100.01 110 104 5.50 20 70 130 Zinc 533.21200.01 7201 94.0 200.0 7501 1081 3.681, 20 70 130 Analysis: Metals 200.8 Method: EPA 200.8 Batch ID: R9892 Revision v 1 Page 8 of 14 Silver State Labs-Reno Quality Control Report ilv SerState 1135 Financial Blvd Analytical Laboratories Reno,Nv 89502 wo#: 17080894 0 Sierra Environmental Monitoring (775)857-2400 FAX:(888)398-7002 9/7/2017 www.ssalabs.com Method Blank RunlD: 9892 SegNo 189039 Units: mg/L Analysis Date: 8/22/2017 5:45:42 PM Analyst:* RM Analyte Result Rep Limit Rep Qual Antimony <0.0020 0.0020 Arsenic <0.0020 0.0020 Barium <0.010 0.010 Beryllium. <0.0020 0.0020 Cadmium <0.0020 0.0020 Chromium <0.0020 0.0020 Cobalt <0.0020 0.0020 Copper <0.0020 0.0020 Lead <0.0020 0.0020 Manganese <0.0020 0.0020 Molybdenum <0.0020 0.0020 Nickel <0.0020 0.0020 Selenium <0.010 0.010 Silver <0.0020 0.0020 Thallium <0.0010 0.0010 Vanadium <0.0020 0.0020 Zinc <0.12 0.12 SB Laboratory Control Sample(LCSI RunlD: 9892 SegNo 189029 Units: mg/L Analysis Date: 8/22/2017 4:37:25 PM Analyst: RM Analyte LCS LCS Result LCS% LCSD LCSD LCSD% RPD RPD Low High Qual Spike Recovery Spike Result Recovery Limit Limit Limit Added Added Antimony 0.1000 0.10 102 Arsenic 0.1000 0.099 99.3 Barium 0.1000 0.096 95.6 Beryllium 0.1000 0.10 102 Cadmium 0.1000 0.10 100 Chromium 0.1000 0.10 101 Cobalt 0.1000 0.10 101 Copper 0.1000 0.099 99.4 Lead 0.1000 01099 99.4 Manganese 0.1000 0.10 102 Molybdenum 0.1000 0.097 96.6 Nickel 0.1000 0.097 97.3 Selenium 0.5000 0.50 100 Silver 0.1000 0.10 100 Thallium 0.1000 0.10 101 Vanadium 0.10001 0.101 101 Zinc 0.10001 0.10 100 Matrix Spike(MS)/Matrix Spike Duplicate(MSD) Sample Spiked: 17080894-03A RunlD: 9892 SegNo 189045 Units: mg/L Revision v 1 Page 9 of 14 Silver State Labs-Reno 1135 Financial Blvd Quality Control Report SilverState 'Analyticol Laboratories Reno,NV 89502 WO#: 17080894 SSierra Environmental Monitoring (775)857-2400 FAX:(888)398-7002 9/7/2017 www.ssalabs.com Analysis Date: 8/22/2017 6:13:15 PM Analyst: RM Analyte Sample MS MS MS% MSD MSD MSD% RPD RPD Low High Qual Result Spike Result Recovery Spike Result Recovery Limit Limit Limit Added Added Antimony 007200 1.0001 1.1 108 1.000 1.0 101 6.52 201 70 130 Arsenic .003560 1.000 1.1 109 1.000 1.0 102 6.23 20 70 130 Barium 0.03304 1.000 1.0 100 1.000 0.98 94.2 5.77 20 70 130 Beryllium 0 1.000 1.1 106 1.000 0.99 98.9 6.63 20 701 130 Cadmium 0 1.000 1.1 106 1.000 1.0 100 6.01 20 70 130 Chromium .002320 1.000 1.0 104 1.000 0.99 98.4 5.32 20 70 130 Cobalt 004400 1.000 1.0 104 1.000 0.98 97.5 6.41 20 70 130 Copper 0.04792 1.0001 1.1 104 1.000 1.0 97.5 5.97 20 70 130 Lead 001640 1.000 1.0 105 1.000 0.99 99.0 5.43 20 70 130 Manganese 0.06232 1.000 1.1 106 1.000 1.1 99.5 5.70 20 7% 130 Molybdenum 0.01192 1.000 1.0 98.6 1.000 0.94 93.0 5.71 20 701 130 Nickel .004120 1.000 1.0 101 1.000 0.95 94.7 6.56 20 70 130 Selenium 0 5.000 5.4 107 5.000 5.0 101 6.04 20 70 130 Silver 0002000 0.1000 0.10 104 0.1000 0.098 98.2 5.44 20 70 130 Thallium 0 1.000 1.0 105 1.000 0.99 98.9 6.00 20 70 130 Vanadium .002080 1.000 1.1 1061 1.0001 1.01 1001 5.89 20 70 130 Zinc 0.1850 2.000 2.2 1031 2.0001 2.21 99,21 3.581 20 70 130 B Analysis: Metals 200.7 Method: EPA 200.7 Batch ID: R9950 Method Blank RunID: 9950 SegNo 190385 Units: mg/L Analysis Date: 8/24/2017 12:05:46 PM Analyst: RM Analyte Result Rep Limit Rep Qual Aluminum <0.050 0.050 Calcium <0.50 0.50 Iron <0.050 0.050 Magnesium <0.50 0.50 Potassium <0.50 0.50 Sodium I <0.501 0.50 Laboratory Control Sample(LCS1 RunID: 9950 SegNo 190321 Units: mg/L Analysis Date: 8/24/2017 9:36:04 AM Analyst: RM Analyte LCS LCS Result LCS% LCSD LCSD LCSD% RPD RPD Low High Qual Spike Recovery Spike Result Recovery Limit Limit Limit Added Added Aluminum 6.000 5.8 97.2 Calcium 30.00 30 99.7 Iron 6.000 5.9 98.4 Magnesium 30.00 29 97.4 Potassium 30.00 30 101 Sodium 30.00 30 98.4 Revision vl Page 10 of 14 SilverState Silver State Labs-Reno Quality Control Report 1135 Financial Blvd 'Analytical Laboratories Reno,NV 89502 WO#: 17080894 iSierra Environmental Monitoring (775)857-2400 FAX:(888)398-7002 9/7/2017 www.ssalabs.com Matrix Spike(MS)/Matrix Spike Duplicate(MSD) Sample Spiked: 17080894-03A RunID: 9950 SegNo 190395 Units: mg/L Analysis Date: 8/24/2017 12:27:23 PM Analyst: RM Analyte Sample MS MS MS% MSD MSD MSD% RPD RPD Low High Qual Result Spike Result Recovery Spike Result Recovery Limit Limit Limit Added Added Aluminum 0.3358 5.0001 5.1 94.8 5.000 5.4 100 5.3.5 20 70 130 Calcium 20.94 20.00 40 96.8 20.00 42 106 4.62 20 70 130 a Iron 1.001 5.000 5.6 92.6 5.000 5.9 98.6 5.14 20 70 130 Magnesium 4.666 20.00 24 96.3 20.00 25 104 6.08 20 70 130 Potassium 12.57 20.001 31 94.4 20.00 33 104 6.09 20 70 130 Sodium 42.79 20.00 58 75.2 20.00 61 90.6 5.19 20 70 130 Analysis: Mercury, Solid Method: EPA 245.5 Batch ID: R9963 Matrix Spike(MS)/Matrix Spike Duplicate(MSD) Sample Spiked: 17080907-04B RunID: 9963 SegNo 190784 Units: mg/L Analysis Date: 8/25/2017 12:38:49 PM Analyst: SK Analyte Sample MS MS MS% MSD MSD MSD% RPD RPD Low High Qual Result Spike Result Recovery Spike Result Recovery Limit Limit Limit Added Added Mercury 1 01005000P.004851 97.0 005000 .00479 95.8 .1.241 201 801 120 Analysis: Mercury Method: EPA 245.1 Batch ID: R9963 Method Blank RunID: 9963 SegNo 190777 Units: mg/L Analysis Date: 8/25/2017 12:38:49 PM Analyst: SK Analyte Result I Rep Limit I Rep Qual Mercury <.0.00011 0.0001 Laboratory Control Sample(LCS) RunID: 9963 SegNo 190778 Units: mg/L Analysis Date: 8/25/2017 12:38:49 PM Analyst: SK Analyte LCS LCS Result LCS% LCSD LCSD LCSD% RPD RPD Low High Qual Spike Recovery Spike Result Recovery Limit Limit Limit Added Added Mercury 10.0060051 0.005981 99.7 Revision v 1 Page 11 of 14 SOUTH TAHOE PUBLIC UTILITY.DI-STRICT CHAIN OF CUSTODY0 { ';tiff•:'!: 1 }N 1Cne i South Tahoe Public � °t Lab :lr•. .�rr,t to 1275 Meadow Crest Wive � 6� r' South Lake Tahoe,CA 96150 '�-. >,`. •'. Standard _ o Qiwe Phoney`5391 a5d-3-5231 �y;..,�,i�s��.Y? : - 24 Mr t - �;� � - ' cis bA SAX: 530 -541-4296- 8 fir r:v:• •riY :Va• •fS rr• .... , r✓'. A•:It rAr J : • ru Cqher r •h. C 7 •,`Nw•l g$ :rr.!:•r.. •r a• r.•! v,•r:v:::!::rr: :1 S: : v: :'{•:• ::v.: {r• Lei •S•' :'r i'r i la.' 6Mw ':r•'•'r': rrr!!:,�.•.�'.. Yr�••':1. :'i::::°:••:M:;'... ::'%:':•}::v::'::::%; '•}:::::�:%,.44 .4 .r• :l •r' �,�,{, :'r`• y ra• �:pf Cf•, - 'LA owl- Comments: relinquished by: received by: c Report fVlTB to .5 ltg/L.Note any detection.of I�T�E a 0.2-jiglL Signature L3 analyze Travel and Field Blanks only if V0Cs detected in samples. Signature r Use Calif State Write- n forth to report results of Potable stater delis �` �$ ��� Print Print . Company . Company South Tahoe•Public,Utili District r P Y �__.�� Time Time t Date: - .--1 "" ram` ' o' Date: - - Please Return all STPUD ice cheats tU .. ::•.} }}•,•r•r.'.:rt::'•r{,}}J3};t .'{!! ' ------ ri:. ;•};r{,• ::ti:•:y!: tip: Relinquished by: , ;:fr:: :•:. .;• Received ::f: ..J:. y� .r.:. rr.••:•. :;•. �.; �:.�= {��yyiiy�{ ::{{•:::. rr'.'r:S::;,:: :}. l�elin u , f - �:...{.}: :;� `1:ti33:�•1if'+ v:•'{;;:'{:•; %':::;•,;.•.�,.{{:•::}i+;f;t,,'.,�•�,�.,�•',•,G;`3i;.'rrr:!r?'•::ti: •:•:•:•::� �. Received intact Signature 'Signature Print _-- Print Received cold - Company --- ���Qa�y Custody seals Date: Time Date: Time -- Correct container Page. of �Lab,%Forms`Chain of Custody.dm U Uc/. 15 n.G rub-1 U, T = hL�k�T�hy �� 1�� �4 �e� � �r��t �iu�� ��127 a : O esd'y� August.16- a = SiM erricrr - nitri 1135 Financial-Blvd -Dear-Lab,. .-Please n-8b e--' ff..three_s pies fbr- e-f6flowi toi ls: .-Aluminum Cobalt ic e _. ntirnony _ Copper- otassi . - - r r�� turn- - - _ Ba rir -Silver agnestum ry UM Sodium -Cadmium- Manganese Thallium n -h oi° ii. mZjL .-The-centrifu. e-c-ake: m i_e-is-to- .-te'-ted f r f arni '�:` `T`L -or.Waste titer P -R ri ft Pollutant-- etais, ?1ease-,use,tho. 0 es _ et dtion lcmits ossihle-and.use the. ethods.a rp ria'te-fbr_-' - Y t ... ._ .-....... .. , _ - C 1 c tc ly Es.fC� cv� li��ce- t fc t at r r t k tto S.,. 'Port salts: �t Weight-'a.r�d d i- r 1 �l t i l a � I theth" r t , � � �� h � result� r�F r nIf � -TTLC is>.._40 X-STLC.-- Please return the,ice-chest_a-hd. ice-packs, Ter .F owers abbrat&y Direotor- DALabTOrfnslPriority�Pcillutants-r erttrifit�ge� ake\P-dorityPollutantMetals=SEM.dac_ .Pale 1.3 of 14 silSilver State Labs-Reno Definitions & Qualifiers verState 1135 Financial Blvd, Analytical. Laboratories Reno,NV 89502 WO#: 17080894 Sierra Environmental Monitoring (775)857-2400 FAX:(888)398-7002 Date: 9/7/2017 www.ssalabs.com Definitions: LCS:Laboratory Control Sample;prepared by adding a known mass of target analytes to a specified amount of de-ionized water and prepared with the batch of samples,used to calculate Accuracy(%REC). LCSD:LCS Duplicate;used to calculate both Accuracy(%REC)and Precision(%RPD) MBLK: Method Blank;a sample of similar matrix that is processed simultaneously with and under the same conditions as samples through all steps of the analytical procedure,and in which no target analytes or interferences are present at concentrations that impact the analytical results for sample analyses. MS:Matrix Spike;prepared by adding a known mass of target analytes to a specified amount of matrix sample for which an independent estimate of target analyte concentration is available,used to calculate Accuracy(%REC) MSD:Matrix Spike Duplicate;used to calculate both Accuracy(%REC)and Precision(%RPD) RPD:Relative Percent Difference;comparison between sample and duplicate and/or MS and MSD. PQL:Practical Quantitation Limit;the limit to which data is quantitated for reporting. MDL:Method Detection Limit;the limit to which the instrument can reliably detect. MCL: Maximum Contaminant Level;value set according to EPA guidelines. Qualifiers: *-Analyte exceeds Safe Drinking Water Act MCL,does not meet drinking water standards. B-Analyte found above the PQL in associated method blank. G-Calibration blank analyte detected above PQL. H-Sample analyzed beyond holding time for this parameter. J-Estimated Value;Analyte found between MDL and PQL limits. L-Sample concentration is at least 5 times greater than spike contribution.Spike recovery criteria do not apply. R-RPD between sample and duplicate sample outside the RPD acceptance limits. S-Batch MS and/or MSD were outside acceptance limits,batch LCS was acceptable. W-Sample temperature when recieved was out of limit as specified by method. Revision v 1 Page 14 of 14 u7 ENVIRONMENTAL`��-- Analytical September 21, 2017 South Tahoe Public Utility District Lab ID : SP 1710078 1275 Meadow Crest Drive Customer 2-11369 South Lake Tahoe, CA 96150 Laboratory Report Introduction: This report package contains total of 44 pages divided into 3 sections: Case Narrative (3 pages) : An overview of the work performed at FGL. Sample Results (17 pages) : Results for each sample submitted. Quality Control (24 pages) : Supporting Quality Control (QC)results. Case Narrative This Case Narrative pertains to the following samples: Sample Description Date Date FGL Lab ID# Matrix Sampled Received Raw Influent-Grab 08/15/2017 08/17/2017 SP 1710078-001 WW Final Effluent-Grab 08/15/2017 08/17/2017 SP 1710078-002 WW Raw Influent 08/15/2017 08/17/2017 SP 1710078-003 WW Final Effluent 08/15/2017 08/17/2017 SP 1710078-004 WW Centrifuge Cake 08/15/2017 08/17/2017 SP 1710078-005 Slg Sampling and Receipt Information: All samples were received in acceptable condition and within temperature requirements,unless noted on the Condition Upon Receipt(CUR) form. All samples arrived at 3 'C. All samples were prepared and analyzed within the method specified hold time. All samples were checked for pH if acid or base preservation is required(except for VOAs). For details of sample receipt information,please see the attached Chain of Custody and Condition Upon Receipt Form. Quality Control: All samples were prepared and analyzed according to the following tables: Organic QC 3520 08/22/2017:210.031 All preparation quality controls are within established criteria. 08/18/2017:210454 All preparation quality controls are within established criteria,except: The following note applies to 1,1-Dichloroethylene: 5030B 435 Sample matrix may be affecting this analyte.Data was accepted based on the LCS or CCV recovery. The following note applies to 1,1-D ichloro ethylene: 435 Sample matrix may be affecting this analyte.Data was accepted based on the LCS or CCV recovery. 08/21/2017:210459 All preparation quality controls are within established criteria. Page 1 of 44 Corporate Offices&Laboratory Office&Laboratory Office&Laboratory Office&Laboratory Office&Laboratory 853 Corporation Street 2500 Stagecoach Road 563 E.Lindo Avenue 3442 Empresa Drive,Suite D 9415 W.Goshen Avenue Santa Paula,CA 93060 Stockton,CA 95215 Chico,CA 95926 San Luis Obispo,CA 93401 Visalia,CA 93291 TEL:(805)392-2000 TEL:(209)942-0182 TEL:(530)343-5818 TEL:(805)783-2940 TEL:(559)734-9473 Env FAX:(805)525-4172/Ag FAX:(805)392-2063 FAX:(209)942-0423 FAX:(530)343-3807 FAX:(805)783-2912 FAX:(559)734-8435 CA ELAP Certification No.1573 CA ELAP Certification No.1563 CA ELAP Certification No.2670 CA ELAP Certification No.2775 CA ELAP Certification No.2810 September 21, 2017 Lab ID : SP 1710078 South Tahoe Public Utility District Customer : 2-11369 Organic QC 08/18/2017:210456 All preparation quality controls are within established criteria,except: The following note applies to 1,2-Dichloroethane-d4: 5030B 310 LCS above Acceptance Range(AR). Samples which were non detect for this analyte were accepted. The following note applies to 1,2-Dichloroethane-d4: 435 Sample matrix may be affecting this analyte.Data was accepted based on the LCS or CCV recovery. 08/26/2017:212821 All analysis quality controls are within established criteria,except: The following note applies to Endosulfan II,Endosulfan Sulfate,Endrin,Methoxychlor,p,p-DDD,p,p- DDT: 608/8081 355 CCV not within Acceptance Range(AR).Results were reported.with client approval. The following note applies to Endosulfan II,Endosulfan Sulfate,Endrin,Methoxychlor,p,p-DDD,p,p- DDT: 360 CCV above Acceptance Range(AR). Samples which were non detect for this analyte were accepted. 08/26/2017:213017 All analysis quality controls are within established criteria,except: The following note applies to Alpha BHC: 360 CCV above Acceptance Range(AR). Samples which were non detect for this analyte were accepted. 08/21/2017:209988 All preparation quality controls are within established criteria,except: The following note applies to Endrin: 436 Blank Spike(BS.)not within Acceptance Range(AR).Data was accepted based on the LCS or CCV recovery. The following note applies to Endrin,Tetrachloro-m-xylene: 410 Relative Percent Difference(RPD)not within Maximum Allowable Value(MAV).Data was accepted based on the LCS or CCV recovery. 08/25/2017:212741 All analysis quality controls are within established criteria,except: 8082 The following note applies to Tetrachloro-m-xylene: 355 CCV not within Acceptance Range(AR).Results were reported with client approval. 08/22/2017:210030 All preparation quality controls are within established criteria,except: 8082A The following note applies to PCB 1016/1242- 1,PCB 1260- 1,Tetrachloro-m-xylene: 410 Relative Percent Difference(RPD)not within Maximum Allowable Value(MAV).Data was accepted based on the LCS or CCV recovery. 08/18/2017:213071 All analysis quality controls are within established criteria,except: 8260B The following note applies to 1,2,3-Trichlorobenzene, 1,2,4-Trimethylbenzene, 1,2-Dichloroethane(EDC), Bromobenzene,cis-1,3-Dichloropropene,Hexachl: 360 CCV above Acceptance Range(AR). Samples which were non detect for this analyte were accepted. 08/21/2017:213073 All analysis quality controls are within established criteria,except: The following note applies to 1,2,3-Trichlorobenzene, 1,2-Dichloroethane(EDC),Acrolein,Acrylonitrile, Dichlorodifluoromethane,Vinyl Acetate: 360 CCV above Acceptance Range(AR). Samples which were non detect for this analyte were accepted. 08/29/2017:213079 All analysis quality controls are within established criteria. Page 2 of 44 September 21, 2017 Lab ID : SP 1710078 South Tahoe Public Utility District Customer : 2-11369 Organic QC 8270C 09/07/2017:213436 All analysis quality controls are within established criteria. 09/08/2017:213547 All analysis quality controls are within established criteria. 08/22/2017:210027 All preparation quality controls are within established criteria,except: The following note applies to 1,2,4-Trichlorobenzene, 1,4-Dichlorobenzene,2-Fluorobiphenyl,2,4- Dinitrotoluene,4-Nitrophenol,Acenaphthene,Pentachl: 435 Sample matrix may be affecting this analyte.Data was accepted based on the LCS or CCV recovery. Certification:: I certify that this data package is in compliance with ELAP standards,both technically and for completeness, except for any conditions listed above. Release of the data contained in this data package is authorized by the Laboratory Director or his designee, as verified by the following electronic signature. KD:VT Digitally signed by Da\id,rerz,B.A.,M.B.A. Approved By David Terz,B.A.,M.B.A. Title:QA Director Date:2017-09-23 Page 3 of 44 Analytical Chemists September 21, 2017 Lab ID : SP 1710078-001 Customer ID : 2-11369 South Tahoe Public Utility District 1275 Meadow Crest Drive Sampled On : August 15, 2017-11:13 South Lake Tahoe, CA 96150 Sampled By : D. Trebotich Received On : August 17, 2017-11:45 Matrix : Waste Water Description : Raw Influent-Grab Project : Priority Pollutants Sample Result-Organic Constituent Result PQL Units Note Sample Preparation Sample Analysis Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzenet 98.3 79-119 % 5030B 08/21/17:210459 8260B 08/21/17:213073 Dibromofluoromethariel 93.8 84-136 % 5030B 08/21/17:210459 8260B 08/21/17:213073 1,2-Dichloroethane-d4$ 111 58-166 % 5030B 08/21/17:210459 8260B 08/21/17:213073 Toluene-d8l 102 88.-111 % 5030B 08/21/17:210459 8260B 08/21/17:213073 Acetone 70 10 ug/L 5030B 08/21/17:210459 8260B 08/21/17:213073 Acrolein ND 100 ug/L 5030B 08/21/17:210459 8260B 08/21/17:213073 Acrylonitrile ND 100 ug/L 5030B 08/21/17:210459 8260B 08/21/17:213073 Benzene ND 0.5 ug/L 5030B 08/21/17:210459 8260B 08/21/17:213073 Bromobenzene ND 1 ug/L 5030B 08/21/17:210459 8260B 08/21/17:213073 Bromochloromethane ND 1 ug/L 5030B 08/21/17:210459 8260B 08/21/17:213073 Bromodichloromethane ND 1 ug/L 5030B 08/21/17:210459 8260B 08/21/17:213073 Bromoform ND 1 ug/L 5030B 08/21/17:21045.9 8260B 08/21/17:213073 Bromomethane ND 1 ug/L 5030B 08/21/17:210459 8260B 08/21/17:213073 tert-Butanol ND 5 ug/L 5030B 08/21/17:210459 8260B 08/21/17:213073 2-Butanone(MEK) ND 10 ug/L 5030B 08/21/17:210459 8260B 08/21/17:213073 n-Butylbenzene ND 1 ug/L 5030B 08/21/17:210459 8260B 08/21/17:213073 sec-Butylbenzene ND 1 ug/L 5030B 08/21/17:210459 8260B 08/21/17:213073 tert-Butylbenzene ND 1 ug/L 5030B 08/21/17:210459 8260B 08/21/17:213073 Carbon Disulfide ND 1 ug/L 5030B 08/21/17:210459 8260B 08/21/17:213073 Carbon Tetrachloride ND 1 ug/L 5030B 08/21/17:210459 8260B 08/21/17:213073 Chlorobenzene ND 1 ug/L 5030B 08/21/17:210459 8260B 08/21/17:213073 Chloroethane ND 1 ug/L 5030B 08/21/17:210459 8260B 08/21/17:213073 Chloroform ND 1 ug/L 5030B 08/21/17:210459 8260B 08/21/17:213073 Chloromethane ND 1 ug/L 5030B 08/21/17:210459 8260B 08/21/17:213073 2-Chlorotoluene ND 1 ug/L 5030B 08/21/17:210459 8260B 08/21/17:213073 4-Chlorotoluene ND 1 ug/L 5030B 08/21/17:210459 8260B 08/21/17:213073 Dibromochloromethane ND 2 ug/L 5030B 08/21/17:210459 8260B 08/21/17:213073 Dibromomethane ND 1 ug/L 5030B 08/21/17:210459 8260B 08/21/17:213073 1,2-Dichlorobenzene ND 1 ug/L 5030B 08/21/17:210459 8260B 08/21/17:213073 1,3-Dichlorobenzene ND 1 ug/L 5030B 08/21/17:210459 8260B 08/21/17:213073 1,4-Dichlorobenzene ND 1 ug/L 5030B 08/21/17:210459 8260B 08/21/17:213073 Dichlorodifluoromethane ND 1 ug/L 5030B 08/21/17:210459 8260B 08/21/17:213073 191-Dichloroethane ND 1 ug/L 5030B 08/21/17:210459 8260B 08/21/17:213073 1,2-Dichloroethane ND 1 ug/L 5030B 08/21/17:210459 8260B 08/21/17:213073 1,1-Dichloroethylene ND 1 ug/L 5030B 08/21/17:210459 8260B 08/21/17:213073 Page 4 of 44 Corporate Offices&Laboratory Office&Laboratory Office&Laboratory Office&Laboratory Office&Laboratory 853 Corporation Street 2500 Stagecoach Road 563 E.Lindo Avenue 3442 Empresa Drive,Suite D 9415 W Goshen Avenue Santa Paula,CA 93060 Stockton,CA 95215 Chico,CA 95926 San Luis Obispo,CA 93401 Visalia,CA 93291 TEL:(805)392-2000 TEL:(209)942-0182 TEL:(530)343-5818 TEL:(805)783-2940 TEL:(559)734-9473 Env FAX:(805)525-4172/Ag FAX:(805)392-2063 FAX:(209)942-0423 FAX:(530)343-3807 FAX:(805)783-2912 FAX:(559)734-8435 CA ELAP Certification No.1573 CA ELAP Certification No.1563 CA ELAP Certification No.2670 CA ELAP Certification No.2775 CA ELAP Certification No.2810 September 21, 2017 Lab ID : SP 1710078-001 Description : Raw Influent-Grab Customer ID : 2-11369 Sample Result- Organic Constituent Result PQL Units Note Sample Preparation Sample Analysis Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1 ug/L 5030E 08/21/17:210459 8260B 08/21/17:213073 trans-l,2-Dichloroethylene ND 1 ug/L 5030B 08/21/17:210459 8260B 08/21/17:213073 1,2-Dichloropropane ND 1 ug/L 5030B 08/21/17:210459 8260E 08/21/17:213073 1,3-Dichloropropane ND 1 ug/L 5030B 08/21/17:210459 8260E 08/21/17:213073 2,2-Dichloropropane ND 1 ug/L 5030B 08/21/17:210459 8260B 08/21/17:213073 1,1-Dichloropropene ND 1 ug/L 5030B 08/21/17:210459 826oB 08/21/17:213073 cis-1,3-Dichloropropene ND 1 ug/L 5030B 08/21/17:210459 826oB 08/21/17:213073 trans-1,3-Dichloropropene ND 1 ug/L 5030E 08/21/17:210459 8260B 08/21/17:213073 Di-isopropyl ether(DIPE) ND 0.5 ug/L 5030B 08/21/17:210459 8260E 08/21/17:213073 Ethyl Benzene ND 0.5 ug/L 5030B 08/21/17:210459 8260B 08/21/17.213073 Ethyl tert-butyl ether (ETBE) ND 0.5 ug/L 5030B 08/21/17:210459 8260B 08/21/17:213073 Hexachlorobutadiene ND 1 ug/L 5030B 08/21/17:210459 8260B 08/21/17:213073 2-Hexanone ND 10 ug/L 5030B .08/21/17:210459 8260B 08/21/17:213073 Isopropylbenzene ND 1 ug/L 5030B 08/21/17:210459 8260E 08/21/17:213073 p-Isopropyltoluene ND 1 ug/L 5030B 08/21/17:210459 826oB 08/21/17:213073 Methyl tert-butyl ether (MTBE) ND 0.2 ug/L 5030B 08/21/17:210459 8260B 08/21/17:213073 4-Methyl-2-pentanone ND 10 ug/L 5030B 08/21/17:210459 8260E 08/21/17:213073 (MIBK) Methylene Chloride ND 1 ug/L 5030B 08/21/17:210459 8260B 08/21/17:213073 Naphthalene ND 1 ug/L 5030B 08/21/17:210459 8260B 08/21/17:213073 n-Propylbenzene ND 1 ug/L 5030B 08/21/17:210459 8260B 08/21/17:213073 Styrene 6 1 ug/L 5030B 08/21/17:210459 8260B 08/21/17:213073 tert-Amyl methyl ether (TAME) ND 0.5 ug/L 5030B 08/21/17:210459 8260B 08/21/17:213073 1,1,1,2-Tetrachloroethane ND 1 ug/L 5030B 08/21/17:210459 8260B 08/21/17:213073 1,1,2,2-Tetrachloroethane ND 1 ug/L 5030B 08/21/17:210459 8260B 08/21/17:213073 Tetrachloroethylene ND 1 ug/L 5030E 08/21/17:210459 8260E 08/21/17:213073 Toluene 1.9 0.5 ug/L 5030B 08/21/17:210459 8260B 08/21/17:213073 1,2,3-Trichlorobenzene ND 1 ug/L 5030B 08/21/17:210459 8260B 08/21/17:213073 1,2,4-Trichlorobenzene ND 1 ug/L 5030B 08/21/17:210459 8260B 08/21/17:213073 1,1,1-Trichloroethane ND 1 ug/L 5030B 08/21/17:210459 8260B 08/21/17:213073 1,1,2-Trichloro ethane ND 1 ug/L 5030B 08/21/17:210459 8260B 08/21/17:213073 Trichloroethylene ND 1 ug/L 5030B 08/21/17:210459 8260B 08/21/17:213073 Trichlorofluoromethane ND 1 ug/L 5030B 08/21/17:210459 8260B 08/21/17:213073 1,2,4-Trimethylbenzene ND 1 ug/L 5030B 08/21/17:210459 8260B 08/21/17:213073 1,3,5-Trimethylbenzene ND 1 ug/L 5030B 08/21/17:210459 8260B 08/21/17:213073 Vinyl Acetate ND 100 ug/L 5030E 08/21/17:210459 8260B 08/21/17:213073 Vinyl Chloride ND 1 ug/L 5030B 08/21/17:210459 8260B 08/21/17:213073 Xylenes ND -- ug/L 5030B 08/21/17:210459 8260E 08/21/17:213073 Xylenes m,p ND 0.5 ug/L 5030B 08/21/17:210459 8260B 08/21/17:213073 Page 5 of 44 September 21, 2017 Lab ID SP 1710078-001 Description : Raw Influent-Grab Customer ID : 2-11369 Sample Result-Organic Constituent Result PQL Units Note Sample Preparation Sample Analysis Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 0.5 ug/L 503OB 08/21/17:210459 8260E 08/21/17:213073 ND=Non-Detected.PQL=Practical Quantitation Limit.$Surrogate.*PQL adjusted for dilution. Page 6 of 44 ENVIRONMENTA AGRICULTURAL Analytical Chemists, September 21, 2017 Lab ID : SP 1710078-002 Customer ID : 2-113 69 South Tahoe Public Utility District 1275 Meadow Crest Drive Sampled On : August 15, 2017-11:45 South Lake Tahoe,CA 96150 Sampled By : D. Trebotich Received On : August 17, 2017-11:45 Matrix : Waste Water Description : Final Effluent- Grab Project : Priority Pollutants Sample Result- Organic Constituent Result PQL Units Note Sample Preparation Sample Analysis Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene$ 101 79-119 % 5030B 08/18/17:210454 8260E 08/18/17:213071 Dibromofluoromethane$ 91.7 84-136 % 5030B 08/18/17:210454 8260B 08/18/17:213071 1,2-Dichloroethane-d4$ 110 58-166 % 5030B 08/18/17:210454 8260B 08/18/17:213071 Toluene-d8$ 100 88-111 % 5030B 08/18/17:210454 8260B 08/18/17:213071 Acetone ND 10 ug/L 5030B 08/18/17:210454 8260B 08/18/17:213071 Acrolein ND 100 ug/L 5030E 08/18/17:210454 8260B 08/18/17:213071 Acrylonitrile ND _ 100 ug/L 5030B 08/18/17:210454 8260B 08/18/17:213071 Benzene ND 0.5 ug/L 5030B 08/18/17:210454 8260B 08/18/17:213071 Bromobenzene ND 1 ug/L 5030B 08/18/17:210454 8260B 08/18/17:213071 Bromochloromethane ND 1 ug/L 5030E 08/18/17:210454 8260B 08/18/17:213071 Bromodichloromethane ND 1 ug/L 5030B 08/18/17:210454 8260B 08/18/17:213071 Bromoform ND 1 ug/L 5030B 08/18/17:210454 8260B 08/18/17:213071 Bromomethane ND 1 ug/L 5030B 08/18/17:210454 8260E 08/18/17:213071 tert-Butanol ND 5 ug/L 5030B 08/18/17:210454 8260B 08/18/17:213071 2-Butanone(MEK) ND 10 ug/L 5030B 08/18/17:210454 8260B 08/18/17:213071 n-Butylbenzene ND 1 ug/L 5030B 08/18/17:210454 8260B 08/18/17:213071 sec-Butylbenzene ND 1 ug/L 5030B 08/18/17:210454 8260E 08/19/17:213071 tert-Butylbenzene ND 1 ug/L 5030B 08/18/17:210454 8260B 08/18/17:213071 Carbon Disulfide ND 1 ug/L 5030B 08/18/17:210454 8260B 08/18/17:213071 Carbon Tetrachloride ND 1 ug/L 5030B 08/18/17:210454 8260E 08/18/17:213071 Chlorobenzene ND 1 ug/L 5030B 08/18/17:210454 8260B 08/18/17:213071 Chloroethane ND 1 ug/L 5030B 08/18/17:210454 8260E 08/18/17:213071 Chloroform 0.565 1 ug/L 5030B 08/18/17:210454 8260E 08/18/17:213071 Chloromethane ND 1 ug/L 5030B 08/18/17:210454 8260B 08/18/17:213071 2-Chlorotoluene ND 1 ug/L 5030B 08/18/17:210454 8260E 08/18/17:213071 4-Chlorotoluene ND 1 ug/L 5030B 08/18/17:210454 8260E 08/18/17:213011 Dibromochloromethane ND 2 ug/L 5030E 08/18/17:210454 8260B 08/18/17:213071 Dibromomethane ND 1 ug/L 5030B 08/18/17:210454 8260B 08/18/17:213071 1,2-Dichlorobenzene ND 1 ug/L 5030B 08/18/17:210454 8260B 08/18/17:213071 1,3-Dichlorobenzene ND 1 ug/L 5030B 08/18/17:210454 8260B 08/18/17:213071 1,4-Dichlorobenzene ND 1 ug/L 5030B 08/18/17:210454 8260E 08/18/17:213071 Dichlorodifluoromethane ND 1 ug/L 5030E 08/18/17:210454 8260B 08/18/17:213071 1,1-Dichloroethane ND 1 ug/L 5030B 08/18/17:210454 8260B 08/18/17:213071 1,2-Dichloroethane ND 1 ug/L 5030B 08/18/17:210454 8260B 08/18/17:2130/1 191-Dichloroethylene I ND I 1 I ug/L I I 5030B 08/18/17:210454 8260E 08/18/17:213071 Page 7 of 44 Corporate Offices&Laboratory Office&Laboratory Office&Laboratory, Office&Laboratory Office&Laboratory 853 Corporation Street 2500 Stagecoach Road 563 E.Lindo Avenue 3442 Empresa Drive,Suite D 9415 W.Goshen Avenue Santa Paula,CA 93060 Stockton,CA 95215 Chico,CA 95926 San Luis Obispo,CA 93401 Visalia,CA 93291 TEL:(805)392-2000 TEL:(209)942-0182 TEL:(530)343-5818 TEL:(805)783-2940 TEL:(559)734-9473 Env FAX:(805)525-4172/Ag FAX:(805)392-2063 FAX:(209)942-0423 FAX:(530)343-3807 FAX:(805)783-2912 FAX:(559)734-8435 CA ELAP Certification No.1573 CA ELAP Certification No.1563 CA ELAP Certification No.2670 CA ELAP Certification No.2775 CA ELAP Certification No.2810 September 21, 2017 Lab ID : SP 1710078-002 Description : Final Effluent-Grab Customer ID : 2-11369 Sample Result- Organic Constituent Result PQL Units Note Sample Preparation Sample Analysis Method Date/ID I Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1 ug/L 5030B 08/18/17:210454 826oB 08/18/17:213071 trans-l,2-Dichloroethylene ND 1 ug/L 5030B 08/18/17:210454 8260B 08/18/17:213071 1,2-Dichloropropane ND 1 ug/L 5030B 08/18/17:210454 8260E 08/18/17:213071 1,3-Dichloropropane ND 1 ug/L 5030B 08/18/17:210454 826oB 08/18/17:213071 2,2-Dichloropropane ND 1 ug/L 5030B 08/18/17:210454 826oB 08/18/17:213071 151-Dichloropropene ND 1 ug/L 5030B 08/18/17:210454 826oB 08/18/17:213071 cis-1,3-Dichloropropene ND 1 ug/L 5030B 08/18/17:210454 8260E 08/18/17:213071 trans-l,3-Dichloropropene ND 1 ug/L 5030E 08/18/17:210454 826oB 08/18/17:213071 Di-isopropyl ether(DIPE) ND 0.5 ug/L 5030B 08/18/17:210454 8260E 08/18/17:213071 Ethyl Benzene ND 0.5 ug/L 5030B 08/18/17:210454 8260E 08/18/17:213071 Ethyl tert-butyl ether (ETBE) ND 0.5 ug/L 5030B 08/18/17:210454 8260B 08/18/17:213071 Hexachlorobutadiene ND 1 ug/L 5030B 08/18/17:210454 8260B 08/18/17:213071 2-Hexanone ND 10 ug/L 5030B 08/18/17:210454 826oB 08/18/17:213071 Isopropylbenzene ND 1 ug/L 5030B 08/18/17:210454 826oB 08/18/17:213071 p-Isopropyltoluene ND 1 ug/L 5030B 08/18/17:210454 826oB 08/18/17:213071 Methyl tert-butyl ether �./ (MTBE) ND 0•2 u5/L 5030B 08/18/17:210454 8260B 08/18/17:213071 4-Methyl-2-pentanone (MIBK) ND 10 ug/L 5030B 08/18/17:210454 8260B 08/18/17:213071 Methylene Chloride ND 1 ug/L 5030B 08/18/17:210454 826oB 08/18/17:213071 Naphthalene ND 1 ug/L 5030E 08/18/17:210454 826oB 08/18/17:213071 n-Propylbenzene ND 1 ug/L 5030B 08/18/17:210454 826oB 08/18/17:213071 Styrene ND 1 ug/L 5030B 08/18/17:210454 8260B 08/18/17:213071 tert-Amyl methyl ether (TAME) ND 0.5 ug/L 5030B 08/18/17:210454 8260B 08/18/17:213071 1,1,1,2-Tetrachloroethane ND 1 ug/L 5030B 08/18/17:210454 8260B 08/18/17:213071 1,1,2,2-Tetrachloroethane ND 1 ug/L 5030B 08/18/17:210454 8260B 08/18/17:213071 Tetrachloroethylene ND 1 ug/L 5030B 08/18/17:210454 8260B 08/18/17:213071 Toluene 0.455 0.5 ug/L 5030E 08/18/17:210454 8260B 08/18/17:213071 1,2,3-Trichlorobenzene ND 1 ug/L 5030B 08/18/17:210454 8260B 08/18/17:213071 1,2,4-Trichlorobenzene ND 1 ug/L 5030B 08/18/17:210454 8260B 08/18/17:213071 19191-Trichloroethane ND 1 ug/L 5030E 08/18/17:210454 8260B 08/18/17:213071 1,1,2-Trichloroethane ND 1 ug/L 5030B 08/18/17:210454 8260B 08/18/17:213071 Trichloroethylene ND 1 ug/L 5030E 08/18/17:210454 8260B 08/18/17:213071 Trichlorofluoromethane ND 1 ug/L 5030B 08/18/17:210454 8260B 08/18/17:213071 1,2,4-Trimethylbenzene ND 1 ug/L 5030B 08/18/17:210454 8260B 08/18/17:213071 1,3,5-Trimethylbenzene ND 1 ug/L 5030B 08/18/17:210454 8260B 08/18/17:213071 Vinyl Acetate ND 100 ug/L 5030E 08/18/17:210454 8260B 08/18/17:213071 Vinyl Chloride ND 1 ug/L 5030B 08/18/17:210454 8260B 08/18/17:213071 Xylenes ND -- ug/L 5030B 08/18/17:210454 8260B 08/18/17:213071 Xylenes m,p I ND 1 0.5 1 ug/L I I 5030B 08/18/17:210454 8260B 08/18/17:213071 Page 8 of 44 September 21, 2017 Lab ID : SP 1710078-002 Description : Final Effluent-Grab Customer ID : 2-11369 Sample Result- Organic Constituent Result PQL Units Note Sample Preparation Sample Analysis Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 0.5 ug/L 5030B 08/18/17:210454 8260B 08/18/17:213071 ND=Non-Detected.PQL=Practical Quantitation Limit.$Surrogate.*PQL adjusted for dilution. Page 9 of 44 AnalyticalENVIRONMENTAL AGRICULTURAL September 21, 2017. Lab ID : SP 1710078-003 Customer ID : 2-11369 South Tahoe Public Utility District 1275 Meadow Crest Drive Sampled On : August 15, 2017-00:00 South Lake Tahoe, CA 96150 Sampled By : Ops Received On : August 17, 2017-11:45 Matrix : Waste Water Description : Raw Influent Project : Priority Pollutants .Sample Result- Organic Constituent Result PQL Units Note Sample Preparation Sample Analysis Method Date/ID Method Date/ID EPA 8081 Tetrachloro-m-xylenet 9.9 15-143 % 608/8081 08/21/17:209988 608/8081 08/26/17:212821 Aldrin ND 0.05 ug/L 608/8081 08/21/17:209988 608/8081 08/26/17:212821 Alpha BHC ND 0.05 ug/L 608/8081 08/21/17:209988 608/8081 08/26/17:213017 Beta BHC ND 0.05 ug/L 608/8081 08/21/17:209988 608/8081 08/26/17:212821 Delta BHC ND 0.05 ug/L 608/8081 08/21/17:209988 608/8081 08/26/17:212821 Gamma BHC(Lindane) ND 0.05 ug/L 608/8081 08/21/17:209988 608/8081 08/26/17:212821 Chlordane ND 0.1 ug/L 608/8081 08/21/17:209988 608/8081 08/26/17:212821 alpha-Chlordane ND 0.05 ug/L 608/8081 08/21/17:209988 608/8081 08/26/17:212821 gamma-Chlordane ND 0.05 ug/L 608/8081 08/21/17:209988 608/8081 08/26/17:212821 4,4-DDD ND 0.05 ug/L 608/8081 08/21/17:209988 608/8081 08/26/17:212821 4,4-DDE ND 0.05 ug/L 608/8081 08/21/17:209988 608/8081 08/26/17:212821 4,4-DDT ND 0.05 ug/L 608/8081 08/21/17:209988 608/8081 08/26/17:212821 Dieldrin ND 0.05 ug/L 608/8081 08/21/17:209988 608/8081 08/26/17:212821 Endosulfan I ND 0.05 ug/L 608/8081 08/21/17:209988 608/8081 08/26/17:212821 Endosulfan II ND 0.05 ug/L 608/8081 08/21/17:209988 608/8081 08/26/17:212821 Endosulfan Sulfate ND 0.05 ug/L 608/8081 08/21/17:209988 608/8081 08/26/17:212821 Endrin ND 0.05 ug/L- 608/8081 08/21/17:209988 608/8081 08/26/17:212821 Endrin Aldehyde ND 0.05 ug/L 608/8081 08/21/17:209988 608/8081 08/26/17:212821 Endrin Ketone ND 0.05 ug/L 608/8081 08/21/17:209988 608/8081 08/26/17:212821 Heptachlor ND 0.05 ug/L 608/8081 08/21/17:209988 608/8081 08/26/17:212821 Heptachlor Epoxide ND 0.05 ug/L 608/8081 08/21/17:209988 608/8081 08/26/17:212821 Methoxychlor ND 0.1 ug/L 608/8081 08/21/17:209988 608/8081 08/26/17:212821 Toxaphene I ND 1 0.5 1 ug/L 1 1 608/8081 08/21/17:209988 698/8081 08/26/17:212821 EPA 8082 Tetrachloro-m-xylenet 17.1 26-102 % 8082A 08/22/17:210030 8082 08/25/17:212741 PCB 1016/1242 ND 0.5 ug/L 8082A 08/22/17:210030 8082 08/25/17:212741 PCB 1221 ND 0.5 ug/L 8082A 08/22/17:210030 8082 08/25/17:212741 PCB 1232 ND 0.5 ug/L 8082A 08/22/17:210030 8082 08/25/17:212741 PCB 1248 ND 0.5 ug/L 8082A 08/22/17:210030 8082 08/25/17:212741 PCB 1254 ND 0.5 ug/L 8082A 08/22/17:210030 8082 08/25/17:212741 PCB 1260 ND 0.5 ug/L 8082A 08/22/17:210030 8082 08/25/17:212741 PCB 1242 ND 1 0.5 1 ug/L I I 8082A 08/22/17:210030 8082 08/25/17:212741 EPA 8270 2-Fluorobiphenyl$ 27.9 26-97 % 3520 08/22/17:210031 8270C 09/07/17:213436 2-Fluorophenoll 29.9 0-114 % 3520 08/22/17:210031 8270C 09/07/17:213436 Page 10 of 44 Corporate Offices&Laboratory Office&Laboratory Office&Laboratory Office&Laboratory Office&Laboratory 853 Corporation Street 2500 Stagecoach Road 563 E.Lindo Avenue 3442 Empresa Drive,Suite D 9415 W.Goshen Avenue Santa Paula,CA 93060 Stockton,CA 95215 Chico,CA 95926 San Luis Obispo,CA 93401 Visalia,CA 93291 TEL:(805)392-2000 TEL:(209)942-0182 TEL:(530)343-5818 TEL:(805)783-2940 TEL:(559)734-9473 Env FAX:(805)525-4172/Ag FAX:(805)392-2063 FAX:(209)942-0423 FAX:(530)343-3807 FAX:(805)783-2912 FAX:(559)734-8435 CA ELAP Certification No.1573 CA ELAP Certification No.1563 CA ELAP Certification No.2670 CA ELAP Certification No.2775 CA ELAP Certification No.2810 September 21, 2017 Lab ID : SP 1710078-003 Description : Raw Influent Customer ID : 2-11369 Sample Result- Organic Constituent Result PQL Units Note Sample Preparation Sample Analysis Method Date/ID Method Date/ID EPA 8270 Nitrobenzene-d5$ 25.2 22-92 % 3520 08/22/17:210031 8270C 09/07/17:213436 Phenol-d6t 33.3 0-105 % 3520 08/22/17:210031 8270C 09/07/17:213436 p-Terphenyl-dl4l 17.5 20-118 % 3520 08/22/17:210031 8270C 09/07/17:213436 2,4,6-Tribromophenoll 46.3 0-133 % 3520 08/22/17:210031 8270C 09/07/17:213436 Acenaphthene ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Acenaphthylene ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Aniline ND 20 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Anthracene ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 1,2-Diphenylhydrazine ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Benzidine ND 20 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Benzo(a)anthracene ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Benzo(b)fluoranthene ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Benzo(k)fluoranthene ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Benzo(g,h,i)perylene ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Benzo(a)pyrene ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Benzoic Acid 100 20 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Benzylalcohol ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 4-Bromophenylphenylether ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Butylbenzylphthalate ND 20 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 (2-bis ' bis(2- ethOXy)methane ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Chlorbis(2-Chloroethyl)ether ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 bis(2-Chloroisopropyl)ether ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 bis(2-Ethylhexyl)phthalate ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 4-Chloroaniline ND 20 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 4-Chloro-3-methylphenol ND 20 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 2-Chloronaphthalene ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 2-Chlorophenol ND 20 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 4-Chlorophenylphenylether ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Chrysene ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Dibenzo(a,h)anthracene ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Dibenzofuran ND 20 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Di-n-butylphthalate ND 20 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 1,2-Dichlorobenzene ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 1,3-Dichlorobenzene ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 1,4-Dichlorobenzene ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 3,3'-Dichlorobenzidine ND 20 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 2,4-Dichlorophenol' ND .20 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Diethylphthalate ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Page 11 of 44 September 21, 2017 Lab ID : SP 1710078-003 Description : Raw Influent Customer ID : 2-11369 Sample Result- Organic Constituent Result PQL Units Note Sample Preparation Sample Analysis Method Date/ID Method Date/ID EPA 8270 2,4-Dimethylphenol ND 20 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Dimethylphthalate ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 4,6-Dinitro-2-methylphenol ND 20 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 2,4-Dinitrophenol ND 50 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 2,4-Dinitrotoluene ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 2,6-Dinitrotoluene ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Di-n-octylphthalate ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Fluoranthene ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Fluorene ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Hexachlorobenzene ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Hexachlorobutadiene ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Hexachlorocyclopentadiene ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Hexachloroethane ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Indeno(1,2,3-c,d)pyrene ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Isophorone ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 2-Methylnaphthalene ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 2-Methylphenol ND 20 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 3-and 4-Methylphenol 20 20 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Naphthalene ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 2-Nitroanaline ND 20 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 3-Nitroanaline ND 20 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 4-Nitroanaline ND 20 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Nitrobenzene ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 2-Nitrophenol ND 20 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 4-Nitrophenol ND 20 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 N-Nitrosodimethylamine ND 20 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 N-Nitrosodiphenylamine ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 N-Nitrosodi-n-propylamine ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Pentachlorophenol ND 20 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Phenanthrene ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Phenol 10 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Pyrene ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 1,2,4-Trichlorobenzene ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 2,4,5-Trichlorophenol ND 20 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 2,4,6-Trichlorophenol ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Pyridin I ND 1 10 1 ug/L 1 1 3520 08/22/17:210031 8270C 09/07/17:213436 ND=Non-Detected.PQL=Practical Quantitation Limit.$Surrogate.*PQL adjusted for dilution. Page 12 of 44 =i AGRICULTURAL Analytical Chemists September 21, 2017 Lab ID : SP 1710078-004 Customer ID : 2-113 69 South Tahoe Public Utility District 1275 Meadow Crest Drive Sampled On : August 15, 2017-00:00 South Lake Tahoe, CA 96150 Sampled By : Ops Received On : August 17, 2017-11:45 Matrix : Waste Water Description : Final Effluent Project : Priority Pollutants Sample Result- Organic Constituent Result PQL Units Note Sample Preparation Sample Analysis Method Date/ID Method Date/ID EPA 8081 Tetrachloro-m-xylene$ 50.5 15-143 % 608/8081 08/21/17:209988 608/8081 08/26/17:212821 Aldrin ND 0.05 ug/L 608/8081 08/21/17:209988 608/8081 08/26/17:212821 Alpha BHC ND 0.05 ug/L 608/8081 08/21/17:209988 608/8081 08/26/17:213017 Beta BHC ND 0.05 ug/L 608/8081 08/21/17:209988 608/8081 08/26/17:212821 Delta BHC ND 0.05 ug/L 608/8081 08/21/17:209988 608/8081 08/26/17:212821 Gamma BHC(Lindane) ND 0.05 ug/L 608/8081 08/21/17:209988 608/8081 08/26/17:212821 Chlordane ND 0.1 ug/L 608/8081 08/21/17:209988 608/8081 08/26/17:212821 alpha-Chlordane ND 0.05 ug/L 608/8081 08/21/17:209988 608/8081 08/26/17:212821 gamma-Chlordane ND 0.05 ug/L 608/8081 08/21/17:209988 608/8081 08/26/17:212821 4,4-DDD ND 0.05 ug/L. 608/8081 08/21/17:209988 608/8081 08/26/17:212821 41)4-DDE ND 0.05 ug/L 608/8081 08/21/17:209988 608/8081 08/26/17:212821 494-DDT ND 0.05 ug/L 608/8081 08/21/17:209988 608/8081 08/26/17:212821 Dieldrin ND 0.05 ug/L 608/8081 08/21/17:209988 608/8081 08/26/17:212821 Endosulfan I ND 0.05 ug/L 608/8081 08/21/17:209988 608/8081 08/26/17:212821 Endosulfan II ND 0.05 ug/L 608/8081 08/21/17:209988 608/8081 08/26/17:212821 Endosulfan Sulfate ND 0.05 ug/L 608/8081 08/21/17:209988 608/8081 09/26/17:212821 Endrin ND 0.05 ug/L 608/8081 08/21/17:209988 608/8081 08/26/17:212821 Endrin Aldehyde ND 0.05 ug/L 608/8081 08/21/17:209988 608/8081 08/26/17:212821 Endrin Ketone ND 0.05 ug/L 608/8081 08/21/17:209988 608/8081 08/26/17:212821 Heptachlor ND 0.05 ug/L 608/8081 08/21/17:209988 608/8081 08/26/17:212821 Heptachlor Epoxide ND 0.05 ug/L 608/8081 08/21/17:209988 608/8081 08/26/17:212821 Methoxychlor ND 0.1 ug/L 608/8081 08/21/17:209988 608/8081 08/26/17:212821 Toxaphene I ND 1 0.5 1 ug/L 1 1 608/8081 08/21/17:209988 608/8081 08/26/17:212821 EPA 8082 Tetrachloro-m-xylene$ 15.6 26-102 % 8082A 08/22/17:210030 8082 08/25/17:212741 PCB 1016/1242 ND 0.5 ug/L 8082A 08/22/17:210030 8082 08/25/17:212741 PCB 1221 ND 0.5 ug/L 8082A 08/22/17:210030 8082 08/25/17:212741 PCB 1232 ND 0.5 ug/L 8082A 08/22/17:210030 8082 08/25/17:212741 PCB 1248 ND 0.5 ug/L 8082A 08/22/17:210030 8082 08/25/17:212741 PCB 1254 ND 0.5 ug/L 8082A 08/22/17:210030 8082 08/25/17:212741 PCB 1260 ND 0.5 ug/L 8082A 08/22/17:210030 8082 08/25/17:212741 PCB 1242 1 ND 1 0.5 1 ug/L I I 8082A 08/22/17:210030 8082 08/25/17:212741 EPA 8270 2-Fluorobiphenyl$ 52.7 26-97 % 3520 08/22/17:210031 8270C 09/07/17:213436 2-Flu0rophenol$ 34.4 0-114 % 3520 08/22/17:210031 8270C 09/07/17:213436 Page 13 of 44 Corporate Offices&Laboratory Office&Laboratory Office&Laboratory Office R Laboratory Office&Laboratory 853 Corporation Street 2500 Stagecoach Road 563 E.Lindo Avenue 3442 Empresa Drive,Suite D 9415 W.Goshen Avenue Santa Paula,CA 93060 Stockton,CA 95215 Chico,CA 95926 San Luis Obispo,CA 93401 Visalia,CA 93291 TEL:(805)392-2000 TEL:(209)942-0182 TEL:(530)343-5818 TEL:(805)783-2940 TEL:(559)734-9473 Env FAX:(805)525-4172/Ag FAX:(805)392-2063 FAX:(209)942-0423 FAX:(530)343-3807 FAX:(805)783-2912 FAX:(559)734-8435 CA ELAP Certification No.1573 CA ELAP Certification No.1563 CA ELAP Certification No.2670 CA ELAP Certification No.2775 CA ELAP Certification No.2810 September 21, 2017 Lab ID : SP 1710078-004 Description : Final Effluent Customer ID : 2-11369 Sample Result- Organic Constituent Result PQL Units Note Sample Preparation Sample Analysis Method Date/ID Method Date/ID EPA 8270 Nitrobenzene-d5,t 48.8 22-92 % 3520 08/22/17:210031 8270C 09/07/17:213436 Phenol-d6l 37.1 0-105 % 3520 08/22/17:210031 8270C 09/07/17:213436 p-Terphenyl-d14l 20.4 20-118 % 3520 08/22/17:210031 8270C 09/07/17:213436 2,4,6-Tribromophenol$ 59.6 0-133 % 3520 08/22/17:210031 8270C 09/07/17:213436 Acenaphthene ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Acenaphthylene ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Aniline ND 20 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Anthracene ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 1,2-Diphenylhydrazine ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Benzidine ND 20 ug/L 3520 68/22/17:210031 8270C 09/07/17:213436 Benzo(a)anthracene ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Benzo(b)fluoranthene ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Benzo(k)fluoranthene ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Benzo(g,h,i)perylene ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Benzo(a)pyrene ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Benzoic Acid ND 20 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Benzylalcohol ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 4-Bromophenylphenylether ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Butylbenzylphthalate ND 20 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 bls(2- ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Chloroethoxy)methane bis(2-Chloroethyl)ether ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 bis(2-Chloroisopropyl)ether ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 bis(2-Ethylhexyl)phthalate ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 4-Chloroaniline ND 20 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 4-Chloro-3-methylphenol ND 20 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 2-Chloronaphthalene ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 2-Chlorophenol ND 20 ug/L 3520 08/22117:210031 8270C 09/07/17:213436 4-Chlorophenylphenylether ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Chrysene ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Dibenzo(a,h)anthracene ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Dibenzofuran ND 20 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Di-n-butylphthalate ND 20 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 1,2-Dichlorobenzene ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 1,3-Dichlorobenzene ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 1,4-Dichlorobenzene ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 3,3'-Dichlorobenzidine ND 20 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 2,4-Dichlorophenol ND 20 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Diethylphthalate I ND 1 10 1 ug/L 1 1 3520 08/22/17:210031 8270C 09/07/17:213436 Page 14 of 44 September 21, 2017 Lab ID : SP 1710078-004 Description : Final Effluent Customer ID : 2-11369 Sample Result- Organic Constituent Result PQL Units Note Sample Preparation Sample Analysis Method Date/ID Method Date/ID EPA 8270 2,4-Dimethylphenol ND 20 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Dimethylphthalate ND 10 ug/L 3520 08/72/17:210031 8270C 09/07/17:213436 4,6-Dinitro-2-methylphenol ND 20 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 2,4-Dinitrophenol ND 50 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 2,4-Dinitrotoluene ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 2,6-Dinitrotoluene ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Di-n-octylphthalate ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Fluoranthene ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Fluorene ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 IHexachlorobenzene ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Hexachlorobutadiene ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Hexachlorocyclopentadiene ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Hexachloroethane ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Indeno(1,2,3-c,d)pyrene ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Isophorone ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 2-Methylnaphthalene ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 2-Methylphenol ND 20 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 3-and 4-Methylphenol ND 20 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Naphthalene ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 2-Nitroanaline ND 20 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 3-Nitroanaline ND 20 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 4-Nitroanaline ND 20 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Nitrobenzene ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 2-Nitrophenol ND 20 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 4-Nitrophenol ND 20 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 N-Nitrosodimethylamine ND 20 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 N-Nitrosodiphenylamine ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 N-Nitrosodi-n-propylamine ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Pentachlorophenol ND 20 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Phenanthrene ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Phenol ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Pyrene ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 1,2,4-Trichlorobenzene ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 2,4,5-Trichlorophenol ND 20 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 2,4,6-Trichlorophenol ND 10 ug/L 3520 08/22/17:210031 8270C 09/07/17:213436 Pyridine I ND 1 10 1 ug/L 1 1 3520 08/22/17:210031 8270C 09/07/17:213436 ND=Non-Detected.PQL=Practical Quantitation Limit.$Surrogate.*PQL adjusted for dilution. Page 15 of 44 c7�7L ENVIRONMENTAL AGRICULTURAL Analytical Chemists September 21, 2017 Lab ID : SP 1710078-005 Customer ID : 2-113 69 South Tahoe Public Utility District 1275 Meadow Crest Drive Sampled On : August 15, 2017-00:00 South Lake Tahoe, CA 96150 Sampled By : Ops Received On : August 17, 2017-11:45 Matrix : S ludge Description : Centrifuge Cake Project : Priority Pollutants Sample Result-Organic Constituent Result PQL Units Note Sample Preparation Sample Analysis Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzenet 94.9 48-110* % 5030B 08/18/17:210456 8260B 08/21/17:213073 Dibromofluoromethanet 94.4 48-132* % 5030B 08/18/17:210456 8260B 08/21/17:213073 1,2-Dichloroethane-d4* 114 48-123* % 503.0B 08/18/17:210456 8260B 08/21/17:213073 Toluene-d8t 97.5 49-124* % 5030B 08/18/17:210456 8260B 08/21/17:213073 Acetone 74700 10000* ug/kg 5030B 08/18/17:210456 8260B 08/29/17:213079 Acrolein ND 1500* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 Acrylonitrile ND 1500* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 Benzene ND 250* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 Bromobenzene ND 250* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 Bromochloromethane ND 250* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 Bromodichloromethane ND 250* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 Bromoform ND 250* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 Bromomethane ND 250* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 tert-Butanol ND 1200* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 2-Butanone(MEK) 53800 10000* ug/kg 50'30B 08/18/17:210456 8260B 08/29/17:213079 n-Butylbenzene ND 250* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 sec-Butylbenzene ND 250* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 tert-Butylbenzene ND 250* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 Carbon Disulfide ND 1200* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 Carbon Tetrachloride ND 250* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 Chlorobenzene ND 250* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 Chloroethane ND 250* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 Chloroform ND 250* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 Chloromethane ND 250* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 2-Chlorotoluene ND 250* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 4-Chlorotoluene ND 250* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 Dibromochloromethane ND 250* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 Dibromomethane ND 250* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 1,2-Dichlorobenzene ND 250* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 1,3-Dichlorobenzene ND 250* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 1,4-Dichlorobenzene ND 250* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 Dichlorodifluoromethane ND 250* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 1,1-Dichloroethane ND 250* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 1,2-Dichloroethane ND 250* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 1,1-Dichloro ethylene ND 250* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 Page 16 of 44 Corporate Offices&Laboratory Office&Laboratory Office&Laboratory Office&Laboratory Office&Laboratory 853 Corporation Street 2500 Stagecoach Road 563 E.Lindo Avenue 3442 Empresa Drive,Suite D 9415 W.Goshen Avenue Santa Paula,CA 93060 Stockton,CA 95215 Chico,CA 95926 San Luis Obispo,CA 93401 Visalia,CA 93291 TEL:(805)392-2000 TEL:(209)942-0182 TEL:(530)343-5818 TEL:(805)783-2940 TEL:(559)734-9473 Env FAX:(805)525-4172/Ag FAX:(805)392-2063 FAX:(209)942-0423 FAX:(530)343-3807 FAX:(805)783-2912 FAX:(559)734-8435 CA ELAP Certification No.1573 CA ELAP Certification No.1563 CA ELAP Certification No.2670 CA ELAP Certification No.2775 CA ELAP Certification No.2810 September 21, 2017 Lab ID : SP 1710078-005 Description : Centrifuge Cake Customer ID : 2-11369 Sample Result- Organic Constituent Result PQL Units Note Sample Preparation Sample Analysis Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 250* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 trans-l,2-Dichloroethylene ND 250* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 1,2-Dichloropropane ND 250* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 1,3-Dichloropropane ND 250* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 2,2-Dichloropropane ND 250* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 151-Dichloropropene ND 250* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 cis-1,3-Dichloropropene ND 250* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 trans-l,3-Dichloropropene ND 250* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 Di-isopropyl ether(DIPE) ND 250* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 Ethyl Benzene ND 250* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 Ethyl tert-butyl ether (ETBE) ND 250* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 Hexachlorobutadiene ND 250* ug/kg .5030B 08/18/17:210456 8260B 08/21/17:213073 2-Hexanone ND 1200* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 Isopropylbenzene ND 250* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 p-Isopropyltoluene ND 250* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 Methyl tert-butyl ether (MTBE) ND 250* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 4-Methyl-2-pentanone ND 1200* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 (MIBK) Methylene Chloride ND 250* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 Naphthalene ND 250* ug/kg 5030B 08/18/17:210456 .8260B 08/21/17:213073 n-Propylbenzene ND 250* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 Styrene ND 250* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 tert-Amyl methyl ether (TAME) ND 250* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 19 1,1,2-Tetrachloroethane ND 250* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 1,1,2,2-Tetrachloroethane ND 250* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 Tetrachloroethylene ND 250* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 Toluene ND 250* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 1,2,3-Trichlorobenzene ND 250* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 1,2,4-Trichlorobenzene ND 250* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 19151-Trichloroethane ND 250* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 1,1,2-Trichloroethane ND 250* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 Trichloroethylene ND 250* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 Trichlorofluoromethane ND 250* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 1,2,4-Trimethylbenzene ND 250* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 1,3,5-Trimethylbenzene ND 250* ug/kg 5030B 08118/17:210456 8260B 08/21/17:213073 Vinyl Acetate ND 1200* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 Vinyl Chloride ND 250* ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 Xylenes ND -- ug/kg 5030B 08/18/17:210456 8260B 08/21/17:213073 Xylenes m,p ND 1 250* 1 ug/kg I I 5030B 08/18/17:210456 8260B 08/21/17:213073 Page 17 of 44 September 21, 2017 Lab ID : SP 1710078-005 Description : Centrifuge Cake Customer ID : 2-11369 Sample Result- Organic Constituent Result PQL Units Note Sample Preparation Sample Analysis Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 250* ug/kg 5030E 08/18/17:210456 8260a 08/21/17;213073 EPA 8270 2-Fluorobiphenyll 65.0 0-106* % 8270C 08/22/17:210027 8270C 09/08/17:213547 2-Fluorophenoll 62.6 0-115* % 8270C 08/22/17:210027 8270C 09/08/17:213547 Nitrobenzene-d5l 75.5 0-151* % 8270C 08/22/17:210027 8270C 09/08/17:213547 Phenol-d6l 72.7 0-124* % 8270C 08/22/17:210027 8270C 09/08/17:213547 p-Terphenyl-d141 58.4 0-101* % 8270C 08/22/17:210027 8270C 09/08/17:213547 2,4,6-Tribromophenol$ 65.3 0-129* % 8270C 08/22/17:210027 8270C 09/08/17:213547 Acenaphthene ND 0.2* mg/kg 8270C 08/22/17:210027 8270C 09/08/17:213547 Acenaphthylene ND 0.2* mg/kg 8270C 08/22/17:210027 8270C 09/08/17:213547 Aniline ND 0.2* mg/kg 8270C 08/22/17:210027 8270C 09/08/17:213547 Anthracene ND 0.2* mg/kg 8270C 08/22/17:210027 8270C 09/08/17:213547 1,2-Diphenylhydrazine ND 0.2* mg/kg 8270C 08/22/17:210027 8270C 09/08/17:213547 Benzidine ND 0.2* mg/kg 8270C 08/22/17:210027 8270C 09/08/17:213547 Benzo(a)anthracene ND 0.2* mg/kg 8270C 08/22/17:210027 8270C 09/08/17:213547 Benzo(b)fluoranthene ND 0.2* mg/kg 8270C 08/22/17:210027 8270C 09/08/17:213547 Benzo(k)fluoranthene ND 0.2* mg/kg 8270C 08/22/17:210027 8270C 09/08/17:213547 Benzo(g,h,i)perylene ND 0.2* mg/kg 8270C 08/22/17:210027 8270C 09/08/17:213547 Benzo(a)pyrene ND 0.2* mg/kg 8270C 08/22/17:210027 8270C 09/08/17:213547 Benzoic Acid ND 0.2* mg/kg 8270C 08/22/17:210027 8270C 09/08/17:213547 Benzylalcohol ND 0.2* mg/kg 8270C 08/22/17:210027 8270C 09/08/17:213547 4-Bromophenylphenylether ND 0.2* mg/kg 8270C 08/22/17:210027 8270C 09/08/17:213547 Butylbenzylphthalate ND 0.2* mg/kg 8270C 08/22/17:210027 8270C 09/08/17:213547 (2-bis bis(2- ethOXy)methane ND 0.2* mg/kg 8270C 08/22/17:210027 8270C 09/08/17:213547 Chlorbis(2-Chloroethyl)ether ND 0.2* mg/kg 8270C 08/22/17:210027 8270C 09/08/17:213547 bis(2-Chloroisopropyl)ether ND 0.2* mg/kg 8270C 08/22/17:210027 8270C 09/08/17:213547 bis(2-Ethylhexyl)phthalate 2.9 0.2* mg/kg 8270C 08/22/17:210027 8270C 09/08/17:213547 4-Chloroaniline ND 0.2* mg/kg 8270C 08/22/17:210027 8270C 09/08/17:213547 4-Chloro-3-methylphenol ND 0.2* mg/kg 8270C 08/22/17:210027 8270C 09/08/17:213547 2-Chloronaphthalene ND 0.2* mg/kg 8270C 08/22/17:210027 8270C 09/08/17:213547 2-Chlorophenol ND 0.2* mg/kg 8270C 08/22/17:210027 8270C 09/08/17:213547 4-Chlorophenylphenylether ND 0.2* mg/kg 8270C 08/22/17:210027 8270C 09/08/17:213547 Chrysene ND 0.2* mg/kg 8270C 08/22/17:210027 8270C 09/08/17:213547 Dibenzo(a,h)anthracene ND 0.2* mg/kg 8270C 08/22/17:210027 8270C 09/08/17:213547 Dibenzofuran ND 0.2* mg/kg 8270C 08/22/17:210027 8270C 09/08/17:213547 Di-n-butylphthalate ND 0.2* mg/kg 8270C 08/22/17:210027 8270C 09/08/17:213547 11,2-Dichlorobenzene ND 0.2* mg/kg 8270C 08/22/17:210027 8270C 09/08/17:213547 113-Dichlorobenzene ND 0.2* mg/kg 8270C 08/22/17:210027 8270C 09/08/17:213547 Page 18 of 44 September 21, 2017 Lab ID : SP 1710078-005 Description : Centrifuge Cake Customer ID : 2-11369 Sample Result- Organic Constituent Result PQL Units Note Sample Preparation Sample Analysis Method Date/ID Method Date/ID EPA 8270 1,4-Dichlorobenzene ND 0.2* mg/kg 8270c 08/22/17:210027 8270c 09/08/17:213547 3,3'-Dichlorobenzidine ND 0.2* mg/kg 8270c 08/22/17:210027 8270c 09/08/17:213547 2,4-Dichlorophenol ND 0.2* mg/kg 8270c 08/22/17:210027 8270c 09/08/17:213547 Diethylphthalate ND 0.2* mg/kg 8270c 08/22/17:210027 8270c 09/08/17:213547 2,4-Dimethylphenol ND 0.2* mg/kg 8270c 08/22/17:210027 8270c 09/08/17:213547 Dimethylphthalate ND 0.2* mg/kg 8270c 08/22/17:210027 8270c 09/08/17:213547 4,6-Dinitro-2-methylphenol ND 0.2* mg/kg 8270c 08/22/17:210027 8270c 09/08/17:213547 2,4-Dinitrophenol ND 0.2* mg/kg 8270c 08/22/17:210027 8270c 09/08/17:213547 2,4-Dinitrotoluene ND 0.2* mg/kg 8270c 08/22/17:210027 8270c 09/08/17:213547 2,6-Dinitrotoluene ND 0.2* mg/kg 8270c 08/22/17:210027 8270c 09/08/17:213547 Di-n-octylphthalate ND 0.2* mg/kg 8270c 08/22/17:210027 8270c 09/08/17:213547 Fluoranthene ND 0.2* mg/kg 8270c 08/22/17:210027 8270c 09/08/17:213547 Fluorene ND 0.2* mg/kg 8270c 08/22/17:210027 8270c 09/08/17:213547 Hexachlorobenzene ND 0.2* mg/kg 8270c 08/22/17:210027 8270c 09/08/17:213547 Hexachlorobutadiene ND 0.2* mg/kg 8270c 08/22/17:210027 8270c 09/08/17:213547 Hexachlorocyclopentadiene ND 0.2* mg/kg 8270c 08/22/17:210027 8270c 09/08/17:213547 Hexachloroethane ND 0.2* mg/kg 8270c 08/22/17:210027 8270c 09/08/17:213547 Indeno(1,2,3-c,d)pyrene ND 0.2* mg/kg 8270c 08/22/17:210027 8270c 09/08/17:213547 Isophorone ND 0.2* mg/kg 8270c 08/22/17:210027 8270c 09/08/17:213547 2-Methylnaphthalene ND 0.2* mg/kg 8270c 08/22/17:210027 8270c 09/08/17:213547 2-Methylphenol ND 0.2* mg/kg 8270c 08/22/17:210027 8270c 09/08/17:213547 3-and 4-Methylphenol 14.2 0.2* mg/kg 8270c 08/22/17:210027 8270c 09/08/17:213547 Naphthalene ND 0.2* mg/kg 8270c 08/22/17:210027 8270c 09/08/17:213547 2-Nitroanaline ND 0.2* mg/kg 8270c 08/22/17:210027 8270c 09/08/17:213547 3-Nitroanaline ND 0.2* mg/kg 8270c 08/22/17:210027 8270c 09/08/17:213547 4-Nitroanaline ND 0.2* mg/kg 8270c 08/22/17:210027 8270c 09/08/17:213547 Nitrobenzene ND 0.2* mg/kg 8270c 08/22/17:210027 8270c 09/08/17:213547 2-Nitrophenol ND 0.2* mg/kg 8270c 08/22/17:210027 8270c 09/08/17:213547 4-Nitrophenol ND 0.2* mg/kg 8270c 08/22/17:210027 8270c 09/08/17:213547 N-Nitrosodimethylamine ND 0.2* mg/kg 8270c 08/22/17:210027 8270c 09/08/17:213547 N-Nitrosodiphenylamine ND 0.2* mg/kg 8270c 08/22/17:210027 8270c 09/08/17:213547 N-Nitrosodi-n-propylamine ND 0.2* mg/kg 8270c 08/22/17:210027 8270c 09/08/17:213547 Pentachlorophenol ND 0.2* mg/kg 8270c 08/22/17:210027 8270c 09/08/17:213547 Phenanthrene ND 0.2* mg/kg 8270c 08/22/17:210027 8270c 09/08/17:213547 Phenol ND 0.2* mg/kg 8270c 08/22/17:210027 8270c 09/08/17:213547 Pyrene ND 0.2* mg/kg 8270c 08/22/17:210027 8270c 09/08/17:213547 1,2,4-Trichlorobenzene ND 0.2* mg/kg 8270c 08/22/17:210027 8270c 09/08/17:213547 2,4,5-Trichlorophenol I ND 1 0.2* 1 mg/kg I I 8270c 08/22/17:210027 8270c 09/08/17:213547 Page 19 of 44 September 21, 2017 Lab ID : SP 1710078-005 Description : Centrifuge Cake Customer ID : 2-11369 Sample Result- Organic Constituent Result PQL Units Note Sample Preparation Sample Analysis Method Date/ID Method Date/ID EPA 8270 2,4,6-Trichlorophenol ND 0.2* mg/kg 8270C 08/22/17:210027 8270C 09/08/17:213547 Pyridine ND 0.2* mg/kg 8270C 08/22/17:210027 8270C 09/08/17:213547 2,3,4,6-Tetrachlorophenol ND 0.2* mg/kg I 8270C 08/22/17:210027 8270C 09/08/17:213547 ND=Non-Detected.PQL=Practical Quantitation Limit.++Surrogate.*PQL adjusted for dilution. Page 20 of 44 ENVIRONMENTAL� AGRICULTURAL Analytical September 21, 2017 Lab ID : SP 1710078 South Tahoe Public Utility District Customer : 2-11369 Quality Control-Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,2,4-Trichlorobenzene 3520 08/22/17:210031caa Blank ug/L. ND <10 LCS ug/L 50.00 80.7% 3-97 BS ug/L 50.00 85.2% 2-121 BSD ug/L 50.00 75.8% 2-121 BSRPD ug/L 200.0 4.7 <10 1,2-Dichlorobenzene 3520 08/22/17:210031caa Blank ug/L ND <10 1,2-Diphenylhydrazine 3520 08/22/17:210031caa Blank ug/L ND <10 1,3-Dichlorobenzene 3520 08/22/17:210031caa Blank ug/L ND <10 1,4-Dichlorobenzene 3520 08/22/17:210031caa Blank ug/L ND <10 LCS ug/L 50.00 72.8% 5-96 BS ug/L 50.00 77.0% 1-112 BSD ug/L 50.00 68.1% 1-112 BSRPD ug/L 200.0 4.4 <10 ,4,5-Trichlorophenol 3520 08/22/17:210031caa Blank ug/L ND <20 ,4,6-Tribromophenol 3520 08/22/17:210031caa Blank ug/L 200.0 79.8% 0-133 LCS ug/L 200.0 89.7% 0-133 BS ug/L 200.0 88.8% N/A 'BSD ug/L 200.0 83.7% N/A BSRPD ug/L 200.0 5.9% <19 ,4,6-Trichlorophenol 3520 08/22/17:210031caa Blank ug/L ND <10 ,4-Dichlorophenol 3520 08/22/17:210031caa Blank ug/L ND <20 ,4-Dimethylphenol 3520 08/22/17:210031caa Blank ug/L ND <20 ,4-Dinitrophenol 3520 08/22/17:210031caa Blank ug/L ND <50 ,4-Dinitrotoluene 3520 08/22/17:210031caa Blank ug/L ND <10 LCS ug/L 50.00 91.8% 7-118 BS ug/L 50.00 89.2% 26-107 BSD ug/L 50.00 84.4% 26-107 BSRPD u L 200.0 2.4 <10 ,6-Dinitrotoluene 3520 08/22/17:210031caa Blank u /L ND <10 -Chlorophenol 3 520 08/22/17:210031caa Blank ug/L ND <20 LCS ug/L 100.0 78.6% 0-108 BS ug/L 100.0 80.5% 10-110 BSD ug/L 100.0 74.4% 10-110 BSRPD ug/L 200.0 6.1 <20 -Fluorobiphenyl 3520 08/22/17:210031caa Blank ug/L 100.0 70.5% 26-97 LCS ug/L 100.0 79.5% 26-97 BS ug/L 100.0 78.7% 30-115 BSD ug/L 100.0 72.6% 30-115 BSRPD ug/L 200.0 8.0% <35 -Florophenol 3520 08/22/17:210031caa Blank ug/L 200.0 66.6% 0-114 LCS ug/L 200.0 71.4% 0-114 BS ug/L 200.0 74.2% N/A BSD ug/L 200.0 68.6% N/A BSRPD ug/L 200.0 7.8% <41 -Methylnaphthalene 3520 08/22/17:210031caa Blank ug/L ND <10 -Methylphenol 3520 08/22/17:210031caa Blank ug/L ND <20 -Nitroaniline 3520 08/22/17:210031caa Blank ug/L ND <20 -Nitrophenol 3520 08/22/17:210031caa Blank ug/L ND <20 3,3-Dichlorobenzidine 3520 08/22/17:210031caa Blank ug/L ND <20 3-Nitroaniline 3520 08/22/17:210031caa Blank ug/L ND <20 ,6-Dinitro-2-methylphenol 3520 08/22/17:210031caa Blank ug/L ND <20 -Bromophenylphenylether 3520 08/22/17:210031caa Blank ug/L ND <10 -Chloro-3-methylphenol 3520 08/22/17:210031caa Blank ug/L ND <20 LCS ug/L 100.0 85.7% 5-108 BS ug/L 100.0 85.2% 19-103 Page 21 of 44 Corporate Offices&Laboratory Office&Laboratory Office&Laboratory Office&Laboratory Office&Laboratory 853 Corporation Street 2500 Stagecoach Road 563 E.Lindo Avenue 3442 Empresa Drive,Suite D 9415 W.Goshen Avenue Santa Paula,CA 93060 Stockton,CA 95215 Chico,CA 95926 San Luis Obispo,CA 93401 Visalia,CA 93291 TEL:(805)392-2000 , TEL:(209)942-0182 TEL:(530)343-5818 TEL:(805)783-2940 TEL:(559)734-9473 Env FAX:(805)525-4172/Ag FAX:(805)392-2063 FAX:(209)942-0423 FAX:(530)343-3807 FAX:(805)783-2912 FAX:(559)734-8435 CA ELAP Certification No.1573 CA ELAP Certification No.1563 CA ELAP Certification No.2670 CA ELAP Certification No.2775 CA ELAP Certification No.2810 September 21,2017 Lab ID : SP 1710078 South Tahoe Public Utility District Customer : 2-11369 Quality Control- Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic -Chloro-3-methylphenol 3520 08/22/17:210031caa BSD ug/L 100.0 78.6% 19-103 BSRPD u L 200.0 6.6 <20 -Chloroaniline 3520 08/22/17:210031caa Blank ug/L ND <20 Methylphenol 3520 08/22/17:210031caa Blank ug/L ND <20 -Nitroaniline 3520 08/22/17:210031caa Blank ug/L ND <20 -Nitrophenol 3520 08/22/17:210031caa Blank ug/L ND <20 LCS ug/L 100.0 82.6% 0-133 BS ug/L 100.0 78.2% 0-119 BSD ug/L 100.0 73.1% 0-119 BSRPD ug/L 200.0 5.0 <20 cenaphthene 3520 08/22/17:210031caa Blank ug/L ND <10 LCS ug/L 50.00 86.4% 0-115 BS ug/L 50.00. 86.9% 15-115 BSD ug/L 50.00 79.8% 15-115 BSRPD ug/L 200.0 3.5 <10 cenaphthylene 3520 08/22/17:210031caa Blank ug/L ND <10 Aniline 3520 08/22/17:210031caa Blank ug/L ND <20 thracene 3520 08/22/17:210031caa Blank u L, ND <10 enzidine 3520 08/22/17:210031caa Blank ug/L 7.5 20 enzo(a)anthracene 3520 08/22/17:210031caa Blank ug/L ND <10 Benzo(a)pyrene 3520 08/22/17:21003lcaa Blank ug/L ND <10 Benzo(b)fluoranthene 3520 08/22/17:210031caa Blank ug/L ND <10 Benzo(g,h,i)perylene 3520 08/22/17:210031caa Blank ug/L ND <10 Benzo(k)fluoranthene 3520 08/22/17:210031caa Blank u L ND <10 Benzoic Acid 3520 08/22/17:210031caa Blank ug/L ND <20 enzylalcohol 3520 08/22/17:210031caa Blank ug/L ND <10 is(2-Chloroethoxy)methane 3520 08/22/17:210031caa Blank ug/L, ND <10 is(2-Chloroethyl)ether 3520 08/22/17:210031caa Blank ug/L ND <10 is(2-Chloroiso ropyl)ether 3520 08/22/17:210031caa Blank ug/L ND <10 is(2-Ethylhexyl)phthalate 3520 08/22/17:210031caa Blank ug/L 2.1 10 utylbenzylphthalate 3520 08/22/17:210031caa Blank ug/L ND <20 Chloronaphthalene 3520 08/22/17:210031caa Blank ug/L ND <10 Chlorophen 1phen Tether 3520 08/22/17:210031caa Blank . ug/L ND <10 Chrysene 3520 08/22/17:216031caa Blank ug/L ND <10 ibenzo(a,h)anthracene 3520 08/22/17:210031caa Blank ug/L ND <10 ibenzofuran 3520 08/22/17:210031caa Blank ug/L ND <20 iethylphthalate 3520 08/22/17:210031caa Blank ug/L ND <10 Dimeth 1phthalate 3520 08/22/17:210031caa Blank ug/L ND <10 i-n-butylphthalate 3520 08/22/17:210031caa Blank ug/L ND <20 Di-n-octylphthalate 3520 08/22/17:210031caa Blank ug/L ND <10 luoranthene 3520 08/22/17:210031caa Blank ug/L ND <10 luorene 3520 08/22/17:210031caa Blank ug/L ND <10 exachlorobenzene 3520 08/22/17:210031caa Blank ug/L ND <10 exachlorobutadiene 3520 08/22/17:210031caa Blank ug/L ND <10 exachlorocyclopentadiene 3520 08/22/17:210031caa Blank ug/L ND <10 Hexachloroethane 3520 08/22/17:210031caa Blank ug/L ND <10 Indeno(1,2,3-c,d)pyrene 3520 08/22/17:210031caa Blank ug/L ND <10 Isophorone 3520 08/22/17:210031caa Blank ug/L ND <10 Naphthalene 3520 08/22/17:210031caa Blank ug/L ND <10 Nitrobenzene 3520 08/22/17:210031caa Blank ug/L ND <10 itrobenzene-d5 3520 08/22/17:210031caa Blank ug/L 100.0 77.1% 22-92 LCS ug/L 100.0 78.9% 22-92 BS ug/L 100.0 80.5% N/A BSD ug/L 100.0 74.9% N/A Page 22 of 44 September 21, 2017 Lab ID : SP 1710078 South Tahoe Public Utility District Customer : 2-11369 Quality Control-Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Nitrobenzene-d5 3520 08/22/17:210031caa BSRPD ug/L 200.0 7.2% :535 -Nitrosodimethylamine 3520 08/22/17:210031caa Blank ug/L ND <20 -Nitrosodi-N-propylamine 3520 08/22/17:210031caa Blank ug/L ND <10 LCS ug/L 50.00 74.6% 0-136 BS ug/L 50.00 74.8% 0-142 BSD ug/L 50.00 69.7% 0-142 BSRPD ug/L 200.0 2.5 <10 -Nitrosodiphenylamine 3520 08/22/17:210031caa Blank ug/L ND <10 Pentachlorophenol 3520 08/22/17:210031caa Blank ug/L ND <20 LCS ug/L 100.0 87.2% 6-119 BS ug/L 100.0 86.9% 24-102 BSD ug/L 100.0 82.4% 24-102 BSRPD ug/L 200.0 4.6 <20 henanthrene 3520 08/22/17:210031caa Blank ug/L ND <10 Phenol 3520 08/22/17:210031caa Blank ug/L ND <10 LCS ug/L 100.0 74.3% 0-106 BS ug/L 100.0 76.2% 0-127 BSD ug/L 100.0 69.3% 0-127 BSRPD ug/L 200.0 9.5% 589 Phenol-d6 3520 08/22/17:210031caa Blank ug/L 200.0 67.0% 0-105 LCS ug/L 200.0 74.1% 0-105 BS ug/L 200.0 76.0% N/A BSD ug/L 200.0 70.0% N/A BSRPD ug/L 200.0 8.2% <51 -Terphenyl-d14 3520 08/22/17:210031caa Blank ug/L 100.0 77.5% 20-118 LCS ug/L 100.0 89.0% 20-118 BS ug/L 100.0 86.6% N/A BSD ug/L 100.0 81.7% N/A BSRPD ug/L 200.0 5.9% <42 yrene 3520 08/22/17:210031caa Blank ug/L ND <10 LCS ug/L 50.00 86.2% 0-151 BS ug/L 50.00 84.0% 45-106 BSD ug/L 50.00 79.5% 45-106 BSRPD ug/L 200.0 2.3 <10 Pyridine 3520 08/22/17:210031caa Blank ug/L ND <10 1,1,1,2-Tetrachloroethane 5030B 08/18/17:210454VRG Blank ug/L ND <0.5 5030B 08/18/17:210456VRG Blank ug/kg ND <250 5030B 08/21/17:210459VRG Blank ug/L ND <0.5 ExBlk ug/L 0.000 12.5 1,1,1-Trichloroethane(TCA) 5030B 08/18/17:210454VRG Blank ug/L ND <0.5 5030B 08/18/17:210456VRG Blank ug/kg ND <250 5030B 08/21/17:210459VRG Blank ug/L ND <0.5 ExBlk ug/L 0.000 12.5 1,1,2,2-Tetrachloroethane 5030B 08/18/17:210454VRG Blank ug/L ND <0.5 5030B 08/18/17:210456VRG Blank ug/kg ND <250 5030B 08/21/17:210459VRG Blank ug/L ND <0.5 ExBlk ug/L 0.000 12.5 1,1,2-Trichloroethane 5030B 08/18/17:210454VRG Blank ug/L ND <0.5 5030B 08/18/17:210456VRG Blank ug/kg ND <250 5030B 08/21/17:210459VRG Blank ug/L ND <0.5 ExBlk ug/L 0.000 12.5 1,1-Dichloroethane 5030B 08/18/17:210454VRG Blank ug/L ND <0.5 5030B 08/18/17:210456VRG Blank ug/kg ND 4250 5030B 08/21/17:210459VRG Blank ug/L ND <0.5 Page 23 of 44 September 21, 2017 Lab ID : SP 1710078 South Tahoe Public Utility District Customer : 2-11369 Quality Control- Organic Constituent Method Date/ID Type Units Cone. QC Data DQO Note Organic 1,1-Dichloroethane 5030B 08/21/17:210459VRG ExBlk ug/L 0.000 12.5 1,1-Dichloroethylene 5030B 08/18/17:210454VRG Blank ug/L ND <0.5 LCS ug/L 25.00 52.5% 52-137 MS ug/L 25.00 79.5% 25-179 (SP 1710078-002) MSD ug/L 25.00 20.6% 25-179 435 MSRPD ug/L 25.00 118% <26 435 5030B 08/18/17:210456VRG Blank ug/kg ND <250 LCS ug/kg 1250 65.1% 0-135 MS ug/kg 1209 73.2% 0-251 (STK1750351-001) MSD ug/kg 1229 65.8% 0-251 MSRPD ug/kg 0.000 9.0% <38.1 5030B 08/21/17:210459VRG Blank ug/L ND <0.5 LCS ug/L 25.00 56.6% 52-137 MS ug/L 25.00 79.9% 25-179 (SP 1710078-001) MSD ug/L 25.00 76.5% 25-179 MSRPD ug/L 25.00 4.4% <26 ExBlk ug/L 0.000 12.5 1,1-Dichloropropene 5030B 08/18/17:210454VRG Blank ug/L ND <0.5 5030B 08/18/17:210456VRG Blank ug/kg ND <250 5030B 08/21/17:210459VRG Blank ug/L ND <0.5 ExBlk ug/L 0.000 12.5 1,2,3-Trichlorobenzene 5030B 08/18/17:210454VRG Blank ug/L ND <0.5 5030B 08/18/17:210456VRG Blank ug/kg ND <250 5030B 08/21/17:210459VRG Blank ug/L ND <0.5 ExBlk u L 0.000 12.5 1,2,4-Trichlorobenzene 5030B 08/18/17:210454VRG Blank ug/L ND <0.5 5030B 08/18/17:210456VRG Blank ug/kg ND <250 5030B 08/21/17:210459VRG Blank ug/L ND <0.5 ExBlk ug/L 0.000 12.5 1,2,4-Trimethylbenzene 5030B 08/18/17:210454VRG Blank ug/L ND <0.5 5030B 08/18/17:210456VRG Blank ug/kg ND <250 5030B 08/21/17:210459VRG Blank ug/L ND <0.5 ExBlk ug/L 0.000 12.5 1,2-Dichlorobenzene 5030B 08/18/17:210454VRG Blank ug/L ND <0.5 5030B 08/18/17:210456VRG Blank ug/kg ND <250 5030B 08/21/17:210459VRG Blank ug/L ND <0.5 ExBlk ug/L 0.000 12.5 1,2-Dichloroethane(EDC) 5030B 08/18/17:210454VRG Blank ug/L ND <0.5 5030B 08/18/17:210456VRG Blank ug/kg ND <250 5030B 08/21/17:210459VRG Blank ug/L ND <0.5 ExBlk ug/L 0.000 12.5 1,2-Dichloroethane-d4 5030B 08/18/17:210454VRG Blank ug/L 25.00 112% 58-166 LCS ug/L 25.00 115% 58-166 MS ug/L 25.00 115% 58-166 (SP 1710078-002) MSD ug/L 25.00 115% 58-166 MSRPD ug/L 25.00 0.3% 520.0 5030B 08/18/17:210456VRG Blank ug/kg 1250 119% 48-123 LCS ug/kg 1250 125% 48-123 330 MS ug/kg 1209 129% 48-123 435 (STK1750351-001) MSD ug/kg 1229 130% 48-123 435 MSRPD ug/kg 0.000 2.1% <20.0 5030B 08/21/17:210459VRG Blank ug/L 25.00 111% 58-166 LCS ug/L 25.00 114% 58-166 MS u L 25.00- 109% 58-166 Page 24 of 44 September 21, 2017 Lab ID : SP 1710078 South Tahoe Public Utility District Customer : 2-11369 Quality Control- Organic Constituent Method Date/ID Type Units Cone. QC Data DQO Note Organic 1,2-131chlorocthanc-d4 5030B (SP 1 7 1 0078-00 1) MSD ug/L 25.00 113% 58-166 MSRPD ug/L 25.00 3.1% <20.0 ExBlk ug/L 0.0% N/A 1,2-Dichloropropanc 5030B 08/18/17:210454VRG Blank ug/L ND <0.5 5030B 08/18/17:210456VRG Blank ug/kg ND <250 5030B 08/21/17:210459VRG Blank ug/L ND <0.5 ExBlk ug/L 0.000 12.5 1,3,5-Trim ethyl benzene 5030B 08/18/17:210454VRG Blank ug/L ND <0.5 5030B 08/18/17:210456VRG Blank Llg/kg ND <250 5030B 08/21/17:210459VRG Blank ug/L ND <0.5 ExBlk ug/L 0.000 12.5 1,3-Dichlorobcnzcnc 5030B 08/18/17:210454VRG Blank ug/L ND <0.5 5030B 08/18/17:210456VRG Blank ug/kg ND <250 5030B 08/21/17:210459VRG Blank ug/L ND <0.5 ExBlk ug/L 0.000 12.5 1,3-Dichloropropanc 5030B 08/18/17:210454VRG Blank ug/L ND <0.5 5030B 08/18/17:210456VRG Blank ug/kg ND <250 5030B 08/21/17:210459VRG Blank ug/L ND <0.5 ExBlk ug/L 0.000 12.5 1,4-Dichlorobcnzcnc 5030B 08/18/17:210454VRG Blank ug/L ND <0.5 5030B 08/18/17:210456VRG Blank ug/kg ND <250 5030B 08/21/17:210459VRG Blank ug/L ND <0.5 ExBlk ug/L 0.000 12.5 ,2-Dichloropropanc 5030B 08/18/17:210454VRG Blank ug/L ND <0.5 5030B 08/18/17:210456VRG Blank ug/kg ND <250 5030B 08/21/17:210459VRG Blank ug/L ND <0.5 ExBlk ug/L 0.000 12.5 -Butanone(MEK) 5030B 08/18/17:210454VRG Blank ug/L ND <10 5030B 08/18/17:210456VRG Blank ug/kg ND <1250 5030B 08/21/17:210459VRG Blank ug/L ND <10 ExBlk ug/L 0.0 250 -Chlorotoluene 5030B 08/18/I7:210454VRG Blank ug/L ND <0.5 5030B 08/18/17:210456VRG Blank ug/kg ND <250 5030B 08/21/17:210459VRG Blank ug/L ND <0.5 ExBlk ug/L 0.000 12.5 -Hexanone 5030B 08/18/17:210454VRG Blank ug/L ND <10 5030B 08/18/17:210456VRG Blank ug/kg ND <1250 5030B 08/21/17:210459VRG Blank ug/L ND <10 ExBlk ug/L 0.0 250 -Bromofluorobenzene 5030B 08/18/17:210454VRG Blank ug/L 25.00 98.9% 79-119 LCS ug/L 25.00 97.0% 79-119 MS ug/L 25.00 96.8% 79-119 (SP 1710078-002) MSD ug/L 25.00 96.2% 79-119 MSRPD ug/L 25.00 0.6% <20.0 5030B 08/18/17:210456VRG Blank ug/kg 1250 90.7% 48-110 LCS ug/kg 1250 88.9% 48-110 MS ug/kg 1209 96.0% 48-110 (STK1750351-001) MSD ug/kg 1229 96.8% 48-110 MSRPD ug/kg 0.000 2.4% <20.0 5030B 08/21/17:210459VRG Blank ug/L 25.00 97.3% 79-119 LCS ug/L 25.00 97.4% 79-1 19 MS ug/L 25.00 98.5% 79-119 (SP 1710078-001) MSD ug/L 25.00 100% 79-1 19 MSRPD ug/L 1 25.00 1.9% <20.0 Page 25 of 44 September 21, 2017 Lab ID : SP 1710078 South Tahoe Public Utility District Customer : 2-11369 Quality Control-Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic -Bromofluorobenzene 5030B 08/21/17:210459VRG ExBlk ug/L 0.0% N/A -Chlorotoluene 5030B 08/18/17:210454VRG Blank ug/L ND <0.5 5030B 08/18/17:210456VRG Blank ug/kg ND <250 5030B 08/21/17:210459VRG Blank ug/L ND <0.5 ExBlk ug/L 0.000 12.5 -Methyl-2-pentanone(MIBK) 5030B 08/18/17:210454VRG Blank ug/L ND <10 5030B 08/18/17:210456VRG Blank ug/kg ND <1250 5030B 08/21/17:210459VRG Blank ug/L ND <10 ExBlk ug/L 0.0 250 Acetone 5030B 08/18/17:210454VRG Blank ug/L ND <50 5030B 08/18/17:210456VRG Blank ug/kg ND <1250 5030B 08/21/17:210459VRG Blank ug/L ND <50 ExBlk ug/L 0.0 1250 crolein 5030B 08/18/17:210454VRG Blank ug/L ND <50 5030B 08/18/17:210456VRG Blank ug/kg ND <1500 5030B 08/21/17:210459VRG Blank ug/L ND <50 ExBlk ug/L 0.0 1250 crylonitrile 5030B 08/18/17:210454VRG Blank ug/L ND <50 5030B 08/18/17:210456VRG Blank ug/kg ND <1500 5030B 08/21/17:210459VRG Blank ug/L ND <50 ExBlk ug/L 0.0 1250 Benzene 5030B 08/18/17:210454VRG Blank ug/L ND <0.5 LCS ug/L 25.00 80.6% 60-134 MS ug/L 25.00 119% 47-169 (SP 1710078-002) MSD ug/L 25.00 115% 47-169 MSRPD ug/L 25.00 4.1% <24 5030B 08/18/17:210456VRG Blank ug/kg ND <250 LCS ug/kg 1250 116% 77-164 MS ug/kg 1209 121% 21-162 (STK1750351-001) MSD ug/kg 1229 119% 21-162 MSRPD ug/kg 0.000 0.2% <37.9 5030B 08/21/17:210459VRG Blank ug/L ND <0.5 LCS ug/L 25.00 83.5% 60-134 MS ug/L 25.00 113% 47-169 (SP 1710078-001) MSD ug/L 25.00 111% 47-169 MSRPD ug/L 25.00 1.3% <24 ExBlk ug/L 0.000 12.5 Bromobenzene 5030B 08/18/17:210454VRG Blank ug/L ND <0.5 5030B 08/18/17:210456VRG Blank ug/kg ND <250 5030B 08/21/17:210459VRG Blank ug/L ND <0.5 ExBlk ug/L 0.000 12.5 Bromochloromethane 5030B 08/18/17:210454VRG Blank ug/L ND <0.5 5030B 08/18/17:210456VRG Blank ug/kg ND <250 5030B 08/21/17:210459VRG Blank ug/L ND <0.5 ExBlk ug/L. 0.000 12.5 Bromodichloromethane 5030B 08/18/17:210454VRG Blank ug/L ND <0.5 5030B 08/18/17:210456VRG Blank ug/kg ND <250 5030B 08/21/17:210459VRG Blank ug/L ND <0.5 ExBlk ug/L 0.000 12.5 Bromoform 5030B 08/18/17:210454VRG Blank ug/L ND <0.5 5030B 08/18/17:210456VRG Blank ug/kg ND <250 5030B 08/21/17:210439VRG Blank ug/L ND <0.5 ExBlk ug/L 0.000 12.5 --r l Bromomethane(Methyl Bromide) 5030B 08/18/17:210454VRG I Blank ug/L ND <0.5 Page 26 of 44 September 21, 2017 Lab ID : SP 1710078 South Tahoe Public Utility District Customer : 2-11369 Quality Control-Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Bromomethane(Methyl Bromide) 5030B 08/18/17:210456VRG Blank ug/kg ND <250 5030B 08/21/17:210459VRG Blank ug/L ND <0.5 ExBlk ug/L 0.000 12.5 Carbon Disulfide 5030B 08/18/17:210454VRG Blank ug/L ND <20 5030B 08/18/17:210456VRG Blank ug/kg ND <1250 5030B 08/21/17:210459VRG Blank ug/L ND <20 ExBlk ug/L 0 500 Carbon Tetrachloride 5030B 08/18/17:210454VRG Blank ug/L ND <1 5030B 08/18/17:210456VRG Blank ug/kg ND <250 5030B 08/21/17:210459VRG Blank ug/L ND <1 ExBlk ug/L 0.00 25 Chlorobenzene 5030B 08/18/17:210454VRG Blank ug/L ND <0.5 LCS ug/L 25.00 87.1% 56-152 MS ug/L 25.00 123% 31-212 (SP 1710078-002) MSD ug/L 25.00 118% 31-212 MSRPD ug/L 25.00 4.8% <27 5030B 08/18/17:210456VRG Blank ug/kg ND <250 LCS ug/kg 1250 115% 86-185 MS ug/kg 1209 122% 18-165 (STK1750351-001) MSD ug/kg 1229 123% 18-165 MSRPD ug/kg 0.000 2.9% <40.3 5030B 08/21/17:210459VRG Blank ug/L ND <0.5 LCS ug/L 25.00 93.3% 56-152 MS ug/L 25.00 119% 31-212 (SP 1710078-001) MSD ug/L 25.00 116% 31-212 MSRPD ug/L 25.00 2.5% <27 ExBlk ug/L 0.000 12.5 Chloroethane(Ethyl Chloride) 5030B 08/18/17:210454VRG Blank ug/L ND <1 5030B 08/18/17:210456VRG Blank ug/kg ND <250 5030B 08/21/17:210459VRG Blank ug/L ND <1 ExBlk ug/L 0.00 25 Chloroform 5030B 08/18/17:210454VRG Blank ug/L ND <1 5030B 08/18/17:210456VRG Blank ug/kg ND <250 5030B 08/21/17:210459VRG Blank ug/L ND <1 ExBlk u L 0.00 25 Chloromethane(Methyl Chloride) 5030B 08/18/17:210454VRG Blank ug/L ND <0.5 5030B 08/18/17:210456VRG Blank ug/kg ND <250 5030B 08/21/17:210459VRG Blank ug/L ND <0.5 ExBlk ug/L 0.000 12.5 cis-1,2-Dichloroethylene 5030B 08/18/17:210454VRG Blank ug/L ND <0.5 5030B 08/18/17:210456VRG Blank ug/kg ND <250 5030B 08/21/17:210459VRG Blank ug/L ND <0.5 ExBlk ug/L 0.000 12.5 cis-1,3-Dichloropropene 5030B 08/18/17:210454VRG Blank ug/L ND <0.5 5030B 08/18/17:210456VRG Blank ug/kg ND <250 5030B 08/21/17:210459VRG Blank ug/L ND <0.5 ExBlk u L 0.000 12.5 Dibromochloromethane 5030B 08/18/17:210454VRG Blank ug/L ND <1 5030B 08/18/17:210456VRG Blank ug/kg ND <250 5030B 08/21/17:210459VRG Blank ug/L ND <1 ExBlk ug/L 0.00 25 Dibromofluromethane 5030B 08/18/17:210454VRG Blank ug/L 25.00 92.5% 84-136 LCS ug/L 25.00 92.0% 84-136 MS ug/L 25.00 90.9% 86-127 Page 27 of 44 September 21, 2017 Lab ID SP 1710078 South Tahoe Public Utility District Customer : 2-11369 Quality Control- Organic - Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Dibromofluromethane 5030B (SP 1710078-002) MSD ug/L 25.00 90.5% 86-127 MSRPD ug/L 25.00 0.4% <_20.0 5030B 08/18/17:210456VRG Blank ug/kg 1250 99.2% 48-132 LCS ug/kg 1250 100% 48-132 MS ug/kg 1209 107% 48-132 (STK1750351-001) MSD ug/kg 1229 108% 48-132 MSRPD ug/kg 0.000 3.0% <20.0 5030B 08/21/17:210459VRG Blank ug/L 25.00 93.0% 84-136 LCS ug/L 25.00 90.5% 84-136 MS ug/L 25.00 92.1% 86-127 (SP 1710078-001) MSD ug/L 25.00 89.2% 86-127 MSRPD ug/L 25.00 3.3% <20.0 ExBlk ug/L 0.0% N/A Dibromomethane 5030B 08/18/17:210454VRG Blank ug/L ND <0.5 5030B 08/18/17:210456VRG Blank ug/kg ND <250 5030B 08/21/17:210459VRG Blank ug/L ND <0.5 ExBlk ug/L 0.000 12.5 Dichlorodifluoromethane 5030B 08/18/17:210454VRG Blank ug/L ND <0.5 5030B 08/18/17:210456VRG Blank ug/kg ND <250 5030B 08/21/17:210459VRG Blank ug/L ND <0.5 ExBlk ug/L 0.000 12.5 ichloromethane 5030B 08/18/17:210454VRG Blank ug/L ND <0.5 5030B 08/18/17:210456VRG Blank ug/kg ND <250 5030B 08/21/17:210459VRG Blank ug/L ND <0.5 ExBlk ug/L 0.000 12.5 Ethyl tert-Butyl Ether 5030B 08/18/17:210454VRG Blank ug/L ND <2 5030B 08/18/17:210456VRG Blank ug/kg ND <250 5030B 08/21/17:210439VRG Blank ug/L ND <2 ExBlk ug/L 0.0 50 Ethylbenzene 5030B 08/18/17:210454VRG Blank ug/L ND <0.5 5030B 08/18/17:210456VRG Blank ug/kg ND <250 5030B 08/21/17:210459VRG Blank ug/L ND <0.5 ExBlk u L 0.000 12.5 Freon-II 5030B 08/18/17:210454VRG Blank ug/L ND <1 5030B 08/18/17:210456VRG Blank ug/kg ND <250 5030B 08/21/17:210459VRG Blank ug/L ND <1 ExBlk ug/L 0.00 25 exachlorobutadiene 5030B 08/18/17:210454VRG Blank ug/L ND <0.5 5030B 08/18/17:210456VRG Blank ug/kg ND <250 5030B 08/21/17:210459VRG Blank ug/L ND <0.5 ExBlk ug/L _ 0.000 12.5 Isopropyl Ether 5030B 08/18/17:210454VRG Blank ug/L ND <5 5030B 08/18/17:210456VRG Blank ug/kg ND <250 5030B 08/21/17:210459VRG Blank ug/L ND <5 ExBlk ug/L 0.00 125 Isopropylbenzene 5030B 08/18/17:210454VRG Blank ug/L ND <0.5 5030B 08/18/17:210456VRG Blank ug/kg ND <250 5030B 08/21/17:210459VRG Blank ug/L ND <0.5 ExBlk ug/L 0.000 12.5 Methyl tert-Butyl Ether(MTBE) 5030B 08/18/17:210454VRG Blank ug/L ND <2 5030B 08/18/17:210456VRG Blank ug/kg ND <250 5030B 08/21/17:210459VRG Blank ug/L ND <2 ExBlk ug/L 0.0 50 kaphthalene 5030B 08/18/17:210454VRG I Blank I ug/L I I ND <0.5 Page 28 of 44 September 21, 2017 Lab ID : SP 1710078 South Tahoe Public Utility District Customer : 2-11369 Quality Control-Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic aphthalene 5030B 08/18/17:210456VRG Blank ug/kg ND <250 5030B 08/21/17:210459VRG Blank ug/L ND <0.5 ExBlk ug/L 0.000 12.5 n-Butylbenzene 5030B 08/18/17:210454VRG Blank ug/L ND <0.5 5030B 08/18/17:210456VRG Blank ug/kg ND <250 5030B 08/21/17:210459VRG Blank ug/L ND <0.5 ExBlk ug/L 0.000 12.5 -Propylbenzene 5030B 08/18/17:210454VRG Blank ug/L ND <0.5 5030B 08/18/17:210456VRG Blank ug/kg ND <250 5030B 08/21/17:210459VRG Blank ug/L ND <0.5 ExBlk ug/L 0.000 12.5 -Isopropyltoluene 5030B 08/18/17:210454VRG Blank ug/L ND <0.5 5030B 08/18/17:210456VRG Blank ug/kg ND <250 5030B 08/21/17:210459VRG Blank ug/L ND <0.5 ExBlk ug/L 0.000 12.5 sec-Butylbenzene 5030B 08/18/17:210454VRG Blank ug/L ND <0.5 5030B 08/18/17:210456VRG Blank ug/kg ND <250 5030B 08/21/17:210459VRG Blank ug/L ND <0.5 ExBlk ug/L 0.000 12.5 Styrene 5030B 08/18/17:210454VRG Blank ug/L ND <0.5 5030B 08/18/17:210456VRG Blank ug/kg ND <250 5030B 08/21/17:210459VRG Blank ug/L ND <0.5 ExBlk ug/L 0.000 12.5 TAME 5030B 08/18/17:210454VRG Blank ug/L ND <5 5030B 08/18/17:210456VRG Blank ug/kg ND <250 5030B 08/21/17:210459VRG Blank ug/L ND <5 ExBlk u L 0.00 125 ert-Butanol 5030B 08/18/17:210454VRG Blank ug/L ND <5 5030B 08/18/17:210456VRG Blank ug/kg ND <1250 5030B 08/21/17:210459VRG Blank ug/L ND <5 ExBlk ug/L 0.00 125 ert-Butylbenzene 5030B 08/18/17:210454VRG Blank ug/L ND <0.5 5030B 08/18/17:210456VRG Blank ug/kg ND <250 5030B 08/21/17:210459VRG Blank ug/L ND <0.5 ExBlk ug/L 0.000 12.5 Tetrachloroethylene(PCE) 5030B 08/18/17:210454VRG Blank ug/L ND <0.5 5030B 08/18/17:210456VRG Blank ug/kg ND <250 5030B 08/21/17:210459VRG Blank ug/L ND <0.5 ExBlk ug/L 0.000 12.5 oluene 5030B 08/18/17:210454VRG Blank ug/L ND <0.5 LCS ug/L 25.00 86.7% 56-131 MS ug/L 25.00 133% 44-164 (SP 1710078-002) MSD ug/L 25.00 127% 44-164 MSRPD ug/L 25.00 4.9% <30 5030B 08/18/17:210456VRG Blank ug/kg ND <250 LCS ug/kg 1250 129% 88-160 MS ug/kg 1209 136% 22-171 (STK1750351-001) MSD ug/kg 1229 134% 22-171 MSRPD ug/kg 0.000 0.03% <35.8 5030B 08/21/17:210459VRG Blank ug/L ND <0.5 LCS ug/L 25.00 90.1% 56-131 MS ug/L 25.00 123% 44-164 (SP 1710078-001) MSD ug/L 25.00 122% 44-164 MSRPD ug/L 25.00 0.4% <30 Page 29 of 44 September 21, 2017 Lab.ID : SP 1710078 South Tahoe Public Utility District Customer : 2-11369 Quality Control- Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Toluene 5030B 08/21/17:210459VRG ExBlk ug/L 0.000 12.5 Toluene-d8 5030B 08/18/17:210454VRG Blank ug/L 25.00 98.2% 88-111 LCS ug/L 25.00 103% 88-111 MS ug/L 25.00 102% 88-111 (SP 1710078-002) MSD ug/L 25.00 102% 88-111 MSRPD ug/L 25.00 0.06% <20.0 5030B 08/18/17:210456VRG Blank ug/kg 1250 94.8% 49-124 LCS ug/kg 1250 100% 49-124 MS ug/kg 1209 107% 49-124 (STK1750351-001) MSD ug/kg 1229 107% 49-124 MSRPD ug/kg 0.000 1.3% <20.0 5030B 08/21/17:210459VRG Blank ug/L 25.00 99.1% 88-111 LCS ug/L 25.00 102% 88-111 MS ug/L 25.00 97.3% 88-111 (SP 1710078-001) MSD ug/L 25.00 103% 88-111 MSRPD ug/L 25.00 6.0% <20.0 ExBlk ug/L 0.0% N/A trans-1,2-Dichloroethylene 5030B 08/18/17:210454VRG Blank ug/L ND <0.5 5030B 08/18/17:210456VRG Blank ug/kg ND <250 5030B 08/21/17:210459VRG Blank ug/L ND <0.5 ExBlk ug/L 0.000 12.5 rans-1,3-Dichloropropene 5030B 08/18/17:210454VRG Blank ug/L ND <0.5 5030B 08/18/17:210456VRG Blank ug/kg ND <250 5030B 08/21/17:210459VRG Blank ug/L ND <0.5 ExBlk ug/L 0.000 12.5 Trichloroethylene(TCE) 5030B 08/18/17:210454VRG Blank ug/L ND <0.5 LCS ug/L 25.00 84.2% 61-123 MS ug/L 25.00 126% 41-167 (SP 1710078-002) MSD ug/L 25.00 120% 41-167 MSRPD ug/L 25.00 4.6% <32 5030B 08/18/17:210456VRG Blank ug/kg ND <250 LCS ug/kg 1250 118% 65-147 MS ug/kg 1209 126% 14-170 (STK1750351-001) MSD ug/kg 1229 121% 14-170 MSRPD ug/kg 0.000 2.2% <44.7 5030B 08/21/17:210459VRG Blank ug/L ND <0.5 LCS ug/L 25.00 82.6% 61-123 Ms ug/L 25.00 121% 41-167 (SP 1710078-001) MSD ug/L 25.00 116% 41-167 MSRPD ug/L 25.00 3.9% <32 ExBlk ug/L 0.000 12.5 Vinyl Acetate 5030B 08/18/17:210454VRG Blank ug/L ND <10 5030B 08/18/17:210456VRG Blank ug/kg ND <1250 5030B 08/21/17:210459VRG Blank ug/L ND <10 ExBlk ug/L 0.0 250 Vinyl Chloride 5030B 08/18/17:210454VRG Blank ug/L ND <0.5 5030B 08/18/17:210456VRG Blank u kg ND <250 5030B 08/21/17:210459VRG Blank ug/L ND <0.5 ExBlk ug/L 0.000 12.5 ylenes m,p 5030B 08/18/17:210454VRG Blank ug/L ND <2 5030B 08/18/17:210456VRG Blank ug/kg ND <250 5030B 08/21/17:210459VRG Blank ug/L ND' <2 ExBlk ug/L 0.0 50 ylenes o I 5030B 08/18/17:210454VRG I Blank I ug/L I ND 1 <2 Page 30 of 44 September 21, 2017 Lab ID : SP 1710078 South Tahoe Public Utility District Customer : 2-11369 Quality Control-Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic ylenes o 5030B 08/18/17:210456VRG Blank ug/kg ND <250 5030B 08/21/17:210459VRG Blank ug/L ND <2 ExBlk ug/L 0.0 50 Aldrin 608/8081 08/21/17:209988caa Blank ug/L ND <0.05 LCS ug/L 0.5000 42.0% 38-122 BS ug/L 0.5000 74.9% 26-126 BSD ug/L 0.5000 69.8% 26-126 BSRPD ug/L 0.5000 7.0% <20 608/8081 08/26/17:212821SBL CCV ug/L 100.0 106% 85-115 CCV ug/L 50.00 86.8% 85-115 CCV ug/L 100.0 88.9% 85-115 CCV ug/L 50.00 87.0% 85-115 Alpha BHC 608/8081 08/21/17:209988caa Blank ug/L ND <0.05 LCS ug/L 0.5000 51.8% 43-119 BS ug/L 0.5000 89.5% 48-124 BSD ug/L 0.5000 81.6% 48-124 BSRPD ug/L 0.5000 9.2% <14 608/8081 08/26/17:213017SBL CCV ug/L 100.0 118% 85-115 360 CCV ug/L 50.00 114% 85-115 CCV ug/L 100.0 117% 85-115 360 CCV ug/L 50.00 112% 85-115 alpha-Chlordane 608/8081 08/21/17:209988caa Blank ug/L ND <0.05 LCS ug/L 0.5000 48.2% 37-125 BS ug/L 0.5000 87.2% 35-124 BSD ug/L 0.5000 87.8% 35-124 BSRPD ug/L 0.5000 0.7% <32 608/8081 08/26/17:212821 SBL CCV ug/L 100.0 111% 85-115 CCV ug/L 50.00 91.0% 85-115 CCV ug/L 100.0 94.1% 85-115 CCV ug/L 50.00 88.2% 85-115 Beta BHC 608/8081 08/21/17:209988caa Blank ug/L ND <0.05 LCS ug/L 0.5000 46.8% 35-124 BS ug/L 0.5000 84.2% 50-123 BSD ug/L 0.5000 78.9% 50-123 BSRPD ug/L 0.5000 6.5% <15 608/8081 08/26/17:212821SBL CCV ug/L 100.0 113% 85-115 CCV ug/L 50.00 91.9% 85-115 CCV ug/L 100.0 93.8% 85-115 CCV ug/L 50.00 89.9% 85-115 Chlordane 608/8081 08/21/17:209988caa Blank ug/L ND <0.1 DDD 608/8081 08/21/17:209988caa Blank ug/L ND <0.05 LCS ug/L 0.5000 54.2% 38-129 BS ug/L 0.5000 88.0% 32-130 BSD ug/L 0.5000 111% 32-130 BSRPD ug/L 0.5000 23.1% <37 DDE 608/8081 08/21/17:209988caa Blank ug/L ND <0.05 LCS ug/L 0.5000 48.1% 33-133 BS ug/L 0.5000 90.0% 13-133 BSD ug/L 0.5000 89.7% 13-133 BSRPD ug/L 0.5000 0.3% <16 DDT 608/8081 08/21/17:209988caa Blank ug/L ND <0.05 LCS ug/L 0.5000 53.4% 45-127 BS ug/L 0.5000 97.0% 6-146 BSD ug/L 0.5000 97.8% 6-146 Page 31 of 44 September 21, 2017 Lab ID : SP 1710078 South Tahoe Public Utility District Customer : 2-11369 Quality Control- Organic Constituent Method Date/ID Type Units Cone. QC Data DQO Note Organic DDT 608/8081 08/21/17:209988caa BSRPD ug/L 0.5000 0.8% <16 Delta BHC 608/8081 08/21/17:209988caa Blank ug/L ND <0.05 LCS ug/L 0.5000 43.1% 38-132 BS ug/L 0.5000 79.1% 45-132 BSD ug/L 0.5000 73.8% 45-132 BSRPD ug/L 0.5000 6.9% <15 608/8081 08/26/17:212821 SBL CCV ug/L 100.0 103% 85-115 CCV ug/L 50.00 87.5% 85-115 CCV ug/L 100.0 89.3% 85-115 CCV ug/L 50.00 86.7% 85-115 Dicofol 608/8081 08/21/17:209988caa Blank ug/L ND <0.05 LCS ug/L 1.000 27.0% 0-285 BS ug/L 1.000 48.9% 0-201 BSD ug/L 1.000 48.4% 0-201 BSRPD ug/L 0.5000 1.1% <68 608/8081 .08/26/17:212821 SBL CCV ug/L 200.0 103% 85-115 CCV ug/L 100.0 85.7% 85-115 CCV ug/L 200.0 85.4% 85-115 CCV ug/L 100.0 52.1% 85-115 355 Dieldrin 608/8081 08/21/17:209988caa Blank ug/L ND <0.05 LCS ug/L 0.5000 45.8% 36-122 BS ug/L 0.5000 82.9% 49-118 BSD ug/L 0.5000 77.2% 49-118 BSRPD ug/L 0.5000 7.0% <20 608/8081 08/26/17:212821 SBL CCV ug/L 100.0 104% 85-115 CCV ug/L 50.00 86.4% 85-115 CCV ug/L 100.0 89.2% 85-115 CCV ug/L 50.00 86.5% 85-115 Endosulfan I 608/8081 08/21/17:209988caa Blank ug/L ND <0.05 LCS ug/L 0.5000 48.6% 10-174 BS ug/L 0.5000 89.5% 17-168 BSD ug/L 0.5000 90.7% 17-168 BSRPD ug/L 0.5000 1.4% <22 608/8081 08/26/17:212821 SBL CCV ug/L 100.0 111% 85-115 CCV ug/L 50.00 93.5% 85-115 CCV ug/L 100.0 97.0% 85-115 CCV ug/L 50.00 89.5% 85-115 Endosulfan II 608/8081 08/21/17:209988caa Blank ug/L ND <0.05 LCS ug/L 0.5000 51.8% 0-241 BS ug/L 0.5000 98.7% 0-291 BSD ug/L 0.5000 106% 0-291 BSRPD ug/L 0.5000 7.0% <24 608/8081 08/26/17:212821 SBL CCV ug/L 100.0 119% 85-115 360 CCV ug/L 50.00 96.1% 85-115 CCV ug/L 100.0 104% 85-115 CCV ug/L 50.00 91.5% 85-115 Endosulfan Sulfate 608/8081 08/21/17:209988caa Blank ug/L ND <0.05 LCS ug/L 0.5000 50.6% 34-131 BS ug/L 0.5000 87.9% 47-128 BSD ug/L 0.5000 93.0% 47-128 BSRPD ug/L 0.5000 5.6% <19 608/8081 08/26/17:212821SBL CCV ug/L 100.0 112% 85-115 CCV ug/L 50.00 89.0% 85-115 CCV ug/L 100.0 95.0% 85-115 Page 32 of 44 September 21, 2017 Lab ID : SP 1710078 South Tahoe Public Utility District Customer : 2-11369 Quality Control-Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Endosulfan Sulfate 608/8081 08/26/17:212821SBL CCV ug/L 50.00 84.2% 85-115 355 Endrin 608/8081 08/21/17:209988caa Blank ug/L ND <0.05 LCS ug/L 0.5000 44.3% 0-189 BS ug/L 0.5000 58.8% 43-132 BSD ug/L 0.5000 32.2% 43-132 436 BSRPD ug/L 0.5000 0.13 <0.05 410 608/8081 08/26/17:212821SBL CCV ug/L 100.0 103% 85-115 CCV ug/L 50.00 88.3% 85-115 CCV ug/L 100.0 89.8% 85-115 CCV ug/L 50.00 81.6% 85-115 355 Endrin Aldehyde 608/8081 08/21/17:209988caa Blank ug/L ND <0.05 LCS ug/L 0.5000 43.3% 31-133 BS ug/L 0.5000 90.5% 16-116 BSD ug/L 0.5000 95.2% 16-116 BSRPD ug/L 0.5000 5.0% <13 608/8081 08/26/17:212821 SBL CCV ug/L 100.0 105% 85-115 CCV ug/L 50.00 91.8% 85-115 CCV ug/L 100.0 92.9% 85-115 CCV ug/L 50.00 89.4% 85-115 Endrin Ketone 608/8081 08/21/17:209988caa Blank ug/L ND <0.05 LCS ug/L 0.5000 50.3% 34-150 BS ug/L 0.5000 103% 28-162 BSD ug/L 0.5000 125% 28-162 BSRPD ug/L 0.5000 18.9% <20 608/8081 08/26/17:212821SBL CCV ug/L 100.0 105% 85-115 CCV ug/L 50.00 90.8% 85-115 CCV ug/L 100.0 93.2% 85-115 CCV ug/L 50.00 88.0% 85-115 gamma-Chlordane 608/8081 08/21/17:209988caa Blank ug/L ND <0.05 LCS ug/L 0.5000 46.7% 36-125 BS ug/L 0.5000 84.5% 31-123 BSD ug/L 0.5000 85.0% 31-123 BSRPD ug/L 0.5000 0.6% <22 608/8081 08/26/17:212821 SBL CCV ug/L 100.0 108% 85-115 CCV ug/L 50.00 89.5% 85-115 CCV ug/L 100.0 91.6% 85-115 CCV ug/L 50.00 87.0% 85-115 Heptachlor 608/8081 08/21/17:209988caa Blank ug/L ND <0.05 LCS ug/L 0.5000 41.2% 34-126 BS ug/L 0.5000 77.4% 41-114 BSD ug/L 0.5000 61.1% 41-114 BSRPD ug/L 0.5000 23.6% <28 608/8081 08/26/17:212821SBL CCV ug/L 100.0 110% 85-115 CCV ug/L 50.00 96.5% 85-115 CCV ug/L 100.0 97.9% 85-115 CCV ug/L 50.00 93.8% 85-115 Heptachlor Epoxide 608/8081 08/21/17:209988caa Blank ug/L ND <0.05 LCS ug/L 0.5000 42.2% 39-126 BS ug/L 0.5000 87.5% 45-122 BSD ug/L 0.5000 80.7% 45-122 BSRPD ug/L 0.5000 8.1% 523 608/8081 08/26/17:212821SBL CCV ug/L 100.0 102% 85-115 CCV ug/L 50.00 92.0% 85-115 CCV ug/L 100.0 89.5% 85-115 Page 33 of 44 September 21, 2017 Lab ID : SP 1710078 South Tahoe Public Utility District Customer : 2-11369 Quality Control-Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Heptachlor Epoxide 608/8081 08/26/17:212821SBL CCV ug/L 50.00 109% 85-115 Lindane 608/8081 08/21/17:209988caa Blank ug/L ND <0.05 LCS ug/L 0.5000 42.1% 41-123 BS ug/L 0.5000 76.3% 46-127 BSD ug/L 0.5000 69.6% 46-127 BSRPD ug/L 0.5000 9.2% <16 608/8081 08/26/17:212821SBL CCV ug/L 100.0 105% 85-115 CCV ug/L 50.00 86.1% 85-115 CCV ug/L 100.0 89.4% 85-115 CCV ug/L 50.00 86.4% 85-115 Methoxychlor 608/8081 08/21/17:209988caa Blank ug/L ND <0.1 LCS ug/L 0.5000 54.0% 23-142 BS ug/L 0.5000 97.0% 51-126 BSD ug/L 0.5000 83.1% 51-126 BSRPD ug/L 0.5000 0.069 <0.1 608/8081 08/26/17:212821SBL CCV ug/L 100.0 110% 85-115 CCV ug/L 50.00 95.5% 85-115 CCV ug/L 100.0 97.1% 85-115 CCV ug/L 50.00 81.5% 85-115 355 ,p-DDD 608/8081 08/26/17:212821SBL CCV ug/L 100.0 121% 85-115 360 CCV ug/L 50.00 98.5% 85-115 CCV ug/L 100.0 106% 85-115 CCV ug/L 50.00 87.6% 85-115 ,p-DDE 608/8081 08/26/17:212821 SBL CCV ug/L 100.0 109% 85-115 CCV ug/L 50.00 93.6% 85-115 CCV ug/L 100.0 93.6% 85-115 CCV ug/L 50.00 91.7% 85-115 ,p-DDT 608/8081 08/26/17:212821 SBL CCV ug/L 100:0 117% 85-115 360 CCV ug/L 50.00 92.2% 85-115 CCV ug/L 100.0 98.9% 85-115 CCV ug/L 50.00 76.4% 85-115 355 Tetrachloro-m-xylene 608/8081 08/21/17:209988caa Blank ug/L 0.5005 54.1% 15-143 LCS ug/L 0.5005 47.3% 15-143 BS ug/L 0.5005 72.6% 26-141 BSD ug/L 0.5005 50.0% 26-141 BSRPD ug/L 0.5000 36.8% <29 410 608/8081 08/26/17:212821SBL CCV ug/L 100.1 99.0% 85-115 CCV ug/L 50.05 85.4% 85-115 CCV ug/L 100.1 85.4% 85-115 CCV ug/L 50.05 85.9% 85-115 oxaphene 608/8081 08/21/17:209988caa Blank ug/L ND <0.5 CB 1016 8082 08/25/17:212741 SBL CCV ug/L 501.5 91.2% 70-130 CCV ug/L 1003 78.0% 70-130 CB 1260 8082 08/25/17:212741SBL CCV ug/L 500.0 86.5% 70-130 CCV ug/L 1000 72.4% 70-130 Tetrachloro-m-xylene 8082 08/25/17:212741SBL CCV ug/L 200.2 86.5% 85-115 CCV ug/L 300.3 80.1% 85-115 355 PCB 1016/1242-1 8082A 08/22/17:210030caa Blank ug/L ND <0.5 LCS ug/L 2.500 82.8% 36-134 BS ug/L 2.500 65.9% 36-134 BSD ug/L 2.500 42.5% 36-134 BSRPD ug/L 0.5005 0.58 <0.5 410 CB 1221-1 8082A 08/22/17:210030caa Blank ug/L ND <0.5 PCB 1232-1 8082A 08/22/17:210030caa Blank ug/L ND <0.5 Page 34 of 44 1 September 21, 2017 Lab ID : SP 1710078 South Tahoe Public Utility District Customer : 2-11369 Quality Control- Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic PCB 1242 8082A 08/22/17:210030caa Blank ug/L ND <0.5 PCB 1248-1 8082A 08/22/17:210030caa Blank ug/L ND <0.5 PCB 1254-1 8082A 08/22/17:210030caa Blank ug/L ND <0.5 CB 1260-1 8082A 08/22/17:210030caa Blank ug/L ND <0.5 LCS ug/L 2.502 85.9% 39-119 BS ug/L 2.502 74.0% 39-119 BSD ug/L 2.502 47.0% 39-119 BSRPD ug/L 0.5005 0.68 <0.5 410 Tetrachloro-m-xylene 8082A 08/22/17:210030caa Blank ug/L 0.5005 54.1% 26-102 LCS ug/L 0.5005 74.8% 26-102 BS ug/L 0.5005 55.0% N/A BSD ug/L 0.5005 26.1% N/A BSRPD ug/L 0.5005 0.14 <0.05 410 1,1,1,2-Tetrachloroethane 8260B 08/18/17:213071VRG CCV ug/L 25.00 126% 70-130 8260B 08/21/17:213073VRG CCV ug/L 25.00 117% 70-130 1,1,1-Trichloroethane(TCA) 8260B 08/18/17:213071VRG CCV ug/L 25.00 101% 70-130 8260B 08/21/17:213073VRG CCV ug/L 25.00 90.8% 70-130 1,1,2,2-Tetrachloroethane 8260B 08/18/17:213071VRG CCV ug/L 25.00 119% 70-130 8260B 08/21/17:213073VRG CCV ug/L 25.00 115% 70-130 1,1,2-Trichloroethane 8260B 08/18/17:213071VRG CCV ug/L 25.00 122% 70-130 8260B 08/21/17:213073VRG CCV ug/L 25.00 111% 70-130 1,1-Dichloroethane 8260B 08/18/17:213071VRG CCV ug/L 25.00 88.2% 70-130 8260B 08/21/17:213073VRG CCV ug/L 25.00 90.3% 70-130 1,1-Dichloroethylene 8260B 08/18/17:213071VRG CCV ug/L 25.00 92.8% 80-120 8260B 08/21/17:213073VRG CCV ug/L 25.00 91.1% 80-120 1,1-Dichloropropene 8260B 08/18/17:213071VRG CCV ug/L 25.00 119% 70-130 8260B 08/21/17:213073VRG CCV ug/L 25.00 105% 70-130 1,2,3-Trichlorobenzene 8260B 08/18/17:213071VRG CCV ug/L 25.00 151% 70-130 360 8260B 08/21/17:213073VRG CCV ug/L 25.00 132% 70-130 360 1,2,4-Trichlorobenzene 8260B 08/18/17:213071 VRG CCV ug/L 25.00 117% 70-130 8260B 08/21/17:213073VRG CCV ug/L 25.00 102% 70-130 1,2,4-Trimethylbenzene 8260B 08/18/17:213071VRG CCV ug/L 25.00 136% 70-130 360 8260B 08/21/17:213073VRG CCV ug/L 25.00 121% 70-130 1,2-Dichlorobenzene 8260B 08/18/17:213071VRG CCV ug/L 25.00 126% 70-130 8260B 08/21/17:213073VRG CCV ug/L 25.00 114% 70-130 1,2-Dichloroethane(EDC) 8260B 08/18/17:213071VRG CCV ug/L 25.00 145% 70-130 360 8260B 08/21/17:213073VRG CCV ug/L 25.00 139% 70-130 360 1,2-Dichloroethane-d4 8260B 08/18/17:213071VRG CCV ug/L 25.00 115% 70-130 8260B 08/21/17:213073VRG CCV ug/L 25.00 115% 70-130 1,2-Dichloropropane 8260B 08/18/17:213071VRG CCV ug/L 25.00 116% 80-120 8260B 08/21/17:213073VRG CCV ug/L 25.00 107% 80-120 1,3,5-Trimethylbenzene 8260B 08/18/17:213071VRG CCV ug/L 25.00 129% 70-130 8260B 08/21/17:213073VRG CCV ug/L 25.00 120% 70-130 1,3-Dichlorobenzene 8260B 08/18/17:213071VRG CCV ug/L 25.00 111% 70-130 8260B 08/21/17:213073VRG CCV ug/L 25.00 104% 70-130 1,3-Dichloropropane 8260B 08/18/17:213071VRG CCV ug/L 25.00 127% 70-130 8260B 08/21/17:2'13073VRG CCV ug/L 25.00 113% 70-130 1,4-Dichlorobenzene 8260B 08/18/17:213071 VRG CCV ug/L 25.00 129% 70-130 8260B 08/21/17:213073VRG CCV ug/L 25.00 116% 70-130 ,2-Dichloropropane 8260B 08/18/17:213071VRG CCV ug/L 25.00 80.3% 70-130 8260B 08/21/17:213073VRG CCV ug/L 25.00 76.4% 70-130 -Butanone(MEK) I 8260B 08/18/17:213071VRG I CCV I ug/L 100.0 117% 50-150 8260B 08/21/17:213073VRG I CCV I ug/L 1 100.0 1 106% 1 50-150 Page 35 of 44 September 21, 2017 Lab ID : SP 1710078 South Tahoe Public Utility District Customer : 2-11369 Quality Control- Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic -Butanone(MEK) 8260B 08/29/17:213079VRG CCV ug/L 100.0 102% 50-150 2-Chlorotoluene 8260B 08/18/17:213071 VRG CCV ug/L 25.00 130% 70-130 8260B 08/21/17:213073VRG CCV ug/L 25.00 121% 70-130 -Hexanone 8260B 08/18/17:213071VRG CCV ug/L 100.0 122% 50-150 8260B 08/21/17:213073VRG CCV ug/L 100.0 112% 50-150 -Bromofluorobenzene(BFB) 8260B 08/18/17:213071VRG CCV ug/L 25.00 96.9% 70-130 8260B 08/21/17:213073VRG CCV ug/L 25.00 97.5% 70-130 -Chlorotoluene 8260B 08/18/17:213071.VRG CCV ug/L 25.00 129% 70-130 8260B 08/21/17:213073VRG CCV ug/L 25.00 118% 70-130 -Methyl-2-pentanone(MIBK) 8260B 08/18/17:213071VRG CCV ug/L 100.0 130% 50-150 8260B 08/21/17:213073VRG CCV ug/L 100.0 115% 50-150 Acetone 8260B 08/18/17:213071VRG CCV ug/L 100.0 103% 50-150 8260B 08/21/17:213073VRG CCV ug/L 100.0 98.6% 50-150 8260B 08/29/17:213079VRG CCV ug/L 100.0 98.5% 50-150 crolein 8260B 08/18/17:213071VRG CCV ug/L 40.00 59.0% 50-150 8260B 08/21/17:213073VRG CCV ug/L 40.00 991% 50-150 360 crylonitrile 8260B 08/18/17:213071VRG CCV ug/L 40.00 62.7% 50-150 8260B 08/21/17:213073VRG CCV ug/L 40.00 468% 50-150 360 Benzene 8260B 08/18/17:213071VRG CCV ug/L 25.00 115% 70-130 8260B 08/21/17:213073VRG CCV ug/L 25.00 106% 70-130 Bromobenzene 8260B 08/18/17:213071VRG CCV ug/L 25.00 138% 70-130 360 8260B 08/21/17:213073VRG CCV ug/L 25.00 129% 70-130 Bromochloromethane 8260B 08/18/17:213071VRG CCV ug/L 25.00 110% 70-130 8260B 08/21/17:213073VRG CCV ug/L 25.00 109% 70-130 Bromodichloromethane 8260B 08/18/17:213071VRG CCV ug/L 25.00 118% 70-130 8260B 08/21/17:213073VRG CCV ug/L 25.00 116% 70-130 Bromoform 8260B 08/18/17:213071 VRG CCV ug/L 25.00 113% 70-130 8260B 08/21/17:213073VRG CCV ug/L 25.00 107% 70-130 Bromomethane(Methyl Bromide) 8260B 08/18/17:213071VRG CCV ug/L 25.00 102% 70-130 8260B 08/21/17:213073VRG CCV ug/L 25.00 114% 70-130 Carbon Disulfide 8260B 08/18/17:213071VRG CCV ug/L 100.0 163% 50-150 360 8260B 08/21/17:213073VRG CCV ug/L 100.0 124% 50-150 Carbon Tetrachloride 8260B 08/18/17:213071VRG CCV ug/L 25.00 106% 70-130 8260B 08/21/17:213073VRG CCV ug/L 25.00 93.7% 70-130 Chlorobenzene 8260B 08/18/17:213071VRG CCV ug/L 25.00 114% 70-130 8260B 08/21/17:213073VRG CCV ug/L 25.00 102% 70-130 Chloroethane(Ethyl Chloride) 8260B 08/18/17:213071 VRG CCV ug/L 25.00 112% 70-130 8260B 08/21/17:213073VRG CCV ug/L, 25.00 108% 70-130 Chloroform 8260B 08/18/17:213071VRG CCV ug/L 25.00 107% 80-120 8260B 08/21/17:213073VRG CCV ug/L 25.00 104% 80-120 Chloromethane(Methyl Chloride) 8260B 08/18/17:213071 VRG CCV ug/L 25.00 90.5% 70-130 8260B 08/21/17:213073VRG CCV ug/L 25.00 115% 70-130 cis-1,2-Dichloroethylene 8260B 08/18/17:213071VRG CCV ug/L 25.00 83.5% 70-130 8260B 08/21/17:213073VRG CCV ug/L 25.00 82.3% 70-130 cis-1,3-Dichloropropene 8260B 08/18/17:213071VRG CCV ug/L 23.88 133% 70-130 360 8260B 08/21/17:213073VRG CCV ug/L 23.88 118% 70-130 ibromochloromethane 8260B 08/18/17:213071VRG CCV ug/L 25.00 116% 70-130 8260B 08/21/17:213073VRG CCV ug/L 25.00 107% 70-130 Dibromofluromethane 8260B 08/18/17:213071VRG CCV ug/L 25.00 90.0% 70-130 8260B 08/21/17:213073VRG CCV ug/L 25.00 89.3% 70-130 Dibromomethane 8260B 08/18/17`.213071VRG CCV ug/L 25.00 117% 70-130 8260B 08/21/17:213073VRG CCV I ug/L 25.00 1 111% 1 70-130 Dichlorodifluoromethane I 8260B 08/18/17:213071 VRG CCV 1 ug/L 25.00 70.0% 1 70-130 Page 36 of 44 September 21, 2017 Lab ID : SP 1710078 South Tahoe Public Utility District Customer : 2-11369 Quality Control- Organic Constituent Method Date/ID Type Units Cone. QC Data DQO Note Organic Dichlorodifluoromethane 8260B 08/21/17:213073VRG CCV ug/L 25.00 148% 70-130 360 Dichloromethane 8260B 08/18/17:213071 VRG CCV ug/L 25.00 84.3% 70-130 8260B 08/21/17:213073VRG CCV ug/L 25.00 74.0% 70-130 Ethyl tert-Butyl Ether 8260B 08/18/17:213071VRG CCV ug/L 25.00 102% 50-150 8260B 08/21/17:213073VRG CCV ug/L 25.00 107% 50-150 Ethylbenzene 8260B 08/18/17:213071VRG CCV ug/L 25.00 119% 80-120 8260B 08/21/17:213073VRG CCV ug/L 25.00 109% 80-120' Hexachlorobutadiene 8260B 08/18/17:213071VRG CCV ug/L 25.00 131% 70-130 360 8260B 08/21/17:213073VRG CCV ug/L 25.00 116% 70-130 Isopropyl Ether 8260B 08/18/17:213071VRG CCV ug/L 25.00 107% 50-150 8260B 08/21/17:213073VRG CCV ug/L 25.00 109% 50-150 Isopropylbenzene 8260B 08/18/17:213071VRG CCV ug/L 25.00 131% 70-130 360 8260B 08/21/17:213073VRG CCV ug/L 25.00 123% 70-130 Methyl tert-Butyl Ether 8260B 08/18/17:213071VRG CCV ug/L 25.00 92.0% 70-130 8260B 08/21/17:213073VRG CCV ug/L 25.00 96.9% 70-130 aphthalene 8260B 08/18/17:213071 VRG CCV ug/L 25.00 138% 70-130 360 8260B 08/21/17:213073VRG CCV ug/L 25.00 120% 70-130 -Butylbenzene 8260B 08/18/17:213071VRG CCV ug/L 25.00 127% 70-130 8260B 08/21/17:213073VRG CCV ug/L 25.00 119% 70-130 n-Propylbenzene 8260B 08/18/17:213071VRG CCV ug/L 25.00 133% 70-130 360 8260B 08/21/17:213073VRG CCV ug/L 25.00 122% 70-130 -Isopropyltoluene 8260B 08/18/17:213071VRG CCV ug/L 25.00 130% 70-130 8260B 08/21/17:213073VRG CCV ug/L 25.00 119% 70-130 sec-Butylbenzene 8260B 08/18/17:213071VRG CCV ug/L 25.00 133% 70-130 360 8260B 08/21/17:213073VRG CCV ug/L 25.00 122% 70-130 Styrene 8260B 08/18/17:213071VRG CCV ug/L 25.00 108% 70-130 8260B 08/21/17:213073VRG CCV ug/L 25.00 98.4% 70-130 TAME 8260B 08/18/17:213071VRG CCV ug/L 25.00 128% 50-150 8260B 08/21/17:213073VRG CCV ug/L 25.00 122% 50-150 ert-Butanol 8260B 08/18/17:213071VRG CCV ug/L 125.0 99.8% 50-150 8260B 08/21/17:213073VRG CCV ug/L 125.0 120% 50-150 ert-Butylbenzene 8260B 08/18/17:213071VRG CCV ug/L 25.00 101% 70-130 8260B 08/21/17:213073VRG CCV ug/L 25.00 89.1% 70-130 etrachloroethylene(PCE) 8260B 08/18/17:213071VRG CCV ug/L 25.00 113% 70-130 8260B 08/21/17:213073VRG CCV ug/L 25.00 101% 70-130 Toluene 8260B 08/18/17:213071 VRG CCV ug/L 25.00 120% 80-120 8260B 08/21/17:213073VRG CCV ug/L 25.00 112% 80-120 Toluene-d8 8260B 08/18/17:213071VRG CCV ug/L 25.00 96.8% 70-130 8260B 08/21/17:213073VRG CCV ug/L 25.00 95.5% 70-130 trans-1,2-Dichloroethylene 8260B 08/18/17:213071VRG CCV ug/L 25.00 85.0% 70-130 8260B 08/21/17:213073VRG CCV ug/L 25.00 86.1% 70-130 trans-l,3-Dichloropropene 8260B 08/18/17:213071VRG CCV ug/L 23.00 136% 70-130 360 8260B 08/21/17:213073VRG CCV ug/L 23.00 128% 70-130 Trichloroethylene(TCE) 8260B 08/18/17:213071VRG CCV ug/L 25.00 119% 70-130 8260B 08/21/17:213073VRG CCV ug/L 25.00 109% 70-130 Trichlorofluoromethane F-I I 8260B 08/18/17:213071VRG CCV ug/L 25.00 91.7% 70-130 8260B 08/21/17:213073VRG CCV ug/L 25.00 84.5% 70-130 Vinyl Acetate 8260B 08/18/17:213071VRG CCV ug/L 100.0 947% 50-150 360 8260B 08/21/17:213073VRG CCV ug/L 100.0 867% 50-150 360 Vinyl Chloride 8260B 08/18/17:213071VRG CCV ug/L 25.00 97.9% 80-120 8260B 08/21/17:213073VRG CCV ug/L 25.00 112% 80-120 ylene m,p 8260B 08/18/17:213071VRG I CCV ug/L 50.00 108% 70-130 8260B 08/21/17:213073VRG I CCV I ug/L 50.00 96.4% 70-130 Page 37 of 44 September 21,2017 Lab ID : SP 1710078 South Tahoe Public Utility District Customer : 2-11369 Quality Control-Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic ylenes o 8260B 08/18/17:213071 VRG CCV ug/L 25.00 109% 70-130 8260B 08/21/17:213073VRG CCV ug/L 25.00 98.1% 70-130 1,2,4-Tiichlorobenzene 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 LCS mg/kg 2.500 64.2% 34-138 MS mg/kg 2.500 61.6% 0-105 (STK1750351-001) MSD mg/kg 2.500 67.9% 0-105 MSRPD mg/kg 10.00 9.7% <1 435 8270C 09/07/17:213436SBL CCV mg/L 80.00 98.4% 70-130 8270C 09/08/17:213547SBL CCV mg/L 80.00 97.4% 70-130 1,2-Dichlorobenzene 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 8270C 09/07/17:213436SBL CCV mg/L 80.00 90.6% 70-130 8270C 09/08/17:213547SBL CCV mg/L 80.00 89.6% 70-130 1,2-Diphenylhydrazine 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 1,3-Dichlorobenzene 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 8270C 09/07/17:213436SBL CCV mg/L 80.00 91.3% 70-130 8270C 09/08/17:213547SBL' CCV mg/L 80.00 90.0% 70-130 1,4-Dichlorobenzene 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 LCS mg/kg 2.500 54.5% 24-140 MS mg/kg 2.500 49.7% 0-102 (STK1750351-001) MSD mg/kg 2.500 57.1% 0-102 MSRPD mg/kg 10.00 13.9% <1 435 8270C 09/07/17:213436SBL CCV mg/L 80.00 88.9% 80-120 8270C 09/08/17:213547SBL CCV mg/L 80.00, 88.6% 80-120 ,3,4,6-Tetrachlorophenol 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 8270C 09/08/17:213547SBL CCV mg/L 40.00 110% 70-130 ,4,5-Trichlorophenol 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 8270C 09/07/17:213436SBL CCV mg/L 80.00 112% 70-130 8270C 09/08/17:213547SBL CCV mg/L 80.00 107% 70-130 2,4,6-Tribromophenol 8270C 08/22/17:210027caa Blank mg/kg 10.00 81.2% 0-129 LCS mg/kg 10.00 83.1% 0-129 MS mg/kg 10.00 86.5% N/A (STK1750351-001) MSD mg/kg 10.00 80.9% N/A MSRPD mg/kg 10.00 6.7% <15 8270C 09/07/17:213436SBL CCV mg/L 200.0 102% 70-130 8270C 09/08/17:213547SBL CCV mg/L 200.0 100% 70-130 2,4,6-Trichlorophenol 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 8270C 09/07/17:213436SBL CCV mg/L 80.00 111% 80-120 8270C 09/08/17:213547SBL CCV mg/L 80.00 110% 80-120 ,4-Dichlorophenol 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 8270C 09/07/17:213436SBL CCV mg/L 80.00 113% 80-120 8270C 09/08/17:213547SBL CCV mg/L 80.00 114% 80-120 2,4-Dimethylphenol 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 8270C 09/07/17:213436SBL CCV mg/L 80.00 94.1% 70-130 8270C 09/08/17:213547SBL CCV mg/L 80.00 97.3% 70-130 ,4-Dinitrophenol 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 8270C 09/07/17:213436SBL CCV mg/L 80.00 108% 70-130 8270C 09/08/17:213547SBL CCV mg/L 80.00 103% 70-130 ,4-Dinitrotoluene 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 LCS mg/kg 2.500 86.0% 28-139 MS mg/kg 2.500 81.5% 0-112 (STK1750351-001) MSD mg/kg 2.500 77.1% 0-112 MSRPD mg/kg 10.00 5.6% <1 435 8270C 09/07/17:213436SBL CCV I mg/L 1 80.00 1 111% 70-130 8270C 09/08/17:213547SBL I CCV mg/L 80.00 110% 70-130 Page 38 of 44 September 21, 2017 Lab ID : SP 1710078 South Tahoe Public Utility District Customer : 2-11369 Quality Control-Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 2,6-Dinitrotoluene 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 8270C 09/07/17:213436SBL CCV mg/L 80.00 117% 70-130 8270C 09/08/17:213547SBL CCV mg/L 80.00 116% 70-130 2-Chlorophenol 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 LCS mg/kg 5.000 60.8% 27-150 MS mg/kg 5.000 59.4% 0-113 (STK1750351-001) MSD mg/kg 5.000 65.8% 0-113 MSRPD mg/kg 10.00 10.3% <15 8270C 09/07/17:213436SBL CCV mg/L 80.00 96.0% 70-130 8270C 09/08/17:213547SBL CCV mg/L 80.00 96.5% 70-130 2-Fluorobiphenyl 8270C 08/22/17:210027caa Blank mg/kg 5.000 61.7% 0-106 LCS mg/kg 5.000 62.1% 0-106 MS mg/kg 5.000 67.4% N/A (STK1750351-001) MSD mg/kg 5.000 66.1% N/A MSRPD mg/kg 10.00 2.0% <1 435 8270C 09/07/17:213436SBL CCV mg/L 100.0 97.3% 70-130 8270C 09/08/17:213547SBL CCV mg/L 100.0 95.1% 70-130 2-Fluorophenol 8270C 08/22/17:210027caa Blank mg/kg 10.00 52.8% 0-115 LCS mg/kg 10.00 53.4% 0-115 MS mg/kg 10.00 52.0% N/A (STK1750351-001) MSD mg/kg 10.00 57.8% N/A MSRPD mg/kg 10.00 10.6% 520 8270C 09/07/17:213436SBL CCV mg/L 200.0 91.3% 70-130 8270C 09/08/17:213547SBL CCV mg/L 200.0 88.9% 70-130 -Methylnaphthalene 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 8270C 09/07/17:213436SBL CCV mg/L 80.00 98.8% 50-150 8270C 09/08/17:213547SBL CCV mg/L 80.00 102% 50-150 -Methylphenol 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 8270C 09/07/17:213436SBL CCV mg/L 80.00 96.5% 70-130 8270C 09/08/17:213547SBL CCV mg/L 80.00 101% 70-130 Nitroaniline 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 8270C 09/07/17:213436SBL CCV mg/L 80.00 103% 50-150 8270C 09/08/17:213547SBL CCV mg/L 80.00 104% 50-150 -Nitrophenol 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 8270C 09/07/17:213436SBL CCV mg/L 80.00 104% 80-120 8270C 09/08/17:213547SBL CCV mg/L 80.00 107% 80-120 3,3-Dichlorobenzidine 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 8270C 09/07/17:213436SBL CCV mg/L 80.00 111% 50-150 8270C 09/08/17:213547SBL CCV mg/L 80.00 111% 50-150 3-Nitroaniline 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 8270C 09/07/17:213436SBL CCV mg/L 80.00 104% 50-150 8270C 09/08/17:213547SBL CCV mg/L 80:00 102% 50-150 ,6-131nitro-2-methylphenol 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 ,6-13initro-o-cresol 8270C 09/07/17:213436SBL CCV mg/L 80.00 107% 70-130 8270C 09/08/17:213547SBL CCV mg/L 80.00 98.8% 70-130 -Bromophenylphenylether 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 8270C 09/07/17:213436SBL CCV mg/L 80.00 95.6% 70-130 8270C 09/08/17:213547SBL CCV mg/L 80.00 94.2% 70-130 -Chloro-3-methylphenol 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 LCS mg/kg 5.000 79.8% 29-144 MS mg/kg 5.000 87.2% 0-120 (STK1750351-001) MSD mg/kg 5.000 86.8% 0-120 MSRPD mg/kg 1 10.00 0.5% <2 -Chloroaniline 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 Page 39 of 44 September 21, 2017 Lab ID : SP 1710078 South Tahoe Public Utility District Customer : 2-113 69 Quality Control- Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic -Chloroaniline 8270C 09/07/17:213436SBL CCV mg/L 80.00 97.6% 50-150 8270C 09/08/17:213547SBL CCV mg/L 80.00 100% 50-150 -Methylphenol 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 8270C 09/07/17:213436SBL CCV mg/L 80.00 96.5% 70-130 8270C 09/08/17:213547SBL CCV mg/L 80.00 98.8% 70-130 -Nitroaniline 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 8270C 09/07/17:213436SBL CCV mg/L 80.00 113% 50-150 8270C 09/08/17:213547SBL CCV mg/L 80.00 110% 50-150 -Nitrophenol 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 LCS mg/kg 5.000 89.9% 39-186 MS mg/kg 5.000 90.7% 0-122 (STK1750351-001) MSD mg/kg 5.000 82.6% 0-122 MSRPD mg/kg 10.00 9.4% <3 435 8270C 09/07/17:213436SBL CCV mg/L 80.00 105% 70-130 8270C 09/08/17:213547SBL CCV mg/L 80.00 107% 70-130 Acenaphthene 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 LCS mg/kg 2.500 69.4% 35-139 MS mg/kg 2.500 75.7% 0-108 (STK1750351-001) MSD mg/kg 2.500 74.0% 0-108 MSRPD mg/kg 10.00 2.2% <1 435 8270C 09/07/17:2134360L CCV mg/L 80.00 97.2% 80-120 8270C 09/08/17:213547SBL CCV mg/L 80.00 95.2% 80-120 cenaphthylene 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 8270C 09/07/17:213436SBL CCV mg/L 80.00 95.6% 70-130 8270C 09/08/17:213547SBL CCV mg/L 80.00 94.6% 70-130 Aniline 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 8270C 09/07/17:213436SBL CCV mg/L 80.00 93.3% 50-150 8270C 09/08/17:213547SBL CCV mg/L 80.00 95.4% 50-150 thracene 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 8270C 09/07/17:213436SBL CCV mg/L 80.00 85.1% 70-130 8270C 09/08/17:213547SBL CCV mg/L 80.00 86.2% 70-130 obenzene 8270C 09/07/17:213436SBL CCV mg/L 80.00 87.2% 70-130 8270C 09/08/17:213547SBL CCV mg/L 80.00 87.9% 70-130 Benzidine 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 8270C 09/07/17:213436SBL CCV mg/L 80.00 87.2% 50-150 8270C 09/08/17:213547SBL CCV mg/L 80.00 88.9% 50-150 enzo(a)anthracene 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 8270C 09/07/17:213436SBL CCV mg/L 80.00 95.5% 70-130 8270C 09/08/17:213547SBL CCV mg/L 80.00 95.4% 70-130 Benzo(a)pyrene 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 8270C 09/07/17:213436SBL CCV mg/L 80.00 95.4% 80-120 8270C 09/08/17:213547SBL CCV mg/L 80.00 92.9% 80-120 Benzo(b)fluoranthene 8270C 08/22/17:210027caa Blank mg/kg ND' <0.1 8270C 09/07/17:213436SBL CCV mg/L 80.00 92.9% 70-130 8270C 09/08/17:213547SBL CCV mg/L 80.00 93.1% 70-130 enzo(g,h,i)perylene 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 8270C 09/07/17:213436SBL CCV mg/L 80.00 93.2% 70-130 8270C 09/08/17:213547SBL CCV mg/L 80.00 85.1% 70-130 enzo(k)fluoranthene 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 8270C 09/07/17:213436SBL CCV mg/L 80.00 94.3% 70-130 8270C 09/08/17:213547SBL CCV mg/L 80.00 89.0% 70-130 Benzoic Acid 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 8270C 09/07/17:213436SBL I CCV I mg/L 80.00 104% 70-130 Page 40 of 44 September 21, 2017 Lab ID : SP 1710078 South Tahoe Public Utility District Customer : 2-11369 Quality Control-Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Benzoic Acid 8270C 09/08/17:213547SBL CCV mg/L 80.00 108% 70-130 Benzylalcohol 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 8270C 09/07/17:213436SBL CCV mg/L 80.00 91.1% 70-130 8270C 09/08/17:213547SBL CCV mg/L 80.00 97.3% 70-130 is(2-Chloroethoxy)methane 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 8270C 09/07/17:213436SBL CCV mg/L 80.00 96.7% 70-130 8270C 09/08/17:213547SBL CCV mg/L 80.00 98.6% 70-130 i s(2-Chloroethyl)ether 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 8270C 09/07/17:213436SBL CCV mg/L 80.00 96.4% 70-130 8270C 09/08/17:213547SBL CCV mg/L 80.00 93.2% 70-130 is(2-Chloroisopropyl)ether 8270C 08/22/17:210027caa Blank mg/kg ND <0:1 8270C 09/07/17:213436SBL CCV mg/L 80.00 78.7% 70-130 8270C 09/08/17:213547SBL CCV mg/L 80.00 80.0% 70-130 is(2-Ethylhexyl)phthalate 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 8270C 09/07/17:213436SBL CCV mg/L 80.00 89.9% 70-130 8270C 09/08/17:213547SBL CCV mg/L 80.00 91.0% 70-130 Butylbenzylphthalate 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 8270C 09/07/17:213436SBL CCV mg/L 80.00 90.8% 70-130 8270C 09/08/17:213547SBL CCV mg/L 80.00 93.0% 70430 Chloronaphthalene 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 8270C 09/07/17:213436SBL CCV mg/L 80.00 100% 70-130 8270C 09/08/17:213547SBL CCV mg/L 80.00 99.2% 70-130 Chlorophenylphenylether 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 8270C 09/07/17:213436SBL CCV mg/L 80.00 103% 70-130 8270C 09/08/17:213547SBL CCV mg/L 80.00 100% 70-130 Chrysene 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 8270C 09/07/17:213436SBL CCV mg/L 80.00 92.1% 70-130 8270C 09/08/17:213547SBL CCV mg/L 80.00 91.4% 70-130 Dibenzo(a,h)anthracene 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 8270C 09/07/17:213436SBL CCV mg/L 80.00 98.0% 70-130 8270C 09/08/17:213547SBL CCV mg/L 80.00 88.9% 70-130 Dibenzofuran 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 8270C 09/07/17:213436SBL CCV mg/L 80.00 102% 50-150 8270C 09/08/17:213547SBL CCV mg/L 80.00 101% 50-150 Diethylphthalate 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 8270C 09/07/17:213436SBL CCV mg/L 80.00 97.8% 70-130 8270C 09/08/17:213547SBL CCV mg/L 80.00 94.7% 70-130 Dimethylphthalate 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 8270C 09/07/17:213436SBL CCV mg/L 80.00 102% 70-130 8270C 09/08/17:213547SBL CCV mg/L 80.00 102% 70-130 Di-n-butylphthalate 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 8270C 09/07/17:213436SBL CCV mg/L 80.00 97.5% 70-130 8270C 09/08/17:213547SBL CCV mg/L 80.00 97.3% 70-130 Di-n-octylphthalate 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 8270C 09/07/17:213436SBL CCV mg/L 80.00 88.2% 80-120 8270C 09/08/17:213547SBL CCV mg/L 80.00 88.3% 80-120 Fluoranthene 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 8270C 09/07/17:213436SBL CCV mg/L 80.00 88.7% 80-120 8270C 09/08/17:213547SBL CCV mg/L 80.00 86.8% 80-120 luorene 8270C 08/22/17:210027caa Blank mg/kg ND. <0.1 8270C 09/07/17:213436SBL CCV mg/L 80.00 99.3% 70-130 8270C 09/08/17:213547SBL CCV mg/L 80.00 98.2% 70-130 exachlorobenzene 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 Page 41 of 44 September 21,2017 Lab ID : SP 1710078 South Tahoe Public Utility District Customer : 2-11369 Quality Control-Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Hexachlorobenzene 8270C 09/07/17:213436SBL CCV mg/L 80.00 96.9% 70-130 8270C 09/08/17:213547SBL CCV mg/L 80.00 93.4% 70-130 Hexachlorobutadiene 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 8270C 09/07/17:213436SBL CCV mg/L 80.00 99.9% 80-120 8270C 09/08/17:213547SBL CCV mg/L 80.00 97.8% 80-120 exachlorocyclopentadiene 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 8270C 09/07/17:213436SBL CCV mg/L 80.00 110% 70-130 8270C 09/08/17:213547SBL CCV mg/L 80.00 103% 70-130 exachloroethane 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 8270C 09/07/17:213436SBL CCV mg/L 80.00 90.5% 70-130 8270C 09/08/17:213547SBL CCV mg/L 80.00 90.8% 70430 Indeno(1,2,3-c,d)pyrene 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 8270C 09/07/17:213436SBL CCV mg/L 80.00 102% 70-130 8270C 09/08/17:213547SBL CCV mg/L 80.00 89.3% 70-130 Isophorone 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 8270C 09/07/17:213436SBL CCV mg/L 80.00 98.1% 70-130 8270C 09/08/17:213547SBL CCV mg/L 80.00 99.0% 70-130 Naphthalene 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 8270C 09/07/17:213436SBL CCV mg/L 80.00 99.3% 70-130 8270C 09/08/17:213547SBL CCV mg/L 80.00 100% 70-130 Nitrobenzene 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 8270C 09/07/17:213436SBL CCV mg/L 80.00 102% 70-130 8270C 09/08/17:213547SBL CCV mg/L 80.00 101% 70-130 Nitrobenzene-d5 8270C 08/22/17:210027caa Blank mg/kg 5.000 59.3% 0-151 LCS mg/kg 5.000 60.4% 0-151 MS mg/kg 5.000 56.6% N/A (STK1750351-001) MSD mg/kg 5.000 61.7% N/A MSRPD mg/kg 10.00 8.7% <0 435 8270C 09/07/17:213436SBL CCV mg/L 100.0 100% 70-130 8270C 09/08/17:213547SBL CCV mg/L 100.0 99.7% 70-130 -Nitrosodimethylamine 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 8270C 09/07/17:213436SBL CCV mg/L 80.00 98.9% 70-130 8270C 09/08/17:213547SBL CCV mg/L 80.00 98.1% 70-130 -Nitrosodi-N-propylamine 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 LCS mg/kg 2.500 58.9% 25-149 MS mg/kg 2.500 57.2% 0-154 (STK1750351-001) MSD mg/kg 2.500 64.0% 0-154 MSRPD mg/kg 10.00 11.3% <4 435 8270C 09/07/17:213436SBL CCV mg/L 80.00 90.4% 70-130 8270C 09/08/17:213547SBL CCV mg/L 80.00 94.4% 70-130 -Nitrosodiphenylamine 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 8270C 09/07/17:213436SBL CCV mg/L 80.00 101% 80-120 8270C 09/08/17:213547SBL CCV mg/L 80.00 112% 80-120 -Chloro-m-cresol 8270C 09/07/17:213436SBL CCV mg/L 80.00 101% 80-120 8270C 09/08/17:213547SBL CCV mg/L 80.00 104% 80-120 entachlorophenol 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 LCS mg/kg 5.000 88.9% 60-140 MS mg/kg 5.000 83.6% 0-113 (STK1750351-001) MSD mg/kg 5.000 78.9% 0-113 MSRPD mg/kg 10.00 5.8% 52 435 8270C 09/07/17:213436SBL CCV mg/L 80.00 105% 80-120 8270C 09/08/17:213547SBL CCV mg/L 80.00 102% 80-120 henanthrene 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 8270C 09/07/17:213436SBL I CCV mg/L 1 80.00 1 87.0% 70-130 Page 42 of 44 September 21, 2017 Lab ID : SP 1710078 South Tahoe Public Utility District Customer : 2-11369 Quality Control-Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Phenanthrene 8270C 09/08/17:213547SBL CCV mg/L 80.00 85.0% 70-130 Phenol 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 LCS mg/kg 5.000 61.3% 22-165 MS mg/kg 5.000 62.3% 0-125 (STK1750351-001) MSD mg/kg 5.000 66.1% 0-125 MSRPD mg/kg 10.00 5.9% <17 8270C 09/07/17:213436SBL CCV mg/L 80.00 89.2% 80-120 8270C 09/08/17:213547SBL CCV mg/L 80.00 89.7% 80-120 Phenol-& 8270C 08/22/17:210027caa Blank mg/kg 10.00 60.2% 0-124 LCS mg/kg 10.00 59.9% 0-124 MS mg/kg 10.00 62.7% N/A (STK1750351-001) MSD mg/kg 10.00 65.3% N/A MSRPD mg/kg 10.00 4.1% <16 8270C 09/07/17:213436SBL CCV mg/L 200.0 93.1% 70-130 8270C 09/08/17:213547SBL CCV mg/L 200.0 93.5% 70-130 -Terphenyl-d14 8270C 08/22/17:210027caa Blank mg/kg 5.000 79.6% 0-101 LCS mg/kg 5.000 80.2% 0-101 MS mg/kg 5.000 82.9% N/A (STK1750351-001) MSD mg/kg 5.000 86.8% N/A MSRPD mg/kg 10.00 4.6% <0 435 8270C 09/07/17:213436SBL CCV mg/L 100.0 92.7% 70-130 8270C 09/08/17:213547SBL CCV mg/L 100.0 92.3% 70-130 yrene 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 LCS mg/kg 2.500 80.2% 54-133 MS mg/kg 2.500 81.6% 0-135 (STK1750351-001) MSD mg/kg 2.500 85.2% 0-135 MSRPD mg/kg 10.00 4.3% <14 8270C 09/07/17:213436SBL CCV mg/L 80.00 87.7% 70-130 8270C 09/08/17:213547SBL CCV mg/L 80.00 87.8% 70-130 Pyridine 8270C 08/22/17:210027caa Blank mg/kg ND <0.1 8270C 09/07/17:213436SBL CCV mg/L 80.00 101% 70-130 8270C 09/08/17:213547SBL CCV mg/L 80.00 104% t 70-130 Definition CCV :Continuing Calibration Verification-Analyzed to verify the instrument calibration is within criteria. Blank :Method Blank-Prepared to verify that the preparation process is not contributing contamination to the samples. ExBlk :TCLP/STLC Extraction Blank-Prepared to verify that the preparation process is not contributing contamination to the samples. LCS :Laboratory Control Standard/Sample-Prepared to verify that the preparation process is not affecting analyte recovery. MS :Matrix Spikes-A random sample is spiked with a known amount of analyte.The recoveries are an indication of how that sample matrix affects analyte recovery. MSD :Matrix Spike Duplicate of MS/MSD pair-A random sample duplicate is spiked with a known amount of analyted.The recoveries are an indication of how that sample matrix affects analyte recovery. BS :Blank Spikes-A blank is spiked with a known amount of analyte.It is prepared to verify that the preparation process is not affecting analyte recovery. BSD :Blank Spike Duplicate of BS/BSD pair-A blank duplicate is spiked with a known amount of analyte.It is prepared to verify that the preparation process is not affecting analyte recovery. MSRPD :MS/MSD Relative Percent Difference(RPD)-The MS relative percent difference is an indication of precision for the preparation and analysis. BSRPD :BS/BSD Relative Percent Difference(RPD)-The BS relative percent difference is an indication of precision for the preparation and analysis. ND :Non-detect-Result was below the DQO listed for the analyte. DQO :Data Quality Objective-This is the criteria against which the quality control data is compared. Explanation 330 :The LCS was out of acceptance limits.Results may be biased high. 355 :CCV not within Acceptance Range(AR).Results were reported with client approval. Page 43 of 44 September 21, 2017 Lab ID : SP 1710078 South Tahoe Public Utility District Customer : 2-11369 Quality Control- Organic Explanation 360 :CCV above Acceptance Range(AR).Samples which were non detect for this analyte were accepted. 410 :Relative Percent Difference(RPD)not within Maximum Allowable Value(MAV).Data was accepted based on the LCS or CCV recovery. 435 :Sample matrix may be affecting this analyte.Data was accepted based on the LCS or CCV recovery. 436 :Blank Spike(BS)not within Acceptance Range(AR).Data was accepted based on the LCS or CCV recovery. Page 44 of 44 SOUTH TAHOE PUBLIC UTILITY DISTRICT CHAIN OF CUSTODY .'^• .. S••rr'iffri.•�'ri rxi rir}, �}yrrrr{rr •iffi}Y rr <4.,vf�S:,wf�Sf#'J„ •.r;f7,^�!'S:fr'r%/fr'r:fff f:lr"rrr f`'•'' f#,f::ff South Tahoe Public Utility District �#sf�:g;-L�,,r Kf#s# :r fi''' '',' fff f {'."'�#1`;r}$"j%` Tumaround Tim tY o�. .. Lab Sent to: s �1275 Meadow Crest Drive .: F&L = '' '�t "}r""r s'f';` sr• ';:; South Lake Tafioe,CA 96150 Standard Phone:(530)-543-6231 '�•...,,,.:�•�'` pler: �'� Q FAX: 530-541-4296 r r.elidl1 24 Hr .Sfr_S4'%T}inF }y 4YY i rrr N !Q 48 Hr .f'r,„"'�: ri �r'S'# S< '�•f�f.'.'rrr'r'7 ' r� S�,£''S"' fC^''`�; `.1 Y SS f f r�'r��'�r}��u.'�/.� r� .S 1•:�'�rf.,,.�^fY; d [ A 'fly srl'ris, Other s r,s Y 'rvr s �,£�„sf,' #,:k#.;, /iY�fSss• ffs ', rr �,.�,.. `) �,#r,l##§S##sue a�'?;s�:s;r;ss..s},ss;:. ;/• sip � /,{� f„ �. ;� s � #'f ;: ���rc�# p.- .i,,,� �srr,'s,�,'''f r ss#frrrr",s>,'. 'frx'S.#ESSS"S'fy f• iv r ��f t'! f��� r'Y!/v'Sr �� w f #' {f.'f' rr ^rr ' f + S /` S"S' ':�S%, ,: /,.G yrS}'Y'i^SSfrf; „rim' '' �3ii# #r.•r i ry{r,. �e , `` 0 ## s:,���C•r#�ssC�{yy}:s;��rry�'#:�'y•/ r .,���'.,•s!�;¢ .csf�ss:"' ".�i.'•r�s' �.,lt !" .�1 �.l 1� ,.'/ssss;�,;r; �;ri'�::�,f�,�/ii #' #f x fC ,' SSrS'fSS 'Yi Y iS Y,w y' i f #S Ai frr�r :4 f7.M'�1•:fir�rSSi## 6rrQ1a a ' C( Lyt� cv Cue L — '6F-644 d4r 46CIVto ka EV-191-M —j4 0 C 10 tv I I Br Ce k Cu i e...,C - 01 Comments: Relinquished by: Received by: ❑ Report MTBE to 0.5 µg/L Note any detection of MTSE a 0.2 µg/L o Analyze Travel and Field Blanks only if VOCs detected in samples. Signature Signature o Use Callf State Write-On f rm to r port resu f Potable Water Wells Print Print ,,, Company South Tahoe Pub'fic 1Utilitv District Company Please Return all STPUD Ice chests&Blue Ice. Date: — Time Date: Time MOM ..... f:.. Relinquished by Received I*q Received Intact Signature Signature Received cold Print Print Custody seals Company Company Date: Time Date: Time Correct container I IN kjLj--*�f goo leblFortnglChain of Custody.doc r ( - ` � � � �<� t� Page of «l�J t�/U�jfj 0 Subcontract to Babcock Laboratories, Inc. ap Re Client: Fruit Growers Laboratory,Inc. Address: FGL Environmental,Inc. 853 Corporation St. Santa Paula,CA 93060-3005 Phone: Fax: 3 a a Contact Person: w a x Project Name: SP 1710078-(2-11369) N t7 W ,. o Purchase Order Number. v� v� ; c as Q Sampler(s) Gps y Q w V00 o O Compositor Setup Date: I I Time: I oA W C" a z 0 �. In E =Gn Lab Number: Samp Date Time y •a u a. Num Location Description Sampled Sampled � 8- a cqel p 000 5 Centrifuge Cake 08/15/17 00:00 G Sig 1 Remarks: Relinquished Date: Time: Relinquished Date: Time: Relinquished Date: Time: Received By: Date: Time: Received By: Date: Time: Received By: Date:' Time: Re:AG57585-Centrifuge Cake received on 08/16/2017 SOUTH... Subject: Re:AG57585 -Centrifuge Cake received on 08/16/2017 SOUTH TAHOE PUD From:Vickie Taylor<vickiet@fglinc.com> Date: 08/17/201713:03 To:Terry Powers<tpowers@stpud.dst.ca.us>, "'loginsp@fglinc.com"' <loginsp@fglinc.com>, David Terz<davidt@fglinc.com> Hi Terry,thank you for letting us know. we will watch for these samples to arrive and our Sample Receiving Department will make sure the correct information from the COC is entered into our database and written on the sample. Sincerely, Vickie Taylor ti Vickie Taylor Corporate Office Manager 805-392-2010 www.felinc.com On 08/17/201710:531 Terry Powers wrote: Hi Vickie, You either have or will receive three samples today, on which is our centrifuge cake sample(AG57585)The sample label was erroneously labeled as collected on 08/16/2017.The correct sample date for the centrifuge cake is on the Chain-of-Custody: 08/15/2017. Terry Powers Lab Director South Tahoe Public Utility District 1275 Meadow Crest Drive South Lake Tahoe,CA 96150 Office:530.543.6231 Cell: 530.545.2087 This email message has been delivered safely and archived online by Mimecast. Virus-free.www.ayg.com 1 of 1 08/17/201716:07 FGL Environmental Doc ID:2DO900157_SOP_17.DOC Revision Date: 10/09/14 Page: 1 of 1 Condition Upon Receipt(Attach to COC) Sample Receipt at SP: 1.Number of ice chests/packages received: 2 2• Shipper tracking numbers 770019511336,770019510421 3.Were samples received in a chilled condition? Temps: 3 / 4 4.Surface water(SWTR)bact samples:A sample that has a temperature upon receipt of>10C,whether iced or not, should be flagged unless the time since sample collection has been less than two hours. 5.Do the number of bottles received agree with the Yes No N/A COC? 6.Verify sample date,time,sampler Yes No N/A 7.Were the samples received intact?(i.e. no broken Yes No bottles, leaks,etc.) 8.Were sample custody seals intact? Yes No N/A Sample Verification,Labeling and Distribution: 1.Were all requested analyses understood and Yes No acceptable? 2.Did bottle labels correspond with the client's ID's? Yes No 3.Were all bottles requiring sample preservation Yes No N/A FGL properly preserved? [Exception:Oil&Grease,VOA and CM verified in lab] 4.VOAs checked for Headspace? Yes. No N/A 5.Were all analyses within holding times at time of Yes No receipt? 6.Have rush or project due dates been checked and Yes No N/A accepted? Include a copy of the COC for lab delivery.(Bacti. Inorganics and Radio) Sample Receipt, Login and Verification completed b Reviewed d Digitally signed by Shawn Peck p p g p y: ewe and Peck Title:Sample Receiving Approved By Date:08/24/2017-16:47:53 Discrepency Documentation: Any items above which are"No"or do not meet specifications(i.e.temps)must be resolved. 1. Person Contacted: Phone Number: Initiated By: Date: Problem: Resolution: 2. Person Contacted: Phone Number: Initiated By: Date: Problem: Resolution: (2011369) South Tahoe Public Utility District S P 1710078 S RP-08/24/2017-16:47:53 c7== v ENVIRONMENTAL� Analytical Chemists September 6, 2017 South Tahoe Public Utility District 1275 Meadow Crest Drive South Lake Tahoe, CA 96150 Subject: Subcontract Analysis for FGL Lab No. SP 1710078 Enclosed please find results for the following sample(s) which were received by FGL. • Sub Contracted-EPA 8081 and EPA 8082 Please note that this analysis was performed by Babcock Laboratories, Inc. (ELAP Certified Laboratory) Thank you for using FGL Environmental. Sincerely, Digitally signed by Cindy Aguirre Cindy Aguirre Title:Customer Service Rep Date:2017-09-06 Enclosure Corporate Offices&Laboratory Office&Laboratory Office&Laboratory Office&Laboratory Office&Laboratory 853 Corporation Street 2500 Stagecoach Road 563 E.Lindo Avenue 3442 Empresa Drive,Suite D 9415 W.Goshen Avenue Santa Paula,CA 93060 Stockton,CA 95215 Chico,CA 95926 San Luis Obispo,CA 93401 Visalia,CA 93291 TEL:(805)392-2000 TEL:(209)942-0182 TEL:(530)343-5818 TEL:(805)783-2940 TEL:(559)734-9473 Env FAX:(805)525-4172/Ag FAX:(805)392-2063 FAX:(209)942-0423 FAX:(530)343-3807 FAX:(805).783-2912 FAX:(559)734-8435 CA ELAP Certification No.1573 CA ELAP Certification No.1563 CA ELAP Certification No.2670 CA ELAP Certification No.2775 CA ELAP Certification No.2810 BABCOCK Laboratories, Inc. 77ie Standard of Excellencefir Over 1001`ears Client Name: FGL Environmental, Inc. Analytical Report: Page 1 of 11 Contact: Cindy Aguirre Project Name: No Project Address: 853 Corporation Street Project Number: SP 1710078-(2-11369) Santa Paula,CA 93060 Work Order Number: B7H1912 Report Date: 31-Aug-2017 Received on Ice(Y/N): Yes Temp: 8 °C Attached is the analytical report for the sample(s) received for your project. Below is a list of the individual sample descriptions with the corresponding laboratory number(s).Also, enclosed is a copy of the Chain of Custody document(if received with your sample(s)). Please note any unused portion of the sample(s) may be responsibly discarded after 30 days from the above report date, unless you have requested otherwise. Thank you for the opportunity to serve your analytical needs. If you have any questions or concerns regarding this report please contact our client service department. Sample Identification Lab Sample# Client Sample ID Matrix Date Sampled By Date Submitted B7H1912-01 Centrifuge Cake Grab Sludge 08/15/17 0:00 Ops 08/18/17 08:52 Courier(GSO) mailing location P 951 653 3351 CA ELAP No.2698 P.O Box 432 6100 Quail Valley Court F 951 653 1662 EPA No.CA00102 Riverside,CA 92502-0432 Riverside,CA 92507-0704 www.babcocklabs.com NELAP No.OR4035 LACSD No.10119 BABCOCK Laboratories, Inc. 77ie Standard of Excellence for Over.100 Years Client Name: FGL Environmental, Inc. Analytical Report: Page 2 of 11 Contact: Cindy Aguirre Project Name: No Project Address: 853 Corporation Street Project Number: SP 1710078-(2-11369) Santa Paula,CA 93060 Report Date: 31-Aug-2017 Work Order Number: B7H1912 Received on Ice(Y/N): Yes Temp: 8 °C Laboratory Reference Number B7H1912-01 Sample Description Matrix Sampled Date/Time Received Date/Time Centrifuge Cake Sludge 08/15/17 00:00 08/18/17 8:52 Analyte(s) Result RDL Units Method Analysis Date Analyst Flag Solids Total Solids 28 0.10 % SM 2540G 08/21/17 17:10 DNF Organochlorine Pesticides and PCBs by EPA 8000 Series N_RLm 4,4'-DDD ND 400 ug/kg dry EPA 8081A 08/29/17 14:04 SS NCALhND 4,4'-DDE ND 290 ug/kg dry EPA 8081A 08/29/17 14:04 SS 4,4'-DDT ND 430 ug/kg dry EPA 8081A 08/29/17 14:04 SS NMint, NCALlm a-BHC ND 360 ug/kg dry EPA 8081A 08/29/17 14:04 SS Aldrin ND 220 ug/kg dry EPA 8081A 08/29/17 14:04 SS b-BHC ND 360 ug/kg dry EPA 8081A 08/29/17 14:04 SS Chlordane ND 2700 ug/kg dry EPA 8081A 08/29/17 14:04 SS 'd-BHC ND 720 ug/kg dry EPA 8081A 08/29/17 14:04 SS NMint Dieldrin ND 290 ug/kg dry EPA 8081A 08/29/17 14:04 SS Endosulfan I ND 290 ug/kg dry EPA 8081A 08/29/17 14:04 SS Endosulfan II ND 430 ug/kg dry EPA 8081A 08/29/17 14:04 SS Endosulfan Sulfate ND 1000 ug/kg dry EPA 8081A 08/29/17 14:04 SS NCALim Endrin ND 290 ug/kg dry EPA 8081A 08/29/17 14:04 SS Endrin Aldehyde ND 720 ug/kg dry EPA 8081A 08/29/17 14:04 SS NMint, NCALIm Heptachlor ND 250 ug/kg dry EPA 8081A 08/29/17 14:04 SS NMint Heptachlor Epoxide ND 290 ug/kg dry EPA 8081A 08/29/17 14:04 SS Hexachlorobenzene ND 3600 ug/kg dry EPA 8081A 08/29/17 14:04 SS Lindane ND 470 ug/kg dry EPA 8081A 08/29/17 14:04 SS Methoxychlor ND 2900 ug/kg dry EPA 8081A 08/29/17 14:04 SS NCALhND Toxaphene ND 9000 ug/kg dry EPA 8081A 08/29/17 14:04 SS Aroclor 1016 ND 36000 ug/kg dry EPA 8082 08/28/17 13:56 SS N_RLm Aroclor 1221 ND 36000 ug/kg dry EPA 8082 08/28/17 13:56 SS N_RLm Aroclor 1232 ND 36000 ug/kg dry EPA 8082 08/28/17 13:56 SS N_RLm Aroclor 1242 ND 36000 ug/kg dry EPA 8082 08/28/17 13:56 SS N_RLm Aroclor 1248 ND 36000 ug/kg dry EPA 8082 08/28/17 13:56 SS N_RLm Aroclor 1254 ND 36000 ug/kg dry EPA 8082 08/28/17 13:56 SS N_RLm Aroclor 1260 ND 36000 ug/kg dry EPA 8082 08/28/17 13:56 SS N_RLm mailing location P 951 653 3351 CA ELAP No.2698 P.O Box 432 6100 Quail Valley Court F 951 653 1662 EPA No.CA00102 Riverside,CA 92502-0432 Riverside,CA 92507-0704 www.babcocklabs.com NELAP No.OR4035 LACSD No.10119 BABCOCK Laboratories, Inc. The Standard of'Ercellence for Over.100 ears Client Name: FGL Environmental, Inc. Analytical Report: Page 3 of 11 Contact: Cindy Aguirre Project Name: No Project Address: 853 Corporation Street Project Number: SP 1710078-(2-11369) Santa Paula,CA 93060 Work Order Number: B7H1912 Report Date: 31-Aug-2017 Received on Ice(Y/N): Yes Temp: 8 °C Laboratory Reference Number B7 H 1912-01 Sample Description Matrix Sampled Date/Time Received Date/Time Centrifuge Cake Sludge 08/15/17 00:00 08/18/17 8:52 Analyte(s) Result RDL Units Method Analysis Date Analyst Flag Organochlorine Pesticides and PCBs by EPA 8000 Series Surrogate:Decachlorobiphenyl 179 % 10-169 EPA 8081A 08/29/17 14:04 SS NSdil Surrogate:Decachlorobiphenyl 123 pro 10-158 EPA 8082 08/28/17 13:56 SS N RLm mailing location P 951 653 3351 CA ELAP No.2698 P.O Box 432 6100 Quail Valley Court F 951 653 1662 EPA No.CA00102 Riverside,CA 92502-0432 Riverside,CA 92507-0704 www.babcocklabs.com NELAP No.OR4035 LACSD No.10119 BABCOCK Laboratories, Inc. The Strcndard of Excellence for Over 1001 ears Client Name: FGL Environmental, Inc. Analytical Report: Page 4 of 11 Contact: Cindy Aguirre Project Name: No Project Address: 853 Corporation Street Project Number: SP 1710078-(2-11369) Santa Paula,CA 93060 Work Order Number: B7H1912 Report Date: 31-Aug-2017 Received on Ice(Y/N): Yes Temp: 8 °C Solids-Batch Quality Control Spike Source %REC RPD Analyte(s) Result RDL Units Level Result %REC Limits RPD Limit Flag Batch 7H21112-Analyzed as received Blank(7H21112-BLK1) Prepared&Analyzed:08/21/17 Total Solids ND 0.10 % Duplicate(7H21112-DUP1) Source:B71-11982-02 Prepared&Analyzed:08/21/17 Total Solids 3.0 0.10 % 3.0 0.328 25 Duplicate(7H21112-DUP2) Source:137H1982-07 Prepared&Analyzed:08/21/17 Total Solids 10.8 0.10 % 9.4 13.5 25 majhng location P 951 653 3351 CA ELAP No.2698 P.O Box 432 6100 Quail Valley Court F 951 653 1662 EPA No.CA00102 Riverside,CA 92502-0432 Riverside,CA 92507-0704 www.babcocklabs.com NELAP No.OR4035 LACSD No.10119 000 BABCOCK_ Laboratories, Inc. The Standard of'E cellence for Over.100 ears Client Name: FGL Environmental, Inc. Analytical Report: Page 5 of 11 Contact: Cindy Aguirre Project Name: No Project Address: 853 Corporation Street Project Number: SP 1710078-(2-11369) Santa Paula,CA 93060 Work Order Number: B7H1912 Report Date: 31-Aug-2017 Received on Ice(Y/N): Yes Temp: 8 °C Organochlorine Pesticides and PCBs by EPA 8000 Series-Batch Quality Control Spike Source %REC RPD Analyte(s) Result RDL Units Level Result %REC Limits RPD Limit Flag Batch 711-1125024-EPA 3550B Blank(7H25024-BLK1) Prepared:08/25/17 Analyzed:08/28/17 Aroclor 1016 ND 330 ug/kg wet Aroclor 1221 ND 330 ug/kg wet Aroclor 1232 ND 330 ug/kg wet Aroclor 1242 ND 330 ug/kg wet Aroclor 1248 ND 330 ug/kg wet Aroclor 1254 ND 330 ug/kg wet Aroclor 1260 ND 330 ug/kg wet Surrogate: 60.3 ug/kg wet 66.7 90.5 10-158 Decachlorobiphenyl LCS(7H25024-BS1) Prepared:08/25/17 Analyzed:08/28/17 Aroclor 1016 557 330 ug/kg wet 667 83.5 47.8-122 Aroclor 1260 619 330 ug/kg wet 667 92.8 48.3-127 Surrogate: 68.4 ug/kg wet 66.7 103 10-158 Decachlorobiphenyl LCS Dup(71-125024-13S131) Prepared:08/25/17 Analyzed:08/28/17 Aroclor 1016 556 330 ug/kg wet 667 83.5 47.8-122 0.0341 20 Aroclor 1260 638 330 ug/kg wet 667 95.6 48.3-127 3.00 20 Surrogate: 56.1 ug/kg wet 66.7 84.2 10-158 Decachlorobiphenyl Matrix Spike(7H25024-MS1) Source:B7H1910-01 Prepared:08/25/17 Analyzed:08/28/17 Aroclor 1016 8050 12000 ug/kg dry 2340 ND NR 23-195 Wout Aroclor 1260 2190 12000 ug/kg dry 2340 ND 93.3 13.5-134 Surrogate: 329 ug/kg dry 234 140 10-158 Decachlorobiphenyl Matrix Spike-Dup(7H25024-MSD1) Source:137H1910-01 Prepared:08/25/17 Analyzed:08/28/17 Aroclor 1016 9100 12000 ug/kg dry 2340 ND NR 23-195 12.3 42 Wout Aroclor 1260 2540 12000 ug/kg dry 2340 ND 108 13.5-134 15.0 32 i Surrogate: 324 ug/kg dry 234 138 10-158 Decachlorobiphenyl Mailing location P 951 653 3351 CA ELAP No.2698 P.0 Box 432 6100 Quail Valley Court F 951 653 1662 EPA No.CA00102 Riverside,CA 92502-0432 Riverside,CA 92507-0704 www.babcocklabs.com NELAP No.OR4035 LACSD No.10119 BABCOCK Laboratories, Inc. The Standard of Excellencefor Over 100 Iears Client Name: FGL Environmental, Inc. Analytical Report: Page 6 of 11 Contact: Cindy Aguirre Project Name: No Project Address: 853 Corporation Street Project Number: SP 1710078-(2-11369) Santa Paula,CA 93060 Work Order Number: B7H1912 Report Date: 31-Aug-2017 Received on Ice(Y/N): Yes Temp: 8 °C Organochlorine Pesticides and PCBs by EPA 8000 Series-Batch Quality Control Spike Source %REC RPD Analyte(s) Result RDL Units Level Result %REC Limits RPD Limit Flag Batch 71-1128097-EPA 3550B Blank(71-128097-131-K1) Prepared:08/28/17 Analyzed:08/29/17 4,4'-DDD ND 3.7. ug/kg wet 4,4'-DDE ND 2.7 ug/kg wet 4,4'-DDT ND 4.0 ug/kg wet a-BHC ND 3.3 ug/kg wet Aldrin ND 2.0 ug/kg wet b-BHC ND 3.3 ug/kg wet Chlordane ND 25 ug/kg wet d-BHC ND 6.7 ug/kg wet Dieldrin ND 2.7 ug/kg wet Endosulfan I ND 2.7 ug/kg wet Endosulfan II ND 4.0 ug/kg wet Endosulfan Sulfate ND 9.7 ug/kg wet Endrin ND 2.7 ug/kg wet Endrin Aldehyde ND 6.7 ug/kg wet Heptachlor ND 2.3 ug/kg wet Heptachlor Epoxide ND 2.7 ug/kg wet Hexachlorobenzene ND 33 ug/kg wet Lindane ND 4.3 ug/kg wet Methoxychlor ND 26 ug/kg wet Toxaphene ND 83 ug/kg wet Surrogate: 19 ug/kg wet 20.0 93.1 10-169 Decachlorobiphenyl LCS(7H28097-BS1) Prepared:08/28/17 Analyzed:08/29/17 4,4'-DDD 13.2 3.7 ug/kg wet 16.7 79.3 57-118 4,4'-DDE 12.3 2.7 ug/kg wet 16.7 73.9 58-120 4,4'-DDT 11.0 4.0 ug/kg wet 16.7 66.2 41-126 a-BHC 11.4 3.3 ug/kg wet 16.7 68.4 51-97 Aldrin 11.3 2.0 ug/kg wet 16.7 67.9 51-100 b-BHC 12.5 3.3 ug/kg wet 16.7 74.8 50-104 d-BHC 8.27 6.7 ug/kg wet 16.7 49.6 17-74 Dieldrin 11.2 2.7 ug/kg wet 16.7 67.2 55-105 Endosulfan 1 10.5 2.7 ug/kg wet 16.7 63.2 59-97. Endosulfan II 11.5 4.0 ug/kg wet 16.7 68.7 33-101 Endrin 14.8 2.7 ug/kg wet 16.7 88.8 49-130 mailing location P 951 653 3351 CA ELAP No.2698 P.O Box 432 6100 Quail Valley Court F 951 653 1662 EPA No.CA00102 Riverside,CA 92502-0432 Riverside,CA 92507-0704 www.babcocklabs.com NELAP No.OR4035 LACSD No.10119 BABCOCK Laboratories, Inc. 77ie kandard of Excellence for Over 1 DO Fears Client Name: FGL Environmental, Inc. Analytical Report: Page 7 of 11 Contact:, Cindy Aguirre Project Name: No Project Address: 853 Corporation Street Project Number: SP 1710078-(2-11369) Santa Paula, CA 93060 Work Order Number: B7H1912 Report Date: 31-Aug-2017 Received on Ice(Y/N): Yes Temp: 8 °C Organochlorine Pesticides and PCBs by EPA 8000 Series-Batch Quality Control Spike Source %REC RPD Analyte(s) Result RDL Units Level Result %REC Limits RPD Limit Flag Batch 7H28097-EPA 3550B LCS(7H28097-BS1) Prepared:08/28/17 Analyzed:08/29/17 Endrin Aldehyde 9.98 6.7 ug/kg wet 16.7 59.9 14-107 Heptachlor 12.2 2.3 ug/kg wet 16.7 73.1 47-104 Heptachlor Epoxide 12.7 2.7 ug/kg wet 16.7 76.5 52-105 Lindane 11.4 4.3 ug/kg wet 16.7 68.6 51-93 Surrogate: 15 ug/kg wet 20.0 73.4 10-169 Decachlorobiphenyl LCS Dup(7H28097-BSD1) Prepared:08/28/17 Analyzed:08/29/17 4,4'-DDD 12.9 3.7 ug/kg wet 16.7 77.6 57-118 2.26 30 4,4'-DDE 11.9 2.7 ug/kg wet 16.7 71.6 58-120 3.17 30 4,4'-DDT 10.8 4.0 ug/kg wet 16.7 64.5 41-126 2.53 30 a-BHC 10.7 3.3 ug/kg wet 16.7 63.9 51-97 6.75 30 Aldrin 10.2 2.0 ug/kg wet 16.7 61.5 51-100 9.91 30 b-BHC 11.8 3.3 ug/kg wet 16.7 70.9 50-104 5.24 30 d-BHC 7.90 6.7 ug/kg wet 16.7 47.4 17-74 4.61 30 Dieldrin 12.6 2.7 ug/kg wet 16.7 75.3 55-105 11.4 30 Endosulfan 1 11.0 2.7 ug/kg wet 16.7 66.0 59-97 4.41 30 Endosulfan II 11.1 4.0 ug/kg wet 16.7 66.3 33-101 3.54 40 Endrin 14.5 2.7 ug/kg wet 16.7 87.0 49-130 2.03 30 Endrin Aldehyde 9.49 6.7 ug/kg wet 16.7 56.9 14-107 5.07 40 Heptachlor 11.2 2.3 ug/kg wet 16.7 67.0 47-104 8.72 30 Heptachlor Epoxide 12.0 2.7 ug/kg wet 16.7 72.2 52-105 5.67 30 Lindane 10.6 4.3 ug/kg wet 16.7 63.4 51-93 7.87 30 Surrogate: 15 ug/kg wet 20.0 72.7 10-169 Decachlorobiphenyl Matrix Spike(7H28097-MS1) Source:B7H1912-01 Prepared:08/28/17 Analyzed:08/29/17 4,4'-DDD ND 400 ug/kg dry 181 ND 27-155 QMdil,Qraw 4,4'-DDE ND 290 ug/kg dry 181 ND 30-162 QMdil,Qraw 4,4'-DDT ND 430 ug/kg dry 181 ND 10-186 QMdil,QMint a-BHC ND 360 ug/kg dry 181 ND 36-107 QMdil,Qraw Aldrin ND 220 ug/kg dry 181 ND 27-123 QMdil,Qraw b-BHC ND 360 ug/kg dry 181 ND 32-114 QMdil,Qraw d-BHC ND 720 ug/kg dry 181 ND 10-87 QMdil,Qraw Dieldrin ND 290 ug/kg dry 181 ND 41-128 QMdil,Qraw Endosulfan I ND 290 ug/kg dry 181 ND 33-125 QMdil,Qraw mailing location P 951 653 3351 CA ELAP No.2698 P.O Box 432 6100 Quail Valley Court F 951 653 1662 EPA No.CA00102 Riverside,'CA 92502-0432 Riverside,CA 92507-0704 www.babcocklabs.com NELAP No:OR4035 LACSD No.10119 BABCOCK Laboratories, Inc. 71ie.standard of Excellence for Over.100 fears Client Name: FGL Environmental, Inc. Analytical Report: Page 8 of 11 Contact: Cindy Aguirre Project Name: No Project Address: 853 Corporation Street Project Number: SP 1710078-(2-11369) Santa Paula,CA 93060 Work Order Number: B7H1912 Report Date: 31-Aug-2017 Received on Ice(Y/N): Yes Temp: 8 °C Organochlorine Pesticides and PCBs by EPA 8000 Series-Batch Quality Control Spike Source %REC RPD Analyte(s) Result RDL Units Level Result %REC Limits RPD Limit Flag Batch 7H28097-EPA 3550B Matrix Spike(7H28097-MS1) Source:B7H1912-01 Prepared:08/28/17 Analyzed:08/29/17 Endosulfan II ND 430 ug/kg dry 181 ND 16-132 QMdil,Qraw Endrin ND 290 ug/kg dry 181 ND 26-189 QMdil,Qraw Endrin Aldehyde ND 720 ug/kg dry 181 ND 10-119 QMdil,Qraw Heptachlor ND 250 ug/kg dry 181 ND 29-125 QMdil,Qraw Heptachlor Epoxide ND 290 ug/kg dry 181 ND 25-148 QMdil,Qraw Lindane ND 470 ug/kg dry 181 ND 28-116 QMdil,Qraw Surrogate: 230 ug/kg dry 217 108 10-169 Decachlorobiphenyl Matrix Spike Dup(7H28097-MSD1) Source:B7H1912-01 Prepared:08/28/17 Analyzed:08/29/17 4,4'-DDD ND 400 ug/kg dry 181 ND 27-155 40 QMdil,Qraw 4,4'-DDE ND 290 ug/kg dry 181 ND 30-162 30 QMdil,Qraw 4,4'-DDT ND 430 ug/kg dry 181 ND 10-186 40 QMdil, QMint, QRPDo a-BHC ND 360 ug/kg dry 181 ND 36-107 30 QMdil,Qraw Aldrin ND 220 ug/kg dry 181 ND 27-123 30 QMdil,Qraw b-BHC ND 360 ug/kg dry 181 ND 32-114 40 QMdil,Qraw d-BHC ND 720 ug/kg dry 181 ND 10-87 30 QMdil,Qraw, QRPDa Dieldrin ND 290 ug/kg dry 181 ND 41-128 25 QMdil,Qraw Endosulfan I ND 290 ug/kg dry 181 ND 33-125 20 QMdil,Qraw Endosulfan II ND 430 ug/kg dry 181 ND 16-132 30 QMdil,Qraw Endrin ND 290 ug/kg dry 181 ND 26-189 30 QMdil,Qraw Endrin Aldehyde ND 720 ug/kg dry 181 ND 10-119 50 QMdil, QMint, QRPDo Heptachlor ND 250 ug/kg dry 181 ND 29-125 30 QMdil,Qraw, QRPDa Heptachlor Epoxide ND 290 ug/kg dry 181 ND 25-148 40 QMdil,Qraw Lindane ND 470 ug/kg dry 181 ND 28-116 40 QMdil,Qraw Surrogate: 220 ug/kg dry 217 103 10-169 Decachlorobiphenyl mailing location P 951 653 3351 CA ELAP No.2698 P.O Box 432 6100 Quail Valley Court F 951 653 1662 EPA No.CA00102 Riverside,CA 92502-0432 Riverside,CA 92507-0704 www.babcocklabs.com NELAP No.OR4035 LACSD No.10119 BABCOCK Laboratories, Inc. The Standard of'Ercellence for Over.100 Years Client Name: FGL Environmental, Inc. Analytical Report: Page 9 of 11 Contact: Cindy Aguirre Project Name: No Project Address: 853 Corporation Street Project Number: SP 1710078-(2-11369) Santa Paula,CA 93060 Work Order Number: 1371-11912 Report Date: 31-Aug-2017 Received on Ice(Y/N): Yes Temp: 8 °C Notes and Definitions N_RLm Due to sample matrix,the reporting limit has been raised. NCALhNI Calibration Verification recovery was above the method control limit for this analyte. Analyte not detected, therefore data not impacted. NCALIm Calibration Verification recovery was outside method control limits for this analyte due to matrix interference carried over from analytical samples. NMint Due to matrix interference,the matrix spike and/or matrix spike duplicate performed on this sample did not meet laboratory acceptance criteria. NSdil Sample dilution required due to high analyte concentration and/or matrix interference.The'surrogate recovery for this sample is not available. QMdil Due to sample dilution required from high analyte concentration and/or matrix interference,the Matrix Spike recovery for this analyte is not available. QMint Due to matrix interference,the MS and/or MSD did not meet laboratory acceptance criteria. QMout MS and/or MSD recovery did not meet laboratory acceptance criteria. Qraw Based on raw data excluding numerical rounding,QC recovery was within laboratory acceptance criteria. QRPDa Both percent recoveries were acceptable, however,the RP result was above laboratory acceptance criteria. QRPDo The RPD value for the sample duplicate or MS/MSD did not meet laboratory acceptance criteria. ND: Analyte NOT DETECTED at or above the Method Detection Limit(if MDL is reported),otherwise at or above the Reportable Detection Limit(RDL) NR: Not Reported RDL: Reportable Detection Limit MDL: Method Detection Limit /(Non-NELAP): NELAP does not offer accreditation for this analyte/method/matrix combination mailing location P 951 653 3351 CA ELAP No.2698 P.O Box 432 6100 Quail Valley Court F 951 653 1662 EPA No.CA00102 Riverside,CA 92502-0432 Riverside,CA 92507-0704 www.babcocklabs.com NELAP No.OR4035 LACSD No.10119 BABCOCK Laboratories, Inc. 77ic Standard of Excellaicefir Over 100 Years Client Name: FGL Environmental, Inc. Analytical Report: Page 10 of 11 Contact: Cindy Aguirre Project Name: No Project Address: 853 Corporation Street Project Number: SP 1710078-(2-11369) Santa Paula, CA 93060 Work Order Number: B7H1912 Report Date: 31-Aug-2017 Received on Ice(Y/N): Yes Temp: 8 °C i Approval Enclosed are the analytical results for the submitted sample(s). Babcock Laboratories certify the data presented as part of this report meet the minimum quality standards in the referenced analytical methods.Any exceptions have been noted. Nancy H.Boulineau For Cindy A.Waddell cc: e-Standard_No Alias.rpt This report applies only to the sample(s)analyzed.As a mutual protection to clients,the public,and Babcock Laboratories,Inc.,this report is submitted and accepted for the exclusive use of the Client to whom it is addressed.Interpretation and use of the information contained within this report are the sole responsibility of the Client.Babcock Laboratories,Inc.is not responsible for any misinformation or consequences that may result from misinterpretation or improper use of this report.This report is not to be modified or abbreviated in any way. Additionally,this report is not to be used,in whole or in part,in any advertising or publicity matter without written authorization from Babcock Laboratories,Inc.The liability of Babcock Laboratories,Inc.is limited to the actual cost of the requested analyses,unless otherwise agreed upon in writing.There is no other warranty expressed or implied. nailing location P 951 653 3351 CA ELAP No.2698 P.0 Box 432 6100 Quail Valley Court F 951 653 1662 EPA No.CA00102 Riverside,CA 92502-0432 Riverside,CA 92507-0704 www.babcocklabs.com NELAP No.OR4035 LACSD No.10119 BABCOCK Laboratories, Inc. The Standard.of'Et:cellence for Over 100 Years Client Name: FGL Environmental, Inc. Analytical Report: Page 11 of 11 Contact: Cindy Aguirre Project Name: No Project Address: 853 Corporation Street Project Number: SP 1710078-(2-11369) Santa Paula, CA 93060 Report Date: 31-Aug-2017 Work Order Number: IBM 912 Received on Ice(Y/N): Yes Temp: 8 °C S11bcontract to Babcock Laboratories,Inc. i rlap lie Client: Fruit'Cro«ers Laboratorr,'Ine. Andress:FGL.Cavironmenral.Inc. 853 Corporation St. Santa Paula;CA 93060-3005 a' w U Phone: Fax: 3 Contact Person: � a a C7, ua Project Name: SP 1710078-(2-11369) ILI Plfrchase Order Number: O. uWi - W °O u w 3 v 8 > >i a Sampleds) Ops a u1 F n U �. o0 Compositor Setup Date;�1-1� Time:�l 3 57 � z a z o v Lab Number: o c z Sam t Date Time -5 v "v U a, I Location.Description ,� ,°, o �,a lVum Sampled Sampled ,� E- a in M O 2 cA 5 Centrifitge Cake 08/15117 00;00 G Slg 1 Remarks: Relinquis Dat: Tinte; Relinquished Date: Time: Relinquished Dace: Time: ED- I 'H! t> Received Dot: Time: R t eived y: Date: Time: Received By: Date: Time: S. ------------- ..-------._-.._ ___.._-_ :._... -.__...___ _ _................. n2ailing location P 951 653 3351 CA ELAP No.2698 P.O Box 432 6100 Quail Valley Court F 951 653 1662 EPA No.CA00102 Riverside,CA 92502-0432 Riverside,CA 92507-0704 www.babcocklabs.com NELAP No.OR4035 LACSD No.10119 HEAVENLY VALLEY CREEK i EMERGENCY RETENTION BASIN And HEAVENLY VALLEY CREEK MONITORING Monthly monitoring of Heavenly Valley Creek and the monitoring wells were performed throughout 2017. Heavenly Valley Creek is the natural drainage of the areas in which the Emergency Retention Basin (ERB) and Ponds #1'and #2 are located. The monitoring results for Heavenly Valley Creek and treatment plant monitoring wells are tabulated below. Each site is reported with tables showing the monthly results for 2017 and the yearly averages since monitoring was initiated. Monitoring wells for buried sludge was initiated in 1992. The monthly results'for 2017 are reported. T}. +, 4 ^'r ! ` y ♦",S_' - �•tf ` r„, s '#FE '. 4 f #+- i{ a€r S i ,+ • a `i" 'i y�. ,/"s S''i i€i'r•�+ %ii<..+S'9k r i'r if w �Iq' € � �- s - •r. _ �',o`i:♦ l +„ ' `,•' , 1' i'i� !y� */'.+.'°,i w aw r r ,�►• s � .,,L'Al<�.• • •i!A s�` - � ' Kr+ � � ♦`ems+ , +a r +� Y. �'a +K : i ,c: �w(. �,•'kl��, '} ts.� -+ { +. �+ k ,.A; ri� ♦. ,i-' w • A +` � i�r. ,,a , � sr• }. Bj i � i f:. r>+ 'h B � y � i *. •,ry.`e r� '.r". f £+�,�w� 'ry lr� ,£fir 'R '!`•. �� 9� e �a.Rx ._. ,,. - # �+.. .+.- �i -�' �-t---�-. w�< •'�K� --- + �--t s r �S Ti•(<�€- �€ S"X�M'`r„a���f•stl'}'*'��;i�i uV op g Jr • �t _ � -. r V'b °a 1s *.- :. � _L2- _.�.. --�'-�-� --�' _• `k� r, _ i s' A• M'�BF � �. � s.-. ._ r k .. r,,� ��� .s�S. `�*+`�.S.Yr y/ � ..•y ,~i�� ,*"�� �``�� v•,! +,w:w ! :�♦.a+i�t�`..N!•_ .r ,N f: $ -;i. � s � r' �r r sit �' rf ,lye` �,� Ar. ,•'�)+ * �a ' f w'� i�i�' g +f. ;•✓ `i'"� •:,�S w i � iF. _ �► :� S+ ! - �a�� �-- � .:fie �d� ► � y�" •=�1A e.+''°'°� • '�* w "°'s°i i ',9g°•?► ,x` ♦ $ a+.*n + R w ` 1 ='S• ti! $ B '% �+ ' 4� '� r•♦r tq, r` F x'r- .. ., 'sr ' a� a F► ,� `_t+, -f•rr ""` •.'a- � y�} �'t u✓ 4 s' �1<• (• • '.� ,aa�,�,,�r�t ...,-! e' '' if e' y, 4.+.i" ' .•ip '�` /� J€t "�'i» s, ♦.'s ,i g'yy+ •.,,y" a, _� +�'- � -" x._t.., - i �., 'A •.. a• - " � •a is �•ik� �;it 0 * � �' � � �.r - - _ r+ S+ i •F • s § 'r '•�,� s• K '�:j /:.4 `kj+ w°� A`+r#at Ji iw• « A41, > ... ♦. r# rrs •w« a'+�. ^K 5 i .w y.# + „{Y t di♦�g/��' r,,.r i 9R y,`:i fwr r •+ 't.••4 '. yef '''r� .;+v° . t �a a � :rasi�� � ... �}�,�, '�€ F ` .� � { gr 1~•�,'T� �€ «�`� k '� �`-' /,� � .1+ '? ar�. �• ,� �• �•' .. ltr, eV r # ; -a iB€1". :., ,•+ '* '•s y sD,,, e' s!°a K p1 < !�s_i Dr. •r*Y<t a i + �. « a s yg A♦rw i { r sh is .r +Y * Ea i to •.# } , Ar �`� y .. �- <A a � si• a � w# +� a � �°'rs :k - �' y,w d � c 4` a<A• .� ,� �ii K}w �: '€€ `6� r a>�7 dI i > «*« � �; g l�<1.t'►. ss °"lit x ! s r "M.sr r ; it `, .B•« ti =+rr : • '• • �S= ~ •l s!s+ t V+t.YP•tw :"�- � ¢!f I ♦ a •r°A,.. r.' { s "'"� ,r i A'+.' r A► +! t :...,w -0 Slew 7� = a^' :M J9 ',tiB'°'a.y ,4. r +i:+.,• « 'IV ` ��iiyy r f+.,-r�'• � ,,. � .. ^'.!, a ..�,t• t• �s,.R i4�. >•*,* �"'"�„i�.,��r .r� � g s 1 a K „e •-� +r�r'w ,�,, :P.2" • ' ' ""`b., ;4 c c t ,tt _ y {_ `#. +s 'i � J �` dt ,S,a y„Z t yi"}'°'... + t; �+. s+e^°'r t £ s �"s•` i^ ti a r i �a.�'.� ,r'.$ 't'. + -:YS:a�:� . " � `, .rt�::- S i. >t i !�.'� _ - +t a .�•' :dB.4 r ,',�..t' „'� �', +f i"!",• �'� „� ... + ..w � t "' .:.<" v r i+ .�' a:rt .. t'pr« , +j+a`At: ! s!t r,:.:� �,�.�s `' � '' ':j� �'*w♦w* ev 1 x � .: s :,.: ,„, . .,!I ; �{� i#��/'-� is :� °�z f> #♦ € �= I ai' :�a rt T �� r � + .,r � :�, �k-a..�tac-v6 y� .'-.t ;4.'.r t.'"4"Sr' w }'.. r < < `'ti '# t , $ S`` t ,..'" , r�s •f *• r - xYw °„fie..,rf,.+5. "�Is•"a ' K +.«#P '- t s + .g -. s! " F Y • + ; ' s ay a °`s �/' g +":t� !< y. f- it f !i 'i �1` F i=+ .••♦ ''r xt i< t i K a + t. <� �y , r i'°� � �+,, '�$'«a..•.K !}"*�• ♦ r S `�{� � $ �A' i �!ri�-4,d<:+<i#+ •e; r °*a 6..,. „t+� �_ • �� ee'-S,K�yi :{ �' .. a r'r ♦+P, ` .< .-,•i 'm. '� �s,«Jf � +� 1 �, `S< �r S w « ,,,�! �:'�i, J ;°.+t x T• M«. .<°" i �� � �. � -* } = S .1� wa•r'- Y=� 0"i.s :K;. a �K r ,a .:,, 'r71°!e"��`` a t i F t t':� � �' a.// �:<�r, • , 1•"b�` ,� -•.z,.-�' '�� �s L '�♦ *#+PS A'i :�,. �«i♦ .+k�` r`i "# � �}a°�s $j° �"N�_.,Z'r•,{`�.a�.' ..,.>�liy?�-��t t i A 4 � r"1�' y}�it, s r<'°"'� Ys<�s � � ,� f�'. aF 'S�^• - 'arc-�. (j�'` �. .*• »s r a '.,• iC. .. _"it V'a+ �`{ HV'$1!� ary, i.♦ +". - w s '.-i"s, 'sA J, r 4s. i #,../ r> � � .�• •.fi � � .�+�`..`Y` � •.,,� '�" r •.$ ;�•}fit � s� " �4�'e - '�w sTy �+a:�t. "�' r .• # 'r tf + ~L` ��#' � r^ r '�' Y_'ram's� i ♦eta t " a �' •��y�,��. � ...i «+'��. t � �,tt .B _ _ e � i,wt ... 4 [;~* +�.+rr fi M[ �.'�• < � � ", r j� Z.�. �xf��''s$s sA�t' �r'e't,�..'. e ...�i we - r 3 �, } : '• ,+ <,, z...... r .: 4 '}s- y, i. +�* 't i,. Al ,. - #w' .,e ; �„ rr ar'A w•' '3e ''� ''g:`f a`* E_ _`+ 4 is *w y�., i`. E i y* " `fi # } ' s w.17'r' : �' •7,1'i+a';• n"�^. ♦ :.« s°f y ..^�, . <_ w rr 4=- '� ♦.,.� .,' a, .'$ ..e j€t• -•St rt �'+ 'r y g` ► 'y- i as; i y�.t `4 i.'ls :":', Y' s 3'_ `�• 1�. '"ra ' t _ ,.� s •' . rr• *'6:}..; # V�: T€.K: � ,..},'�.,+k �. Vr i t► - � i� �:F..ep'" a..`�t�,.i gr, � a - � "�' � +•it "` 4 a w ,ci a'S t.e"i r fj € y ^�4 T` W€.� � � €�:y1 2«:_M�S .�rw-._�•-i'y�`.+t ti:'''s t� ..Z= .+, .*i "`+, q ,- K _'K •+ °;» •<a"",'t'- +# }.,i' r:� ..:€' ' ,E'.. .+ •16 7u '" {i }',''_ s F ."` $ � ''�' i1 B�s ax• a a �B r - ,e-.�,w � r,Y •®j t `a t .k4►'�sta^ 4 t-* S.. ir.. � Y� r <.F.V. �g�, � !• ri�. • �€c♦a •s ):1t s«� � r,�T 1#�• 'rt #1 � .., � '" s•s.�� +'- ����• ,'. 4 .#s S i� a' ary. '� '£ v s;r - s;.yi!KY`s♦ €.. .S♦ , _# +t, '' iYlr ak';a •yt r... f,:. ¢t 11Rl� •. .. i 5 s �+^ � i��uY ♦ 'r } s as mit �: Y�r+;: +��9 r•�- �„_ � 3;� . s1 � � }t '� ���+�r+r€• . !` S� �. �y;,�v. !�, r# ..' °"Y .• + ii `]B ` s ' is + t'w�I� t t "4.�'S - }4 r _ , V t f *a �` .:S • .w+ *. < 'Kp p •,. •ib ;- k +'_ '# . .. a'a .A a i ,.A:. iw " i ,• sr,„ `rr `� ,;r{ • "F. :w�i� ,•tom. j�, a '!iEi, t •: •* ♦, .r_ t +. yti" ik.,, '#3,r .,ni s * y: R / i.t #t' ice" _? wart '--♦.' ""+•* -i- �y f• *Rd* as- Ilk ? • t 1s `f 7 �iI •Y r if,f�} 7 4 ' ` <r+A ^g. c s iA.: �_�«.,�� rl.�� � S3)) �« •+ .+yry� i ,� -'�6.- - .a �< �: � � r.. `�r r �. � � i '3�'f �t° - ,�Y r ' 1_`�i' `~?�n t • �- $ Kt Kr � • gT •#s.. �+� � rayr �.r r fF•. i` �.. � � ,� _ y � a �s'>r� •fir��+A� f'� '� R �t*» � i s�} ri = sue 4y at � te�"r rw=t A" eY.,+ 4 T}�i s +` t t .'£ ,� • VlA`•Ain Jr '. -d F ♦ alwt'. ,�,g.�`^# k s �■t t r* '}�^ ♦r ♦ _ s• i' +IR' �' r• jN y.M+t i ' r- a a t a a+ }" w- AS ' " -, r.Sk.T s 'f" ` "-'" w i..+'4.'� -•4t s ate' `' B♦r •.,�,�, tr ff�/q i *j` .4.9 i w�♦w ors♦ • ..�', w,r es � is '^� ,£.�r+ `-9!Ai a..**�-t � ••a �♦.�# ta�., °rY = °(��.}s i r ••!.,�� ��{y'.� �€ • >'f�,t.�� w-'4\9t eta'rtlr�� +l{� #f.�.�* i`w «i M s 4 Y�r,�.a,�. ' s< s '!. S ..'i ►.r•r' s r t° S •t•+„s, r'� AFL+•t- t '-.i<.t.d `;• k j a�,` 1:.iYyi,�yy•y ; E`+�P: r =i< 3. _ i S s•.(y�.��i- e s �./" * p°� '+*"lfi • `� �♦'•♦ ,+_ r .< ♦A ° + �w� • �•' �.. • ,a t . <} y� "�'l r .. , i>♦ £ •t��`r��rr r• yS "' i• • • • w � A rt 9€ .s,s�;A.. y 't r k ^+ ift'„*ttsrA,7 't.t '* +, f+ R fr+'.�i`1 K► I , `. _. _y,�c .s..i} a,t w.+t .._.r � - i �Y 6 •j '� � ���1� � '� •� � K �# "h �..�!• .�� {`�'T:x � � ^s � a.a +r <�� f�'` »,�''• .i � �i K '� +''#•� g r t pa M S :i r. . ,' w k •-aKt€:.°v' i a r r.: / Ki' ♦' < r 4r .}•_, ! a .. A v V _.'�.� +, •�► r+y,.r�'" r <+` r r++. t .: y 's • .ww. ,? ;.•pr..r f� +`.`� ,AS '.. '" ° *"`€" f -. a.'v . -f •_" tr ..+r +li' �+" t i:i s Sw a rI s rr •�! t r rtY re► 4 "•,..tr+ . + ° _ * F" t w.` . + _ 'ter• / . jat.* �"♦' + rr , ..� - +; �» - i�i -._ _ >f!. z> -�r. .+s".s s'•`"a tt ,rK',`+ - ��,'* - .ftl a i y B .P + "':. €.. t a y # ,s t + 4`P r£'-+;ra,+F „*� �y z• ,. c .,;.:,tye -•'" t .lt, q� s, r * •1+♦ .t�(�, ; gy � }�, $.+ �. t- ,.��€: .� •�"° • 4-tr€+'_.:� ._ �• F�`•' '� s���'R� s '� ? ix`r K;b+� 1 s °3 « _ • +or^'S -.B' i.� • t f e' r a s .: ;.._ - _. _* r • i" �•�► .. • ' ( , '�gb s ��,-._1 ♦ •i � a. `!, t, a ��k � : *t • M.'- ^,y,., <-.,,y�, �=iirF P s"s 1 �� ,i_..` _ �-y _ 1. -;t+ • _ ,;t •;, '3. '� " °r lrne9e�d�24,1tk DIVIte3Glebe " ; : t x .� `-f __ - �• �. K s 008 ��r;r. S� < r -• _r.c • + 't-ry._� � ,' �'� — 'K � it �_f s�a s w } _s,� � C, x ;.+,i * lr a 3► f � i+ YQ r :r - - "'�•}i- -. '' -w"j�•<--^__ ! t of t T > _ �s (b 2010'000pl imagery Date-'.Nov 1.2007 lat 38.919983r ion-119-965368° elev 6331 it Eye alt 9853 it e Site: HVC-1 SOUTH TAHOE PUBLIC UTILITY DISTRICT 1/25/2018 WATER QUALITY DATA Below Pioneer Trail HEAVENLY VALLLEY CREEK Temp EC Chloride COD TKN NO3-N Date C pH umhos mg/L mg/L mg/L mg/L Note 01/26/2017 0.8 7.02 57..0 1.38 < 0.110 0.040 02/23/2017 1.7 7.40 54.3 1.08 0.086 0.024 03/28/2017 2.4 7.37 55.1 0.80 _. < 0.050 0.017 04/11/2017 4.6 7.44 52.4 0.72 0.149 0.013 05/17/2017 8.3 6.83 41.2 0.67 0.105 0.023 06/21/2017 11.5 6.28 24.1 0.50 0.581 0.047 07/19/2017 12.5 7.41 34.6 0.59 0.060 0.012 08/08/2017 12.5 7.14 46.8 0.47 0.141 < 0.010 09/19/2017 9.2 6.96 47.3 0.68 0.134 0.011 10/24/2017 7.7 7.16 47.7 0.76 0.145 < 0.010 11/21/2017 5.4 7.18 57.9 0.78 0.104 0.022 12/15/2017 3.7 7.66 58.7 1.06 0.168 0.031 Maximum 12.5 7.66 58.7 1.38 0.0 0.581 0.047 Minimum 0.8 6.28 24.1 0.47 0.0 < 0.050 < 0.010 Average 6.7 7.15 48.1 0.80 0.153 0.022 #Tests 12 12 12 12 0 12 12 Temp pH EC Chloride COD TKN NO3-N Year C umhos mg/L mg/L. mg/L mg/L Comments . 1984 4.0 7.30 43.0 0.90 5.0 0.110 1985 3.7 7.39 50.0 1.30 6.0 0.180 1986 4.1 7.18 42.0 1.00 8.0 0.130 1987 4.7 6.70 77.0 5.50 5.0 0.200 1988 1.9 6.99 80.0 5.10 5.0 0.330 1989 4.8 7.14 59.0 1.50 6.0 0.150 1990 5.0 7.46 75.3 2.09 6.8 0.209 1991 5.6 7.34 84.9 2.44 6.3 0.153 1992 3.4 7.49 75.8 2.30 13.0 0.146 1993 5.5 7.25 57.8 1.67 9.1 0.120 0.093 1994 4.4 7.54 66.9 2.10 10.6 0.600 0.098 1995 5.1 6.80 55.8 1.85 10.6 0.335 0.085 1996 5.6 7.30 49.0 1.10 6.0 0.234 0.050 1997 6.1 7.25 42:0 0.90 6.0 0.294 0.070 1998 4.9 6.90 44.0 1.00 5.0 0.203 0.050 1999 5.2 6.97 43.7 0.99 5.3 0.218 0.079 2000 5.1 7.33 47.5 0.91 5.0 0.194 0.063 2001 6.3 7.30 56.6 1.39 5.5 0.147 0.113 2002 7.3 6.88 55.4 1.61 5.9 0.163 0.066 2003 6.7 7.12 58.1 2.75 10..4 0.199 0.099 2004 5.3 7.15 58.5 1.60 6.8 0.279 0.082 2005 5.3 7.29 50.6 1.50 13.3 0.209 0.073 2006 4.9 7.18 47.4 1.00 8.9 0.116 0.040 2007 6.1 7.12 57.8 1.40 11.2 0.148 0.077 2008 6.4 7.09 . 57.2 1.40 7.5 0.089 0.083 2009 5.5 7.20 56.0 1.50 14.6 0.145 0.070 2010 4.7 7.26 56.9 -1.60 7.9 0.116 0.083 2011 4.7 7.16 49.2 0.90 8.7 0.179 0.038 2012 6.1 7.27 61.6 1.20 0.067 0.068 2013 5.8 7.33 66.6 1.40 0.090 0.124 2014 6.0 7.24 65.7 1.60 - 0.066 0.131 2015 6.4 7.42 70.0 1.60 0.130 0.088 2016 7.1 7.09 61.4 2.80 0.129 0.063 2017 6.7 7.15 48.1 0.80 0.153 0.022 Maximum 7.3 7.54 84.9 5.50 14.6 0.600 0.330 Minimum 1.9 6.70 42.0 0.80 5.0 0.066 0.022 Average 5.3 7.19 58.0 1.73 7.8 0.185 0.103 #Years 34 34 34 34 .28 25 34 Site: HVC-2 SOUTH TAHOE PUBLIC UTILITY DISTRICT 1/25/2018 WATER QUALITY DATA Upstream STPUD HEAVENLY VALLLEY CREEK Temp EC Chloride COD TKN NO3-N Date C pH umhos mg/L mg/L mg/L mg/L Note 01/26/2017 0.4 6.05 44.9 2.15 0.203 0.010 02/23/2017 0.4 6.60 40.1 2.24 0.153 0.053 03/28/2017 0.9 6.57 50.6 2.88 0.142 < 0.010 04/11/2017 6.0 6.98 47.1 2.29 0.207 < 0.010 05/17/2017 11.6 7.10 36.4 0.88 0.146 < 0.010 06/21/2017 15.8 6.06 28.6 0.52 0.154 0.014 07/19/2017 15.8 6.77 38.0 0.60 0.171 < 0.010 08/08/2017 16.0 6.77 49.7 0.66 0.243 < 0.010 09/19/2017 9.4 6.36 56.9 0.82 0.255 < 0.010 10/24/2017 8.3 7.06 54:2 0.98 0.199 < 0.010 11/21/2017 4.1 6.68 50.2 1.55 0.179 0.022 12/15/2017 2.0 6.91 58.1 1.34 0.246 0.010 Maximum 16.0 7.10 58.1 2.88 0.0 0.255 0.053 Minimum 0.4 6.05 28.6 0.52 0.0 0.142 < 0.010 Average 7.6 6.66 46.2 1.41 0.192 0.015 #Tests 12 12 12 12 0 12 12 Temp pH EC Chloride COD TKN NO3-N Year C umhos mg/L mg/L mg/L mg/L Comments 1984 4.5 7.07 44.0 1.40 6.0 0.090 1985 3.2 7.13 47.0 1.30 7.0 0.110 1986 3.3 6.75 43.0 1.60 19.0 0.170 1987 3.9 7.10 47.0 1.40 7.0 0.090 1988 0.9 6.67 56.0 2.50 7.0 0.070 1989 4.2 6.95 64.7 2.74 24.0 0.220 1990 5.2 6.89 63.2 3.14 24.6 0.064 1991 10.6 6.79 56.8 4.30 21.0 0.075 1992 No flow for entire year 1993 .6.5 7.04 56.8 2.95 20.5 0.480 0.301 1994 3.9 7.11 68.7 2.52 15.3 0.057 ..1995 5.6 6.33 46.9 2.05 11.2 0.378 0.056 1996 6.2 6.92 47.0 1.50 12.0 0.386 0.020 1997 6.9 7.12 49.0 1.70 4.0 0.290 0.020 1998 5.1 6.78 48.0 1.50 6.0 0.277 0.010 1999 6.1 6.72 47.9 1.14 5.6 0.239 0.020 2000 4.3 7.05 47.2 1.32 7.4 0.255 0.033 2001 5.3 6.97 51.6 1.78 7.6 0.265 0.015 2002 8.7 6.91 53.3 2.86 13.9 0.258 0.016 2003 10.2 6.73 59.5 4.12 20.6 0.377 0.056 2004 7.1 6.89 38.0 1.49 8.4 0.272 0.026 2005 6.6 6.78 41.4 1.53 21.8 0.504 0.043 2006 4.9 6.96 47.6 1.44 13.3 0.158 0.015 2007 4.6 7.04 49.2 1.39 10.1 0.156 0.019 2008 6.8 6.88 45.2 1.74 10.0 0.180 0.032 2009 6.4 6.72 . 41.1 1.63 16.3 0.328 0.014 2010 5.7 7.05 47.7 2.13 15.9 0.230 0.083 2011 5.2 6.74 49.2 1.13 15.2 0.143 0.018 2012 5.9 6.72 53.7 2.32 0.216 0.017 2013 5.7 6.67 53.9 2.83 -0.168 0.026 2014 6.5 6.43 56.7 8.75 0.377 0.073 2015 8.7 6.65 42.2 1.38 0.404 0.197 2016 7.3 6.26 75.9 4.19 0.342 0.025 2017 7.6 6.66 46.2 1.41 0.192 0.015 Maximum 10.6 7.13 75.9 4.30 24.6 0.504 0.301 Minimum 0.9 6.26 38.0 1.13 4.0 0.143 0.010 Average 5.9 6.83 51.1 2.13 13.0 0.286 0.064 #Years 33 33 33 33 27 24 33 Site: HVC-3 SOUTH TAHOE PUBLIC UTILITY DISTRICT 1/25/2018 WATER QUALITY DATA Below Meadow Crest Dr HEAVENLY VALLLEY CREEK Temp EC Chloride. COD TKN NO3-N Date C pH umhos mg/L mg/L mg/L mg/L Note 01/26/2017 Dry-Frozen solid 02/23/2017 0.4 7.37 41.3 2.77 0.155 0.068 03/28/2017 1.0 7.01 56.3 3.47 0.127 0.046 04/11/2017 5.7 7.00 51.0 2.64 0.179 0.027 05/17/2017 11.2 7.15 38.4 0.98 0.137 '< 0.010 06/21/2017 15.1 6.12 86.5 0.50 0.151 0.010 07/19/2017 15.3 6.89 38.1 0.62 0.184 < 0.010 08/08/2017 16.3 6.88 48.8 0.66 0.244 < 0.010 09/19/2017 9.1 6.50 57.8 0.83 0.254 < 0.010 10/24/2017 8.3 6.31 48.5 1.12 0.176 < 0.010 11/21/2017 3.7 6.69 52.8 1.63 0.184 0.022 12/15/2017 2.5 7.22 54.6 1.42 0.243 0.010 Maximum 16.3 7.37 86.5 3.47 0.0 0.254 0.068 Minimum 0.4 6.12 38.1 0.50 0.0 0.127 < 0.010 Average 8.1 6.83 52.2 1.51 0.185 0.021. #Tests 11 11 11 11' 0 11 11 Temp pH EC Chloride COD TKN NO3-N Year C umhos mg/L mg/L mg/L mg/L Comments 1984 4.6 7.05 50.0 1.90 7.0 0.100 1985 3.4 7.16 84.0 3.80 9.0 0.190 1986 4.1 6.73 93.0 11.80 25.0 0.590 1987 3.9 6.94 96.0 5.10 16.0 0.170 1988 0.9 6.65 241.0 17.70 22.0 1.220 1989 4.8 7.01 152.0 12.40 38.1 0.320 1990 7.1 7.27 88.3 5.95 13.8 0.178 1991 7.5 6.90 161.7 12.18 15.5 0.165 1992 1.1 7.07 289.0 22.50 29.0 0.105 1993 6.0 7.08 88.8 4.20 21.8 0.770 0.247 1994 5.1 7.24 82.6 3.79 48.6 3.240 0.084 1995 5.5 7.11 70.8 3.90 9.4 0.487 0.128 1996 6.0 6.88 49.0 1.70 12.0 0.314 0.040 1997 6.6 7.05 51.0 1.80 4.0 0.290 0.020 1998 4.9 6.73 51.0 1.60 6.0 0.272 0.020 1999 5.5 6.81 50.7 1.37 5.6 0.255 0.018 2000 4.2 7.07 50.8 1.51 7.2 0.322 0.038 2001 7.3 6.66 63.3 2.34 7.0 0.334 0.011 2002 7.3 6.96 76.6 3.77 29.7 0.659 0.154 2003 6.7 6.82 97.3 5.38 20.7 0.455 0.262 2004 6.2 6.79 42.3 1.68 8.5 0.219 0.058 2005 5.5 6.83 49.3 1.73 16.0 0.386 0.145 2006 4.3 6.93 50.9 1.57 13.4 0.184 0.017 2007 3.9 6.89 52.1 1.59 10.0 0.133 0.022 2008 6.5 6.85 64.0 2.79 10.4 0.211 0.187 2009 5.8 6.85 55.3 4.08 17.8 0.307 0.098 2010 5.6 7.09 56.7 2.61 14.3 0.228 0.146 2011 5.0 6.89 51.0 1.27 13.5 0.330 0.023 2012 5.4 6.74 56.3 2.17 0.211 0.018 2013 5.5 6.81 59'5 3.85 0.190 0.032 2014 6.7 6.56 68.4 6.07 0.308 0.033 2015 7.6 7.27 46.8 1.90 0.476 0.174 2016 7.1 6.40 88.5 9.31 0.322 0.198 2017 8.1 6.83 52.2 1.51 0.185 0.021 Maximum 8.1 7.27 289.0 22.50 48.6 3.240 1.220 Minimum 0.9 6.40 42.3 1.27 4.0 0.133 0.011 Average 5.5 6.91 81.8 4.91 16.1 0.444 0.154 #Years 34 34 34 34 28 25 34 Site: HVC-5 SOUTH TAHOE PUBLIC UTILITY DISTRICT 1/25/2018 WATER QUALITY DATA Culvert Avove Meadow Crest Dr HEAVENLY VALLLEY CREEK Temp EC Chloride COD TKN NO3-N Date C pH umhos mg/L mg/L mg/L mg/L Note 01/08/2017 1.0 6.68 66.8 14.50 0.155 0.056 Stormwater Flow 01/26/2017 No Flow 02/07/2017 1.3 6.91 74.4 17.20 0.109 Stormwater Flow 02/23/2017 No Flow 03/28/2017 No Flow 04/11/2017 No Flow 05/17/2017 No Flow 06/21/2017 No Flow 07/19/2017 No Flow 08/06/2017 19.8 5.88 56.5 7.04 1.560 0.306 Stormwater Flow 08/08/2017 No Flow 09/08/2017 0.5 6.23. 24.2 1.03 1.300 0.212 Stormwater Flow 09/19/2017 No Flow 10/24/2017 No Flow 11/15/2017 6.8 6.47 31.6 2.26 0.276 0.251 Stormwater Flow 11/21/2017 No Flow 12/15/2017 No Flow Maximum 19.8 6.91 74.4 17.20 0.0 1.560 0.306 Minimum 0.5 5.88 24.2 1.03 0.0 0.155 0.056 Average 5.9 6.43 50.7 8.41 0.823 0.187 #Tests 5 5 5 5 0 4 5 Temp pH EC Chloride COD TKN NO3-N Year C umhos mg/L mg/L mg/L mg/L Comments 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 8.0 7.53 '80.0 3.70 18.0 0.910 0.240 1995 4.2 6.83 36.0 2.00 41.0 1.000 0.130 1996 5.3 7.28 69.0 8.40 31.0 0.963 0.350 1997 4.3 6.49 268.0 3.50 29.0 0.840 0.070 1998 0.7 6.50 133.0 5.20 27.0 0.910 1.780 1999 8.0 6.97 67.4 12.60 25.7 1.190 0.123 2000 4.4 6.67 31.1 15.35 21.2 0.639 0.236. 2001 Dry 2002 4.9 6.74 30.1 1.10 92.9 1.460 0.352 2003 1.1 7.29 37.0 6.69 . 24.0 0.583 0.222 2004 Dry 2005 3.7 6.73 74.3 4.08 66.0 . 1.016 0.689 2006 6.1 7.23 112.0 3.49 45.7 0.568 0.455 2007 2.1 6.62 45.9 3.27 93.5 0.875 0.216 2008 Dry 2009 5.9 7.01 36.0 2.76 31.6 0.447 0.210 2010 6.2 7.18 174.3 33.92 97.3 0.846 0.539 2011 6.3 6.64 66.7 3.72 208.0 0.980 0.441 2012 3.9 6.59 38.8 3.17 0.509 0.180 2013 15.7 5.89 50.7 .4.34 1.880 0.401 2014 4.4 6.73 50.2 7.23 0.319 0.116 2015 9.5 6.08 33.8 8.46 1.201 0.069 2016 5.0 6.69 101.7 22.08 0.311 0.101 2017 5.9 6.43 50.7 8.41 0.823 0.187 Maximum 15.7 7.53 268.0 33.92 208.0 1.880 1.780 Minimum 0.7 5.89 30.1 1.10 18.0 0.311 0.069 Average 5.5 6.77 75.6 7.78 56.8 0.870 . 0.338 #Years 21 21 21 21 15 21 21 uhmos/cm Cl, mg/L NO3-N,mg/L O O O O O Cl O O O U1 O cn O m O O O O O Cl O O 1984 1984 1984 1985 1985 1985 1986 1986 1986 1987 1987 1987 1988 1988 1988 1989 1989 1989 1990 1990 1990 1991 1991 1991 1992 1992 1992 1993 1993 1993 1994 (D 1994 1994 1995rMIL 1995 1995 �. rMIL = 1996 = 1996 = 1996 C 1997 0 < 1997 n 1997 r�y. n 1998 1998 =r 1998 1999 1999 0 1999 Z 2000 � 2000 2000 2001 C. = 2001 C = 2001 C C 2002 C 2002 C 2002 M IV 2003 r0y 2003 2003 N N 2004 <o 2004 2004 2005 rMILL 2005 2005 2006 2006 2006 = 2007 C 2007 2007 C7 2008 n 2008 C� 2008 W 2009 CA 2009 2009 2010 2010 2010 2011 2011 2011 2012 2012 2012 2013 2013 2013 2014 2014 2014 2015 2015 2015 2016 2016 2016 2017 2017 2017 EMERGENCY RETENTION BASIN , TREATMENT PLANT & BURIED SLUDGE MONITORING WELLS i .•' i ♦« s ♦ Zf#" • s+r` .� i .r « ,` sf �" ,, sV�s# #,fP,•_• A _ �, . , rR i t_ •-d► t +f ��f _ rt_f«« ' • • r R f s „ 'yt .: ~ e�R ' fa•�. }: • aM+4• '+' • .''w s W. , t + ''Ss{a - a: S f�`F- f- t s^' f + '' * - a► r �i• }. +�► rr f+s it _�! +rt '0 y . 4 •� a •a►+ ' .*a� ..,; � i r'" •. ;' +t • '� �fl` � �/ A. .i n� i ��'+E.•!."�'� � iMF � �T � � <y '� ♦a ; • !+ z_°fir; ++ r E' rt '• a ' *' + t Wr «..r ♦R-� ♦ r w, .,t ;1 • * -: ,.. '1►! ; Rr`, a • wt y ♦ ^�Y a� '�Y �! ii'yt + ! +! • t �F ir- s • s.9► 4 .1 a _ ♦ ..Yr fKry, r � . ,i `aY � � ♦s ���i'�� ;��! � i� �tr� t •� 'r,... s j" MWVT• � � #' ♦ +f#i" My � j ! „1� "^ a r iK d �a'� iR ` f•vrt" St;#• _.d+^�at"ar; i!' •*"•6 � a r• r 4,f � *^tr ! !t s0 rr: y aTs •,#__a�► '# � s'� +i'e R#� •s,•Mtxs a° Y ' �r. R "Y' *r , • .i •,tea yr' # }*" * '�.�°' R Mink*Moak:Ak. � � : «� �� � .� ;"�I•�� • ,; :._ .M+ #`'J..v a r �' `V7� ♦i �► - • , as ` , r*g - ice-—�'-t.s — — •!�'---=--fir- ! s. i a aF • �e * — 2 `L tti. d t •* w • +y. s'* ai �i a. `r s i �a w 1? s `r * t -� ;v,�-r f-�+'-� --,.a— -fir��-��,/M`-�5-- ---- ,Jt �-s. .._. _ - - ---- -fir - .f_ _ _..�'�<.---- �,WP.a.-. � � ' •�, �• - ^i s s' y s d � P' •�R s s - - y z irk $ _,pYt 11�` #�l► :� - : �:€ a } !`, 04 - + S 4. { _ ..:4. ,��a" �f •���r�<� r �' `€two;:�+� a,.. it � !�f""• #- ��,.#'� # .- ¢ i�� �.*'' t as'1• Y - iF NoS. 3 :_# s lk `J _�.��• '..��' td'�iR.��'i91 K 4.. •� �{t' ;, �**• a � - � `i*� i.. � '°i # :� ..ply_ f i ♦ v. � x -� w'z�''a"•:. k ..'' R a.s K ! ai r^' °' - '�a. y` i i i W of s '•,�s' . •i � i4 . � r • `°.fir_�. • ► �k � , } C"pJY 't♦i'" b�•a}f� ,..t�, �� 7 f ray '3 +� tl► a".� "r Y v% r..- .+t � _,f' vex - • { ! - � • * ��,#1•{♦�b r #•" ' r�x_ � * i/� t as �K:� a �3`• a �`,. � `� � �•�' sr ♦�a► �i !P � ,� #. - v •�e ss y�:1► 1:" s Mri }t ! ! ► } Y #Ao of a� v $4 # ♦ bR h Of 'i' `rie p ' Af is '+t# � sy �, r +'tX . ; +. w r a► A x � r ,..- .K w �**rt*a ��. . •' �� �' �ilk-�^"_ � Ar 1F * o a^k. iF w g /1� K��y� ft ` Y .Ay ; ♦'# rarM �� # � .. s ?i e 1 *«•+ *•4 . tr {c f f Y t - 7/©� i O I M•-/< •1 YIIr .:ik=€ .,a► ♦ • ,• T .'-^E 19 ,3" a � � •,i r J- � + i * i ♦ate. � � � > 7♦ ���` . M �. •�s > <P'�' � �s w ����.�}j`r�'""�, �.���" ��,F!. �,; � .*. "iw �• ��# aFyl� ' �w. r•�� ,r f . "7F. � a Vol ve s t M• .{.Aw Vt.', � � * �,4r� " a as�' s� { w F : � � ,Y. vt�F t� R a.+ ♦ -�w4+�F.y.• �r•.. w �ti�pg ` , .: c�a �i•j^=�`Y=air b.. g#ee k►Bi -t+Av* "; ,p ,�N y.�F"�....�'. � �i r� ���7YY�al�1�l•!F - d..�• 4- � . • • J ; i1 T *J �7' �L� s � "t ..• J sKw raii' � ��„Y'* y� ,., , qt '"' *a a. a '«r' . a ;# �' • s fur y",� 00 # �kFr' �,a;i . s i •� +et 1+!s, r f ;T�t Y + Y s s �' Y +t ; �`� ,.: • `Y +r �,� ,��" '. :• :j e� ,�•a__ •d i�Y.. s" !r• ` . * ► `, ;` ! '_ a ��,MF i •;i '` "s t t . i b. y y iA _ $• a x$ y j'+ Is *:�4 i s • {'t ��, s 8 ar' ' 1p.x c �'1 . s Ir #F .+647�itw.,R l ,P,,, .,,f. ? a e .,,. .. # '"V.:w'.x�..° ,, . *• 'fii 4It'a+7 ^ 4 t.y..,^ S,a' '°' tr"*. qp a' f,s•a .f,. r �" y'# 0 •�"m "!1 `` ..._,. f: ` - arT s.. .r'# •a ar r � y 6 "0 10 G00910 s * i • #f ^; t�► "�y are } r .•, �R t Y�IYa�rtY•Y�I 1�IIA�iIrY IYYi rl Y YY , �.xx e',., 4 tea+ `�F 'J�� T � � �j� �*.w' � y �J^#1�•y+��i� _ � ! T Imagery Date Nov !"� Z�Q� iat A38 914140t" ion •I 19.9649$5*",N.*lav 6314It a = ,dT■ ram, .��1 .} E�is slt $506 It SOUTH TAHOE PUBLIC UTILITY DISTRICT 1/26/2018 Site: CONTROL WATER QUALITY DATA Area: Emergency Pond MONITORING WELLS Mean Sea Temp EC Chloride COD NO3-N Date Level C pH umhos mg/L mg/L mg/L Comments 01/26/17 6278.62 8.3 6.75 245 15.5 A.68 04/11/17 6281.25 9.0 6.98 249 14.7 4.97 07/18/17 6285.90 10.0 7.09 235 16.6 5.11 10/18/17 6285.88 8.7 6.98 245 16.7 5.11 Maximum 6285.90 10.0 7.09 249 16.7 0 5.11 Minimum 6278.62 8.3 6.75 235 14.7 0 4.68 Average 6282.91 9.0 6.95 244 15.9 4.97 #Tests 4 4 4 4 4 0 4 Mean Sea Temp EC Chloride COD NO3-N Year Level C pH umhos m /L mg/L mg/L Comments 1984 1985 1986 1987 6281.4 9.1 6.87 137 3.6 6. 0.64 1988 6277.4 9.2 6.84 115 0.6 7 0.10 1989 6279.1 10.4 7.18 118 0.6 6 0.24 1990 6274.0 9.7 7.27 120 0.9 5 0.44 1991 6273.3 9.3 7.21 118 1.4 < 5 0.61 1992 6272.2 9.4 7.44 123 1.2 15 0.73 1993 6273.1 9.9 7.25 131 1.4 5 1.01 1994 6275.2 11.0 7.11 143 1.8' 6 1.50 1995 6277.7 9.5 7.07 153 2.7 7 2.03 1996 6282.9 9.6 7.05 162 5.7 3 2.66 1997 6285.5 10.1 6.89 173 5.6 4 2.64 1998 6284.0 9.8 6.66 170 5.8 < 5 2.39 1999 6284.3 9.3 6.70 175 6.8 6 2.43 2000 6282.8 9.4 6.83 174 7.4 < 5 2.40 2001 6280.5 9.4 6.87 173 8.1 5 2.34 2002 6278.7 9.6 6.89 176 8.1 6 2.36 2003 6278.4 10.2 7.02 182 8.6 5 2.60 2004 6278.7 9.1 6.91 182 9.4 6 2.91 2005 6279.3 9.2 7.01 189 9.8 8 3.18 2006 6283.0 9.7 6.96 200 10.1 8 3.45 2007 6281.8 9.8 6.82 192 10.5 6 3.40 2008 6279.6 10.1 6.96 190 10.9 5 3.42 2009 6278.6 9.8 6.81 204 11.7 6 3.72 2010 6278.6 9.9 6.79 217 12.6 5 4.00 2011 6281.6 9.7 6.84 225 13.1 8 4.28 2012 6281.6 9.7 7.19 226 15.1 4.70 2013 6279.6 9.8 7.39 230 15.6 4.69 2014 6278.4 9.6 7.00 236 16.0 4.55 2015 6277.1 10.4 6.87 240 16.0 4.60 2016 6277.1 9.0 6.96 240 16.4 4.71 2017 6282.9 9.0 6.95 244 15.9 4.97 Maximum 6285.5 11.0 7.44 244 16.4 8 4.97 Minimum 6272.2 9.0 6.66 115 0.6 3 0.10 Average 6279.3 9.7 6.99 179 8.2 6 2.70 #Years 31 31 31 31 31 25 31 SOUTH TAHOE PUBLIC UTILITY DISTRICT 1/26/2018 Site: MW01.5 WATER QUALITY DATA Area: Emergency Pond MONITORING WELLS Mean Sea Temp EC Chloride COD NO3-N Date Level C pH umhos mg/L mg/L mg/L Comments 01/26/17 6267.94 &1 7.00 173 2.24 0.420 04/11/17 6269.30 8.9 7.19 187 1.93 0.371 07/18/17 6270.34 10.2 7.20 178 2.23 0.476 10/18/17 6269.66 9.4 7.19 179 2.04 0.390 Maximum 6270.34 10.2 7.20 187 2.24 0 0.476 Minimum 6267.94 8.1 7.00 173 1.93 0 0.371 Average 6269.31 9.2 7.15 179 2.11 0.414 4 4 4 4 4 0 4 Mean Sea Temp EC Chloride COD NO3-N Year Level C. pH umhos mg/L mg/L mg/L Comments 1984 1985 1986 6273.3 8.1 7.11 402 30.6 4 4.72 1987 6272.9 9.1 6.87 355 23.7 5 2.79 1988 6271.6 9.7 6.97 327 20.7 8 2.21 1989 1990 1991 1992 1993 1994 1995 1996 1997 6270.4 9.6 7.02 196 6.0 4 0.970 1998 6269.5 9.0 6.98 165 4.3 < 5 0.670 1999 6275.9 9.3 7.03 171 3.4 < 5 0.680 2000 626.8.9 9.4 7.08 170 3.0 6 .0.650 2001 6268.5 9.3 6.80 .157 2.6 5 0.510 2002 2003 2004 2005 6270.3 9.1 7.01 192 4.5 9 0.590 2006 6270.0 9.2 7.19 '-180 4.0 8 0.631 2007 6278.8 9.4 7.05 168 3.7 6 0.776 2008 6267.9 9.8 7.17 162 3.2 5 0.649 2009 6267.6 9.2 7.12 162 2.6 5 0.537 2010 6267.7 9.4 7.05 161 2.3 5 0.480 2011 6268.3 8.9 6.97 174 2.4 10 0.482 2012 6268.4 9.1 7.19 159 2.3 0.475 2013 6267.7 9.0 7.10 162 2.1 0.457 2014 6267.4 9.0 7.18 163 2.2 0.405 2015 6267.2 8.8 6.96 172 2.2 0.462 2016 6267.4 8.8 7.09 159 2.2 0.451 2017 6269.3 9.2 7.15 179 2.1 0.414 Maximum 6278.8 9.8 7.19 402 30.6 10 4.720 Minimum 6267.2 8.1 6.80 157 2.1 4 0.405 Average 6270.0 9.2 7.05 197 6.2 6 0.953 #Years 21 21 21 21 21 15 21 SOUTH TAHOE PUBLIC UTILITY DISTRICT 1/26/2018 Site: MW02-50 WATER QUALITY DATA Area: Emergency Pond MONITORING WELLS Mean Sea Temp EC Chloride COD NO3-N Date Level C pH umhos mg/L mg/L mg/L Comments 01/26/17 6266.74 8.5 6.53 309 33.7 2.61 04/11/17 6269.35 9.4 6.63 322 29.6 2.92 07/18/17 6270.20 11.3 6.81 304 23.3 2.31 10/18/17 6269.58 9.6 6.74 314 32.8 2.90 Maximum 6270.20 11.3 6.81 322 33.7 0 2.92 Minimum 6266.74 8.5 6.53 304 23.3 0 2.31 Average 6268.97 9.7 6.68 312 29.9 2.69 4 4 4 4 4 0 4 Mean Sea Temp EC Chloride COD NO3-N Year. Level C pH umhos mg/L mg/L mg/L Comments 1984 6284.1 1985 1986. 6271.7 8.6 6.56 470 46.3 4 12.28 1987 6272.4 10.5 6.51 584 63.3 7 12.72 1988 6273.3 10.7 6.60 574 60.8 9 9.68 1989 6265.9 8.6 8.53 630 62.5 5 13.51 1990 Dry 1991 Dry 1992 Dry 1993 Dry 1994 Dry 1995 Dry 1996 6269.4 93 6.78 528 53.2 2 12.40 1997 6270.3 10.4 6.53 588 59.2 4 13.92 1998 6269.1 10.1 6.53 557 55.0 < 5 12.82 1999 6269.2 9.8 6.41 456 43.3 6 10.22 2000 6268.5 10.2 6.69 404 37.6 5 8.60 2001 6268.3 10.3 6.59 391 36.9 5 8.40 2002 Dry 2003 Dry 2004 Dry 2005 6270.1 9.9 6.53 535 52.0 12 15.16 2006 6269.9 10.4 6.37 614 53.9 10 18.35 2007 6268.6 10.5 6.31 573 52.7 8 14.98 2008 6268.0 10.7 6.59 438 42.7 5 9.48 2009 6266.7 10.6 6.49 389 39.2 6 7.35 2010 6265.9 10.3 6.50 364 37.9 7 6.38 2011 6268.6 10.0 &M 358 36.9 13 5.84 2012 6268.2 10.2 6.46 348 39.0 5.16 2013 6267.1 10.0 6.66 334 37.2 4.39 2014 6266.7 10.1 6.77 326 37.6 3.88 2015 6266.5 10.3 6.73 323 36.6 3.25 2016 6266.2 9.9 6.69 312 36.2 2.93 2017 6269.0 9.7 6.68 312 29.9 2.69 Maximum 6284.1 10.7 8.53 630 63.3 13 18.35 Minimum 6265.9 8.6 6.31 312 29.9 2 2.69 Average 6269.3 10.0 6.65 453 45.6 7 9.32 #Years 24 23 23 23 23 17 23 SOUTH TAHOE PUBLIC UTILITY DISTRICT 1/26/2018 Site: MW03-50 WATER QUALITY DATA Area: Emergency Pond " MONITORING WELLS Mean Sea Temp EC Chloride COD NO3-N Date Level C pH umhos mg/L mg/L mg/L Comments 01/26/17 6267.86 9.3 6.30 409 38.3 9.2 04/11/17 6269.49 9.7 6.38 428 33.4 9.7 07/18/17 6270.41 11.4 6.39 515 120.0 0.4 10/18/17 6269.72 9.4 6.23 662 147.0 0.6 Maximum 6270.41 11.4 6.39 662 147.0 0 9.7 Minimum 6267.86 9.3 6.23 409 33.4 0 0.4 Average 6269.37 10.0 6.33 504 84.7 5.0 4 4 4 4 4 0 4 Mean Sea Temp EC Chloride COD NO3-N Year Level C pH umhos mg/L mg/L mg/L Comments 1984 6275.7 9.4 6.40 431 45.7 16 7.19 1985 6270.5 10.8 6.46 418 36.6 25 9.84 1986 6273.9 10.7 6.21 443 41.4 10 5.37 1987 6272.7 10.4 6.29 518 59.2 9 1.63 1988 6269.4 11.1 6.28 653 68.9 6 1.79 1989 6265.9 11.7 6.39 738 67.3 8 0.88 1990 6265.4 11.3 6.44 814 66.2 10 2.24 1991 6265.1 10.6 6.52 713 63.6 8 0.75 1992 6265.2 10.2 6.57 668 61.4 9 1.41 1993 6266.1 10.8 6.41 636 57.9 8 1.51 1994 6265:4 10.9 6.45 645 60.5 8 1.34 1995 6267.3 9.8 6.51 578 53.2 9 6.78 1996 6269.1 10.4 6.26 539 55.0 3 13.48 1997 6270.4 10.4 6.20 505 51.3 4 21.33 1998 6269.2 10.2 6.11 493 46.5 < 5 11.17 1999 6269.2 9.8 6.11 400 38.3 5 4.53 2000 6268.5 10.3 .6.46 381 32.0 5 4.85 2001 6268.0 10.6 6.33 494 42.6 -5 18.51 2002 6267.E 10.6 5.96 .671 55.8 7 28.95 2003 6267.5 10.8 6.11 623 60.4 5 22.14 2004 6267.4 9.9 6.27 531 50.9 6 16.43 2005 6270.6 10.4 6.33 513 49.9 10 21.70 2006 6270.1 10.6 6.22 542 61.0 9 17.00 2007 6268.8 10.8 6.10 500 67.5 7 10.30 2008 6268.0 11.0 6.59 429 63.1 6 5.90 2009 6267.8 10.3 6.50 480 58.3 6 14.10 2010 6267.7 10.7 6.48 493 62.4 7 .17.10 2011 6268.8 10.5 6.36 469 63.7 10 11.60 2012 6268.3 10.6 6.35 396 53.9 5.10 2013 6267.6 10.8 16.40 484 51.6 16.70 2014 6267.2 10.2 6.16 598 53.2 27.50 2015 6267.0 10.3 6.15 560 47.4 23.10 2016 6267.3 10.0 6.23 474 41.6 14.60 2017 6269.4 10.0 6.33 504 84.7 5.00 Maximum 6275.7 11.7 6.69 814 84.7 25 28.95 Minimum 6265.1 9.4 5.96 381 32.0 3 0.75 Average 6268.5 10.5 6.32 542 55.1 8 10.94 #Years 34 34 34 34 34 28 34 SOUTH TAHOE PUBLIC UTILITY DISTRICT 1/26/2018 Site: MW04-50 WATER QUALITY DATA Area: Emergency Pond MONITORING WELLS Mean Sea Temp EC Chloride COD NO3-N Date Level C pH umhos mg/L mg/L mg/L Comments 01/26/17 6253.40 Dry 04/11/17 6277.71 8.2 6.43 103.0 8.92 0.142 07/18/17 6273.49 9.7 6.35 93.2 8.95 0.027 10/18/17 6271.47 8.5 6.20 105.0 10.10 0.044 Maximum 6277.71 9.7 6.43 105.0 10.10 0 0.142 Minimum 6253.40 8.2 6.20 93.2 8.92 0 0.027 Average 6269.02 8.8 6.33 100.4 9.32 0.071 4 3 3 3 3 0 3 Mean Sea Temp EC Chloride COD NO3-N Year Level C pH umhos mg/L mg/L mg/L Comments 1984 6266.6 11.4 6.68 90 1.8 3 0.330 1985 1986 6266.9 7.2 6.18 75 3.8 4 0.570 1987 6265.6 8.9 6.14 208 31.7 6 1.720 1988 6263.8 8.7 5.96 306 44.9 8 1.350 1989 6261.6 9.5 6.12 284 36.5 6 1.190 1990 6263.0 8.7 6.20 272 35.9 6 1.494 1991 6263.2 8.5 6.39 286 46.6 5 1.047 1992 6261.8 8.4 6.23 358 55.8 6 0.686 1993' 6263.4 9.0 6.19 217 25.6 6 0.637 1994 6263.7 9.1 6.16 190 21.9 7 0.565 1995 6267.5 8.6 6.70 146 12.9 11 0.365 1996 .6269.5 8.7 6.38 85 4.8 3 0.070 1997 6271.4 8.9 6.37 77 5.3 4 0.070 1998 6270.1 8.4 6.15 140 6.0 < 5 0.060 1999 6270.1 8.6 6.04 77 5.5 < 5 0.070 2000 6267.9 8.3 6.58 76 5.3 < 5 0.070 2001 6267.6 9.1 6.48 77 4.8 < 5 0.100 2002 6267.3 8.8 6.06 80 4.4 6 0.100 2003 6267.6 9.1 6.32 79 5.5 5 0.080 2004 6267.8 6.6 6.27 74 4.2 5 0.050 2005 6269.8 8.7 6.32 80 4.2 9 0.061 2006 6271.8 8.9 6.48 81 6.2 8 0.026 2007 6269.4 9.1 6.57 81 6.6 6 0.027 2008 6268.7 9.1 6.78 80 6.5 5 0.027 2009 6268.3 8.7 6.21. 80 5.9 7 0.037 2010 6268.6 9.0 6.14 82 5.5 6 0.037 2011 6271.0 9.1 6.11 81 5.4 6 0.037 2012 6269.4 8.6 6.19 79 6.3 0.042 2013 6268.8 8.9 6.17 78 5.4 0.116 2014 6268.3 8.9 6.31 81 5.1 0.298 2015 6267.9 8.9 6.27 91 4.9 0.608 2016 6268.4 9.0 6.16 90 4.9 0.826 2017 6269.0 6.6 6.33 100 9.3 0.071 Maximum 6271.8 11.4 6.78 358 55.8 11 1.720 Minimum 6261.6 6.6 5.96 74 1.8 3 0.026 Average 6267.4 8.7 6.29 130 13.3 6 0.389 #Years 33 33 33 33 33 27 33 SOUTH TAHOE PUBLIC UTILITY DISTRICT 1/26/2018 Site: MW07-50 WATER QUALITY DATA Area: Emergency Pond MONITORING WELLS Mean Sea Temp EC Chloride COD, NO3-N Date Level C pH umhos mg/L mg/L mg/L Comments 01/31/17 6277.52 6:9 , 4.73 190 11.8 0.457 04/20/17 6281.90 7.5 7.69 182 11.0 0.437 07/18/17 6282.28 9.3 7.64 170 10.9 . 0.429 10/18/17 6281.29 7.4 7.43 182 11.0 0.449 Maximum 6282.28 9.3 7.69 190 11.8 0 0.457 Minimum 6277.52 6.9 4.73 170 10.9 0 0.429 Average 6280.75 , 7.8 6.87 181 11.2 0.443 4 4 1-4 4 4 0 4 Mean Sea Temp EC Chloride COD NO3-N. Year Level C pH umhos mg/L mg/L mg/L Comments 1984 6282.7 1985 1986 6280.7 1987 6277.4 7:4 6.61 293 28.2 6 0:570 1988 6274.1 7.6 6.64 291 28.3 8 0.560 1989 6271.1 7.6 6.65 287 28.7 6 0.580 1990 6273.3 7.0 6.69 287 28.3 6. 0.609 1991 6270.8 7.7 6.83 287 30.3 7 0.492 1992 6268.8 6.7 6.71 282 29.8 6 0.497 1993 6270.9 7.6 6.67 297 29.3 7 0.484 1994 6272.5 8.2 6.68 287 29.2 8 0.527 1995 6275.2 7.6 6.81 282 30.0 8 0.548 1996 6279.2 8.1 6.48 281 28.9 4 0.560 1997 6281.1 8.2 6.50 278 28.4 4 0.560 1998 6280.2 8.0 6.34 274 27.8 < 5 0.610 1999 6280.2 8.1 6.28 268 25.9 5 0.590 2000 6279.1 7.9 6.53 260 25.2 5 0.620 2001 6277.4 7.9 6.43 251 24.1 5 0.610 2002 6276.3 7.8 6.41 247 22.2 7 0.570 2003 6276.3 8.1 6.36 244 21.7 5 0.580 2004 6276.2 7.7 6.37 234 20.9 6 0.600 2005 6277.3 7.7 6.55 228 20.1 13 .0.558 2006 6279.8 8.5 6.57 227 18.7 10 0.545 2007 6278.5 8:0 6.20 237 .18.6 7. 0.565 2008 6277.2 8.7 6.41 232 18.3 5 0.556 2009 6276.5 8.0 6.41 223 17.6 7 0.544 2010 6276.8 8.1 6.34 216 16.3 8 0.534 2011 ,. 6279.1 8.0 6.32 206 15.1 7 0.493 2012 6278.5 8.1 6.77 202 14.8 0.525 2013 6277.2 8.3 6.55 198 13.9 0.505 2014 6275.9 8.2 6.79 196 13.8 0.490 2015 6275.2 9.5 7.30 196 12.8 0.469 2016 6274.3 8.8 7.11 194 12.7 0.467 2017 6280.8 7.8 6.87 181 11.2 0.443 Maximum 6282.7 9.5 730 297 30.3 13 0.620 Minimum 6268.8 6.7 6.20 181 11.2 4 0.443 Average 6276.7 8.0 6.59 247 22.3 7 0.544 #Years 33 31 31 31 31 25 31 SOUTH TAHOE PUBLIC UTILITY DISTRICT 1/26/2018 Site: MW08-25 WATER QUALITY DATA Area: Treatment Plant MONITORING WELLS Mean Sea Temp EC Chloride COD NO3-N Date Level C pH -umhos mg/L mg/L mg/L Comments 01/26/17 6247.72 8.3 5.76 247 7.7 1.130 .04/11/17 6250.20 " 7.6 5.98 141 4.5 < 0.010 07/18/17' 6248.66 10.9 6.41 324 11.6 0.015 10/18/17 6247.60 12.8 6.71 679 21.5 < 0.020 Maximum 6250.20 12.8 6.71 679 21.5 0 1.130 Minimum 6247.60 7.6 5.76 141 4.5 0 < 0.010 Average 6248.55 9.9 . 6.22 348 11.3 0.294 4 4 4 4 4 0 4 Mean Sea Temp EC Chloride COD NO3-N Year Level C p.H umhos mg/L mg/L mg/L Comments 1984 6246.0 9.2 6.30 .878 136.1 75 -0.250 1985 6247.8 9.9 6.41 876 143.0 72 0.570 1986 6247.2 9.8 6.38 878 126.4 72 0.570 1987 6246.5 9.2 6.28 811 119.0 59 0.280 1988 6247.4 9.4 6.37 828 102.0 57 0.180 1989 6247.7 10.2 6.33 753 101.0 57 0.080 1990 6247.4 9.3 6.35 742 93.5 50 0.094 1991 6246.8 8.7 6.40 701 84.8 43 0.067 1992 6246.6 8.0 6.50 766 73.1 56 0.064 1993 6246.9 8.8 6.38 715 54.9 61 0.014 1994 6246.8 9:5 6.35 827 50.1 65 < 0.010 1995 6248.5 8.9 6.48 830 41.2 72 0.020 1996 6248.3 9.8 6.39 940 .42.3 81 0.030 1997 6248.2 10.1 6.33 971 51.3 76 0.010 1998 6248.2 9.7 6.24 1016 50.2 79 0.020 1999 6248.2 9.7 6.25 1017 49.9 85 < 0.010 2000 6247.3 10.2 6.36 1011 50.3 87 < 0.010 2001 6246.4 10.0 6.38 1017 - 51.3 86 0.040 2002 6246.5 10.0 6.34 967 41.3 90 0.030 2003 6246.8 9.9 6.44 960 36.6 91 0.020 2004 6246.3 9.7 6.43 907 32.4 93 0.020 2005 6247.4 9.4 6.47 828 29.7 90 0.026 2006 6247.9 9.7 6.47 918 27.7 92 0.018 2007 6246.5 10.3 6.37 956 27.6 102 0.018 2008 6244.7 10.8 6.55 872 22.9 93 0.021 2009 6245.5 10.3 6.18 759 20.1 77 2.988 2010 6246.4 9.3 5.80 528 21.7 48 5.659 2011 6247.4 9.3 5.96 489 12.2 26 0.140 2012 6246.4 9.7 6.28 724 ° 17.8 0.074 2013 6245.2 10.4 6.54 823 17.6 0.016 2014 6245.1 10.0 6.34 690 20.3 0.795 2015 6244.3 10.6 6.43 761 19.5 0.011 2016 6246.0 9.5 5.75 430 17.5 6.728 2017 6248.6 9.9 6.22 348 11.3 0.294 Maximum 6248.E 10.8 6.55 1017 143.0 102. 6.728 Minimum 6244.3 8.0 5.75 348 11.3 26 0.010 Average 6246.9 9.7 6.33 810 52.8 73 0.564 S #Years 34 34 34 34 " 34 28 34 SOUTH TAHOE PUBLIC UTILITY DISTRICT 1/26/2018 Site: MW11 WATER QUALITY DATA Area: Buried Sludge MONITORING WELLS Mean Sea Temp EC Chloride COD NO3-N Date Level C pH umhos mg/L mg/L mg/L Comments 01/26/17 6259.23 8.4 6.74 112 1.45 0.377 04/11/17 6263.99 9.2 6.27 284 33.80 0.106 07/18/17 6270.18 10.2 6.33 213 25.00 0.065 10/18/17 6269.89 8.7 6.33 243 29.10 0.053 Maximum 6270.18 -" 10.2 6.74 284 33.80 0 0.377 Minimum 6259.23 . 8.4 6.27 112 1.45 0 0.053 Average 6265.82 9.1 6.42 213 22.34 0..150 4 4 4 4 4 0 4 Mean Sea Temp EC Chloride COD NO3-N Year Level C pH umhos mg/L mg/L mg/L Comments 1984 1985 1986 1987 1988 1989 1990 1991 1992 6257.3 8.9 7.25 159 1.4 5.820 1993 6257.5 9.1 7.15 202 1.0 9.220 1994 6258.5 8.1 7.13 172 0.9 5.830 1995 6260.7 8.8 6.98 139 1.5" 3.080 1996 6265.0 8.7 6.74 97 1.7 '0.170 1997 6268.7 9.3 6.77 88 1.7 0.120 1998 6268.5 8.6 6.53 86 1.2 0.300 T999 6269.2 8.4 6.46 81 1.2 6 0.120 2000 6267.5 .8.5. 6.84 78 0.9 5 0.100 2001 6264.4 8.6' 6.73 81 1.1 5 0.070 2002 6262.3 8.5 6.67 100 1.4 7 0.160 2003 62'61.1 8.8 6.73 103 1.5 6 0.180 2004 6261.8 4.7.. 5.70 59 0.7 3 0.260 2005 6262.2 9.2 6.83 108 1.2 11 0.563 2006 6266.5 9.4 6.54 136 1.7 9 0.228 2007 6266.1 9.0 6.42 132 2.5 8 0.218 2008 6263.9 9.5 6.63 119 1.6 5 0.165 2009 6262.1 10.2 6.56 110 1.4 7 0.184 2010 6261.1 9.1 6.64 113 1.3 7 0.163 2011 6264.0 9.1 6.40 1,59 4.2 8 0.120 2012 6264.9 9.5 6.28 170 5.7 0.114 2013 6263.0 9.4 6.56 139 2.7 0.116 2014 6261.3 9.3 6.66 131 2.5 0.101 2015 6259.9 10.0 6.44 123 1.8 0.123 2016 6259.1 10.7 6.39 109 1.5 0.308 2017 6265.8 9.1 6.42 213 22.3 0.150 Maximum 6269.2 10.7 7.25 213 22.3 11 9.220 Minimum 6257.3 4.7 5.70 59 0.7 3 0.070 Average 6263.2 8.9 6.63 123 2.6 7 1.076 4 Years 26 26 26 .26 26 13 26 SOUTH TAHOE PUBLIC UTILITY DISTRICT 1/26/2018 Site: MW12 WATER QUALITY DATA Area: Buried Sludge MONITORING WELLS Mean Sea Temp EC Chloride COD NO3-N Date Level C pH umhos mg/L mg/L mg/L Comments 01/31/17 6261.32 9.6 6.41 1223 8.12 34.30 04/11/17 6267.34 10.2 6.44 1077.0 20.80 21.200 07/18/17 6266.04 12.3 6.57 795.0 17.80 15.20 10/18/17 6265.08 11.5 6.51 734 33.80 9.94 Maximum 6267.34 12.3 6.57 1223 33.80 0 34.30 Minimum 6261.32 9.6 6.41 734 8.12 0 9.94 Average 6264.95 10.9 6.48. 957 20.13 20.16 4 4 4 4 4 0 4 Mean Sea Temp EC Chloride COD NO3-N Year Level C pH umhos mg/L mg/L mg/L Comments 1984 1985 1986 1987 1988 1989 1990 1991 1992 6259.7 10.2 6.46 169 2.9 1.55 1993 6261.1 9.8 6.47 500 6.4 4.72 1994 6260.5 9.0 6.42 353 3.8 4.22 1995 6263.7 9.3 6.60 646 5.6 4.03 1996 6265.4 9.4 6.48 477 4.3 3.23 1997 6266.8 10.1 6.57 257 3.0 , 0.79 1998 6266.4 9.2 6.31 205 2.9 0.35 1999 6266.7 8.7 6.16 167 ` 2.3 8 0.17 2000 6265.6 8.9 6.42 143 1.9 6 0.21 2001 6262.7 9.1 6.47 105 1.8 6 0.43 2002 6262.3 9.5 6.19 113 1.6 6 0.56 2003 6262.4 9.6 6.18 155 2.0 6 0.93 2004 6262.4 9.2 6.25 186 2.0. 6 1.85 2005 6262.7 10.0 6.27 311 3.3 12 2.49 2006 6265.6 10.7 6.43 648 5.1 15 2.61 2007 6263.8 10.5 6.18 323 3.0 9 1.74 2008 6262.5 10.8 6.28 228 2.3 6 1.18 2009 6261.6 12.1 6.25 265 2.3 9 1.43 2010 6261.5 10.3 6.34 368 2.8 8 3.67 2011 6263.8 11.4 6.41 696 7.4 13 7.45 2012 6263.0 10.9 6.44 382 8.2 3.31 2013 6262.0 12.3 6.39 283 5.9 1.45 2014 6260.8 11.7 6.45 327 4.3 3.57 2015 6259.0 9.2 6.63 133 1.3 1.44 2016 6259.1 12.4 6.54 937 6.8 38.10 2017 6265.0 10.9 6.48 957 20.1 20.16 Maximum 6266.8 12.4 6.63 957 20.1 15 38.10 Minimum 6259.0 8.7 6.16 105 1.3 6 0.17 Average 6262.9 10.2 6.39 '359 4.4 8 4.29 #Years 26 26 26 26 26 13 26 SOUTH TAHOE PUBLIC UTILITY DISTRICT 1/26/2018 Site: MW13 WATER QUALITY DATA Area: Buried Sludge MONITORING WELLS Mean Sea Temp EC Chloride COD NO3-N Date Level C pH umhos mg/L mg/L mg/L Comments 01/26/17 6258.08 5.0 7.14 963 17.2 22.00 04/11/17 6259.70 4.9 7.13 856 9.7 14.60 07/18/17 6257.70 9.6 7.19 718 27.4 4.08 10/18/17 6256.69 9.8 7.40 711 32.4 3.90 Maximum 6259.70 9.8 7.40 963 32.4 0 22.00 Minimum 6256.69 4.9 7.13 711 9.7 0 3.90 Average 6258.04 7.3 7.22 812 . 21.7 11.15 4 4 4 4 4 0 4 Mean Sea Temp EC Chloride COD NO3-N Year Level C pH umhos mg/L mg/L mg/L Comments 1984 1985 1986 1987 1988 1989 1990 1991 1992 6255.0 8.9 6.82 1071 12.1 6.79 1993 6256.8 7.3 6.85 1310 6.3 43.39 1994 6255.3 7:8 6.82" 942 6.3 17.72 1995 6257.4 7.2 6.83 1053 5.9 20.43 1996 6257.9 7.9 6.85 827 3.6 8.71 1997 6257.9 8.4 6.79 814 4.9 6.16 1998 6258.0 7.6 6.78 802 3.7 5.16 1999 6257.9 7.4 6.88 746 4.0 23 4.23 2000 6257.1 6.7 6.91 689 2.9 14 2.57 2001 6255.8 6.8 6.76 708 4.3 19 3.99 .2002 6256.2 7.1 6.90 801 4.2 21 10.08 2003 6256.8 7.5, 6.95 904 4.6 21 14.79 2004 6256.5 7.6 6.86 666 4.1 19 10.62 2005 6257.2 7.6 7.04 728 5.4 21 10.27 2006 6257.5 8.2" 6.83 828 4.0 23 10.71 2007 6256.5 7.8 6.89 748 4.9 19 9.65 2008 6256.9 9.0 6.91 722 6.4 14 10.04 2009 6255.2 8.1 6.89 674 9.1 17 8.93 2010 6256.4 7.7 6.95 750 9.8 20 14.14 2011 6257.2 8.1 6.80 844 15.4 23 17.37 2012 6256.0 7.6 7.00 685 19.4 11.04 2013 6255.8 8.8 7.17 695 19.2 7.03 2014 6255.3 8.7 7.03' 615 18.5 4.18 2015 6254.0 9.0 6.82 617 20.9 2.50 2016 6256.1 8.5 6.79 744 23.2 21.59 2017 6258.0 73 7.22 812 21.7 11.15 Maximum 6258.0 9.0 7.22 1310 23.2 23 43.39 Minimum 6254.0 6.7 6.76 615 2.9 14 2.50 Average 6256.6 7.9 6.90 800 9.4 20 11.28 ##Years 26 26 26 26 26 13 26 SOUTH TAHOE PUBLIC UTILITY DISTRICT 1/26/2018 Site: ERB_ WATER QUALITY DATA Area: Emergency Pond MONITORING WELLS Mean. Sea .:Temp EC Chloride COD NO3-N Date Level C pH umhos mg/L mg/L mg/L Comments 01/13/17 1.1 7.18 168 15.4 0.188 01/20/17 2.2 6.78 66 4.4 0.030 04/01/17 0.0 6.57 23 Maximum 0.00 2.2 7.18 168 15.4 0 0.188 Minimum 0.00 0.0 6.57 23 4.4 0 0.030 Average 1.1 6.84. 86 9.9 0.109 0 3 3 3 2 0 2 Mean Sea ..Temp EC Chloride COD NO3-N Year Level C pH; umhos m /L m /L m /L Comments 1984 1985 1986 9.0 7.35 622 81.2 66 0.580 1987 10.7 7.30 575 62.1 192 0.200 1988 4.6 6.50 713 108.9 35 1.240 1989 1990 6.85 325 25.8 125 0.080 1991 1992 1993 ,17.1 7.15 551 64.6 46 0.210 1994 20.7 9.47 484 72.2 20 0.100 1995 16.6 7.90 470 55.0 48 0.060 1996 12.2 7.33, 434 40.9 29 0.540 1997 8.1 7.14 415 44.2 45 0.070 1998 21.9 6.63 556 44.9 24 0.040 1999 Dry 2000 2001 18.9 7.91 596 60.2. 42 0.120 2002 Dry 2003 Dry 2004 3.0 3.37 174 20.2 9 0.040 2005 15.4 7.59 599 57.9 39 0.798 2006 16.78 MG stored 2007 Dry 2008 3.51 MG stored 2009 16.4 7.25 569 60.4 61 0.084 2010 19.6 7.81 629 45 2011 4.8 7.63 481 37.4 26. 0.108 2012 Dry 2013 ' Dry 2014 14.4 7.47 607 67.3 0.423 2015 Dry 2016 17.5 7.56 678 64.7 1.332 2017 1.1 6.84 86 9.9 0.109 Maximum 0.0 21.9 9.47 713 108.9 192 1.332 Minimum 0.0 1.1 3.37 86 9.9 9 0.040 Average 12.9 7.21 503 54.3 53 0.341 #Years 0 18 19 19 18 16 18 ERB-and Plant Monitoring Wells WATER LEVEL WATER LEVEL Mean Sea Level Mean Sea Level' 6295 6290 6285 6290 6280 AL AL 6285 AL 6275 6280 6270 d 6275 6265 LL MJ LL 6260 6270 6255 6265 6250 6260 6245 6255 6240 V' 10 (D h a0 O O N 1 M 7 m (O (- w O O N M 0 CO h aD O O r N cn V' N (O (— R co co O N 7 f0 c0 O N R m OD O N V f0 OD OD OD f0 OD cD O w m m m m m m m O O O O O O O O O O O 9 CD OD O O) O Of m O O O O O m m m m m m m m m m m m m m m m O O O O O O O O O O O_ O O O O O O O m N N N N N N N N N r r r r r r r r r r N N N N N N N N N N N N N N N N N N --+—Control MW01.5 --* -MW02 MW03 --♦—MW04 — MW07 —}-MW08 NITRATE-NITROGEN NITRATE-NITROGEN 30 5 25 4 20 3 15 E E 2 10 1 5 a_A 0 (D aD O N V (D c0 O N '7 (D N O N et (D 0 eF co OD O N a' (D aD O N of co coA O N (D _ CEO{ aD OD m m m m m O O O O •O co aD ao m m m m m O O O O O 0] m m m m m m m O O O O O O O O O m m m m m m m m O O O O O O O O O r r r r r r r N N N N N N N N N r r r r r r r r N N N N N N N N N —�Control --+—MW01.5 —+--MW02 --f—MW03 MW04 MW07 MW08 ERB and Plant Monitoring Wells CHLORIDES CHLORIDES 100 150 140 fe 90 130 80 120 110 70. 100 60 90 J J 80 50 E E 70 40 60 77�7� 50 30 40 oe- 20 30 20 10 10 O CD co O N (O c0 O N O m O N V t0 O v co O O N r O co O N et coOD 'mN co co co a) a) .W O O CD O O m co co O CD0) m CD O O O O O O O O O O O O N N N N N N N N N O O O O O O O O O O O O O O O O O r r r �... .... r r r r r r r r r r r N N N N N N N N N —�—Control —w—MW01.5 —&---MW02 MW03 MW04 MW07 MW08 CONDUCTIVITY CONDUCTIVITY 1000 1200 90o 1000 800 700 800W4700e 600 N m 500 ,0 600 E 3 400 4 300 00 200 zoo 27 100 0 0 (O 00 O N 'T to O O N R - to CD O N v (0 v co co 'm N (O m O N (O coO N CO oD co co m rn rn m m O O O O o co m co CD rn m m CD O O O O rn rn rn rn F rn rn rn O O CD O CD E; 0 0 o rn rn rn rn rn rn rn rn O O O O O o 0 0 0 r r r r r r r N N N N N N N N N r r r r r r r r N N N N N N N N N --�Control —i--MW01.5 MW02 MW03 MW04 —*--MW07 MW08 Buried Monitoring Wells WATER LEVEL NITRATE-NITROGEN Mean Sea Level 50 6280 45 6275 40 35 6270 30 6265 25 d d E LL 6260' 20 15 1A 6255 10 6250 5 6245 0 N (h In (O (._ m m O N M v In co I-- co m O N M M (O (� N O V In (O I- CO m O N M t I!') (O f- m m O N C) V Ln CO f— m m m m m m m m O O O O O O O O O O ' m m m m m m m m O O O O O O O O O O m Nmmm •mm O O O O O O O O O O O O O O O O O mTm — m mm N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N ♦—MW11 - -MW12 —a—MW13 - -MW11 —+—MW12 MW13 CHLORIDES CONDUCTIVITY 25 1500 1400 1300 20 1200 1100 1000 15 900 J O 800 700 AL A 10 600 500 400 5 JIL A 300 200 100 0 N (h V' In co t, co m O N co [t (ff (O f- CO m O N m IO f0 f- O N Cal In (O I- CAD m O N m w In (O f._ co m O �— N (n V N (O f- m m m m m m m m O O O O O O O O O O m m m m m m m m O O O O O O O O O O m m m m m m m m O Co O O O O O O O O O O O O O O O O m m m m m m m m N N N N N N N N N N N N N N N N N N i-- �-- �— N N N N N N N N N N N N N N N N N N MW 11 MW 12 MW 13 ---o—MW 11 --*--MW 12 --m—M W 13 HARVEY PLACE RESERVOIR SOUTH TAHOE PUBLIC UTILITY.DISTRICT HARVEY PLACE RESERVOIR-DATA SUMMARY From: January 1,2017 To: December 31,2017 Temp NH3.+ NH3-N Org-N TKN NO3-N NO2-N Total N PO4-P Total P Alk MBAS D.O. D.O.% Date pH C NH4 mg/I mg/I mg/I mg/I mg/I mg/L mg/I mg/I mg/I mg/I mg/I Saturation 01/18/17 2.2 13.70 0.079 1.50 15.2 1.49 0.47 17.20 1.73 1.97 106 8.70 77.80 02/01/17 7.83 3.3 15.70 0.114 0.00 13.6 1.34 0.44 15.40 1.78 1.96 110 9.12 83.6 03/01/17 8.42 5.2 11.50 0.370 3.50 15.0 0.98 026 16.20 1.36 1.29 89 10.10 99.1 04/04/17 8.32 11.0 11.40 0.459 1.10 12.5 0.93 0.16 13.60 1.29 1.43 91 13.00 144.0 05/03/17 7.85 15.1 9.93 0.190 1.37 11.3 1.17 0.13 12.60 1.43 1.45 90 9.42 114.0 06/07/17 7.04 21.6 9.29 0.045 1.31 .10.6 1.41 0.30 12.30 1.35 1.56 91 6.32 87.8 07/12/17 7.33" 22.0 7.73 0.075 2.21 9.9 2.51 0.85 13.30 1.62 1.72 85 5.7-1 79.9 08/01/17 8.26 '22.5 6.32 0.502 3.78 10:1 3.48 0.62 14.20 1.76 2.27 81 7:05 98.5 09/07/17 6.79 19.8 5.41 0.013 3.1.49 36.9 2.63 4.56 44.10 2.00 6.95 77 1.93 25.9 10/11/17 7.80 12.1 22.20 0.302 3.30 25.5 1.04 0.77 27.30 2.36 2.97 158 8.21 76.5 11/01/17 8.11 10.6 18.90 . 0.462 5.10 24.0 1.16 1.02 26.20 2.60 2.88 154 13.30 146.2 11/08/17 . 8.44 9.7 12/05/17 7.33 5.2 19.40 0.052 3.50 22:9 1.98 0.62 25.50 2.25 2.48 148 7.60 72.0 12/13/17 7.69 4.0 12/28/17 7.62 5.9 8.44 83.0 Maximum 8.44 22.5 22.20 0.502 31.49 36.9 3.48 4.56 44.10 2.60 6.95 158 13.30 146.2 Minimum 6.79 2.2 5.41 0.013 0.00 9.9 0.93 0.13 12.30 1.29 1.29 77 1.93 25.9 Average 7.77 11.3 12.62 0.222 4.85 17.3 1.68 0.85 19.83 1.79 2.41 107 8.38 91.4 #Years 14 15 12 12 12 12 12 12 12' 12 12 12 0 13 13 SOUTH TAHOE PUBLIC UTILITY DISTRICT HARVEY PLACE RESERVOIR DATA SUMMARY From: January 1,2017 To: December 31,2017 Water COD BOD CL- TDS S.S. Turb EC Ca Na Mg SAR Level Flow % Ice Date mg/I mg/I mg/I mg/I mg/I NTU us/cm mg/I mg/I mg/I ft. acre-ft Cover 01/18/17 4.44 36.2 192 43.40 15.00 392 14.3 36.1 3.46 2.22 45.5 1 02/01/17 2.94 37.2 201 10.40 7.80 423 13.7 36.6 3.32 2.30 48.5 85 03/01/17 2.92 30.2 166 2.86 4.80 357 12.3 29.9 2.90 1.99- 57.5 0 04/04/17 4.28 27.0 .169 3.30 1.70 346. 13.0 32.3 2.83 2.12 59.8 0 05/03/17 2.11 37.1 176 2.16 2.00 371 13.8 32.8 3.14 2.07 57.0 0 06/07/17 12.30 39.1 185 29.60 15.00 415 14.5 35.5 3.39 2.18 54.0 0 07/12/17 10.10- 45.7 202 8.54 3.10 406 16.0 36.1 3.66 2.12 49.4 0 08/01/17 22.90 47.4 210 13.70 12.00 391 15.9 39.5 3.96 2.30 46.0 0 09/07/17 79.30 50.9 228 360.00 370.00 451 19.9 46.0 5.86 2.33 33.5 0 10/11/17 26.80 52.7 252 58.50 30.00 566 17.9 46.6 4.20 2.57 11.0 0 11/01/17 53.9 262 11.40 5.80. 568 19.3 50.1 4.46 2.67 18.0 0 11/08/17 12.60 558 21.0 0 12/05/17 4.79 48.7 242 6.72 2.00 556 19.1 46.3 4.37 2.48 30.0 0 12/13/17 1.80 598 32.0 1 12/28/17 4.46 593 34.5 0 Maximum 0.0 79.30 53.9 262 360.00 370.00 598 19.9, 50.1 5.86 2.67 59.8 0 85 Minimum 0.0 2.11 27.0 166 2.16 1.70 346 12.3 29.9 2.83 1.99 11.0 0 0 Average 14.61 42.2 207 45.88 36.23 466 15.8 39.0 3.80 2.28 39.8 6 #Years 0 13 12 12 12 13 15 12 12 12 12 15 0 15 r SOUTH TAHOE PUBLIC UTILITY DISTRICT HARVEY PLACE RESERVOIR DATA SUMMARY From: January 1,2017 To: December 31,2017 Coliforms Fecal Air Algae Weeds Total Fecal/E.coli Strep Temp SO4 Boron Date MPN MPN MPN C mg/L mg/L Comments 01/18/17 No No 12,240 152.9 5.9 12.6 02/01/17 No Yes 27750 2 6.6 12.1 03/01/17 No No 276 < 1 2.2 9.6 . 04/04/17 Yes No 127 < 1 11.5 9.8 05/03/17 Yes Yes 1,624 1 10.0 9.8 06/07/17 Yes Yes 15,000 4.1 22.2 10.4 07/12/17 Yes Yes > 241,920 < 1 21.5 .10.8 08/01/17 Yes Yes 29,090 7.4 23.5 11.0 09/07/17 Yes No 2,187 262.0 24.0 13.0 10/11/17 Yes No 1,785 5.2 13.5 15.9 11/01/17 Yes No 365 4.1 9.0 18.3 11/08/17 Yes Yes 12.3 12/05/17 No No 2,755 < 1.0 2.8 17.3 12/13/17 No No 13.7 12/28/17 Yes No Maximum > 241,920 262.0 24.0 18.3 0.00 Minimum 127 < 1.0 2.2 9.6 0.00 Average 25,843 36.9 12.8 12.5 #Years 15 15 12 12 14 12 0 SOUTH TAHOE PUBLIC UTILITY DISTRICT - HARVEY PLACE RESERVOIR DATA SUMMARY From: 1989 To: 2017 Temp NH3+ NH3-N Org-N TKN NO3-N NO2-N Total N PO4-P Total P Alk MBAS D.O. D.O. Year pH C NH4 mg/I mg/I mg/I mg/I mg/I mg/L mg/I mg/I mg/I mg/I mg/I %SAT 89 8.10 13.6 8.59 0.264 1.63 10.22 4.94 0..14 15.29 1.94 2.21 70 0.040 8.64 101.02 90 8.40 14.5 6.71 1.012 4.58 11.30 5.86 0.22 17.37 2.73 3.20 72 0.080 8.51 102.85 91 7.72 13.9 2.78 0.103 1.63 4.41 9.93 0.27 14.61 2.52 2.89 53 0.060 7.23 87.49 92 7.73 14.3 4.69 0.083 1.61 6.30 8.25 0.32 14.87 3.60 3.86 61 0.070 7.30 86.26 93 7.76 12.3 7.84 0.119 1.20 9.04 5.03 0.23 14.30 2.90 3.05 70 0.060 7.49 84.49 94 7.60 11.1 15.53 0.223 1.66 16.82 2.85 0.32 19.99 3.16 3.1`8 118 0.080 7.25 80.39 95 7.82 13.0 16.25 0.308 2.86 18.55 0.82 0.13 19.51 2.26 2.49 119 0.060 8.11 93.85 96 7.80 13.8 14.06 0.472 1.88 15.85 1.12 0.27 .17.24 2.06 2.13 116 0.060 7.44 89.74 97 7.71 12.2 12.26 0.165 0.88 12.28 1.37 0.23 13.88 1.77 2.03 100 0.030 7.48 83.93 98 7.65 11.7 13.90 15.58 1.73 0.31 17.63 2.27 2.28 110 0.070 7.83 90.18 99 7.51 12.3 14.47 0.121 1.78, 15.69 1.39 0.34 17.42 2.05 2.26 106 0.060 6.63 69.93 00 7.95 12.9 15.74 0.696 2.83 18.23 0.93 0.31 19.47 2.26 2.50 110 0.070 8.29 99.53 01 7.94 12.8 15.57 0.608 2.10 . 17.51 1.26 0.49 19.26 2.33 2.57 107 8.36 103.10 02 7.79 13.2 12.87 0.408 2.33 15.21 2.10 0.52 17.83 2.22 2.51 99 8.64 104.13 03 7.76 12.5 15.98 0.287 2.49 18.29 1.20 0.56 20.05 2.26 2.44 113 7.31 77.82 04 7.85 11.9 17.37 0.477 19.57 1.10 0.31 20.84 2.55 2.75 116 7.52 75.17 05 7.96 11.6 15.21 0.617 1.28 16.23 1.16 0.36 17.76 2.66 2.70 130 8.63 97.22 06 7.68 11.9 14.57 0.391 1.68 16.23 0.93 0.21 17.37 2.22 2.36 127 8.37 92.53 07 8.41 .12.5 16.72 1:456 2.35 19.26 0.56 0.29 20.11 2.85 3.06 151 9.65 104.52 08 8.21 11.2 15.05 0.974 1.55 16.60 1.69 0.62 18.91 2.86 3.08 133 7.82 82.84 09 8.07 11.1 16.56 0.526 1.70 18.10 1.97 0.51 20.58 2.87 3.07 139 6.82 76.61 10 7.93 10.7 15.92 0.430 0.38 15.07 1.75 0.54 17.35 2.58 2.79 140 6.66 71.41 11 7.90 11.3 12.64 0.430 2.49 14.97 1.96 0.72 17.65 2.00 2.26 117 7.38 82.91 12 7.60 12.0- 15.36 0.291 17.00 18.20 2.90 0.61 21.70 2.53 2.59 133 6.54 72.70 13 8.17 11.4 12.02 0.943 5.51 17.53 3.87 0.60 22.01 2.13 2.44 113 8.97 94.88 14 8.23 11.3 14.45 1.106 2.50 16.95 2.80 0.49 20.24 2.56 2.98 130 7.37 77.79 15 7.86 12.0 15.23 0.388 2.63 17.86 4.84 0.45 23.13 2.64 2.87 124 8.55 95.65 16 7.59 12.8 15.87 0.243 2.37 18.23 3.21 0.77 22.18 2.61 2.91 130 8.46 95.98 17 7.77 11.3 12.62 0.222 4.85 17.30 1.68 0.85 19.83 1.79 2.41 107 8.38 91.41 Maximum 8.41 14.5 17.37 1°.456 17.90 19.57 9.93 0.85 23.13 3.60 3.86 151 0.080 9.65 104.52 Minimum 7.51 10.7 2.78 0.083 0.38 4.41 0.56 0.13 13.88 1.77 2.03 53 0.030 6.54 69.93 Average 7.88 12.3 13.34 0.477 2.84 15.43 2.73 0.41 18.56 2.46 2.69 111 0.062 7.85 88.49 #Years 29 29 29 28 27 29 29 29 29 29 29 29 12 29 29 SOUTH TAHOE PUBLIC UTILITY DISTRICT HARVEY PLACE RESERVOIR DATA SUMMARY From: 1989 To: 2017 Water COD BOD CI" TDS SS Turb EC Ca Na Mg SAR Level Flow % Ice Year mg/I mg/I mg/I mg/I mg/I NTU us/cm mg/I mg/I mg/I ft. acre-ft Cover 89 25.3 2.'95 89.2 357 21.37 18.87 635 19.6 92.9 3.26 4.88 38.05 491 5 90 32.4 4.92 93.5 355 9.33 5.82 616 16.6 86.2 3.41 5.04 40.94 303 4 91 23.9 3.82 91.7 369 20.36 5.99 595 16.4 84.3 3.55 4.91 38.50 4 92 28.0 4.25 72.0 312 7.83 3.88 496 16.2 72.7 3.28 4.31 39.08 6 93 29.1 5.92 53.2 241 29.42 5.63 413 14.9 45.5 3.26 2.71 42.48 17 94 27.8 6.01 70.2 268 7.56 3.82 548 18.5 53.3. 3.86 2.94 38.43 10 ` 95 25.1 4.70 50.8 226 7.09 3-.87 482 16.3 41.3 3.53 2.41 42.54 1 96 23.7 4.53 47.3 225 4.81 3.53 462 16:4 46.4 3.58 2.70 43.75 0 97 18.6 .2.93 44.5 205 7.07 5.98 415 14.8 38.0 3.38 2.28 45.44 0 98 20.6 3.53 49.6 226 5.20 3.67 461 15.0 43.4 3.31 2.64 41.92 12 99 4 27.7 4.19 48:8 221 11.53 5.25 450 i 14.4 42.1 3.42 2.59 40.74 2 00 31.9 6.21 53.6 227 16.80 3.67 466 15.7 44.6 3.53 2.68 40.98 0 01 43.8 5.79 61.3 243 26.09 7.40 490 16.2 45.8 3.68 2.67 40.93 3 02 29.7 5.23 57.5 237 9.32 4.04 466 15.4 44.8 3.51 2.68 37.39 0 03 31.3 4.75 56.8 235 8.38 4.14 484 15.3 45.2 3.53 2.71 40.90 0 04 31.3 4.53 57.9 236 5.81 4.08 504 16.0 43.5 3-.69 2.54 38.15 3 05 35.9 6.81 52.7 242 11.57 4.48 447 16.4 46.4 3.50 2.70 38.66 16 06 39.9 7.35 44.3 222 17.56 12.67 397 14.5 42.4 3.29 2.60 38.80 12 07 45.3 9.14 53.3 257 13.78 7.40 515 17.1 54.1 3.80 3.08- 36.81 1 08 47.0 9.62 52.6 248 14.55 8.09 495 16.2 52.1 3.73 3.03 37.73 8 09 40.2 7.48 50.9- 251 8.97 5.17 530 16.7 52.8 3.92 2.95 37.74 0 10 40.8 8.42 48.5 247 8.41 5.14 514 16.8 24.0 4.07 1.37 39.29 12 11 39.8 8.14 42.6 218 24.21 12.21 435 16.2 22.4 3.71 2.50 41.22 8 12 8.13 50.2 245 21.83 6.58 501' 17.3 49.9 3.78 2.83 34.83 0 13 9.01 48.7 246 17.10 8.06 457 17.3 49.5 3.81 2.80 37.24 13 14 8.53 51.6 259 12.69 6.71 516 18.0 52.3 4.06 2.89 39.46 5 15 11.52 52.2 269 62.20 10.78 534 18.0 53.4 4.20 2.95 32.40 5 16 7.57 56.5 257 17.91 4.86 536 18.2 53.5 4.11 2.94 37.33 10 17 14.61 42.2 207 45.88 36.23 466 15.8 39.0 3.80 2.28 39.85 6 Maximum 47.0 14.61 93.5 369 62.20 36.23 635 19.6 92.9 4.20 5.04 45.44 491 17 Minimum 18.6 2.93 42.2 205 4.81 3.53 397 14.4 22.4 3.26 1.37 32.40 303 0 Average 32.1 6.57 56.7 253 16.37 7.52 494 16.4 50.4 3.64 2.95 39.36 397 6 #Years 23 29 29 29 29 29 29 29 29 29 29 29 2 29 SOUTH TAHOE PUBLIC UTILITY DISTRICT HARVEY PLACE RESERVOIR DATA SUMMARY From: 1989 To: 2017 Coliforms Fecal Air Algae Weeds Total Fecal/E coli Strep Temp SO4 Boron Year MPN MPN MPN C mg/L mg/L Comments 89 125 7 60 17.2 90 275 3 17 18.2 42.8 - 0.32 91 64 4 30 17.1- 41.2 0.37 92 991 94 203 16.6 35.1 0.33 93 633 9 280 15.1 23.2 0.22 94 505 6 ` 422 11.4 26.8 0.26 95 107 14 112 12.9 24.2 0.17 96 374 11 97 16.0 19.9 0.19 97 2 < 2 < 2 5.9 13.1 0.08 98 192 4 56 7.5. 19.3 0.14 99 460 4 97 13.0 19.1 0.20 s 00 363 6 73 15.5 19.1 0.22 01 533 . 187 78 13.2 19.5 0.24 02 128 25 178 20.3 18.2 0.22 03 309 26 33 .13.0 19.3 0.19 04 204 20 28 12.4 17.9 0.25 05 1,516 46 1.94 13.5 16.8 0.24 -06 341 53 .168 = 14.5 14.3 0.16 07 111 57 34 12.5 15.4 0.22 - 08 197 35 164 14.0 16.4 0.24 09 393 16 6 12.1 17.6 0.17 10 539 83 5 . 10.4 16.2 0.18 11 477 8 29 9.9 13.0 0.15 12 745 168 30 11.7 17.1 0.16 13 556 18 20 13.6 16.7 0.16 14 403 47 52 10.4 16.4 0.19 15 24,369 77 12.6 20.1 0.22 16 171784 92 13.2 17.8 17 25,843 37 12.8 12,5 Maximum 25,843 187 422 20.3 42.8 0.37 Minimum 2 2 2 5.9 12.5 0.08 Average 2708 40 95 13.3 20.3 0.23 #Years 0 0 29 29 26 29 28 26 NO3-N&NH3-N Total Phosphorus 20 6 18 16 5 14 4 12 J J rn 10 rn 3 E E 8 F i• r 6 2 4 1 2 0 0 ° 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14*15 16 17 89 90 91 92 93 94 95 96 97f98 99 00 01 02 03 04 05'06 07 08 09 10 11 12 19 14 15 16 17 NO3-N —0 NH3-N A Total Phosphorus. Linear(Total Phosphorus) Chlorides Total Dissolved Solids 140 500 120 450 400 100 350 A-,AA 80 300 0 rn 250 77 Alk IlIg 111, 7........ E 60 E 200 40 150 1.00 20 50 0 p 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11.12 13 14 15 16 17 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 A Chlorides Linear(Chlorides) f TDS Linear(TII Harvey Place Reservoir Recycled Water Current Storage Not including 200+/-acre-foot dead pool Maximum Storage,Acre-feet: 3,800 Stored Remaining Date Acre-feet Acre-feet 01/01/15 643 3,157 02/01/15 953 2,847 03/01/15 1,248 2,552 04/01/15 1,448 2,352 05/01/15 1,626 2,174 06/01/15 1,744 2,056 07/01/15 1,395 2,405 08/01/15 693 3,107 09/01/15 91 3,709 10/01/15 67 3,733 11/01/15 217 3,583 12/01/15 446 3,354 01/01/16 743 3,057 02/01/16 1,185 2,615 03/01/16 1,493 2,307 04/01/16 1,875 1,925 05/01/16 2,104 1,696 06/01/16 2,322 1,478 07/01/16 2,139 1,661 08/01/16 1,304 2,496 09/01/16 595 3,205 10/01/16 72 3,728 11/01/16 243 3,557 12/01/16 479 3,321 01/0.1/17 940 2,860 02/01/17 1,843 1,957 03/01/17 3,082 718 04/01/17 3,460 34.0 05/01/17 3,005 795 06/01/17 2,617 - 1,183 07/01/17 2,210 1,590 08/01/17 1,626 2,174 09/01/17 878 2,922 10/01/17 114 3,686 11/01/17 220 3,580 12/01/17 544 3,256 E:\HPR\HPR Current Storage-Lahontan_ReportAs Harvey Place-Reservoir Recycled Water Storage 47000 31500 37000 a� 27500 a� L V a 21000 1,500 11000 500 0 _ _ _ _ _ _ _ LO,_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ fl-_ _ fl- N M - LO (D f` 00 O O r- N � N CO �t � Cfl 1` CO O O � N � N M � � Cfl (� 00 O O O O O O O O O O O O O O O O O O O O O O O O O Oc- ---+-Storage INDIAN CREEK RESERVOIR INDIAN CREEK RESERVOIR MONITORING Indian Creek Reservoir(ICR) is a 3,160 acre-foot capacity fresh water reservoir, located in the northeast portion of Alpine County, California (Figure 1). The ICR was constructed in 1967 for the temporary storage of treated wastewater. Since 1989, all make-up water for the ICR has been provided by fresh water diversions from Indian Creek and the West Fork of the Carson River. In 2002, the Lahontan Regional Water Quality Control Board (LRWQCB) adopted draft amendments to the water quality control plan for the Lahontan Region. These amendments included Interim Target and Final Target Total Maximum Daily Load (TMDL) numerical limits for five (5) indicator parameters at the ICR: Total Phosphorus (TP); Dissolved Oxygen (DO); Secchi Depth; Chlorophyll a; and Carlson Trophic State Index(TSI). In 2005, Alex Horne Associates consultant completed a pre-design for an in-reservoir oxygenation system (a hypolimnetic oxygenation system or HOS) for the ICR. Operation of the oxygenation system is designed to improve water quality by reducing phosphorus and chlorophyll a levels; improve fisheries habitat by increasing DO content within the hypolimnion; and lower the TSI of the ICR. ICR TMDL Objectives Target Value Target value Indicator Long Term Interim Total Phosphorus, m /L 0.02 0.04 Dissolved Oxygen: Not Depressed, percent or <_ 10 Saturation, percent or >_ 80 Concentration, mg/L >_ 7.0 30-day mean, mg/L 6.5 7-day minimum, mg/L 5.0 1-day minimum, m /L 4.0 Secchi Depth, meters >_ 2 >_ 2 feet >_ 6.6 >_ 6.6 Chlor h ll a, m /m3 _< 10 _< 10 Carlson Tro hic Status Index _< 45 < 45 The HOS is comprised of a Speece Cone, which was installed at ICR in Nov/December 2008. The equipment building, electrical and controls instrumentation installation was completed near the start of the 2nd quarter of 2009. Regular operation of the HOS started in June 2009. A " �ICR-07 z ICR-03� .•. .3 y IGR-1 i Image USQA Farm Sowtce AQrncy � - •.� ,� �� �e.9451t _ :.c.v Ima�e�y Date.May 25,2GG9 iat 38��4i 380' Ian•118.TT8387• alev 5645 tt Eye a4t 93;9 tt SOUTH TAHOE PUBLIC UTILITY DISTRICT INDIAN CREEK RESERVOIR DATA SUMMARY 2017 Secchi NH3+ Depth Total P D.O. D.O. Chlorophyll Depth NH4 NH3-N Org-N TKN NO3-N NO2-N Total N PO4-P Date Site Ft mq/I mg/1 %SAT mg/m3 ft. mg/L mg/1 mq/I mq/1 ma/I mg/1 mg/L mg/I 01/17/17 ICR-01 Frozen 02/01/17 ICR-01 Inaccessible 03/09/17 ICR-01 0.5 0.050 11.06 84.8 4.0 5.50 0.020 < 0.020 0.395 0.415 0.097 < 0.010 0.512 0.018 03/09/17 ICR-01 24.0 0.050 11.06 84.1 2.0 0.021 < 0.020 0.406 0.427 0.096 < 0.010 0.523 0.019 03/09/17 ICR-01 45.0 0.049 11.02 84.1 2.0 0.020 < 0.020 0.398 0.418 0.095 < 0.010 0.513 0.017 03/09/17 ICR-03 0.5 0.049 11.08 84.8 < 1.0 6.50 < 0.020 < 0.020 0.418 0.418 0.096 < 0.010 0.514 0.017 03/09/17 ICR-03 30.0 0.053 11.05 84.1 < 1.0 < 0.020 < 0:020 0.415 0.415 0.096 < 0.010 0.511 03/09/17 ICR-05 0.5 0.050 11.13 86.2 2.0 5.39 < 0.020 < 0.020 0.412 0.412 0.097 < 0.010 0.509 0.017 04/19/17 ICR-01 0.5 0.037 10.18 89.8 < 1.0 6.20 0.061 < 0.020 0.338 0.399 0.021 < 0.010 0.420 0.015 04/19/17 ICR-01 21.0 0.044 10.22 88.8 < 1.0 0.062 < 0.020 0.357 0.419 0.020 < 0.010 0.439 0.012 04/19/17 ICR-01 42.0 0.042 9.94 86.3 < 1.0 0.062 < 0.020 0.397 0.459 0.020 < 0.010 0.479 0.012 04/19/17 ICR-03 0.5 0.041 10.05 88.2 < 1.0 6.80 0.061 < 0.020 0.754 0.815 0.021 < 0.010 0.836 0.012 04/19/17 ICR-03 27.0 0.044 9.72 83.7 < 1.0 0.059- < 0.020 0.378 0.437 0.020 < 0.010 0.457 0.012 04/19/17 ICR-05 0.5 0.039 9.94 86.6 < 1.0 6.50 0.062 < 0.020 0.422 0.484 0.022 < 0.010 0.506 0.011 05/17/17 ICR-01 0.5 0.034 8.76 84.1 8.0 8.80 0.028 < 0.020 0.347 0.375 < 0.010 < 0.010 0.375 < 0.010 05/17/17 ICR-01 24.1 0.042 8.48 80.6 2.0 0.029 < 0.020 0.371 .0.400 < 0.010 < 0.010 0.400 < 0.010 05/17/17 ICR-01 45.0 0.039 8.10 76.4 5.0 0.029 < 0:020 0.364 0.393 < 0.010 < 0.010 0.393 < OA10 05/17/17 ICR-03 0.5 0.033 8.84 84.9 4.0 7.40 0.026 < 0.020 0.361 0.387 < 0.010 < 0.010 0.387 < 0.010 05/17/17 ICR-03 24.4 0.039 8.32 78.7 3.0 0.029 < 0.020 0.387 0.416 < 0.010 < 0.010 0.416 < 0.010 05/17/17 ICR-05 0.5 0.034 8.68 83.6 2.0 7.60 0.026 < 0.020 0.369 0.395 < 0.010 < 0.010 0.395 < 0.010 06/21/17 ICR-01 0.5 0.044 8.38 94.9 22.0 7.75 < 0.020 < 0.020 0.392 0.392 < 0.010 < 0.010 0.392 < 0.010 06/21/17 ICR-01 6.0 0.050 8.56 94.9 21.0 < 0.020 < 0.020 0.422 0.422 < 0.010 < 0.010 0.422 < 0.010 06/21/17 ICR-01 45.0 0.034 4.16 40.2 5.0 < 0.020 < 0.020 0.321 0.321 0.012 < 0.010 0.333 0.014 06/21/17 ICR-03 0.5 0.033 8.38 95.4 18.0 8.25 < 0.020 < 0.020 0.427 0.427 < 0.010 < 0.010 0.427 < 0.010 06/21/17 ICR-03 30.0 0.036 4.53 43.9 5.0 < 0.020 < 0.020 0.338 0.338 < 0.010 < 0.010 0.338 < 0.010 06/21/17 ICR-05 0.5 0.050 8.67 98.1 15.0 7.25 < 0.020 < 0.020 0.401 0.401 < 0.010 < 0.010 0.401 < 0.010 07/25/17 ICR-01 0.5 0.036 7.60 87.2 83.0 6.85 0.039 < 0:020 0.830 0.869 < 0.010 < 0.010 0.869 < 0.010 07/25/17 ICR-01 21.0 0.069 1:88 19.3 26.0 0.208 < 0.020 0.511 0.719 < 0.010 < 0.010 0.719 0.030 07/25/17 ICR-01 42.0 0.110 0.30 3.0 8.0 0.262 < 0.020 0.538 0.800 < 0.010 < 0.010 0.800 0.035 07/25/17 ICR-03 0.5 0.033 7.69 89.2 70.0 6.90 0.043 < 0.020 1.087 1.130 < 0.010 < 0.010 1.130 < 0.010 07/25/17 ICR-03 21.0 0.091 1.02 10.4 35.0 0.249 < 0.020 0.461 0.710 < 0.010 <'0.010 0.710 0.035 07/25/17 ICR-05 0.5 0.029 7.45 86.1 25.0 8.90 0.050 < 0.020 0.630 0.680 < 0.010 < 0.010 0.680 < 0.010 08/23/17 ICR-01 0.5 0.029 7.17 78.2 14.0 7.38 0.162 < 0.020 0.588 0.750 < 0.010 < 0.010 0.750 < 0.010 08/23/17 ICR-01 30.0 0.055 0.30 3.1 13.0 0.342 < 0.020 0.474 0.816 < 0.010 < 0.010 0.816 0.022 08/23/17 ICR-01 42.2 0.318 0.05 0.5 4.0 0.873 < 0.020 0.547 1.420 < 0.010 < 0.010 1.420 0.018 08/23/17 ICR-03 0.5 0.029 7.10 77.7 26.0 6.27 0.164 < 0.020 .0.593 0.757 < 0.010 < 0.010 0.757 < 0.010 08/23/17 ICR-03 30.0 0.045 4.65 49.5 15.0 0.222 < 0:020 0.569 0.791 < 0.010 < 0.010 0.791 < 0.010 08/23/17 ICR-05 0.5 0.033 6.90 75.6 18.0 5.60 0.181 < 0.020 0.537 0.718 < 0.010 < 0.010 0.718 < 0.010 09/22/17 ICR-01 0.5 0.042 8.68 85.7 25.0 3.50 0.028 < 0.020 0.742 0.770 < 0.010 < 0.010 0.770 < 0.010 09/22/17 ICR-01 21.0 0.047 8.42 83.0 35.0 0.037 < 0.020 0.764 0.801 < 0.010 < 0.010 0.801 < 0.010 09/22/17 ICR-01 39.0 0.057 7.73 75.9 33.0 0.032 < 0.020 0.849 0.881 < 0.010 < 0.010 0.881 < 0.010 09/22/17 ICR-03 0.5 0.044 8.87 87.9 35.0 3.45 0.032 < 0.020 0.769 0.801 < 0.010 < 0.010 0.801 < 0.010 09/22/17 ICR-03 27.0 0.057 7.57 73.8 20.0 0.035 < 0.020 0.795 0.830 < 0.010 < 0.010 0.830 < 0.010 09/22/17 ICR-05 0.5 0.043 8.76 86.3 20.0 3.45 0.032 < 0.020 0.626 0.658 < 0.010 < 0.010 0.658 < 0.010 10/12/17 ICR-01 0.5 0.033 8.55 78.2 18.0 3.42 0.029 < 0.020 0.550 0.579 < 0.010 < 0.010 0.579 < 0.010 10/12/17 ICR-01 21.0 0.034 8.49 77.6 14.0 0.034 < 0.020 0.561 0.595 < 0.010 < 0.010 0.595 < 0.010 10/12/17 ICR-01 39.0 0.037 8.40 76.7 18.0 0.036 < 0:020 0.558 0.594 < 0.010 < 0.010 0.594 < 0.010 10/12/17 ICR-03 0.5 0.039 8.74 80.3 15.0 3.94 0.034 < 0.020 0.533 0.567 < 0.010 < 0.010 0.567 < 0.010 10/12/17 ICR-03 24.0 0.045 8.06 72.7 20.0 0.035 < 0.020 0.524 0.559 < 0.010 < 0.010 0.559 < 0.010 10/12/17 ICR-05 0.5 0.036 8.44 77.3 14.0 3.77 0.033 < 0.020 0.544 0.577 < 0.010 < 0.010 0.577 < 0.010 11/07/17 ICR-01 0.5 0.036 9.72 83.3 22.0 3.65 < 0.020 < 0.020 0.582 0.582 < 0.010 < 0.010 0.582 0.010 11/07/17 ICR-01 21.0 0.036 9.22 78.1 21.0 < 0.020 < 0.020 0.587 0.587 < 0.010 < 0.010 0.587 < 0.010 11/07/17 ICR-01 42.0 0.061 8.74 73.6 30.0 < 0.020 < 0.020 0.710 0.710 < 0.010 < 0.010 0.710 < 0.010 11/07/17 ICR-03 0.5 0.031 9.49 81.3 25.0 3.70 0.061 < 0.020 0.479 0.540 < 0.010 < 0.010 0.540 < 0.010 11/07/17 ICR-03 27.0 0.036 9.04 75.7 25.0 0.021 < 0.020 0.574 0.595 < 0.010 < 0.010 0.595 < 0.010 11/07/17 ICR-05 0.5 0.034 9.24 78.4 20.0 3.25 < 0.020 < 0.020 0.546 0.546 < 0.010 < 0.010 0.546 < 0.010 12/06/17 ICR-01 0.5 0.028 11.10 86.0 13.0 2.61 < 0.020 < 0:020 0.441 0.441 < 0.010 < 0.010 0.441 < 0.010 12/06/17 ICR-01 24.0 0.034 10.95 84.6 18.0 < 0.020 < 0.020 0.470 0.470 < 0.010 < 0.010 0.470 < 0.010 12/06/17 ICR-01 42.0 0.031 10.95 84.2 19.0 < 0.020 < 0.020 0.462 0.462 < 0.010 < 0.010 0.462 < 0.010 12/06/17 ICR-03 0.5 0.028 11.07 86.0 14.0 2.75 < 0.020 < 0.020 0.447 0.447 < 0.010 < 0.010 0.447 < 0.010 12/06/17 ICR-03 27.0 0.029 11.04 84.8 15.0 < 0.020 < 0.020 0.457 0.457 < 0.010 < 0.010 0.457 < 0.010 12/06/17 ICR-05 0.5 0.026 11.33 87.3 13.0 2.78 < 0.020 < 0.020 0.474 0.474 < 0.010 < 0.010 0.474 < 0.010 Maximum 45.0 0.318 11.33 98.1 83.0 8.90 0.873 0.020 1.087 1.420 0.097 < 0.010 1.420 0.035 Minimum 0.5 0.026 0.05 0.5 < 1.0 2.61 < 0.020 < 0.020 0.321 0.321 < 0.010 < 0.010 0.333 < 0.010 Average 15.3 0.047 8.25 75.1 16.1 5.54 0.071 0.020 0.517 0.581 0.020 < 0.010 0.593 0.012 #Samples 60 60 60 60 60 30 60 60 60 60 60 60 60 59 i SOUTH TAHOE PUBLIC UTILITY DISTRICT INDIAN CREEK RESERVOIR DATA SUMMARY 2017 Lake Depth Temp Alk MBAS COD BOD CL- TDS S.S. Turb EC Ca Na Mg SAR Level %Ice Date Site Ft C pH mg/I mg/I mg/I mg/l mg/I mg/I mg/I NTU uS/cm mg/I mg/I mq/I ft. Cover Algae Weeds 01/17/17. ICR-01 Frozer 100 02/01/17 ICR-01 I nacce 03/09/17 ICR-01 0.5 4.2 7.40 30.1 1.02 64 1.81 6.50 66 0 No No 03/09/17 ICR-01 24.0 3.9 7.44 30.3 1.02 64 2.10 6.40 66 03/09/17 ICR-01 45.0 4.0 7.36 30.3 1.09 66 2.70 6.50 66 03/09/17 ICR-03 0.5 4.1 7.61 29.5 1.01 71 1.67 6.40 66 03/09/17 ICR-03 .30.0 3.9 7.42 30.5 1.10 64 3.31 6.90 66 03/09/17 ICR-05 0.5 4.6 7.61 30.4 1.10 62 1.82 6.50 66 04/19/17 ICR-01 0.5 9.8 7.30 1.06 5.00 67 0 No No 04/19/17 ICR-01 21.0 9.2 7.28 1.04 5.10 67 04/19/17 ICR-01 42.0 9.1 7.32 1.05 5.00 67 04/19/17 ICR-03 0.5 9.6 7.32 1.04 5.20 67 04/19/17 ICR-03 27.0 8.8 7.23 1.08 5.40 67 04/19/17 ICR-05 0.5 9.3 7.47 1.05 5.20 67 05/17/17 ICR-01 0.5 13.5 7.39 33.2 1.19 62 1.10 3.90 70 0 No No 05/17/17 ICR-01 24.1 13.1 7.36 33.4 1.18 60 1.52 4.00 70 05/17/17 ICR-01 45.0 12.8 7.24 33.2 1.16 62 2.66 4.40 70 05/17/17 ICR-03 0.5 13.5 7.44 33.2 1.18 59 0.46 3.70 70 05/17/17 ICR-03 24.4 12.8 7.26 33.6 1.17 63 1.34 4.00 70 05/17/17 ICR-05 0.5 13.6 7.33 33.0 1.16 60 0.93 3.80 70 06/21/17 ICR-01 0.5 _ 21.4 7.59 1.11 3.10 76 0 Yes No 06/21/17 ICR-01 6.0 20.4 8.22 1.11 3.20 75 06/21/17 ICR-01 45.0 13.8 7.43 1.10 3.50 74 06/21/17 ICR-03 0.5 21.8 8.43 1.11 3.80 76 06/21/17 ICR-03 30.0 13.9 7.61 1.10 3.50 74 66/21/17 ICR-05 0.5 21.4 8.63 1.10 3.40 76 07/25/17 ICR-01 0.5 22.2 8.28 1.16 25.00 80 0 Yes No 07/25/17 ICR-01 21.0 16.6 7.19 1.20 23.00 81 07/25/17 ICR-01 42.0 15.5 6.75 1.20 3.60 82 07/25/17 ICR-03 0.5 22.8 8.24 1.16 5.60 80 07/25/17 ICR-03 21.0 16.3 7.70 1.19 2.80 82 07/25/17 ICR-05 0.5 22.5 8.18 1.16 3.40 80 08/23/17 ICR-01 0.5 19.6 7.26 39.7 1.18 70 7.46 7.40 83 0 Yes No 08/23/17 ICR-01 30.0 18.1 7.08 41.5 1.18 72 3.86 3.00 88 08/23/17 ICR-01 42.2 16.0 6.52 40.3 1.16 53 4.28 3.50 112 08/23/17 ICR-03 0.5 19.8 7.20 39.5 1.15 69 4.26 3.70 83 08/23/17 ICR-03 30.0 18.4 7.13 40.3 1.16 70 9.82 6.90 83 08/23/17 ICR-05 0.5 19.8 7.26 39.7 1.15 68 4.70 3.40 83 09/22/17 ICR-01 .0.5 14.8 8.19 39.6 1.22 9.90 83 0 Yes Yes 09/22/17 ICR-01 21.0 14.7 7.98 40.1 1.21 10.00 82 09/22/17 ICR-01 39.0 14.5 7.85 40.3 1.22 14.00 83 09/22/17 ICR-03 0.5 15.0 8.04 40.1 1.22 10.00 83 09/22/17 ICR-03 27.0 14.2 7.82 40.1 1.23 14.00 83 09/22/17 ICR-05 0.5 14.7 8.12 39.9 1.21 10.00 83 10/12/17 ICR-01 0.5 11.4 7.64 1.24 6.60 84 0 Yes Yes 10/12/17 ICR-01 21.0 11.3 7.52 1.24 7.00 84 10/12/17 ICR-01 39.0 11.3 7.49 1.24 7.30 84 10/12/17 ICR-03 0.5 11.5 7.12 1.24 5.70 84 10/12/17 ICR-03 24.0 10.8 7.59 1.24 9.60 84 10/12/17 ICR-05 0.5 11.4 7.67 1.24 7.00 84 11/07/17 ICR-01 0.5 8.6 7.98 40.3 1.18 72 7.78 6.10 84 0 Yes No 11/07/17 ICR-01 21.0 8.1 7.50 40.5 1.16 67 10.10 6.40 84 11/07/17 ICR-01 42.0 7.9 7.32 40.9 1.14 68 18.70 16.00 84 11/07/17 ICR-03 0.5 8.6 7.92 40.7 1.15 67 8.21 6.40 84 11/07/17 ICR-03 27.0 7.6 7.57 40.3 1.18 69 14.20 9.80 84 11/07/17 ICR-05 0.5 8.2 7.68 40.6 1.15 70 9.51 6.60 84 12/06/17 ICR-01 0.5 4.6 7.65 1.24 6.80 83 0 Yes No 12/06/17 ICR-01 24.0 4.5 7.53 1.24 7.20 83 12/06/17 ICR-01 42.0 4.3 7.50 1.23 7.30 83 12/06/17 ICR-03 0.5 4.7 7.81 1.24 7.40 83 12/06/17 ICR-03 27.0 4.2 7.41 1.20 7.30 .83 12/06/17 ICR-05 0.5 4.4 7.96 1.24 7.80 83 Maximum 45.0 22.8 8.63 41.5 0.0 0.00 1.24 72 18.70 25.00 112 0.00 0.00 0.00 0.00 0.00 100 Minimum 0.5 3.9 6.52 29.5 0.0 0.00 1.01 53 0.46 2.80 66 0.00 0.00 0.00 0.00 0.00 0 Average 16.3 12.2 7.58 36.8 1.16 66 5.18 6.87 78 9 #Samples 60 60 60 30 0 0 60 24 24 60 60 0 0 0 0 0. 11 10 10 SOUTH TAHOE PUBLIC UTILITY DISTRICT INDIAN CREEK RESERVOIR DATA SUMMARY 2017 Coliforms Fecal Air Depth Total FecaUE.coli Strep Temp SO4 Boron Fe Mn Date Site Ft MPN MPN MPN C mg/L mg/L ug/L ug/L Comments 01/17/17 ICR-01 Frozer 02/01/17 ICR-01 Inacce 03/09/17 ICR-01 0.5 1 < 1 6.5 1.29 03/09/17 ICR-01 24.0 1.27 03/09/17 ICR-01 45.0 1.27 03/09/17 ICR-03 0.5 4 < 1 1.28 03/09/17 ICR-03 30.0 1.27 03/09/17 ICR-05 0.5 4 < 1 1.28 04/19/17 ICR-01 0.5 1 6 13.7 1.64 04/19/17 ICR-01 21.0 1.63 04/19/17 ICR-01 42.0 1.66 04/19/17 ICR-03 0.5 < 1 5 1.85 04/19/17 ICR-03 27.0 1.36 04/19/17 ICR-05 0.5 < 1 14 1.36 05/17/17 ICR-01 0.5 10 < 1 7.7 1.53 05/17/17 ICR-01 24.1 1.56 05/17/17 ICR-01 45.0 1.52 05/17/17 'ICR-03 0.5 1 < 1 1.52 05/17/17 ICR-03 24.4 1.45 05/l7/17 ICR-05 0.5 15 < 1 1.48 06/21/17 ICR-01 0.5 517 6 30.0 1.36 449 < 20 06/21/17 ICR-01 6.0 1.49 461 < 20 06/21/17 ICR-01 45.0 2.10 519 31 06/21/17 ICR-03 0.5 285 1 1.69 459 < 20 06/21/17 ICR-03 30.0 1.83 503 24 06/21/17 ICR-05 0.5 461 1 1.76 475 < 20 07/25/17 ICR-01 0.5 103 < 1 25.4 1.37 07/25/17 ICR-01 21.0 1.41 07/25/17 ICR-01 42.0 1.35 07/25/17 ICR-03 0.5 35 < 1 1.38 07/25/17 ICR-03 21.0 0.98 07/25/17 ICR-05 0.5 110 1 1.46 08/23/17 ICR-01 0.5 105 < 1 24.3 1.37 08/23/17 ICR-01 30.0 1.38 08/23/17 ICR-01 42.2 1.24 08/23/17 ICR-03 0.5 101 < 1 1.42 08/23/17 ICR-03 30.0 1.45 08/23/.17 ICR-05 0.5 194 < 1 1.34 09/22/17 ICR-01 0.5 124 1 8.1 1.26 09/22/17 ICR-01 21.0 1.32 09/22/17 ICR-01 39.0 1.62 09/22/17 ICR-03 0.5 69 1 1.48 09/22/17 ICR-03 27.0 1.50 09/22/17 ICR-05 0.5 102 < 1 1.26 10/12/17 ICR-01 0.5 31 3 15.6 1.21 10/12/17 ICR-01 21.0 1.15 10/12/17 ICR-01 39.0 1.16 10/12/17 ICR-03 0.5 37 < 1 1.15 10/12/17 ICR-03 24.0 1.17 10/12/17 ICR-05 0.5 33 < 1 1.16 11/07/17 ICR-01 0.5 10 < 1 2.7 1.76 11/07/17 ICR-01 21.0 1.69 11/07/17 ICR-01 42.0 1.75 11/07/17 ICR-03 0.5 13 1 1.70 11/07/17 ICR-03 27.0 1.89 11/07/17 ICR-05 0.5 14 < 1 1.71 12/06/17 ICR-01 0.5 23 < 1 8.0 1.49 12/06/17 ICR-01 24.0 2.07 12/06/17 ICR-01 42.0 2.01 12/06/17 ICR-03 0.5 2.07 12/06/17 ICR-03 27.0 1.89 12/06/17 ICR-05 0.5 32 < 1 2.05 Maximum 45.0 > 517 14 0 30.0 2.10 519 31 Minimum 0.5 < 1 < 1 0 2.7 0.98 449 20 Average 15.3 84 2 14.2 1.50 478 23 #Samples 60 29 29 0 10 60 0 6 6 SOUTH TAHOE PUBLIC UTILITY DISTRICT INDIAN CREEK RESERVOIR DATA SUMMARY From: 1980 To: 2017 Secchi NH3+ Total P D.O. D.O. Chlorophyll Depth NH4 NH3-N Org-N TKN NO3-N NO2-N Total N PO4-P Year mg/I mg/I %SAT mg/m3 ft. mg/L mg/I mg/I mg/I mg/I mg/I mg/L mg/I 80 0.305. 8.75 88.8 1.227 0.080 1.351 2.578 3.465 0.201 6.244 0.212 81 0.267 10.26 122.8 0.404 0.148 1.335 1.692 7.454 0.315 9A05 0.176 82 0.531 9.77 113.5 0.925 0.105 1.521 2.417 4.329 0.190 6.916 0.421 83 0.575 10.22 116.6 0.474 0.139 1.223 1.697 3.419 0.125 5.241 0.472 84 0.459 10.35 115.8 -0.476 0.120 1.350 1.799 3.356 0.154 5.309 0.339 85 0.219 9.93 112.6 0.629 0.142 1.585 2.212 2.722 0.118 5.052 0.092 86 0.164 9.54 111.0 1.277 0.273 1.577 2.854 3.080 0.147 6.082 0.059 87 0.145 9.00 101.7 2.927 0.331 1.755 4.683 3.590 0.174 8.447 0.058 88 0.095 9.13 105.3 4.661 0.097 2.194 6.855 6.406 0.161 13.421 0.023 89 0.075 9.26 107.5 2.970 0.160 1.053 4.023 4.892 0.108 9.023 0.020 90 0.154 9.02 104.9 0.140 0.052 1.178 1.318 0.705 0.028 2.051 0.078 91 0.299 8.91 102.9 0.206 0.074 1.889 2.095 0.289 0.015 2.374 0.143 92 0.318 8.90 105.4 0.082 0.040 2.828 2.910 0.038 0.011 2.959 0.136 93 0.778 8.72 102.6 0.171 0.029 8.453 8.624 0.150 0.013 8.054 0.115 94 0.179 8.15 91.0 0.138 0.038 1.573 1.711 0.039 0.014 1.764 0.080 95 0.344 8.57 102.1 0.203 0.050 5.542 5.744 0.068 0.012 5.823 0.061 96 0.600 9.00 106.3 0.100 0.030 6.110 6.220 0.040, 0.010 6.260 0.020_ 97 0.062 9.05 102.4 0.185 0.015 0.883 1.068 0.083 0.029 1.181 0.018 98 0.049 8.61 102.1 0.088 0.013 0.655 0.743 0.089 0.010 0.840 0.011 99 0.076 8.50 94.8 3.98 0.072 0.010 0.913 0.985 0.023 < 0.010 1.018 0.012 00 0.078 6.70 71.8 24.0 2.67 0.154 0.011 0.927 1.080 0.070 < 0.010 1.161 0.013 01 0.053 6.12 72.6 11.4 5.62 0.054 0.011 0.860 0.913 0.010 < 0.010 0.933 0.015 02 0.048 6.76 74.2 133 7.47 0.078 0.016 0.825 0.903 0.038 < 0.010 0.951 0.015 03 0.044 7.87 86.6 14.2 8.21 0.119 0.024 0.759 0.881 0.033 < 0.010 0.922 0.013 04 0.042 6.43 74.5 15.6 10.25 0.105 0.013 0.845 0.941 0.030 < 0.010 0.982 0.015 05 0.043 7.25 80.4 9.7 6.50 0.094 0.011 0.870 0.964 0.043 < 0.010 0.988 0.013 06 0.069 6.54 69.4 13.9 5.15 0.160 < 0.010 0.621 0.781 0.045 < 0.010 0.836 0.015 07 0.057 6.66 76.1 14.8 4.72 0.106 0.013 0.899 1.005 0.031 < 0.010 1.047 0.013 , 08 0.071 6.66 80.2 21.0 3.77 0.076 0.011 1.149 1.225 0.048 < 0.010 1.282 0.018 09 0.067 8.28 98.9 16.2 4.48 0.046 0.013 1.249 1.295 0.021 < 0.010 1.326 0.013 10 0.042 7.80 91.8 11.1 7.69 0.029 0.011 0.801 0.829 0.019 < 0.010 0.858 0.011 11 0.041 6.97 80.6 9.2 8.19 0.055 0.010 0.512 0.568 0.013 < 0.010 0.591 0.012 12 0.037 7.87 90.5 4.8 10.95 0.086 0.015 0.667 0.754 0.034 < 0.010 0.798 0.012 13 0.035 8.45 98.4 7.4 10.64 0.049 0.020 0.727 0.776 0.027 < 0.011 0.797 0.012 14 0.037 9.07 91.2 9.9 7.25 0.041 0.021 0.751 0.782 0.012 < 0.010 0.786 0.012 15 0.045 9.74 93.8 19.9 7.85 0.031 0.022 0.992 1.023 0.013 < 0.010 1.028 0.010 16 0.034 9.37 88.1 10.3 9.87 0.039 < 0.020 0.660 0.691 0.027 < 0.010 0.714 0.011 17 0.047 8.25 75.1 16.1 5.54 0.071 < 0.020 0.517 0.581 0.020 < 0.010 0.593 0.012 Maximum 0.778 10.35 122.8 24.0 10.95 4.661 0.331 8.453 8.624 7.454 0.315 13.421 0.472 Minimum 0.034 6.12 69.4 4.8 2.67 0.029 < 0.010 0.512 0.568 0.010 < 0.010 0.591 0.010 Average 0.173 8.43 94.9 13.5 6.88 0.493 0.058 1.568 2.058 1.178 0.053 3.265 0.073 #Years 38 38 38 18 19 38 38 38 38 38 38 38 38 Note:Chromogenic Substrate test for Total Coliform and E.coli begun in November 2014 SOUTH TAHOE PUBLIC UTILITY DISTRICT INDIAN CREEK RESERVOIR DATA SUMMARY From: 1980 To: 2017 Lake Temp Alk MBAS COD -BOD C1- TDS S.S. Turb EC Ca Na Mg SAR Level %Ice Algae Weeds Year C pH mg/I mg/I mg/I mg/I mg/I mg/I mg/I NTU uS/cm mg/I mg/I mg/I ft. Cover 80 12.9 8.47 75 0.05 24.8 2.80 132.2 459 8.16 2.20 605 64.53 72.33 2.37 2.38 49.81 4 81 14.4 9.3 78 0.04 24.1 2.23 103.1 457 5.74 2.22 653 72.00 48.50 1.94 1.53 49.20 0 82 12.6 8.74 91 0.04 25.7 2.73 82.4 363 8.84 3.74 579 59.34 42.95 2.46 1.47 52.36 7 83. 12.3 9.15 101 0.03 22.8 2.28 81.2 344 4.69 3.56 553 55.39 43.94 2.57 1.56 51.86 1 84 12.4 9.12 115 0.03 24.1 3.03 92.2 381 8.35 3.67 627 61.83 61.36 2.52 2.07 51.42 2 85 13.5 9.04. 75 0.05 31.1 4.63 107 405 15.64 6.62 682 43.43 83.58 2.73 3.44 49.38 8 86 14.2 8.88 55 0.05 28.9 3.71 72.9 315 19.44 10.73 517 23.43 73.96 2.75 3.83 48.87 0 87 12.9 8.4 74 0.03 28.8 4.69 114 450- 14.34 4.44 766 29.75 110.92 3.14 5.21 46.10 8 88 13.6 7.74. 60 0.03 14.7 -5.12 138 509 19.00 -3.01 891 24.50 134.17 3.26 6.74 45.99 4 89 12.9 8.84 47 0.02 21.8 2.05 113 457 7.10 3.68 786 24.26 111.58 2.88 5.69 41.43 13 90 13.8 9.55 67 0.02 27.8 2.42 82.5 426 -8.33 4.38 687 35.08 92.33 3.03 4.02 27.00 14 91 13.1 9.23 69 0.02 42.2 8.27 27.6 205 20.36 17.38 297 22.45 32.00 2.61 1.68 17 92 13.8 9.55 74 0.03 46.3 3.50 .18.6 166 13.75 5.48 257 21.58 24.50 2.43 1.34 15 93 13.1 8.73 55 0.03 129.3 21.00 5.93 109 81.91 24.43 135 12.98 9.69 2.17 0.66 13 94 11.4 9.42 67 0.02 38.7 5.12 8.10 130 7.16 5.35 168 18.29 13.07 2.46 0.76 15 95 13.2 8.66 54 0.02 31.4 6.59 3.86 98 28.68 8.02 124 12.83 8.28 2.27 0.55 44.48 8 96 :13.3 9.12 47 0.02 99.4 17.48 1.70 70 71.90, 19.45 108 11.29 6.46 2.23 0.46 50.05 0 97 12.5 8.77 40 0.02 19.1 2.97 1.47 64 12.86 6.08 91 9.70 5.51 1.91 0.42 47.44 2 98 12.3 8.32 43 0.02 16.1 2.43 1.50 66 8.47 4.34 99 9.97 5.88 1.77 0.45 45.65 11 99 13.1 8.17 43 0.02 20.3 2.83 1.33 82 14.63 11.13 97 10.29 5.92 1.97 0.44 45.50 00 10.3 8.24 48 19.3 2.09 1.32 96 11.58 15.15 105 10.70 5.92 1.96 0.44 01 13.2 8.25 50 24.2 1.68 1.41 79 9.16 12.47 109 02 11.0 8.46 48 21 1.50 1.42 77 4.19 5.79 105 03 10.0 8.29 48 19.7 1.74 1.82 71 3.06 4.33 106 04 14:0 8.45 48 17.9 1.78 2.05 68 4.50 3.81 104 10.10 7.46 1.91 0.56 05 11.5 8.15 48 18.2 1.73 1.89 72 3.71 3.78 102 0 06 10.0 7.65 42 24.3 1.80 1.38 72 5.64. 9.35 91 2 07 12.6 8.41 51 29.2 2.97 1.66 85 6.00 8.34, 113 11.03 "6.89 2.20 0.50 9 08 13.4 8.53 54 26.4 2.09 103 6.48 17.21 118 2 09 13.9 8.85 52 32.5 2.09 89 6.65 10.38 119 0 10 13.4 8.38 48 26.9 .1.83 75 4.59 5.97 105 0 11 13.7 7.60 40 21.2 1.02 70 3.19 2.95 81 0 12 13.2 8.37 49 0.92 73 1.92 2.47 96 0 13 12.8 8.43 50 1.12 71 2.22 1.73 99 12 14 12.2 8.61 49 1.17 66 3.35 2.81 102 0 15 14.3 9.13 52 1.35 75 3.04 3.73 111 9 16 13.2 8.26 48 1.62 73 2.31 2.26 99 7 17 12.2 7.58 37 1.16 66 5.18 6.87 78 9 Maximum 14.4 9.55 '115 0.05 129.3 21.00 137.9 509 81.91 24.43 891 72.00 134.17 3.26 6.74 52.36 17 Minimum 10.0 7.58 37 0.02 14.7 1.50 0.9 64 1.92 1.73 78 9.70 5.51 1.77 0.42 27.00 0 Average 12.8 8.60 58 0.03 31.2 4.33 32.0 183 12.27 7.09 278 28.47 43.79 2.41 2.01 .46.66 6 #Years 38 38 38 20 32 28 38 38 38 38 38 23 23 23 23 16 32 0 0 Note:Chro SOUTH TAHOE PUBLIC UTILITY DISTRICT INDIAN CREEK RESERVOIR DATA SUMMARY From 1980 To: 2017 Coliforms Fecal Air Total Fecal E.coii Strep Temp SO4 Boron Fe Mn Year MPN MPN MPN C mg/L mg/L ug/L ug/L Comments 80 12.4 81 18.1 82 15.4 83 97 10 40 14.5 84 238 4 186 16.0 85 231 4 203 17.1 86 173 5 419 18.7 87 72 6 38 17.2 88 330 5 166 17.2 89 219 6 208 15.7 90 166 5 64 18.0 91 77 2 28 17.8 34.33 0.13 92 265 4 91 17.2 18.08 0.11 93 519 7 259 14.9 8.32 0.06 94 477 13 54 11.5 7.48 0.06 95 584 4 26 12.4 5.39 0.03 96 186 _.2 189 16.7 2.59 0.04 97 75 7 119 15.1 3.43 0.02 98 154 3 149 8.2 2.75 0.02 99 50 6 30 15.5 4.74 0.02 00 7 < 2 3 19.2 5.50 0.03 1,180 46 01 200 < 2 2 16.5 4.75 0.02 547 67 02 29 < 3 27 24.3 4.90 0.02 318 31 03 9 < 4 3 13.6 3.21 0.02 218 82 04 7 2 4 18.0 2.54 0.03 222 28 05 16 2 24 16.2 1.99 0.02 307 36 06 49 3 5 13.9 1.58 0.02 773 82 07 .6 2 2 20.1 3.42 0.02 614 35 08 15 2 3 17.5 4.68 0.02 1,237 50 09 230 2 2 14.8 4.66 0.02 794 24 10 403 4 2 1.3.6 3.72 0.01 264 21 11 376 5 5 13.1 1.30 0.01 387 32 12 24 2 3 16.2 1.21 0.01 169 22 13 32 2 7 15.4 1.83 178 20 14 146 4 2 15.2 2.50 15 354 3 17.8 2.70 16 341 1 16.5 3.08 17 84 2 14.2 1.50 478 23 Maximum 584 13 419 24.3 34.33 0.13 1,237 82 Minimum 6 1 2 8.2 1.21 0.01 169 20 Average 178 4 74 15.9 5.27 0.03 512 40 #Years 35 35 32 38 27 22 15 15 Note:Chro INDIAN CREEK RESEREVOIR Total Phosphorus Chlorophyll a 0.20 50 0.15 40 J co 30 v� 0.10 � a� E 20 0.05 10 AL 0.00, 0 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 —A Series1 A Chlorophyll a Linear(Chlorophyll a) Secchi Depth NO3-N&NH3-N 0 10 5 9 10 8 m 7 15 3 6 20 5 0 v�25- E �= 4 30 3 L 35 2 40 1 45 0 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 80 8182 83 84 85 86 87 88 89 90 9192 93 94 95 96 97 98 99 00 0102 03 04 05 06 07 08 09 10 1112 13 14 15 16 17 —A Secchi Depth Linear(Secchi Depth) —A NO3-N --0—NH3-N INDIAN CREEK RESEREVOIR Chlorides Total Dissolved Solids 150 700 140 650 130 600 120 550 110 500 100 450 go 80 400 E 70 a� 350 AL 60 300 50 250 40 200 30 150 20 100 10 50 0 8081828384858687888990919293949596979899000102030405060708091011121314151617 0 8081828384858687888990919293949596979899000102030405060708091011121314151617 —A Chlorides Linear(Chlorides) A TDS Linear(TDS) pH 12 11 10 9 8 6 5 4 80 8182 83 84 85 86 87 88 89 90 9192 93 94 95 96 97 98 99 00 0102 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 --A pH ALPINE COUNTY MONITORING ALPINE COUNTY MONITORING This monitoring program was developed with the assistance of the U.S.. Department of, Agriculture's Soil Conservation Service and the California State Water Quality Control Board, Lahontan Region. In each category of sample (soil, groundwater, and surfacewater), the sites are reported with tables showing the monthly results for 2017 and the yearly averages since monitoring was initiated. Trends are plotted for parameters indicative of wastewater. Groundwater, surfacewater.and soil quality data for 2017 are summarized below. Fourteen new monitoring'wells were drilled in Alpine County in 2011.These 14 new wells were first monitored monthly in 2012. Wells ACMW-20 thru ACMW-26 are required to be monitored in our reclamation permit. Several of these wells replaced domestic welis' (GW-XX) and monitoring wells. In 2015 the regional Board reduced sampling frequency for all monitoring wells from monthly to quarterly. The Regional- Board also replaced Total Coliform monitoring by the multiple tube fermentation method with E.,coli monitoring using the Idexx Colilert QuantiTray method (chro' mogenic substrate). The water quality results obtained .from monitoring wells ACMW-13 thru ACMW-19 will provide data needed to evaluate potential changes in water quality from the use of new irrigation fields designed for the application and temporary storage of reclaimed wastewater in Diamond Valley. The 2005 Arsenic results for the GW sites (domestic wells or potable water wells) should be viewed with caution; these results may be invalid. Domestic wells that previously showed no Arsenic had detectable Arsenic during 2005. The domestic wells that had previously showed detectable Arsenic all had significant increases in the concentration of Arsenic. This did not happen in the monitoring wells. All monitoring wells had either no detectable Arsenic or had the same concentration of Arsenic as in previous years. S u rfacewate rs Nitrate-N for surface waters was performed using the Brucine method prior to March 1983. Beginning in March 1983, the cadmium reduction method was used for all Nitrate analyses on surfacewaters. For this reason, Nitrate-N data prior to 1983 should be used with caution. During 1997, a new sample type of bottle was used for dissolved nutrients, including Nitrate. These bottles were rinsed with HNO3. Due to the material of the sample bottles,the normal rinsing of the bottles was insufficient to remove all traces of Nitrate from the bottle. The spike in-- Nitrate results during 1997 can be attributed to this insufficient rinse. Beginning in 1998 the dissolved nutrient sample bottles were rinsed with HCI. Beginning in June 2000, Chloride, Nitrite-N, Nitrate-N, ortho-Phosp hate-P and Sulfate were analyzed using ion chromatography. .Starting in 2000, most surface water sites were sampled March-November, only.This may bias the annual averages to a higher value due to a higher percentage of months with irrigation occurring. Starting in 2001, monitoring was performed in irrigation ditches crossing the California / Nevada border. This was initiated.following a request by the Nevada Department of Environmental.Protection. Starting in 2002, a bower dilution was incorporated into the Total and Fecal Coliform test. This lowered the detection limit to 3 MPN/100mL. In 2015 The Regional Board replaced Total Coliform monitoring by the multiple tube fermentation method with E. coli monitoring using the Idexx Colilert Quanti-Tray method (chromogenic substrate). Soils In 2015 the.Regional Board removed S8 from the list of soil sites to monitor. Sample Sites aSite „ Latitude LongifudeY'Y ,Location. Type Sample Alpine County Monitoring Wells ACMW-01AW 38.766952 -119.781561 Below Main Dam Monitoring Well ACMW-01 BE 38.766333 -119.785321 Below Secondary Dam Monitoring Well ACMW-02N 38.772392 -119.776819 Access gate Monitoring Well ACMW-02S 38.772341 -119.776816 Access gate Monitoring Well ACMW-03W 38.815138 -119.778848 Fredericksburg D @Hwy 88 Monitoring Well ACMW-04W 38.836719 -119.779439 Gansberg Ranch Monitoring Well ACMW-06N 38.800522 -119.763225 Celio Ranch,along DV Rd Monitoring Well ACMW-06S 38.800481 -119.763195 Celio Ranch,along DV Rd Monitoring Well ACMW-07S 38.771882 -119.801658 Diamond Valley Ranch Monitoring Well ACMW-07D 38.771882 -119.801658 Diamond Valley Ranch Monitoring Well ACMW-08N 38.773618 -119.776847 Diamond Valley Ranch Monitoring Well ACMW-08S 38.773618 -119.776847 Diamond Valley Ranch Monitoring Well ACMW-09D 38.780489 -119.790314 Diamond Valley Ranch Monitoring Well ACMW-09S 38.780489 -119.790314 Diamond Valley Ranch Monitoring Well ACMW-10 38.773336 -119.794246 Diamond Valley Weather Station Monitoring Well ACMW-11 38.775595 -119.788216 Diamond Valley Ranch Monitoring Well ACMW-12 38.777644 -119.795388 Diamond Valley Ranch Monitoring Well ACMW-13 38.768977 119.797083 Diamond Valley Ranch Monitoring Well ACMW-14 38.767441 119.793215 Diamond Valley Ranch Monitoring Well ACMW-15 38.769600 119.784280 Diamond Valley Ranch Monitoring Well ACMW-16 38.773829 119.784173 Diamond Valley Ranch Monitoring Well ACMW-17 38.776273 119.790107 Diamond Valley Ranch Monitoring Well ACMW-18 38.779213 119.782997 Diamond Valley Ranch Monitoring Well ACMW-19 38.776249 119.762112 Diamond Valley Ranch Monitoring Well ACMW-20 38.808781 119.777665 Near SW-05 Monitoring Well ACMW-21 38.819915 119.777072 Emigrant Trail near Chambers Lane Monitoring Well ACMW-22 38.829022 119.783738 Fredericksburg Lane near S7 Monitoring Well ACMW-23 38.825384 119.760193 On road to SW-15,upstream(S) Monitoring Well ACMW-24 38.832193 119.757427 On road,downstream (N) of SW-15 Monitoring Well ACMW-25 38.830470 119.769901 Road between Brooke's&Neddenriep @ Neddenripp's Monitoring Well ACMW-26 38.840602 119.769677 Road between Brooke's&Neddenriep @ Stateline Monitoring Well Alpine County Domestic Well GW-01 38.761146 -119.810926 Cohen House Domestic Well GW-02 38.772195 -119.801259 DV Ranch Domestic well Domestic Well GW-03 38.789132 -119.752446 Springmeyer Ranch house Domestic Well GW-04 38.800343 -119.762579 Celio Ranch house Domestic Well GW-05 38.830897 -119.773807 Neddenriep Ranch house Domestic Well GW-07 38.838895 -119.794154 Gansberg,Jr,Ranch house Domestic Well GW-08 38.815528 -119.781095 Arant Ranch house Domestic Well GW-11 38.766522 -119.808540 Diamond Valley School Domestic Well GW-14 38.757140 -119.818462 Sierra Pines Store Domestic Well GW-17 DV Ranch Domestic well Domestic Well D:\Lahontan\Sample Sites\Lahontan Report-Sample Sites.xls Page 1 of 2 Sample Sites ;Site Latitude- Longitude. L`ocation Type ample Alpine County Surfacewater Sites SW-01 38.768903 -119.838353 Carson River,W Fork,Crystal Springs Rd Surfacewater SW-02 38.756651 -119.806706 Indian Creek @ Diversion Surfacewater SW-03 38.773149 -119.772618 Indian Creek downstream of 1 st bridge Surfacewater SW-04 38.776730 -119.760423 Indian Creek upstream of 2nd bridge Surfacewater SW-05 38.809525 -119.777030 Carson River,W Fork,Paynesville Surfacewater SW-06 38.840850 -119.764100 Carson River,W Fork,Stateline Surfacewater SW-07 38.854967 -119.786541 Fredericksburg Ditch Surfacewater SW-08 38.786579 -119.799800 Irrigation Ditch along Carson River Road Surfacewater SW-09 38.867242 -119.760810 Carson River,W Fork,Dressler Lane Surfacewater SW-10 38.788719 -119.750599 Indian Creek @ Springmeyer Ranch Surfacewater Alpine County Soils Sites S-2 38.800316 -119.764305 Celio Ranch Soil S-3 38.801156 -119.780333 Bentley Ranch Soil S-4 38.842761 -119.780047 Gansberg Ranch Soil S-5 38.836900 -119.780200 Gansberg Ranch Soil S-6 38.829075 -119.780010 Neddenriep Ranch Soil S-7 38.829190 -119.785420 Bruns Ranch Soil S-8 38.817425 -119.757000 On-Farm Soil Heavenly Valley Creek HVC-1 38.917861 -119.959632 Heavenly Valley Creek;Downstream of Pioneer Surfacewater HVC-2 38.920120 -1.19.969390 Heavenly Valley Creek;250'upstream of Pond#2 Surfacewater HVC-3 38.921373 -119.971421 Heavenly Valley Creek;25'downstream of Meadow Crest Dr Surfacewater HVC-4 38.920591 -119.969271 Heavenly Valley Creek;Effluent of drain from Lower Shop area Surfacewater HVC-5 38.921278 -119.971090 Heavenly Valley Creek;Effluent of drainage pipe along Meadow Crest Dr Surfacewater Tahoe Basin Monitoring Wells Control 38.9135951 -119.9623870 North east of post office @ Black Bart and Pioneer Trail Monitoring Well MW01-50 38.9131807 -119.9640739 SE corner of Emergency Retention Basin,At access gate to ERB Monitoring Well MW01.5 38.9129062 -119.9642166 SE corner of Emergency Retention Basin,At access gate to ERB Monitoring Well MW02-50 38.9128116 -119.9652141 South side of Emergency Retention Basin,on Black Bart Ave Monitoring Well MW03-50 38.9129187 -119.9657562 South side of Emergency Retention Basin,on Black Bart Ave Monitoring Well MW03.5' 38.9140351 -119.9664341 W side of Emergency Retention Basin,off Hank Monk Ave Monitoring Well MW04-50 38.9148881 -119.9666463 W side of Emergency Retention Basin,off Hank Monk Ave Monitoring Well. MW05-50 38.9157076 -119.9663302 NW corner of Emergency Retention Basin,off Hank Monk Ave Monitoring Well MW06/50 38.9157148 -119.9648075 North side of Emergency Retention Basin Monitoring Well MW07-50 38.9157020 -119.9639551 NE corner of Emergency Retention Basin Monitoring Well MW08-25 38.9213967 -119.9709800 SW corner of Pond#1,at south access gate to STPUD Monitoring Well MW 11 38.9238680 -119.9677190 250 ft south east of North Gate(to Al Tahoe Blvd) Monitoring Well MW12 38:9226200 -119.9683700 110 ft south of Biosolids Building Monitoring Well ti MW 13 38.9206200 -119.9692200 125 ft south east of Pond#2 Monitoring Well Ditch Sites DD-01 38.765624 -119.780543 Diamond Ditch @ beginning;HPR effluent Ditch SW-12 38.809127 119.777411 Bruns Diversion Ditch SW-13 38.810082 -119.776900 Fredericksburg Ditch Ditch SW-14 38.866992 -119.794173 Fredericksburg Ditch Ditch SW-15 38.828440 -119.756263 Celio Tail water Ditch SW-16 38.866896 -119.783627 Drain Ditch @ Fairview Ln Ditch Reservoirs HPR 38.764500 -119.780450 Harvey Place Reservoir Reservoir DALahontan\Sample Sites\Lahontan Report-Sample Sites.xls Page 2 of 2 .4!!CS:J.�� .': 'l.•ty '�:1't:,t'"i,'>7 x PS :J- - ! -•1 .ly`:t:�w',}xy,x A t �\ :►yr!,, :.. ' .i 't4n1�' �,' t a ., �r I :t.`x Y .9F •'�4! .�,t_�• :'� '!,�'•t,I ,�:1.� Y,`•C:.r `A.r,v',1_�, :i '''' -♦ r! ••� •I _ •r' r•\ti t , � 4: ++.. .: T :• ...x., In11 S 4.. c={f.:: r j t' -.j..^- ,r f. ]� i - •• �y ..y,.>.._^'�, " ';:�\k:� t,-., :I � '•s'. :t.F:�;.,�,�5�t �.•�...J, W r.•.{�r•�: 9„t... �e , ... _..._...�.. .. ...-....i�.R.-..,,._-„"1:.,, •--� 'M'. _1'� k ..`.'Q.'{'.{v'�g`r.,� .:;s �' .,Cr 'fl) �,ems• .r:\ ..v'w`r?.` i.�'...1..�!" I '.i .._..••.••H� .... .^_, ,ti, .<:. •;sip' ,..\:�7.,-/.•:"y?�iteL S.t:'}. .: •:YE (..r r r t[i ,n. .1. '~' �'' _ .... ,-,' ."•_. 1 is! '�, :;sl• • t:s."E:.i X•-_ 11 ./v !7'1r:ti +s(I�,h. a. �A. _c/_.;, ♦ 1 I I.._..........:� `•fit" •' ]:' 'r).?It a. !,2#3° t.� •ir. -f -^. _i�.'r''r.�r}�'•'.,\'y:::•_ r'L-;:l,q'7,:„�;ti:i, ,'` t ` i t .,••i.. �}'r. •fir.'�Z+:.^"�t,.•i. <•� L' t.,.'"''Its.{} 4fi'.-1,=3'E'f:i,�t2 :�,':'.:•�J �,y «..�e��;' ,_� 1 ;� lit ,i�, _ •'�� .,:, y5 t l:r••,r .'Xr.t .l I.7: R `i�+�"';..,.:. ,,LL �,Y�..... ..Y_, � .. 4"i � Kf! , �_ ,j: r!:;{t:y':� •': a :♦ I at trY \ tJurl •Jt+ `:t:, J'/r} ,.' L r, 11f c � 1 f.�" i., 4 w. •:►':r.,= .'•I. `' i_....r.. '."''•�}, OC .s`s" .[, } «e� `' fSt} 1;N t•;' 4.'Firf •�:i�:..,.1 a:!; 11'%"^'•' 'r' ,,w 'i .."�.t•' _ ' ���� ,,11 f'.. `ify: �C r�Iri• ' i �.- f,�'i;• ' :a s 1�t�£:r�, .� .:`4::� YYi�}e �tt'r �. ,�,�•i'`�^ r, `,+>•..,;lir�::�r. ,>'.:'�''�:si'•.ti�.�..?!j�`�� i �`.� 1 +. •,!:' .:i4 :�• 2f�•1� ,.li �.;���([{ZA.S y=1i t`.. a� '�l'f�'4'�1•�.:"''Q}'" ,M,.• � at\ I ' i � E y �� .^t:.-,1 -4• f. v �� `t's I:i ,ll�{L:s�i.��• �. �i,.F �i•1. �, ii.ti Fi a-1,:!_� •-''^h': •rr�t! " +J� �' � ,�,• �i I•a `V f .p,Marie ,. '":� " iS} _ �' ilct �r .�t�;• t.1 ,,.,., -:• `5�..._> .....y.,t:.�6s I� •�,rtY - �'..:� "'A ��}' ,q -t. a,' }!:''•.1; -•y -�,r i, �':�` '•s`i,�i;if:- ,•J.r•�::.:.'�:..,.�iti� .-,' i _ t� t ..y,.»•�•�•i T r!r :K ?•�. ,ram-"'!t"` '}! ^�11. ' t .'�;{-Y'. ,.yyam. 1•,:,,'s'�'::'�:. .x ' Me!= ._;,r..........r- ',�`•' /: / :<: A >. a. - +�' ' .}• 11 4 's:='•• 1="h •,7,t,,y. ''k,rJ.?.;i,. \:- `.".`__„_,_,,,.-....... 1_ , +!i ,..7 �(' ,{, .n'i!.�,..tc�.,t�f �� `tl`t�Gi -'•7}-. ••rS..a.r:• .k+r.a •r•t':•�•'i.}. ''�:7.�•'}•1•M^•..: �-"a}'.'^'-.'.•M, /` + S � 1 1 i ! •• e 'ij,,t}..,a�t.J .f J I^,T .r .r'E• t�l. _ •� t,^1: 'Y.!;f '!! Y,iA..rjtr, a^ _'.5�e.�-+:'i `;�.-. Sy'.':tf 'V v !Y C:':Tii :1 q :,, qr..' .;',•.,.�•'••:4••.r}:;:- s �}s�;rrij'r. _ T t ry µ,� tt i, <g,[,Fy �jl�.e;.•ate :.�'.'-�;-.�,�....,r,,.,;,•,ir�`;'r::t`:f' � i i �FF a /'�, _.'tr.i•]� •aF/�1 :15��{� � „r,1� ';;i tt. ',��,�^_.,�`,51 1,}Y.�., \' i:7�;'..- .:j��-;':41r.:,t?• ':i: i , f i t !:'0�. I } r,.Ti. .'! •f r 2r. 'TES�a .ii r ig 1 t• }!'s a�� •.�•: •;:x= ::Yt.tr':... .i. «�r;... i '! .J •, ;f j s, altre �f� , �f r-' j�, ���''� ..k`• t•.:: ,L•'S>:':%-.;.',�.:.•. e::. �.�••,_.,_..,'�;, ._. :«.T._ .�: •; �1iL" 4: ^�: � ;�;� '}:�I, +.._ ,"?' a ry�rt* �\t••' :;'1!/;�r�l�,�+�',7,,,:i: `' '�'-' -y-., s'!�_�` ''WI! yl. 7,.p' �{ , r , r .>; !•f 2. •' <" �0;:.^, tr !��� T si " � /' fit' �.'`rt `\�.'r- `�.:. 'n4 11 �: f _ ..� 'J. }... y e Is'.L...t; _._ �i S:::S.•,..\:-•:i` ei'.tZ �•... 1 a]\ t f 1 t�.,F (._ !1..t!'ti'i`r i tT�P•� .if r!�, / : ,/-.. Jri.:'�.�'�' '•,' x ,t. ',L�.it�i-- i _ ''�-•t• !� 'j;*a _ � �.�.tt_�..F4....5; f } .,j_u .%' ..11 JJ. r e $.r.%�`�1. •;x.o;':` '.-l:�.�:. �=% i o � •f•,!f . J• �'�°.�7�'r',,Et f,r r��` :�S ;:{t'i }. �rJ„:Y.,i t I, •7'L`Y•�• ft�'3_:�r:.sS:`.1�:y. �'si:�:"•::`"a�`�f�:r' .•rr.,. - •-;-�. a. .t,•l'•,.;:�_;i ;i. ) t r i i ; je �J, �,•nr t /y _ �t t _i• 1 i. {.sj..•, rif,n{ _ y: !',^.: ::.,,,�;. .r i ti::::•:,:ii:: / ft. i /• l i i.: . :-P- A } --r -'�,'E.,'7'...: .?i�•1• ,t� .cr •,'� !:j-`•t V ,Yi•' t�;.> wJ• '`ftt. :P..4y o,t��'. .;L:•:'!':j:. '? �C rk., 1 1 1 i ♦+' `a i �;`.}N ' ''•t n "1 - Mel is I• a'7 tr. I;'.L:C �.r- i :t.;:s+ {J��:> r Ru '<f! e •3,.:1C ,;} r S'.� ��'•.,i}e,,:ll._c.'� r:+';1:.,,i ?1 �'''! �+ y E j Y•.. • rJj�S:e�:C!D �I`!r's{s�:e' �a,sa� t „{+ ::_;t:-�e.��;t ���;.i� ,_?,t?.1 -t3W�f; w....,....1-•-- ...}.r...._....-...-..,t..._i � rf 'ra'.. .vrPiC, q f:'j ki'f;,,� ("'•r.} ,i! i i40WD r'M r, .,�;J�.�1}:s14�r�. ,:.t'�•�i''�k"" t^`•'9"t _ 'T :i, ► :rE L: p,�'7I'..�tr 1 i } t1l a, f �:�•� "�r':e��-�•y.l<�L It Pn� rL:.% ]}�=`=`:�e'�r :.i'- �' -,; �'.r���' .a.: `f. ''.t•,�.!•i 1 ; ,i.,..••'' t -i•.,.....-.•.y.•.!'.i �•� ,;1 1 '` •� < ..�' ,,` „�. .I�'.. ?J } T?. frHs '''rk^, �\ >t._,h ,i i�I,•1 ,`�` } '•'� .•-t:' � '.�. �Y.1.111 r.i .,.. ,}!Y.:.f.i'r'� .,,,,.f,:. C ....w �:r. �'� .,a:.••• ,4': ,a. '.,�:�f• �' '»`1"^' .2't �}I r•. _ ,�q.. ��.) ,,: rlrY'f11;�.. -F" x, g--.T-•• .i:,, �. ♦ l:•,t,:' .•a:::. d~ s t C�; JJ _ !'=••-z:�:.R. � � ,tt .:r:.•z;'r' ;;r:fst, . , _ .__.. o i 1. /,• sil'-� y %'' :t s l'it!t7:�t. S M :'!}.:. i:; 'r ::i3' • 4' 1 I LL ire� w<:i:=,.- .-.' ,w' {• :.'W. �r t 1 •, .0 ir. , i �l,r-a •'f•� :.,: f r ,i"t�; :4>ry-�rL ,4t s• :�. .�•�+ r:. �` ♦ t \ I l 1 4 � '\. •r•' �ti` N; �< � %� r��e'I sryc.!I'ki J/1'�"" 4- -�.. .'t,. 1 � :1,: ��7 , .Li:{•i t \ i •_' E ; 4n 1 •!t � �!!•*�� .'A;`5 e�.•�.!w err" :•r'r'�•'r:.Arit�;� �•.-�,�,}�• •r�;� .Ii t�'�y�� s '! r it 3 '�;' 'i. 33'♦} •} \�• i i I r �\ . f� ..S�1' '... s�1 f•_i�lY/f,�i�...f./-'jr. r ;,3: ':J,,•�.t:2 .W'• � q -'}�,: rl.i E 1: �♦ _ w �• �,�'.�19 S Zit, q .f`:- �r r �f :e� ,y�'df•�¢.,:;-.0 �ry s'a<:"�,• �. ,•r •} ;, t l '1'---' ..Y•-. ..�....� / }{ •� 'l{5,,'�i1 �{t�".?+1:}.,3 :}%^"•.•i'ty-:n l�t-l.(X;:SH�:Jr�r?"1; ..s:1r1�}k��}�`.q:{:• ;:f"r.Xi '47 � ' � E'Y� �•t��`',':�'`.. ,r,tC^,-,-. ...�1�•-�-•• \ • 111 // ) ` .Sf !•2.•<'f•ri• �:78.: 1� �Y•'t'�',n.•" I'f'K� �I,Y�•.�"�',•.sL�-u� �' �•tI+ ` e' r �i'-•'.'i Y..i \ �.'•a..�.. �, _-`r a � 1 r~,' r• t ��� , 33 r.: ". .!,fin _ .i .t J YJ'E! ,a y j ,,t. ,�•:, ! ,.- ...,tC....,r..a ,.-�... ! ; 3 _ t.t .,F". .1:= _i:,.4_J+ _!�,J,r� ...4 .' W7..-.4'�..�,'! y .y }� •,.� , � { � 'i )3� i}ri.'ry,• t•. •.t"", 'r •.v' ..�.....� � ,]�' J is • •}....., :. jP•' l'.':-_"�•`� �`l J ''r � , (1 Zv'•-`f'.J` •'A •c nii r`}:=r'Y.r' ,•w`' t� 1ST '',:' •!•,\,at SS• / ...-:r�.....� "r I r/{{� 111 y•rr�1�.)�:}:i, -'�;`7'n: t'~ lt�'L,J.r n. .•ii if/I 1• .�,1 f:, �1 t...rp .,,,,,q • r3 1 h ••�'= •:t/17!!' .►-t +.>; i.y '��r r �.7tjf�YJ.i', �y,L\ .� `` }, ♦ he� s'� I t x.`,;v ':L'J%':j' �h!tr�y.'.��,r"r�:i.r'/-i \..1��4"��: ��.:t•.',:. f/ ��',�� .i'A'.(,1y,r„�, %,t,.t, },y�' ♦ •� -}\ � � � 1 i r\��'1 '1': -•'1•L,f,! ,/i...r �u',�:� 't- .rc;.' -.��".'�'�'�.� .:a..[`::: po' t!:_" ''l-•�' :.�'':I•�" .1 `/- �•. .�• \, � ff j ((!E'_�. "�y.'s�• �+.•'.'� :f��.;T}� 's:.zyys. ^+y t'Eyf�i'r i �%?�f r.. "::...•a�J,: '} t',' ,� a'P,•ih `G�'!,j5•�' [ tom' ~ti... �'f i y ♦\ S l i f t t �:� ,j� �'.:"•-• ,�� •+'f Fl.t s•D1'C;,r::::�r'6: -�:i- .Kr;�h.;� i..J,��:�.. �t..'•.tr C."li:�',.,;1' •�f. :T-: ..ri •.1 -` ;.• F i r:J[ i �.�. ,iq..7.r�:i: I :y. t .f....t•, Ytti,.•,• ,�s^.....:1•.���.o. /,:ri. .:�...,- ,EIt'.'�.�+.,'n t •:;t,::1' �;;:: /- j '•I �� : - t-, t.,, �� r s:' ::J•:r..t.,�:.Y ''J +x`.^']»'`7?�i � a':F � t' � _� ]-r-";!S. • •.ik S•"" ......._» ' _ ..�.._._ �..:E.�.:�. '. ,� ,,.,`, t ] ;i:h•;L�' - --..:. l .:5�...fir.;•...,::-..s:1 Yt 4_'.6 4. ,•� . '.i_ ..� .r ..,�... _.a•,-••-'•'..-a•'^'_ ` .1... ii. 'a`S i y..r� � ;,:f•.�u ., ';�,-:�.;13r�"'�.s' - r :i!�7't:.iif � `� + <f.r' .`�,r. -ary�- :jS.��;��•f!�.7!��'%!a: `������.'i'�.•k,:..,,�;��•:�ar;`'Zsf,;.Y�' t �, + � � t Y.. w.l""`1-.ti .\. �amrn:�":. '!�•r"':_...,;.;,;y,'4'�1.. v :a �" �j(:�Y - � a 3 r S•.:.....1....� .-i+' .,"� ��• •• 1"V,,'t �i •:iL'3,1'r'" 1 c[+}:: • � ljr.__����- r. 'K x, f�.F i - ^•_•., , i:G�'4:C,�,- - - .-�.ti ..ili.t•-, #t`"� �{xr..'`'^u •�:�'a'•�'ai:^�•._ i. .d...it Z�k :4 tr*"' a.., '�.a::l'L�-.___. �•- ,[ , y 1 r. av_ x1a :ti.xi+C1 i.�,j: _,`E]t 1F. �, rya-r•.t f -r•�"�:r�LI{ !�i a't�'� c3-:t: i ei`_ `.,,�,., .....wst; \..\\ '. r J - i•I a,: S. :' r, a:4,,�,.s Ji 7 'uk`'"'• '�r ••-'"i-� t."Ki�ti �k Yr}r 3, .. , - --'At iEi-�'••if 7if! {L.::; L ::rC+'r.. G:i....3,f�1?s• ;'rG'•�Nr:' ,% r ';,•,n' .', 1.A ', r ::i,.-•�� ` ��' v; 4•.fz Y •.'St v �e' �4.:.r }r�'f"•�.•-r:'•,�v, `';q^'t`M'•r•.`-_•'SL2:; ^.^M.'4,',.,7r-T4!��<C�:'1'tf�r•,�w,'EF�» :;.�;y s!'f' f 4. - ; ,�1.+k' ``` � ti t;..♦,. �(• i�j60' :'t`tL••'."-.:7J''ii ! f•f�a.,i.<.f ,:r '�$tk'?iutTlt<.<.'!t."'t•s_ R•$R,>:�:2 .} a y :�. .. � i• •\ayr \!- t y "G[n. i EI 7.f+�.^•n•.::::tr!f[..i'{t�"' =ut . ,"1?;(.cy`;r�'`.:.•.`�" rl""' ��'f' 'a f i'i ;: ' i�f V�J" -*;'.' .4: i, ' .�r�t. •`. ` 1i 4 1 1 \: ",-4�,�. j![ r. ,`t..,•L'., .t.1.r S•r��,'• ,.�_ ,.t •i}. Si i- . E :, i}r, .,<. l•�_sww:,-.r ._..r. i�r.':�` .;,:' z.,+, �, �.E'4 d�. �'. , } r I! f' 7 .p i:'w.•!" _ irJPiS:sv.it<yC•.:C}�„-k.. }e�,-'ri��;�. ! •� , • t s ` 1 l ; I: �,F 7 llrr/,�.•.,F�_'•,.y ,i� <. .Jr.. A..; ',ji:'� �. ...-. - ''�y�. ft� ,r }j�",!{� ,.,�! .�'S[1, -�?;, '*y�'�• ,{ f«(`,;r _ �,^t, s4{�r flu .1�"t. r`ii:`" x i ��..1 � � 1:.`'�]�';/i-'i;�-:t�:Q:_�F't�:;� .J^..ir,1�*:qG�':i._"Sli-- '..e`;lf:f•J{j��:��`F.;:t,(.f., .!'fJ'�kl�,` -`•'_;Krr.!£+'• .' _•�«, •�, \� ° . /��Al r�L ' ..f:S .xl:•�M,.:.�"'' :/TI:Y"^✓'T.^•.a, ^''"''.•`f'71, l� .%:;'Zi .a`•, fs.. 'it ,ri .. : ` \• !�. 7 `! • 17 V Y1UJ x • •�1 t,..�` ••M.:� I:L r •�• 's"..: n.•ti ErJ��.;�'i=�. �Sv4' �,•rr._ � s,•���", _t�•.'.� �' i,t `�_"•. ' ,e�'i'�+s4•"'.n: •, e4► .two �, ��•`t t:."%,. �..4.rr,�.'r: 4 ..�: •�_::��' X' },.,iy'.�y'�t. *>.n a jF ii, .'l,� tr'••:=•i � ,.,.-ram /J"�. - :',`Y.. n'Y ^j: -µ .i:..:*., i .,.,F.1:•,���`��f..+,• ..t,y?�,",, �....i !� f,lt,4 `•. `.t `•�I ► t�{p •�' L6 w, r♦ .,. �. .,, ri:ar .li::ti i 'i'•'F•'J..'r�ia.._rYt� : a.�"4'n''C .;'Y;. ::^,r..: ? x.�i '. t ty�• 4 t r-. .vx.r: '.•n".. .:: •iCJ'l'i:;'1 � .�:. $ �1 `��',,� .n '. ',�} i J• fn t• i. ;•t'ai'- :-••r ,.. r.'�;y.s..e.l �%':'.t, ,w. n '.r_'f'' \;o-' J.sa'`�_ �4 . ti,,t:•„r,>`•< .W ;ri ,t �,•,'� y;A', ;'Ca� ,.,,i'�:•:1 � _ :�v,. t, �; :.�t � :�.►�� __ ,r��...-. -••ak.•'ar• ..'i?.b .i=« :::w.;L!?:�:•}�..�^y`.',�F...1 +...��ti�4�:^ j�-�T'i '�! 'G:a:•f:ttt•, ^.ci? >t ,�,... •.,Y�t ,. w�•1�„'"•y ,� .. :."ri: ..•r. WAR ....J,t ,`'`„'.\3��_i; 1;E, `.Sti.._:.��s?:. j.•.ew. t`'ti-,•4... r.. i,.. 4: ,, n r...L .�....,,' .\. • '� •1 t-=44rTY„`•i.:'1 ):;•P ,'sl,.._ u �'11.:....►, S .t., •x� ^ J `,i., a T1. +• r-`-T""•.. i, i_ /' ) e►•~. ��j�, :>~`.• 1,._ +.�9k,•.,�'*�,!. t��tY •},, •►_ ' ,4. `.}r- r�tal] t I 1� 1 '".1.. f,�=[.....\•ar t •r••.::?n t'`t'" t... _'�•!t � y„�r•! ��%.N',•,;,xi,�E t�'t'i• J, �i a: :l'i t 1 i't �� I a J♦+ 1r .:U �'''• :f—• f i s e� .r/ f r !rt+y�py..•a' :�;7 .Y\ e, '.,•" ,,. ' 'J r. •.i Si I/ r 'I i t ter' «.j �'r:•:ti'i,,^t 5p,.r�,;. Lz .Z,,.�t•.i+L -.,..t.<R 7?3'!t?:yNIX., r r .</ 3•t ;a .1.,+q•. (Jr S' J .tsTft' .,, r .f, •f !✓ 1 E t l' A i ....f .__x4. } r v;-x; �.rCot '.LSAr�. :%:i',I",.,W:tls ,}`t.•%.:1�'•;�> .!;'ft � t : dt:.i 'F' `fi3,•"ir•re?ei'r.t�:.j,•`• - r+srtir,J^ ,.?+at"r'^': !,;.'ti; �"�,L:: ,.R,�tr, AJ'!'<.y f' , 1._.i...�... :_:ir.riE:Y 1"r�,JJ•/•,..ri'�:E.lL^ •i -y--, tt ••..1.q..•.^_...».♦_.,. , .:.,�!,.�" %it?ia�!,j,,.�:: .;.�•_'"�;ri.".a'3.•�[: t.;:.a:',ft';.t.t,! .!<-�!, Ir ..Ifr` '�>E' e{.:' j -'F.•.. t i � / ":,•.'r'.R."'+:. ::�,,{ 1 �S !L: ,<9» ;.jl �,J�a. r. jam;_w ..M :. aAi l, r:Ne�.�.,:.. �� !•ll ytr!':d- 'J�t, ,,.7��� •^�:S �U-(Q`'\\\ to 1 �••�.� �e � � •.` ` �. .;;ttiyti:'•'Y :r .'7. -Si-:T "INK 7.:/' k«9•r• •e,-. ",ie 'll•. t i 'vj. ! a i r -:.;•.. .,+...:_ �:.,rl.'.a� :f!.r'.s. ..�•.�n{•r.:4: ` �, :r.f t i.!':li(if 'rr• Ci.E`-"'•- .",f'�• ,tf"•%• r i Y. , "''•%..�� '.`.4�.�.•"�''.:> r;i•+-S; [,t r:c•:�i;E.)' i..'}J1 a/'; :E•M,!(i.`•!Jy s,\�' ::7:. '' ! '�r.1 (• +[' r, t s •r •[ .I prior :iis( �Se i:I+iticics.: :i ,-•t3i['i .tal. :,...f?,. r}i' "'_.7'f m ^ys.t:.Sa `f• y' JFi l I ♦r_ } "� .".?" :'':.X' 1'!:,_R �er:J:'fr':• c:� 4!*• ='�'•',Q .t• :,71 i i t J- t i i 1` :Z51 .,.':Kr ✓.., r:•I:'.': ..lj r. rf,Jl•:._•;\e..�3�'.ft.E�h'Ti:'.: ':�`A\i.�y-i .:-r _,i�t�.��'.(� i•1 s. :�• 1 J\` I' K""`� i ,/ �� t f, rR y: , c�.'f_{ ei- 11R-1' .f.•s r~ a .1'�i..'S L �:f ,� ~ 4a' i S •�j•'� t��'^'J �:!' �>:•�yw�: rY1.'•.,.'•'a'a:�F11;, t7..��'Sti%•, .,�;n i i r, "'�'�r>."' ;L...A,1�t!xrr �i i `i� i� }� a i 1' ,q . ,: a- sr• !3r ,.,• ,,.Y t,• %1 -- '�- :sz._;1_.:�'�;:�' •'s�;►. .+Z$ .:tT.Y.�;l.?�„' .,C '�J_.�r;-.; -'�'.. t ) .F•is�'!1: "'J1 ..n yt. ` T . �:,!'~ ',fit,:. t,i,�•ir;•Y 'f`ty,•.!'r' ':k84,. �s „ �'•3�•.: 'J's! r,:1.1'%:{-•• •1`a _...�. - !'�".�� T// ..$t. "t'S,a .' ✓ �• '�:.,.?'�r ,' t•�;r( � ':,,,• '.•^^.s � _�i.�+r. •�_ `'.-=`-� _ -..ry.--_..—.._.. � � t �t.....'�. �' ��'.;iYi:,:<;ifi,,��•r.r?7E:ti`fr•� ,.XILf"i''� t..a •!}- '^it. --��� r,f• � ,.}:};:t,t :�i•:?f� "4 .r,� \ ~� �-, ��•'�•\�� . 17t�'� i:. ;E:J. .;f:!:.jtS7�1.l;C'.?'.' ..i','C1:.w...w ..f..•' 'T: � ���d+,w�^�•..,✓,��S�,:T. '`h S.. `:t t.i f7 l4' S � '\ ��. E r / � •�ti r ►i '�JS �, :.Y... r... ,+-'S+: ::�n r,, ,:y,sI_'�•.��f.... :. �tC',t,.r8i(?er'' :�„r vi :,�` i,�f `p; !'4!t It.�t,/ :7, f. •`a.- '•� i i ,•�_i�.E!r:�2Yt� ..:.tifa.<'':1�:•i� ,•:.r7+ :iii;;s',<.. 'I�il�'rJ.',`'[at::'_} `fir ar,.,.3;i £'7.. .: ,�!, .{ r :_t1 \\ y � G -_�W [` •: i '� a=� I :3 <rfw }•�: '�'::• ? Y w: r r'F {J •i: t ` • S► • t f i i! x^d'...s_yal- '' ;•iit':Y:,srfi i s - U':i 'Y�n Et" '4: �,tys 4 ,J/; '• lk 1 y �, r r� E i;r ,�.,i,,,, F.IL•.••"S::iF: � :.ti -_ :;7 ,.e.f� ]'•' ".Y,::•�:t..'`f �. •'r,�f<ru C.,�,,, t/. 'e sr i't `{. :n.t/I r!�. `E '� ''. \ '� , r ✓• 4�,Jirv.....ei•�r<,n�. CSiw )'i 'y11•..... . :,IY'-�....?a'� .F' :c_ i4s -t it .'•''7f :I iSh:aea i._ •'� ` M 71 t c •t J s i i !'i Sri c'"ii••:±,ca.s .G;-.'U:'-,•Cf«;• `i''•i. ..�`57.T• •4 r.., .F ,(:i'a13( -�.'. psi:;•-r 1; �`ir(ry(►J���� a + .:..i'v�f:'1.., ,fy�i(Sfi!.�/yJ�.r t-v9i:..'-vlC �'�vi�.,.� %f :i:`a�-.0...;:'r.'..il-�,,�'}ah.,i� ilSl' 'N. ,�^•,r, .)I.=Y`=a�•• , ♦ ''` � 1 1 !�_r,,:..'•-�,•:r �, jX �i ' MV s,! ,:;.']',• �C `5y� i • ,p ',yid' �,:J.f.t'n �3 /y,•:;'_�4'1 .'/ t.t \�•' a :Ff !..::•.,<,� ysw.i._ -."'t., F7("�Sz.-,s :Y' J'Y',,.., !4�1 •. °•mf/ rl:s r S!I'� J ` t h i l` 1 t .:..,f ..� i' i R ::L'�►„ ,It! f'r .;t..!.;� s-,crY, f r' rJr,"' .L::.�v,t^,'„r`4t:/i ,,i.::. rj• w•1r.ri.!` it f :• \. 1 fi /i ..! f '•:l:'. y�..Fr,�•''�+'.<,t.. 'D}'�=•i. ri'Yi ;.,�T, J ..1 :O••r:1,4 'c.. `r, r ,1/ ..i ry. /' .t•_ ff tr,. a. .�. pr ''�- ���.;4 r:, �-�JSr :✓.!! 7lao [ = t t .. t 'i �. t' t'Ayy'F r.> .;:say:{., {e� Jl.�x o "" ' .l•,: �r''l"..,'f�r.C,; � 7t i ! 'wi. ,ra�o � '�. `�,: '.s !�. ,i::h�' ''.(if*,..� •i�v�''-n'��p4.v►t. %�' •i *��. .-� ;�rll.J 1 tj%lfr a ,'ti i t , v �.,.,...,. r•/% �riJ;:•-:: -• : •F,.. .� µ•':`''.•C. �!bi.:;.y, f "ia}V..kaP"`, y t;Y 'ec .:.4, .t,lg"C.w. '}L��r „ ,♦' }a= W;,,iJrt»,`. '.•ilsf, i .�)"' a a{p ;.A.. "t' ...1 x.. i::i.`'R,.,...;•- '•�:: .:.,.:... {:}' 4f i`. d7,.t < �i.J: t;<:rY �.�af.Y v�' ,5.' t.r. �,�"'' - ,T4 1^ s!c^•Y --ai a r,:ti• -..i .; .}.A t�'Siis ';�1:i' `.'"...tt..^'' r;jc•.t. �454 icTi'fN,-, 1•'es1a�'ye1�:":v' .LL:t_._......... ..''f,,,.�,Nr,►�,•,y;"�.,.._yL :1`,l r ' •k3r-'s*.:�,+ f,'r s. .r..:Zt ti.:,"t' ;�'v`�\:`.1; �a3r.,.'�, i .,P ff:r r l..' � "y♦ �w•'�-�•;, •..!�,`^• .•••,!, »tti,,,..:w`�rt�:t:Jr .eeN 'l� ":)n'8 t' •\ C-�' ,.�� 1 t �,. :.it.^L7'..tM .'"?`-:;L:i{ci'"il,.'c:t' '}, rr „ 4.._._r.-...Lv..> .•..., lydr Vj� .._• �.'..�r. \,..� r , • �,� �`: f� ;, ,�.�`rr'-:-=:;r• �.. r:tX-,•.•. -�....t_ ".� �•rr, ':%i1d� S.. .g..'•:F''s•.,;'~+i: 't' :._ }ic.��•;•1' 4•�!. �., .r,.r J i t ,..•3,•.aai .... . , r i ! �,.,••'.»• :�'.{yl. :i�♦ �.:.�'t.'•.' . �`+r��'.a .�"','t,...`�'q+.:�t•r'ih •�.k�try� e°' ,i' � t'.•. 'r♦ l f!L. ! � !�*1 ,,i[: �.. �••/,.'lti�,\1 ;Ji:'E' .:,�'~~"� - :ti ..:3• ��- .;� <f:>, -�T�,� z r r�. ".,. .-�y�!• .�,r..�' I s �t �:.� f.f ,u.. _' �i. :;t �...'r: ! ,t�i.` •j;.!v.},• �..<:�:ti'\;x,,�J'�. ♦ ;?�'`\$i<=^..<?�,,:�5 'Zl'±.:•!e 1'•:'!!! � E. '":tir: t . ,� r �.,�t .l � � .:t'f � .{ : :,,'.-•./1. ._"f"wi •.. } :I:{'Y` ?•J:'CRv1R Z 'av•: E .;,1 �ls:i> .� .' Si.. "{ .r "� } i i r\ t :S\ \ �, = r f'{1 ,� :!:Y .,.t�•-.�•'is ;�t:'^t�.Y .;' :4:n:;...:,'J.�?.1�.3•-t�i:,:fir.f;�J�7.S' r �;ts'i'r•, }:i ?p` E [ E t ••j/ ♦ :.,:�'`\ ��' f C I 1 d••[. ..,/„i,C:':�•. 7. ,\!r :.a: - :;�,�,�.:•E;,,}.: '\ Si I t i I ><'-a a, `}. •.. ,t t\\ %� J i ( 17fJL y.t- ,' ! -,�.., A•: F' ��.{�:r •�"i Si 1 ! \� \i i\ �~ r/ tl'� tr:..;�..: ':_ (iva •", }/.,.,.�: � d?'.;y�f i r tt 1' £ //:r/� i ? r •t \r t r .%�• 1 .\ ��• !,f r// ,.�f•'r:: ' :� t:.:r#:r`":?:s "✓' .!X•:.':>t. .Ef'x<:�L- 5.,JJ!l7l�ytix tf/.TJ f§•' JrXa xV 'T: :' r f } t ►t / -•. f'fr r F' ,t; �4:i=F` ��tJ •:Cv�: ,. r I': ,• 1, ,► tea. ,% si. ..B-�"�`� .:!.i•.tG^" `Y,,.y�:t:'t..'. .'.�y�=.:,.4.'�7:r��`�I ji: C..,,.i;' �^• '� ;i�r^'� rqf r `� r ` t l F! ,A�sr J `.....,_ , t• r.•• .�:'si:.xt,k�e>.r'i.';, ''v ,'_,:-� ti• e !•I• 1 � 1 / '� �i � .,...-.�•r•r' r fi•• , ft �• .I. ... " 1 ii y t.....d� �' {i, f �� f sri r i •• � ./ / :" ! 'it •, t 1 F '. ri t,. s�:;a�`a•._.. 'f.i'J v' .},;j�:l::/i.'.<;t:...:�1.ytti+\'`',' ♦`�`11 t:t l,L.,,..' ,r.�`•i.`,?f<� t�,�"�• T' i � � 1 / d� t� it 5. `•..,,� <r �Ir !I %,rty�@..` 4�` :•. �� 1 '.�''i 1' d t i t / N'',r i t Y r `!s..tea:; �. y °M :?s«,r,, ^.f:. _ ,.r:`.trr•, .a.1t'�'.,'.'.y;,•.�/!JL :/,s:�:r tt,S?=`'tr l,EitS�_ •r-H' tsis4?"' •:f i ;• •�� � /! . J.�_-'--= ""�*'' {t� r/1 -iC"<'- .�.-";~ gyp.r;;>'�..,f:'"�:'::r-• f.... :.„t..t,. ..,,Y.f....�}!ly,:.,l,.'w. a _1,•j'li('.. a..a ,:i:{ s ./ _.�. :.! •-�'"'�"'7' J���y�yt :.:.. r ...`.�t•✓'V:;SwtfxF' -- "•F"pj.-•rr.'trl r;,.f.>,i.tys��1:irj'.f1.i� ,F,.li• ,I 1�'•t!k` '• ! _ tAK r' { I i a I 1 r ..�j �I ..:'Z.>t/'' '•`��`'<�.r `-.__,� .:l�rl,`.itl k 'j}'t'''t�Rl �•t�.Y��.�:'zf•_i.'a ✓7�;lf�$� t'r r.stir l;iF�f t• rJ ,/~-/ .r'r -/J � I t la'/I 1/•�� �jr•••'}�t [ J 'r'�', "V .nn6 `��te. :y��<.r.,...,.:.%-x•-•'{!1:: c.. � .`.•a,?••�-:..^'i'`s.:..'���� ;�t�rl � T•,�: ',� } ,/J � S'a �!J �.., t i r.. SOC '�t. -••_ _..'.�;; :t. 'N+:',�''�'+:E�'-.�.u,...yr:a'S.�,r�:��r�1--:�.! ..t';'lYr. �' r-•t� 'T f �; �` y .r � I� i x. ! ♦„�o �•C:: � /'' ."f,,�,•' =7�..,�r �'-....1.:ss':' =:n:, 'y t�''�,��r,.i r�r•,�,i:+:.;''t .e ,!%�:'/'� J.�1]�••i� --i/.it., 1 f :,,•.d!,,:�• '/•�~ .,.••. y�,' i `\a i ,, .� .- _yt} r..:,.f»iS, �1 yy.r.,C\''fin •r, ,i�y 1� �t 7� -._ � r..-... t" i:rr: ..... ',,,t,�,i�'.3 y:�, <., .�.=a j',1"" 1"r,-/,`•}R''.,ua��7}. �'�,S .r I ; ,1^•••.re yf t• �. , ;� O• / ,r V.:; ,,.; '�... .:;: t••d /'•', •r �•`/.�•: ^�`1SK'Ec •w,_3-s•.,:t`�,''tl. ,. ; l .}•�:, s �/J 1'� � :t ..4.,.- •••;!. . r.• a.'E 'J.�', ;t/,!" .:�•:7wi :a.,f,J_t `, f...fy. !:A�•.:)�r' tlLLr 1 •.` 1 11 / j I r -. `.. '.I... f i'a',.r..1i• ri.�t'.'L•.",.. .., '!i• i :�.�:.,. �ltf� :/:i•� i t�':r .,.",.J ..a a� _ r' ... :.,,:, �:t: " _r-:��,f .m r '•�:�r?•�y ,� .J. -�} .1 __r ti- �.....:; ti.�:...r,-. ..�. ....f...,` !� .;...r.:�.../..... _ ,{2{� .f."�:. ..�.. ..�y�1a:.�7.s..,�• Jrh.::•«fZ'." .f ��•f�-� i „(�^Y�rt�Y, Y,�•1• r�1i- , .... it �• .r )•...._ � �"�.....r•..:.. ^`Ifd^ i!lf�r.;t [. :3.'!y.7.,J-.F t.. ,1/'��!'• 1.a ;[r' ,, ;"^•':•c a��•'^-'r`� '11 t i[ C) •V;� r.. li a':i r d i:i:F:,.-•.[ �2i a,�/ aT I:d'r: F ti. �' 1,1•'i a( [ r,l~ s f r �Ma. I bw-, \/ •�;1t 'j:.ct'" ': iY 'fit•.Is?' /f,•Lca 1•. 1 .~<7, :} , t _ J \�.•.-,Lx.•u'\`+.. 1 1►, •t, 4, �' �. ••Ji( li..,��t"�Cj' �.,.,r :at:l•t»•` �t ,.,.. �w.,;,'. rj ,'S '1 'S.a \\..::-^•`. \. '♦ i - �'•J•+•t'l�`_.E.�i.. �'i',4:�.:(` �fi,.'�f. -r�Ij�'�,Il f•-.r'.�.. _r:-,r •.Jt;J:./Jrj�t .! r .� �� it�,�!"'�t.-,.,' \.•,.�. S f �. - f� '!E, s7'SO' .a. `; ,-�i� �J,".tyi'a�t$.EIC i'_b•}fi J'\,.•' t;; }.. .ir.,,. I {%!'/!',J { ! : r ��1 li t t� \� `\ , t.....r1 Y-"' „y, ..\ } s, 4 ,r �. y.yltt ,«; J:.! � 1 ' "' � 1,� ..,/ /' !,� 1f ti L r...riu-•� .'.2t+�'�."t .Jq. J'Ss-.k. ( ':! rr rf i % c .,� � f• T-•-_••..' a ( 'r. ,{:t•. :�_r�."' ',.t. �" '�.:��rL:�. 1.� }t:}a JI!. .r'' trrd•F• y'c"'.an•'••...-.?!.«...�.. .-.-1 Jr.f ,y�r, �{ ;••,,\ it._ \i.1 it _,}•/ ,�N J �,11f!`� •�•t 1: ..1,.i. 1`'-�i•i r .ay. �� � i �' ...r^.• /•'��}( w.:�:C:`' 'a i��♦♦ �� \ t rea'•i_y / J r .. _t��� r}r� ;h' ,:�G it `l �.�'��,'•,t +ai ..fir;.•''//:'f J ! +r,y r r 1.✓-•'t `.•.`a�.� T I:i-f.. i / ! ^ '?'C-•SR•'r ;l; '�.:.i t1'=. -s .}'!`",:1r`-:/.ti..'y,:li.:��7 ♦,= S{ 7,it -�t'�{' t !f�~ �• 1+ !r.1 1 �..t,:,,Y•�..,\�1 �,.��: 1?: i "-i 1 i i•/ t_ ,.:. /!:r` ,,: , ` ( , �• •�:•._l/ ;t,.., , •I ..!' !.�J J �t}, r J •i :< r..1 ll ",,, }•�15�. �fw \•' •7,i t'n!`7' (�• i/ .� r- .:'/. :;,>f_:G;':: 'r�r:'-i=.'i�'�j• i :r:�.1C.,r; -'l:S-1�,,!:s:.�..x.. �.r�,{ i'J�/'`r7.:' (� i' I -:afiaYi:>'f� L�A ! j rr�.:.� .✓ter,.,it... k}4. �• rbT F••! •::>�. �r •:�';�1'a..f;-::Y},y,.3t<,`'F.1r`�s:.kar/1�Q{C'1:• �'y.j�I. r r ♦ .w�i `1"•'; i r ,i' ...•.r•� /i;�!x�(2 ,. , b i•:!N';! ::iti r '';�.:.7 u:t.: 1 ••t`.♦"'!t4 a'1 r�♦::w•'i.t'1'• .�Jl::/% % t'~ :' '�'r': }N'�td tt 1 I i t..•r/ ... -t♦� r•I'W ^r/"�,. t di •SW 1O 4 ,.f:t:•js''..J %rr .rtr>.. �w�a,.,�, '!<7'.. .f - j 1•4%i !r 1, r ^�"•'�''•-- .r •�•• �4i.93ys {:f. '. .>:•. '�„{�>��,t<<; sf"l! ^DJ' Jl y,:,•_..r .�° ;; iJ�> ��••:l••:1 \ f f jv" ,,:.:�:(%?t- ::r:,x7�` �':�� .:•: ;F_,:;i.'�..�'.'S 1.' e:•"C' ,{�/41�,}�a�.ti .Fn'• r i r:'C:. i' r I `�\a'-'rr//.l 1 r^.« ��i`,✓/ • / 4 '� :t• •' 1 -r 1�,r<• < 'r� ! _ .!,•.7.,F' it- ,..•v <. ,^���,r��'�(r • rlfJG6f s� ,.. v � Imo.,`.••'•r', »r'•' 1» i t� T�}•L• 1 �k..iK.,t .f� ..r�,'1/(,J. _ �.t..=w:Y.... !if•�yt `:':,_ f ;)S`'-F. _ bile.,J'• y '?F?..... '�K...< •., � I ....:�i f •� I'�.r y1:�7`K 3,1„� . ��JsrJ.•,..�-ice 'l. ; •S :L y"1•. r 'w� �:t` r'LC%ir ,.A,�, r r' r „`��/M. y<., �"' ..7Gx'.-ft�,,�•7J ,I =', I l'>i,•.:,-..«...��r r•'` r !'" 1 V i �+y.-'}hk-, c' M(i i;t,.. ;4 ��y -�;rrtr�s•!}- 'i-i h, �.(�;;�./9%:.. r, �-: 1 f.T�iF(:� ! y {� '•"S �t!1 _ r �' ✓i�' ,�,��r_,•�.a:. ":''F}l^.r. •�n�'!r ,T�� 'l' ,•i t �f! �J.�'!':rv� 1}� 4 .,.E,1 ��' �"�t�,.`�i�.f.:t Ni �% [ •/ j f�._.. 1 � _ �S ':�<`• .(• SX:•• ..{:�j�•y�..,t� k f ].A. �y '-•r •• S?T� ,I Jz:• s f4 f ��`',7'.,��5'''•.. �"'-' ,[',r.,.c�'\�J::H.``\ 1' .�,.f 7i:�.r. 7♦ry e i i �f�::. �•a �,� Y .» .»- ••••w�------• r•-"~ '`+: t Q i.i ^"��'al'/r-,;.f•?'k.t�' �" :7'';'r '[{::�t.M� N�•�:f:�: J. ' f', _.��;.«r...' "):�. ..�.._-, .1 1 t i S•!t^ �i s j - Jc -r:I. ,�t ,`(,� i.S. .tiEL:I.n:: }'fX' •lJs.._..vy. •i r• fir, �: i S;. ap fi r =•, T! S fit• a•Cet %I t ..}ti�J• ii u?u` r - J�Y'Y^',4 it• J: �y. -�s- .:J?•"•1.......•....•R:.,...�.,•`."ic•..-...r..r..-r.. .it;7)•r• ..w ..w•••�w...i..�.�4,'�••>, � it tX�Y" :r`;r y:1 ..,rt'r.. t•Rb::. .-.T...y.r r ♦ .��• \. '.�,. ((lrti:;�:,rt.,;,{�$4,,' .,t':i t;.,Qe�t.:,•..;t, ;rJ' ..Zs4 'ST: ;t:Jt::, i....-..•-••-•,.�? .r i I t t I'��L~......yf ) •'',"t'�:< >:Si'.::ti.. ,...'t'yy' ii^.�V•",�•�F ,•alti...h a 1�a:� t 'y.ixS, •t.. :71:�A'SSt; � �' j .. r.,' ir �`•4r ,':1.'. ,lt,� :3. _'.v. �. •r.,,,.. -'• .l a f` } x �a.= s J t: ',.,: ;�:: n' s:ii ✓.•.�' r fT' / �• r ;_' •'.r _�."<',• _};�:C«. � ."L6..'krF<':3sr•tgita;i?t !1 1 ,.'i, _ .�':`��,{-, _ ^t�•{i.''r� tiE,"y 97: �;.•+-. '`.,�•- ,r.:�]'� ',1'�� .�1 r ,0 ,�=;�. {,}�f.:(:�,:, -1>r.r':I x•:j...t:f.• 1.•rr ' fJ`e;: ,.• o i,r ..._»`<i1i•'�'` il"'r< !?] � !•1 V ••'�' ` •{,.. "� "� 1 4 + ^'- ',�•. �`' <� ir, '!! � Ya!� � i;r �.r,'�,:�:r f� i A r �sr1 x�-�. �;,• f„�f,� S ,+v'�".�!`i/ t,`'�'t"`-"►^r':=;_�..� �r�}t.•-. ` � '... '„�''- t \ -t a y. :�CjY�sl'f,�• �'�" r I I ��j^-.�'��,jje!f't$,1 -.r �f 1 yf"" A.: R"'fi"rJ"XS:,, - .. r T..`Li•.:�!`"���:' r.... '•'�`~„' d N!" i �Ir.aj t ..r _. 0{t�"_�iiE.f .a-i��:..i t r ,j�,:..;� •:�..r• l'I�'ti%y�;s '�..x �,T�t�•��7t r��,4'!^�S i:.itltta':"'�y!"/� t• �j ; •a�...... , tnWwYtarica�+E�:,f/tedtcR ,•t•.�'�,.. 1' `'�`ir::1J^� � ^;.-r,fN^�6 < l; _` `, Y J ],Y. :�•;•� r GL,,:dEs T"% • _ Y4 _.« `S•:':XrY`�R,'"'i,,.'.,"'Tx„r"'f J�. 'r 7' a<ae� '=.:+r.v�l.,,!°, „t�i', `. 'x'� '. •J� ����.W"`. ,�1}'y"�'s,..(.!�'-Yr''. :• �r.�.•y.t r� '{i r '!•' A•a'•ram'is `• ....�..........+; 4 �Li]. k I rtp leiarse•' yR f,)•:••CSS.: .:,':-, f .'i \( ••-•! } a 7C/f�M (O •` �} .0'. Y(,�f:�'•f�..y- o<i)r .i..t'J1 •i' -i .'�:tr�; .r wi� .:{ t Z� R r1U,lYlY V-U ,• •S r , Y t�: 7f s , ►y* '< f•:l�•. .9t:. ✓.r s.� � •".1!�•�•:0 r,t�`dI-'!-�wxS?::in ;s "C:. J r�l fE'J }y t i -F ... !I,.._..,y. -:[ }. :• '•LOb► j !* i• k "!" '.,.�l, "``7-IR ... .2'r's: 'r i.:^, ^r' •."f,....t1� 1 Y"?ssr•�(►r.I....i.7 't4, •.," ''1`•. 'Yf- 1•r.,yy�t♦iy' ,:i' .i-"''-.11tr• :�a..i' •,vr•,-r.,"•''�5:•sav~i "'+•:t:•r,i.K;I•S,�.t[Fsi.{,_. s• j , • :� _E _ Yr"�',w.,+ g [Sf .t "'/�:^_<+W�✓e• IRE, }P ...•�*1 oily t w� ��� Y:,�""`i, f. �'� 'i.( rt�•'� Il s :;r 'f ,yr!:a a1••L•'.�J,• :tt���'y`.E:!,'w,•'.J..w.�:.,' __'-�,: tfn:i.::i'.i ,` r,_ �; �krz MIRE, 0 �''�;'' s �:.�--•�� �i�� a�t�r�; x ���;�1 ''�`I:. �'K., ?„N 7L 4.a `lS;:•`t, �,,,,�rrr1ttt[7���� .e-...,. 1 ':t;`r. '.s1' ,,.+ .r•...-..,� .;, b,=•.l.a.r' :a,,, _ - ' .� .,/C: t „^"'•.....r:• _ r. •r.t •y.�`��� .' 'T' ♦ ,`1 �"'1:,�,» .i i' 4 "?1 f e ♦a 'r .,i' 'f, - T N !fw, -:`._.�"Cw ;r..7.�: r •,r�,.'P'-.r jr.: `.iL� ;Gi' ;;x w r;'i if :r ,:t;ti! y.y .'� I4 'C�Ye J•w :�"-••---:�•. �}KJ'✓„ � ,f: w�, r .lMI.:LII 1''^"al.S. C•• .F.,,h a`�-eL!.,9�; F �JQ t. l_.a ti:. .wE�i• h �'0;�,.� �•� �£.,;'�1�^� f,� lt:'•%..�,�.r'♦• t•I � :��'. "u• ' 'ter r..`•` , �' ry. J, ..�t' •L d `(' f'' rtrey'� w,..Ji, MrY;,45� rr�.'�J: t�.^l�� .,,:f: 'ti+' 1 • ! ..� •, s •�r��,:J 1 't9• { 'ft,%lY�r,.�?:-.�'r _ ,•t �' �� �. .:::L-^'F',r"r l Js,,:F';Y''\yti yr-i1611, � y; i•` ^ft�� �� ''_yy�,�// •�� i.. #• .r r / ,:•sy S"y.:• ,�,.. 1,►,,.. y'4'(;y:,...1�;;>._ ::s..a;�' 'n'ti'.=' i' __i:-.:,[,..�...:t.:",.t'i�D..t'i'f �.rtF=i'Xt,i -�- t�V.a 't�'�3?iFat.',4,E,w :!:S' ,.N :r ;.�" ,7 a -]t�•` �.e. CV,� ir. ;� J' 4! �,!t6` �,f h:,..-�{..•..:..., i ►.1. a•f'� •�' ' G f 1�•,! �- hf:�e„x e:�• � •• 1• r s'4Ar,.:}y:'-•- !; .ti r x i';;�: :ar r_,� ! j _ t .' I:...././;:.G4 ![ ''�{L. :''y• w !�IJin a ,,,,rt•,tr.fr,� *! /' a\:.�r i �•». - l y� � r a•r y� l!� :-{'�rtn4i•�,�,r[ i'1H' rE. ?•eE.�a��J,'L;j/a;,fr�•�if:J-`.:;'ti:"t>.:•s�.1 ;' -T. _....^'��.::Y'"..• .::tuz, a, ',,"'^ ♦ \.s'/" ti ..S.IY'd p1:r'ir �'��-St`rA.`��i,"•'.: 7 t� ��. :tir`.!'�R• :.,..! ����"'''��': 'uI^•:.b, I,' :k"•�:=?i.....4,f?�L "i: 'n �,_S�;ir:�I �%:. � r.fr rAc"ttS.<�'3 . 'lt.,!� \ � ,;t,} -c�.4 :rr�•'<�r• x.�; t�,�'�,+ ����� .,, :x-,~``<� �:f..L•„ ; f,Sft.. J r;i .?',, � , �� s.." ., +s�'•'i!f��.If�"''�' m�,'t'. •"��:'•',SYi:+,i't�,• _.f!6,�'?',{�wlt'f ..!! r ef,'1�'�!'!j:�,j':' m.•:• � s ;,.i�_{�lS�. :7•' t r •fi` v .-l.: : ."E-4 �'.IEe1°,ti:,,.3jl:iy7'=•;.,Z,..:r� -'1� �. /R.... t .>�.� ��L},a Le ,'1,. �,I':.,.t� <� � .+' C'1•fl" w.,._ t �+:?7u+a'>;.-t:,;.i'�fj}•'}J• :i�i`�:��'�" YJ'<li P'- �:-tyy,� 'r'^!' t' •a.z� ♦\:,,, `F ,�n.:-•-'-t.� `♦ '.`E ;f. :� .j- K'•r�-"�'u' r�'Y't;. :tt ,sy ,.;,�• i• ,. '�•'.,y �,}}j: rir�,r: e..�j: a...N•. •.},F'r'•,y.t K...: e•:"�.i..,. ., 1 t1R e•• ;t�r �� ,.•f. ,, .._ai••z;y..:i.i•� •R: a k ,l• :t:.a. .'{4 �.,.��� . - j � rti�,,sK ,a�,s.�� .' ,.._ ,~ t r 1 �.71S. ..,....if,Il G e J[Lf 1t�. �. t afa o0o fm A, :Ta51 :> .k .♦-,Z" Y.�w,'.L �C�. •r/ r; t't .i•,.ys a.►, 1 f ,jj�l '.%i'ct't•,. , /.sEr/'?' '�:'fi.+R' 4•r.gDF ' . �,,..n:.• �„ ..` v z� Kr ^5::,.,r< a;7. i•S" l+',j'.J !1^" wrr"r fct �•::..'r::?•- , ` .;l'=': -•r ....rFf 1. .:w••i, r,: - "^-sT "'•}' ;�..i <.i 7 d'.r.}4 ' ♦- INfW.) fF- _,ter rF`` ;. t..�;:7 x:r^ - :rt.''z! 'r.J•- '„l:'Ai► 1; ..z..t l'.'.ti..-:.�' g :? ri j. r' :! ►: •� ?. vi` i�t`t i a i V,Irr.f"'_ ��Ly-�..•'-•_•;1'I�• "tn�;�S iY'c%''`E r . .n. �, �_ ;; a!1' +ti r1; „r:'�'.,,� � � .,.,\ S r,,:. 1 7. E S. t'i,r•< .'t:r:+•: +t.:7k s�'"•�,:Rh. :f•''`'XL'!. •!:.�+s.< .1•, a t�'.�.�r� '.f'...,.::�:.t. i•-•, %•r'4�J• 7 '1` i_va;: .� „ -._'.i0! yn .�l +1�.� er� �.:. ..,r H '�}~ ! 7Y^..• .r'/,ry ,.7;�i:'"w't,3! �•+:i.. .f.�':::' :r , f •t"fr., .4:t..�jW,.,�•'l '�,,^ 'zr" :r. ..�' ::4�i`ii. �', .,s '."�fj n:t�t•:, .1... .. ...1:.,, 11"t E / ts:`i+ �. .1 ,y ';�: r�: }• 1�, ': ..1.,.,-++'w.r� �-�:a,•,i. .� ,..,.:,ih,'.' .a, -:,.: ..� -1 ,> l !t t .,\ `•a4j:..y. E F; i= `t '� � •��tc��..'� # ,.�: •f:. i[p!�:t :1:c��_.r.yy.. 1_ :� s}Zt� .:;� ,.�' � ,:,., 'ii<rS<,:.f ,.r rk,\ �'• .:�• J!' �' 'd',. �2 •':"t4 .!tra' 'tL J 'f ..9: 1.: :::'sA,rr-•'• ;t:t{:y `t C. :,'< ':I�t'j 1 a.. 1 .,.y_ '��•.r. '� S i :F i'•`[nr_.};•� 'tir'S�al..f. tom, !z„ :fr.E"�- yq� :::r./.. •t .fJ;;b, f t, :t�i•;�[.' $Prwp'x' l,`J•-: r, / -t. .f .a. .�r., � i,f>;.lv?•:� '.'J.:•. t°'�",: i�. �f r�r"1� i t� r t 'r �.• ,it1 :::"-1LM::-' \ F'd.".1..;. _:1... "t c}`Il.rr) � 'fir'-...�r.:,S'.G9, l ,.,`.�{;= ,i :!'.T.:s,. �17.� i3t,�.'+ `••1':r i�'r•::.,E �� !• .i:: .'�_ `,r'i -:t' ['r� ' .. ;..!'?ti .,t�,E yTt,'`,.. :,� •:tl�'3e:.`�".e�;l'!.�. '' tT 'A '1 �,1,� !' - , ..�?�r,��' 'r a,.:'h ..:' ., /..,,/.. �.:::s_. 'si 'i�,i.'•"..U'Y .�t. .4..+. :i:n...�^"�` ... .•�t�, :. it .L....� '114��.-i�1.._.. .. "".1...��....,.,4'�..: ,r.,... ..... e... ... $6'�5•Lr..e_..l� J..,.L- �i-:f r• • "i , n •,,,.w--••ni Y,:r-,w:M 1.•a},a�wNwM••,W 2 HOOOO FEf,IGtUi.i '!] it tlt!�' a„ !t iAt !talrW„tek4 w,�RtaalarGYa�MtEl JI 47'� 'Sil 1W tlUU YEI'rI'mIM'EV.S: S9IMM � Jam,{ ]lP'4Y ly the Geotogical Survey ASSil]CA';t0(J SCALE rza o00 VAO CI opyrlg Map tech,Inc. .r _ . _ - 1-v,, .{ i ^ i' iI I r: 1.• ➢• L. I' �. i , i 4, 1 � V sy �t:i'.4pr;'wl ' .r F: sy i. `; •;r. I s i_ t. .1 ._ ♦♦ _. ,. < I. " II - ." ,,. , I• i ! i' i?:. i .. tt' ACMYK�B 5 1 1 I Ss• I. f-;"I1. �.. :- .. 1 � �'' `.. v`. ....N.....-. ; , I ! (((( -t -,,Jp I...!�........,.•.Y '.t.........y.Y ! ... lit• 1 \\^ t, 1" t L*F/ :%^r 'co _ t x e I . t r �aL. DIL jf c 'i 11 ry '�! t 111 I ..r l„_c.v. '.�t .r..j K. '' .r,�' .j .� ` ,:.•:-:.+!-:,�,•'�',�?f"' _. f,'';• i I f k': d' ♦ I.•{...AOIlYM�W 1 ' ,, t }, k. .., ` 1. 11 '., �l` :# n-itres•`( ! �I - I' I ♦ .l l i''t•r ~i l i .r •�,.♦ •.tf ` 1 1,' i ' it ` 1 j \` t� `f.: C :7 1. ,:-- . I ; ,_ _. r!�v 1 f t f ,L ,,. ` ,..•-1'!1 .•, •'IF I, 1 i K', .111•• 'tt j ., � . .r �`'j( F .. ♦ I' '1 . , .4 .i lF .. a r1 r. r su+ .� I1 i' ; I {: I. % ;, Condon t { '_ i ; / n F� L�`.`l�,r+.,l .,�� - .,. �� I I t�%,; �, y i �.•'I •. 0' ,:*• tEl ,• •f r, _^`i:1':. 1 ;, ," y-1 i }�,ri s,' !.:T,-` 1. \ i ., '.;.r i A-�:o,Y ..... L...,,.-•� ,ten d<v f'.• .. '1i�� fk+.U•• -0 $�. r � ., / :W,.j, 1•1. i wx /• FZ� r i .i.� r. ' `./ i_f l :7 f ... '• �/' f 1` ( I t�_ �/i' '+`.� %Wid4 ,.ti.....'x:s. J `. /:"1 1�� �!tt.,��' / I ti , �•.' t 1 v'•�, t 3 1, % (, u1 1; 1 .� ,: r y t�;# h I , ` _ 1 ,_' S rf I ' :5-, ,t 1.-!^ ."s .•.�ws y aN•' . �:. . ?fit/ ,' i '• I1. `'i. i. ..' 1 .._.f" 'R.,r, i�P/ , .;,•' i 'i•� ... : - 1 1,.�' f{ u 1, 1 ter', 1�. _1-%�r 0. ) I., / _ ..e- .. .✓ I �. '. r• I ry JJwi-.,9'...i•.J I• ;..,1 •I�. I' ti.� 'L. ! 1JPIr .T. 1. _ 1. ,iL• nCMvt4o9N MM1B.._ 1 'C«._ � ~' I �I :J�� Y� � :f i 1 rro z�:•::. f ..r• ..._ 1.... -d�FF�......:!'AC1.lW-07S. ..Aq _. _'./ j�..'10 f.;'f,1'..... :r { ,I. I '1 J :x j r• ..J ' / ' t ti r !.. ,.1. r {•• acuw.l7. , �. :./ I ` , - /:,' ,� ,/q, Br.. Cv. .' I _ .: r v ,, i t 'If.�`''� 1,j �.I�CIA�'�R19 { + - c 1 t�.,-, !u t. .�'•'r `''` : A[tAN1�.17 y?' I f�-.�•!.....r+' ., - �'1�,ri. - t- I S,ajpi.{rt ('!�' %• d'�'R?' 'r. ACMLtI�.r:.r•../' .% :� .ii ...:;;yy.»;\ -.L �;. _ `T.'J P ACYYY•1B ACLWOIS jI /'.1(�.1. ! :i I :-I- — N. „r S. ''.♦•-':, �,. 1 / I ..-AC" J rt 1G n 11 !- j .� r ft' .. I\ N '�,y ,* t'ai;q'C1, L� I..�. _.1' 31 , ) 1/ I I I - I \ r�.'�._ 1 / ACA1 W C25 ,' I `1! i 111{ 11 NN r t 1.%* t'�`:'.ter �� f +% r �w ,' 1 If 0.Ir l ��1' 1 i .',.- •lYlr, ! ,1?. - ?of � ,i.. I -,-, t S i�Ii r` �,�• "`�.'�� MWta 1 sncuwou t Si {Ilt' I 1. ,ti .::. t ,: I •,` t41 .._ ..... '�./'•-' .•�.:. ,•r:.rt„� 3 ,� 1 �.'I Coll' Ir.!!r ' I I; N !A .•�•..`' pr Pl ,:q,..;. ` s I 1: Ni P. I t x I ;1 I r•°'' 1 .. I{_ �f. ±. �,-e�',; .. I1U1�� CIIK A-R '. �. <,' ,r1/- ` { »hlckti''i i I +1'I'110N`y...... L.+1S,A-/ t� it i _.I ',,, 1 {... - r.- 1 F, -. r .-r '-/ it 1 I l I c R>.. .. � � , ;�' I EXPLANATION _ I.__ 11 .. r '- {, �., - 1. r I MONITOR WELL 11 ` '`� .}., .'�` I �.: "_` I ;14�.ry PRIVATE WELL I. c.. I. t s�; { t-` ' .. Irrigation-Recyled 23 Water I r I...._�...I, I J. I I. ... .• ..' ".. '_. i< �� I. I ��Irrigation-Blended Recycled Water ` i 1 I 41 i ,,. I' 333rrr 4 I.� � l < . -__..! I 1 ! t I �. ^ 1 I� A.. _ I�0 3,000 5000 FeM SOUTH TAHOE PUBLIC UTILITY DISTRICT 1.1 RECYCLED WATER MONITORING PROGRAM WELL LOCATIONS W E CARSON VALLEY GROUNDWATER BASIN (6-6) ALPINE COUNTY, CA S (ap O3'h K 01S'U8.U°In.Cr nY1011 AL✓WIS_14X%mal ALPINE COUNTY SOILS Site S2a SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY SOIL QUALITY DATA Ranch: Celio Type: KT 2017 Inches: 06-12 EC TKN NO3 P P205 K K20 Cu Mo SO4 CEC Ca Na Mg Exch Cl Exch P Date' pH mmho Sat% mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg mg.Kg me/1oog mg/L mg/L mg/L SAR Na% mg/L mg/L 02/28/17 7.96 6.33 78.5 3,670 0.8 365 840 1,628 2,000 8 .0.08 475 31.6 278 646 318 6.28 7.26 1,220 11.4 05/31/17 7.93 4.21 64.6 3,860 2.4 422 970 2,585. '3 I00 10 0.05 290 33.1 205 475 155 6.09 7.03 7.7 09/07/17 7.88 6.45 72.7 4,740 10.8 429 -980. 2,598 3;1 W 9 0.10 300 14.3 319 766 216 8.11 9.49 1,720 13.2 11/30/17 7.92 10.50 63.4 4,000 12.8 603 .1;3W 1,066 1,300: 9 0.07 260 43.4 328 931 418 8.03 9.39 2,600 8.5 Maximum 7.96 10.50 78.5 4,740 12.8 603 1,380 2,598 3,100 10 0.10 475 43.4 328 931 418 8.11 9.49 2,600 13.2 Minimum 7.88 4.21 63.4 3,670 0.8 365 840 1,066 1,300 8 0.05 260 14.3 205 475 155 6.09 7.03 1,220 7.7 Average 7.92 6.87 69.8 4,06.8 6.7 455 1,043 1,969 2,375 9 0.08 331 30.6 283 705 277 7.13 8.29 1,847 10.2 #Tests 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 3 4 a Site 2a SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY SOIL QUALITY DATA Ranch: Celio Type: KT From: 1981 Inches: 06-12 To: 2017 EC TKN NO3 P P205 K K20 Cu Mo SO4 CEC Ca Na Mg Exch CI Exch P Year pH mmho Sat% mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg" mg/Kg mg/Kg mg/Kg me/long" mg/L mg/L mg/L SAR Na% mg/L mg/L 1981 7.02 1.78 68.3 2,575 3.3 324 742 17,357 20,828 19 0.6 30 36 1982 6.95 1.38 66.9 3,487 3.7 666 1,525 15,155 18,186 18 0.4 37 28 1983 7.50 1.02 65.7 3,127 1.5 947 2,169 16,286 19,543 23 0.6 36 34 100 224 502 1984 7.97 1.59 62.7 2,585 1.7 664 1,521 14,255 17,106 17 0.3 13 29 92 126 53 2.52 2.4 350 1985 7.94 2.60 56.8 2,559 1.1 801 1,834 16,667 20,000 17 0.3 40 32 150 215 94 3.47 3.7 628 6.0 1986 7.86 3.00 63.7 2,827 1.0 818 1,873 13,183 15,820 17 0.3 104 33 157 276 103 4.10 4.5 658 6.9 1987 7.84 3.62 55.2 2,470 0.7 774 1,772 15,909 19,091 20 0.2 55 32 - 229 315 120 4.04 4.5 910 5.6 1988 7.76 5.90 63.0 2,938 1.0 815 1,866 13,183 15,820 .19 0.2 132 32 323 597 218 6.20 7.3 1,625 7.6 1989 7.81 5.89 56.3 2,551 1.2 722 1,653 14,273 17,127 17 0.1 122 30 _367 575 190 6.04 7.1 1,452 5.7 1990 7.87 5.81 58.3 2,491 1.2 696. 1,594 13,875 16,650 13 0.1 109 31 . 328 566 190 6.08 7.1 1,513 5.1 1991 7.82 5.24 59.8 2,592 1.6 826 1,891 13,417 16,100 12 0.2 106 33 286 553 213 5.72 6.8 569 7.2 1992 7.86 5.33 58.5 2,376 1.8 832 1,905 13,583 16,300 10 0.1 120 25 253 652 152 7.91 9.3 1,440 6.3 1993 7.96 5.60 57.3 2,440 1.6 788 1,805 13,250 15,900 7 0.2 175 28 238 691 171 8.42 10.0 922 10.7 1994 .7.96 5.12 .61.2 2,365 1.7 888 2,034 14,500 17,400. 8 0.1 130 33 210 628 171 7.45 8.7 1,382 5.5 1995 8.00 3.23 53.3 2,217 3.4 851 1,948 13,771 16,444 14 0.7 48 36 164 356 10.0 5.41 6.3 740 5.4 1996 8.06 2.60 56.9 2,097 3.0 852 1,951 8 1.0 38 33 121 303 67 5.42 6.3 415 6.5 1997 8.19 1.85 69.2 2,346 2.4 833 1,908 8 1.0 83 34 69 246 43 5.61 6.5 399 4.3 1998. 8.15 1.29 66.2 2,316 3.3 760 1,740 16 < 1.1 51 29 .57 159 31 4.19 4.6 - 5.9 1999 8.11 1.38 63.5 2,433 8.0 903 2,067 17 1.5 41 33 60 168 28 4.47 4.9 5.0 2000 8.24 1.98 70.6 2,355 2.5 873 2,000 11,823 14,200 22 < 1.0 58 30 67 249 45 5.57 6.3 6.8 2001 8.24 2.13 64.1 2,200 3.0 758 1,735 11,550 13,875 29 1.8 48 32 69 3.15 55 6.90 8.0 455 5.8 2002 8.23 1.76 68.7 2,920 6.2 860 1,967 11,300 13,550 20 2.0 60 31 60 241 39 6.13 7.0 299 6.5 2003 8.25 0.93 61.9 1,965 4.1 883 2,020 13,250 15,875 22 1.0 33 _31 53 121 26 3.37 3.5 177 7.3- 2004' 8.27 1.14 64.4 2,600 25.0 925 2,120 12,426 14,900 20 < 1.0 24 32 51 120 34 3.24 3.3 198 8.3 2005 8.03 1.50 60.7 1,745 2.1 948 2,170 13,050 15,675 23 < 1.0 16 32 69 151 45 3.46 3.6 302 9.1 2006 7.97 2.63 73.7 2,748 2.4 942 2,158 10,655 12,775 25 0.8 111 33 91 240 107 3.96 4.3 .212 12.1 2007 8.06 1.41 67.5 3,035 1.8 929 2,128 6,948 8,325 21 0.1 35 67 157 51 3.52 3.7 263 10.7 2008 7.95 1.78 54.0 2,611 2.8 793 1,815 2,003 2,400 15 0.1 32 77 218 51 4.65 5.2 249 17.7 2009 8.16 3.32 68.9 3,185 4.3 778 1,780 .2,735 3,250 9 0.1 65 30 80 477 88 8.57 9.9 879 11.0 2010 8.11 1.50 65.5 2,928 2.9 765 1,750 2,341 2,775 16 0.1 47 34 70 173 44 3.94 4.2 179 8.1 2011 8.10 1.93 65.2 2,838 3.0 702 1,610 2,800 3,400 17 0.1 102 34 68 300 57 6.51 7.5 311 10.1 2012 7.75 2.22 62.6 3,133 5.2 716 1,638 2,186 2,600 14 0.1 115 34 92 276 50 5.90 6.8 383 15.1 2013 7.87 3.59 68.1 3,098 5.1 699 1,600 2,830 3,400 14 0.2 115 30 178 377 109 5.48 6.2 1,046 9.8 2014 7.95 5.69 67.3 3,260 4.4 635 1,455 2,593 3,100 15 0.2 146 34 246 627 186 7.38 8.6 786 5.9 2015 7.86 8.41 68.7 5,008 7.3 603 1,383 2,515 3,025 15 0.1 264 34 231 1344 414 12.00 13.7 2,329 8.5 2016 8.00 7.09 76.7 5,433 11.3 504 1,153 3,613 4,325 11 0.2 265 38 244 817 294 10.39 11.9 1,925 17.2 2017 7.92 6.87 69.8 4,068 6.7 455 1,043 1,969 2,375 9 0.1 331 31 283 705 277 7.13 8.3 1,847 10.2 Maximum 8.27 8.41 76.7 5,433 25.0 948- 2,170 17,357 20,828 29 2.0 331.25. 38 367 1344 414 12.00 13.7 2,329 17.7 Minimum 6.95 0.93 53.3 1,745 0.7 324 742 1,969. 2,375 7 0.1 13 25 51 120 26 2.52 2.4 177 4.3 Average 7.93 3.25 63.8 2,806 3.9 771 1,765 10,159 12,186 16 0.5 93 32 151 387 115 5.74 6.5 792 8.3 #Tests 37 37 37 37 37 37 37 33 33 37 37 35 37 35 35 34 34 34 32 33 Site: S2a Ranch : Cello pH Salinity 11 10 10 9 8 9 7 8 v, 6 0 a 7 5 6 E 4 3 5A J 2 4 1 3 N M tl7 CO h CO O O N M cf In CO f�00 O O N M v 1n CO P CO M O N M V In CO h O N M In CO h OD 0 0 a-N M v 117 CO 1�GD M O�-N M v M CO n CO O O N M v 1fl CO h M O CA CO lO M CO t70 c0 M M M M M O M O O O O m CO w M M W w w M M M M M M M M M M M O O O O O O O O O O e- N N N N N N N N N N N N N N N N N N M M O M M O M M O M O O O M M O M M O 0 0 0 0 0 0 0 0 0 0 0 M 0 0 0 0 0 0 r �- �"�- �-N N N N N N N N N N N N N N N N N N --�-pH Linear(pH) Salinity Linear(Salinity) Cation Exchange Capacity Sodium Adsorption Ratio 50 20 40 15 aM 30 0 a 10 y 20 5 10 0 r-N M CO In CO IO CO O O N M M N M M M M O n N M In CO CDM—In CO— O N M I In CO n CO O O�N M V lf)CO I-CD O O N M d'In O r-CO O O a-N M V In CO h m O CO m M CO m CO CO O m O.M M M M 0 0 0 0 0 0 0 0 0 0 0 0 0 n-0 C)CD a-a� CO CO M ao CO c0 CO a0 CD M O O O M M O O M O 0 0 0 0 0 0 0 0 0 0 a-r-—a-a- O M M M O M O M M O M O O O O M M M M O 0 N 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 M M M M M M M M O O O M M M M M M O 0 0 0 0 0 0 0 0 0 0 0 0 0 Coco 0 0 � ���-a- � ��a-�- N N N N N N N N N N N N N N N N N N -�—CEC Linear(CEC) --♦—SAR Linear(SAR) Site S3a SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY SOIL QUALITY DATA Ranch: Hall Type: SM B 2017 Inches: 06-12 EC TKN NO3 P P205 K K20 Cu Mo SO4 CEC Ca Na Mg Exch CI Exch P Date pH mmho Sat% mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg mg.Kg me/1Oog mg/L mg/L mg/L SAR Na% mg/L mg/L 02/28/17 6.68 0.365 33.3 1,420 8.1 242 -550 1,064 1,300 8 0.09 31.0 10.4 29.9 18.2 6.02 0.79 < 1.00 15 19.3 05/3.1/17 5.48 0.308 40.1 3,420 3.5 341. 780_ 1,542 11900 10 0.05 14.0 20.8 14.8 25.8 2.86 1.61 1.06 13 39.7 09/07/17 5.52 0.411 34.0 1,730 10.1 306, :700 1,618 11900 8 0.08 13.0 17.5 31.0 16.7 7.68 0.70 < 1.00 6 76.5 .11/30/17 5.48 0.318 32.4 1,170 2.3 539 1_1230 797 1-,000: 8 . 0.09 35.0 21.6 20.0 22.3 5.08 1.15 < 1.00 25 11.5 Maximum 6.68 0.411 40.1 3,420 10.1 539 1,230 1,618 1,900 10 0.09 35.0 21.6 31.0 25.8 7.68 1.61 1.06 25 76.5 Minimum 5.48 0.308 32.4 1,170 2.3 242 550- 797 1,000 8 0.05 13.0 10.4 14.8 16.7 2.86 0.70 < 1.00 6 11.5 Average 5.79 0.351 35.0 1,935 6.0 357 815 1,255 1,525 8 0.08 23.3 17.6 23.9 20.8 5.41 1.06 1.02 14 36.8 #Tests 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 Site S3a SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY SOIL QUALITY DATA Ranch: Hall Type: SMB From: 1981 Inches: 06-12 To: 2017 EC TKN NO3 P P205 K K20 Cu Mo SO4 CEC Ca Na Mg Exch CI Exch P Year pH mmho Sat% mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg. mg/Kg mg/Kg mg/Kg me/100g mg/L mg/L mg/L SAR Na% mg/L mg/L 1981 5.68 1.44 31.4 1,411 0.6 420 962 5,716 -6,859 40 0.7 24 23 1982 5.81 0.96 31.3 1,225 3.0 720 1,649 15,887 19,064 37 0.5 33 19 1983 5.93 0.66 44.4 1,928 0.5 790 1,809 14,210 17,052 29 0.5 59 20 61 1984 5.69 0.58 37.9 1,378 0.7 732- 1,676 16,818 20,182 20 0.4 32 15 42 34 -,3 1.21 0.5 54 1985 5.86 0.80 36.2 1,479 0.6 774 1,772 19,036 22,843 18 0.6 26 18 60 54 20 1.59 1.0 103 10.5 1986 5.64 0.73 41.3 1,685 0.7 705 1,614 17,510 21,012 19 0.4 25 19 51 54 17 1.66 1.5 111 12.7 1987 5.30 0.67 35.7 1,435 0.4 768 1,759 18,182 21,818 19 0.5 27 17 52 56 17 1.65 1.5 103 12.2 1988 5.67 1.51 43.2 1,898 0.5 761 1,743 17,600 21,120 21 0.5 49 18 123 139 32 2.96 3.0 265 15.1 1989 5.51 1.73 38.6 1,605 0.5 695 1,591 18,000 21,600 19 0.3 57 17 112 165 40 3.46 3.7 322 9.1 1990 5.84 1.73 35.7 1,613 0.7 720 1,650 161500 19,800 13 0.3 41. 18 99 172 35 4.00 4.4 331 9.0 1991 5.85 2.08 36.5 1,551 0.6 789 1,807 -18,167 21-,800 13 0.5 46 21 141 182 54 3.39 3.6 428 10.9 1992 6.11 3.47 36.3 1,411 0.9 803 1,838 17,333 20,800 12 0:3 44 20 . 255 264 100 3.70 4.0 388 16.8 1993 5.90 1.61 37.2 1,712 0.8 716 1,640 16,818 20,182 8 0.3 33 18 105 121 40 2.59 2.6 280 12.6 1994 5.92 1.65 36.1 1,153 1.1 = 798 1,826 18,167 21,800 9 0.2 33 19 128 168.- 84 2.72 2.8 521 13.2 1995. 6.10 1.20 33.7 1,439 4.5 782 1,790 16,694 19,889 14 0.7 26 21 80 100 31- 2.54 2.5 168 7.6 1996 6.37 0.76 35.8 1,427 2.9 826 1,892 9 1.0 17 20 47 74 17 2.40 2.2 124 9.2 1997 5.97 0.56 35.7 1,188 1.4 738 1,688 10 1.0 15 17 33 49 12 1.96 1.8 68 15.4 1998 6.10 0.45 35.9 .1,292 1.6 1,010 2,310 18 < 1.2 13 17 32 34 11 1.45 1.3 15.3 1999 5.99 0.36- 36.4 1,403 2.8 1,078 2,470 24 < 1.0 6 18 23 28 6 1.45 1.3 17.5 2000 6.33 0.45 36.2 1,278 1.3 1,085 2,485 16,675 20,000 31 1.3 8 18 26. 46 9 2.00 1.6 16.5 2001 6.19 0.30 35.2 1,167 1.2 860 1,970 16,600 19,925 33. 2.8 4 18 27 33 9 1.43 < 1.0 25 16.3 2002 6.07 0.44 33.8 1,362 3.6 "925 2,115 16,450 19,775 30 2.3 9 18 29 30 10 1.23 < 1.0 52 18.7 2003 6.46 0.26 35.7 1,400 1.2 1,023 2,343 16,667 20,000 59 1.0 6 20 22 23 5 1.14 1.0 16 11.4 2004 6.17 0.37 33.1 1,200 1.7 1,040 2,380 17,275 20,725 31 1.3 9 20 24 30 8 1.38 1.0 31 15.1 2005 5.69 0.34 36.5 1,300 1.0 1,095 2,508 15,850 19,025 30 1.3 16 20 26 24 8 1.03 < 1.0 23 21.4 2006 5.75 0.33 33.7 .886 2.2 1,008 2,307 12,893 15,467 35 0.7 16 18 27 21 8 0.88 < 1.0 25 13.2 2007 5.58 0.38 41.0 1,898 2.1 930 2,130 5,854 7,025 25 0.1 22 26 33 8 1.45 < 1.1 35 14.5 2008 5.62 0.29 34.9 1,322- 1.5 730 1,673 1,174 1,400 17 0.1 18 22 21 7 1.01 < 1.0 23 12.5 2009 5.90 0.22 33.1 1,016 1:5 766 1,753 1,504 -1,800 11 0.1 10 18 14 17 5 0.71 < 1.0 16 6.3 2010 5.67 0.26 40.9 1,701 2.2 704 1,613 1,438- 1,700 17 0.1 26 21 16 20 6 1:06 < 1.0 27 8.5 2011 5.57 0.29 38.5 1,730 1.3 741 1,695 1,782 2,150 17 0.1 35 20 20 18 8 0.90 < 1.0 30 40.4 2012 6.10 0.33 34.4 1,557 0.8 654 1,500 1,040 1,267 15 0.2 42 19 43 14 8 0.65 < 1.0 15 10.3 2013 5.74 026 34.1 1,132 0.4 607 1,390 1,353 1,625 16 0.1 22 18 22 19 5 0.92 < 1.0 16 5.7 2014 5.97 0.38 32.4 997 0.5 691 1,585 1,508 1,825 16 0.2 21 17 23 36 7 1.73 < 1.4 17 5.6 2015 5.90 0.44 34.5 1,691 0.7 562 1,285 1,698 2,050 15 0.1 19 18 21 36 15 1.48 < 1.1 32 27.6 2016 5.69 0.31 34.1 1,878 3.5 556 1,275 1,812 2,175 15 0.2 10 18 15 33 4 1.96 1.7 28 32.2 2017 5.79 0.35 35.0 1,935. -6.0 357 815 1,255 1,525 8 0.1 23 18 24 21 5 1.06 1.0 14 36.8 Maximum 6.46 3.47 44.4 1,935 6.0 1,095 2,508 19,036 22,843 59 2.8 59 23 255 264 100 4.00 4.4 521 40.4 Minimum 5.30 0.22 31.3 886 0.4: 357 815 1,040 1,267. 8 0.1 4 15 14 14 3 0.65 0.5 14 5.6 Average 5.88 0.78 36.1 1,451 1.6 783 1,792 11,499 13,796 21 0.6 25 19 53 64 19 1.79 1.7 119 15.2 #Tests 37 37 37 37 37 37 37 33 33 37 37 35 37 35 34 34 34 34 31 33 Site: S3a Ranch : Hall, pH Salinity 11 10 10 T 9 8 9 7 8 y 6 0 a 7 5 6 .4 3 5 2 4 1 3 N M lA O n CO CA O NM M•v CO CO 00 �N M�to CO r-CO M O�N M Nr O CO 0 �N M v to M M M O N M v w CO I­M O CD�N M v M M I.-W M O�N M v M CO t` m O CO CC)CO 00 CC)O CID O O M.0)O O O O MOO O O O O O O O O O O ------ CO GO GO w GO CO CO m M M m M M O O M M M O-CD O O O CD CIO O O— a-� - M M M O)O)O M M M M M CA M M O M 0 0 M 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 M M O M O O O O M O M M M M M M M M M O O CD C.O O CD O O O O O O O O O O —a-c-.---.--——— —————.-c-.-N N N N N N N N N N N N N N N N N N pH Linear(pH) —+—Salinity Linear(Salinity) Cation Exchange Capacity Sodium Adsorption Ratio 50 20 40 15 0 30 o Q 10 E20 5 10 ON M to CO C�CC)O)O N M.4lfl CO I�CO CA O—N M"e to CO�CO M O—N M�In CO t- 0 —N M[t M C4 1\GO M O _N M *Cn Cfl^CO M O_N M ct M CO C­00 CA O N M M CO h CO CO CO GO CO CO CO CO CO O)M M M M M M M O M O O O O O O O O O O— a- r- N N N N N N N N N N N N N N N N N N --- --.- -- N N N N N N N N N N N N N N N N N N-- - - - --+—CEC Linear(CEC) --+—SAR Linear(SAR) Site S4a SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY SOIL QUALITY DATA Ranch: Gansberg Type: DI 2017 Inches: 06-12 EC TKN NO3 P P205 K K20 Cu Mo SO4 CEC Ca Na Mg Exch Cl Exch P Date pH mmho Sat% mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg mg.Kg me/100g mg/L mg/L mg/L SAR Na% mg/L mg/L 02/28/17 6.48 0.478 40:8 2,350 10.3 181; 41.0 4,224 50.00 13 0.07 33.0 16.1 36.6 34.6 7.8 1.35 < 1.00 12 12.4 05/31/17 6.63 0.543 38.1 2,140 7.2 171 390: 6,110 7,300- 20 0.06 .14.0 21.1 49.0 65.2 11.6 2.17 1.86 12 16.0 09/07/17 7.62 0.962 41.2 2,240 14.5 242. 550 3,917 -4;700 16 0.05 17.0 21.8. 61.3 51.4 14.1 1.54 < 1.00 33 10.9 11/30/17 7.00 0.712 38.1 2,350 12.6 493.:.; 1;1-30 2,454 2,900 14 0.09 32.0 22.9 40.0 115.0 6.4 4.45 4.94 34 6.4 Maximum 7.62 0.962 41.2 2,350 14.5 493 1,130 6,110 7,300 20 0.09 33.0 22.9 61.3 115.0 14.1 4.45 4.94 34 16.0 Minimum 6.48 0.478 38.1 2,140 7.2 171 390 2,454 2,900 13 0.05 14.0 16.1 36.6 34.6 6.4 1.35 1.00 12 6.4 Average 6.93 0.674 39.6 2,270 11.2 272 620 4,176 5,000 15. 0.07 24.0 20.5 46.7 66.6 10.0 2.38 2.20 23 11.4 #Tests 4 4 4 4 4 4 4 4 . 4 4 4 4 4 4 4 4 4 4 4 4 Site S4a SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY SOIL QUALITY DATA Ranch: Gansberg Type: DI From: 1981 Inches: 06_-12 To: 2017 EC TKN NO3 P P205 K K20 Cu Mo SO4 CEC Ca Na Mg Exch Cl Exch P Year pH mmho Sat% mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg me/100g mg/L mg/L mg/L SAR Na% mg/L mg/L 1981 5.80 0.92 47.0 1,533 1.2 206 472 20,757 24,908 28 1.4 17 14 1982 5.92 0.76 45.3 1,938 5.6 473 1,083 20,766 24,919 25 0.8 24 14 1983 6.37 0.36 44.3 1,907 1.5 440 1,00.8 19,075 22,890 28 0.5 22 16 39 51 89 1984 6.19 0.39 37.6 1,392 1.3 349, 799 23,191 27,829 29 0.4 10 17 34 23 8 1.02 0.4 36 1985 6.18 0.41 37.7 1,710 0.8 455 1,042 231075 27,690 27 0.3 9 19 33 34 7 1.39 0.8 52 6.4 1986 6.08 0.52 39.4 1,625 1'.0 436 998 20,800 24,960 26 0.3 11 18 -55 52 9 1.98 1.9 125 6.5 1987 6.23' 1.00 38.4 1,837 0.6 354 811 24,455 29,346 29 0.3 14 17 91 68 20 1.78 1.5 262 10.6 1988 6.18 1.44 41.9 2,051 0.5 399 914 22,500 27,000 30 0.4 20 18 115 104 25 2.35 2.2 317 9.9 1989 6.35 3.26 39.2 1,920 0.7 311 712 -23,455 28,145 28 0.2 34 17 219 205 48 3.22 3.3 699 11.1 1990 6.69 1.29 37.5 1,742 1.2 392 899 19,125. 22,950 21 0.2 20- 17 99 107 23. 2:48 2-.5 389 14.6 1991 6.57 0.97 38.1- 1,860 2.4 381 872 21,667 26,000 20 0.3 12 20 65 82 15 2.38 2.2 171 11.4 1992 6.55 0.98 37.8 1,765. 1.5 419 960 21,917 26,300 20 0.3 12 19 72 78 15 2.10 1.8 183 12.3 1993 6.47 0.68 35.8 1,670 2.9 392 897 23,417 28,100 14 0.2 9 19 48 49 15 1.69 1.4 66 9.9 1994 6.53 0.67 35.8 1,381 2.4 423 969 22,500 27,000 :14 0.1 10 18 46 65 10 2.25 2.0 214 9.7 1995 6.44 1.15 33.5 1,330 8.0 445 1,020 22,194 26,667 21 0.5 9 13 74 72 17 1.94 1.8 148 6.4 1996 6.82 1.13 36.6 1,594 7.4 470 1,078 14 1.0 11 18 75 91 17 2.39 2.4 82 14.6 1997 6.51 0.51 37.1 1,434 5.1 398 913 16 1.0 4 17 36 47 8 1.84 1.7 40 11.0 1998 6.58 0.81 35.7 1,235 .5.0 620 1,420 28 1.2 6 17 45 72 10 2.61 2.4 12.0 1999 6.73 0.97 38.5 1,650 6.9 570 1,305 37 1.8 7 19 66 82 15 2.47 2.3 13.4 2000 6.94 1.63 39.0 1,725 6.6 568 1,300 22,800 27,350 46- < 1.0 16 19 77 136 21 3.55 3.7 19.0 2001 6.83 1.11 37.3 1,585 5.3 515 1,177 22,700 27,225 53 2.0 8 21 86 102 20 2.69 2.7 152 16.7 2002 6.49 0.46 37.3 1,753 3.8 555 1,272 17,300 20,750 40 1.8 3 19 38 47 9 1.85 1.7 52 19.4 2003 6.82 0.55 36.6 1,515 3.2 538 1,230 22;125 26,575 69 1.5 4 19 34 69 7 2.78 2004 6.33 1.09 33.6 1,428 3.8 595 1,363 23,775 28,525 44 1.0 7- 19 24 65 16 2.58 2.4 80 11.8 2005 6.49 0.54 36.8 1,550 3.2 643 1,473 22,050 26,450 42 1.0 7 21 32 54 6 2.30 2.1 61 10.3 2006 6.17 0.43 41.7 1,711 8.8 639 1,463 18,460 22,150 42 1.0 6 19 30 41 6 1.88 1.5 29 13.9 2007 6.23 0.46 42.0 2,195 1.2 482 1,105 9,518 11,400 31 0.1 22 35 56 7 2.29 2.0 50 9.4 2008 6.34 0.51 34.4 1,270 2.1 335 765 5,049 6,050 23 0.1 18 31 65 6 2.75 2.6 60 6.5 2009 6.54 0.65 38.3 2,058 6.2 457 1,048 6,487 7,800 15 0.1 10 20 30 85 8 3.54 3.7 69 13.3 2010 6.54 0.63 38.8 2,000 5.1 366 835 5,847 7,025 25 0.1 19 20 30 57 6 2.44 2.4 54 9.1 2011 6.44 0.55 38.6 1,800 6.8 507 1,160 6,973 8,333 27 0.1 55 20 31 70 7 2.94 2.9 35 5.8 2012 6.85 1.16 38.3 2,023 5.8 415 948 5,630 6,750 23 0.2 41 19 57 141 14 4.47 5.0 195 6.5 2013 6.54 0.68 40.4 1,920 7.4 278 638 6,827 8,175 23 0.2 22 16 43 80 8 2.91 2.9 46 6.4 2014 6.46 0.60 37.8 1,835 7.9 348 798 5,579 6,700 24 0.2 19 17 38 72 8 2.89 2.8 28 8.3 2015 6.14 0.94 40.8 2,793 9.8 352 . 805 5,266 6,325 25 0.1 23 20 42 80 17 2.60 2.4 84 13.7 2016 6.68 1.36 43.0 3,410 11.1 288 658 6,676 8,000 20 0.1 23 22 68' 138 19 3.56 3.7 182 19.0 2017 6.93 0.67 39.6 2,270 11.2 272 620 4,176 5,000 15 0.1 24 20 47 67 10 2.38 2.2 23 11.4 Maximum 6.94 3.26 47.0 3,410 11.2 643 1,473 24,455 29,346. 69 2.0 54.667 22 219 205 48 4.47 5.0 699 19.4 Minimum 5.80 0.36 33.5 1,235 0.5 206 472 4,176 5,000 14 0.1 3 13 24 23 6 1.02 0.4 23 5.8 Average 6.46 0.87 38.7 1,795 4.5 435 995 16,549 19,857 28 0.6 16 18 57 77 13 2.48 2.3 131 11.3 #Tests 87 37 37 37 37 37 37 33 33 37 37 35 37 35 35 34 34 33 31 32 Site: S4a Ranch : Gansberg, pH Salinity 11 10 10 9 8 9 7 8 6 N 2 7 - - - � 5 6 4 3 5 _ 2 4 1 3 N M v to CO r-Co O O N M v to CO ti Co O O N M tt tD CD n Co'M O N CO It tD CO h 0 N M v to CO I--CO O O N M Q,to CO 1-Co O CDN CO tD CO r-CO O O N M tD t0 O O M M M m M O CO m m m m m m m m m m O O O O O O O O O O -- CO CO CO CO CO CO CO CO CO m m m.m m Q)m m m m O O O O O m m m m m m m m m m m m m m m m m m m CD 0 0 CD 0 0 0 0 0 C)0 0 0 0 0 0 0 0 CD CD O M m m m m M M M m M m M m m m m m m m 0 0 CD 0 0 0 0 CD 0 0 0 0 0 0 0 0 0 0 .- --—.---—————————N N N N N N N N N N N N N N N N N N ———————a--—a-—————————N N N N N N N N N N N N N N N N N N —�pH Linear(pH) Salinity Linear(Salinity) Cation Exchange Capacity Sodium Adsorption Ratio 50 20- 40 15 tM 30 0 a 10 Cr 20 5 10 0 N Co.,;, tD CO�CO M O_N Mt M CO I-M m O�N M ct N M h w m O�N M a M M n 0 N M tt w to I`CO m O—N M et tD CO h CO m O—N M *to CO r-O m O r-N M e tD CO r- M M M m CO O M w CO m m m m m m m m M m O O O O O O O O O O a------ Cp w m w M w O m CO m m m O m m m M m m O O O O O O O O O O—e- m m m m m m m m m m m m m m m m m m m 0 0 0 O O O O O O O O O O O O O O'O m m m m m m m m m m m m m m m m m m m O O O O O O O O O O O O O O O O O O ------r—.---a---•-r-r-——N N N N N N N N N N N N N N N N N N --�—CEC Linear(CEC) SAR Linear(SAR) Site S5a - SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY SOIL QUALITY DATA Ranch: Gansberg Type: H RB 2017__ - Inches: 06-12 EC TKN NO3 P P205 K K20 Cu Mo SO4 CEC Ca Na Mg Exch Cl Exch P Date pH mmho Sat% mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg mg.Kg me/loog mg/L mg/L mg/L SAR Na% mg/L mg/L 02/28/17 6.03 0.394 32.3 1,850 12.5 489 ..1.,120' 2,521 _ 3,000 14 0.09 29.0 11.2 33.6 26.6 6.47 1.10 < 1.00 15 13.2 05/31/17 6.03 0.396 36.0 1,810 6.2 368 :840 3,068. 31700. 20 0.06 13.0 .18.1 31.5 36.7 5.70 1.58 1.02 9 7.4 09/07/17 5.80 0.413 39.2 1,900 12.4 372 850 2,457 2,900' 14 0.05 12.0 18.4 36.7 31.8 6.59 1.27 < 1.00 14 7.7 11/30/17 5.61 0.440 35.4 1,800 9.2 .996 2,280 1,067' -1,300 13 0.07 28.0 22.8 32.2 42.5 5.23 1.83 1.37 28 7.0 Maximum 6.03 0.440 39.2 1,900 1.2.5 996 2,280 3,068 3,700 20 0.09 29.0 22.8 36.7 42.5 6.59 1.83 1.37 28 13.2 Minimum 5.61 0.394 32.3 1,800- 6.2 368 840 1,067 1,300 13 0.05 12.0 11.2 31.5 26.6 5.23 1.10 1.00 9 7.0 Average 5.87 0.411 35.7 1,840 10.1 556 1,273 2,278 2,725 15 0.1 20.5 17.6 33.5 34.4 6.00 1.45 1.10 16 8.8 #Tests 4 4 4 4 4 4 4 4 4 4 4 4 . 4 4 4 4 4 4 4 4 Site "S5a SOUTH TAHOE PUBLIC UTILITY..DISTRICT ALPINE COUNTY SOIL QUALITY DATA Ranch: Gansberg Type: HRB From: 1981 Inches: 06-12 To: 2017 EC TKN NO3 P P205 K K20 Cu Mo SO4 CEC Ca Na Mg Exch Cl Exch P Year pH mmho Sat% mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg me/100g mg/L mg/L mg/L SAR Na% mg/L mg/L 1981 5.80 1.08 31.2 997 1-A 233 534 19,729 23,675 21 10.9 19 12 1982 6.05 0.60 29.5 1,011 2.4 455 1,042 20,944 25,133 21 0.7 17 10 1983 6.14 0.18 -29.5 982 0.9 462 1,058 18,362 22,034 22 0.6 9 10 24 .33 42 1984 6.12 0.23 29.6 1,019 0.8 462 1,058 21,827 26,192 .26 0.7 5 11 18 20 3 1.15 0.5- 27 1985 6.27 0.35 28.1 1,031 0.9 501 1,147 22,575 27,090 21 0.6 5 11 24 39 4 2.05 1.7 42 5.8 1986 6.12 0.33 29.5 1,048 0.6 440 1,008 21,100 25,320 20 0.5 7 11 27 33 3 1.68 1.6 35 6.2 1987 6.22 0.63 29.6 1,037 0.5 470 1,076 24,727 29,672 21 0.6 9 13 30 58 4 2.56 2.5 74 6.5 1088 6.16 0.65 29.4 1,137 0.8 475 1,088 21,667 26-000 24 0.6 13 12 31 93 5 4.34 4.9 74 7.6 1989 6.02 0.79 28.9 1,128 1.1 398 912 21,727 26,073 19 0.4 11 11 47 90 7 3.32 3.5 92 7.6 1990 6.26 0.56 28.0 1,140 1.2 467 1,068 21,500 25,800 14 0.4 8 10 27 77 4 '-3.71 4.0 74. 6.7 1991 6.21 0.44 29.8 1,143 2.9 467 1,070 22,083 26,500 15 0.7 6 12 21 68 4 3.62 3.9 16 11.8 . 1992 6.32 0.41 29.1 1,220 3.6 556 1,273 20,917 25,100 16 0.7 5 14 19 57 4 3.17 3.4 17 9.6 1993 6.08 0.37 29.2 1,146 3.2 510 1,168 20,250 24,300 10 0.4 6 14 19 45 3' 2.57 2.5 37 9.9 1994: 6.08 0.42 28.8 .917 4.9 .570 1,305 23,083 27,700 8 0.3 5 12 25 .47 4 231 2.1 41 7.8 1995 6.18 0.35 28.2 951 5.2 585 1,341 20,644 24,778 16 1.5 4 13 16 42 4 2.58 2.5 32 7.7 1996 6.20 0.35 29.7 996 6.2 572 1,310 8 1.0 1 13 26 37 4 1.90 1.7 21 4.5 1997 6.18 0.28 32.9 1,006 5.2 513 1,175 11 1.0 1 13 20 28 4 1.48 1.1 16 6.7 1998 6.23 0.51 32.9 1,158 9.7 850 1,950 20 1.3 4 11 42 34 8 1.37 1.1 15.2 1999 6.20 0.37 30.6 1,047 6.6 813 1,860 28 1.8 2 12 40 28 6 1.10 < 1.0 16.3 2000 6.12 0.28 31.8 1,135 6.0 810 1,855 18,825 22,575 33 1.0 3 15 19 28 4 1.54 1.1. 10.5 2001 6.00 0.47 32.2 1,015 8.5 708 1,620 20,675 24,825 36 1.5 2 15 31 48 6 2.14 1.8 35 9.7 2002 6.26 0.29 30.7 1,114 5.0 705 1,615 19,775 23,750 31 2.3 2 15 16 38 3 2.37 2.2 -20 9.6 2003 6.34 0.28 32.2 1,200 4.0 740 1,693 19,663 23,625 30 2.0 3 14 17 35 3 2.10 1.8 27 7.2 2004 6.14 0.27 32.0 1.,163 3.8 930 2,130 20,850 25,025 37 1.5 5 17 12, 37 2 ,2.51 2.3 19 7.6 2005 6.27 0.23 33.3 1,093 2.5 895 2,050 18,675 22,400 35 2.0 4 16 12 32 2 2.28 2.0 13 6.3 2006 6.16 0.24 35.1 1,095 3.1 818 1,875 16,070 19,300 37 1.0 8 14 16 29. 3 1.79 1.3 10 8.6 2007 5.98 0.30 33.7 1,200 1.7 557 1,273 7,886 9,450 24 0.1 15 18 34 3 1.88 1.6 27 6.6 2008 6.06 0.38 31.9 1,052 6.1 434. 993 2,975 3,550 18 0.1 14 22 51 3 2.72 2.6 25 7.3 2009 6.04 0.38 32.6 1,228 6.2 588 1,345 2,816 3,375 12 0.2 9 16 19 55 4 3.09 3.1 31 7.7 2010 6.09 0.36 33.3 1,400 6.5 500 1,145 2,953 3,525 19 0.1 16 15 23 46, 5 2.33 2.1 19 5.0 2011 6.03 0.27 35.6 1,340 6.2 595 1,363. 3,733 4,475 21 0.1 32 15 18 34 4 1.91 1.5 10 7.5 2012 6.01 0.34 35.6 1,618 5.9 446 1,020 2,615 3,175 17 0.1 29 15 23 38 5 1.94 1.6 21 6.5 2013 5.80 0.42 36.3 1,488 5.6 598 1,370 3,479 4,150 17 0.1 26 15 33 39 6 1.68 1.3 25 8.3 2014 5.98 0.3.3 34.1 1,260 5.5 489 1,120 2,887 3,475 20 0.3 15 14 20 42 4 2.25 2.0 9 7.4 2015 5.70 0.56 35.3 1,720 6.4 449 1,028 3,231 3,875 20 0.1 16 16 39 59 8 2.38 2.1 68 5.2 2016 6.04 0.40 37.0 1,880 8.9 439 1,005 3,704 4,450 17 0.2 10 17 21 47 5 2.51 2.3 31 10.1 2017 5.87 0.41 35.7 1,840 10.1 556 1,273 2,278 2,725 15 0.1 21 18 34 34 6 1.45 1.1 16 8.8 Maximum 6.34 1.08 37.0 1,880 10.1 930 2,130 24,727 29,672 37 10.9 32 18 47 93 8 4.34 4.9 92 16.3 Minimum 5.70 0.18 28.0 917 0.5. 233 534 2,278 2,725 8 _ 0.1 1 10 12 20 2 1.10 0.5 9 4.5 Average 6.10 0.41 31.7 1,188 43 569 1,303 14,976 17,972 21 1.0 10 14 24 44 4 2.29 2:1 33 8.2 #Tests 37 37 -37 37 37 37 37 33 33 37 37 35 37 35 35 34 34 34 32 33 Site: S5a Ranch : Gansberg pH Salinity 11 10 10 9 8 9 7 8 6 a 7 5 6 4 3 5 2 4 1 3 N M LO CO t`CO M O N M v to CO M O N M V to CO 00 M O N M tt O CO h 0 N M v UI CO CO M O N CM t to. h OD O O N M v CO n CO M O N M tt CO CO 00 CO CO Coco 000003 M M M M M MMM MMOOOOOO 00 O O——c---c- a-- M M M M M M M M M M M M M M M M M M M O O O O O O O O O O O O O O O O O O M M M M M M M M M M M M M M M M M M M O O O O O O O O O O O O O O O O O O —r-————————•-————————N N N N N N N N N N N N N N N N N N —�pH Linear(pH) Salinity Linear(Salinity) Cation Exchange Capacity Sodium Adsorption Ratio 50 20- 40 15 30 0 o Q 10 20 5 10 0 N M a Cn O r-CO M O N CM CA CO r-CID M O N MI-t M M t`M M O N M v In M t- 0 N M V to CO t`M M CD M It M CO —M M O e-N M lA O OD M O N M In O t` . CO w O M CO M O w WMMMMM M M M M M 0 0 0 0 O 0 0 0 0 0 — — CO Go M.m M O M CO M M M M M M M M M M 0 0 0 0 0 0 0 0 0 0 �-— M M MM M M M M M M M M M M M M M M M O O O O O O O O O O O O O O O O O O M M M MMMMOMMMMOMMM M M M O O O O O O O CD O O O O O O O O O O �- r-————————————c-—s---—N N N N N N N N N N N N N N N N N N --�-CEC Linear(CEC). SAR Linear(SAR) . Site S6a SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY SOIL QUALITY DATA Ranch: Neddenriep Type: DWB 2017 Inches: 06-12 EC TKN NO3 P P205 K K20 Cu Mo SO4 CEC Ca Na Mg Exch CI Exch P Date pH mmho Sat% mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg mg.Kg me/long mg/L mg/L mg/L SAR Na% mg/L mg/L 02/28/17 6.81 0.674 44.3 2,250 24.6 183 420 2;663 3,200 14 0.09 28.0 14.9 -84..4 15.5 11.80 0.42 < 1.00 7 15.6 05/31/17 7.61 0.458 42.1 2,460 11.7 265 610 3,523 4,200 21 0.06 15.0 '20.1 56.0 23.1 7.39 0.77 < 1.00 12 8.8 09/07/17 7.16 0.68.6 41.5 1,790 11.1 374 : 860 . 2,718 3,300 16 0.05 15.0 18.4 58.2 54.7 7.44 1.79 1.32 83 9.0 11/30/17 6.02 0.642 42.7 2,130 15.2 1,053 2,410 1,190, 1,400 14 0.09 19.0 24.8_ 37.2 .69.4 6.42 2.76 2.67 55 32.0 Maximum 7.61 '0.686 44.3 2,460 24.6 1,053 2,410 3,523 4,200 21 0.09 28.0 24.8 84.4 69.4 .11.80 2.76 2.67 83 32.0 Minimum 6.02 0.458 41.5 1,790 11.1 183 420 1,190 1,400 14 0.05 15.0 14.9 37.2 15.5 6.42 0.42 1.00 7 8.8 Average 6.90 0.615 .42.7 2,158 15.7 469 1,075 2,524 3,025 16 0.07 19.3 19.6 59.0 40.7 8.26 1.44 1.50 39 16.4 #Tests 4 4 4 4 4 4 4 4 4 4 4 4 4 4 , 4 4 4 4 4 4 a Site S6a SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY SOIL QUALITY DATA Ranch: Neddenriep Type: DW13 From: 1981 Inches: 06--12 To: 2017 EC TKN NO3 P P205 K K20 Cu Mo SO4 CEC Ca Na Mg Exch . CI Exch P Year pH mmho Sat% mg/Kg mg/Kg mg/Kg mg/Kg. mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg me/100g mg/L mg/L mg/L SAR Na% mg/L' mg/L 1981 4.96 1.55 29.3 1,509 0.9 500 1,145 18,357 22,028 28 0.5 17 15 1982 5.60 1.27 56.3 2,145 3.2 672 1,539 17,111 20,533 30 0.2 42 15 1983 6.07 0.69 45.1 1,786 0.9 702 1,608 17,395 20,874 28 , 0.2 32 15 30 101 123.. 1984 5.94 . 0.30 43.6 1,797 0.7 701 1,605 19,055 22,866 28 0.4 15 17 10 43 2 3.30 3.5 35 1985 6.04 0.33 44.0 2,019 0.8 754 1,727 21,633 25,960 28 0.2 10 17 12 51 3 3.66 4.0 43 27.4 1986 6.08 0.31 42.7 1,780 1.2 611 1,399 18,908 22,690 28 0.3 . 10 15 16 43 2 3.27 3.6 38 33.8 1987 6.13 0.59 41.6 1,815 0.5 732 1,676 20,000 24,000 32 0.3 15 15 26 84 5 4.16 4.6 1'12 37.7 1988 6.18 1.22 413 1,787 0.6 . 748 1,713 19,000 22,800 29 0.3 24 16 48 173 13 6.16 7.2 256 28.8 1989 6.12 0.83 39.5 1,672 0.6 614 1,405 20,727 24,873 29 0.2 17 14 28 123 6 5.61 6.5 155 23.3 1990 6.27 0.49 :.38.8 1,622 0.9 664 1,521 16,625 19,950 23 0.2 12 14 28 95 5 4.73 5.4 69 26.6 1991 5.97 0.69 37.9 1,534. -1.6 680 1,557 19,833 23,800 22 0.2 12 17 23 111 5 5.46 6.3 132 56.4 1992 6.25 .0.80 36.9 1,443 1.4 663 1,519 19,833 23,800- 22 0.2 26 15 26 113 6 5.62 6.6 348, 29.3 1993 6.54 0.60 - 36.4 1,369 2.3 603 1,382 19,833 23,800 17 0.2 10 18 19 100 5 5.49 6.4 90 37.2 1994 6.11 0.89 39.2 1,360 4.0 712 1,630 .20,333 24,400 15 0:2 11 14 32 134 7 6.02 7.0 292 44.0 1995 6.01 0.78 36.4 1,322 9.2 684 13567 20,126 24,111 24 0.5 11 14 36 99 12 4.65 5.2 91 27.8 1996 6.22 0.61 37.6 1,299 8:4 687 1,573 14 1.0 4 16 30 79 6 3.92 4.3 39 31.1 1997 6.03 .0.30 42.5 1,157 2.6 556 1,273 21 1.0 7 14 12 40 2 3.26 3.5 27 36.9 1998 5.99 0.27 41.7 1,342 3.2 620 1,420 38 1.2 8 11 10 35 2 3.10 3.2 32.8 1999 6.38 0.31 42.7 1,490 3.1 740 1,697 34 1.5 4 16 15 39 3 2.57 2.4 39.4 2000 6.04 0.26: 44.1 1,416 5.3 723 1,655 19,550 23,475 44 < 1.0 8 18 16 27 6 1.69 1.4 37.0 2001 6.38 0.42 42.1 1,358 3.4 690 1,582 17,125 20,550 42 2.3 4 17 17 60 4 3.46 3.6 65 36.3 2002 6.58 0.50 44.2 1,586 3.1 803 1,837 18,975 22,775 37 1.5 - 4 19 20 76 4 4.01 4.3 63 40.8 2003 6.47 0.36 45.0 1,553 1.9 858 1,965 19,055 22,850 35 1.0 9 18 17 47 3 3.07 3.1 42 35.0 2004 6.27 0.42- 43.3 1,493 5.2 858 -1,965 18,650 22,375 43 1.3 7 17 15 59 3 3.67 8.9 55 25A- 2005 6.29 0.43 41.3 1,525 3.8 908 2,080 18,950 22,725 42 1.0 9 17 26 44 4 2.35 2.1 56 21.2 2006 5.96 0.46 43.9 1,380 4.2 857 1,963 15,443 18,525 44 0.9 13 18 15 78 3 5.21 5.9 56 38.4 2007 6.48 0.46 44.8 1,760 2.3 693 1,585 8,630 10,350 35 - 0.1 19 19 81 3 4.66 5.2 57 17.3 2008 6.46 0.47 41.2 1,347 3.7 698 1,598 3,592 4,300 24 0.1 18 18 83 3 4.92 5.5 46 26.2 2009 6.39 0.54 44.6 1,885 8.2 703 1,610 3,223 3,875 14 0.1 11 19 15 90 3 5.59 6.4 56 23.2 2010 6.24 0.64 44.8 2,113 12.8 729 1,668 3,466. 4,150 25 0.1 28 20 26 88 5 4.44 4.9 64 26.2 2011 6.12 0.50 43.0 1;660. 13.3 554 1,268 4,913 5,875 29 0.1 44 18 28 57 6 2.85 2.9 24 25.0 2012 6.38 0.92 44.2 1,983 12.0. 690 1,580 3,092 3,725 24 0.2 45 19 48 107 11 4.21 4.6 157 19.8 2013 6.26 0.56 46.0 1,838 8.9 584 1,338 3,888 4,675 23 0.3 23 18 27 77 4 3.68 3.9 60 19.3 2014 6.44 0.55 44.5 1,998 7.7 615 1,408 4,473 5,375 25 0.3 17 17 29 74 6 3.54 3.7 33 22.2 2015 6.18 0.64 412. 2,067 11.2 420 965 4,229 5,075 30 0.1 21 17 25 97 15 4.37 4.8 42 12.8 2016 6.84 0.97 45.5 2,893 23.6 349 798 4,747 5,700 26 0.1 17 19 75 93 12 3.33 3.5 95 19.6 2017 6.90 0.62 42.7 2,158 15.7 469 1,075 2,524 3,025 16 0.1 19 20 59 41 8 1.44 1.5 39 16.4 Maximum 6.90 1.55 56.3 2,893 23.6 908 2,080 21633 25,960 44 2.3 44.5 20 75 173 15 6.16 7.2 348 56.4 Minimum 4.96. 0.26 29.3 1,157 0.5 349 .798 2,524 3,025 14 0.1 4 11 10 27 2 1.44 1.4 24 12.8 Average 6.20 0.61 42.2 1,683, 5.2 671 1,538 14,039 16,845 28 0.5 16 17 26 78 6 4.04 4.4 89 29.5 #Tests 37 37 37 37 37 37 37 33 33 37 37 35 37 35 35 34 34 34 32 33 Site: S6a Ranch : Nedden rie P pH Salinity 11 10 10 9 8- 9 7 8 6 N O a 7 5 6 4 3 5 2 4 1 AW 3 N M tt to CO CO M O N M to CO F--Co M O N M v CO�CO O O r N M"t to CO� 0 N M tt CO h CO M O N M a• CO r,CO O O N M.e ICJ CO �CO M O N M, CO h 00 CO n0 CO CO M CO CO CD O M M M M M O M M M O O O O O O O O O O �-�- CO M CO M M O M M CO M M M O M M M O M M O O O O O O O O O O M M M M M M M M M M M O M M M M M M O O O O O O O O O O O O O O O O O O O M M M.M M M M M M 01 M M M M M M M M M 0 0 0 0 0 0 0 0 0 0 0 0 6 0 Z O O O .----- �-r------c------N N N N N N N N N N N N N N N N N N -------�---c-.- �-.-.----—N N N N N N N N N N N N N N N N N N —+—pH Linear(pH) --*--Salinity Linear(Salinity) Cation Exchange Capacity Sodium Adsorption Ratio 50 20 40 15 0 30 C a 10 r g 20 5 10 O N CO d'LO CO P_CO M O N C9 st to CO t`CO M O N M.e to CO It- CO M O N M cr tO CO 1` 0 N M It to CO r-M M O N M v to M h CO.M O W N M v to M I-W M O W N M G M O n . CO M M m OD Cq CO CO M M M M M M M M M M M 0 0 0 0 0 0 0 0 0 0 <--- CD 00 O O O M CO w CO M M M M M M M M M M 0 0 0.0 0 00 0 0 0 �-- —r- M M M M M M M M.M M M M M MMMMMM O O O O O O O O O O OOOO O O O O MMMMMMM M M M M M M M M M M M M O O CDO O O O CD CIO O O O O O 00 O .---——————T�-.———•-r-r--r- —.-—.-.--—————— N N N N N N N N N N N N N N N N —�-CEC Linear(CEC) —+—SAR Linear(SAR) Site S7a SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY SOIL QUALITY DATA Ranch: Bruns Type: JaC 2017 Inches: 06-12 EC TKN NO3 P P205 K K20 Cu Mo SO4 CEC Ca Na Mg Exch Cl Exch P Date pH mmho Sat% mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg mg.Kg me/100g mg/L mg/L mg/L - SAR Na% mg/L mg/L 02/28/17 5.97 0.383 47.1 2,970 15.0- 304 700 5,136 .: 6,200: 18 0.08 36.0 14.2 33.1 10.80 7.55 0.44 < 1.00 7.8 17.2 05/31/17 5.78 0.309 37.2 2,440 7.7 352. 810 4,569. :_.5-,500, 25 0.06 12.0 16.9 32.5 4.98 6.89 0.21 < 1.00 8.2 09/07/17 5.76 0.203 38.5 2,090 5.4 308 ` 710'. 3,01.8 3,600 24 0.05 11:0 17.1 21.2 5.98 4.18 0.31 < 1.00 3.2 8.9 11/30/17 5.72 0.625 40.8 2,210 21.0 486 1,110. 1,840 2,200 16 0.06 33.0 21.7 62.3 11.00 13.60 0.33 < 1.00 7.3 11.0 Maximum 5.97 0.625 47.1 2,970 21.0 486 1,110 5,136 6,200 25 0.08 36.0 21.7 62.3 11.00 13.60 0.44 < 1.00 7.8 17.2 Minimum 5.72 0.203 37.2 2,090 5.4 304 700 1,840 2,200 16 0.05 11.0 14.2 21.2 4.98 4.18 0.21 < 1.00 3.2 8.2 Average 5.81 0.380 40.9 2,428 12.3 363 833 3,641 4,375 20 0.06 23.0 17.5 37.3 8.19 8.06 0.32 < 1.00 6.1 11.3 #Tests 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 --4 4 4 3 4 Site S7a SOUTH TAHOE PUBLIC UTILITY.DISTRICT ALPINE COUNTY SOIL QUALITY DATA Ranch: Bruns . Type: JaC From: 1981 Inches: 06-12 To: 2017 EC TKN NO3 P P205 K K20 Cu Mo SO4 CEC Ca Na Mg Exch Cl Exch P Year pH mmho Sat% mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg me/100g mg/L mg/L mg/L SAR Na% mg/L mg/L 1981 5.58 0.67 37.5 1,384 0.9 301 689 20,371 24,445 305 0.8 17. 13 1982 5.77 0.26 39.4 1,728 4.5 520 1,191 18,522- 22,226 33 0.5 14 13 1983 5.98 0.15 41.2 1,864 0.8 611 1,399 19,125 22,950 31 0.6 - 17 16 17 12 22 1984 5.87 0.17 40.8 1,858 0.9 574 1,314 21,964 26,357 31 0.7 8 15 14 19 3 1.29 1.0 12 1985 5.83 0.20 41.7 2,085 0.7 678 1,553 21,717 26,060 29 0.4 5 14 15 14 .3 0.83 0.1 15.0 7.7 1986 5.84 0.18 40.4 1,946 0.5 606 1,388 20,067 24,080 32 0.4 6 14 15 11 3 0.70 < 1.0 15.0 7.2 1987 5.93 0.18 40.1 1,907 0.3 645 1,477 21,909 26,291 31 0.5 5 14 17 12 4 0.68 < 1.0 17.0 8.7 1988 6.05 0.24 40.9 2,098 0.5 630 1,443 20,000 24,000 33 0.5 9 15 27 15 6 0.66 < 1.0 15.0 10.1 1989 6.10 0.20 39.7 .2,003 0.6 549 . '1,257 21.,636 25,964 31 0.2 7 14 24- - 9 6 0.45 1.0 20.0 8.0 1990 6.30 -0.19 39.1 3,063 0.7 .564 1,291 .18,625 22,350 23 0.4 7 14 21 10. 5 0.49 1.0 20.0 5.8 1991 6.30 0.22 39.0 1,765 1.6 649 1,487 21,083 25,300 24 0.6 6 14 26 10 6 0.47 < 1.0 10.0 9.7 1992 6.27 0.30. 37.9 1,882 3.1 668 1,530 20,667 24,800 23 0.6 5 17 32 11 8 0.44 < 1.0. 22.0 9.5 1993 6.13 0.20 35.4 1,583 1.8 598 1,368 22,417 26,900 17 0.3 5 17 18 7 4 0.40 < 1.0 8.0 12.9 1994 6.14 0.18 37.4 1,607 1.4 683 1,563 23,083 .27,700 14 0.3 7 15 20 9 5 0.46 ;< 1.0 7.0 7.3 1995 6.11 0.23 35.7 1,464 3.4 698 1,576 19,756 23,667 22 0.8 4 15 21 9 5 0.47 1.0 7.0 4.8 1996 6.15 0.26 36.1 1,445 2.7 644 1,475 15 1.0 1 15 24 17 6 0.64 1.1 7.0 4.1 1997 6.15 0.16 39.8 1,472 2.9 639 1,464 18 1.0 1 13 15 8 4 0.52 1.0 5.0 3.5 1998 6.21 0.13 39.9 1,511 32.4 900 2,060 32 1.2 33 11 12 9 3 0.60 < 1.0 5.1 1999 6.12 0.15 43.6 1,898 12.1 885 2,027 65 1.8 2 17 16 10 3 0.63 ---< 1.0 -8.6 2000 6.29 0.15 39.3 1,683 2.8 850 1,945 20,225 24,300 45 < 1.0 51 16 12 13 3 0.92 < 1.0 5.8 2001 6.06 0.28 42.8 1,788 5.2 815 1,867 20,150 24,200 47 2.3 2 .18 29 11 6 0.51 < 1.0 9.0 11.1 2002 6.14 0.37 38.9 1,705 9.9 790 1,810 20,325 24,400 40 1.3 2 17 35 14 8 0.64 < 1.0 8.0 10.7 2003 6.46 0.21 40.0 1,578 3.2 845 1,938 20,950 25,150 41 1.5 3 16 22 6 5 0.32 1.0 4.6 9.0 2004 6.33 0.20 41.1 1,725 2.9 978 2,240 21,150 25,375 48 1.3 4 18 19 7 4 0.36 < 1.0 6.3 10.9 2005 6.25 0.16 43.4 1,800 2.8 1,023 2,343. 19,900 23,875 46 1.3 .3 18 17 6 3 0.36 < 1.0 3.4 8.4 2006 6.10 0.15 42.7 1,598 2.6 910 2,085 17,084 20,500- 49 0.8 2 14 14 6 3 0.37 < 1.0 3.3 .8.5 2007 5.96 0.10 44.1 2,058 1.2 699 1,600 8,629 10,350 34 0.2 17 22 9 4 0.47 < 1.0 7.9 6.0 2008 6.03 0.22 41.8 1,715 4.7 622 1,425 4,547- 5,425 25 0.1 17 28 9 5 0.43 < 1.0 6.3 6.1 2009 5.78 0.21 42.7- 1,938 4.1 674 1,545 5,502 6,625 15 0.2 7 17 18 11 4 0.62 < 1.0 7.9 5.6 2010 6.09 0.24 41.9 2,285 3.6 632 1,448 5,120 6,150 29 0.1 9 1.7 27 8 6 0.36 < 1.0 6.2 5.4 2011 5.82 0.25 39.8 1,705 7.5- 548 1,255 6,217 7,450 31 0.1 38 16 23 8 5 0.39 < 1.0 5.2 4.5 2012 5.87 0.25 40.4 1,727 7.6 505 1,155 4,920 5,900 25 0.1 43 15 24, 9 5 0.46 < 1.0 7.1 7.6 2013 5.76 0.27 41.7 1,833 4.6 465 1,063. 6,225 7,450 25 0.3 19 14 30 9 5 0.43 < 1.0 13.5 6.3 2014 5.75 0.26 43.7 2,183 6.7 574 1,315 4,683 5,600 26 0.2 14 16 27 8 5 0.38 < 1.0 4.8 7.2 2015 5.55 0.45 41.7 2,758 13.3 556 1,273 4,305 5,150 29 0.2 20 17 42 12 24 0.37 < 1.0 3.8 10.4. 2016 5.76 0.26 42.1 2,613 6.8 473 1,083 6,355 7,625 24 0.2 13 16 25 7 6 0.39 < 1.0 5.0 13.9 2017 5.81 0.38 40.9. 2,428 12.3 363 833 3,641 4,375 20 0.1 23 17 37 8 8 0.32 < 1.0 6.1 11.3 _ Maximum 6.46 0.67 44.1 3,063 32.4 1,023 2,343 23,083 27,700 305 2.3 51 18 42 19. 24 1.29 1.1 22.0 13.9 Minimum 5.55. 0.13 35.4 1,384 0.3 301 689 3,641 4,375 14 0.1 1 11 12 6 3 0.32 0.1 3.3 3.5 Average 6.02 0.24 40.4 1,883 4.7 658 1,507 15,481 18,575 38 0.6 12 15 22 10 5 0.52 1.0 9.7 7.9 #Tests 37 37 37 37 37 37 37 33 33 37 37 35 37 35 35 34 34 34 32 33 Site: S7a Ranch : Bruns .pH Salinity 11 T 10 10 T 9 8 9 7 8 N 6 a. 7 5 6 4 5 3 2 4 1 3 N M v O CD rl-CO M O N M O CD ti CO O O N M v O CD Co M CD N M ,t O CD 0 N M"I.O CD r-CO O O N M a O CO h CO M O N M a O CO�CO,M O N M"r O CD O CO O CO CO CO M M w M M M M M M M M M M O O O O O O O O O O �M M M M M M M M M M M M M M M M M M N N N N N N N N N N N N N N N N N N M M M M M M M M M M M M M M M M M M M O O O O O O CD CD CDO O O O O O O O O --——c---—c-——a---r c-—a--N N N N N N N N N N N N N N N N N N �—pH Linear(pH) --*--Salinity Linear(Salinity) Cation Exchange Capacity Sodium Adsorption Ratio 50 20 40 15 0 30 Q CO 10 Cr 20 5 10 0 N CO a'O CO t-W M O c-N M"�O W.I--00 M O.a-N M Qt O CD h 00 M O N M H O CD f- 0 �-N M v O CD h CD M O N CM,4r O fD CO M O N M v O CD ti CO M O�-N M Cn fD t` 00 CO CO O 00 M O w 00 M M M M M M M M M M 0 0 0 O 0 0 0 0 0 0 ——,E —s- M N M O M O M O DO M M M M M M M M M M O 0 N 0 0 M M 0 M 0 0 N M I 0� m—---M M W-m m—---m---N N N N N N N N N N N N N N N N N N M M M M M M M M M M a)0)T M M M M M M N N N N N N N N N N N N N N N N N N —�CEC Linear(CEC) --+--SAR Linear(SAR) ALPINE COUNTY MONITORING WELLS Site: ACMW-01AW SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2017 _ Depth Water Temp Alk . Hard Turb Total P TKN NH3-N NO2-N NO3-N Total N Date ft Level C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L mg/L 01/24/2017 5.39 5487.7 9.5 6.14 40.0 0.010 < -0.110 < 0.020 < 0.010 0.235 0.234 04/05/2017 6.00 5487.1 10.2 6.59 40.3 0.026 < 0.050 < 0.020 < 0.010 .0.738 0.705 07/19/2017 4.69 5488.4 12.5 6.82 37.8 0.023 < 0.050 < 0.020 < 0.010 0.428 0.402 10/17/2017 7.31 5485.8 13.5 6.66 35.9 0.028 < 0.120 0.053 < 0.010 0.156 0.223 Maximum 7.31 5488.4 13.5 &82 40.3 0.028 < 0.120 0.053 < 0.010 0.738 0.705 Minimum 4.69 5485.8 9.5 6.14 35.9 0.010 < 0.050 < 0.020 < 0.010 0.156 0.223 Average 5.85 5487.3 11.4 6.55 38.5 0.022 < 0.083 0.028 < 0.010 0.389 0.391 #Tests 4 4 4 4 4 0 0 4 4 4 4 4 4. Site: ACMW-01AW SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2017 Total Fecal TDS EC Chloride COD SO4 Color Coli E.coli Strep Date mg/L umhos mg/L mg/L mg/L Units MPN MPN MPN Comments 01/24/2017 68 90.0 1.75 3.68 1 < 1 04/05/2017 84 96.9 1.85 3.89 < 1 < 1 07/19/2017 76 88.6 2.14 3.79 1 < 1 10/17/2017 .84 84.9 2.32 3.08 < 1 < 1 Maximum 84 96.9 2.32 3.89 1 < 1 Minimum 68 84.9 1.75 3.08 < 1 < 1 Average 78 90.1 2.02 3.61 1.0 < 1.0 #Tests 4 4 4 0 4 0 .4 4 0 Site: ACMW-01AW SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA From: 1989 To: 2017 Depth Water Temp Alk Hard Turb Total P TKN NH3-N NO2-N NO3-N Total N Year ft Level C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L mg/L 89 9.0 5480.7 10.4 6.86 41.0 26 46.02 0.142 0.107 0.027 < 0.010 0.306 0.387 90 7.7 5481.1 11.1 6.91 61.0 54 36.80 0.090 0.084 .0.021 < 0.010 0.278 0.373 91 7.1 5481.6 11.1 7.26 41.0 38 32.73 0.087 0.106 0.040 0.012 0.233 0.350 92 7.8 5480.9 11.4 6.79 58.0 52 1.52 0.035 0.106 0.026 0.010 0.211 0.327 93 7.2 5481.5 11.3 6.85 52.0 51 16.25 0.036 0.116 0.027 0.011 0.588 0.715 94 7.9 5481.9 10.2 6.82 46.0 39 3.77 0.028 0.088 0.029 0.010 0.229 0.326 95 6.5 5482.2 11.6 6.55' 64.0 63 1.60 0.023 0.103 0.031 0.011 1.054 1.168 96 6.3 5482.4 12.2 6.50 64.0 58 16.87 0.074 0.097 0.022 0.010 0.542 0.648 97 7.4 5481.3 11.9 6.49 55.0 49 2.93 0.033 0.104 0.037 0.011 1.013 1.129 98 6.3 5482.4 11.3 6.27 44.0 48 1.07 0.028 0.132 0.021 0.012 0.312 0.457 99 6.3 5482.4 11.2 6.26 44.0 44 2.23 0.026 0.108 < 0.020 < 0.010 0.204 0.322 00 6.2 5482.5 10.8 6.71 43.0 52 1.26 0.041 0.160 0.020 < 0.010 0.604 0.701 01 6.8 5481.9 10.7 6.82 35.0 45 9.89 0.062 0.142 0.036 < 0.020 0.380 0.578 02 6.3 5482.4 10.5 6.50 34.0 54 14.63 0.038 0.126 < 0.017 0.611 1.011 03 6.9 5481.8 11.2 6.93 39.1 1.85 0.024 0.112 < 0.015 0.870 1.263 04 6.0 5482.7 10.1 6.77' 42.7 63 3.40 0.025 0.110 0.020 < 0.015 1.215 1.633 05 6.1 5482.6 9.7 6.75 41.8 48 10.25 0.033 0.129 < 0.009 0.516 0.629 06 5.0 5483.7 10.8 6.74 38.2 33 15.77 0.045 0.440 < 0.010 0.132 0.309 07 6.1 5482.E 11.0 6.48, 41.8 37 11.45 0.032 0.055 < 0.011 0.362 0.400 08 5.6 5483.1 10.5 6.64 42.4 35 26.04 0.050 0.081 < 0.013 1.282 1.329 09 -5.7 5483.0 9.4 6.63 36.7 37 23.53 0.068 0.081 < 0.010 0.683 0.813 10 5.3 5483.4 9.3 6.33 44.0 63 10.75 0.030 0.065 < 0.020 1.980 2.041 11 5.3 5483.4 10.1 6.79 40.5 33 19.65 0.041 < 0.055 < 0.012 0.491 0.484 12 6.7 5486.5 10.6 6.75 31.7 0.049 0.072 0.022 < .0.010 0.177 0.275 13 6.3 5486.9 10.7 6.75 46.0 0.042 0.102 0.028 < 0.010 0.108 0.176 14 7.5 5485.6 10.7 6.73 38.1 0.153 0.082 0.021 < 0.011 0.143 0.165 15 11.2 5482.01 11.0 6.67 33.8 0.022 0.054 0.020 < 0.010 0.121 0.152 16 6.3 5486.8 11.4 6.57 35.4 0.032 < 0.055 < 0.020 < 0.010 0.542 0.488 17 5.8 5487.3 11.4 6.55 38.5 0.022 < 0.083 0.028 < 0.010 0.389 0.391 Maximum 11.2 5487.3 12.2 7.26 64.0 63 46.02 0.153 0.440 0.040 < 0.020 1.989 2.041 Minimum 5.0 5480.7 9.3 6.26 31.7 26 1.07 0.022 0.054 0.020 < 0.009 0.108 0.152 Average 6.7 5483.0 10.8 6.68 43.9 46 13.49 0.049 0.109 O.a26 < 0.012 0.537 0.657 #Tests 29 29 29 29 29 22 23 29 29 20 29 29 29 Site: ACMW-01AW SOUTH TAHOE PUBLIC UTILITY DISTRICT ,PINE COUNTY GROUNDWATER QUALITY DA From 1989 To: 2017 Total Fecal/ Fecal TDS EC Chloride COD SO4 Color Coli E. coli Strep Year mg/L umhos mg/L mg/L mg/L Units MPN MPN MPN Comments 89 78 97 1.6 5 6.35 3 < 2 90 94 123 1.5 6 5.43. < 5 2 < 2 91 84 88 1.5 < 5 6.95 < 5 3 < 2 92 87 122 -2.0 < 5 3.33 < 5 2 < 2 93 92 120 2.8 5 5.52 < 5 2 2 < 2 94 77 106 3.0 < 5 4.42- 10 2 < 2 95 106 162 7.6 5 3.02 5 7 2 96 109 147 5.0 2 4.39 5 12.3 1 97 97 132 4.3 2 3.28 5 2.3 1 98 77 101 2.6 < 5 1.84 < 5 3.4 < 1.1 99 77 104 1.7 < 5 3.03 5 2.3 1.1 00 79 101 3.3 < 5 1.86 < 5 1.2 < 1.1 01 76 83- 2.9 8 2.28 30 1.7 < 1.1 02 78 89 4.3 < 5 2.58 < 5 1.3 < 1.1 03 84 104 4.6 5 2.62 5 1.1 1.1 04 89- 119 7.1 6 2.77 - 10 1.3 < 1.1 05 82 108 4.6 < 5 3.64 18 1.2 < 1.1 06 84 92 1.8 <, 5 3.83 1.3 < 1.1 07 79 95 1.7 7 2.33 < 1.1 < 1.1 08 91 107 3.7 < 5 2.80 60 < 1.3 < 1.1 09 86 94 3.1 6 2.74 1.5 < 1.1 10 96 132 7.3 < 5 2.61 1.1 < 1.1 11 90 99 2.5 5 4.01 1.2 < 1.1 12 81 70 1.1 2.31 1.7 < 1.1 .13 83 96 1.3 3.24 1.4 < 1.1 14 75 .83 1.4 3.78 1.9 < 1.1 15 70 79 1.4 4.73 2.4 < 1.0 16 95 118 1.6 5.30 9.6 < 1.0 17 78 90 2.0 3.61 1.0 < 1.0 - Maximum 109 162 7.6 8 6.95 60 12.3 , 2.0 < 2 Minimum 70 70 1.1 2 1.84 < 5 1.0 1.0 < 2 Average 85 106 3.1 5 3.61 11 2.6 1.3 < 2 #Tests 29 29 29 23 29 17 29 29 1 Site ACMW=01AW Nitrate-Nitrogen and Water Level Chlorides 5 5495 50 4 5490 40 3 5485 d > 30 J _J E 2 5480 E 20 1 5475 10 5470 0 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 —�Nitrate Water Level --s—Chloride Total Dissolved Solids (TDS) Total Phosphorus 500 0.50 400 0.40 300 0.30 J J tm E E 200 0.20 100 0.10 0 0.00 . . . . . . . . . . 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08-09 10 11 12 13 14 15 16 17 --�—TDS Linear(TDS) --*.--Total P Linear(Total P) Annual Metals Report AC M W-01 AW Main Dam , Ca Mg K Na All As Ba Be Ag Cd Cr Cu ACMW-01AW 10/31/1988 12 3.6 1.1 6.8 2400 <4 40 <10 <0.1 <10 <20 11/28/1989 9.4 4.1 1 6.1 1300 <10 110 <10 <1 <10 <50 08/01/1990 12 3.7 1.5 7.1 1100 <4 84 <10 <0.1 <10 <20 08/21/1991 9 3.1 1 5.2 600 <4 61 <10 <0.1 <10 <20 07/21/1992 14 4 1 7.2 76 <4 55 <10 <0.1 <10 <20 07/12/1994 11 3.2 0.9 5.4 660 <2 45 <10 0.1 <10 <20 08/15/1995 15 4.4 1.1 6.8 310 <1 65 <10 <0.1 <10 <10 06/19/1996 18 5.3 1.2 6.9 120 <1 76 <10 <0.1 <10 <10 06/16/1997 14 4.3 1.4 7.2 250 <2 56 <10 <0.5 <10 <25 .07/21/1998 12.3 3.36 0.918 5.15 <25 <2 <100 <10 <0.5 <10 <20 06/20/1999 5.71 1.76 0.548 2.99 530 <2 <100 <1 <10 0.28 <10 <20 07/18/2000 7.4 2.84 0.928 5.38 <2 <100 <10 <20 06/19/2001 6.65 2.01 0.76 4.25 <2 <100 <10 <20 06/18/2002 6.61 2.13. 0.878 4.32 400 <2 35 <0.2 <10 <0.2 <1 <20 06/17/2003 7.18 2.42 0.938 4.84 300 <2 35.7 <0.2 <10 <0.2 <1 <20 05/18/2004 7.78 2.46 0.866 4.83 440 <2 <100 <0.2 <10 <0.2 <1 <20 06/14/2005 8.73 2.72 0.793 4.64 <2 <100 <10 <20 06/01/2006 7.84 2.76 1.11 4.91 1200 3.42 <2 <10 <2 <2 <20 06/19/2007 8.9 2.53 0.894 5.11 420 <2 37 <1 <10 <0.5 <1 <20 06/04/2008 9.84 3.3 1.24 6.13 4300 2.92 68 <1 <10 <0.5 <1 <20 06/17/2009 8.15 2.46 0.932 5.68 830 <2 41 <1 <10 <0.5 <1 <20 06/09/2010 14 4.2 1.1 6.8 88 <1 63 <1 <0.5 <0.5 <1 <2 06/14/2011 8.41 2.86 1.01 5.58 2430 <1 47.9 <1 <0.5 <0.5 <1 <2 06/14/2012 854 6.02 87.5 <1 <0.5 8.42 06/18/2013 9.77 2.70 1.05 5.53 06/17/2014 7.79 2.48 <1 5.05 151 1.46 36.5 <1 <0.5 <0.5 <1 <2 07/15/2015 8.13 2.51 <1 4.56 218 <1 40.1 <1 <0.5 <0.5 <1 <10 07/12/2016 7.63 2.47 1.03 4.26 1960 <1 46.9 <1 <0.5 <0.5 1.03 <2 07/19/2017 8.78 2.60 1.03 4.58 676 <1 44.4 <1 <0.5 <0.5 <1 <2 Fe Hg Mn MO Ni Pb Se Sb TI V Zn ACMW-01AW 10/31/1988 820 <0.2 90 <5 <50 <1 <1 <10 11/28/1989 1700 <1 120 <10 <5 <50 08/01/1990 860 <0.2 100 1 <1 <10 08/21/1991 550 <0.2 64 2 <1 <10 07/21/1992 72 <0.2 <10 <1 <1. <10 07/12/1994 410 <0.2 7.1 <1 <1 7.2 08/15/1995 160 <0.2 <5 <1 <1 <5 06/19/1996 <30 <0.2 <5 <1 <1 <5 06/16/1997 200 <0.5 <10 <5 <5 <50 07/21/1998 83.4 <0.5 <20 <2.5 <5 <25 06/20/1999 115 <0.2 <20 <5 <2.5 <1 <3 <1 <10 07/18/2000 367 <20 <2.5 <10 06/19/2001 548 <20 <2.5 <10 06/18/2002 372 0.02 <20 <1 <2.5 <2 <1 <0.2 <10 06/17/2003 242 <0.01 <20 <1 <2.5 <2 <1 <0.2 <10 05/18/2004 339 0.01 <20 <1 <2.5 <2 <1 <0.2 <10 06/14/2005 507 <20 <2.5 <10 06/01/2006 1890 <0.2 23.8 <2 2 <2.5 <10 <2 <1 2 169 06/19/2007 25.3 <0.2 <20 <2 <5 <2.5 <5 <1 <1 <3 <10 06/04/2008 141 <0!2 26.8 <2 <5 <2.5 <5 <1 <1 <3 <10 06/17/2009 416 <0.2 33.9 <2 <5 <2.5 <5 <1 <1 <3 11.3 06/09/2010 56 <0.2 <2 <2 <5 <0.5 <5 <1 <1 <3 <20 06/14/2011 1100 <0.2 8.11 <2 <5 <0.5 <5 <1 <1 <3 <20 06/14/2012 <0.2 5.47 13.4 <5 <1 <1 13.3 06/17/2014 405 <0.2 <2 <2 <5 <0.5 <5 <1 <1 <3 <20 07/15/2015 179 <0.2 <2 <2 <5 <0.5 <5 <1 <1 <3 <20 07/12/2016 1610 <0.2 16.7 <2 <5 <0.5 <5 <1 <1 <3 <20 07/19/2017 647 <0.2 3.29 <2 <5 <0.5 <5 <1 <1 <3 <20 Cations reported as mg/L.All other metals reported as ug/L. Site: ACMW-01 BE SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2017 Depth Water Temp Alk Hard Turb Total P TKN NH3-N NO2-N NO3-N Total N Date. ft Level C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L . mg/L 01/24/2017 3.25 5500.3 8.0 6.00 58.5 0.010 < 0.110 < 0.020 < 0.010 0.282 0.258 04/05/2017 2.23, 5501.3 10.6 6.46 60.2 0.026 < 0.050 < 0.020 < 0.010 0.965 0.921 07/19/2017 5.82 5497.7 9.5 6.62 41.0 0.031 < 0.050 < 0.020 < 0.010 0.251 0.242 10/17/2G17 12.81 5490.7 10.2 6.64 41.1 0.033 < 0.120 0.032 < 0.010 0.185 0.224 Maximum 12.81 5501.3 10.6 6.64 60.2 0.033 < 0.120 0.032 < 0.010 0.965 0.921 Minimum 2.23 5490.7 8.0 6.00 41.0 0.010 < 0.050 < 0.020 < 0.010 0.185 0.224 Average 6.03 5497.5 9.6 6.43 50.2 0.025 < 0.083 0.023 < 0.010 0.421 0.411 #Tests 4 4 4 4 4 0 0 4. 4 4 4 4 4 Site: ACMW-01 BE SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2017 Total Fecal TDS EC Chloride COD SO4 Color Coli E.coli Strep Date mg/L umhos mg/L mg/L mg/L Units MPN MPN MPN Comments 01/24/2017 86 120 1.73 2.12 < 1 < 1 04/05/2017 111 140 3.98 2.43 < 1 < 1 07/19/2017 79 90 1.42 2.92 < 1 < 1 10/17/2017 87 92 1.23 2.76 < 1 < 1 Maximum 111 140 3.98 2.92 < 1 < 1 Minimum 79 90 1.23 2.12 < 1 < 1 Average 91 110 2.09 2.56 < 1.0 < 1.0 #Tests 4 4 4 0 4 0 4 4 0 Site: ACMW-01 BE SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA From: 1989 To: 2017 Depth Water Temp Alk Hard Turb Total P TKN NH3-N NO2-N NO3-N Total N Year ft Level C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L mg/L 89 10.5 5491.8 9.8 7.05 72.0 50 8.22 0.040 0.109 0.035 < 0.012 0.371 0.456 90 10.1 5491.0 9.1 7.02 51.0 40 4.37 0.025 0.085 0.025 < 0.010 0.157 0.252 91 18.2 5482.9 9.7 7.23 57.0 46 18.50 0.063 0.093 0.038 0.011 0.185 0.288 82 12.9 5488.2 10.4 6.91 50.0 39 24.00 0.053 0.113 0.028 0.010 0.163 0.287 83 10.8 5490.3 10.2 6.87 63.0 67 7.75 0.031 0.069 0.021 0.010 0.728 0.807 94 11.1 5490.0 10.4 6:62 60.0 56 2.07 0.030 0.083 0.025 0.010 0.318 0.410 95 8.1 5493.0 9.8 6.67 69.0 66 0.73 0.025 0.197 0.047 0:011 0.405 0.613 96 7.9 5493.2 11.2 6.44 67.0 <66 1.74 0.018 0.099 0.020 0.011 0.438 0.548 97 11.1 5490.1 11.0 6.35 68.0 68 1.50 0.019 0.088 0.021 0.018 0.821 0.928 98 8.4 5492.7 10.1 6.24 52.0 47 3.10 0.022 0.116 < 0.020 < 0.010 0.541 0.668 99 9.0 5492.1 10.1 6.29 56.0 55 0.76 0.021 0.111 < 0.020 < 0.010 0.449 0.570 00 9.7 5491.4 10.6 6.81 47.0 39 5.80 0.029 0.100 0.022 < 0.010 0.169 0.233 01 11.6 5489.5 10.2 6.80 43.0 31 3.91 0.031 0.109 0.020 < 0.010 0.200 0.319 02 9.9 5491.2 8.6 6.52 37.0 30 10.11 0.029 0.126 < 0.010 0.142 0.284 03 11.5 5489.6 9.8 6.84 39.6 7.77 0.026 0.099 0.012 0.587 0.687 04 10.0 5491.1 9.8 6.57 43.6 25 4.25 0.039 0.119 < 0.020 < 0.010 0.128 0.263 05 9.5 5491.6 11.1 6.47 42.4 35 4.35 0.027 0.089 < 0.010 0.204 0.222 06 5.8 5495.3 11.3 6.41 44.9 38 12.40 0.027 0.203 < 0.010 0.425 0.580 07 10.5 5490.6 11.1 6.31 38.7 30 13.80 0.037 0.055 < 0.010 0.125 0.163 08 11.6 5489.5 9.4 6.53 33.2 33 9.35 0.039 0.073 < 0.010 0.193 0.233 09 12.3 5488.8 9.3 6.50 40.2 34 6.07 0.144 0.084 < 0.010 0.198 0.250 10 10.5 5490.6 9.7 6.47 46.7 38 7.95 0.031 < 0.050 < 0.010 0.242 0.279 11 8.0 5493.1 10.3 _ 6.17 56.7 59 7.10 0.039 < 0.060 < 0.010 0.886 0.849 12 12.7 5490.9 8.5 6.27 53.9 0.027 < 0.046 0.023 < 0.010 0.279 0.373 13 10.8 5492.7 7.3 6.29 47.6. 0.067 < 0.080 0.025 < 0.009 0.177 0.228 14 12.4 5491.2 8.2 6.50 50.0 0.043 0.052 0.021 <•- 0.011 0.151 0.139 15 13.9 5489.7 10.5 6.81 61.1 0.026 < 0.050 0.020 < 0.010 0.143 0.159 16 8.8 5494.8 8.5 6.34 76.2 0.076 < 0.055 < 0.020 < 0.010 0.213 0.181 17 6.0 5497.5 9.6 6.43 50.2 0.025 < 0.083 0.023 < 0.010 0.421 0.411 Maximum 18.2 5497.5 11.3 7.23 76.2 68 24.00 0.144 0.203 0.047 0.018 0.886 0.928 Minimum 5.8 5482.9 7.3 6.17 33.2 25 0.73 0.018 0.046 < 0.020 < 0.009 0.125 0.139. Average 10.5 5491.2 9.8 6.58 52.3 45 7.20 0.038 0.093 0.025 0.010 0.326 0.403 #Tests 29 29 29 29 29 22 23 29 29 20 29 29 29 Site: ACMW-01 BE SOUTH TAHOE PUBLIC UTILITY DISTRICT PINE COUNTY GROUNDWATER QUALITY DA From 1989 To: 2017 Total Fecal/ Fecal TDS EC Chloride COD SO4 Color Coli E. coli Strep Year mg/L umhos mg/L mg/L mg/L Units MPN MPN MPN Comments 89 101 168 3.1 5 4.63 < 2 < 2 90 75 112 1.5 6 3.64 < 5 < 2 < 2 91 88 118 1.7 < 5 6.01 < 5 3 < 2 82 80 105 1.4 6 5.17 < 5 2 < 2 83 103 140 1.7 13 4.49 < 5 < 2 2 < 2 94 85 129 1.7 < 5 3.54 < .4 < 2 < 2 95 94 144 1.9 5 2.90. 5 2. 2 96 99 140 1.8 2 2.19 5 1 1 97 102 145 2.1 4 2.89 5 1 1 98 80 111 1.1 < 5 2.05 < 5 < 1.0 < 1.1 99 86 121 1.3 < 5 2.63 < : 5 < 1.2 < 1.1 00 77 97 0.9 < 5 1.49 < 5 < 1..1 < 1.1 01 69 85 1.4 8 1.27 13 < 1.1 < 1.1 02 66 81 2.5 < 5 1.29 10 < 1.1 < 1.1 03 77 90 1.9 5 1.62 8 1.1 1.1 04 79 91 1.7 < 5 1.76 8 < 1.1 < 1.1 05 75 92 1.5 < 5 1.56 5 < 1.1 < 1.1 06 83 97 1.3 < 5 1.33 < 1.1 < 1.1 07 74 83 1.2 5 1.39 < 1.1 < 1.1. 08 71 74 1.8 < 5 1.61 20 < 1.4 < 1.1 09 83 89 1.5 5 1.13 < 1.1 < 1.1 10 79 103 1.3 < 5 1.22 < 1.1 < 1.1 11 95 125 1.9 < 7 1.33 < 1.1 < 1.1 12 97 112 1.4 1.95 < 1.1 < 1.1 13 86 100 1.4 1.98 < 1.1 < 1.1 14 89 101 1.4 2.31 < 1.1 < 1.1 15 98 128 1.4 3.03 < 1.0 < 1.0 16 121 156 1.6 2.83 < 1.0 < 1.0 17 91 110 2.1 2.56 < 1.0 < 1.0 Maximum 121 168 3.1 13 6.01 20 3.0 2.0 < 2 Minimum 66 74 0.9 2 1.13 < 4 < 1.0 < 2 Average 86 112 1.6 6 2.48 7 1.3 1.3 < 2 #Tests 29 29 29 23 29 17 29 29 1 Site ACMW=O..l BE Nitrate-Nitrogenand Water Level Chlorides 5 T 5510 50 4 5500 40 3 5490 30 J CO) E E 2 5480 20 1 5470 10 0 5460 0 O m tf) f,- 0) — co L 0) co LO r co U-, O ch to f� O (M t0 I- 00 m 00 O O O O O O O O 00 O co m m m O O O O O �— — Nitrate Water Level ---*--Chloride Linear(Chloride) Total Dissolved Solids (TDS) Total Phosphorus 500 T 0.20 400 0.15 300 J J . as vs 0.10 E E 200 100 0.05 - Al 11,01$... 0 0.00 o) c— C'7 M lc•) f- 0) � M C7 lc7 I— O r M lt) I,- C3 � M cq f- 00 O 00 O O O O O O O O 00 0) 00 d7 O 0) O O O O O --�-TDS Linear(TDS) ---*----Total P Linear(Total P) Annual Metals Report ACMW-01BE Secondary Dam Ca Mg K Na All As Ba Be Ag Cd Cr Cu ACMW-01 BE 10/31/1988 10 4.6 1.4 7.1 700 <4 30 <10 <0.1 <10 <20 11/28/1989 12.5 5 1 13.8 110 <10 <100 <10 <1 <10 <50 08/01/1990 8.8 3.3 0.6 5.3 90 <4 34 <10 <0.1 <10 <20 08/21/1991 11 5 0.9 5.4 210 <4 49 <10 <0.1 <10 <20 07/21/1992 10 4.1 0.8 5.4 200 <4 45 <10 <0.1 <10 <20 ,07/19/1994 11' 4.4 0.8 5.8 500 <2 54 <10 0.1 <10 <20 08/15/1995 13 5.3 0.8 6.5 64 <1 59 <10 <0.1 <10 <10 06/19/1996 18 7.5 1 7.6 140 <1 88 <10 <0.1 <10 <10 06/16/1997 17 7.4 1.2 8.9 170 <2 97 <10 <0.5 <10 <25 07/21/1998 7.85 3.25 0.687 5.52 58 <2 <100 <10 <0.5 <10 <20 06/20/1999 12.3 5.9 1.04 8.05 160 <2 <100 <1 <10 <0.1 <10 <20 07/18/2000 5.94 3.05 0.694 10.3 <2 <100 <10 <20 06/19/2001 7.08 2.86 0.6 5.82 <2 <100 <10 <20 06/18/2002 6.6 2.54 0.589 5.7 110 <2 37 <0.2 <10 <0.2 <1 <20 06/17/2003 5.86 2.95 1.02 5.99 300 <2 39.9 <0.2 <10 <0.2 <1 <20 05/18/2004 8.1 3.49 0.635 6.44 210 <2 <100 <0.2 <10 <0.2 <1 <20 06/14/2005 10.2 4.2 0.562 7 <2 <100 <10 <20 06/01/2006 9.89 4.08 0.791 7.11 120 <2 <2 <10 <2 <2 <20 06/19/2007 7.34 2.93 0.659 5.96 88 2.12 37 <1 <10 <0.5 <1 <20 06/04/2008 5.09 2.2 0.557 5.11 1200 <2 35 <1 <10 <0.5 <1 <20 06/17/2009 7.54 3.35 1.04 6.63 1500 2.22 47 <1 <10 <0.5 <1 <20 06/09/2010 9.2 3.9 <1 6.9 110 <1 44 <1 <0.5 <0.5 <1 2.3 06/14/2011 14.1 6.16 1 9.04 42.6 <1 60.4 <1 <0.5 <0.5 <1 <2 06/14/2012 24.9 <1 56.2 <1 <0.5 <1 06/18/2013 7.35 2.91 0.562 5.69 06/17/2014 9.60 4.35 <1 6.89 457 1.56 51.4 <1 <0.5 <0.5 <1 <2 07/15/2015 11.0 5.36 1.37 7.30 3600 <1 85.3 <1 <0.5 <0.5 3.83 <10 07/12/2016 14.8 6.30 <1 8.32 867 <1 76.8 <1 <0.5 <0.5 <1 <2 07/19/2017 7.53 3.29 <1 5.47 736 <1 '41.0 <1 <0.5 <0.5 <1 <2 Fe Hg Mn MO Ni Pb Se Sb TI V Zn ACMW-01BE 10/31/1988 690 <0.2 420 <5 <50 <1 <1 <10 11/28/1989 150 <1 120 <10 <5 <50 08/01/1990 37 <0.2 25 <1 <1 <10 08/21/1991 180 <0.2 54 <1 <1 <10 07/21/1992 230 <0.2 49 <1 <1 <10 07/19/1994 330 <0.2 53 <1 <1 6.1 08/15/1995 180 <0.2 80 <1 <1 9.5 06/19/1996 220 <0.2 77 <1 <1 <5 06/16/1997 480 <0.5 <10 <5 <5 <50 07/21/1998 333 <0.5 37.2 <2.5 <5 <25 06/20/1999 171 <0.2 38.2 - <5 <2.5 <1 <3 <1 <10 07/18/2000 348 <20 <2.5 <10 06/19/2001 <100 <20 <2.5 <10 06/18/2002 135 0.02 <20 <1 <2.5 <2 <1 <0.2 <10 06/17/2003 330 <0.01 <20 <1 <2.5 <2 <1 <0.2 <10 05/18/2004 126 .0.01 <20 <1 <2.5 <2 <1 <0.2 <10 06/14/2005 121 <20 <2.5 <10 06/01/2006 328 <0.2 <20 <2 <2 <2.5 <10 <2 <1 <2 <10 06/19/2007 601 <0.2 <20 <2 <5 <2.5 <5 <1 <1 <3 <10 06/04/2008 626 <0.2 <20 <2 <5 <2.5 <5 <1 <1 <3 <10 06/17/2009 2820 <0.2 179 <2 <5 <2.5 <5 <1 <1 <3 17.5 06/09/2010 220 <0.2 7 <2 <5 <0.5 <5 <1 <1 <3 <20 06/14/2011 545 <0.2 <2 <2 <5 <0.5 <5 <1 <1 <3 <20 06/14/2012 <0.2 <2 <5 <5 <1 <1 <3 06/17/2014 579 <0.2 23.7 <2 <5 <0.5 <5 <1 <1 <3 <20 07/15/2015 4660 <0.2 106 2.24 <5 1.71 <5 <1 <1 8.92 <20 07/12/2016 885 <0.2 15.3 <2 <5 <0.5 <5 <1 <1 <3 <20 07/19/2017 779 <0.2 15.0 <2 <5 <0.5 <5 <1 <1 <3 <20 Cations reported as mg/L.All other metals reported as ug/L. Site: ACMW-02N SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2017 Depth Water Temp Alk Hard Turb Total P TKN NH3-N NO2-N NO3-N Total N Date ft Level C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L mg/L 01/24/2017 6.03 5463.7 11.6 6.26 58.7 0.021 0.150 < 0.020 < 0.030 2.890 3.040 04/05/2017 7.34 5462.4 12.4 6.93 71.9 0.020 0.070 < 0.020 < 0.030 2.410 2.480 07/19/2017 5.49 5464.2 12.8 6.66 53.3 0.020 < 0.050 < 0.020 < 0.030 1.900 1.940 10/17/2017 7.41 5462.3 13.4 6.61 61.3 0.021 < 0.120 0.031 < 0.030 1.490 1.520 r Maximum 7.41 5464.2 13.4 6.93 71.9 0.021 0.150 < 0.031 < 0.030 2.890 3.040 Minimum 5.49 5462.3 11.6 6.26 53.3 0.020 < 0.050 < 0.020 < 0.030 1.490 1.520 Average 6.57 5463.1 12.6 6.62 61.3 0.021 0.098 < 0.023 < 0.030 2.173 2.245 #Tests 4 4 4 4 4 0 0 4 4 4 4 4 4 Site: ACMW-02N SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2017 Total Fecal/ Fecal TDS EC Chloride COD SO4 Color Coli E.coli Strep Date mg/L umhos mg/L mg/L mg/L Units MPN MPN MPN Comments 01/24/2017 99 149 1.55 2.68 < 1 < 1 04/05/2017 120 182 1.58 2.86 < 1 < 1 07/19/2017 95 130 2.17 3.32 < 1 < 1 10/17/2017 106 143 1.72 3.40 < 1 < 1 Maximum 120 182 2.17 3.40 < 1 < 1 Minimum 95 130 1.55 2.68 < 1 < 1 Average 105 151 1.76 3.07 < 1.0 < 1.0 #Tests 4 4 4 0 4 0 4 4 0 Site: ACMW-02N SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA From: 1989 To: 2017 Depth Water Temp Alk Hard Turb Total P TKN NH3-N NO2-N NO3-N Total N Year ft Level C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L mg/L 89 7.1 5458.7 12.4 8.47 89.0 58 7.29 0.039 0.086 0.031 < 0'.010 0.108 0.174 90 6.8 5458.6 12.1 8.99 106.0 60 17.98 0.035 0.097 0.021 < 0.010 0.082 0.189 91 7.0 5458.4 11.9 7.96 79.0 56 2.48 0.023 0.098 0.041 0.015 0.093 0.207 92 7.0 5458.4 11.6 7.40 71.0 48 0.57 0.020 0.099 0.037 0.012 0.091 0.202 93 6.3 5462.3 11.9 7.28 68.0 48 1.25 0.017 0.096 0.024 0.013 0.085 0.195 94 .7.1 5458.3 11.7 6.92 70.0' 53 1.01 0.022 0.092 0.025 0.013 0.071 .0.174 95 6.2 5459.2 12.2 6.84 63.0 45 0.68 0.020 0.106 0.023 0.011 0.086 0.203 96 5.8 5459.6 12.8 6.64 64.0 48 1.50 0.016 0.102 0.028 0.011 0.093 0.206 97 6.8 5458.6 12.7 6.55 65.0 54 0.94 0.017 0.094 0.020 0.011 0.091 0.198 98 .6.0 5459.4 12.0 6.48 63.0 48 1.75 0.020 0.114 < 0.020 < 0.010 0.113 0.239 99 6.2 5459.2 11.9 6.49 59.0 47 0.40 0.021 0.117 < 0.020 < 0.010 0.135 0.262 00 6.2 5459.2 12.3 6.71 59.0 45 0.71 0.017 0.122 0.02.5 < 0.010 0.091 0.167 01 7.0 5458.4 12.4 6.70 60.0 45 1.12 0.017 0.113 < 0.020 < 0.010 0.059 0.184 02 6.5 5458.9 11.8 6.67 58.0 42 1.31 0.016 0.116 < 0.010 0.084 0.209 03 6.8 5458.6 12.8 6.77 53.7 1.60 0.015 0.094 < 0.010 0.104 0.205 04 6.6 5458.8 11.4 6.86 54.6 29 0.81 0.018 0.128 < 0.020 < 0.010 0.057 0.195 05 7.0 5458.4 11.0 6.63 51.7 41 0.39 0.015 0.097 < 0.010 0.149 0.278 06 6.5 5458.9 12.0 6.67 53.5 41 0.99 0.017 0.240 < 0.010 0.135 0.385 07 7.5 5457.9 12.5 6.50 56.5 43 1.09 0.017 0.050 < 0.010 0.093 0.128 08 7.7 5457.7 12.2 6.60 56.0 39 1.16 0.024 0.060 < 0.018 0.150 0.193 09 8.0 5457.4 11.9- 6.41 55.8 45 0.71 0.016 < 0.050 0.011 0.198 0.233 10 7.5 5457.9- 11.6 6.51 54.0 44 0.97 0.022 0.056 < 0.010 0.194 0.232 11 8.6 5456.8 12.3 6.51 57.1 45 0.81 0.021 0.058 < 0.011 0.142 0.143 12 9.7 5460.0 12.2 6.64 62.9 0.026 < 0.047 0.023 < 0.010 0.148 0.202 13 10.4 5459.3 12.3 6.63 65.5 0.042 0.075 0.028 < 0.009 0.119 0.173 14 9.9 5459.8 12.6 6.61 60.2 0.024 0.055 0.026 < 0.011 0.235 0.246 15 11.3 5458.4 13.4 6.58 59.6 0.021 < 0.050 < 0.020 < 0.010 0.391 0.396 16 9.3 5460.4 13.6 6.59 62.6 0.026 0.093 < 0.020 < 0.015 1.938 1.959 17 6.6 5463.1 12.6 6.62 61.3 0.021 0.098 < 0.023 < 0.030 2.173 2.245 Maximum 11.3 5463.1 13.6 8.99 106.0 60 17.98 0.042 0.240 0.041 0.030 2.173 2.245 Minimum 5.8 5456.8 11.0 6.41 51.7 29 0.39 0.015 0.047 < 0.020 < 0.009 0.057 0.128 Average 7.4 5459.0 12.2 6.87 63.4 47 2.07 0.021 0.093 0.025 0.012 0.259 0.346 #Tests 29' 29 29 29 29 22 23 29 29 20 29 29 29 Site: ACMW-02N SOUTH TAHOE PUBLIC UTILITY DISTRICT PINE COUNTY GROUNDWATER QUALITY DA From 1989 To: 2017 Total Fecal/ Fecal TDS EC Chloride COD SO4 Color Coli E.coli Strep Year mg/L umhos mg/L mg/L mg/L Units MPN MPN MPN Comments 89 130 231 5.9 5 9.73 < 2 < 2 90 113 195 4.9 < 5 6.56 5 < 2 < 2 91 113 165 4.8 < 5 5.40 < 5 < 2 < 2 92 99 .157 3.5 < 5 5.09 < 5 < 2 < 2 93 100 145 2.4 8 4.94 < 5 3 < 2 < 2 94 100 150 2.9 < 5 4.72 < 4 < 2 < 2 95 90 135 2.3 5 4.29 5 2 2 96 95 .136 2.5 2 3.11 5 1 1 97 97 147 6.8, 2 4.83 5 1 1 98 95 141 3.5 < 5 3.32 < 5 1.4 < 1.1 99 90 134 3.2 < 5 2.77 < 5 3.6 2.4 2.0 00 90 129 2.8 < 5 3.15 < 5 < 1.1 < 1.1 01 87 128 3.0 9 3.01 10 < 1.1 < 1.1 02 85 122 2.6 < 5 2.56 5 < 1.1 < 1.1 03 85 118 3.0 < 5 2.38 < 5 < 1.1 < 1.1 04 82 114 2.7 < 5 2.29 6 < 1.1 < 1.1 05 79 115 2.9 < 5 2.29 < 5 < 1.1 < 1.1 06 85 120 2.8 6 2.30 < 1.1 < 1.1 07 84 124 2.9 < 5 2.24 < 1.1 < 1.1 08 85 119 2.9 < 5 2.25 < 5 < 1.1 < 1.1 09 84 122. 2.6 < 5 .2.18 < 1.1 < 1.1 10 82 117 2.1 5 2.26 < 1.1 < 1.1 11 88 121 2.2 5 2.36 < 1.1 < 1.1 12 97 133 2.9 2.71 < 1.1 < 1.1 13 99 140 3.1 2.86 < 1.2 < 1.1 14 93 129 2.7 2.75 2.9 < 1.1 15 95 137 2.5 2.81 < 1.0 < 1.0 16 .102 152 3.1 3.75 < 1.0 < 1.0 17 105 151 1.8 3.07 < 1.0 < 1.0 Maximum 130 231 6.8 9 9.73 10 3.6 2.4 2.0 Minimum 79 114 1.8 2 2.18 < 4 1.0 1.0 < 2.0 Average 94 139 3.1 5- 3.52 5 1.5 1.3 2.0 #Tests 29 29 29 23 29 17 29 29 2 Site ACMW=02N Nitrate-Nitrogen and Water Level Chlorides 5 5470 50 4 5465 40 3L > 5460 m .30 J v� 2 J a, E I- 5455 20 0 5450 10 co Ln ti < co LO W m LO tI_ to O O O O O O O O O O I -1 5445 0 rn m LO � rn cf) Ln t` rn co LO t` co m rn rn m rn O O O O O r Nitrate —♦--Water Level Linear(Nitrate) ---*---Chloride Linear(Chloride) Total Dissolved Solids (TDS) Total Phosphorus 500 0.20 400 0.15 300 J J 0.10 E E 200 0.05 100 0 0.00 (m 4n LO r, 'm co to r- 0) co LO ti 0) c- m LO rl- O co LO ti 0 r M LO r� O0 O O O O O O O O O O 00 O O O O O O O O O Or- -+--TDS. Linear(TDS) —+—Total P Linear(Total P) Annual Metals Report ACMW-02N Access Gate Ca Mg K Na All As Ba Be Ag Cd Cr Cu ,1 ACMW-02N 11/02/1988 11 5.1 3.5 28 4200 <4 76 <10 <0.1 <10 <20 11/28/1989 18.1 4.6 1.7 9.2 <100 <10 <100 <10 <1 <10 <50 08/01/1990 28 2.7 3.2 15 180 <4 120 <10 <0.1 <10 <20 08/21/1991 30 4.3 2.8 12 89 <4 140 <10 <0.1 <10 <20 07/21/1992 14 3.1 1.8 14 <50 <4 76 <10 <0.1 <10 <20 07/19/1994 15 3.6 1.3 13 180 <2 61 <10 <0.1 <10 <20 08/15/1995 13 3 1.4 12 <50 <1 55 <10 <0.1 <10 <10 06/19/1996 14 3.5 1.4 12 120 <1 58 <10 <0.1 <10 <10 06/16/1997 15 3.8 1.5 12 100 <2 <50 <10 <0.5 <10 <25 07/21/1998 14.5 3.28 1.21 10.7 119 <2 <100 <10 <0.5 <10 <20 06/20/1999 10.9 3.17 1.33 10.9 96 <2 <100 <1 <10 <0.1 <10 <20 07/18/2000 6.01 1.61 3.07 24.9 <2 <100 <10 <20 06/19/2001 11.6 3.56 1.22 9.99 <2 <100 <10 <20 06/18/2002 11 2.69 1.38 10.2 50, <2 43 <0.2 <10 <0.2 <1 <20 06/17/2003 9.37 3.01 1.23 9.11 100 <2 41.4 <0.2 <10 <0.2 <1 <20 05/18/2004 10.9 '2.89 1.05 8.77 30 <2 <100 <0.2 <10 <0.2 <1 <20 06/14/2005 10.1 2.7 0.968 8.18 <2 <100 <10 <20 06/01/2006 9.91 2.85 1.12 8.77 60 <2 <2 <10 <2 <2 <20 06/19/2007 12.4 3.18 1.14 8.38 49 <2 38 <1 <10 <0.5 <1 <20 06/04/2008 12.3 3.13 1.19 8.73 100 <2 48 <1 <10 1.5 6.8 <20 06/17/2009 12.5 3.16 0.991 8.5 58 <2 41 <1 12.3 <0.5 <1 <20 06/09/2010 12 3.3 1.1 7.4 260 <1 39 <1 <0.5 <0.5 <1 400 06/14/2011 12 3.48 1.13 9.17 28.6 <1 37.6 <1 <0.5 <0.5 <1 <2 06/14/2012 <20 <1 49.3 <1 <0.1 <1 06/18/2013 13.7 3.30 1.06 9.66 06/17/2014 13.3 3.54 1.23 8.76 33.5 <1 38.9 <1 <0.5 <0.5 <1 <2 07/15/2015 15.7 3.59 1.03 9.78 87.6 <1 39.9 <1 <0.5 <0.5 <1 <10 07/12/2016 13.0 3.68 1.02 7.91 105 <1 41.0 <1 <0.5 <0.5 <1 <2 07/19/2017 14.6 4.42 1.04 7.66 481 <1 40.9 <1 <0.5 <0.5 <1 <2 Fe Hg Mn MO Ni Pb Se Sb TI V Zn ACMW-02N 11/02/1988 3800 <0.2 550 7 <50 3 <1 16 11/28/1989 580 <1 530 <10 <5 <50 08/01/1990 280 <0.2 230 <1 <1 <10 08/21/1991 180 <0.2 260 <1 <1 <10 07/21/1992 40 <0.2 120 <1 <1 <10 07/19/1994 140 <0.2 110 <1 <1 <5 08/15/1995 <30 <0.2 15 <1 <1 <5 06/19/1996 <30 <0.2 66 <1 <1 <5 06/16/1997 74 <0.5 72 <5 <5 <50 07/21/1998 56.4 <0.5 65.8 <2.5 <5 <25 06/20/1999 <100 <0.2 59.4 <5 <2.5 <1 <3 <1 <10 07/18/2000 92.8 <20 <2.5 <10 06/19/2001 <100 114 <2.5 <10 06/18/2002 <100 0.02 38.8 <1 <2.5 <2 <1 <0.2 <10 06/17/2003 <100 <0.01 56.1 <1 <2.5 <2 <1 <0.2 <10 05/18/2004 <100 0.02 28.6 <1 <2.5 <2 <1 <0.2 <10 06/14/2005 <100 <20 <2.5 <10 06/01/2006 128 <0.2 62.9 <2 <2 <2.5 <10 <2 <1 <2 <10 06/19/2007 <50 <0.2 34.5 <2 <5 <25 <5 <1 <1 <3 <10 06/04/2008 86.5 <0.2 91.2 6.5 <5 <2.5 <5 3.5 1.3 6.6 <10 06/17/2009 <50 <0.2 43 <2 <5 <2.5 <5 <1 <1 <3 <10 06/09/2010 33 <0.2 65 <2 <5 <0.5 <5 <1 <1 <3 28 06/14/2011 <20 <0.2 27.9 <2 <5 <0.5 <5 <1 <1 <3 <20 06/14/2012 <0.2 <2 <5 <5 <1 <1 <3 06/17/2014 <20 <0.2 8.63 <2 <5 <0.5 <5 <1 <1 <3 <20 07/15/2015 <20 <0.2 17.6 <2 <5 <0.5 <5 <1 <1 <3 <20 07/12/2016 19.8 <0.2 25.0 <2 <5 <0.5 <5 <1 <1 <3 <20 07/19/2017 46.7 <0.2 72.8 <2 <5 <0.5 <5 <1 <1 <3 <20 Cations reported as mg/L.All other metals reported as ug/L. Site: ACMW-02S SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2017 Depth Water Temp Alk .Hard Turb Total P TKN NH3-N NO2-N NO3-N Total N Date ft Level C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L mg/L 01/24/2017 4.53 5467.1 9.8 5.97 42.4 0.020 < 0.110 < 0.020 < 0.030 1.450 1.470 04/05/2017 7.73 5463.9 10.2. 6.36 35.5 0.013 0.090 < 0.020 < 0.020 1.570 1.660 07/19/2017 4.53 5467.1 12.4 6.33 47.2 0.018 < 0.050 < 0.020 < 0.030 0.081 0.108 10/17/2017 8.42 5463.2 15.2 6.24 55.9 0.025 0.160 0.032 < 0.010 < 0.010 0.160 Maximum 8.42 5467.1 15.2 6.36 55.9 0.025 0.160 0.032 < 0.030 1.570 1.660 Minimum 4.53 5463.2 9.8 5.97 35.5 0.013 < 0.050 < 0.020 < 0.010 < 0.010 0.108 Average 6.30 5465.3 11.9 6.23 45.3 0.019 0.103 0.023 < 0.023 0.778 0.850 #Tests 4 4 4 4 4 0 0 4 4 4 4 4 4 Site: ACMW-02S SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2017 Total Fecal/ Fecal TDS EC Chloride COD SO4 Color Coli E.coli Strep Date mg/L umhos mg/L mg/L mg/L Units MPN MPN MPN Comments 01/24/2017 78 111 1.79 6.68 2 < 1 04/05/2017 85 104 2.18 5.76 1 < 1 07/19/2017 73 103 1.30 3.39 12.1 < 1 10/17/2017 86 119 1.47 3.29 6.3 < 1 Maximum 86 119 2.18 6.68 12.1 < 1 Minimum 73 103 1.30 3.29 < 1 < 1 Average 81 109 1.69 4.78 5.4 < 1.0 #Tests 4 4 4 0 4 0 4 4 0 Site: ACMW-02S SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA From: 1989 To: 2017 Depth Water Temp Alk Hard Turb Total P TKN NH3-N NO2-N NO3-N Total N Year ft Level C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L mg/L 89 7.1 5460.5 11.7 6.70 58.0 38 5.11 0.028 0.088 0.030 < 0.015 0.193 0.267 90 7.0 5460.2 11.8 7.07 55.0 38 2.06 0.021 0.094 0.023 < 0.010 0.155 0.259 91 7.0 5460.2 12.2 7.01 56.0 41 0.57 0.020 0.098 0.036 0.010 0.219 0.328 92 6.9 5460.3 11.6 6.76 49.0 37 0.76 0.022 0.094 0.029 0.010 0.093 0.197 93 6.6 5460.5 11.4 6.86 57.0 42 1.83 0.022 0.098 0.024 0.011 0.079_ 0.188 94 7.4 5459.8 12.5 6.84 54.0 42 2.92 0.030 0.114 0.027 < 0.010 0.087 0.210 95 6.8 5460.5 12.0 6.57 51.0 36 0.98 0.030 0.118 0.054 0.010 0.101 0.228 96 6.0 5461..2 12.6 6.37 54.0 42 1.35 0.036 0.137 0.02-9 0.011 0.081 0.229 97 7.4 5459.8 12.5 6.50 50.0 40 1.25 0.018 0.098 0.021 0.011 0.103 0.213 98 6.3 5460.9 12.0 6.28 50.0 36 0.83 0.021 0.128 < 0.021 < 0.010 0.138 0.277 99 6.6 5460.6 12.3 6.34 47.0 35 0.62 0.017 0.141 < 0.020 < 0.010 0.042 0.193 00 6.5 5460.7 12.3 6.62 46.0 41 0.68 0.016 0.118 < 0.024 < 0.010 0.035 0.110 01 7.7 5459.5 12.5 6.57 47.0 38 1.28 0.014 0.111 0.021 < 0.010 0.018 0.145 02 6.6 5460.6 12.4 6.45 48.0 38 0.99 0.014 0.149 < 0.010 0.186 0.370 03 6.9 5460.3 12.3 6.66 43.1 2.35 0.015 0.103 < 0.010 0.077 0.153 04 6.6 5460.6 11.3 6.52 46.9 28 0.61 0.017 0.157 0.020 < 0.010 0.139 0.347 05 7.3 5459.9 10.7 6.44 46.8 38 0.87 0.017 0.104 < 0.018 0.119 0.210 06 6.9 5460.3 12.5 6.34 47.2 36 1.82 0.016 0.309 < 0.010 0.123 0.444 07 8.1 5459.1 12.7 6.22 44.3 36 0.95 0.016 0.055 < 0.010 0.231 0.268 08 8.1 5459.1 11.9 6.34 46.0 39 1.02 0.018 0.058 < 0.010 0.341 0.375 09 8.4 5458.8 11.8 6.16 47.7 41 0.95 0.015 0.110 < 0.010 0.155 0.2.20 10 7.4 5459.8 11.7 6.33 45.4 37 0.78 0.021 0.078 < 0.010 0.096 0.145 11 9.6 5457.6 12.2 6.48 45.7 38 0.47 0.018 0.056 < 0.010 0.078 0.080 12 11.5 5460.1 12.2 6.54 46.4 0.021 0.059 0.023 < 0.010 0.201 0.263 13 12.4 5459.2 12.4 6.54 50.9 0.032 0.080 0.028 < 0.012 0.752 0.863 14 10.6 5461.0 13.0 6.29 38.9 0.024 0.058 0.025 < 0.012 1.565 1.185 15 12.4 5459.2 13.8 6.15 42.0 0.019 0.108 < 0.020 < 0.020 3.038 3.093 16 8.9 5462.7 13.9 6.18 41.5 0.025 0.073 < 0.020 < 0.038 2.333 2.210 17 6.3 5465.3 11.9 6.23 45.3 0.019 0.103 0.023 < 0.023 0.778 0.850 Maximum 12.4 5465.3 13.9 7.07 58.0 42 5.11 0.036 0.309 0.054 0.038 3.038 3.093 Minimum 6.0 5457.6 10.7 6.15 38.9 28 0.47 0.014 0.055 < 0.020 < 0.010 0.018 0.080 Average 7.8 5460.3 12.2 6.49 48.3 38 1.35 0.021 0.107 0.026 0.012 0.398 0.480 #Tests 29 29 29 29 29 22 23 29 29 20 29 29 29 Site: ACMW-02S SOUTH TAHOE PUBLIC UTILITY DISTRICT ,PINE COUNTY GROUNDWATER QUALITY DA From 1989 To: 2017 Total Fecal/ Fecal TDS EC Chloride COD SO4 Color Coli E.coli Strep Year mg/L umhos mg/L mg/L mg/L Units MPN MPN MPN Comments 89 85 133 1.8 5 4.78 4 < 2 90 80 123 1.5 5 3.80 5 < 2 < 2 91 84 121 1.8 < 5 5.34 < 5 < 2 < 2 92 77 103 1.6 6 3.70 < 5 < 2 < 2 93 91 118 1.4 < 5 3.58 < 5 6 < 2 < 2 94 83 118 1.4 < 5 3.88 6 2 < 2. 95 78 111 1.9 5 3.35 5 2 2 96 80 116 1.7 2 2.08 5 1.5 1.0 97 78 107 1.8 4 2.96 5 3.7 1.0 98 74 108 2.0 < 5 2.71 < 5 5.3 < 1.1 99 70 101 1.5 < 5 2.52 < 5 3.7 < 1.1 00 72 97 1.6 < 5 1.41 < 5 2.5 < 1.1 01 69 97 1.7 7 1.38 8 1.3 < 1.1 02 75 103 2.5 < 5 1.51 5 4.0 1.2 03 70 96 2.3 < 5 1.49 < 5 1.4 < 1.1 04 76 101 2.7 < 5 1.41 7 3.1 < 1.1 05 73 101 2.4 < 5 1.85 5 < 1.1 < 1.1 06 77 105 2.2 < 5 1.38 < 1.2 < 1.1 07 73 102 2.6 6 1.75 2.9 1.2 08 75 101 2.3 < 5 2.22 < 5 3.5 < 1.1 09 74 108 1.9, 6 2.53 < 4.8 < 1.1 10 72 106 1.6 6 2.56 < 9.1 < 1.1 11 76 100 1.4 7 1.96 2.3 < 1.1 12 75 99 1.4 2.52 < 1.1 < 1.1 13 88 119 2.5 4.76 < 1.3 < 1.1 14 82 101 1.9 4.83 7.7 1.2 15 89 126 1.7 4.56 3.2 < 1.0 16 70 112 1.7 5.86 60.2 < 1.0 17 81 109 1.7 4.78 5.4 < 1.0 Maximum 91 133 2.7 7 5.86 8 60.2 2.0 < 2 Minimum 69 96 1.4 2 1.38 < 5 < 1.1 1.0 < 2 Average 77 108 1.9 5 3.02 5 5.2 1.3 < 2 #Tests 29 29 29 23 29 17 29 29 1 i Site ACMW=02S Nitrate-Nitrogen and Water Level Chlorides 5 5470 50 4 40 5465 3 $_ 5460 J 30 'a� 2 E E 5455 20 1 � 0 5450 10 M O M LO O CO l!) 1` M M O O O O O O. O O �- 0 -1 5445 0 co LO 0 COa In ao rn rn rn rn rn O O O O O --�—Nitrate Water Level Linear(Nitrate) Chloride Linear(Chloride) Total Dissolved Solids (TDS) Total Phosphorus 500 0.20 400 0.15 300 J 0.10- E 200 0.05 100 0 0.00 O M to O M O r co O c) 1` O M ►O r,- O CM In r` M O O O O O O O _ O O O r OD O O O O O O O O O O ----b---Total P Linear(Total P) —�—TDS Linear(TDS) Annual Metals Report ACMW-02S Access Gate Ca Mg K Na Al As Ba Be Ag Cd Cr Cu ACMW-02S 10/31/1988 9.7 3 2.1 9.9 200 <4 30 <10 <0.1 <10 <20 11/28/1989 10.7 3.8 1.3 16 <100 <10 <100 <10 <1 <10 <50 08/01/1990 11 2.8 1.9 9.2 <50 <4 57 <10 <0.1 <10 <20 08/21/1991 11 3 1.9 7.1 <50 <4 53 <10 <0.1 <10 <20 07/21/1992 12 2.8 1.8 8.4 <50 <4 55 <10 <0.3 <10 <20 07/19/1994 13 3.2 1.8 7.1 310 <2 69 <10 0.1 <10 <20 08/15/1995 12 2.9 1.8 6.8 <50 <1 59 <10 0.2 <10 <10 06/19/1996 12 2.8 1.8 6 78 <1 54 <10 <0.1 <10 <10 06/16/1997 9.7 2.4 1.8 6.5 75 <2 <50 <10 7.4 <10 <25 07/21/1998 11.1 2.36 1.77 6.31 65 <2 <100 <10 <0.5 <10 <20 06/20/1999 7.93 3.43 1.7 5.73 <50 <2 <100 <1 <10 <0.1 <10 <20 07/18/2000 45.6 16.2 1.76 44.9 <2 <100 <10 <20 06/19/2001 9.14 2.06 1.61 5.15 <2 <100 <10 <20 06/18/2002 8.88 2.03 1.68 5.17 20 <2 44 <0.2 <10 <0.2 <1 <20 06/17/2003 9.58 2.53 1.44 5.57 <10 <2 51.7 <0.2 <10 <0.2 <1 <20 05/18/2004 8.71 2.15 1.66 4.99 20 <2 <100 <0.2 <10 <0.2 <1 <20 06/14/2005 9.02 2.02 1.4 4.97 <2 <100 <10 <20 06/01/2006 9.11 2.23 1.72 5.54 50 <2 <2 <10 <2 <2 <20 06/19/2007 10.1 2.2 1.73 5.54 62 <2 46 <1 <10 <0.5 <1 <20 06/04/2008 9.61 2.15 1.79 5.2 78 <2 49 <1 <10 <0.5 <1 <20 06/17/2009 10.5 2.42 1.75 5.67 39 <2 51 <1 15.4 <0.5 <1 <20 06/09/2010 10 2.4 1.7 5.2 91 <1 46 <1 <0.5 <0.5 <1 <2 06/14/2011 9.56 2.4 1.71 5.19 43.9 <1 41.9 <1 <0.5 <0.5 <1 <2 06/14/2012 40.9 <1 43.2 <1 <0.5 <1 06/18/2013 12.6 2.77 1.96 5.32 06/17/2014 7.08 1.80 1.63 4.39 315 1.46 34.6 <1 <0.5 <0.5 <1 <2 07/15/2015 12.1 2.67 1.70 5.10 <20 <1 <2 <1 <0.5 <0.5 <1 <10 07/12/2016 11.7 2.73 1.87 5.58 279 <1 55.7 <1 <0.5 <0.5 <1 <2 07/19/2017 11.2 2.56 1.83 6.18 37.0 <1 49.9 <1 <0.5 <0.5 <1 <2 Fe Hg Mn Mo Ni Pb Se Sb TI V Zn ACMW-02S 10/31/1988 260 <0.2 190 6 <50 <1 <1 <10 11/28/1989 <100 <1 <10 <10 <5 <50 08/01/1990 <30 <0.2 28 <1 <1 <10 08/21/1991 <30 <0.2 10 <1 <1 <10 07/21/1992 <0.2 <1 <1 <10 07/19/1994 320 <0.2 76 <1 <1 6 08/15/1995 <30 <0.2 <5 <1 <1 <5 06/19/1996 <30 <0.2 <5 <1 <1 <5 06/16/1997 <50 <0.5 <10 <5 <5 <50 07/21/1998 63.9 <0.5 <20 <2.5 <5 <25 06/20/1999 <100 <0.2 <20 <5 <2.5 <1 <3 <1 <10 07/18/2000 1295 <20 <2.5 <10 06/19/2001 <100 <20 <2.5 <10 06/18/2002 <100 0.02 <20 <1 <2.5 <2 <1 <0.2 <10 06/17/2003 <100 <0.01 <20 <1 <2.5 <2 <1 <0.2 <10 05/18/2004 <100 <0.01 <20 <1 <2.5 <2 <1 <0.2 <10 06/14/2005 <100 <20 <2.5 <10 06/01/2006 163 <0.2 <20 <2 <2 <2.5 <10 <2 <1 <2 <10 06/19/2007 112 <0.2 <2 <2 <5 <2.5 <5 <1 <1 <3 <10 06/04/2008 249 <0.2 <20 <2 <5 <2.5 <5 <1 <1 <3 <10 06/17/2009 92.6 <0.2 <20 <2 <5 <2.5 <5 <1 <1 <3 12.8 06/09/2010 62 <0.2 3 <2 <5 <0.5 <5 <1 <1 <3 <20 06/14/2011 358 <0.2 <2 <2 <5 <0.5 <5 <1 <1 <3 <20 06/14/2012 <0.2 <2 <5 <5 <1 <3 <3 06/17/2014 1080 <0.2 2.47 <2 <5 <0.5 <5 <1 <1 <3 <20 07/15/2015 <20 <0.2 <2 <2 <5 <0.5 <5 <1 <1 <3 <20 07/12/2016 189 <0.2 2.14 <2 <5 1.66 <5 <1 <1 <3 <20 07/19/2017 36.2 <0.2 <2 <2 <5 <0.5 <5 <1 <1 <3 <20 Cations reported as mg/L.All other metals reported as ug/L. Site: ACMW-04W SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2017 Depth Water Temp Alk Hard Turb Total P TKN NH3-N NO2-N NO3-N Total N Date ft Level C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L mg/L 01/24/2017 14.24 4905.7 11.6 5.91 40.5 0.028 0.140 < 0.020 < 0.030 1.63 1.77 04/05/2017 15.37 4904.5 12.0 6.31 39.2 0.018 0.130 < 0.020 < 0.020 1.32 1.45 07/19/2017 8.33 4911.6 13.2 6.35 40.2 0.027 0.050 < 0.020 < 0.030 1.95 2.00 10/17/2017 11.88 4908.0 12.9 6.25 48.7 0.037 < 0.120 0.061 < 0.030 1.45 1.49 Maximum 15.37 4911.6 13.2 6.35 48.7 0.037 0.140 0.061 < 0.030 1.95 2.00 Minimum 8.33 4904.5 11.6 5.91 39.2 0.018 < 0.050 < 0.020 < 0.020 1.32 1.45 Average 12.46 4907.4 12.4 6.21 42.2 0.028 0.110 0.030 < 0.028 1.59 1.68 #Tests 4 4 4 4 4 0 0 4 4 4 4 4 4 Site: ACMW-04W SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2017 Total Fecal/ Fecal TDS EC Chloride COD SO4 Color Coli E. coli Strep Date mg/L umhos mg/L mg/L mg/L Units MPN MPN MPN Comments 01/24/2017 138 210 21.2 18.60 1 < 1 04/05/2017 140 229 21.8 15.30 < 1 < 1 07/19/2017 142 213 25.4 14.70 866.4 < 1 10/17/2017 139 193 13.0 16.00 579.4 < 1 Maximum 142 229 25.4 18.60 866.4 < 1 Minimum 138 193 13.0 14.70 < 1 < 1 Average 140 211 20.4 16.15 362.0 < 1.0 . #Tests 4 4 4 0 4 0 4 4 0 Site: ACMW-04W SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA From: 1989 To: 2017 Depth Water Temp Alk. Hard Turb Total P TKN NH3-N NO2-N NO3-N Total N Year ft Level C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L mg/L 89 14.2 4901.7 11.3 6.10 34.0 77 61.58 0.163 0.127 0.028 < 0.010 0.82 0.958 90 14.0 4902.7 12.4 6.25 33.0 97 4.90 0.034 0.104 0.020 < 0.010 0.99 1.100 91 15.1 4900.8 12.3 6.37 33.0 98 7.20 0.028 0.133 0.053 0.010 1.51 1.652 92 15.4 4900.5 11.9 6.24 34.0 96 3.10 0.038 0.118 0.026 0.012 1.74 1.868 93 12.2 4903.7 11.8 6.18 38.0 83 4.75 0.028 0.111 0.025 0.010 2.22 2.337 94 15.2 4900.7 12.2 6.23 40.0 76 1.27 0.069 0.121 0.033 0.011 3.55 3.676 95 12.9 4903.0 12.3 6.20 39.0 66 0.69 0.029 0.165 0.029 0.010 4.42 4.593 96 13.2 4902.7 12.5 6.11 43.0 62 3.08 0.028 0.181 0.021 0.013 3.03 3.219 97 11.9 4904.0 12.0 6.14 49.0 62 1.88 0.026 0.108 0.020 0.011 2.51 2.634 98 13.2 4902.7 12.0 5.82 53.0 52 5.30 0.027 0.203 < 0.024 < 0.010 3.20 3.416 99 13.4 4902.5 11.8 5.80 53.0 49 3.87 0.031 0.238 < 0.021 < 0.010 2.61 2.860 00 14.0 4901.9 11.6 6.23 52.0 47 1.75 0.018 0.118 0.021- < 0.011 2.65 2.721 01 14.2 4901.7 11.8 6.26 49.0 45 8.19 0.037 0.143 < 0.020 < 0.019 2.41 2.640 02 13.9 4902.0 12.0 6.15 46.0 47 4.46 0.024 0.343 < 0.019 2.29 2.651 03 13.8 4902.1 12.4 6.55 43.0 1.64- 0.014 0.086 < 0.020 1.79 1.880 04 15.0 4900.9 11.3 6.21 44.2 29 0.33 0.019 0.133 < 0.020 < 0.020 1.70 1.862 05 .14.7 4901.2 11.7 6.30 42.8 43 1.60 0.028 0.155 < 0.019 1.96 2.135 06 13.4 4902.5 12.2 6.15 39.6 42. 1.55 0.015 0.138 < 0.049 5.31 5.086 07 15.7 4900.2 13.0 6.14 38.6 41 0.91 0.015 0.064 < 0.083 7.46 7.570 08 16.4 4899.5 12.2 6.24 42.8 33 3.90 0.021 0.057 < 0.064 5.49 5.573 09 15.1 4900.8 11.9 5.97 44.5 47 1.43 0.015 < 0.050 < 0.051 4.43 4.505 10 14.3 4901.6 12.6 6.10 48.6 43 1.07 0.020 < 0:050 < 0.040 3.57 3.636 11 12.9 4903.0 11.5 6.08 48.7 38 0.81 0.022 < 0.066 < 0.028 2.40 2.364 12 15.3 4904.6 12.3 5.99 47.4 0.021 < 0.093 0.023 < 0.028 2.34 2.508 13 15.3 4904.6 12.4 6.02 42.9 0.043 0.113 0.029 < 0.023 2.53 2.557 14 15.0 4904.9 11.8 6.18 40.1 0.018 0.100 0.029 < 0.019 1.90 1.920 15 17.2 4902.7 12.5 6.05 39.6 0.017 0.053 < 0.020 < 0.020 1.80 1.830 16 17.0. 4902.9 12.7 6.04 40.0 0.022 0.105 < 0.020 < 0.035 1.72 1.813 17 12.5 4907.4 12.4 6.21 42.2 0.028 0.110 0.030 < 0.028 1.59 1.678 Maximum 17.2 4907.4 13.0 6.55 53.0 98 61.58 0.163 0.343 0.053 0.083 7.46 7.570 Minimum 11.9 4899.5 11.3 5.80 33.0 29 0.33 0.014 0.050 < 0.020 < 0.010 0.82 0.958 Average 14.4 4902.4 12.1 6.15 42.8 '58 5.45 0.031 0.124 0.026 0.024 2.76 2.870 #Tests 29 29 29 29 29 22 23 29 29 20 29 29 29 Site: ACMW-04W SOUTH TAHOE PUBLIC UTILITY DISTRICT ,PINE COUNTY GROUNDWATER QUALITY DA From 1989 To: 2017 Total Fecal/ Fecal TDS EC Chloride COD SO4 Color Coli E. coli Strep Year mg/L umhos mg/L mg/L mg/L Units MPN MPN MPN Comments 89 244 310 52.2 5 18.65 9 < 2 90 230 ,329 53.1 6 29.30 < 5 2 < 2 91 222 313 50.5 < 5-- 31.42 < 5 2 < 2 92 222 311 49.5 7 32.04 < 5 4 < 2 93 204 301 37.6 6 29.75 < 5 7 < 2 < 2 94 181 271 29.3 < 5 25.85 7 12 < 2 95 176 268 29.9 5 22.95 5 6 2 96 163 240 24.4 3 19.95 5 18.1 1.1 97 .151 220 20.1 2 15.30 5 7.8 3.6 98 144 211 14.3 < 5 13.95 < 5 15.1 < 1.1 99 135 199 12.4 6 10.45 < 5 7.4 < 1.1 00 134 192 13.8 5 8.84 < 5 3.9 1.1 01 131 192 18.3 6 7.50 < 5 1.2 < 1.1 02 139 207 25.4 16 6.93 10 5.1 < 1.1 03 136 199 25.1 < 5 8.60 5 9.3 < 3.1 04 134 193 22.1 < 5 9.62 6 3.9 < 1.1 05 135 183 23.1 < 5 9.94 < 5 -1.8 < 1.1 06 143 212 19.0 < 5 9.75 < 1.1 < 1.1 07 146 213 12.6 < 5 10.20 15.7 < 2.9 08 137 181 13.5 < 5 9.70 5 7.4 < 1.1 09 147 233 22.9 6 8.46 1.5 < 1.1 10 145 215 21.3 < 5 7.96 6.3 < 1.1 11 138 196 17.0 < 5 7.99 8.5 1.6 12 129 180 12.7 9.77 11.2 < 1.1 13 132 183 13.9 13.42 7.2 < 1.1 14 129 185 14.2 17.46 5.0 < 1.1 15 138 202 16.4 20.05 78.3 < 1.0 16 142 215 21.2. 18.25 6.8 < 1.0 17 140 211 20.4 16.15 362.0 < 1.0 Maximum 244 329 53.1 16 32.04 10 362.0 3.6 < 2 Minimum 129 180 12.4 2 6.93 < 5 1.1 < 1.0 < 2 Average 157 226 24.3 6 15.52 5 21.6 1.5 < 2 #Tests 29 29 29 23 29 17 29 29 1 Site ACMW=04W Nitrate-Nitrogen and Water Level Chlorides 10 4910 100 g 4908 90 8 4906 so 7 4904 $ 70 6 4902 60 > �5 4900 ,� CD 50 4898 4 40 3A 4896 30 2 4894 20 1 4892 10 p 4890 rn co to t` m cn Lc) ti rn co to � 0 ao rn rn a) rn rn o o O O o m co Uo r` rn co to ti 0) co to ti co o) rn rn M m o O o o O r- �-Nitrate —*—Water Level Linear(Nitrate) t Chloride Linear(Chloride) Total Dissolved Solids (TDS) Total Phosphorus 500 0.50 400 0.40 300 0.30 J J 200 0.20 100 0.10 0 0.00 CDm to 1­ O CM to 1,- 0) U.) 0) — CO to r­ O .— CO LO rl- CD co u) � co 0) 0) 0 O) 0) O O O O O r- co O 07 m O 0) O O O O O —�—TDS Linear(TDS) --*---Total P Linear(Total P) Annual Metals Report ACMW-04W Gansberg Ca Mg K Na Al As Ba Be Ag Cd Cr Cu ACMW-04W 10/31/1988 20 5.4 3.8 12 1300 <4 120 <10 <0.1 <10 <20 11/28/1989 31.4 7.7 4 40.6 130 <10 220 <10 <1 <10 <50 08/01/1990 27 6 4.2 16 170 <4 180 <10 <0.1 <10 <20 08/21/1991 25 6.3 4.2 15 <50 <4 160 <10 <0.1 <10 <20 07/21/1992 30 6.5 4.4 20 230 <4 190 <10 0.1 <10 <20 07/12/1994 22 4.8 3.7 20 350 <2 140 <10 <0.1 <10 <20 08/15/1995 21 4.7 3.8 20 51 <1 150 <10 0.1 <10 <10 06/19/1996 19 4.3 3.5 19 95 1 140 <10 <0.1 <10 <10 06/16/1997 17 4 4.2 20 67 <2 120 <10 <0.5 <10 <25 07/21/1998 16.1 3.36 3.35 19.4 133 <2 <100 <10 <0.5 <10 <20 06/20/1999 11.4 2.02 3.16 17.7 82 <2 <100 <1 <10 <0.1 <10 <20 07/18/2000 9.41 2.73 3.03 17.9 <2 122 <10 <20 06/19/2001 12.9 2.82 3.13 19.7 <2 <100 <10 <20 06/18/2002 13.7 2.92 3.6 22.4 <10 <2 98 <0.2 <10 <0.2 <1 <20 06/17/2003 11.5 2.83 2.84 21.8 <10 <2 106 <0.2' <10 <0.2 <1 <20 05/18/2004 10.9 2.6 2.95 20 <10 <2 <100 <0.2 <10 <0.2 <1 <20 06/14/2005 11 2.55 2.87 19.3 <2 <100 <10 <20 06/01/2006 12.5 2.47 3 19.7 <50 <2 <2 <10 27 <2 <20 06/19/2007 12.1 2.55 3.11 22.8 21 <2 85 <1 <10 <0.5 <1 <20 06/04/2008 10.7 2.25 3.15 20.8 42 <2 110 <1 <10 <0.5 <1 <20 06/18/2009 12.9 2.96 3.37 23.1 33 <2 100 <1 13.7 <0.5 <1 <20 06/09/2010 14 3.1 3.1 24 <20 <1 100 <1 <0.5 <0.5 <1 <2 06/14/2011 12.4 2.98 3.14 25.2 45.4 <1 92.8 <1 <0.5 <0.5 <1 <2 06/14/2012 <20 <1 81.5 <1 <0.5 <1 06/18/2013 9.60 1.90 2.80 21:8 06/17/2014 10.6 2.44 2.92 24.2 <20 <1 78.9 <1 <0.5 <0.5 <1 <2 07/15/2015 9.33 2.18 2.64 21.9 <20 <1 85.5 <1 <0.5 <0.5 <1 <10 07/12/2016 11.2 2.66 2.91 24.9 <20 <1 91.6 <1 <0.5 <0.5 <1 <2 07/19/2017 12.7 2.81 3.27 25.1 <20 <1 95.1 <1 <0.5 <0.5 <1 <2 Fe Hg Mn MO Ni Pb Se Sb TI V Zn ACMW-04W 10/31/1988 790 <0.2 430 <5 <50 1 <1 <10 11/28/1989 140 <1 17 <10 <5 <50 08/01/1990 120 <0.2 13 <1 <1 <10 08/21/1991 <30 <0.2 <10 <1 <1 <10 07/21/1992 340 <0.2 14 <1 <1 <10 07/12/1994 290 <0.2 6.5 <1 <1 <5 08/15/1995 <30 <0.2 <5 <1 <1 <5 06/19/1996 <30 <0.2 <5 <1 <1 <5 06/16/1997 83 <0.5 <10 <5 <5 <50 07/21/1998 73.9 <0.5 <20 <2.5 <5 <25 06/20/1999 <100 <0.2 <20 <5 <2.5 2 <3 <1 10.2 07/18/2000 119 <20 <2.5 <10 06/19/2001 <100 <20 <2.5 <10 06/18/2002 <100 0.02 <20 <1 <2.5 <2 <1 <0.2 <10 06/17/2003 <100 <0.01 <20 <1 <2.5 <2 <1 <0.2 <10 05/18/2004 <100 <0.01 <20 <1 <2.5 <2 <1 <0.2 <10 06/14/2005 <100 <20 <2.5 <10 06/01/2006 <100 <0.2 <20 <2 <2 <2.5 <10 <2 <1 <2 10.2 06/19/2007 <50 <0.2 <20 <2 <5 <2.5 <5 <2 <1 <3 <10 06/04/2008 66 <0.2 <20 <2 <5 <2.5 <5 <1 <1 <3 <10 06/18/2009, 94.2 <0.2 <20 <2 <5 <2.5 <5 <1 <1 <3 15.1 06/09/2010 <20 <0.2 <2 <2 <5 <0.5 <5 <1 <1 <3 <20 06/14/2011 464 <0.2 2.01 <2 <5 <0.5 <5 <1 <1 <3 <20 06/14/2012 <0.2 <2 <5 <5 <1 <1 <3 06/17/2014 <20 <0.2 <2 <2 <5 <0.5 <5 <1 <1 <3 <20 07/15/2015 26.4 <0.2 <2 <2 <5 <0.5 <5 <1 <1 <3 <20 07/12/2016 <20 <0.2 <2 <2 <5 <0.5 <5 <1 <1 <3 <20 07/19/2017 39.3 <0.2 <2 <2 <5 <0.5 <5 <1 <1 <3 <20 Cations reported as mg/L.All other metals reported as ug/L. Site: ACMW-06S SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2017 Depth Water Temp Alk Hard Turb Total P TKN NH3-N NO2-N NO3-N Total N. Date ft Level C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L mg/L 01/24/2017 14.39 5209.1 12.5 6.50 199 0.058 0.136 < 0.020 < 0.010 0.021 0.157 04/05/2017 15.26 5208.2 14.2 7.19 190 0.100 0.080 < 0.020 < 0.010 0.052 0.132 07/19/2017 16.42 -5207.1 13.8 7.71 206 0.071 0.068 < 0.020 < 0.030 0.053 0.121 10/17/2017 15.81 5207.7 13.5 7.39 226 0.094 0.183 0.045 < 0.030 < 0.030 0.183 Maximum 16.42 5209.1 14.2 7.71 226 0.100 0.183 0.045 < 0.030 0.053 0.183 Minimum 14.39 5207.1 12.5 6.50 190 0.058 0.068 < 0.020 < 0.010 0.021 < 0.121 Average 15.47 5208.0 13.5 7.20 205 0.081 0.117 0.026 < 0.020 0.039 0.148 #Tests 4 4 4 4 4 0 0 4 4 4 4 4 4 Site: ACMW-06S SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2017 Total Fecal/ Fecal TDS EC Chloride COD SO4 Color Coli E.coli Strep Date mg/L umhos mg/L mg/L mg/L Units MPN MPN MPN Comments 01/24/2017 308 614 53.7 26.7 < 1 < 1 04/05/2017 360 644 56.4 26.1 < 1 < 1 07/19/2017 357 600 60.2 25.8 < 1 < 1 10/17/2017 386 629 55.7 26.6 < 1 < 1 Maximum 386 644 60.2 26.7 1 < 1 Minimum 308 600 53.7 25.8 < 1 < 1 Average 353 622 56.5 26.3 1.0 < 1.0 #Tests 4 4 4 0 4 0 4 4 0 Site: ACMW-06S SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA From: 1989 To: 2017 Depth Water Temp Alk Hard Turb Total P TKN NH37N NO2-N NO3-N Total N Year ft Level C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L mg/L 89 14.8 5205.9 11.9 9.29 209 170 29.13 0.060 0.253 0.119 < 0.010 0.028 0.292 90 14.9 5205.9 12.7 8.12 207 276 12.33 0.069 0.152 0.028 0.010 0.065 0.227 91 14.5 5206.2 12.2 8.20 207 136 34.00 0.064 0.413. 0.169 0.015 0.066 0.494 92 14.9 5205.8 12.1 8.57 195 344 2.30 0.049 0.288 0.068 0.012 0.066 0.366 93 14.6 5206.1 12.0 8.84 196 226 16.60 0.039 0.342 0.129 0.015 0.075 0.433 94 14.9 5205.8 12.1 9.00 182 230 19.07 0.056 0.347 0.092 0.017 0.068 0.433 95 15.9 5204.8 12.3 7.83 228 270 0.89 0.055 0.250 0.076 0.011 0.079 0.340 96 14.9 5205.8 12.5 .8.55 243 299 12.10 0.056 0.647 0.231 0.017 0.035 0.699 97 14.7 5206.0 12.0 8.79 201 228 18.23 0.070 1.404 0.410 0.031 0.044 1.479 98 15.6 5205.1 11.3 9.36 175 163 29.30 0.037 0.506 0.181 0.032 0.049 0.589 99 15.9 5204.8 11.6 7.84 258 302 0.96 0.091 0.358 0.097 0.025 0.061 0.444 00 16.1 5204.6 11.5 7.04 253 330 0.80 0.048 0.176 0.047 0.020 0.021 0.137 01 16.4 5204.3 12.2 6.98 250 259 1.28 0.041 0.237 0.021 0.023 0.042 0.324 02 15.9 5204.8 11.8 7.90 225 181 26.02 0.041 0.297 0.014 0.050 0.365 03 15.5 5205.2 12.5 7.87 203 9.55 0.027 0.209 0.024 0.067 0.290 04 15.9 5204.8 11.9 7.78 194 152 9.43 0.037 0.236 0.108 0.072 0.074 0.372 05 15.5 5205.3 11.5 7.97 186 191 6.26 0.050 0.303 0.035 0.079. 0.421 06 15.6 5205.1 12.2 7.52 205 244 0.65 0.045 0.210 0.039 0.065 0.303 07 16.1 5204.6 12.8 7.96 179 152 6.30 0.031 0.192 0.064 0.078 0.239 08 15.7 5205.0 12.6 7.74 215 256 1.04 0.056 0.223 0.059 0.050 0.201 09 15.5 5205.2 11.6 7.32 203 221 4.53 0.038 0.232 0.034 0.074 0.224 10 15.7 5205.0 12.0 8.13 186 166 13.30 0.048 0.270 0.022 0.060 0.217 11 15.2 5205.5. 11.6 8.21 169 254 1.16 0.044 0.150 0.022 0.078 0.226 12 15.7 5207.8- 12.4 8.00 190 0.054 0.162 0.059 0.029 0.058 0.239 13 15.6 5207.9, 12.7 7.20 227 0.090 0.182 0.041 0.016 0.044 0.216 14 15.8 5207.7 12.3 7.59 229 0.074 0.094 0.029 0.015 0.034 0.1-14 15 16.2 5207.3 12.5 8.07 191 0.032 0.140 0.037 < 0.010 0.092 0.232 16 16.1 5207.4 12.9 8.51 167 0.035 0.142 0.060 < 0.018 0.105 0.260 17 15.5 5208.0 13.5 7.20 205 0.081 0.117 0.026 < 0.020 0.039 0.148 Maximum 16.4 5208.0 13.5 9.36 258 344 34.00 0.091 1.404 0.410 0.072 0.105 1.479 Minimum 14.5 5204.3 11.3 6.98 167 136 0.65 0.027 0.094 0.021 < 0.010 0.021 0.114 Average 15.5 5205.8 12.2 8.05 206 230 11.10 0.052 0.294 0.101 0.025 0.060 0.356 #Tests 29 29 29 29 29 22 23 29 29 20 29 29 29 Site: ACMW-06S SOUTH TAHOE PUBLIC UTILITY DISTRICT .PINE COUNTY GROUNDWATER QUALITY DA From 1989 To: 2017 Total Fecal/ Fecal TDS EC Chloride COD SO4 Color Coli -E.coli Strep Year mg/L umhos mg/L mg/L mg/L Units MPN MPN MPN Comments 89 359 666 70.3 6 37.1 < 2 < 2 90 422 673 75.9 6 33.1 < 5 9 4 91 408 654 86.4 < 5 22.4 5 8 3 92 424 705 90.7 < 5 25.2 13 3 < 2 93 401 679 86.1 7 24.8 < 5 6 < 2 < 2 94 368 643 93.4 5 25.4 < 4 4 2 95 430 719 92.5 5 28.0 8 3 2 96 437 667 85.9 17 29.0 5 12.1 7 97 368 568 77.6 10 25.2 8 12.6 2.8 98 315 555 76.8 6 25.0 < 5 17.6 2.6 99 415 680 76.6 < 5 46.3 5 5.8 < 1.1 00 454 741 74.9 < 5 32.8 < 5 < 1.1 < 1.1 01 440 722 72.8 7 30.5 < 5 < 1.1 < 1.1 02 393 640 69.2 6 27.1 10 < 1.1 < 1.1 03 381 639 69.3 < 5 26.5 < 5 < 1.1 < 1.1 04 377 572 67.8 6 26.1 8 2.9 < 1.1 05 358 542 68.9 < 5 25.8 5 1.9 < 1.1 06 382 638 63.5 < 9 25.7 1.3 < 1.1 07 356 604 61.4 5 25.1 < 1.1 < 1.1 08 378 625 62.0 6 25.8 12 1.2 < 1.1 09 366 578 61.0 < 5 24.7 < 1.1 < 1.1 10 351 574 60.3 6 23.0 1.4 < 1.1 11 336 570 61.2 8 22.4 8.7 < 1.1 12 366 598 59.6 23.7 1.3 < 1.1 13 380 617 56.8 25.2 5.1 < 1.1 14 387 642 58.2 26.8 1.7 < 1.1 15 355 592 60.7 28.6 7.4 < 1.0 16 330 541 62.0 31.6 1.0 < 1.0 17 353 622 56.5 26.3 1.0 < 1.0 Maximum 454 741 93.4 17 46.3 13 17.6 7.0 < 2 Minimum 315 541 56.5 < 5 22.4 < 4 < 1.0 < 1.0 < 2 Average 382 630 71.0 7 27.5 7 4.3 1.7 < 2 #Tests 29 29 29 23 29 17 29 29 1 Site ACMW=06S Nitrate-Nitrogen &Water Level Chlorides 5 5210 200 180 4 5208 160 140 3 5206 120 > 100 L 2 5204 °r 80 60 1 5202 40 20 0 5200 p . 0) - M LO ti O M Ln 1, 0) e- CO LO r� CA c- M LO r- 0) m LC) r` m M LO f� CIOO O O W O O O O O O 00 O CA CA M CA O O O O O Nitrate Water Level Linear(Nitrate) —♦—Chloride Linear(Chloride) Total Dissolved Solids (TDS) Total Phosphorus 1000 T 0.4 900 800 0.3 700 600 J J rn 500 - 0.2 E � 400 300 0.1 200 100 0 0.0 (mc- co LO ti 0) �- M Ln r, (mc- M LO r, O co in t` (m M LO r— 0) m LO (� DO O O CA O CA O O O O O - CO M W O O O O O O O O —�-TDS Linear(TDS) Total P Linear(Total P) Annual Metals Report ACMW-06S Cello Ca Mg K Na Al As Ba Be Ag Cd Cr Cu ACMW-06S 11/02/1988 56 25 10 46 1100 <4 77 <10 <0.1 <10 <20 11/28/1989 103 15.4 10.1 39.8 <100 <10 390 <10 <1 <10 <50 08/01/1990 72 28 8.2 37 <50 <4 160 <10 <0.1 <10 <20 08/21/1991 76 33 8.2 37 230 <4 250 <10 0.1 <10 <20 07/21/1992 78 16 8.2 41 <50 <4 200 <10 <0.1 <10 <20 07/19/1994 75 17 8.3 50 440 <2 200 <10 0.7 <10 <20 08/15/1995 96 30 7.6 44 87 1.4 290 <10 <0.1 <10' <10 06/19/1996 81 32 9.1 52 74 1 36 <10 0.2 <10 <10 06/16/1997 81 18 9 40 46 <2 190 <10 <0.5 <10 <25 07/21/1998 60 12.5 8.03 40.1 <25 6 190 <10. <0.5 <10 <20 06/20/1999 63.6 17.2 8.12 41 66 <2 216 <1 <10 <0.1 <10 <20 06/19/2001 35.5 26 7.47 38.3 <2 115 <10 <20 06/18/2002 58.1 15.7 7.4 37 50 <2 170 <0.2 <10 <0.2 3 <20 06/17/2003 56.6 12.6 6.48 39.5 160 <2 139 <0.2 <10 <0.2 3 <20 05/18/2004 83.4 14.6 6.88 35.6 240 <2 173 <0.2 <10 <0.2 3 <20 06/14/2005 58.3 13.2 7.08 34 <2 <100 <10 <20 06/01/2006 58 23.5 7.08 33.8 <50 <2 <2 <10 <2 <2 <20 06/19/2007 63.8 25.1 7.21 32.8 <20 3.45 200 <1 <10 <0.5 <1 <20 06/04/2008 69.1 24.5 7.92 33.8 48 2.54 210 <1 <10 <0.5 <1 <20 06/17/2009 64.3 15.7 7.71 34.3 970 2.39 150 <1 14.2 <0.5 <1 <20 06/09/2010 62 17 6.9 35 200 <1 150 <1 <0.5 <0.5 <1 2.2 06/14/2011 57.9 11.3 7.25 36.7 263 <1 100 <1 <0.5 <0.5 1.1 <2 06/14/2012 408 2.72 193 <1 <0.5 <1 06/18/2013 57.9 18.7 6.92 32.0 06/17/2014 60.8 22.3 6.78 31.8 85.0 1.96 172 <1 <0.5 <0.5 <1 2.29 07/15/2015 44.7 12.6 6.72 31.6 137 <1 148 <1 <0.5 <0.5 <1 <10 07/12/2016 52.3 21.8 6.58 30.3 20.8 1.16 159 <1 <0.5 <0.5 <1 <2 07/19/2017 57.3 22.7 6.92 32.3 33.1 1.29 151 <1 <0.5 <0.5 <1 <2 Fe Hg Mn Mo Ni Pb Se Sb TI V Zn ACMW-06S 11/02/1988 1900 <0.2 590 14 <50 2 <1 13 11/28/1989 <100 <1 250 <10 <5 <50 08/01/1990 <30 <0.2 47 <1 <1 <10 08/21/1991 190 <0.2 200 1 <1 <10 07/21/1992 33 <0.2 54 <1 <1 <10 07/19/1994 230 <0.2 140 <1 <1 8 08/15/1995 58 <0.2 280 <1 <1 <5 06/19/1996 2400 <0.2 360 <1 <1 <5 06/16/1997 <50 <0.5 73 <5 <5 <50 07/21/1998 <30 <0.5 <20 <2.5 <5 26.3 06/20/1999 <100 <0.2 123 <5 <2.5 <1 <3 <1 <10 06/19/2001 <100 74 <2.5 <10 06/18/2002 <100 0.02 <20 2 <2.5 <2 <1 <0.2 <10 06/17/2003 134 <0.01 345 3 <2.5 <2 <1 <0.2 <10 05/18/2004 156 0.03 140 2 <2.5 <2 <1 <0.2 <10 06/14/2005 935 311 <2.5 <10 06/01/2006 <100 <0.2 <20 2 3 <2.5 <10 <2 <1 <2 <10 06/19/2007 106 <0.2 <20 <2 <5 <2.5 <5 <1 <1 <3 <10 06/04/2008 127 <0.2 <20 <2 <5 <2.5 <5 <1 <1 <3 <10 06/17/2009 1030 <0.2 115 8.1 <5 <2.5 <5 <1 <1 <3 13.7 06/09/2010 <20 <0.2 35 5.7 <5 <0.5 <5 ' <1 <1 <3 <20 06/14/2011 <20 <0.2 8.46 7.83 <5 <0.5 <5 <1 <1 <3 <20 06/14/2012 <0.2 2.51 <5 <5 <1 <1 <3 06/17/2014 <20 <0.2 5.82 2.26 <5 <0.5 <5 <1 <1 <3 <20 07/15/2015 <20 <0.2 9.76 5.01 <5 <0.5 <5 <1 <1 <3 <20 07/12/2016 <20 <0.2 181 2.64 <5 <0.5 <5 <1 <1 <3 <20 07/19/2017 <20 <0.2 11.7 <2 <5 <0.5 <5 <1 <1 <3 <20 Cations reported as mg/L.All other metals reported as ug/L. Site: ACMW-20 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2017 Depth Water Temp Alk Hard Turb Total P TKN NH3-N NO2-N NO3-N Total N Date ft. Level C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L mg/L 02/15/2017 7.00 5083.30 9.7 6.16 .29.4 0.052 0.110 < 0.020 < 0.020 5.610 5.720 05/09/2017 7.30 5083.00 10.9 6.08 30.8 0.050 0.340 < 0.020 < 0.040 5.710 6.050 08/16/2017 8.44 5081.86 13.5 6.11 29.9 0.077 < 0.100 0.022 < 0.010 0.059 0.158 11/14/2017 14.31 5075.99 12.8 6.27 31.2 0.073 < 0.100 < 0.020 < 0.010 0.391 0.334 Maximum 14.31 5083.30 13.5 6.27 31.2 0.077 0.340 0.022 < 0.040 5.710 6.050 Minimum 7.00 5075.99 9.7 6.08 29.4 0.050 < 0.100 < 0.020 < 0.010 0.059 0.158 Average 9.26 5081.04 11.7 6.16 30.3 0.063 0.163 0.021 < 0.020 2.943 3.066 #Tests 4 4 4 4 4 0 0 4 4 4 4 4 4 Site: ACMW-20 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2017 Total Fecal/ Fecal TDS EC Chloride COD SO4 Color Coli E.coli Strep Date mg/L umhos mg/L mg/L mg/L Units MPN MPN MPN Comments 02/15/2017 118 131.0 2.66 5.81 4.1 < 1 05/09/2017 123 159.0 6.85 9.10 < 1 < 1 08/16/2017 73 63.7 0.66 0.99 2 < 1 11/14/2017 72 79.0 ..1.96 2.53 31.7 < 1 Maximum 123 159 6.85 9.10 31.7 < 1 Minimum 72 63.7 0.66 0.991 < 1 < 1 Average 97 108.2 3.03 4.61 9.7 < 1.0 #Tests 4 4 4 0 4 0 4 4 0 Site: ACMW-20 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA From: 2012 To: 2017 Depth Water Temp Alk Hard Turb Total P TKN NH3-N NO2-N NO3-N Total N . Year ft Level C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L mg/L 12 10.9 5079.4 11.5 6.11 33.4 1.20 0.054 0.073 0.025 < 0.010 0.516 0.599 13 10.6 5079.7 11.6 6.20 31.4 0.085 0.051 0.026 < 0.013 0.623 0.856 14 12.7 5077.6 12.2 6.31 29.7 0.066 0.065 0.025 < 0.013 0.946 1.334 15` 13.2 5077.1 12.8 6.17 31.5 0.066 0.057 0.020 0.011 0.512 0.561 16 11.6 5078.8 13.1 6.15 30.9 0.058 0.375 < 0.020 < 0.063 5.344 5.626 17 9.3 5081.0 11.7 6.16 30.3 0.063 0.163 0.021 < 0.020 2.943 3.066 Maximum 13.2 5081.0 13.1 6.31 33.4 1.20 0.085 0.375 0.026 0.063 .5.344 5.626 Minimum 9.3 5077.1 11.5 6.11 29.7 1.20 0.054 0.051 0.020 0.010 0.512 0.561 Average 11.4 5078.9 12.1 6.18 31.2 1.20 0.065 0.131 0.023 0.022 1.814 2.007 #Tests 6 6 6 6 6 0 1 6 6 6 6 6 6 Site: ACMW-20 SOUTH TAHOE PUBLIC UTILITY DISTRICT .PINE COUNTY GROUNDWATER QUALITY DA. From 2012 To: 2017 Total Fecal/ Fecal TDS EC Chloride COD SO4 Color Coli E.coli Strep Year mg/L umhos mg/L mg/L mg/L Units MPN MPN MPN Comments 12 67 78 1.32 2.20 1 < 1 . 13 70 78 1.62 2.42 1 < 1 14 66 77 1.65 2.27 1 < 1 15 67 85 2.02 2.96 32 < 1 16 107 130 2.65 3.72 6 < 1 17 97 108 3.03 4.61 10 < 1 Maximum 107 130 3.03 4.61 32 1 Minimum 66 77 1.32 2.20 1 < 1 Average 79 93 2.05 3.03 9 1 #Tests 6 6 6 0 6 0 6 6 0 Site ACMW=20 Nitrate-Nitrogen &Water Level Chlorides 20 5088 50 16 5084 40 12 5080 J 30 L 8 5076 20 4 5072 10 0 5068 0 12 13 14 15 16 17 12 13 14 15 16 17 �-Nitrate ---w—Water Level Linear(Nitrate) Chloride Total Dissolved Solids (TDS) Total Phosphorus 500 0.50 400 0.40 300 0.30 E E 200 0.20 100 0.10 0 V 0.00 12 13 14 15 16 17 12 13 14 15 16 17 t TDS Total P Annual Metals Report ACMW-20 Diamond Valley Rd - Pavnesville Ca Mg K Na Al As Ba Be Ag Cd Cr Cu ACMW-20 06/20/2012 8.73 1.87 2.27 5.05 62.3 <1 21.7 <1 <10 <0.5 <1 <20 06/11/2013 5.50 1.22 1.83 3.84 07/08/2014 6.55 1.62 2.04 4.34 103 1.54 19.9 <1 <0.5 <0.5 <1 2.32 08/18/2015 8.28 2.11 2.50 5.25 61.6 <1 22.4 <1 <0.5 <0.5 <1 <2 07/27/2016 8.20 2.04 2.21 5.24 41.6 <1 20.9 <1 <0.5 <0.5 <1 <2 08/16/2017 5.85 1.32 1.58 4.70 466 <1 18.4 <1 <0.5 <0.5 <1 <2 Fe Hg Mn Mo Ni Pb Se Sb TI V Zn ACMW-20 06/20/2012 113 <0.2 <20 <2 <5 <2.5 <5 <1 <1 <3 <10 07/08/2014 502 <0.2 3.41 <2 <5 <0.5 <5 <1 <1 <3 <20 08/18/2015 91.6 <0.2 <2 2.11 <5 <0.5 <5 <1 <1 <3 <20 07/27/2016 33.7 <2 <2 <5 <0.5 <5 <1 <1 <3 <20 08/16/2017 488 <0.2 3.59 1.96 <5 <0.5 <5 <1 <1 3.30 <20 Cations reported as mg/L.All other metals reported as ug/L. Site: ACMW-21 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2017 Depth Water Temp Alk Hard Turb Total P TKN NH3-N NO2-N NO3-N Total N Date ft Level C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L mg/L 02/15/2017 13.79 4997.54 10.0 6.16 43.4 0.065 0.100 < 0.020 < 0.010 2.640 2.740 05/09/2017 7.51 5003.82 8.7 6.14 31.7 0.063. < 0.100 < 0.020 < 0.030 1.280 1.360 08/16/2017 7.08 5004.25 11.6 6.12 43.7 0.076 < 0.100 0.022 < 0.010 0.803 0.735 11/08/2017 11.20 5000.13 12.1 6.14 39.7 0.060 < 0.075 < 0.020 < 0.010 4.410. 4.270 Maximum 13.79 5004.25 12.1 6.16 43.7 0.076 0.100 0.022 < 0.030 4.410 4.270 Minimum 7.08 4997.54 8.7 6.12 31.7 .0.060 < 0.075 < 0.020 < 0.010 0.803 0.735 Average 9.90 5001.44 10.6 6.14 39.6 0.066 0.094 0.021 < 0.015 2.283 2.276 #Tests 4 4 4 4 4 0 0 4 4 4 4 4 4 Site: ACMW-21 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA -2017 Total Fecal/ Fecal TDS EC Chloride COD SO4 Color Coli E.coli Strep Date mg/L umhos mg/L mg/L mg/L Units MPN MPN MPN Comments 02/15/2017 110 141 6.78 4.31 < 1 < 1 y 05/09/2017 78 108 6.90 -3.19 6.3. 1 08/16/2017 92 129 9.53 2.16 1 < 1 11/08/2017 159 246 32.40 6.39 1 < 1 Maximum 159 246 32.40 6.39 6.3 1 Minimum 78 108 6.78 2.16 < 1 < 1 Average 110 156 13.90 4.01 2.3 1.0 #Tests 4 4 4 0 4 0 4 4 0 Site: ACMW-21 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA From: 2012 To: 2017 Depth Water Temp Alk Hard Turb Total P TKN NH3-N NO2-N NO3-N Total N Year ft Level C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L mg/L 12 13.4 4997.9 10.4 6.13 37.4 2.30 0.031 0.113 0.024 < 0.022 2.065 2.201 13 14.9 4997.0 10.1 6.29 34.2 0.047 0.099 0.025 < 0.016 1.003 1.124 14 13.3 4998.0 9.2 6.45 38.1 0.042 0.124 0.021 < 0.013 1.033 1.491 15 17.7 4993.6 10.1 6.30 41.5 0.053 0.081 < 0.020 0.018 1.320 1.391 16 13.7 4997.6 10.9 6.29 38.1 0.063 < 0.063 < 0.020 < 0.015 0.865 0.860 17 9.9 5001-A 10.6 6.14 39.6 0.066 0.094 0.021 < 0.015 2.283 2.276 Maximum 17.7 5001.4 10.9 6.45 41.5 2.30 0.066 0.124 0.025 0.022 2.283 2.276 Minimum 9.9 4993.6 9.2 6.13 34.2 2.30 0.031 0.063 0.020 0.013 0.865 0.860 Average 13.8 4997.6 10.2 6.26 38.1 2.30 0.050 0.096 0.022 0.017 1.428 1.557 #Tests 6 6 6 6 6 0 1 6 6 6 6 6 6 Site: ACMW-21 SOUTH TAHOE PUBLIC UTILITY DISTRICT .PINE COUNTY GROUNDWATER QUALITY DA From 2012 To: 2017 Total Fecal/ Fecal TDS EC Chloride COD SO4 Color Coli E.coli Strep Year mg/L umhos mg/L mg/L mg/L Units MPN MPN MPN Comments 12' 99 143 12.1- 5.76 6 < 1 13 83 114 8.2 4.16 1 < 1 14 84 119 7.6 4.06 1 < 1 15 96 135 7.4 4.94 < 1 < 1 16 83 113 5.9 3.88 < 1 < 1 17 110 156 13.9 -4.01 2 1 Maximum 110 156 13.9 5.76 6 -1 Minimum 83 113 5.9 3.88 1 < 1 Average 92 130 9.2 4.47 2 1 #Tests 6 6 6 0 6 0 6 6 0 Site ACMW 21 , Nitrate-Nitrogen &Water Level Chlorides 10 T 5000 50 8 4998 40 g 4996 d 30 J L 4 4994 20 2 4992 10 p 4990 p _ 12 13 14 15 16 17 12 13 14 15 16 17 —�—Nitrate Water Level Linear(Nitrate) Chloride Total Dissolved Solids (TDS) Total Phosphorus 500 0.50 400 0.40 300 0.30 200 0.20 100 0.10 0 0.00 12 13 14 15 16 17 12 13 14 15 16 17 —}—TDS ---*.—Total P Annual Metals Report AC M W-21 River Ranch Rd Ca Mg K Na Al As Ba Be Ag Cd Cr Cu ACMW-21 06/20/2012 5.69 1.5 1.57 11.9 110 <1 20 <1 <10 <0.5 <1 <20 06/11/2013 4.91 1.23 1.32 8.66 07/08/2014 7.09 1.98 1.57 10.1 22.1 <1 19.4 <1 <0.5 <0.5 <1 <2 08/18/2015 12.5 3.53 2.14 14.7 <20 <1 37.3 <1 <0.5 <0.5 <1 <2 07/27/2016 7.78 2.20 1.84 12.3 55.0 <1 23.4 <1 <0.5 <0.5 <1 <2 08/16/2017 8.55 2.31 2.02 12.6 <20 <1 26.3 <1 <0.5' <0.5 <1 <2 Fe Hg Mn Mo Ni Pb Se Sb TI V Zn ACMW-21 06/20/2012 89.4 <0.2 <20 3.08 <5 <2.5 <5 <1 <1 <3 <10 07/08/2014 29.8 <0.2 <2 3.97 <5 <0.5 <5 <1 <1 <3 <20 08/18/2015 <20 <0.2 <2 2.91 <5 <0.5 <5 <1 <1 <3 <20 07/27/2016 27.3 <2 2.95 <5 <0.5 <5 <1 <1 <3 <20 08/16/2017 <20 <0.2 <2 2.78 <5 <0.5 <5 <1 <1 <3 <20 Cations reported as mg/L.All other metals reported as ug/L. Site: ACMW-22 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2017 Depth Water Temp Alk Hard Turb Total P TKN NH3-N NO2-N NO3-N Total N Date ft Level C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L mg/L 02/15/2017 21.58 4997.70 12.0 5.98 38.2 0.021 0.090 < 0.020 < 0.020 3.11 3.200- 05/09/2017 16.93 5002.35 13.2 5.90 35.6 0.023 < 0.100 < 0.020 < 0.040 4.15 4.170 08/16/2017 23.19 '4996.09 . 12.7 6.07 36.3 0.020 < 0.110 0.020 < 0.040 2.01 2.000 11/08/2017 29-.02 4990.26 12.6 5.81 37.7 0.018 < 0.075 < 0.020 < 0.030 1.87 1.730 Maximum 29.02 5002.35 13.2 6.07 38.2 0.023 < 0.110 0.020 < 0.040 4.15 4.170 Minimum 16.93 4990.26 12.0 5.81 35.6 0.018 < 0.075 < 0.020 < 0.020 1.87 1.730 Average 22.68 4996.60 12.6 5.94 37.0 0.021 0.094 < 0.020 < 0.033 2.79 2.775 #Tests 4 4 4 4 4 0 0 4 4 4 4 4 4 Site: ACMW-22 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2017 Total Fecal/ Fecal TDS EC Chloride COD SO4 Color Coli E.coli Strep Date mg/L umhos mg/L mg/L mg/L Units MPN MPN MPN Comments 02/15/2017 110 120 3.83 1.85 < 1 < 1 05/09/2017 93 116 2.59 < 2.00 < 1 < 1 08/16/2017 84 99 < 2.00 2.07 < 1 < 1 11/08/2017 74 104 1.80 2.16 178.5 < 1 Maximum 110 120 3.83 2.16 178.5 < 1 Minimum 74 98.5 1.80 1.85 < 1 < 1 Average 90 110 2.56 2.02 45.4 < 1.0 #Tests 4 4 4 0 4 0 4 4 0 Site: ACMW-22 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA From: 2012 To: 2017 Depth Water Temp Alk Hard Turb Total P TKN NH3-N NO2-N NO3-N Total N Year ft Level C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L mg/L 12 30.5 4988.8 10.1- 6.28 31.2 2.60 0.026 0.057 0.028 < 0.010 0.58 0.646 13 32.5 4986.7 10.9 6.18 34.0 0.062 0.057 0.027 < 0.019 .1.61 1.365 14 32.6 4986.7 11.9 6.24 36.7 .0.017 0.102 0.023 < 0.019 2.02 2.053 15 33.3 4986.0 11.8 6.15 37.4 0.017 0.072 < 0.020 < 0.020 2.36 2.413 16 30.0 4989.31 13.1 6.14 38.8 0.017 0.128 < 0.020 < 0.025 2.62 2.650 17 22.7 4996.6 12.6 5.94 37.0 0.021 0.09.4 < 0.020 < 0.033 2.79 2.775 Maximum 33.3 4996.6 13.1 6.28 38.8 2.60 0.062 0.128 0.028 0.033 2.79 2.775 Minimum 22.7 4986.0 10.1 5.94 31.2 2.60 0.017 0.057 0.020 0.010 0.58 0.646 Average 30.2 4989.0 11.7 6.16 35.8 2.60 0.027 0.085 0.023 0.021 2.00 1.984 #Tests 6 6 6 6 6 0 . 1 6 6 6 6 6 6 Site: ACMW-22 SOUTH TAHOE PUBLIC UTILITY DISTRICT ,PINE COUNTY GROUNDWATER QUALITY DA From 2012 To: 2017 Total Fecal/ Fecal TDS EC Chloride COD SO4 Color Coli E.coli Strep Year mg/L umhos mg/L mg/L mg/L Units MPN MPN MPN Comments 12 63 73 1.12 4.10 < 1 < 1 13 75 94 . 2.86 1.81 < 1 < 1 14 81 106 3.89 1.72- 1 < 1 15 84 118 4.15 1.68 4 < 1 16 86 118 3.79 1.77 1 < 1 17 90 110 .2.56 2.02 45 < 1 Maximum 90- 118 4.15 4.10 45 1 Minimum 63 73 1.12 1.68 < 1 < 1 Average 80 103 3.06 2.18 9 1 #Tests 6 6 6 0 6 0 6 6 0 Site AGMW 22 Nitrate-Nitrogen &Water Level Chlorides 10 5000 50 $ 4995 40 6 4990 d 30 J d j J L 4 4985 £ 20 2 4980 10 Q 4975 Q 12 13 14 15 16 17 12 13 14 15 16 17 —*—Nitrate- ---*—Water Level Linear(Nitrate) ---�—Chloride Total Dissolved Solids (TDS) Total Phosphorus 500 0.50 400 0.40 300 0.30 _! _! Cf aI E E 200 0.20 100 0.10 0 0.00 12 13 14 15 16 17 12 13 14 15 16 17 -�—TDS 'Total P Annual Metals Report ACMW-22 Fredericksburg Ln Ca Mg K Na Al As Ba Be Ag Cd Cr Cu ACMW-22 06/20/2012 7.18 1.6 2.06 4.13 127 <1 16.9 <1 <10 <0.5 <1 <20 06/11/2013 8.95 1.57 2.34 4.66 07/08/2014 10.9 2.49 2.57 5.43 <20 <1 27.2 <1 <0.5 <0.5 <1 <2 08/18/2015 10.6 2.49 2.33 5.11 <20 <1 26.6 <1 <0.5 <0.5 <1 <2 07/27/2016 11.3 2.66 2.64 5.6 <20 <1 26.4 <1 <0.5 <0.5 <1 <2 08/16/2017 9.64 2.20 2.32 4.96 <20 <1 23.6 <1 <0.5 <0.5 <1 <2 Fe Hg Mn Mo Ni Pb Se Sb TI V Zn ACMW-22 06/20/2012 127 <0.2 <20 <2 <5 <2.5 <5 <1 <1 <3 <10 07/08/2014 <20 <0.2 <2 <2 <5 <0.5 <5 <1 <1 <3 <20 08/18/2015 <20 <0.2 <2 <2 <5 <0.5 <5 <1 <1 <3 <20 07/27/2016 <20 <2 <2 <5 <0.5 <5 <1 <1 <3 <20 08/16/2017 <20 <0.2 <2 <2 <5 <0.5 <5 <1 <1 <3 <20 Cations reported as mg/L.All other metals reported as ug/L. Site: ACMW-23 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2017 Depth Water Temp Alk Hard Turb- Total P TKN NH3-N NO2-N NO3-N Total N Date ft Level C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L mg/L 02/15/2017 Inaccessible 05/09/2017 16.17 4962.18 15.7 7.62 172 0.055 < 0.100 < 0.020 < 0.010 1.02 1.010 08/16/2017 17.89 4960.46- 16.1 7.20 173 0.036 <, 0.100 0.022 < 0.020 1.03 1.010 11/08/2017 18.58 4959.77 14.4 7.13 173 0.037 < 0.075 < 0.020 < 0.020 1.03 0.953 Maximum 18.58 4962.18 16.1 7.62 173 0.055 < 0.100 0.022 < 0.020 1.03 1.0.10 Minimum 16.17 4959.77 14.4 7.13 172 0.036 < 0.075 < 0.020 < 0.010 1.02 0.953 Average 17.55 4960.80 15.4 7.32 173 0.043 < 0.092 0.021 < 0.017 1.03 0.991 #Tests 3 3 3 3 3 0 0 3 3 3 3 3 3 Site: ACMW-23 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2017 Total Fecal/ Fecal TDS EC Chloride COD SO4 Color Coli E.coli Strep Date mg/L umhos mg/L mg/L mg/L Units MPN MPN MPN Comments 02/15/2017 Road washed out due to rains 05/09/2017 287 355' 4.21 19.7 < 1 < 1 08/16/2017 245 374 4.40 19.2 < 1 < 1 11/08/2017 255 382 4.38 19.1 < 1 < 1 Maximum 287 382 4.40 19.7 < 1 < 1 Minimum 245 355 4.21 19.1 < 1 < 1 Average 262 370 4.33 19.3 < 1.0 < 1.0 #Tests 3 3 3 0 3 0 3 3 0 Site: . ACMW-23 SOUTH TAHOEPUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA From: 2012 To: 2017 Depth Water Temp Alk Hard Turb Total P TKN NH3-N NO2-N NO3-N Total N Year ft Level C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L mg/L 12 18.6 4959.7 15.1 7.39 177 16.00 0.250 0.068 0.026 < 0.014 -1.06 1.142 13 18.9 4959.5 14.9 7.31 175 0.152 0.091 0.024 < 0.013 1:04 1.079 14 19'.0 4959.4 15.6 7.34 175 0.100 0.062. 0.026 < 0.010 1.00 1.010 15 21.8 4956.6 15.0 7.35 174 0.033 0.054 < 0.020 < 0.010 1.02 1.050 16 17.0 4961.3 15.6 7.29 173 0.031 < 0.063 < -0.020. < 0.010 1.02 0.976 17 17.5 4960.8 15.4- 7.32 173 0.043 < 0.092 0.021- < 0.017 .1.03 0.991 Maximum 21.8 4961.3 15.6 7.39 177 16.00 0.250 0.092 0.026 < 0.017 1.06 1.142 Minimum 17.0 4956.6 14.9 7.29 173 16.00 0.03111, 0.054 0.020 - < 0.010 1.00 0.976 Average 18.8 4959.5 15.2 7.33 175 16.00 0.101 0.072 0.023 < 0.012 1.03 1.041 #Tests 6 6 6 6 6 D 1 6 6 6 6 6 6 _Site:_ ACMW-23 SOUTH TAHOE PUBLIC UTILITY DISTRICT ,PINE COUNTY GROUNDWATER QUALITY DA From 2012 To: 2017 Total Fecal/ Fecal TDS EC Chloride COD SO4 Color Coli E.coli Strep Year mg/L umhos mg/L mg/L mg/L Units MPN MPN MPN Comments 12 269 378 4.22 17.8 1 < 1 1'3 271 379 4.15 19.7 1 < 1 14 271 379 4.23 19.8 1 < 1 15 273 384 4.14 19.2 9 < 1 16 266 373 4.22 19.8 1 < 1 17 262 370 4.33 19.3 < 1 < 1 Maximum 273 384 4:33 19.8 9 1 Minimum 262 370 4.14 17.8 1 < 1 Average 269 377 4.21 19.3 2 < 1 #Tests 6 6 6 0 6 0 6 6 0 Site ACMW=23 Nitrate-Nitrogen &Water Level Chlorides 10 4970 50 8 4965 40 6 4960 m 30 � J � E d E 4 4955 20 2 4950 10 0 4945 0 12 13 14 15 16 17 12 13 14 15 16 17 --*--Nitrate --E—Water Level Chloride Total Dissolved Solids (TDS) Total Phosphorus 500 0.50 400 0.40 300 0.30 J J E E 200 0.20 100 0.10 0 0.00 12 13 14 15 16 17 12 13 14 15 16 17 —�—TDS Total P Annual Metals Report ACMW-23 Scott Brooke's Ranch by Irrigation`Ditch Ca Mg K Na Al As Ba Be Ag Cd Cr Cu ACMW-23 06/20/2012 '31.4 12.6 4.47 33.1 582 2.58 90.4 <1 <10 <0.5 1.16 <20 06/11/2013 30.0 13.2 5.38 32.2 07/08/2014 33.8 17.3 6.79 31.8 6630 <10 122 <10 <5 <5 <10 20.2 08/18/2015 32.7 13.2 4.70 29.3 2430 3.54 107. <1 <0.5 <0.5 3.66 15.2 07/27/2016 30.5 14.0 4.63 31.5 1670 2.68 110 <1 <0.5 <0.5 3.47 7.54 08/16/2017 31.3 13.4 4.44 31.0 2080 3.41 119 <1 <0.5 <0.5 4.39 9.37 Fe Hg Mn MO Ni Pb Se Sb TI V Zn ACMW-23 06/20/2012 1020 <0.2 <20 2.4 <5 <2.5 <5 <1 <1 13 <10 07/08/2014 12700 <0.2 220 <20 <50 <5 <50 <10 <10 38.6 <200 08/18/2015 4990 <0.2 99.3 2.54 <5 0.830 <5 <1 <1 22.4 <20 07/27/2016 3610 59.6 2.04 <5 <0.5 <5 <1 <1 16.4 <20 08/16/2017 3810 <0.2 74.4 2.28 <5 <0.5 <5 <1 <1 19.5 <20 Cations reported as mg/L.All other metals reported as ug/L. Site: ACMW-24 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2017 Depth Water Temp Alk Hard Turb Total P TKN NH3-N NO2-N NO3-N Total N Date ft Level C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L mg/L 02/15/2017 Inaccessible 05/09/2017 -23.05 4930.20 14.1 6.74 167 0.069 < 0.100 < 0.020 < 0.020 2.04 2.110 08/16/2017 21.63 4931.62 13.4 6.47 166 0.076 < 0.110 < 0.020 < 0.020 1.98 2.030 11/08/2017 25.20 4928.05 13.2 6.44 173 0.074 < 0.075 < 0.020 - < 0.020 1.50 1.480 e Maximum 25.20 4931.62 14.1 6.74 173 0.076 < 0.110 < 0.020 < 0.020 2.04 2.110 Minimum 21.63 4928.05 13.2 6.44 166 0.069 < 0.075 < 0.020 < 0.020 1.50 1.480 Average 23.29 4929.96 13.6 6.55 169 0.073 < 0.095 < 0.020 < 0.020 1.84 1.873 #Tests 3 3 3 3 3 0 0 3 3 3 3 3 3 Site: ACMW-24 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE-COUNTY GROUNDWATER QUALITY DATA 2017 Total Fecal/ Fecal TDS EC Chloride COD SO4 Color. Coli- E.coli Strep Date mg/L umhos mg/L mg/L mg/L Units MPN MPN MPN Comments 02/15/2017 Road washed out-due to rains 05/09/2017 455 718 111.0 37.0 < 1 < 1 08/16/2017 407 639 77.5 30.1 7.4 7.4 11/08/2017. 420 666 77.1 31.3 < 1 < 1 Maximum 455 718 111.0 37.0 7.4 7.4 Minimum 407 639 77.1 30.1 < 1 < . 1 Average 427 674 88.5 32.8 3.1 3.1 #Tests 3 3 3 0 3 0 3. 3 0 Site: ACMW-24 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA From: 2012 To: 2017 Depth Water Temp Alk Hard Turb Total P TKN NH3-N NO2-N NO3-N Total N Year ft Level C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L mg/L 12 24.4 4928.9 13.0 6.64 168 12.00 0.268 , 0.166 0.028 0.025 2.11 2.298 13 . 25.4 4927.9 13.5 6.59 165 0.127 0.124 0.024 < 0.019 2.09 2.171 14 25.2 4928.0 13.9 6.62 162 0.200 0.128 0.025 < 0.018 2.18 2.283 15 . 25.3 4927.9 13.7 6.58 155 0.080 0.079 < 0.020 0.018 1.91 1.975 16 24.5 4928.7 13.9 . 6.49 160 0.076 0.145 < 0.020 - < 0.020 1.63 1.745 17 23.3 4930.0 13.6 6.55 169 0.073 < 0.095 < . 0.020 . < 0.020 1.84 1.873 Maximum 25.4 4930.0 13:9 6.64 169 12.00 0.268 0.166 0.028 0.025 2.18 2.298 Minimum 23.3 4927.9 13.0, 6.49 155 12.00 0.073 0.079 0.020 0.018 1.63 1.745 Average 24.7 4928.6 13.6 6.58 163 12.00 0.137 0.123 0.023- 0.020 1.96 2.058 #Tests 6 6 6 6 6 0 1 6 6 6 6 6 6 Site: ACMW-24 SOUTH TAHOE PUBLIC UTILITY DISTRICT ,PINE COUNTY GROUNDWATER QUALITY DA From 2012 To: 2017 Total Fecal/ Fecal TDS EC Chloride COD SO4 Color Coli E.coli Strep Year mg/L umhos mg/L mg/L mg/L Units MPN MPN MPN Comments 12 334 523 39.1 38.4 .2 < 1 13 342 535 46.6 31.3 1 < 1 14 352 552 55.1 28.8 < 1 < 1 15 345 531 49.1 - 31.1 < 1 < 1 16 354 563 62.9 26.8 < 1 < 1 17 427 674 88.5 32.8 3 3 Maximum 427 674 88.5 38.4 3 3 Minimum 334 523 39.1 26.8 1 1 Average 359 563 56.9 31.5 1 1 #Tests 6 6 6 0 6 0 6 6 0 Site- ACMW -24 Nitrate-Nitrogen &Water Level Chlorides 10 4940_ 100 90 8 4935 80 70 6- 4930 60 J L rn 50 E E 4 4925 40 30 2 4920 20 10 0 4915 0 12 13 14 15 16 17 12 13 14 15 16 17 t Nitrate --;—Water Level Linear(Nitrate) ---�—Chloride Total Dissolved Solids (TDS) Total Phosphorus 500 0.50 400 0.40 300 0.30 J J E E 200 0.20 100 0.10 0 0.00 12 13 14 15 16 17 12 13 14 15 16 17 --�—TDS ---*---Total P Annual Metals Report AC M W-24 Scott Brooke's Ranch by Irrigation Ditch Ca Mg K Na Al As Ba Be Ag Cd Cr Cu ACMW-24 06/20/2012 46.1 19 4.04 39.4 719 2.32 121 <1 <10 <0.5 <1 <20 06/11/2013 43.8 18.4 3.64 37.9 07/08/2014 52.0 26.0 5.12 42.3 4200 6.38 264 <2 <1 <1 4.52 6.02 08/18/2015 44.2 19.1 3.39 38.0 40.4 1.46 190 <1 <0.5 <0.5 <1 <2 07/27/2016 47.6 21.9 4.34 45.2 1420 2.09 208 <1 <0.5 <0.5 11.3 3.20 08/16/2017 52.7 23.5 4.10 44.8 2110 2.58 228 <1 <0.5 <0.5 2.30 3.39 Fe Hg Mn MO Ni Pb Se Sb TI V Zn ACMW-24 06/20/2012 874 <0.2 89 <2 <5 <2.5 <5 <1 <1 10.6 <10 07/08/2014 4760 <0.2 181 <4 <10 1.30 <10 <2 <2 23.9 <40 08/18/2015 180 <0.2 4.56 <2 <5 <0.5 <5 <1 <1 8.77 <20 07/27/2016 1940 67.9 <2 <5 . <0.5 <5 <1 <1 13.8 <20 08/16/2017 2590 <0.2 82.5 <2 <5 0.559 <5 <1 <1 15.7 <20 Cations reported as mg/L.All other metals reported as ug/L. Site: ACMW-25 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2017 Depth Water Temp.- Alk Hard Turb Total P TKN NH3-N NO2-N NO3-N Total N Date ft Level C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L mg/L 02/15/2017 6.07 4936.17 9.9 6.64 39.2 0.041 0.220 < 0.020 < 0.020 4.02 4.240 05/09/2017 6.00 4936.24 12.5 6.40 48.2 0.045 0.150 < 0.020 < 0.030 2.55 2.700 08/16/2017 7.77 4934.47 16.1 6.17 51.0 0.053 0.200 0.020 < 0.030 3.30 3.500 11/08/2017 8.83 4933.41 15.1 6.13 54.2 0.052 < 0.075 < 0.020 < 0.030 2.69 2.680 Maximum 8.83 4936.24 16..1 6.64 54.2 0.053 0.220 0.020 < 0.030 4.02 4.240 Minimum 6.00 4933.41 9.9 6.13 39.2 0.041 < 0.075 < 0.020' < 0.020 2.55 2.680 Average 7.17 4935.07 13.4 6.34 48.2 0.048 0.161 < 0.020 < 0.028 3.14 3.280 #Tests 4 4 4 4 4 0 0 4 4 4 4 4 4 Site: ACMW-25 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2017 Total Fecal/ Fecal. TDS EC Chloride COD. SO4 Color Coli E.coli Strep Date mg/L umhos mg/L mg/L mg/L Units MPN MPN MPN Comments 02/15/201 T 137 182 12.10 10.10 3:1 < 1 05/09/2017 130 175 13.10 7.43 62.0 < 1 08/16/2017 139 179 9.98 7.14 9.7 < 1 11/08/2017 130 178 8.43 7.71 1.0 < 1 Maximum 139 182 13.10 10.10 62.0 < 1 Minimum 130 175 8.43- 7.14 1.0 < 1 Average 134 179 10.90 8.10 19.0 < 1.0 #Tests 4 4 4 0 4 0 4 4 0 Site: ACMW-25 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA From: 2012 To: 2017 Depth_ Water Temp Alk Hard Turb Total P TKN NH3-N NO2-N NO3-N Total N Year ft Level C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L mg/L 12 8.7 4933.5 13.8 6.41 47.7 0.38 0.049 0.137 0.025 < 0.040 3.13 3.303 13- 8.8 4933.4 13.4 6.30 47.8 -- 0.078 0.053 0.026 0.025 1.98 2.056 14 9.5 .4932.8 13.2 6.38 46.7 0.053 0.124 0.023 < 0.018 1.68 1.897 15 .9.8 4932.4 14.0 6.32 44.3 0.047 0.073 < 0.020 < 0.018 1.50 1.553 16 8.7 4933.5 14.0 6.27 45.1 -0.043 0.235 < 0.020 < 0.020 3.59 3.828 17 7.2 4935.1 13.4 6.34 48.2 0.048 0.161 < 0.020 < 0.028 3.14 3.280 Maximum 9.8 4935.1 14.0 6.41 48.2 0.38 0.078 0.235 0.026 0.040 3.59 3.828 Minimum 7.2 4932.4 13.2 6.27 44.3 0.38 0.043 0.053 0.020 0.018 1.50 1.553 Average 8.8 4933.5 13.6 6.34 46.6 0.38 0.053 . 0.131 0.022 0.025 2.50 2.653 . #Tests 6 6 6 6 6 0 1 6 6 6 6 6 6 a Site: ACMW-25 SOUTH TAHOE PUBLIC UTILITY DISTRICT ,PINE COUNTY GROUNDWATER QUALITY DA From 2012 To: 2017 Total Fecal/ Fecal TDS EC Chloride COD SO4 . Color Coli E.coli Strep Year mg/L umhos mg/L mg/L mg/L Units MPN MPN MPN Comments 12 125 163 9.0 6.46 3 < 1 13 121 159 10.1 . 6.51 1 < 1 14 119 158 10.9 7.23 2 < 1 15 111 150 9.6 5.54 < 1 < 1 16 124 182 12.5 6.26 2 2 17 134 179 10.9 8.10 19 < 1 Maximum 134 182 12.5 8.10 19 2 Minimum 111 150 9.0 5.54 1 1 Average 122 165 10.5 6.68 4 1 #Tests 6 6 6 0 6 0 6 6 0 Site ACMW=25 Nitrate-Nitrogen &Water Level Chlorides 10 4950- 50 8 4945 40 6 4940 30 m � J � E - d 4 4935 20 2 4930 10 0 4925 0 12 13 14 15 16 17 12 13 14 15 16 17 —♦—Nitrate --.*—Water Level Linear(Nitrate) t Chloride Total Dissolved Solids (TDS) Total Phosphorus 500 0.50 400 0.40 300 0.30 E E 200 0.20 100 0.10 0 0.00 12 13 14 15 16 17 12 13 14 15 16 17 �—TDS ---*--Total P Annual Metals Report ACMW-25 cess road between Neddenriep & Brooke ranch Ca Mg K Na Al As Ba Be Ag Cd Cr Cu ACMW-25 06/20/2012 14 4.24 3.46 12 <20 <1 43.2 <1 <10 <0.5 <1 <20 06/11/2013 12.4 3.79 3.44 10.8 07/08/2014 13.6 4.63 3.26 11.9 <20 <1 40.5 <1 <0.5 <0.5 <1 2.36 08/18/2015 10.5 3.72 2.91 10.6 28.1 <1 33.0 <1 <0.5 <0.5 <1 <2 07/27/2016 12.9 4.47 3.38 12.1 <20 <1 39.6 <1 <0.5 <0.5 <1 <2 08/16/2017 13.5 4.50 3.30 11.7 <20 <1. 42.6 <1 <0.5 <0.5 1.30 <2 Fe Hg Mn Mo Ni Pb Se Sb TI V Zn ACMW-25 06/20/2012 66.4 <0.2 <20 <2 <5 <2.5 <5 <1 <1 <3 <10 07/08/2014 <20 <0.2 <2 <2 <5 <0.5 <5 <1 <1 3.02 <20 08/18/2015 20.0 <0.2 <2 <2 <5 <0.5 <5 <1 <1 <3 <20 07/27/2016 <20 <2 <2 <5 <0.5 <5 <1 <1 <3 <20 08/16/2017 220 <0.2 <2 <2 <5 <0.5 <5 <1 <1 <3 <20 Cations reported as mg/L.All other metals reported as ug/L. J Site: ACMW-26 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2017 Depth Water Temp Alk Hard Turb Total P TKN NH3-N' NO2-N NO3-N Total N Date ft Level C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L mg/L 02/15/2017 5.44 4890.16 4.9 6.79 43.8 0.172 0.340 < 0.020 < - 0.020 1.640 1.980 05/09/2017 7.17 4888.43 12.4 6.95 70.9 0.207 0.712 < 0.020 < -0.020 < 0.020 0.712 08/16/2017 7.54 -4888.06 18.8 6.42 102 0.225 0.814 0.068 < 0.010 < 0.010 0.814 11/08/2017 10.95 .4884.65 15.2 6.23 79.7 0.214 0.321 0.084 < 0.010 < 0.010 0.321 Maximum 10.95 .4890.16 18.8 6.95 102.0 0.225 0.814 0.084 < 0.020 1.640 1.980 Minimum 5.44 '4884.65 4.9 6.23 43.8 0.172 0.321 < 0.020 < 0.010 < 0.010 0.321 Average. 7.78 4887.83 12.8 6.60 74.1 0.205 0.547 0.048 < 0.015 0.420 0.957 #Tests 4 4 4 4 4 0 0 4 4 4 .4 4 4 Site:: ACMW-26 SOUTH.TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2017 Total Fecal/ Fecal TDS. EC Chloride COD SO4 Color Coli E.coli Strep Date mg/L umhos mg/L mg/L mg/L Units MPN MPN MPN Comments 02/15/2017 151 217 24.7 9.61 172.3 13.4 05/09/2017 142 188 14.3 2.54 .387.3 9.7 08/16/2017 191 255 17.4 1.12 156.5 4.1 11/08/2017 . 155 241 21.5 6.56 1.0 < 1 Maximum 191 255 24.7 9.61 387.3 13.4 Minimum 142 188 14.3 1.12 1.0 < 1 Average 160 225 19.5 4.96 179.3 7.1 #Tests 4 . 4 4 0 4 0 4 4 0 Site: ACMW-26 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA From: 2012 To: 2017 Depth Water Temp Alk Hard Turb. Total P TKN NH3-N NO2-N NO3-N Total N Year ft Level C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L mg/L 12 11.4 4884.2 12.4 6:36 62.6 - 1.00- 0.095 0.153 0.023 0.031 1.296 1.481 13 1.2.7 4882.9 13.4 6.38 65.4 0.107 0.229 0.026 0.026 1.411 2.087 14 13.8 4881.8 13:0 6.46 .60.7 0.101 0.160- 0.023 0.033 1.777 1.983 15 14.1 4881.5 12.0 6.36 57.4 0.079 0.146 < 0.020 0.020 3.533 3.675 16 12.4^- 4883.2 13.8 6.44 62.6 0.146 0.270 < 0.020 0.032 1.768 2.058 17 ' 7.8 4887.8 12.8 6.60 74.1 0.205 0.547 0.048 < 0.015 0.420 0.957 Maximum 14.1 4887.8 13.8 6.60 74.1 1.00 0.205 0.547 0.048 0.033 3.533 3.675 Minimum 7.8 4881.5 12.0 6.36 57.4 1.00 0.079 0.146 0.020 0.015 0.420 0.957 Average 12.0 , 4883.6 12.9 6.43 63.8 1.00 0.122 0.251 0.027 0.026 1.701 2.040 #Tests 6 6 6 6 6 0 1 6 6 6 6 6 6 Site: ACM_W-26 SOUTH TAHOE PUBLIC UTILITY DISTRICT ,PINE COUNTY GROUNDWATER QUALITY DA From 1989 To: 2017 Total Fecal/ Fecal TDS EC Chloride COD - -SO4 Color Coli E.coli Strep Year mg/L umhos mg/L mg/L mg/L Units MPN MPN MPN. Comments 12 137 200 16.3 6.66 7 6 13 149 219 17.0 7.94 6 3 14 150 227 -21.3 8.42 7 3 15 164 254 24.1 10.65 4 1 16 160 240 19.0 15.17 32 3 17 160 225 19.5 4.96 179 7 Maximum 164 254 24.1 15.17 1-79 7 Minimum 137 200 .16.3 4.96 4 1 Average 153 228 19.5 8.96 39 4 #Tests 6 6 6 0 6 0 6 6 0 Site ACMW=26 Nitrate-Nitrogen.-&Water Level Chlorides 10 4895 50 8 4890 40 6 -4885 30 J J E CD 4 4880 20 2 4875 10 0- 4870 0 12 13 14 15 16 17 12 13 14 15 16 17 --�—Nitrate —w—Water Level Linear(Nitrate) �—Chloride Total Dissolved Solids (TDS) Total Phosphorus 500 0.50 400 0.40 300 0.30 E E 200 - 0.20 100 0.10 0 0.00- 12 13 14 15 16 17 12 13 14. 15 16 17 —�TDS ---*.—Total P f Annual Metals Report ACMW-26 -cess road between Neddenriep & Brooke ranch Ca Mg K Na Al As Ba Be Ag Cd Cr Cu ACMW-26 06/20/2012 16.1 4.31 4.14 20.6 54.2 <1 47.9 <1 <10 <0.5 <1 <20 06/11/2013 12.8 3.43 4.25 19.3 07/08/2014 19.5 5.57 5.42 27.3 <20 <1 58.0 <1 <0.5 <0.5 <1 4.72 08/18/2015 14.0 4.28 4.03 20.3, 24.6 <1 51.2 <1 <0.5 <0.5 <1 <2 07/27/2016 15.0 4.51 5.76 21.0 <20 <1 44.7 <1 <0.5 <0.5 <1 3.27 08/16/2017 19.4 5.49 6.70 23.9 27.9 1.24 69.3 <1 <0.5 <0.5 <1 2.35 Fe Hg Mn Mo Ni Pb Se Sb TI V Zn ACMW-26 06/20/2012 54 <0.2 25.9 <2 <5 <2.5 <5 <1 <1 3.16 <10 07/08/2014 26.6 <0.2 80.0 1.99 <5 <0.5 <5 <1 <1 4.20 <20 08/18/2015 24.8 <0.2 20.7 <2 <5 <0.5 <5 <1 <1 <3 <20 07/27/2016 <20 89.4 3.85 <5 <0.5 <5 <1 <1 5.03 <20 08/16/2017 39.9 <0.2 113 2.87 <5 <0.5 <5 <1 <1 11.6 <20 Cations reported as mg/L.All other metals reported as ug/L. DIAMOND VALLEY RANCH MONITORING WELLS Site: ACMW-08N SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2017 Depth Water Temp Alk Hard Turb Total P TKN NH3-N NO2-N NO3-N Total N Date ft Level C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L mg/L 2/22/2017 2.78 5461.67 10.7 6.83 77.5 0.048 <, 0.050 < 0.020 < 0.010 0.622 0.557 5/23/2017 2.44 5462.01 13.2 7.15 83.5 0.042 < 0.090 < 0-020 < 0.010 0.680 0.605 7/27/2017 2.63 5461.82 13.0 6.92 84.3 0.053 < 0.050 0.020 < 0.010 0.688 0.622 11/14/2017 4.28 5460.17 11.4 6.99 86.9 -- 0.042 < 0.100 < 0.020 < 0.010 0.713 0.583 Maximum 4.28 5462.01 13.2 7.15 86.9 0.053 < 0.100 0.020 < 0.010 '0.713 0.622 Minimum 2.44. 5460.17 10.7 6.83. 77.5 0.042 < 0.050 < 0.020 < 0.010 0.622 0.557 Average 3.03 5461.42 12.1 6.97 83.1 0.046 < 0.073 <. 0.020 < 0.010 0.676 0.592 #Tests 4 4 4 4 4 0 0 4 4 4 4 4 4 Site: ACMW-08N SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2017 Total Coli E.coli Fecal TDS EC Chloride COD SO4 Color Chromo Chromo Strep Date mg/L umhos mg/L mg/L mg/L Units MPN MPN MPN Comments 2/22/2017 117 151 1.26 1.08 < 1 < 1 5/23/2017 130 162 1.11 . 1.06 < 1 < 1 7/27/2017 126 177 1'16 1.01 < 1 < 1 11/14/2017 129 180 1.25 1.07 1046.2 1 Maximum. 130 180 1.26 1.08 1046 < 1 Minimum 117 151 1.11 1.01 < 1 < 1 Average 126 168 1.20 1.06 262 < 1 #Tests 4 4 4 0 4 0 4 4 0 Site: ACMW-08N SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA From: 2009 To: 2017 Depth Water Temp Alk Hard Turb Total P TKN NH3-N NO2-N NO3-N Total N Year ft Level C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L mg/L 09 4.3 5460.2 11.7 6.50 62 53 0.22 0.040 < 0.050 < .0.010 0.361 0.391 10 4'1 5460.3 12.4 6.62 68 0.042 0.127 < 0.010 0.450 0.536 11 4.7 5459.8 12.0 6.90 80 0.04 0.040 < 0.058 < 0.010 0.626 0.693 12 5.7 5458.7 12.0 .7.02 81 0.08 0.044 < 0.055, < 0.020 < 0.010 0.744 0.808 13 6.3 5458.2 - 12.2 6.90 83 0.052 < 0.050 0.022 < 0.010 0.689 0.701 14 6.3. 5458.2 12.0 6.98 79 --0.039 0.074 0.025 < 0-.010 0.672 0.679 15 7.9 5456.6 12.2 .6.81 78 0.045 < 0.050 < 0.020 < 0.010 0.643 0.630 16 5.6 5458.9 12.5 6.72 76 0.044 0.067 < 0.020 < 0.01-0 0.595 0.589 17 3.0 5461.4 12.1 6.97 83 0.046 < 0.073 < 0.020 < 0.010 0.676 0.592 Maximum 7.9 5461.4 12.5 7.02 83 53 0-.22 0.052 0.127 0.025 < 0.010 0.744 0.808 Minimum 3.0 5456.6 11.7 6.50 62 53 0.04 0.039 0.050 0.020 < 0.010 0.361 0.391 Average 5.3 5459.1 12.1 6.82 77 53 0.11 0.044 0.067 0.021 < 0.010 0.606 0.624 #Tests 9 9 9 9 9 1 3 9 9 6 9 9 9 Site:'- ACMW-08N SOUTH TAHOE PUBLIC UTILITY.DISTRICT ,PINE COUNTY GROUNDWATER QUALITY DA From 1989 To: 2017 Total Fecal TDS EC Chloride' COD SO4 Color Coli E. co/i Strep Year mg/L umhos mg/L mg/L mg/L Units MPN MPN MPN Comments 09 106 142 5.46 6 1.00 3.5 < 1 First year of sampling 10 110 170 3.35. 1.25 2.5. < 1 11 120 164 0.77 1.80 5.4 < 1 12 1-30 165 0.83 1.46 < 1.0 < 1 13 125 167 0.97 1.48 23.4 < 1 14 112 162 0.91 1.17 6.4 < 1 15 120 163 1.08 1.13 147.4 < 1 16 124 152 1.16 1.07 4.4 < 1 17 126 168 1.20 1.06 262.3 < 1 Maximum 130 170 5.46 6 1.80 262.3 < 1.0 Minimum 106 142 0.77 < 6 1.00 < 1.0 < 1.0 Average 119 161 1.75 6 1.27 50.7 < 1.0 #Tests 9 9 9 1 9 0 9 9 0 Site ACMW 08N Nitrate-Nitrogen &Water Level Chlorides 5 5475 40 4 5470 30 3 5465 J E d 20 2 -5460 1 5455 10 0 5450 0 09 10 11 12 13 14 15 16 17 09 10 11 12 13 14 15 16 17 —+—Nitrate -- Water Level --*--Chloride Linear(Chloride) Total Dissolved Solids (TDS) Total Phosphorus 500 0.4 400 0.3 300 J J v� rn 0.2 E E 200 0.1 100 0 0.0 09 10 11 12 13 14 15 16 17 09 10 11 12 13 14 15 16 17 —}—TDS Linear(TDS) --*--Total P Linear(Total P) Annual Metals Report ACMW-08N Diamond Valley Ranch Ca Mg K Na Al As Ba Be Ag Cd Cr Cu ACMW-08N 06/18/2009 13.7 4.1 1.5 8.95 <20 <2 39 <1 17.2 <0.5 <1 <20 08/10/2010 15 5 1.6 9.5 <20 <1 34 <1 <0.5 <0.5 <1 <2 07/13/2011 16.7 5.8. 1.86 10.8 <20 <1 37 <1 <0.5 <0.5 <1 <2 07/26/2012 15.6 5.34 1.88 10.2 <20 <1 36.2 <1 <10 <0.5 <1 <20 0 7/10/2 013 16.1 5.60 1.78 10.1 07/09/2014 16.0 5.46 1.91 10.5 <20 <1 38.2 <1 <0.5 <0.5 <1 <2 08/19/2015 14.8 5.25 1.64 9.81 <20 <1 36.6 <1 <0.5 <0.5 <1 <2 08/10/2016 14.8 5.21 1.70 9.83 <20 <1 33.8 <1 <0.5 <0.5 <1 <2 07/27/2017 15.7 5.37 1.76 10.1. <20 <1 41.2 <1 <0.5 <0.5 <1 <2 Fe Hg Mn Mo Ni Pb Se Sb TI V Zn ACMW-08N 06/18/2009 43.5 <0.2 <20 <2 <5 <2.5 <5 <1 <1 <3 <10 08/10/2010 <20 <0.2 <2 <2 <5 <0.5 <5 <1 <1 <3 <20 07/13/2011 <20 <0.2 <2 <2 <5 <0.5 <5 <1 <1 <3 <20 07/26/2012 <50 <0.2 <20 <2 <5 <2.5 <5 <1 <1 <3 <10 07/09/2014 <20 <0.2 <2 <2 <5 <0.5 <5 <1 <1 <3 <20 08/19/2015 <20 <0.2 <2 <2 <5 <0.5 <5 <1 <1 <3 <20 08/10/2016 <20 <0.2 <2 <2 <5 <0.5 <5 <1 <1 <3 <20 07/27/2017 <20 <0.2 <2 <2 <5 <0.5 <5 <1 <1 <3 <20 Cations reported as mg/L.All other metals reported as ug/L. Site: ACMW-09D SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2017 Depth Water Temp Alk Hard Turb Total P TKN NH3-N NO2-N NO3-N Total N Date ft Level C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L mg/L 03/07/2017 19.20 5491.36 12.0 6.55 30:3 0.052. 0.350 < 0.020 < 0.040 5.340 5.69 ^� 06/08/2017 17.43 5493.13 12.5 6.32 31.2 0.047 < 0.080 < 0.020 < 0.080 3.330 3.24 08/24/2017 28.26 5482.30 13.8 6.53 33.3 0.049 < 0.100 0.037 < 0.030 1.860 1.68 11/22/2017 33.40 5477.16 12.9 6.30 33.4 0.060 < 0.090 < 0.020 < 0.030 1.800 1.71 Maximum 33.40 5493.13 13.8 6.55 33.4 0.060 0.350 0.037 < 0.080 5.340 5.690 Minimum 17.43 5477.16 12.0 6.30 30.3 0.047 < 0.080 < 0.020 < 0.030 1.800 1.680 Average 24.57 5485.99 12.8 6.43 32.1 0.052 0.155 0.024 < 0.045 3.083 3.080 #Tests 4 4 4 4 4 0 0 4 4 4. 4 4 4 Site: ACMW-09D SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2017 Total Coli E.-coli- Fecal TDS EC Chloride COD SO4 Color Chromo Chromo Strep Date mg/L umhos mg/L mg/L mg/L Units MPN MPN MPN Comments 03/07/2017 110 112 1.60- 3.48- 7.4 < 1 06/08/2017 95 99.1 1.72 3.97 1 < 1 08/24/2017 87 90.9 < 1.50 4.06 11.9 < 1 11/22/2017 88 86 < 1.50 2.69 686.7 < 1 , Maximum 110 112 1.72 4.06 687 < 1 Minimum 87 86 < 1.50 2.69 1 < 1 Average 95 97 1.58 3.55 177 < 1 #Tests 4 4 4 0 4 .0 4 4 0 Site: ACMW-09D SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA From: 2009 To: 2017 Depth Water Temp Alk Hard Turb Total P TKN NH3-N NO2-N NO3-N Total N Year ft Level C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L mg/L 09 27.4 5483.2 - 13.1 6.37 32 25 4.43 0.059 0.052 < 0.010 0.865 0.808 10 30.1 5478.7 12.9 6.22 33 0.058 <. 0.050 < 0.010 0.870 0:920 11 34.3 5476.2 12.2 6.32 34 0.83 0.057 0.100 < 0:015 1.077 1.167 12 38.7 5471.9 13.1 6.68 32 1.60 0.107 0.121 0.020 < 0.010 0.750 0.880 13 35.4 5475.2 12.7 6.36 32 0.067 < 0.050 0.022 < 0.010 0.701 0.661 14 32.8 5477.7 13.2 6.57 32 0.067 0.060 0.027 < 0.010 0.716 0.722 15 36.9 5473.6 13.3 6.43 31 0.058 < 0.050 < 0.020 < 0.010 0.882 0.741 16 31.5 5479.1 12.6 6.31 33 0.059 < 0.078 < 0.020 < 0.010 0.968 0.798 17 24.6 5486.0 12.8 6.43 32 0.052 0.155 0.024 < 0.045 3.083 3.080 Maximum 38.7 5486.0 13.3 6.68 34 25 4.43 0.107 0.155 0.027 < 0.045 3.083 3.080 Minimum 24.6 5471.9 12.2 6.22 31 25 0.83 0.052 < 0.050 0.020 < 0.010 0.701 0.661- Average 32.4 5478.0 12.9 6.41 32 25 2.29 0.065 0.079 0.022 < 0.014 1.101 1.086 #Tests 9 9 9 9 9 1 3 9 9 6 9 9 9 Site: ACMW-09D SOUTH TAHOE PUBLIC UTILITY DISTRICT ,PINE COUNTY GROUNDWATER QUALITY DA From 1989 To: 2017 Total Fecal TDS EC Chloride COD SO4 Color Coli E.coli Strep Year mg/L umhos mg/L mg/L mg/L Units MPN MPN MPN Comments 09 81 79 1.37 < 5 2.29 5.0- 2.8 .First year of sampling 10 79 81 1.28 2.59 5.2 2.3 11 84 85 1.61 2.78 < 1.0 < 1.0 12 87 79 1.39 2.83 < 1:0 < 1.0 13 83 76 1.35 3.26 < 1.0 < 1.0 14 80 76 1.41 3.57 < 1.0 < 1.0 15 82 81 1.41 3.56 < 1.0 < 1.0 16 83 79 1.48 3.45 130.1 < 1.0 17 95 97 1.58 3.55 176.8 < 1.0 Maximum 95 97 1.61 5 3.57 176.8 2.8 Minimum 79 76 1.28 < 5 2.29 < 1.0 < 1.0 Average 84 82 1.43 5 3.10 35.8 1.3 #Tests 9 9 9 1 9 0 9 9 0 Site ACMW=09D ,- -. Nitrate-Nitrogen &Water Level Chlorides 5 5490 50 4 5485 40 3 5480 30 J E `m E 2 5475 20 5470 10 0 5465 0 09 10 11 12 13 14 15 16 17 09 10 11 12 13 14 15 16 17 --♦—Nitrate ---w—Water Level Linear(Nitrate) ---*--Chloride Linear(Chloride) Total Dissolved Solids(TDS) Total Phosphorus 500 0.4 400 0.3 300 J J rn 0.2 E E 200 0.1 100 0 0.0 09 10 11 12 13 14 15 16 17 09 10 11 12 13 14 15 16 17 ---*--TDS Linear(TDS) —•--Total P Linear(Total P) , Annual Metals Report ACMW-09D Diamond Valley Ranch Ca Mg K Na Al As Ba Be Ag Cd Cr Cu ACMW-09D 06/18/2009 6.2 1.7 0.951 6.48 760 2.48 27 <1 16.6 <0.5 <1 <20 07/08/2010 7:3 2 <1 6.8 570 <1 28 <1 <0.5 <0.5 <1 <2 07/13/2011 6.85 1.78 1 7.89 132 <1 23.4 <1 <0.5 <0.5 <1 <2 07/26/2012 6.16 1.17 0.91 7.54 79.6 <1 21.3 <1 <10 <0.5 <1 <20 08/01/2014 6.34 .1.74 <1 7.15 105 1.74 21.2 <1 <0.5 <0.5 <1 <2 06/11/2015 6.30 1.70 1.12 7.74 102 1.95 16.4 <1 <0.5 <0.5 <1 <2 08/16/2016 6.22 1.69 <1 7.68 95.8 1.01 21.1 <1 <0.5 0.671 <1 <2 06/08/2017 7.85 2.17 <1 7.11 106 <1. 24.4 <1 <0.5 <0.5 <1 <2 Fe Hg Mn MO Ni Pb Se Sb. TI V Zn ACMW-09D 06/18/2009 632 <0.2 <20 <2 <5 <2.5 <5 <1 <1 <3 14.5 07/08/2010 690 <0.2 14 <2 <5 0.54 <5 <1 <1 <3 <20 07/13/2011 85.1 <0.2 <2 <2 <5 <0.5 <5 <1 <1 <3 <20 07/26/2012 170 <0.2 <20 <2 <5 <2.5 <5 <1 <1 <3 <10 08/01/2014 296 <0.2 5.62 <2 <5 <0.5 <5 <1 <1 <3 <20 06/11/2015 231 <0.2 <2 <2 <5 <0.5 <5 <1 <.1 <3 <20 08/16/2016 35.4 <0.2 <2 <2. <5. 0.618 <5 <1 <1 <3 <20 06/08/2017 46.1 <0.2 <2 <2 <5 <0.5 <5 <1 <1 <3 <20 Cations reported as mg/L.All other metals reported as ug/L. Site: ACMW-10 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA -2017 Depth Water Temp Alk Hard Turb Total P TKN NH3-N NO2-N NO3-N Total N Date ft Level C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L Mg/L 03/07/2017 20.22 5513.97 11.7 6.76 85.3 0.044 < 0.050 < 0.020- < 0.010 0.631 0.583 06/08/2017 24.38 5509.81 11.3 6.51 74.7 0.037 < 0.080 < 0.020- < 0.010 0.333 0.281 08/24/2017 28.95 5505.24 12.6 6.64 74.4 0.037 < 0.100 .0:029 < 0.010 0.351 0.276 11/22/2017 31.28 5502.91 13.4 6.29 - 72.9 0.042 < 0.090 < 0.020 < 0.010 0.452 0.366 Maximum 31.28 5513.97 13.4 6.76 85.3 0.044 < 0.100 0.029 < 0.010 0.631 0.583 Minimum 20.22 5502.91 11.3 6.29 72.9 0.037 < 0.050 < 0.020 < 0.010 0.333 0.276 Average 26.21 5507.98 12.3 6.55 76.8 0.040 < 0.080 0.022 < 0.010 0.442 0.377 #Tests 4 4 4.0 4 4.0 0 0 4 4 4 4 4 4 Site: ACMW-10 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2017 Total Coli E. coli Fecal TDS EC Chloride COD SO4 Color Chromo Chromo Strep Date' mg/L umhos mg/L mg/L mg/L Units MPN -MPN - MPN Comments 03/07/2017 143 184 4.19 3.42 < 1 < 1 06/08/2017 74 162 3.65 4.04 < 1 < 1 08/24/2017 122 165 4.65 5.31 < 1 < 1 11/22/2017 126 160 5.53 5.36 < 1 < 1 Maximum 143 184 5.53 5.36 < 1.0 < 1.0 Minimum 74 160 3.65 3.42 < 1.0 < 1.0 Average 116 168 4.51 4.-53 < 1.0 < 1.0 #Tests 4 4 4 0 4 0 4 4 0 Site: ACMW-10 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA From: 2009 To: 2017- Depth Water Temp Alk Hard Turb Total P TKN NH3-N NO2-N NO3-N Total N- Year ft Level C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L mg/L 09 26.1 5508.1 11.8 6.46 113 100 1.51 0.044 < 0.050 < 0.010 0.141 0.171 10 25.7 5505.9 12.1 6.39 97 0.046 < 0.050 < 0.010 0.148 0.198 11 30.0 5504.2 10.8 6.52 85 0.044 < 0.050 < 0.010 0.145 0.218 12 34.3 5499.9 12.7 6.47 91 1.20 0.21-2 0.122 < 0.020 < 0.010 0.113 0.245 13 31.4 5502.8 12.0 6.43 82 0.035 0.056 < 0.020 < 0.010 0.150 0.156 14 30.7 5503.4- 12.6 6.53- 72 0.040 0.079 0.030 < 0.010 0.231 0.280 15 33.4 5500.8 13.1 6.36 76 0.040 < 0.050 < 0.020 < 0.010 0.260 0.257 16 29.1 5505.1 12.8 6.34 74 0.039 < 0.078- < 0.020 < 0.010 0.798 0.784 17 26.2 5508.0 12.3 6.55 77 0.040 < 0.080- - 0.022 < 0.010 0.442 0.377 Maximum 34.3 5508.1 13.1 6.55 113 100 1.51 0.212 0.122 0.030 < 0.010 0.798 0.784 Minimum 25.7 5499.9 10.8 6.34 72 100 1-.20 0.035 < 0.050 < 0.020 < 0.010 0.113 0.156 Average 29.7 5504.2 12.2 6.45 85 100 1.35 0.060 0.068 0.022 < 0.010 0.270 0.298 #Tests 9 9 9 9 9 1 2 9 9 6 9 9 9 Site: ACMW-10 SOUTH TAHOE PUBLIC UTILITY DISTRICT ,PINE COUNTY GROUNDWATER QUALITY DA From 1989 To: 2017 Total Fecal TDS EC Chloride COD SO4 Color Coli E.coli Strep Year mg/L umhos mg/L mg/L mg/L Units MPN MPN MPN Comments 09 162 248 5.28 < 5 3.42 < 1.0 < 1.0 First year of sampling 10 145 208 4.91 3.60 < 1.0 < 1.0 11 131 190 4.99 3.43 < 2.4 < 1.0 12 153 193 4.48 2.54 < 1.0 < 1.0 13 124 176 4.03 2.31 < 1.0 < 1.0 14 114 159 4.51 3.35 < 1.0 < 1.0 15 129 175 4.56 2.88 < 1.0 < 1.0 16 128 169 4-96 3.30 < 1.0 < 1.0 17 116 168 4.51 4.53 < 1.0 < 1.0 Maximum 162 248 5.28 < 5 4.53 < 2.4 < 1.0 Minimum 114 159 4.03 < 5 2.31 < 1.0---- < 1.0 Average 133 187 4.69 < 5 3.26 < 1.2 < 1.0 #Tests 9 9 9 1 9 0 9 9 0 Site AC MWm1 0 Nitrate-Nitrogen &Water Level Chlorides 1.0 5515 50 0.8 5510 40 0.6 5505 30 J d J c J d . E 0.4 5500 20 0.2 5495 10 0.0 5490 0 09 10 11 12 13 14 15 16 17 09 10 11 12 13 14 15 16 17 --*—Nitrate —.*—Water Level Linear(Nitrate) Chloride Total Dissolved Solids (TDS) Total Phosphorus 500 0.4 400 0.3 300 J J rn cm 0.2 E E 200 0 100 .1 0 0.0 09 10 11 12 13 14 15 16 17 09 10 11 12 13 14 15 16 17 —+—TDS Linear(TDS) — Total P Linear(Total P) Annual Metals Report ACMW-10 Diamond Valley Ranch Ca Mg K Na Al As Ba Be Ag Cd. Cr Cu ACMW-10 06/18/2009 35.1 7.51 1.46 10.4 130 <2 31 <1 21.5 <0.5 <5 <20 07/08/2010 24 6.4 <1 7.5 330 <1 27 <1 <0.5 <0.5 <1 <2 07/26/2012 20.4 6.05 1.22 9.11 324 <1 34.7 <1 <10 <0.5 <1 <20 08/01/2014 18.8 5.30 1.16 8.58 <20 <1 30.0 <1 <0.5 <0.5 <1 <2 06/11/2015 16.5 4.84 <1 7.88 <20 <1 30.7 <1 <0.5 <0.5 <1 <2 08/16/2016 17.1 5.08 <1 7.62 51.2 <1 26.9 <1 <0.5 <0.5 <1 <2 06/08/2017 17.9 5.67 <1 6.89 827 <1 32.4 <1 <0.5 <0.5 <1 <2 Fe Hg Mn Mo Ni Pb Se Sb TI V Zn ACMW-10 06/18/2009 137 <0.2. <20 2.9 <5 <2.5 <5 <1 <1 <3 <10 07/08/2010 580 <0.2 20 <2 <5 <0.5 <5 <1 <1 <3 <20 07/26/2012 135 <0.2 <20 <2 <5 <5 <1 <1 <3 <10 08/01/2014 24.1 <0.2 2.71 <2 <5 <0.5 <5 <1 <1 <3 <20 06/11/2015 <20 <0.2 <2 <2 <5 <0.5 <5 <1 <1 <3 <20 08/16/2016 85.0 <0.2 3.20 <2 <5 <0.5 <5 <1 <1 <3 <20 06/08/2017 1320 <0.2 35.7 <2 <5 <0.5 <5 <1 <1 3.90 <20 Cations reported as mg/L.All other metals reported as ug/L. Site: ACMW-11 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2017 Depth Water Temp Alk Hard- Turb Total P TKN NH3-N NO2-N NO3-N Total N Date ft- Level C pH mg/L mg/L NTU mg/L mg/L- mg/L mg/L mg/L mg/L 03/07/2017 12.49 5490.52 8.2 6.58 32.1 0.025 2.410 < 0.020 < 0.030 2.190 4.6 06/08/2017 12.93 5490.08 10.3 6.36 33.3 0.021 < 0.080 < 0.020 < 0.020 0.390 0.33 08/24/2017 16.12 5486.89 16.5 6.54 28.3 0.018 < 0.100 0.031 < 0.010 0.039 0.1 11/22/2017 20.91 5482.1 14.2 6.07 37.3 0.023 < 0.-090 < 0.020 < 0.020 1.670 1.51 Maximum 20.91 5490.52 16.5 - 6.58 37.3 > 0.025 2.410 < 0.031 < 0.030 2.190 4.600 Minimum 12.49 5482.10 8.2 6.07 28.3 0.018 < 0.080 < 0.020 < 0:010 0.039 0.100 Average 15.61 5487.40 12.3 6.39 32.8 0.022 0.670 < 0.023 < 0.020 1.072 1.635 #Tests 4 4 4 4 4 0 - 0 4 4 4 4 4 4 Site: ACMW-11 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2017 Total Coli E. coli Fecal- TDS EC Chloride COD SO4 Color chromo chromo Strep Date mg/L. umhos mg/L mg/L mg/L Units MPN MPN MPN Comments 03/07/2017 78 94.7 2.08 5.07 < 1 < 1 06/08/2017 57 77.4 1.61 3.70 < 1 < 1 08/24/2017 53 59.9 0.99 2.27 < 1 < 1 11/22/2017 72 94.1 2.30 2.84 < 1 < 1 Maximum 78 94.7 2.30 5.07 < 1- < 1 Minimum 53 59.9 0.99 2.27 < 1 < 1 Average 65 81.5 1.74 3.47 < 1 < 1 #Tests 4 4 4 0 4 0 4 4 0. Site: . ACMW-11 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA From_: 2009 To: 2017 Depth Water Temp Alk Hard Turb Total P TKN NH3-N NO2-N NO3-N Total N- Year ft Level C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L mg/L 09 19.6 5485.4 11.4 6.10 40 36 1.23 0.026 < 0.050 < 0.010 0.258 0.290 10 17.2 5483.6 11.4 5.95 35 0.031 < 0.050 < 0.010 0.422 0.472 11 23.7 5479.3 9.7 6.14 41 3.60 0.016 0.117 < 0.010 0.366 0.450 12 27.1 5475.9 11.1 6.60 32 1.50 0.123 0.207 0.021 < 0:010 0.554 0.771 13 23.2 5479.8 11.3 6.24 30 0.023 0.053 0.023 < 0.010 1.767 1.647 14 20.7 5482.3 13.6' 6.27 28 0.029 0:138 0.032 < 0.025 2.773 2.873 15 24.9 547B.1 0.7 6.29 28 0.018 0.050 < 0.020 < 0.020 1.278 1.135 16 18.3 5484.7 12.8 6.17' 26 0.021 0.190 < 0.020 < 0.030 2.931 2.642 17 15.6, - 5487.4 12.3 6.39 33. 0.022 0.670 < 0.023 < 0.020 1.072 1.635 Maximum 27.1 5487.4 13.6 6.60 41 36 3.60 0.123 0.670 0.032 0.030 2.931 2.873 Minimum 15.6 5475.9 9.7 5.95 26 36 1.23 0.016 0.050 0.020 < 0.010 0.258 0.290 Average 21.2 5481.8 11.5 6.24 33 36 2.11 0.034 0.169 0.023 0.016 1.269 1.324 #Tests 9 9 9 9 9 1 3 9 9 6 9 9 9 1 - Site: ACMW-11 SOUTH TAHOE PUBLIC UTILITY DISTRICT ,PINE COUNTY GROUNDWATER QUALITY DA From 1989 To: 2017 Total Fecal TDS EC Chloride COD SO4 Color Coli E.coli Strep Year mg/L umhos mg/L mg/L mg/L Units MPN MPN MPN Comments - 09 68 93 1.63 < 5 1.85 < 1.0 < 1.0 First year of sampling 10 63 83 1.45 2.39 < 1.0 < 1.0 11 67 90 1.71 2.37 < 1.0 < 1.0 12 140 79 1.71 2.60 < 1.0 < 1.0 13 69 83 1.95 3.06 < 1.0 < 1.0 14 75 94 3.17 4.55 < 1.0 < 1.0 15 66 82 1.95 4.40 1.0 < 1.0 16 69 92 2.27 4:47 < 1.0 < 1.0 17 65 82 1.74 3.47 < 1.0 < 1.0 Maximum 140 94 3.17 5 4.55 < 1.0 < 1.0 Minimum 63 79 1.45 < 5 1.85 < 1.0 < 1.0 Average 76 86 1.95 5 3.24 < 1.0 < 1.0 #Tests 9 9 9 1 9 0 9 9 0 -Site ACMW 11 Nitrate-Nitrogen &Water Level Chlorides 5 5495 50 4 5490 .40 3 5485 m 30 cr) co E L E' d 2 5480 20 1 5475 10 0 5470 0 09 10 11 12 13 14 15 16 17 09 10 11 12 13 14 .15 16 17 —+—Nitrate Water Level Linear(Nitrate) Chloride Linear(Chloride) Total Dissolved Solids (TDS) Total Phosphorus 500 0.4 400 0.3 300 J J rn rn 0.2 E E 200 0.1 . 100 0 0.0 09 10 11 12 13 14 15 16 17 - 09 10 11 12 13 14 15 16 17 — TDS Linear(TDS) Total P Linear(Total P) t Annual Metals Report ACMW-11 Diamond Valley Ranch Ca Mg K Na Al As Ba Be Ag Cd Cr Cu ACMW-11 07/15/2009 8.8 2.5 1.3 4.5 <20 <2 25 <1 <0.5 <0.5 <1 <2 07/08/2010 7.7 2.4 1.3 4.4 600 <1 29 <1 <0.5 <0.5 <1 <2 07/13/2011 8.64 2.58 1.25 4.67 258 <1 27.2 <1 <0.5 <0.5 <1 <2 07/26/2012 7.27 1.92 1.28 4.5 49.8 <1 21.6 <1 <10 <0.5 <1 <20 08/01/2014 12.1 3.39 1.78 6.54 <20 <1 39.8 <1 <0.5 <0.5 <1 <2 06/11/2015 8.62 2.60 1.31 4.71 188 1.59 22.3 <1 <0.5 <0.5 <1 <2 08/16/2016 6.20 1.77 1.28 4.91 145 <1 20.7 <1 <0.5 <0.5 <1 <2 06/08/2017 7.07 2.14 1.02 4.07 30.4 <1 21.6 <1 <0.5 <0.5 <1 <2 Fe Hg Mn MO Ni Pb Se Sb TI V Zn ACMW-11 07/15/2009 <50 <0.2 <2 <2 <5 <0.5 <5 <1 <1 <3 <20 07/08/2010 840 <0.2 19 <2 <5 <0.5 <5 <1 <1 <3 <20 07/13/2011 210 <0.2 6.52 <2 <5 <0.5 <5 <1 <1 <3 <20 07/26/2012 80.5 <0.2 <20 <2 <5 <2.5 <5 <1 <1 <3 <10 08/01/2014 <20 <0.2 <2 <2 <5 <0.5 <5 <1 <1 <3 <20 06/11/2015 253 <0.2 4.40 <2 <5 <0.5 <5 <1 <1 <3 <20 08/16/2016 123 <0.2 3.19 <2 <5 <0.5 <5 <1 <1 <3 <20 06/08/2017 <20 <0.2 <2 <2 <5 <0.5 <5 <1 <1 .<3 <20 Cations reported as mg/L.All other metals reported as ug/L. Site: ACMW-12 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2017 Depth Water- Temp Alk Hard Turb Total P TKN NH3-N NO2-N NO3-N Total N Date ft Level C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L mg/L 02/22/2017 21.93 5503.11 11.6 6.69 49.4 0.034 < 0.050 < 0.020' < 0-010 0.380 0.297 05/10/2017 22.13 5502.91 11.9 6.79 48.6 - 0.033 . < 0.100 < 0.020 < 0.010 0.343 0.286 07/27/2017 26.60 5498.44 13.2 6.65 47.9 0.089 < 0.050 0.024 < 0.010 0.338 0.300 11/14/2017 31.48 5493.56 11.0 6.78 48.7 0.036 < 0.100 < 0.020 < 0.010 0.349 0.290 Maximum 31.48 5503.11 13.2 6.79 49.4 0.089 < 0.100 0.024 < 0.010 0.380 0.300 Minimum 21.93 5493.56 11.0 6.65 47.9 0.033 < 0.050 < 0.020 < 0.010 0.338 0.286 Average 25.54 5499.51 11.9 6.73 48.7 0.048 < 0.075 0.021 < 0.010 0.353 0.293 #Tests 4 4 4 4 4 0 0 4 4 4 4 4 4 Site: ACMW-12 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2017 Total Coli E.coli Fecal TDS EC Chloride COD SO4 Color Chromo Chromo Strep Date mg/L umhos mg/L mg/L mg/L Units MPN MPN MPN Comments 02/22/2017 93 105 1.62 2.57 < 1 <. 1 05/10/2017 .96 103 1.64 2.61 < 1 < 1 07/27/2017 95 107 1.65 2.52 < 1 < 1 _ 1.1/14/2017 98 110 1.68 2.61 < 1 < 1 Maximum 98 110 1.68 2.61 < 1 < 1 Minimum 93 103 1.62 2.52 < 1 < 1 Average 96 106 1.65 2.58 < 1 < 1 #Tests 4 4 4 0 4 0 4. 4 0 Site: ACMW-12 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA From: 2009 To: 2017 Depth Water Temp Alk Hard Turb Total P TKN NH3-N NO2=N NO3-N Total-N Year ft Level C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L mg/L 09 30.9 5494.1 12.3 6.82 64 60 0.30 0.034 < 0.050 < 0.010 0.774 0.804 10 30.7 5492.0 11.9 6.59- 61 0.034 < 0.050 < 0.010 0.713 0.763 11 33.1 5491.9 11.5 6.70 57 0.21 0.032 < 0.058. < 0.010 0.602 0.669 12 34.9 5490.1 11.1 6.89 52 0.04 0.036 0.081 0.024 < 0.010 0.588 0.678 13 30.9 5494:2 11.5 6.83 53 0.053 0.232 0.023 < 0.010 0.553 0.758 14 30.8 5494.2 11.9 6.81 51 0.034 0.072 0.025 < 0.010 6.557 0.585 15 33.9 5491.1 12.1 6.63 50 0.041 < 0.050 < 0.020 < 0.010 0.558 0.551 16 27.9 5497.2 12.0 6.55 51 0.041 < 0.063 < 0.020 < 0.010 0.468 0.440 17 25.5 5499.5 11.9 6.73- 49 0.048 < 0.075 0.021 < 0.010 0.353 0.293 Maximum 34.9 5499.5 12.3 6.89 64 60 0.30 0.053 < . 0.232 0.025 < 0.010 0.774 0.804 Minimum 25.5 5490.1 11.1 6.55 49 60 0.04 0.032 < 0.050 0.020 < 0.010 0.353 0.293 Average 31.0 5493.8 11.8 6.73 54 60 0.18 0.039 < 0.081 0.022 < 0.010 0.574 0.616 #Tests 9 9 9 9 9 1 3 9 9 6 9 9 9 Site: ACMW-12 SOUTH TAHOE PUBLIC UTILITY DISTRICT ,PINE COUNTY GROUNDWATER QUALITY DA From 1989 To: 2017 Total Fecal TDS EC Chloride COD SO4 Color Coli E,coli Strep Year mg/L umhos mg/L mg/L mg/L Units MPN MPN MPN Comments 09 114 142 1.89 7 4.26 < 1.0 < 1.0 First year of sampling 10 108 138 1.64 3.90 < 1.0 < 1.0 11 103 130 1.53 3.50 < 1.0 < 1.0 12 . 107 119 1.53 3.29 < 1.0 < 1.0 13 105 119 1.48 3.14 < 1.0 < 1:0 . 14 99 115 1.58 2.92 < 1.0 < 1.0 15 100 1-19 1.63 2.70 < 1.0 < 1.0 16 104 111 1.70 2.65 < 1.0 < 1.0 17 96 106 1.65 2.58 < 1.0 < 1.0 Maximum 114 142 1.89 7 4.26 < 1.0 < 1.0 Minimum 96 106 1.48 7 2.58 < 1.0 < 1.0 Average 104 122 1.62 7 3.21 < 1.0 < 1.0 #Tests 9 9 9 1 9 0 9 9 0 Site ACMW=12 Nitrate-Nitrogen &Water Level Chlorides 5 5505 50 4 5500 40 3 5495 30 .�.. E 2 5490 20 1 5485 10 0 5480 0 09 10 11 12 13 14 15 16 17 09 10 11 12 13 14 15 16 17 —�Nitrate --F-Water Level Linear(Nitrate) Chloride Total Dissolved Solids (TDS) Total Phosphorus 500 0.4 400 - 0.3 300 rn 0.2 E E 200 0.1 100 0 0.0 09 10 11 12 13. 14 15 16 17 09 10 11 12 13 14 15 16 17 --*—TDS — Total P Annual Metals Report ACMW-12 Diamond Valley Ranch Ca Mg K Na Al As Ba Be Ag Cd Cr Cu ACMW-12 06/18/2009 15.5 4.04 1.9 5.75 22 <2 21 <1 <10 <0.5 <1 <20 07/08/2010 16 4 1.4 4.9 <20 <1 21 <1 <0.5 <0.5 <1 <2 07/13/2011 15 3.81 1.56 4.79 <20 <1 19.2 <1 <0.5 <0.5 <1 <2 07/26/2012 12.9 3.27 1.51 4.56 <20 <1 19.4 <1 <10 <0.5 <1 <20 07/10/2013 13.0 3.25 1.37 4.46 07/09/2014 13.5 3.66 1.59 4.82 <20 <1 23.0 <1 <0.5 <0.5 <1 <2 08/19/2015 12.7 3.62 1.28 4.58 <20 <1 22.1 <1 <0.5 <0.5 <1 <2 08/10/2016 12.1 3.52 1.32 4.52 <20 <1 22.3 <1 <0.5 <0.5 <1 <2 07/27/2017 11.0 3.15 1.27 4.12 <20 <1 20.8 <1 <0.5 <0.5 <1 <2 Fe Hg Mn Mo Ni Pb Se Sb TI V Zn ACMW-12 06/18/2009 81.7 <0.2 <20 <2 <5 <2.5 <5 <1 <1 <3 <10 07/08/2010 <20 <0.2 <2 <2 <5 <0.5 <5 <1 <1 <3 <20 07/13/2011 <20 <0.2 <2 <2 <5 <0.5 <5 <1 <1 <3 <20 07/26/2012 <50 <.0.2, <20 <2 <5 <2.5 <5 <1 <1 <3 <10 07/09/2014 <20 <0.2 <2 <2 <5 <0.5 <5 <1 <1 <3 <20 08/19/2015 <20 <0.2 <2 <2 <5 <0.5 <5 <1 <1 <3 <20 08/10/2016 <20 <0.2 <2 <2 <5 <0.5 <5 <1 <1 <3 <20 07/27/2017 <20 <0.2 <2 <2 <5 <0.5 <5 <1 <1 <3 <20 Cations reported as mg/L.All other metals reported as ug/L. Site: ACMW-13 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2017 Depth Water Temp Alk Hard Turb Total P TKN NH3-N NO2-N NO3-N Total N Date ft Level C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L mg/L 02/22/2017 5.72 5548.83 6.6 5.98 45.0 < 0.010 0.070 < 0.020 < 0.010 0.046 0.116 05/10/2017 8.56 5545.99 8.1 6.37 40.6 0.020 < 0.100 < 0.020 < 0.010 0.232 0.284 07/27/2017 11.72 5542.83 12.9 6.64 -46.2 0.042 < 0.050 0.026 < 0.010 0.563 0.582 11/14/2017 11.81 5542.74 10.3 6.38 50.9 0.025 < 0.100 < 0.020 < 0.010 0.737 0.665 Maximum 11.81 5548.83 12.9 6.64 50.9 0.042 0.100 0.026 < 0.010 0.737 0.665 Minimum 5.72 5542.74 6.6 5.98 40.6 0.010 < 0.050 < 0.020 < 0.010 0.046 0.116 Average 9.45 5545.10 9.5 6.34 45.7 0.024 0.080 0.022 < 0.010 0.395 0.412 #Tests 4 4 4 4 4 0 0 4 4 4 4 4 4 Site: ACMW-13 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2017 Total Coli E, coli Fecal TDS EC Chloride COD SO4 Color Chromo chromo Strep Date mg/L umhos mg/L mg/L mg/L Units MPN MPN MPN Comments 02/22/2017 120 96.6 1.34 2.93 < 1 < 1 05/10/2017 112 85.0 1.80 2.88 < 1 < 1 07/27/2017 104 109.0 2.58 1.66 < 1 < 1 11/14/2017 122 120.0 2.74 2.05 < 1 < 1 Maximum 122 120.0 2.74 2.93 < 1 < 1 Minimum 104 85.0 1.34 1.66 < 1 < 1 Average 115 102.7 2.12 2.38 < 1 < 1 #Tests 4 4 4 0 4 0 4 4 0 Site: ACMW-13 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA From: 2012 To: 2017 Depth Water Temp Alk Hard Turb Total P TKN NH3-N NO2-N NO3-N Total N Year ft Level C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L mg/L 12 10.9 5543.6 10.6 6.15 42 54.80 0.550 0.089 0.023 < 0.010 0.113 0.212 13 10.4 5544.1 8.7 6.45 40 0.658 0.135 0.027 0.014 0.092 0.223 14 11.3 5543.3 10.2 6.38 37 0.419 0.098 '0.027 < 0.010 0.045 0.135 15 12.5 5542.1 10.7 6.21 38 0.025 0.068 < 0.020 < 0.010 0.050 0.115 16 10.8 5543.8 10.4 6.07 39 0.026 0.087 < 0.020 < 0.010 0.068 0.154 17 9.5 5545.1 9.5 6.34 46 0.024 0.080 0:022 < 0.010 0.395 0.412 Maximum 12.5 5545.1 10.7 6.45 46 54.80 0.658 0.135 0.027 0.014 0.395 0.412 Minimum 9.5 5542.1 8.7 6.07 37 54.80 0.024 0.068 0.020 < 0.010 0.045 0.115 Average 10.9 5543.7 10.0 6.27 40 54.80 0.284 0.093 0.023 0.011 0.127 0.208 #Tests 6 6 6 6 6 0 1 6 6 6 6 6 6 Site: ACMW-13 SOUTH TAHOE PUBLIC UTILITY DISTRICT ,PINE COUNTY GROUNDWATER QUALITY DA From 2012 To: 2017 Total Fecal TDS EC Chloride COD SO4 Color Coli E. coli Strep - Year mg/L umhos mg/L mg/L mg/L Units MPN MPN MPN ' Comments 12 109 90 1-.40 2.24 1 < 1.0 First year of sampling 13 145 86 1.38 2.62 < 1 < 1 14 98 80 1.36 2.23 < 1 < 1 15 103 88 1.42 2.06 < 1 < 1 16 110 86 1.60 2.30 < 1 < 1 17 115 103 2.12 2.38 < 1 < 1 Maximum 145 103 2.12 2.62 1 < 1.0 Minimum 98 80 1.36 2.06 1 < 1.0 Average 113 89 1.54 2.31 1 < 1.0 #Tests 6 6 6 0 6 0 6 6 0 ■ Site AC MWm1 3 Nitrate-Nitrogen &Water Level Chlorides 2.5 5550 50 2.0 5545 40 1.5 5540 30 � J � E d 1.0 5535 20 0.5 5530 10 0.0 5525 0 12 13 14 15 _ 16 17 12 13 14 15 16 17 �-Nitrate Water Level Linear(Nitrate) --*--Chloride Linear(Chloride) Total Dissolved Solids (TDS)" Total Phosphorus 500 1.0 400 0.8 300 0.6 E 200 0.4 100 0.2 0 0.0 12 13 14 15 16 17 12 13 14 15 16 17 —+—TDS Linear(TDS) --+-Total P —. Linear(Total P) Annual Metals Report ACMW-13, Diamond Valley Ranch Ca Mg K Na Al As Ba Be Ag Cd Cr Cu ACMW-13 06/19/2012 9.07 2.9 2.3 5.36 3500 <1 55.9 <1 <10 <0.5 1.24 <20 07/10/2013 4.85 6.47 6.92 5.70 07/09/2014 7.80 2.71 2.08 4.90 387 1.43 34.5 <1 <0.5 <0.5 1.01 <2 08/19/2015 9.57 6.44 5.62 5.62 13000 1.92 176 <1 <0.5 <0.5 11.5 11.8 08/10/2016 8.22 3.08 2.43 4.89 3810 <1 62.4 <1 <0.5 <0.5 3.98 4.34 07/27/2017 11.2 4.19 2.90 5.59 6060 1.01 91.1 <1 <0.5 <0.5 5.10 4.95 Fe Hg Mn MO Ni Pb Se Sb TI V Zn ACMW-13 06/19/2012 3840 <0.2 106 <2 <5 <2.5 <5 <1 <1 6.03 18.5 07/09/2014 3610 <0.2 30.6 <2 <5 <0.5 <5 <1 <1 <3 <20 08/19/2015 22700 <0.2 497 <2 5.93 5.30 <5 <1 <1 29.3 48.2 08/10/2016 5260 <0.2 110 <2 <5 1.26 <5 <1 <1 8.06 <20 07/27/2017 7860 <0.2 170 <2 <5 1.99 <5 <1 <1 13.3 26.8 Cations reported as mg/L.All other metals reported as ug/L. Site: ACMW-14' SOUTH TAHOE PUBLIC UTILITY DISTRICT, ALPINE COUNTY GROUNDWATER QUALITY DATA 2017 Depth Water Temp Alk Hard Turb Total P TKN NH3-N NO2-N NO3-N Total N Date ft Level C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L mg/L 03/07/2017 13.71 5533.49 8.8 6.15 19.3 0.020 1.900 < 0.020 < 0.200 16.1 18.000 06/08/2017 16.10 5531.10 9.0 6.08 21.4 0.017 0.300 < 0.020 < 0.160 13.7 .14.000 08/24/2017 17.63 5529.57 13.1 6.26 23.7 0.020 < 0.100 0.030 < 0.160 5.42 5.480 11/22/2017 18.77 5528.43 11.9 5.64 30.2 0.031 2.190 < 0.020 < 0.040 1.68 3.870 Maximum 18-.77 5533.49 13.1 6.26 30.2 0.031 2.190 0.030 < 0.200 16.10 18.000 Minimum -13.71 5528.43 8.8 5.64 19.3 0.017 < 0.100 - < 0.020 < 0.040 1.68 3.870 Average 16.55 5530.65 10.7 6.03 23.7 0.022 1.123 0.023 < 0.140 9.23 10.338 #Tests 4 4 4 4 4 0 0 4 4 4 4 4 4 Site: ACMW-14 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2017 Total Coli E.coli Fecal TDS EC Chloride COD SO4 Color Chromo Chromo Strep Date mg/L umhos mg/L mg/L mg/L Units MPN,,- MPN MPN Comments 03/07/2017 174 190.0 2.27 2.05 4.1 < 1 06/08/2017 168 182.0 0.22 1.76 < 1 < 1 08/24/2017 94 102.0 < 8.00 < 8.00 40.2 < 1 11/22/2017 84 104.0 2.14 2.74 4.1 < 1 Maximum 174 190.0 8.00 8.00 40.2 < 1 Minimum 84 102.0 < 0.22 1.76 < 1 < 1 Average 130 144.5 3.16 3.64 12 < 1 #Tests 4 4 4 0 4 0 4 4 0 Site: ACMW-14 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA From: 2012 To: 2017 Depth Water Temp Alk Hard Turb Total P TKN NH3-N NO2=N NO3-N Total N Year ft Level C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L mg/L 12 19.3 5527.9 10.8 6.12 42 0.75 0.042 0.054 0.023 < 0.010 0.475 0.539 13 18.2 5529.0 10.8 6.20 37 0.056 0.052 0.025- < 0.012 0.706 0.698 14 19.5 5527.7 11.2 6.29 37 0.044 0.078 0.026 < 0.010 0.429 0.497 15 21.0: 5526.2 11.4- -6.23 38 . 0.042 < 0.050 < . -0.020 < 0.010 0.565 0.568 16 18.4 5528.8 11.5 - 6:02 31 0.021 0:ill < 0.020 < 0.028 1.510 1.560 17 16.6 5530.6 10.7- 6.03 24 0.022 1.123 0.023 < 0.140 9.225 10.338 Maximum 21.0 5530.6 11.5 6.29 42 0.75 0.056 1.123 0.026 0.140 -9.225 10.338 Minimum 16.6 5526.2 10.7 6.02 24 0.75 0.021 0.050 0.020 < 0.010 0.429 0.497 Average 18.8- 5528.4 11.0 6.15 35 0.75 0.038 0.244 0.023 0.035 2.152 2.366 #Tests 6 6 6 6 6 0 1 6 6 6 6 6 6 Site: ACMW-14 SOUTH TAHOE PUBLIC UTILITY DISTRICT ,PINE COUNTY GROUNDWATER QUALITY DA From 2012 To: 2017 Total Fecal TDS EC Chloride COD 804 Color Coli E.coli Strep Year mg/L umhos mg/L mg/L mg/L Units MPN MPN MPN Comments 12 77. 94 1.25 1.95 1 < 1 First year of.sampling 13 71 85 1.45 1.73 < 1 < 1 _ 14 69 84 1.33 . 2.70 < 1 < 1 15 74 93 1.20 2.37. < 1 < 1 16 77 86 1.80 3.00 < 1 < 1 17 130 145 3.16 3.64 12 <. 1 Maximum 130 145 3.16 3.64 12 < 1 Minimum 69 84 1.20 1.73 < 1 < 1 Average 83 98 1.70 2.56 3 < 1 #Tests 6 6 6 0 6 0 6 6 0 Site AC MW=1 4 Nitrate-Nitrogen &Water Level Chlorides 10 5545 50 g 5540 40 6 5535 30 J d J � J � E d E 4 5530 20 2 5525 10 0 5520 0 12 13 14 15 16 17 12 13 14 15 16 17 �—Nitrate —*—Water Level Linear(Nitrate) --*--Chloride Linear(Chloride) Total Dissolved Solids(TDS) Total Phosphorus 500 0.4 400 0.3 300 J J v, 0.2 E E 200 0.1 100 0 0.0 12 13 14 15 16 17 12 13 14 15 16 17 —♦—TDS Linear(TDS) Total P Linear(Total P) Annual Metals Report ACMW-14 Diamond Valley Ranch Ca Mg K Na Al As Ba Be Ag Cd Cr Cu ACMW-14 06/19/2012 9.04 2.52 0.545 5.82 23.9 <1 41.8 <1 <10 <0.5 <1 <20 08/01/2014 9.11 2.87 <1 5.82 76.7 1.58 47.7 <1 <0.5 <0.5 <1 <2 06/11/2015 8.98 2.80 <1 6.15 98.7 1.67 43.8 <1 <0.5 <0.5 <1 <2 08/16/2016 7.86 2.53 <1 5.03 181 <1 44.8 <1 <0.5 <0.5 <1 <2 06/08/2017 15.9 5.24 <1 6.48 804 <1 105 <1 <0.5 <0.5 1.44 <2 Fe Hg Mn MO Ni Pb Se Sb TI V Zn ACMW-14 06/19/2012 62.4 <0.2 <20 <2 <5 <2.5 <5 <1 <1 <3 <10 08/01/2014 268 <0.2 5.17 <2 <5 <0.5 <5 <1 <1 <3 <20 06/11/2015 182 <0.2 5.27 <2 <5 <0.5 <5 <1 <1 <3 <20 08/16/2016 216 <0.2 4.82 <2 <5 <0.5 <5 <1 <1 <3 <20 06/08/2017 1380 <0.2 24.4 <2 <5 <0.5 <5 <1 <1 3.10 <20 Cations reported as mg/L.All other metals reported as ug/L. Site: ACMW-15 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2017 Depth Water -Temp Alk Hard Turb' Total P TKN NH3-N NO2-N NO3-N Total N Date ft Level C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L mg/L 03/14/2017 13.45 5487.15 - 10.9 -6.54 24.3 0.029 0.130 < 0.020 < 0.010 2.08 2.21 06/20/2017 3.61 5496.99 12.8 6.07 28.6 0.039 < 0.050 < 0.020 < 0.010 0.12 0.13 09/13/2017 10.10 5490.50 16.9 6.13 28.8 0.031 < 0.120 < 0.020 < 0.010 0.14 0.22 12/07/2017 20.89 5479.71 14.2 6.02 32.0 0.026 < 0.120 < 0.020 < 0.020 0.36 0.27 Maximum 20.89 5496.99 16.9 6.54' . 32.0 0.039 0.130 < 0.020 < 0.020 2.08 2.21 Minimum 3.61 5479.71 10.9 6.02 24.3 0.026 < 0.050 < 0.020 < 0.010 0.12 0.13 Average 12.01 5488.59 13.7 6.19 28.4 0.031 0.105 < 0.020 < 0.013 0.67 0.71 #Tests 4 4 4 4 4 0 0 4 4 4 4 4 4 - l Site: ACMW-15 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2017 Total Coli E. coli Fecal TDS EC Chloride COD SO4 Color Chromo Chromo Strep Date mg/L umhos mg/L m'g/L mg/L Units MPN MPN MPN Comments 03/14/2017 53- 78.3 1.08 2.30 1 < 1 06/20/2017 49 62.0 < 0.50 1.78 5.2 < 1 09/13/2017 56 68.6 .0.66 1.32 5.2 < 1 12/0.7/2017 66 71.9 < 1.00 1.62 < 1 < 1 Maximum 66 78.3 1.08 2.30 5.2 < 1 Minimum 49 62.0 < 0.50 1.32 < 1 < 1 Average 56 70.2 0.81 1.76 3 < 1 #Tests 4 4 4 0 4 0 4 4 0 Site: ACMW-15 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA From: 2012 To: 2017 Depth Water Temp Alk Hard Turb Total P TKN NH3-N NO2-N NO3-N Total N Year ft Level C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L mg/L 12 " 23.6 5477.0 12.3 5.97 31 4160 0.042 0.055 0.024 < 0.010 0.659 0.724 13 23.7 5476.9 12.2 6.12 28 0.042 0.088 0:032 < 0.012 0.934 1.018 14 25.6 5475.0 13.1 6.11 27 0.037 0.055 0.022 < 0.013 1.160 1.185 15 27.8 5472.8 12.7 6.06 27 0.024 0.059 < 0.020 < ' 0.017 1.557 1.610 16 15.8 5484.8 13.6 5.94 25 0.028 0.335 <- .0.020 < 0.058 6.105 6.423 17 12.0 5488.6 13.7 6.19 28 0.031. 0.105 < 0.020 < 0.013 0.673 0.705 Maximum 27.8 5488.6 13.7 6.19 31 4.60 0.042 0.335 0.032 0.058 6.105 6.423 Minimum 12.0 5472.8, 12.2 5.94 25 4.60 0.024 < 0.055 0.020- < 0.010 0.659 0.705 Average 21.4 5479.2 12.9 6.06 28 4.60 0.034 0.116 0.023 0.020 1.848 1.944 #Tests 6 6 6 6 6 0 1 6 6 6 6 6 6 Site: ACMW-15 SOUTH TAHOE PUBLIC UTILITY DISTRICT ,PINE COUNTY GROUNDWATER QUALITY DA From 2012 To: 2017 Total Fecal TDS EC Chloride COD SO4 Color Coli E. coli Strep Year mg/L umhos mg/L mg/L mg/L Units MPN .MPN MPN Comments 12 65 73 1.46 1.82 < 1 < 1 First year of sampling 13 65 72 1.62 1.78 < 1 < 1 14 61 72. 1.58 1.82 < 1 < 1 15 68 86 1.64 1.81 < 1 < 1 16 99 114 3.09 3.18 3 < 1 17 56 70 0.81 1.76 3 < 1 Maximum 99 114 3.09 3.18 < 3 < 1 Minimum 56 70 0.81 1.76 < 1 < 1 Average 69 81 1.70 2.03 < 2 < 1 #Tests 6 6 6 0 6 0 6 6 0 Site ACMW=1.5 Nitrate-Nitrogen &Water Level Chlorides 10 5490 20 8 5485 15 6 5480 J D J /A 10 E L d 4 5475 5 2 5470 0 5465 0 12 13 14 15 16 17 12 13 14 15 16 17 --�—Nitrate Water Level Linear(Nitrate) ---*--Chloride Linear(Chloride) Total Dissolved Solids (TDS), Total Phosphorus- 500 0.4 400 0.3 300 0.2 200 0.1 100 0 0.0 12 13 14 15 16 17 12 13 14 15 16 17 —+--TDS Linear(TDS) ---*.—Total P Linear(Total P) Annual Metals Report ACMW-15 Diamond Valley Ranch Ca Mg K Na Al As Ba Be Ag Cd Cr Cu ACMW-15 .06/19/2012 7.63 1.72 1.17 4.38 561 <1 38.2 <1 <10 <0.5. <1 <20 06/12/2013 6.41 1.59 1.20 4.12 06/05/2014 7.08 1.67 1.15 4.44 69.8 <1 30.6 <1 <0.5 <0.5 <1 <2 06/02/2015 7.49 1.75 1.08 4.24 35.0 <1 34.0 <1 <0.5 <0.5 <1 <2 08/30/2016 11.1 2.56 1.59 5.04 22.3 <1 42.4 <1 <0.5 <0.5 <1 <2 06/20/2017 6.60 1.57 <1 3.86 152 <1 22.5 <1 <0.5 <0.5 <1 <2 Fe Hg Mn MO Ni Pb Se Sb TI V Zn ACMW-15 06/19/2012 376 <0.2 <20 <2 <5 <2.5 <5 <1 <1 <3 <10 06/05/2014 67.6 <0.2 3.52 <2 <5 <0.5 <5 <1 <1 <3 <20 06/02/2015 46.2 <0.2 2.15 <2 <5 <0.5 <5 <1 <1 <3 <20 08/30/2016 21.3 <0.2 <2 <2 <5 <0.5 <5 <1 <1 <3 <20 06/20/2017 152 <0.2 3.62 <2 <5 <0.5 <5 <1 <1 <3 <20 Cations reported as mg/L.All other metals reported as ug/L. Site: ACMW-16 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2017 Depth Water Temp Alk ' Hard Turb Total P TKN NH3-N NO2-N NO3-N Total N. Date ft Level C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L mg/L 03/14/2017 8.78 5475.75 8.5 6.78 .49.4' 0.058 0.240 < 0.020 < 0.010 3.10 3.34 06/20/2017 8.86 5475.67 12.3 6.21 48.7 0.063 < 0.050 < 0.020 < 0.010 1.10 1.01 09/13/2017 8.10 5476.43 16.9 6.26 56.6 0.058 < 0.120 < 0.020 < 0.010 1.05 1.11 12/07/2017 12.22 5472.31 12.9 6.25 57.7 0.044 < ' 0.120 < 0.020 < 0.020 0.38 0.32 Maximum 12.22 5476.43 16.9 6.78 57.7 0.063 0.240 < 0.020 < 0.020 3.10 3.34 Minimum 8.10 5472.31 8.5 6.21 48.7 0.044 < 0.050 < 0.020 < 0.010 0.38 0.32 Average 9.49 5475.04 12.7 6.38 53.1 0.056 0.133 < 0.020 < 0.013 1.41 1.45 #Tests 4 4 4 . 4 4 0 0 4 4 4. 4 4 4 Site: ACMW-16 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2017 Total Coli E. coli Fecal TDS EC Chloride COD SO4 Color Chromo Chromo Strep Date mg/L umhos mg/L mg/L mg/L Units MPN MPN MPN Comments 03/14/2017 100 147 1.91 5.17 14.6 < 1 06/20/2017 83 117 1.18 4.01 1 < 1 09/13/2017 96 143 1.43 2.21 1 < 1 12/07/2017 92 120 . 1.18 2.03 < 1 < 1 Maximum 100 147 1.91 5.17 14.6 < 1 Minimum 83 117 1.18 2.03 < 1 < 1 Average 93 132 1.43 3.36 4 < 1 #Tests 4 4 4 0 4 0 4 4 0 Site: ACMW-16 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA From: 2012 To: 2017 Depth Water Temp Alk Hard Turb- Total P TKN NH3-N NO2-N -NO3-N Total N Year ft Level C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L mg/L 12 17.1 5467.4 11.6 6.24 '66 5.60 0.156 0.061 0.024 < 0.010 0.403 0.474 13 16.6 5468.0. 11.7 6.43- 75 0.118 0.069 0.029 < 0.012 0.310 0.356 14 15.2 5469.3 11.9 6.41 52 0.071 0.188 0.023 < 0.010 2.128 2.290 15 18.0 5466.6 12.1 6.41 53 0.061 0.060 < 0.020 < 0.013 0.776 0.795 16 11.8 5472.8 12.7 6.26 42 0.051 0.683 < 0.020 < 0.055 7.130 7.813 17 9.5 5475.0 12.7 6.38 53 0.056 0.133 < 0.020 < 0.013 1.408 1.445 Maximum 18.0 5475.0 12.7 6.43 75 5.60 0.156 0.683 0.029 0.055 7.130 7.813 Minimum 9.5 5466.6 11.6 6.24 -.42 5.60 . 0.051 < 0.060 0.020 < 0.010 0.310 0-356 Average 14.7 5469.8 12.1 6.35 57 5.60 0.085 0.199 0.023 0.019 2.026 2.195 #Tests 6 6 6 6 6 0 1 6 6 6 6 6 6 Site: ACMW-16 SOUTH TAHOE PUBLIC UTILITY DISTRICT ,PINE COUNTY GROUNDWATER QUALITY DA From 2012 To: 2017 Total Fecal TDS EC Chloride COD SO4 Color Coli E.coli Strep Year mg/L umhos mg/L mg/L mg/L Units MPN MPN MPN Comments 12 116 135 3.46 1.33 2 < 1 .First year of sampling 13 128 156 3.55 0.82 1 < 1 14 109 132 3.64 1.26 1 < 1 15 98 128 2.38 1.32 1 < 1 16 133 163 3.62 3.99 9 < 1 17 93 132 1.43 3.36 - 4 < 1 Maximum 133 163 3.64 3.99 9 < 1 Minimum 93 128 1.43 0.82 < 1 < 1 Average 113 141 3.01 2.01 3 < 1 #Tests 6 6 6 0 6 0 6 6 0 F Site AC MW=1 6 Nitrate-Nitrogen &Water Level Chlorides 10 5485 40 8 5480 30 6 5475 m J J _j a� 20 E ` 4 5470 10 2 5465. 0 i 5460 0 12 13 14 15 16 17 12 13 14 15 16 17 —�Nitrate ---&—Water Level Linear(Nitrate) ---*--Chloride Linear(Chloride) Total Dissolved Solids (TDS) Total Phosphorus 500 0.4 400 0.3 300 J J a� a� 0.2 200 0.1 100 0 0.0 12 13, 14 15 16 17 12 13 14 15 16 17 —+—TDS Linear(TDS) —♦—Total P Linear(Total P) Annual Metals Report ACMW-16 Diamond Valley Ranch Ca Mg K Na Al As Ba Be Ag Cd Cr Cu ACMW-16 06/19/2012 14.1 3.79 1.4 7.11 849 <1 39.8 <1 <10 <0.5 <1 <20 06/12/2013 16.1 4.15 1.21 7.97 06/05/2014 14.2 4.33 1.68 7.01 109 1.88 42.0 <1 <0.5 <0.5 <1 <2 06/02/2015 13.2 4.00 1.21 6.89 212 2.10 27.6 <1 <0.5 <0.5 <1 <2 08/30/2016 15.0 4.12 3.83 7.50 62.7 <1 80.0 <1 <0.5 <0.5 <1 <2 06/20/2017 11.7 3.35 3.68 5.68 151 <1 58.2 <1 <0.5 <0.5 <1 <2 Fe Hg Mn Mo Ni Pb Se Sb TI V Zn ACMW-16 06/19/2012 830 <0.2 22.5 <2 <5 <2.5 <5 <1 <1 <3 <10 06/05/2014 466 <0.2 3.88 <2 <5 <0.5 <5 <1 <1 <3 <20 06/02/2015 41.6 <0.2 4.35 <2 <5 <0.5 <5 <1 <1 <3 <20 08/30/2016 56.4 <0.2 2.06 <2 <5 <0.5 <5. <1 <1 <3 <20 06/20/2017 50.3 <0.2 <2 <2 <5 <0.5 <5 <1 <1 <3 <20 Cations reported as mg/L.All other metals reported as ug/L. Site: ACMW-17 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2017 Depth Water Temp Alk Hard Turb Total P TKN NH3-N NO2-N NO3-N Total N Date ft Level C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L mg/L 03/14/2017 5.52- 5499.40 9.3 6.26 30.1- 0.026 0.070 < 0.020 < 0.010 1.100 1.170 06/20/2017 4.85 -5500.07 10.6 6.34 30.5 0.028 < 0.050 < 0.020 < 0.010 1.310 1.170 09/13/2017 11.90 5493.02 14.0 6.26 34.3 0.036 < 0.120 0.020 < 0.010 0.611 0.583 12/07/2017 15.77 5489.15 10.6 6.33 42.0 0.029 < 0.120 < 0.020 < 0.010 0.676 0.546 Maximum 15.77 5500.07 -14.0 6.34 42.0 0.036 < 0.120 0.020 < 0.010 1.310 1.170 Minimum 4.85 5489.15 9.3 6.26 30.1 0.026 < 0:050 < 0.020 < 0.010 0.611 0.546 Average 9.51 5495.41 11.1 6.30 34.2 0.030 0.090 < 0.020 < 0.010 0.924 0.867 #Tests 4 4 4 4 4 0 0 4 4 4 4 4 4 Site: - ACMW-17 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA , 2017 Total Coli E, coli Fecal TDS EC Chloride COD SO4 Color Chromo Chromo Strep Date mg/L umhos mg/L mg/L mg/L Units MPN MPN MPN Comments 03/14/2017 68 87 1.60 4.29 < 1 < 1 06/20/2017 68 83 1.67 3.56 < 1 < 1 09/13/2017 67 89 1.57 2.61 12/07/2017 83 99 2.28 2.85 < 1 < 1 Maximum 83 99 2.28 4.29 < 1 < 1 Minimum 67 83 < 1.57 2.61 < 1 < 1 Average 72 89 1.78 3.33 < 1 < 1 #Tests 4 4 4 0 4 0 4 4 0 Site: ACMW-17 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA From: 2012 To: 2017 Depth Water Temp Alk Hard . Turb Total P. TKN NH3-N NO2-N NO3-N Total N Year ft Level C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L mg/L 12 17.5 5487.4 11.8 6.20 41 2.80 0.031 < 0.050 0.023 < 0:017 1.449 1.516 13 15.2 5489.7 10.9 6.40 39 0.054 < 0.055 0.030 < 0.018 1.395 -1.429 14 11.5 5493.4 11.9 6.38 36 0.037 < 0.050 0.022 < 0.010 0.864 0.880 15 17.3 5487.6 11.0_ 6.30 36 0.025 <- 0.050 < 0.020 < 0.013 0.450 0.455 16 11.0 5493.9 12.2 6.22 35 0.027 < 0.105 < 0.074 < 0.025 1.033 1.032 17 9.5 5495.4 11.1 6.30 34 0.030 0.090 < 0.020 < 0.010 0.924 0.867 Maximum 17.5 5495.4 12.2 6.40 41 2.80 0.054 0.105 0.074 0.025 1.449 1.516 Minimum 9.5 5487.4 10.9 6.20 34 2:80 0-.025 < 0.050 0.020 < 0.010 0.450 0.455 Average 13.7 5491.2 11.5 6.30 37 2.80 0.034 0.067 0.032 0:015 1.019 1.030 #Tests 6 6 6 6 6 0 1 6 6 6 6 6 6 Site: ACMW-17 SOUTH TAHOE PUBLIC UTILITY DISTRICT ,PINE COUNTY GROUNDWATER QUALITY DA From 2012 To: 2017 Total Fecal TDS EC Chloride COD SO4 Color Coli E: coli Strep Year mg/L umhos mg/L mg/L mg/L Units MPN MPN MPN Comments 12 78 105 2.25 2.26 1 < 1 First year of sampling 13 79 100 2.17. 2.44 1 < 1 14 72 87 1.65 2.79 15 70 90 1.59 2.82 1 < 1 16 77 91 1.7a 3.00 < 1 < 1 17 72 89 1.78 3.33 < 1 < 1 Maximum 79 105 2.25 3.33 1 < 1 Minimum 70 87 1.59 < 2.26 < 1 < 1 Average 75 94 1.86 2.77 1 < 1 #Tests 6 6 6 0 6 0 6 6 0 : Site ACMW- 17 Nitrate-Nitrogen &Water Level Chlorides 5 5500 40 4 - 5495 30 3 5490 J d J E 20 E 2 5485 10:.. 5480 0 5475 0 _ 12 13 14 15 16 17 12 13 14 15 16 17 �—Nitrate --*—Water Level Linear(Nitrate) Chloride Linear(Chloride) Total Dissolved Solids (TDS) Total Phosphorus 500 0.4 400 0.3 300 J J rn m 0.2 E _ E 200 0.1 100 r 0 0.0 12 13 14 15 16 17 12 13 14 15 16 17 --�—TDS Linear(TDS) Total P Linear(Total P) Annual Metals Report ACMW-17 Diamond Valley Ranch Ca Mg K Na Al As Ba Be Ag Cd Cr Cu ACMW-17 06/19/2012 10.3 2.77 1.59 5.56 199 <1 28 <1 <10 <0.5 <1 <20 06/12/2013 9.15 2.25 1.65 5.25 06/05/2014 8.40 2.53 1.35 4.72 86.2 1.12 24.1 <1 <0.5 <0.5 <1 <2 06/02/2015 7.69 2.23 1.06 4.28 27.8 <1 20.8 <1 <0.5 <0.5 <1 <2 08/30/2016 8.50 2.36 1.54 4.99 <20 <1 23.4 <1 <0.5 <0.5 <1 <2 06/20/2017 8.08 2.35 1.11 4.60 <20 <1 18.3 <1 <0.5 <0.5 <1 <2 Fe Hg Mn Mo Ni Pb Se Sb TI V Zn ACMW-17 06/19/2012 149 <0.2 <20 <2 <5 <2.5 <5 <1 <1 <3 <10 06/05/2014 327 <0.2 6.29 <2 <5 <0.5 <5 <1 <1 <3 <20 06/02/2015 <20 <0.2 <2 <2 <5 <0.5 <5 <1 <1 <3 <20 08/30/2016 <20 <0.2 <2 <2 <5 <0.5 <5 <1 <1 <3 <20 06/20/2017 <20 <0.2 <2 <2 <5 <0.5 <5 <1 <1 <3 <20 Cations reported as mg/L.All other metals reported as ug/L. Site: ACMW-18 SOUTH TAHOE PUBLIC UTILITY DISTRICT _ ALPINE COUNTY GROUNDWATER QUALITY DATA 2017 Depth Water Temp Alk Hard. Turb Total P TKN NH3-N NO2-N NO3-N Total N- Date ft Level C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L mg/L 03/14/2017 6.00 5464.56 10.3 6.99 21.9 0.028 0.170 < 0.020 < 0.030 5.800 5.970 06/20/2017 5.24 5465.32 13.0 6.68 27.1 0.029 < 0.050 < 0.020 < .0.010 0.818 0.691 09/13/2017 - 7.33 5463.23 14.4 6.21 27.7 0.034 < 0.120 0.021 < 0.010 0.658 0.648 12/07/2017 8.60 5461.96 12.7 6.42 32.0 0.033 < 0.120 < 0.020 < 0.020 0.521 0.438 Maximum 8.60 5465.32 14.4 6.99 32.0 0.034 0.170 0.021 < 0.030 5.800 5.970 Minimum 5.24 5461.96 10:3 6.21 21.9 0.028 < 0.050 < 0.020 < 0.010 0.521 0.438 Average 6.79 5463.77 12.6 6.58 27.2 0.031 0.115 < 0.020 < 0.018 1.949 1.937 #Tests 4 4 4 4 4 0 0 4 4 4 4 4 4 Site: ACMW-18 SOUTH TAHOE PUBLIC-UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2017 Total Coli E. coli Fecal TDS EC Chloride COD SO4 Color chromo chromo Strep _ Date mg/L umhos mg/L mg/L mg/L Units MPN MPN MPN Comments 03/14/2017' 80 112.0 1.61 4.64 < 1 < 1 06/20/2017 57 70.9 0.89 4.28 1 < 1 09/13/2017 56 67.4 0.84 2.04 1 < 1 12/07./2017 61 73.7 < 1.00 2.41 .2 < 1 Maximum 80 112.0 1.61 4.64 2 < 1 Minimum 56 67.4 0.84 2.04 < 1 < 1 Average 64 81.0 1.09, 3.34 1 < 1 #Tests 4 4 4 0 4 0 4 4 0 Site: ACMW-18 SOUTH.TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA From: 2012 To: 2017 Depth Water Temp l Alk Hard Turb Total P TKN NH3-N NO2-N -NO3-N Total N- Year ft Level C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L mg/L 12 11.3 5459.2 12.6 6.18 37 5.20 0.037 0.135 0.023 < 0.010 0.940 1.085 13 10.2 5460.3 11.9 6.51 36' 0.049 0.052 0.028 < 0.015 1.023 1.041 14 8.5 - 5462.1 12.9 6.48 33 0.031 0.061 0.021 < 0.015 1.500 1-.558 15 10.3 5460.3 12.9 6.43 37 0.031 < 0.050 < 0.020 < 0.013 0.401 0.413 16 8.2 5462.3 12.4 6.40 30 0.030 0.203 < 0.020 < 0.035 2.545 2.710 17 6.8 5463.8 12.6 6.58 27 0.031 0.115 < 0.020 < 0.018 1.949 1.937 Maximum ' 11.3 5463.8 12.9 6.58 37 5.20 0.049 0.203 0.028 0.035 2.545 2.710 Minimum 6.8' 5459.2 11.9 6.18 27 5-20 0.030 0.050 0.020 < 0.010 0.401 0.413 Average 9.2 5461.3 12.5 6.43 33 5.20 0.035 0.103 0.022 0.018 1.393 1.457 #Tests 6 6 6 6 6 0 1 6 6 6 6 6 6 Site: ACMW-18 SOUTH TAHOE PUBLIC UTILITY DISTRICT ,PINE COUNTY GROUNDWATER QUALITY DA From 2012 To: 2017 Total Fecal . TDS EC Chloride COD SO4 Color Coli E. coli Strep Year mg/L umhos mg/L mg/L mg/L Units MPN MPN MPN Comments 12 64 86 1.47 2.23 2 < 1 First year of sampling 13 67 89 1.87 2.27 < 1 < 1 14 67 85 1.62 2.45 1 < 1 15 63 91 1.49 2.50 3 < 1 16 72 91 1.89 2.60 4 < 1 17 64 81 1.09 3.34 1 < 1 Maximum 72 91 1.89 3.34 4 < 1 Minimum 63 81 1.09 2.23 < 1 < 1 Average 66 87 1.57 2.57 2 < 1 #Tests 6 6 6 0 6 0 6 6 0 Site AC MWm1 8 Nitrate-Nitrogen &Water Level Chlorides 5. 54.75 40 4 5470 30 3 5465 J d J E 20 2 5460 10 1 5455 0 5450 0 12 13 14 15 16 17 12 13 14 15 16 17 --�—Nitrate Water Level Linear(Nitrate) --*--Chloride, Linear(Chloride) Total Dissolved Solids (TDS) Total Phosphorus 500 0.4 400 0.3 300 J J a� a� 0.2 E E 200 0.1 100 0 0.0 12 13 14 15 16 17 12 13 14 15 16 17 . —+.—TDS Linear(TDS) Total P Linear(Total P) Annual Metals Report ACMW-18 Diamond Valley Ranch Ca Mg K Na Al As Ba Be Ag Cd Cr Cu ACMW-18 06/19/2012 9.3 2.38 1.05 3.74 433 <1 22 <1 <10 <0.5 <1 <20 06/12/2013 9.07 2.51 0.984 3.72 06/05/2014 10.8 2.87 1.15 4.39 <20 <1 20.3 <1 <0.5 <0.5 <1 <2 06/02/2015 10.1 3.35 1.61 4.15 2450 2.12 44.0 <1 <0.5 <0.5 5.22 2.66 08/30/2016 8.37 2.19 1.08 3.69 36.3 <1 16.6 <1 <0.5 <0.5 <1 <2 06/20/2017 7.46 2.02 <1 3.38 109 <1 14.1 <1 <0.5 <0.5 <1 <2 Fe Hg Mn MO Ni Pb Se Sb TI V Zn ACMW-18 06/19/2012 321 <0.2 <20 <2 <5 <2.5 <5 <1 <1 <3 <10 06/05/2014 <20 <0.2 <2 <2 <5 <0.5 <5 <1 <1 <3 <20 06/02/2015 3580 <0.2 76.2 1.95 <5 1.59 <5 <1 <1 5.49 <20 08/30/2016 <20 <0.2 <2 <2 <5 <0.5 <5 <1 <1 <3 <20 06/20/2017 33.7 <0.2 <2 <2 <5 <0.5 <5 <1 <1 <3 <20 Cations reported as mg/L.All other metals reported as ug/L. Site: ACMW-19 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2017 Depth .Water Temp ' Alk Hard Turb Total P TKN NH3-N NO2-N NO3-N Total N Date ft Level C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L mg/L 03/14/2017 6.58 5410.67 10.7 7.22 74.9 0.101 0.166 0.038 < 0.010 < 0.010 0.166 06/20/2017 7.00 5410.25 11.9 7.11 83.0- 0.107 0.142 0.042 < 0.010 < 0.010 .0.142 09/13/2017 7.00 5410.25 14.7 6.59 98.7 0.095 0:210 0.068 < 0.010 < 0.010 0.210 12/07/2017 7.41 5409.84 13.9 6.70 107.0 0.095 0.180 0.050 < 0.010 < 0.010 0.180 Maximum 7.41 5410.67 14.7 7.22 107.0 0.107 0.210 0.068 < 0.010 < 0.010 0.210 Minimum 6.58 5409.84 10.7 6.59- 74.9 0.095 0.142 0.038 < 0.010 < 0.010 0.142 Average 7.00 5410.25 12.8 6.91 90.9 0.100 0.175 0.050 < 0.010 < 0.010 0.175 #Tests 4 4 4 4 4 0 0 4 4 4 4 4 4 Site: ACMW-19 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2017 Total Coli E. coli Fecal TDS EC Chloride COD SO4 Color Chromo Chromo Strep Date mg/L umhos mg/L mg/L mg/L Units MPN MPN MPN Comments 03/14/2017 109 165 2.57 4.72 2 < 1 06/20/2017 170 252 23.10 12.60 < 1 < 1 09/13/2017 183 306 23.40 10.50 . < 1 < 1 12/07/2017, 156 227 8.20 4.84 < 1 < 1 Maximum 183 306 23.40 12.60 2 < 1 Minimum 109 165 2.57 4.72 < 1 < 1 Average 155 238 14.32 8-:17 1 < 1 #Tests 4 4 4 0 4 0 4 4 0 Site: ACMW-19 SOUTH TAHOE PUBLIC.UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA From: 2012 To: 2017 Depth Water Temp Alk Hard Turb. Total P TKN NH3-N NO2-N NO3-N Total N Year ft Level C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L. mg/L mg/L 12. 7.4 5409.9 12:9 6.75 106 6.70 0.092 0.106 0.050 < 0.010 0.010 0:126 13 -7.1 5410.2 12.4 6.88 105 0.129 0.159 0.067 .0.012 < 0.010 0:160 14 7.7 5409.6 12.5 6.80 129 0.111 0.121 0.041 .0.010 < 0.010 0.123 15 8.3 5409.0 13.1 6.84- 93 0.104 0.1.26 0.050 <. 0.010 < 0.010 0.128 16 7.7 5409.6 12.7 6.75 105 0.102 0.139 0.050 < 0.015 < 0.020 0.139 17 7.0 5410.3 12.8 6.91 91 - 0.100 0.175 0.050 < 0.010 < 0.010 0.175 Maximum 8.3 5410.3 13.1 6.91 129 6.70 0.129 0.175 0.067 0.015 0.020 0.175 Minimum 7.0 5409.0 12.4 6.75 91 6.70 0.092 < 0.106 0.041 < 0.010, < 0.010 0.123 Average 7.5 5409.7 12.7 6.82 105 6.70 0.106 0.137 0.051 0.011 0.012 0.142 #Tests 6' 6 6 6 6 0 1 6 6 6 6 6 6 Site: ACMW-19 SOUTH TAHOE PUBLIC UTILITY DISTRICT ,PINE COUNTY GROUNDWATER QUALITY DA From 2012 To: 2017 Total Fecal TDS EC Chloride COD . SO4 Color. Coli E. coli Strep Year mg/L umhos' mg/L mg/L. mg/L Units MPN MPN MPN Comments 12 144 221 2.81 2.87 2 < 1 First year of sampling - 13 154 241 2.97 1.62 1 < 1 14 152 253 2.47 2.00 3 < 1 15 120 192 2.46 2.29 < 1 < 1 16 138 213 3.47 2.91 6 < 1 17 155 . 238 14.32 8.17 Maximum 155 253 14.32 8.17 6 < 1 Minimum - 120 192 2.46 1.62 < 1 << 1 Average 144 226 4.75 3.31 2 < 1 #Tests 6 6 6 0 6 0 6 6 0 -AC MW-1Sit o 9 Nitrate-Nitrogen &Water Level Chlorides 0.25 5425 40 0.20 5420 30 0.15 5415 m E 20 0.10 5410 10 0.05 5405 0.00 a 5400 0 12 13 14 15 16 17 12 13 14 15 16 17 �--Nitrate --*—Water Level Linear(Nitrate) Chloride Linear(Chloride) Total Dissolved Solids (TDS) Total Phosphorus 500 0.4 400 0.3 300 _j J rn th 0.2 E E 200 0.1 100 0 0.0 12 13 14 15 16 17 12 13 14 15 16 17 --*—TDS Linear(TDS) --*—Total P Linear(Total P) Annual Metals Report ACMW-19 Diamond Valley Ranch Ca Mg K Na Al As Ba Be Ag Cd Cr Cu ACMW-19 06/19/2012 20.5 5.87 2.08 10.3 358 1.2 32.8 <1 <10 <0.5 <1 <20 06/12/2013 21.7 7.01 2.07 9.86 06/05/2014 31.8 10.1 2.35 10.1 255 2.33 103 <2 <1 <1 <2 <4 06/02/2015 18.4 5.77 1.44 7.06 <20 <1 80.0 <1 <0.5 <0.5 <1 <2 08/30/2016 23.9 7.21 2.14 8.44 <20 <1 108 <1 <0.5 <0.5 <1 <2 06/20/2017 25.8 8.08 1.73 9.10 22.8 <1 108 <1 <0.5 <0.5 <1 <2 Fe Hg Mn Mo Ni Pb Se Sb TI V Zn ACMW-19 06/19/2012 611 <0.2 1690 3.08 <5 <2.5 <5 <1 <1 <3 <10 06/05/2014 750 <0.2 4980 <4 <10 <1 <10 <2 <2 <6 <40 06/02/2015 138 <0.2 2400 3.77 <5 <0.5 <5 <1 <1 <3 <20 08/30/2016 212 <0.2 <2 <2 <5 <0.5 <5 <1 <1 <3 <20 06/20/2017 232 <0.2 3380 2.44 <5 <0.5 <5 <1 <1 <3 <20 Cations reported as mg/L.All other metals reported as ug/L. i ALPINE COUNTY POTABLE WATER WELLS Site: GW-05 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2017 Temp Alk Hard Turb Total P TKN NH3-N NO2-N NO3-N Total N Date C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L mg/L 03/07/2017 7.7 6.66 61.3 0.036 0.760 < 0.020 < 0.040 3.88 4.64 06/08/2017 13.1 6.46 59.7 0.040 0.160 < 0.020 < 0.040 3.76 3.92 08/24/2017 15.9 6.62 59.4 0.037 0-.190 0.031 < 0.040 3.63 3.82 11/22/2017 12.1 6.22 59.5 0.039 < 0.090 < 0.020 < 0.030 4.06 3.85 Maximum 15.9 6.66 61.3 0.040 0.760 0.031 < .0.040 4.06 4.64 Minimum 7.7 6.22 59.4 0.036 < 0.090 < 0.020 < 0.030 3.63 3.82 Average 122 6.49 60.0 0.038 0.300 0.023 < 0.038 3.83 4.06 #Tests 4 4 4 0 0 4 . 4 4 4 4 4 Site: GW-05 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2017 Total Fecal TDS EC Chloride COD SO4 Color Coli E.coli Strep Date mg/L umhos mg/L mg/L mg/L Units MPN MPN MPN Comments 03/07/2017 177 262 24.1 10.0 < 1 < 1 06/08/2017 164 254 23.6 10.3 < 1 < 1 08/24/2017 167 243 22.2 9.9 < 1 < 1 11/22/2017 166 250 24.0 10.3 < 1 < 1 Maximum 177 262 24.1 10.3 < 1 < 1 Minimum 164 243 22.2 9.9 < 1 < 1 Average 169 252 23.5 10.1 < 1.0 < 1.0 #Tests 4 4 4 0 4 0 .4 4 0 Site: GW-05 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA From 1981 To: 2017 Temp Alk Hard Turb Total P TKN NH3-N NO2-N NO3-N Total N Year C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L mg/L 81 12.0 6.59 48.0 0.10 0.040 0.177 0.040 0.940 1.120 82 9.8 6.40 47.0 0.040 0.070 0.010 - 0.960 1.030 83 11.1 6.60 49.0 91 1.50 0.040 0.063 0.020 < 0.010 0.840 0.860 84 12.0 6.41 52.0 88 0.22 0.040 0.108 _0.040 < 0.010 0.710 0.830 85 11.5 6.60 55.0 89 0.22 0.034 0.083 0.034 < 0.010 0.808 0.901 86 11.3 6.71 55.0 92 0.32 0.030 0.078 0.028 < 0.010 0.861 0.949 87 11.6 6.63 55.0 97 0.21 0.032 0.086 < 0.020 < 0.010 0.970 1.316 88 11.5 6.51 56.0 111 0.25 0.030 0.105 0.029 < 0.010 1.002 1.117 89 11.1 .6.49 55.0 112 0.25 0.028 0.099 0.037 < 0.010 1.036 1.145 90 11.5 6.74 53.0 126 0.15 0.042 0.097 < 0.020 < 0.010 1.324 1.431 91 11.1 . 6.93 55.0 133 0.19 0.033 0.094 0-.031 0.010 1.421 1.525 92 11.9 6.75 55.0 132 0.28 0.031 0.087 0.024 0.012 1.578 1.678 93 10.6 6.86 56.0 123 0.13 0.031 0.113 0.030 0.012 1.962 2.086 9.4 11.6 6.63 57.0 124 0.24 0.028 0.070 0.023 0.011 2.364 2.445 95 10.9 6.69 59.0 112 0.20 0.050 0.094 0.030 0.010 2.440 2.540 96 12.1 6.56 59.0 111 0.17 0.031 0.109 0.021 0.011 2.926 3.046 97 11.7 6.44 60.0 105 0.21 0.029 0.116 0.021 0.011 3.073 3.201. 98 10.7 6.40 62.0 94 0.53- 0.032 0.131 < 0.021 < 0:010 3.022 3.162 99 11.6 6.33 61.0 93 0.11 0.033 0.139 < 0.020 <. 0.010 3.180 3.329 00 11.2 6.74 62.0 84 0.12 0.037 0.189 0.021 < 0.012 3.585 3.700 01 11.8 6.48 62.0 83 0.15 0.033 0.100 < 0.020 < 0.028 3.388 3.480 02 11.6 6.54 62.0 78 0.02 0.030 0.113 < 0.053 3.303 3.482 03 11.9 6.79 59.1 76 0.02 0.034 0.076 < 0.053 3.295 3.385 04. 11.8 6.67 59.0 80 0.05 0.036 0.124 < 0.030 3.473 3.565 05 11.2 6.62 58.3 79 0.06 0.034 0.101 < 0.030 3.642 3.760 06 11.1 6.63 56.9 77 0.17 0.032 0.066 < 0.032 3.814 3.889 07 10.9 6.63 58.7 82 0.08 0.029 0.067 < 0.035 4.608 4.676 08 11.4 6.67 61.5 89 0.09 0.035 < 0.058 < 0.044 5.179 5.248 09 11.3 6.36 61.5 90 0:06 0.037 < 0.050 < 0.048 5.609 5.682 10 11.3 6.46 60.9 83 0.09 0.037 0.052 < 0.048 5.245 5.329 11 11.5 6.29 61.2 78 0.18 0.040 0.058 < 0.043 4.522 4.545 12 12.3 6.46 62.7 83 0.09 0.037 0.184 < 0.020 < 0.049 4.673 4.822 13 11.6 6.39 62.6 0.039 0.127 0.026 < 0.042 4.864 4.857 14 12.1 6.42 61.8 0.036 0.358 0.025 < 0.040 4.565 4.868 15 12.3 6.45 61.0 0.042 0.108 < 0.020 < 0.040 4.735 4.703 16 11.5 6.48 61.5 0.043 0.255- < 0.020 < 0.050 4.185 4.360 17 12.2 6.49 60.0 0.038 0.300 0.023 < 0.038 3.833 4.058 Maximum 12.3 6.93 62.7 133 1.50 0.050 0.358 0.040 0.053 5.609 5.682 Minimum 9.8 6.29 47.0 76 0.02 0.028 0.050 0.010 < 0.010 0.710 0.830 Average .11.5 6.56 57.9 96 0.21 0.035 0.116 0.025 0.025 2.917 3.030 #Tests 37 37 37 30 31 37 37 27 35 37 37 Site: GW-05 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA From 1981 To: 2017 Total Fecal/ Fecal TDS EC Chloride COD SO4 Color Coli E.coli Strep Year mg/L umhos mg/L mg/L mg/L Units MPN MPN MPN Comments 81 171 238 35.0 1 < 5 3.9 < 2.2 82 187 256 3 5.0 < 2.2 83 155 252 38.0 1 5 < 2.2 < 2.2 84 172 247 34.0 1 < 5 < 2.2 < 2.2 85 171 250 32.9_ 1 < 5 2.6 < 2.2 86 175 255 38.5 2 < 5 2.3 < 2.2 87 188 270 35.8 3 < 5 < 2.2 < 2.2 88 208 310 41.6 5 < 5 < 2.2 < 2.2 89 213 316 42.4 5 < 5 < 2.0 < 2.0 90 233 348 48.2 < 5 < 5 < 2.0 < 2.0 91 251 357 50.8 5 < 5 3.2 < 2.0 92 250 366 49.9 < 5 < 5 3.2 < 2.0 93 245 356 44.6 < 5 < 5 2.3 < 2.0 94 240 365 49.8 < 5 4 4.6 < 2.0 95 222 336 40.0 7 < 5 2.0 < 2.0 96 209 326 37.8 2 5 3.0 1.2 97 194 304 33.9 4 5 1.6 1.0 98 186 291 30.1 < 5 < 5 < 1.1 < 1.1 99 181 279 26.6 < 5 < 5 1.6 1.1 00 174 268 23.6 < 5 10.8 < 5 < 1.1 < 1.1 01 167 256 23.6 < 5 13.1 < 5 1.1 1.1 02 166 251 22.8 < 5 12.2 < 5 < 1.1 < 1.1 03 164 245 24.4 6 11.8 < 5 < 1.1 < 1.1 04 168 252 26.3 < 5 11.7 < .5 < 1.1 < 1.1 05 172 238 28.1 < 5 11.8 < 5 < 1.1 < 1.1 06 174 241 29.5 < 6 11.3 < 5 < 1.1 < 1.1 07 189 281 32.9 < 5 11.8 5 < 1.1 < 1.1 08 195 308 34.3 < 5 12.1 5 < 1.1 < 1.1 09 197 305 34.2 < 5 11.9 5 < 1.1 < 1.1 10 195 296 31.3 11 12.4 < 5 < 1.1 < 1.1 11 183 280 27.7 6 11.8 < 5 < 1.1 < 1.1 12 183 278 28.2 11.7 < 5 < 1.1 < 1.1 13 188 285 29.0 11.5 < 1.1 < 1.1 14 184 283 28.3 11.2 < 1.1 < 1.1 .15 187 287 29.6 11.9 7.3 < 1.0 16 178 277 27.3 11.0 < 1.0 < 1.0 17 169 252 23.5 1.0.1 < 1.0 < 1.0 Maximum 251 366 50.8 11 13.1 5 7.3 2.2 Minimum 155 238 22.8 1 10.1 4 < 1.0 1.0 Average 191 287 33.7 4 11:7 5 2.0 1.5 #Tests 37 37 36 31 18 31 37 37 0 Site GW=.05 Nitrate-Nitrogen Chlorides 10 1 100 9 90 8 80 7 70 6 60 J _j 5 50 , 4 40 3 30 2 20 1 10 0 0 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 --4 Nitrate Linear(Nitrate) t Chloride .Linear(Chloride) Total Dissolved Solids (TDS) Total Coliform Bacteria 500 25 400 20 300 E 15 J p � O E 200 a 10 100 5 0 0 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 --♦—TDS Linear(TDS) ---*--Total Coliforms Linear(Total Coliforms) Annual Metals Report GW-05 Neddenriep Ca Mg K Na Al As Ba Be Ag Cd Cr Cu GW-05 07/20/1988 27 8.6 3.9 9.8 <4 64 <10 <0.1 <10 <20 11/21/1989 30.1 3.8 4.5 12.2 <100 <10 <100 <10 <1 <10 <50 07/05/1990 27.7 10.2 5.3 14.7 <100 <10 <100 <10 <1 <10 <50 08/13/1991 33 12 4.3 13 <50 <4 71 <10 <0.1 <10 <20 06/08/1992 34 10 4 13 <50 <4 72 <10 <0.1 <10 <20 07/12/1994 31 9.6 3.8 16 <50 <2 68 <10 <0.1 <10 <20 11/01/1995 28 8.4 4.1 16 <50 <1 66 <10 <0.1 <10 <10 06/11/1996 28 8.4 3.5 15 72 <1 64 <10 <0.1 <10 <10 06/10/1997 28 9.3 4.4 17 <25 <2 58 <10 <0.5 <10 <25 06/09/1998 21 7.89 3.47 15.7 <25 <2 <100 <10 <0.5 <10 <20 07/06/1999 22.9 7.55 3.72 15.9 <50 <2 <100 <1 <10 <0.1 <10 <20 06/01/2000 21.2 7.2 3.46 14 <2 <100 <10 <20 06/11/2001 19.9 6.16 3.54 15.8 <2 <100 22.9 <20 06/11/2002 19.1 6.26 3.5 16.4 <10 <2 <100 <0.2 <10 <0.2 <1 22.4 06/10/2003 20.2 6.41 3.43 16.2 <10 <2 <100 <0.2 <10 <0.2 <1 <20 06/08/2004 18.3 6.26 3.51 16.1 <10 <2 <100 <0.2 <10 <0.2 <1 <20 06/01/2005 19.1 6.27 3.4 16.6 3.7 <100 <10 <20 06/07/2006 19 6.56 3.55 18.9 <50 <2 <2 <10 <2 <2 <20 06/12/2007 21.6 6.9 3.66 19.7 <20 <2 180 <1 13.8 <0.5 <1 <20 06/18/2008 24.1 7.04 4.02 20.5 <20 <2 53 <1 <10 <0.5 <1 <20 06/09/2009 23.2 7.34 3.9 22.6 <20 <2 55 <1 <10 <0.5 <1 <20 06/08/2010 23 7.3 3.5 21 <20 <1 55 <1 <0.5 <0.5 <1 3.4 06/01/2011 21.1 7.25 3.67 22.2 <20 <1 47.9 <1 <0.5 <0.5 <1 2.56 07/05/2012 17.3 6.12 3.62 20.4 <20 <1 47.8 <1 <10 <0.5 <1 <20 06/11/2013 20.5 6.20 3.68 22.2 07/08/2014 20.8 6.64 3.65 23.7 <20 <1 49.0 <1 <0.5 <0.5 <1 2.41 08/18/2015 20.4 6.76 4.02 25.2 <20 <1 49.1 <1 <0.5 <0.5 <1 2.08 08/16/2016 17.4 5.73 3.45 22.9 <20 <1 46.4 <1 <0.5 <0.5 <1 <2 06/08/2017 15.8 5.38 3.19 20.6 <20 <1 42.5 <1 <0.5 <0.5 <1 <2 Fe Hg Mn MO Ni Pb Se Sb TI V Zn GW-05 07/20/1988 <30 0.2 <10 <1 <1 10 11/21/1989 540 <1 <10 <10 <5 <50 07/05/1990 <100 <1 <10 <10 <5 66 08/13/1991 <30 <0.2 <10 <1 <1 <10 06/08/1992 <30 <0.2 <10 <1 <1 <10 07/12/1994 <30 <0.2 <5 <1 <1 <5 11/01/1995 <30 <0.2 <5 <1, <1 <5 06/11/1996 <30 <0.2 <5 <1 <1 <5 06/10/1997 <50 <0.5 <10 <5 <5 <50 06/09/1998 <30 <0.5 <20 <2.5 <5 17.7 07/06/1999 <50 <0.2 <20 <5 <2.5 <1 <3 <1 <10 06/01/2000 <50 <20 <2.5 <10 06/11/2001 <50 20.5 <2.5 <10 06/11/2002 <50 <0.01 <20 <1 <2.5 <2 <1 <0.2 47.7 06/10/2003 <50 0.01 <20 <1 <2.5 <2 <1 <0.2 73.7 06/08/2004 <50 0.01 <20 <1 <2.5 <2 <1 <0.2 37.7 06/01/2005 <50 <2.5 82.5 06/07/2006 <50 <0.2 <20 <2 <2 <2.5 <10 <2 <1 2 60.6 06/12/2007 <50 <0.2 <20 <2 <5 <2.5 <5 <1 <1 5.1 72.2 06/18/2008 <50 <0.2 <20 <2 <5 <2.5 <5 <1 <1 <3 68.4 06/09/2009 <50 <0.2 <20 <2 <5 <2.5 <5 <1 <1 <3 55.6 06/08/2010 <20 <0.2 2 <2 <5 <0.5 <5 <1 <1 <3 55 06/01/2011 <20 <0.2 <2 <2 <5 <0.5 <5 <1 <1 <3 82.5 07/05/2012 <50 <0.2 <20 <2 <5 <2.5 <5 <1 <1 44 07/08/2014 <20 <0.2 <2 <2 <5 <0.5 <5 <1 <1 3.38 43.5 08/18/2015 <20 <0.2 <2 <2 <5 0.521 <5 <1 <1 <3 77.9 08/16/2016 <20 <0.2 <2 <2 <5 1.65 <5 <1 <1 3.14 123 06/08/2017 <20 <0.2 <2 <2 <5 <0.5 <5 <1 <1 <3 80.0 Cations reported as mg/L.All other metals reported as ug/L. Site: GW-08 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2017 Temp Alk Hard Turb Total P TKN NH3-N NO2-N NO3-N Total N Date C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L mg/L 03/07/2017 12.9 6.52 44.4 0.047 0.050 < 0.020 < 0.060 9.10 9.15 06/08/2017 14.4 6.16 45.7 0.057 < 0.080 < 0.020 < 0.080 8.25 8.10 08/24/2017 19.6 6.29 48.3 0.052 0.160 0.030 < 0.080 7.70 7.86 11/22/2017 12.8 6.19 49.5 0.058 < 0.120 < 0.020 < 0.060- 6.77 5.96 Maximum 19.6 6.52 49.5 0.058 0.160 0.030 < 0.080 9.10 9.15 Minimum 12.8 6.16 44.4 0.047 < 0.050 < 0.020 < 0.060 6.77 5.96 Average 14.9 6.29 47.0 0.054 0.103 < 0.023 < 0.070 7.96 7.77 #Tests 4 4 4 0 0 4 4 4 4 4 4 Site: GW-08 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2017 Total Fecal TDS EC Chloride COD SO4 Color Coli E. coli Strep Date mg/L umhos mg/L mg/L mg/L Units MPN MPN MPN Comments 03/07/2017 220 340 47.8 19.2 < 1.0 < 1 06/08/2017 209 333 46.5 20.1 < 1.0 < 1 08/24/2017 200 312 39.1 17.6 < 1.0 < 1 11/22/2017 206 298 34.4 11.4 < 1.0 < 1 Maximum 220 340 47.8 20.1 < 1.0 < 1 Minimum 200 298 34.4 11.4 < 1 < 1 Average 209 321 42.0 17.1 < 1.0 < 1.0 f #Tests 4 4 4 0 4 0 4 4 0 Site: GW-08 SOUTH TAHOE PUBLIC UTILITY.DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA From 1981 To: 2017 Temp Alk Hard Turb Total P TKN NH3-N NO2-N NO3-N Total N Year C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L mg/L 81 11.4 6.42 39.0 0.80 0.040 0.116 0.020 1.280 1.340 82 9.5 6.30 42.0 0.060 0.134 0.020 1.790 1.920 83 9.9 6.42 48.0 99 1.32 0.030 0.063 0.020 < 0.010 1.530 1.600 84 11.2 6.38 49.0 88 1.69 0.090 0.138 0.030 < 0.010 1.240 1.390 85 10.0 6.50 46.0 84 0.81- 0.049 0.107 0.028 < 0.010 1.081 1.198 86 10.9 6.48 47.0 106 1.50 0.039 0.090 0.020 < 0.010 1.313 1.413 87 12.7 6.56 45.0 100. 1.67 0.055 0.141 < 0.021 < 0.010 1.340 1.844 88 13.9 6.57 45.0 102 1.40 0.039 0.152 0.030 < 0.010 1.536 1.698 89 10.9 6.54 46.0 121 5.22 0.081 0.104 0.024 < 0.010 2.638 2.752 90 12.0 6.79 48.0 103 2.38 0.045 0.102 0.020 < 0.010 3.414 3.525 91 11.7 7.01 52.0 86 0.95 0.074 0.125 .0.033 < 0.010 2.937 3.072 92 12.1 6.76 54.0 85 0.31' 0.038 0.121 0.023 0.010 3.711 3.842 93 11:8 6.95 57.0 72 _ 0.73 0.041 0.125 0.024 0:011 4.054 4.189 94 11.7 6.78 57.0 68 0.54 0.032 0.100 0.028 0.010 4.505 4.615 95 12.2 6.66 58.0 60 2.32 0.050 0.090 0.030 0:010 5.500 5.600 96 13.3 6.52 59.0 58 1.09 0.057 0.207 0.020 0.011 6.526 6.743 97 11.6 6.51 58.0 59 0.51 0.048 0.139 0.020 0.011 6.586 6.738 98 11.5 6.48 57.0 46 1.31 0.048 0.163 < 0.021 < 0.010 4.617 4.791 99 12.0 6.35 51`0 . 42 0.54 0.044 0.111 < 0.020 < 0.010 3.996 4.117 00 12.1 6.77 52.0 48 1.40 0.073 0.198 0.021 < 0.012 5.176 5.295 01 12:5 6.47 50.0 48 3.43 0.073 0.125 0.028 < 0.033 5.142 5.246 02 11.9 6.54 49.0 55 0.36 0.058 0.212 < -0.051 6.282 6.645 03 12.4 7.06 47.6 49 36.70_ 0.077 0.084 < 0.045 5.266 5.383 04 13.0 6.70 50.1 53 4.92 0.113 0.149 < 0.043 5.715 _ 5.872 05 12.3 6.53 49.5 60 2.65 0.046 0.096 < 0.047 7.136 7.218 06 12.3 6.45 51.2 62 8.84 0.056 0.168 < D.067 9.035 9.060 07 13.4 6.26 51.7 60 2.50 0.041 0.089 < 0.091 9.036 9.171 08 13.8 6.46 52.1 55 0.71 0.074 < 0.058 < 0.088 7'759 7.873 09 13.9 6.19 48.5 58 4.74 0.061 < 0.050. < 0.068 7.118 7.210 10 12.9 6.31 48.1 55 0.34 0.069 0.064 < 0.060 6.949 7.180 11 14.0 6.20 49.6 57 0.66 0.045 0.072 < 0.052 7376 7.279 12 14.9 6.24 49.3 62 0.16 0.046 < 0.051 < 0.020 < 0.063 7.544 7.656 .13 14.5 6.20 47.5 0.050 0.652 0.027 < 0.069 7.984 8.275 14 14.7 6.22 47.1 0.049 0.052 0.024 < 0.071 6.683 6.377 15 14.2 6.24 45.6 0.047 0.295 < 0.020 0.055 7.675 7.400 16 13.8 6.35 47.2 0.046 0.138 < 0.020 < 0.080 9.765 9.173 17 14.9 6.29 47.0 0.054 0.103 < 0.023 < 0.070 7.955 7.768 Maximum 14.9 7.06 59.0 121 36.70 . 0.113 0.652 0.033 0.091 9.765 9.173 Minimum 9.5 6.19 39.0 42 0.16 0.030 < 0.050 0.020 < 0.010 1.081 1.198 Average 12.5 6.50 49.8 70 2.98 0.055 0.135 0.023 0.035 5.113 5.202 #Tests 37 37 37 30 31 37 37 27 35 37 37 Site: GW-08 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA From 1981 To: 2017 Total Fecal/ Fecal TDS EC Chloride COD SO4 Color Coli E.coli Strep Year mg/L umhos mg/L mg/L mg/L Units MPN MPN MPN Comments 81 237 351 45.0 2 < 5 5.6 < 2.2 82 206 326 3 7.7 < 2.2 83 188 303 44.0 2 < 5 13.2 6.8 90 84 177 285 41.0 2 < 5 14.5 2.1 7.1 85 180 286 41.5 1 < 5 2.7 < 2.2 < 2.2 86 227 350 51.6 2 < 5 < 2.2 < 2.2 < 2.2 87 211, 344 45.6 3 < 5 < 2.2 < 2.2 < 2.2 88 221 365 51.3 6 < 5 5.1 < 2.2 89 242 389 54.0 5 < 5 < 2.0_ < 2.0 90 234 379 48.2 < 5 < 5 3.9 < 2.0 91 210 343 43.7 < 5 < 5 4.5 < 2.0 92 214 364 48.7 < 5 < 5 3.4 < 2.0 93 203. 336 37.5 13 < 5 3.8 < 2.0 y 94 193 319 39.1 < 5 4 4.3 < 2.0 95 181 303 33.9 6 5 5.8 < 2.0 96 189 298 29.7 2 5 12.7 1.2 97 181 291 28.6 4 5 1.7 1.0 98 162 255 23.7 < 5 < 5 5.2 < 1.1 99 146 230 20.9 < 5 < 5 4.9 < 1.1 00 161 252 26.0 < 5 9.54 < 5 1.1 < 1.1 01 160 251 26.9 < 5 9.63 5 1.4 < 1.1 02 178 276 31.2 < 5 10.79 5 1.2 < 1.1 03 176 275 33.2 5 10.99 13 1.3 < 1.1 04 177 271 32.6 5 11.72 a 1.6 < 1.1 05 192 282 37.0 < 5 12.11 < 5 2.7 < 1.1 06 209 307 38.7 6 12.95 < 5 8.3 < 1.1 07 205 317 37.3 < 5 14.64 8 7.1 < 1.1 08 192 300 35.4 < 5 14.71 5 3.9 < 1.1 09 185 291 34.3 < 5 13.18 < 5 3.6 < 1.1 10 186 288 32.6 9 13.89 < 5 3.7 < 1.1 11 190 300 34.1 6 12.80 < 5 2.3 < 1.1 12 195 294 35.8 14.05 5 < 1.1 < 1.1 13 193 296 35.5 16.05 1.9 < 1.1 14 185 285 34.5 19.09 < 1.1 < 1.1 15 192 311 40.6 18.43 < 1.0 < 1.0 16 208 327 43.8 20.03 < 1.0 < 1.0 17 209 321 42.0 17.08 < 1.0 < 1.0 Maximum 242 389 54.0 13 20.03 13 14.5 6.8 90.0 Minimum 146 230 20.9 1 9.54 4 1.0 1.0 < 2.2 Average 194 307 37.7 5 13.98 5 4.1 1.6 20.7 #Tests 31 37 36 31 18 31 37 37 5 Sit e GW, 08 Nitrate-Nitrogen Chlorides 10 100 9 90 8 80 7 70 6 60 J J E 5 E 50 4 40 3 30 2 20 1 10 0 . . . . . 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 0 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 OS 06 07 08 09 10 11 12 13 14 15 16 17 �-Nitrate Linear(Nitrate) —t-Chloride Linear(Chloride) Total Dissolved.Solids (TDS) Total Coliform Bacteria 500 25. 400 20 300 15 -� O C CD E 200 a 10 100 5 0 0 81828384858687888990919293949596979899000102030405060708091011121314151617 81828384858687888990919293949596979899000102030405060708091011121314151617 -TDS Linear(TDS) Total Coliforms - Linear(Total Coliforms) Annual Metals Report GW-08 Arant Ranch house Ca Mg K Na Al As Ba Be Ag Cd Cr Cu GW-08 07/20/1988 23 7.8 4.2 25 <4 58 <10 <0.1 <10 <20 11/21/1989 24.7 2.2 1.3 28.4 <100 <10 <100 <10 <1 <10 <50 07/05/1990 23.1 8.4 5.6 35.8 <100 <10 <100 <10 <1 <10 <50 08/13/1991 17 6.4 4 28 <50 <4 46 <10 <0.1 <10 26 06/16/1992 26 8.5 4.5 46 <50 <4 65 <10 <0.1 <10 <20 07/12/1994 16 5.2 3.3 32 <50 <2 41 <10 <0.1 <10 <20 11/01/1995 15 5.1 3.9 36 <50 <1 48 <10 <0.1 <10 71 06/11/1996 16 5.3 3.5 36 81 <1 44 <10 0.1 <10 67 06/10/1997 15 5.5 4.2 38 <25 <2 <50 <10 <0.5 <10 40 08/04/1998 11.1 3.42 2.96 30.8 <25 <2 <100 <10 <0.5 <10 90.2 07/06/1999 9.83 3.51 3.09 30.4 <50 <2 <100 <1 <10 <0.1 <10 <20 06/01/2000 11.7 4.61 3.28 32.1 <2 <100 <10 67.5 06/11/2001 10.1 3.86 3.26 29.8 <2 <100 18.2 43.8 06/11/2002 13.2 4.6 3.64 36.4 <10 <2 <100 <0.2 <10 <0.2 <1 34 06/10/2003 12.7 4.35 3.44 33.1 <10 <2 <100 <0.2 <10 <0.2 <1 72.4 06/08/2004 10.6 4.04 3.41 30 <10 <2 <100 <0.2 <10 <0.2 <1 59.5 06/01/2005 12.1 4.05 3.51 33.7 3.78 <100 <10 244 06/07/2006 16.4 5.95 4.14 37.9 <50 <2 <2 <10 <2 <2 182 06/12/2007 15.7 5.47 4 37.2 <20 <2 47 <1 <10 <0.5 <1 183 06/18/2008 16.4 5.02 4.12 35.7 <20 <2 48 <1 <10 <0.5 <1 <20 06/09/2009 14 4.8 3.79 33.7 <20 <2 40 <1 <10 <0.5 <1 21 06/08/2010 15 5.1 3.5 33 <20 <1 41 <1 <0.5 <0.5 <1 23 06/01/2011 15.6 5.77 3.75 37.5 <20 <1 42.7 <1 <0.5 <0.5 <1 77.8 07/05/2012 11.8 4.13 3.52 30.7 <20 <1 34.8 <1 <10 <0.5 <1 36.1 06/11/2013 14.4 4.70 3.84 35.1 07/08/2014 14.1 4.91 3.72 35.8 <20 1.14 38.3 <1 <0.5 <0.5 <1 13.9 08/18/2015 13.8 4.92 3.61 33.9 <20 <1 41.0 <1 <0.5 <0.5 <1 13.8 08/16/2016 14.3 5.12 3.58 34.4 <20 <1 39.8 <1 <0.5 <0.5 <1 5.67 06/08/2017 14.4 5.31 3.67 35.7 <20 <1 45.4 <1 <0.5 <0.5 <1 16.9 Fe Hg Mn Mo Ni Pb Se Sb TI V Zn GW-08 07/20/1988 560 <0.2 .37 <1 <1 20 11/21/1989 <100 <1 <10 <10 <5 <50 07/05/1990 230 <1 22 <10 <5 64 08/13/1991 76 <0.2, <10 2 <1 12 06/16/1992 67 <0.2 10 <1 <1 18 07/12/1994 <30 <0.2 <5 <1 <1 <5 11/01/1995 470 0.5 8.2 <1 <1 58 06/11/1996 2100 <0.2 14 7.9 <1 84 06/10/1997 82 <0.5 <10 <5 <5 <50 08/04/1998 903 <0.5 <20 <2.5 <5 46.6 07/06/1999 60.1 <0.2 <20 <5 <2.5 <1 <3 <1 13.2 06/01/2000 90 <20 <2.5 17 06/11/2001 452 <20 <2.5 50.1 06/11/2002 81.6 <0.01 <20 <1 <2.5 <2 <1 <0.2 <10 06/10/2003:, 99.3 <0.01 <20 <1 <2.5 <2 <1 <0.2 12 06/08/2004 279 0.02 <20 <1 <2.5 <2 <1 <0.2 <10 06/01/2005 1110 2.84 27.5 06/07/2006 314 <0.2 <20 <2 2 <2.5 <10 <2 <1 <2 20 06/12/2007 211 <0.2 31.4 <2 <5 <2.5 <5 <1 <1 <3 149 06/18/2008 267 <0.2 <20 <2 <5 <2.5 <5 <1 <1 <3 66.3 06/09/2009 105 <0.2 <20 <2 <5 <2.5 <5 <1 <1 <3 18.3 06/08/2010 84 <0.2 2.1 <2 <5 1.1 <5 <1 <1 <3 <20 06/01/2011 490 <0.2 14 <2 <5 3.81 <5 <1 <1 <3 <20 07/05/2012 <50 <0.2 <20 <2 <5 <2.5 <5 <1 <1 <10 07/08/2014 <20 <0.2 <2 <2 <5 <0.5 <5 <1 <1 3.32 68.1 08/18/2015 <20 <0.2 <2 <2 <5 <0.5 <5 <1 <1 <3 76.1 08/16/2016 <20 <0.2 <2 <2 <5 <0.5 <5 <1 <1 <3 75'.9 06/08/2017 23.8 <0.2 2.63 <2 <5 <0.5 <5 <1 <1 <3 32.0 Cations reported as mg/L.All other metals reported as ug/L. Site: GW-11 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY-DATA 2017 Temp Alk Hard Turb Total P TKN NH3-N NO2-N NO3-N Total N Date C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L mg/L 02/15/2017 11.5 7.37 71.7 0.052 < 0.050 < 0.020 < 0.010 0.540 0.450 05/10/2017 13.7 7.07 71.3 0.053 < -0.100 < 0.020 < 0.010 0.520 0.468 07/27/2017 20.1 7.16 69.7 0.065 < 0.050 0.020 < 0.010 0.435 0.381 11/14/2017 12.8 7.16 74.2 0.055 < 0.100 < 0.020 < 0.010 0.391 0.307 Maximum 20.1 7.37 74.2 0.065 < 0.100 < 0.020 < 0.010 0.540 0.468 Minimum 11.5 7.07 69.7 0.052 < 0.050 < 0.020 < 0.010 0.391 0.307 Average 14.5 7.19 71.7 0.056 < 0.075 < 0.020 < 0.010 0.472 0.402 #Tests 4 4 4 0 0 4 4 4 4 4 4 Site: GW-11 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2017 Total Fecal TDS EC Chloride COD SO4 Color Coli E. coli Strep Date mg/L umhos mg/L mg/L mg/L Units MPN MPN MPN Comments 02/15/2017 123 141 1.060 0.718 < 1 < 1 05/10/2017 121 131 1.040 0.767 < 1 < 1 07/27/2017 108 145 0.981 0.642 < 1 < 1 11/14/2017 118 150 0.991 0.831 < 1 < 1 Maximum 123 150 1.060 0.831 < 1 < 1 Minimum 108 131 0.981 0.642 < 1 < 1 Average 118 142 1.018 0.740 < 1.0 < 1.0 #Tests 4 4 4 0 4 0 4 4 0 Site: GW-11 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA From 1981 To: 2017 Temp Alk Hard Turb Total P TKN NH3-N NO2-N NO3-N Total N Year C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L mg/L 81 11.0 6.60 42.0 0.040 0.030 --0.020 0.570 0.600 82 10.2 6.34 41.0 0.040 0.056 0.020 1.290 0.960 83 9.9 6.53 43.0 60 0.15 0.040 0.058 0.020 < 0.010 1.100 1.130 84 9.9 6.32 44.0 38 0.33 0.030 0.085 0.030 < 0.010 0.490 0.580 85 10.5 6.49 46.0 37 0.31 0.031 0.055 0.023 < 0.010 0.500 0.565 86 9.9 6.63 46.0 36 0.19 0.032 0.053 0.022 < 0.010 l 0.588 0.646 87 10.3 6.74 45.0 35 0.11 0.028 0.069 < 0.020 < 0.010 0.370 0.582 88 10.1 6.47 46.0 35 0.17 0.029 0.070 0.033 < 0.010 0.308 0.388 89 11.0 6.60 46.0 35 0.16 0.027 0.048 0.023 < 0.010 0.522 0.580 90 10.7 .7.09. 43.0 39 0.18- 0.035 0.063 0.020 < 0.010 0.336 0.409 91 11.5 7.04 44-.0 34 1.76 0.034 0.072 0.027 0.010. 0.268 0.350 92 12.4 6.83 46.0 34 0.28 0.030 0.063 0.022 < 0.011 0.325 0.399 93 11.3 6.94 40.0 32 0.14 0.037 0.091 0.026 0.011 0.213 0.314 94 12.3 6.66 41.0 33 0.30 0.023 - 0.070 0.023 0.010 0.206 0.286 95 12.3 6.66 39.0 30 0.55 0.030 0.269 0.210 0.010 0.250 0.530 96 13.5 6.46 42.0 34 0.33 0.028 0.094 0.025 0.011 0.386 0.491 97 13.6 6.57 45.0 38 0.13 0.029 0.094 0.021 0.011 0.524 0.631 98 14.0 6.24 47.0 39 0.45 0.026- 0.117 < 0.021 < 0.010 0.421 0.549 99 14:8 6.23 46.0 40 0.14 0.022 0.108 < 0.020 < 0.010 0.402 0.602 00 13.4 6.98 58.0 48 0.26 0.027 0.114 0.021 < 0.010 0.408 0.480 01 15.0 7.07 77.0 57 0.12 0.048 0.131 < 0.020 < 0.010 0.454 0.600 -02 14.5 7.05 77.0 56 0.02 0.058 0.178 < 0.010 0.454 0.638 03 14.9 7.25 74.2 56 0.08 0.047 0.073 < 0.010 0.482 0.536 04 14.0 7.23 73.0 56 0.08 0.054 0.110 < 0.010 0.505 0.624 05 14.9 7.10 73.9 56 0.22 0.040 < 0.083 < 0.010 0.469 0.558 06 15.0 7.11 72.0 51 0.13 0.044 < 0.079 < 0.010 0.483 0.577 07 16.2 7.23 73.8 51 0.08 0.042 0.084 < 0.010 0.475 0.527 08 16.2 7.26 74.4 55 0.40 0.044 -0.060 < 0.010 0.475 0.511 09 13.2 6.99 72.8 56 0.19 0.049 < 0.050 < 0.010 0.512 0.547 10 13.3 7.24 72.7 53 0.09 0.050 0.051 < 0.010 0.516 0.590 11 14.0 6.96 72.3 54 0.24 0.042 0.082 < 0.010 0.454 0.426 12 13.7 7.11 72.1 56 0.26 0.044 0-049 < 0.020 < 0.010 0.526 0.555 13 14.8 7.04 71.7 0.056 < 0.050 0.027 < 0.009 0.491 0.499 14 13.7 7.00 70.9 0.047 0.056 0.027 0.010 0.503 0.496 15 13.5 6.97 71.2 0.047 < 0.050 < 0.020 < 0.010 0.520 0.514 16 14.5 6.76 70.9 0.053 < 0.063 < 0.020 < 0.010 0.477 0.480 17 14.5 7.19 71.7 0.056 < 0.075 < 0.020 . < 0.010 0.472 0.402 Maximum 16.2 7.26 77.0 60 1.76 0.058 0.269 0.210 0.011 1.290 1.130 Minimum 9.9 6.23 39.0' 30 0.02 0.022 0.030 0.020 0.009 0.206 0.286 Average 12.9 6.84 57.6 44 0.26 0.039 0.081 0.030 0.010 0.480 0.545 #Tests 37 37 37 30 30 37 37 27 35 37 37 Site: GW-11 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA From 1981 To: 2017 Total Fecal/ Fecal TDS EC Chloride COD SO4 Color Coli E.coli Strep Year mg/L umhos mg/L mg/L mg/L Units MPN MPN MPN Comments 81 82 90 < 1 < 2.2 < 2.2 82 81 106 1 < 2.2 < 2.2 83 60 99 3.000 2 8 < 2.2 < 2.2 84 65 96 2.000 1 < 5 < 2.2. < 2.2 85 68 96 1.500 1 < 5 < 2.2 < 2.2 86 67 96 1.400 1 < 5 < 2.2 < 2.2 87 73 92 1.100 3 < 5 < 2.2 < 2.2 88 74 96 1.100 5 < 5 < 2.2 < 2.2 89 71 95 1.200 6 < 5 < 2.0 < 2.0 90 79 94 1.000 < 5 < 5 < 2.0 < 2.0 91 75 94 1.000 < 5 < 5 < 2.0 < 2.0 92 72 95 1.000 < 5 < 5 < 2.0 < 2.0 93 70 87 1.000 < 5 < 5 < 2.0 < 2.0 94 70 91 0.900 < 5 4 < 2.0 < 2.0 95 68 83 0.900 < 5 < 5 < 2.0 < 2.0 96 73 90 0.900 2 5 1.2 1.2 97 77 96 1.300 4 5 1.0 1.0 98 81 101 0.900 < 5 < 5 < 1.1 < 1.1 99 78 99 1.000 < 5 < 5 < 1.1 < 1.1. 00 95 120 0.900 < 5 0.850 < 5 < 1.1 < 1.1 01 115 151 0.800 < 5 0.790 < 5 < 1.1 < 1.1 02 116 147 0.700 < 5 1.310 < 5 < 1.1 < 1.1 03 118 146 0.754 < 5 0.772 < 5 < 1.1 < 1.1 04 117 144 0.740 < 5 0.783 < 5 < 1.1 < 1.1 05 117 138 0.796 < 5 0.939 < 5 < 1.1 < 1.1 06 116 139 0.695 < 6 0.752 < 5 < 1.1 < 1.1 07 116 141 0.715 < 5 0.745 < 5 < 1.1 < 1.1 08 117 139 0.988 < 5 0.766 < 5 < 1.1 < 1.1, 09 115 142 0.909 < 5 0.751 < 5 < 1.1 < 1.1 10 117 145 0.788 11 0.847 < 5 < 1.1 < 1.1 11 113 145 0.771 6 0.678 < 5 < 1.1 < 1.1 12 114 142 0.838 0.710 < 5 < 1.1 < 1.1 13 116 141 0.762 0.654 < < 1.1 . < 1.1 14 113 145 0.953 0.747 < 1.1 < 1.1 15 118 147 1.010 0.722 7.2 < 1.0 16 , 117 149 0.971 0.774 < 1.0 < 1.0 17 118 142 1.018 0.740 < 1.0 < 1.0 Maximum 118 151 3.000 11 1.310 8 7.2 2.2 Minimum 60 83 0.695 < 1 0.654 4 1.0 1.0 Average 93 118 1.037 4 0.796 5 1.7 1.5 #Tests 37 37 35 31 18 30 37 37 0 Site GW=1 1 - Nitrate-Nitrogen Chlorides 5 50 4 40 .3 30 ,J J E E 2 20 1 10 0 0 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 —�Nitrate Linear(Nitrate) t Chloride Linear(Chloride) Total Dissolved Solids (TDS) Total Coliform Bacteria 500 25 400 20 1 300 E 15 0 o E 200 a 10 100 5 0. 0 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 —+—TDS Linear(TDS) Total Coliforms Linear(Total Coliforms) Annual Metals Report GW-11 Diamond Valley School Ca Mg K Na All As Ba Be Ag Cd Cr Cu GW-11 07/20/1988 9.5 2.5 1.1 5.1 <4 20 <10 <0.1 <10 <20 11/21/1989 13.2 1.6 1.6 10.4 <100 <10 <100 <10 <1 <10 <50 07/05/1990 9.1 2.5 2.1 6.9 <100 <10 <100 <10 <1 <10 <50 08/13/1991 9.3 2.5 1.3 5.2 <50 <4 23 <10 <0.1 <10 100 06/08/1992 9.5 2.3 1.1 6.4 <50 <4 21 <10 <0.1 <10 40 07/12/1994 8.8 2.1 1.1 5.2 54 <2 24 <10 <0.1 <10 35 11/08/1995 8 1.9 1.3 4.9 <50 <1 22 <i0 <0.1 <10 86 06/11/1996 8.7 2 1.2 5 190 <1 24 <10 <0.1 <10 68 06/10/1997 11 2.8 1.3 6.9 <25 <2 <50. <10 <0.5 <10 140 06/09/1998 7.8 2.42 1.24 5.05 <25 <2 <100 <10 <0.5 <10 250 07/06/1999 10.5 2.39 1.32 5.72 <50 <2 <100 <1 <10 <0.1. <10 226 06/01/2000 9.05 2.47 1.26 5.6 <2 180 <10 219 06/11/2001 13 4.85 1.68 9.48 <2 <100 14.1 30.8 06/11/2002 13 4.86 1.42 9.79 <10 <2 <100 <0.2 <10 <0.2 <1 31.5 06/10/2003 13.3 4.88 1.57 9.33 <10 <2 .100 <0.2 <10 <0.2 <1 43.7 06/08/2004 12.3 4.62 1.41 9.18 <10 <2 <100 <0.2 <10 <0.2 <1 27.1 06/01/2005 12.9 4.68 1.48 9.13 3.54 <100 <10 27.5 06/07/2006 12.6 4.32 1.48 10.1 <50 <2 <2 <10 <2 <2 30.2 06/12/2007 13.4 4.86 1.59 9.13 <20 <2 31 <1 <10 <0.5 <1 40.2 06/18/2008 15.4 4.59 1.62 10.2 <20 <2 34 <1 <10 <0.5 <1 <20 06/09/2009 13.4 4.94 1.51 9.83 <20 <2 32 <1 <10 <0.5 <1 28 06/08/2010 14 5.2 1.5 10 <20 <1 32 <1 <0.5 <0.5 1.1 11 06/01/2011 13.6 5.35 1.64 8.99 <20 <1 28.6 <1 <0.5 <0.5 <1 23.7 07/05/2012 12.3 4.34 1.59 8.72 <20 <1 31.2 <1 <10 <0.5 <1 81.9 06/18/2013 12.5 4.14 1.44 9.23 06/17/2014 13.6 5.01 1.63 9.79 <20 <1 35.1 <1 <0.5 <0.5 <1 33.1 07/15/2015 14.1 5.07 1.58 9.25 <20 <1 29.4 <1 <0.5 <0.5 <1 17.6 08/10/2016 13.1 4.85 1.52 8.64 <20 <1 29.3 <1 <0.5 <0.5 <1 22.0 07/27/2017 12.6 4.54 1.55 8.01 <20 <1 28.6 <1 <0.5 <0.5 <1 21.0 Fe Hg Mn MO Ni Pb Se Sb TI V Zn GW-11 07/20/1988 <30 <0.2 <10 <1 <1 14 11/21/1989 <100 <1 <10 <10 <5 <50 07/05/1990 <100 <1 <10 <10 <5 <50 08/13/1991 33 <0.2 <10 1 <1 12 06/08/1992 <30 <0.2 <10 <1 <1 71 07/12/1994 <30 <0.2 <5 <1 <1 51 11/08/1995 50 <0.2 <5 <1 <1 14 06/11/1996 38 <0.2 <5 <1 <1 9.4 06/10/1997 <50 <0.5 <10 <5 <5 <50 06/09/1998 <30 <0.5 <20 <2.5 <5 15.5 07/06/1999 <50 <0.2 <20 <5 <2.5 <1 <3 <1 <10 06/01/2000 <50 <20 <2.5 57.2 06/11/2001 <50 25.3 <2.5 250 06/11/2002 <50 <0.01 <20 <1 <2.5 <2 <1 <0.2' 123 06/10/2003 <50 0.01 <30 <1 <2.5 <2 <1. <0.2 205 06/08/2004 <50 0.02 <20 <1 <2.5 <2 <1 <0.2 130 06/01/2005 <50 <2.5 200 06/07/2006 83.3 <0.2 <20 <2 <2 <2.5 <10 <2 <1 2 95 06/12/2007 <50 <0.2 <20 <2 <5 <2.5 <5 <1 <1 <3 85.8 06/18/2008 <50 <0.2 <20 <2 <5 <2.5 <5 <1 <1 <3 52.8 06/09/2009 <50 <0.2 <20 <2 <5 <2.5 <5 <1 <1 <3 47.7 06/08/2010 <20 <0.2 <2 <2 <5 <0.5 <5 <1 <1 <3 45 06/01/2011 <20 <0.2 <2 <2 <5 0.868 <5 <1 <1 <3 92.7 07/05/2012 <50 <0.2 <20 <2 <5 <2.5 <5 <1 <1 59.3 06/17/2014 <20 <0.2 <2 <2 <5 <0.5 <5 <1 <1 <3 60.7 07/15/2015 <20 <0.2 <2 <2 <5 <0.5 <5 <1 <1 <3 51.1 08/10/2016 <20 <0.2 <2 <2 <5 <0.5 <5 <1 <1 <3 44.8 07/27/2017 <20 <0.2 <2 <2 <5 <0.5 <5 <1 <1 <3 30.9 Cations reported as mg/L.All other metals reported as ug/L. Site: GW-17 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2017 Temp Alk Hard Turb Total P TKN NH3-N NO2-N NO3-N Total N Date C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L mg/L 02/15/2017 12.1 7.17 77.1 0.012 0.131 0.058 < 0.010 < 0.010 0.131 05/10/2017 15.6 6.23 62.5 0:026 < 0.100 < 0.020 < 0.010 0.597 0.528 07/27/2017 15.0 6.21 61.0 0.063 < 0.050 < 0.020 < 0.010 0.842 0.771 11/14/2017 15.5 6.92 71.5 0.015 0.145 0.037 < 0.010 < 0.010 0.145 Maximum 15.6 7.17 77.1 0.063 0.145 0.058 < 0.010 0.842 0.771 Minimum 12.1 6.21 61.0 < 0.012 < 0.050 < 0.020 < 0.010 < 0.010 0.131 Average 14.6 6.63 68.0 0.029 0.107 0.034 < 0.010 0.365 0.394 #Tests 4 4 4 0 0 4 4 4 4 4 4 Site: GW-17 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2017 Total Fecal TDS EC Chloride COD SO4 Color Coli E.coli Strep Date mg/L umhos mg/L mg/L mg/L Units MPN MPN MPN Comments 02/15/2017 96 162 1.81 1.03 < 1 < 1 05/10/2017 108 119 1.95 1.33 < 1 < 1 07/27/2017 102 132 1.80 1.15 < 1 < 1 4 11/14/2017 102 146 1.73 0.90 < 1 < 1 Maximum 108 162 1.95 1.33 < 1 < 1 Minimum 96 119 1.73 0.90 < 1 < 1 Average- 102 140 1.82 .1.10 < 1.0 < 1.0 #Tests 4 4 4 0 4 0 4 4 0 Site: GW-17 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA From 2014 To: 2017 9 Temp Alk Hard Turb Total P TKN NH3-N NO2-N NO3-N Total N Year C pH mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L mg/L 14 13.6 6.52 66.5 0.023 0.064 0.038 < 0.010 0.417 0.445 15 13.1 6.55 66.2 0.019 0.057 0.022 < 0.010 0.667 0.607 16 13.2 6.48 66.8 0.027 0.080 0.032 < 0.010 0.407 0.433 17 14.6 6.63 68.0 0.029 0.107 0.034 < 0.010 0.365 0.394 Maximum 14.6 6.63 68.0 0.029 0.107 0.038 < 0.010 0.667 0.607 Minimum 13.1 6.48 66.2 0.019 0.057 0.022 < 0.010 0.365 0.394 Average 13.6 6.55 66.9 0.024 0.077 0.032 < 0.010 0.464 0.470 #Tests 4 4 4 0 0 4 4 4 4 4 4 Site:_ GW-17 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA From 2014 To: 2017 Total Fecal/ Fecal TDS EC Chloride COD SO4 Color Coli E. coli Strep Year mg/L-- umhos mg/L mg/L mg/L Units MPN MPN MPN Comments 14 111 147 3.55 1.74 < 1.1 < 1.1 Well installed in 2014 15 110 150 2.25 1.71 < 1.0 < 1.0 16 107 156 2.13 1.33 < 1.0 < 1.0 17 102 140 1.82 1.10 < 1.0 < 1.0 Maximum 111 156 3.55 1.74 < i.1 < 1.1 Minimum 102 140 1.82 1.10 < 1.0 < 1.0 Average 107 148 2.44 1.47 < 1.0 < 1.0 #Tests 4 4 4 0 4 0 4 4 0 Site GW=1 7 Nitrate-Nitrogen Chlorides 5 50 4 40 3 30 J J E E 2 20 1 10 0 0 14 15 16 17 14 15 16 17 �—Nitrate Linear(Nitrate) t Chloride Linear(Chloride) Total Dissolved Solids (TDS) Total Coliform Bacteria 500 25 400 20 300 E 15 J O C) O E 200 a 10 100 5 0 0 14 15 16 17 14 15 16 17 �—TDS Linear(TDS) —Total Coliforms Linear(Total Coliforms) Annual Metals Report GW-17 Diamond Valley Ranch House Well Ca Mg K Na Al As Ba ..Be Ag Cd Cr Cu GW-17 09/30/2013 12 3.3 1.8 11 480 <2 52 <2 <2 <2 <2 <2 10/01/2013 19 8.0 6.0 32 17000 2 500 2 <2 <2 7 46 10/02/2013 17 4.7 1.5 15 2400 <2 64 <1 <2 <2 <2 6 08/12/2014 12.6 3.51 1.82 11.2 <20 <1 47.3 <1 <0.5 <0.5 <1 6.68 07/15/2015 12.3 3.32 1.75 9.54 <20 <1 43.4 <1 <0.5 <0.5 <1 <10 08/10/2016 11.8 3.39 1.66 9.33 <20 <1 45.0 <1 <0.5 <0.5 <1 5.09 07/27/2017 11.5 3.20 1.58 8.81 <20 <1 43.9 <1 <0.5 <0.5 <1 3.10 Fe Hg Mn MO Ni Pb Se Sb TI V Zn GW-17 09/30/2013 360 0.2 37 <2 <2 <10 <2 1 <2 100 10/01/2013 16000 <0.1 790 6 22 <10 2 <1 14 220 10/02/2013 880 <0.1 44 <2 <2. <10 <2 <1 <2 250 10/23/2013 1380 10/25/2013 98.2 08/12/2014 374 <0.2 10.5 <2 <5 0.976 <5 <1 <1 <3 532 07/15/2015 206 <0.2 12.6 <2 <5 <0.5 <5 <1 <1 <3 521 11/18/2015 10500 08/10/2016 196 <0.2 4.45 <2 <5 <0.5 <5 <1 <1 <3 239 07/27/2017 284 <0.2 4.88 <2 <5 <0.5 <5 <1 <1 <3 120 Cations reported as mg/L.All other metals reported as ug/L. ALPINE COUNTY SURFACEWATERS Site: SW-01 SOUTH TAHOE-PUBLIC UTILITY DISTRICT Stream: Carson R Woodfords ALPINE COUNTY SURFACEWATER QUALITY DATA - 2017 Temp Alkalinity Turbidity SS TDS. EC Chloride Total P PO4-P Boron K Date C pH mg/L. NTU mg/L mg/L umhos mg/L mg/L mg/L mg/L mg/L 01/18/17 1.6 6.83 26.6 2.30 4.48 47 62 1.83 0.023 0.010 1.05 02/01/17 1.5 6.80 30.8 1.10 1.31 67 71 1.78 0.010 < 0.010 1.10 03/01/17 0.6 7.61 32.3 1.00 1.82 67 78 2.37 0.013 0.011 1.17 04/04/17. 2.7 7.09 25.9 2.00 4.15 50 54 1.06 0.020 < 0.010 0.88 05/03/17 5.8 7.00 21.6 9.00 28.50 50 42 0.51 0.058 < 0.010 0.92 06/07/17 9.8 7.92 20.6 5.80 16.80 37 42 < 0.50 0.050 0.013 0.90 07/12/17 9.1 6.33 21.6 2.50 6.30 35 43 < 0.50 0.036 < 0.010 < 1.00 08/01/17 12.1 7.26 27.1 1.90 3.64 45 55 < 0.50 0.026 < 0.010 1.10 09/07/17 13.6 6.42 32.3, 1.90 2.01 52 53 0.64 0.026 0.010 1:00 10/11/17 6.7 7.36 30.9 1.40 1.53 47 59 0.63 0.015 < 0.010 < 1.00 11/01/17 3.9 6.94 35.1 0.73 0.42 63 74 0.85 0.021 < 0.010 1.38 12/05/17 0.3 7.62 33.0 1.20 1.31 57 69 1.07 0.013 < 0.010 < 1.00 Maximum 13.6 7.92 35.1 9.00 28.50 _ 67 78 2.37 0.058 0.013 1.38 Minimum 0.3 6.33 20.6 0.73 0.42 35 42 < 0.50 0.010 < 0.010 0.88 Average 5.6 7.10 28.2 2.57 6.02 51 58 1.02 0.026 0.010 1.04 #Tests 12 12 12 12 12 12 12 12 12 12 0 12 Site: SW-01 SOUTH.TAHOE PUBLIC UTILITY DISTRICT Stream: Carson R Woodfords ALPINE COUNTY SURFACEWATER QUALITY DATA 20.17 v Oil& _ TKN N.H3-N NO2-N NO3-N Total N COD BOD Grease Ca Mg Na SAR Na Date mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L % 01/18/17 0.152 < 0.020 < 0.010 0.041 0.193 6.81 1.72 3:22 0.290 21.60 02/01/17 0.162 < 0.020 < 0.010 0.022 0.184.- 7.43 1.95 3.64 0.310 22.10 03/01/17 0.121 < 0.020 <- 0.010 0.021 0.142 8.00 2.01 3.95 0.320 22.40 04/04/17 0.103 < 0.020 < 0.010 < 0.010, 0.103 5.86 1.47 2.92.. 0.280 22.60 05/03/17 0.144 < 0.020 < 0.010 < 0.010 0.144 5.10 1.44 2.26 0.230 19.90 06/07/17 0.127 < 0.020 < 0.010 < 0:010 -0.127 4.71 1.31 1.92 0.200 18.60 07/12/17 0.114 < 0,020 <- 0.010 < 0.010 0.114 5:25 1.31 2.02 0.200 18.20 08/01/17 0.122 0.032 < 0.010 < 0.010 0.122 6.30 1.70 2.69 0.250 19.50- 09/07/17 0.160 < 0.020 < .0.010 < 0.010 0.160- 7.06 1.80 3.26 0.280 21.20 10/11/17 0.198 0.042 < 0.010 < 0.010 0.198 6.08 1.52 3.17 0.300 23.30 .11/01/17 0.144 < 0.020 < 0.010 < 0.010 0.144 8.13 2.18 4.18 0.340 22.70 12/05/17 0.164 < 0.020 < 0.010 0.013 0.177 7.58 1.97 3.50 0.290 21.20 Maximum 0.198 0.042 < 0.010 0.041 0.198 8.13 2.18 4.18 0.340 23.30 Minimum < 0.103 < 0.020 < 0.010 < 0.010 0.103 4.71 1.31 1.92 0.200 18.20 Average 0.143 0.023 < 0.010 0.015 0.151 6.53 1.70 3.06 0.274 21.11 #Tests 12 12 12 12 12 0 0 0 12 12 12 12 12 Site: . SW-01 SOUTH TAHOE.PUBLIC UTILITY DISTRICT Stream:' -.Carson R Woodfords ALPINE COUNTY SURFACEWATER QUALITY DATA .2017 Coliforms Fecal <--------- ---Blue Green Algae-------------------------------> Single Hard- Total E.coli Strep <------Colonies-----> <-----Filaments------> <---Filaniaments---> Cells D.O. SO4 ness Date - MPN MPN MPN # cells # cells # um #cells mg/L mg/L mg/L 01/18/17 116 2 10.10 1.75 02/01/17 82 1 11.60 1..82 03/01/17 46- 1 12.30 1.66 04/04/17 166 1 11.50 1.09 05/03/17 93 6 - 10.40 0.78 06/07/17 104 < 1 . 9.31 0.73 07/12/17 488 15 10.14 0.83 08/01/17 517 15 9.19 1.06 09/07/17 517 4 8.75 1.15 10/11/17 326 7 10.00 1.21 11/01/17 73 1 10.80 1.66 12/05/17 93 < 1 12.20 1.78 Maximum 517 15 0 0 0 0 0 0 0 12.30 1.82 Minimum 46 < 1 0 0 0 0 0 0 0 8.75 0.73 Average 218 5 10.52 1.29 #Tests 12 12 0 0 0 0 0 0 0 0 12 12 0 Site: SW-01 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Carson R Woodfords ALPINE COUNTY SURFACEWATER QUALITY DATA . From 1981 To: 2017 Temp Alkalinity Turbidity SS TDS EC Chloride Total P PO4-P Boron K Year C pH mg/L NTU mg/L mg/L umhos mg/L mg/L mg/L mg/L mg/L 81 8.1 7.70 32 0.68 2 -56 71 1.3 0.02. 0.01 1.30 82 5.2 7.58 25 1.70 6- .46 54 0.02 0.01 0.92 83 6.1 7.67 27 2.07 7 46 56 0.5 0.02 0.02 1.03 84 5.7 -7.40 30 1.60 5 49 58 0.7 0.03 0.03 1.15 85 5.8 7.69 33 1.20 3 48 65 0.7 0.02 0.29 1.27 86 4.7 7.64 27- 1.49 5 51 57 0.8. 0.03 0.02 1.10 87 6.8 7.18 35 0.66 2 55 73 0:8 0.02 0.01 1.45 88 7.0 7.07 -35 0.73. 2 56 75 1.0 0.01 0.30 1.29 89 5.7 7.57 30 1.49 5.5 49 71 1.3 0.02 0.02 1.87 90 7.4 7.68 33 0.97 4.2 53 80 1.1 0.02 0.01 0.02 1.34 91 7.8 7.71 33 1.37 5.2 53 75 1.2 0.03 0.01 0.02 1.32 92 8.0 7.99 34 0.90 2.3 58 81 1.2 0.02 0.01 0.02 1.27 93 6.2 7.95 30 1.67 5.8 53 68 1.4 0.03 0.01 0.02 1.20 94 6.4 7.61 34 0.71 2.1 56 78 1.1 0.02 0.01 0.02 1.35 95 5.3 7.52 .27 1.68 10.8 49 64 1.2 0.03 0.01 0.02 1.23 96 6.5 7.47 28 1.11 4.8 53 61 1.0 0.02 0.01 0.01 1.20 97 .6.0 7.24 29 0.83 2.1 49 62 1.0 0.07 0.01 0.01 1.21 98 5.1 6.87 29 1.28 4.4 49 62 1.3 0.03 0.01 0.02 1.21 99 5.9 7.17 29 0.68 2.7 53 70 1.4 0.02 < 0.01 0.01 1.33 00 5.8 7.24 31 1.60 9.1 54- 61 1.3 0.03 0.01 0.02 1.32 01 6.3 7.10 33 1.42 3.8 56 72 1.4 0.02 0.02 0.01 1.41 02 5.6 7.38 32 1.48 2.8 57 70 1.7 0.02 0.01 0.01 1.30 03 5.1 7.48 31 5.09 10.9 54 67 1.7 0.02 0.01 0.02 1.29 04 5.4 7.25 31 4.28 9.5 55 66 1.8 0.03 0.02 0.02 1.28 05 4.9 7.35 32 2.13 5.7 57 55 2.2 0.02 0.01 0.02 1.26 06 5.1 7.06 26 2.94 63 49 -40 1.4 0.02 0.01 0.02 1.10 07 6.7 7.28 31 1.77 3.8 57 65 1.4 0.01 0.01 0.01 1.36 08 5.8 7.87 32 1.44 2.4 54 69 1.6 0.01 0.01 0.01 1.33 09 5.0 7.43 31 3.17 4.4 54 66 1.3 0.02 0.01 0.01 1.27 10 4.5 7.34 30 2.68 5.1 53 66 1.3 0.02 0.01 < 0.01 1.30 11 4.1 7.53 29 3.22 5.9- 53 59 1.0 0.02 0.01 0.01 1.16 12 5.8 6.98 34 1.56' 2.5 56 70 1.1 0.02 0.01 0.01 1.42 13 5.8 6.91 32 1.54 2.7 53 67 1.1 0.02 0.01 0.01 1.20 14 5.8 7.27 35 1.06 2.7 58 78 1.3 0.02 0.01 0.01 1.38 15 6.5 6.78 35 1.22 2.3 58 76 1.2 0.02 0.01 0.01 1.34 16 . 5.5 6.96 30 2.24 5.6 57 66 1.4 0.03 0.01 1.23 17 5.6 7.10 28 2.57. 6.0 51 58 1.0 0.03 0.01 1.04 Maximum 8.1 7.99 35 -5.09 10.9 58 81 2.2 0.07 0.02 0.30 1.87 -Minimum 4.1 6.78 25 0.66 2.0 46 40 0.5 0.01 < 0.01 0.01 0.92 Average 5.9 7.38 31 1.74 4.7 53 66 1.2 0.02 0.01 0.03 1.27 #Tests 37 37 37 37 37 37 37 36 37 28 35 37 Site: SW-01 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream:, Carson R Woodfords ALPINE COUNTY SURFACEWATER QUALITY DATA From: 1981 To: 2017 Oil& TKN NH3-N NO2-N NO3-N Total N COD BOD Grease Ca Mg Na SAR Na Year mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L - mg/L mg/L mg/L % 81 0.17 0.04 0.37 5 1 1 82 0.09 -0.02 0.17 6- 1 < 1 83 0.13 0.02 < 0.01 0.02 0.17 5 1 < 1 84 0.22 0.07 < 0.01 0.01 0.24 7 1 < 1 6.02 1.71 2.71 0.25 19.7 85 0.14 0.03 < 0.01 0.02 0.17 4 1 < 1 6.89 1.84- 3.11 0.27 20.1 86 0.13 0.03 < 0.01 0.02 0.16 .4 1 < 1 5.80 1.64 2.55 0.24 19.4 87 0.15 0.03 < 0.01. 0.01 0.17 4 1 < 1 7.31 2.03 3.54 0.29 -21.1 88 0.15 0.03 < 0.01 0.02 0.18. 5 1 < 1 7.86 2.20 3.69 0.29 20.7 89 0.16 0.03 < 0:01 0.03 0.20 7 1.1 < 1 6.76 1.82 2.93 0.25 18.7 90 0.11 0.02 < 0.01 0.02 .0.15 5 1.0 < 1 . 7.51 2.05 3.48 0.29 20.5 91 0.13 0.03 0.01 0.03 0.17 9 1.1 < 1 7.36 2.00 .3.43 0.28 20.7 92 0.14 0.03 0.01 0.02 0.17 8 1.3 1 8.12 1.98 3.58 0.28 20.3 93 0.33 0.03 0.01 0.03 0.36 11 1.4 < 1 7.22 1.88 3.33 0.28 20.4 94 0.19 0.03 0.01 0.01 0.21 < 5 1.0 1 7.58 1.95 3.82 0.31 22.2 95 0.20 0.04 0.01 0.02 0.23 8 1.3 1 6.58 1.81 3.28 0.28 21.4 96 0.21 0.02 0.01 0.04 0.26 6 1.1 1 6.38 1.68 3.11 0.27 21.4 97 0.19 0.05 0.01 0.09 0.29 5 1.0 4 6.63 1.83 3.30 0.29 21.7 98 0.18 0.03 0.01 0.03 0.22 5 1.0 < 1 6.20 1.68 3.14 0.28 21.9 99 0.17 O 03 < 0.01 0.03 0.21 < 5 1.1 6.60 1.81 3.47 0.31 22.5 00 0.20 0.02 < 0.01 0.01 0.22 5 1.2 5.92 1.84 3.46 0.32 23.7 01 0.16 0.02. < 0.01 0.01 0.19 15 1.1 7.20 1.97 3.84 0.32 23.0 02 0.24 0.03 < 0.01 0.02 0.26 5 0.7 6.93 1.90 3.86 0.33 23.7 03 0.18 0.03 0.01 0.02 0.21 6 0.9 6.91 1.90 3.63 0.31 22.7 04 0.16 0.04 0.01 0.02 0.18 9 0.8 6.70 1.92 3.54 0.31 22.4 05 0.15 0.02 < 0.01 0.03 0.19 12 1.2 7.01 1.87 3:55 0.30 22.0 06 0.11 0.03 < 0.01- 0.02 0.13 10- 1.2 5.98 1.64 3.08 0.28 22.2 07 0.25 0.02 < 0.01 0.02 0.28 9 1.1 7.19 1.93 3.84 0.32 22.9 08 0.14 < 0.02 < 0.01 0.01 0.17 9 1.0 7.27 .1.90 3.79 0.32 22.7 09 0.17 < 0.02 < 0.01 0.01 0.19 8 0.9 7.08 1.87 3.58 0.31 22.2 10 0.09 < 0.02 < 0.01 0.01 0.12 12 1.8 6:92 1.90 3.44 0.30 21.6 11 0.09 < 0.04 < 0.01 0.03 0.12 7 1.3 6.27 1.70 3.12 .0.28 21.6 12 0.13 . . 0.02 < 0.01 0.01 0.16 1.4 7.40 1.94 3.71 0.31 21.9 13 0.14 0.03 < 0.01 0.01 0.14 1.1 7.33 1.80 3.46 0.29 21.4 14 0.12 0.03 < 0.01 0.01 -0.12 1.1 7.84 2.03 4.05 0.33 22.8 15 0.12 0.02 < 0.01 0.01 0.12 8.28 2.08 3.96 0.32 21.8 16 0.14 0.02 < 0.01 0.03 0.17 7.27 1.81 3.55 0.30 21.9 17 0.14 0.02 < 0.01 0.01 0.15 6.53 1.70 3.06 0.27 21.1 Maximum 0.33 0.07 0.01 0.09 0.37 15 1.8 4 8.28 2.20 4.05 0.33 23.7 Minimum 0.09 0.02 < 0.01 0:01 0.12 4 0.7 < 1 5.80 1.64 2.55 0.24 18.7 Average 0.16 0.03 0.01 0.02 0.20 7 1.1 1 6.97 1.87 3.44 0.29 21.6 #Tests 37 37 35 35 37 31 34 18 34 34 34 34 34 Site: SW-01 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Carson R Woodfords ALPINE COUNTY SURFACEWATER QUALITY DATA From: 1981 To: 2017 Coliforms Fecal/ Fecal <--------------------------Blue Green Algae--------------------------------> Single Hard- . Total .E.coli Strep <------Colonies------> <-----Filaments------> <---Filamaments---> Cells D.O. - SO4 ness Year MPN MPN MPN # cells # cells # um #cells mg/L mg/L mg/L 81 307 226 184 23 208 27 221 8 487 3 82 123 38 31 16 77 50 131 17 445 26 83 260 135 47 22 427 92 1,015 35 790 22 9.87 < 0.01 25 84 419 55 48 293 4 61 970 226 2,220 52 9.38 1.17 25 85 165 45 48 0 0 286 43 196 10 0 9.92 0.73 27 86 175 43 100 0 0 45 92 92 3 69 10.42 9.57 23 87 140 74 37 0 0 46 623 139 3 27,077 9.78 4.88 27 88 294 < 30 43 0 0 0 0 1,085 54 0 11.71 3.61 89 271 48 285 0 0 0 0 439 22 231 10.23 3.82 90 163 50 156 0 0 0 0 0. 0 0 9.25 3.97 25 91 153 37 40 0 0 6 115 0 0 0 8.94 4.08 23 92 164 26 130 0 0 0 0 0 0 0 9.88 4.16 26 93 176 41 40 0 0 15 50 0 0 0 10.02 3.86 22 94 118 32 37 0 0 0 4 0 0 0 9.94 4.70 25 95 73 31 - 35 0 0 0 33 0 0 0 10.24 4.32 21 96 142 33 35 0 0 0 0 0 0 0 10.56 2.34 22 97 75 30 130 0 0 0 0 0 0 0 10.75 2.81 25 98 67 31 60 0 0 29 179 0 0 0 9.44 2.27 19 99 110 32 130 0 0 3 29 0 0 0 10.10 2.37 00 38 < 28 < 30 0 0 0 0 0 0 0 10.24 2.30 01 44 16 < 30 0 0 0 0 0 0 0 9.58 2.02 02 37 9 107 0 0 4 113 0 0 0 9.37 2.15 03 65 21 21 0 0 0 0 0 0 0 10.06 2.04 04 60 5 22 0 0 0 0 0 0 0 9.93 1.99 05 26 11 8 0 0 94 782 0 0 0 10.74 2.09 06 119 54 < 3 0 0 0 0 0- 0 0 10.24 -1.39 07 23 6 < 26 0 0 0 0 0 0 0 9.59 1.85 08 40 4 117 0 0 0 0 0 0 0 10.30 2.32 09 244 16 4 0 0 0 0 0 0 0 10.14 2.03 10 228 32 < 3 0 0 3 85 0 0 0 9.28 1.99 11 70 22 4 0 0 3 28 0 0 0 10.52 1.38 12 63 14 6 0 0 0 0 0 0 0 9.67 1.90 13 480 10 4 0 0 0 0 0 0 0 10.52 2.25 14 518 25 4 0 0 0 0 0 0 0 9.75 2.18 15 588 7 10.44 2.22 16 330 3 11.69 1.94 17 218 5 10.52 1.29 Maximum 588 226 285 293 427 286 1,015 1,085 2,220 27,077 11.71 9.57 27 Minimum 23 3 3 0 0 0 0 0 0 0 8.94 < 0.01 19 Average 178 36 59 10 21 22 150 66 119 808 10.09 2.69 24 #Tests 37 37 34 34 34 34 34 34- 34 34 35 35 14 Sites. - Swmol Nitrate-Nitrogen Total Phosphorus 0.5 -0.5 0.4- 0.4 0.3 0.3 J J - E E 0.2 0.2 0.1 0.1 0.0 0.0 O^ 0� 00 0� 00 O� 00 0O 4 O�' O� 00 00 OA O°b NN 0 Nh KA 0� 0Ib �h %A � 0� O� 0� 0'1 00 1�1 00 00 16A O°b ^� 43 Nh KA —�Nitrate Linear(Nitrate) Total Phosphorus Linear(Total Phosphorus) Chlorides Total Dissolved Solids 10 250 9 8 200 7 6 150 J J c, 5 a� E E 4 100 3 2 50 Al 0 0 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 0^ 0`� 0O IbA %q 0� O`y oO 0k Oc' O` 00 00 O� O°' NN N0 Nb N% —�—Chlorides Linear(Chlorides) -+--TDS Linear(TDS) Site: SW-02 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Indian Creek,Upper ALPINE COUNTY SURFACEWATER QUALITY DATA 2017 Temp Alkalinity Turbidity SS TDS EC Chloride Total P PO4-P Boron K Date C pH mg/L NTU mg/L mg/L umhos mg/L mg/L mg/L mg/L mg/L 03/01/17 2.3 7.06 28.9 .-2.20 0.26 62 60.1 1.16 0.017 0.017 1.27 04/04/17 7.2 6.94 32.7 1.70. 0.32 69 61.6 0.86 0.031 0.013 1.25 05/03/17 10.7 6.86 39.4 1.80 0.96 77 - 76.3 0.827 0.026 0.016 1.60 06/07/17 13.9 7.66 32.5 2.80 3.64 56 66.5 < 0.500 0.023 0.012 1.35 07/12/17 11.8 7.43 46.7 1.40 0.41 76 103 1.220 0.023 0.010 1.61 08/01/17 16.4 7.54 50.0 1.10 0.28 74 99 0.975 0.020 0.012 1.79 09/07/17 13.1, 6.53 47.5 1.20 0.16 -70 98.2 1.150 0.042 0.010 1.83 10/11/17 9.2 7.61 -47.9 1.50 0.54 70 92.9 1.030 0.018 0.012 1.38 11101/17 5.8 7.03 48.3 1.20 0.15 79 90.1 1.000 0.020 0.010 1.55 Maximum 16.4 7.66 50.0 2.80 3.64 79 103 1.220 0.042 0.017 1.83 Minimum 2.3 6.53 28.9 1.10 0.15 56 60.1 < 0:500 0.017 < 0.010 1.25 Average 10.0 7.18 41.5 1.66 0.75 70 83 0.969 0.024 0.012 1.51 #Tests 9 9 9 9 9 9 9 9 9 9 0 9 Site: SW-02 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Indian Creek,Upper ALPINE COUNTY SURFACEWATER QUALITY DATA 201-7 Oil& TKN NH3-N NO2-N NO3-N Total N COD BOD Grease Ca. Mg Na SAR Na Date mg/L mg/L mg/L. mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L % 03/01/17 0.135 < 0.020 < 0.010 0.011 0.146- 5.77 1.50 4.92 0.470 32.50 04/04/17 0.147 < 0.020 < 0.010 < 0.010. 0.147 5.82 1.46 5.40 0.520 34.70 05/03/17 0.150 < 0.020 -< 0.010 < 0.010 0.150 7.67 1.80 6.33 0.530 32.50 06/07/17 0.146 < 0.020 < 0.010 < 0.010 0.146 6.55 1.40 4.16 0.380 27.50 07/12/17 0.135 < 0.020 <- 0.010 < 0.010 0.135 9.99 2.39 5.65 0.420 25.00 08/01/1.7 0.149. 0.023 < 0.010 < 0.010 0.149 10.50 2.67 6.13 0.440 2520 09/07/17 0.154 0.022 < 0.010 < 0.010 0.154 10.20 2.46 6.24 0.450 26.40 10/11/17 0.204 0.048 < 0.010 < 0.010 0.204 9.00 2.05 6.32 0.490 29.60 11/01/17 0.172 < 0.020 < 0.010 <. 0.010 0.172 10.10 2.46 7.13 0.520 29.40 Maximum 0.204 0.048 < 0.010 0.011 0.204 10.50 2.67 7.13 0.530 34.70 Minimum 0.135 < 0.020 < 0.010 < 0.010 0.135 5.77 1.40 4.16 0.380 25.00 Average 0.155 0.024 < 0.010 < 0.010 0.156 8.40 2.02 5.81 0.469 29.20 #Tests 9 9 9 9 9 0 0 0 9 9 9 9 9 Site: SW-02 SOUTH TAHOE-PUBLIC UTILITY DISTRICT Stream: Indian Creek,Upper ALPINE COUNTY SURFACEWATER QUALITY DATA 2.0.17 Coliforms Fecal <--------------------------Blue Green Algae---=---------------------------> Single Hard- Total E.coli Strep <------Colonies---=--> <-----Filaments-------> <---Filamaments-=-> Cells D.O. SO4 ness Date MPN MPN MPN # cells # cells #- um #cells mg/L mg/L mg/L -03/01/17 77 7- 11.30 < 0.50 04/04/17 206 2 9.89 < 0.50 05/03/17 1,203 2 8.84 < 0.50- 06/07/17 1,396 172 8.33 < 0.50 _ 07/12/17 2,014 75 7.79 < 0.50 08/01/17 1,067 57 7.50 < 0.50 09/07/17 548. 73 8.27 < 0.50 10/11/17 285 10 9.16 0.50 11/01/17 210 2 9.52 < 0.50 Maximum 2,014 172 0 0 0 0 0 0 0 11.30 < 0.50 Minimum 77 2 0 0 0 0 0 0 0 - 7.50 < 0.50 Average 778 45 8.96 < 0.50 #Tests 9 9 0 0 0 0, 0 0 0 0 9 9 0 'Site: SW-02- SOUTH TAHOE PUBLIC UTILITY DISTRICT . Stream: Indian Creek,Upper -ALPINE COUNTY SURFACEWATER QUALITY DATA From 1981 To: 2017 Temp Alkalinity Turbidity -SS TDS EC Chloride Total P PO4-P Boron K Year C pH mg/L NTU mg/L mg/L umhos m /L m /L mg/L mg/L mg/L 81 13.8 7.33 54 6.50 3 109 162 1.8 0.-05 0.01 1.94 82 83 8.6 7.56. 39 5.13 3 72. 69 0.7 0.02 0.04 1.40 84 8.4 7.71 40 2.36 6 64 76 0.8 0.03 0.02 1.48 85 86 87 5.2 7.55 48 2.20 1 70 80 1.1 0.02 < 0.01 1.50 88 6.3 6.90 46 1.97 1 81 92 1.2 0.02 0.01 1.25 89 5.9 7.47 44 2:86 2.0 79 '94 1.3 0.02 0.02 1.30 90 4.5 7.42 44 2.82 2.0 77 108 1.1 0.02 0.01 1.32 91 7.9 8.10 47 4.90 2.3 81 106 1.7 0.03 0.01 0.01 1.57 92 9.0 7.52 54 4.01 4.3 90 105 1.4 0.05 0.01 .0.02 1.51 .93 8.7 7.51 44 3.06 1.1 80 93 1.8 0.04 0.02 0.02 1.64 94 5.5 7.14 47 3.09 1.0 79 97 1.4 0.03 0.01 0.02 1.37 95 8.4 7.63 44 2.51 1.4 79 90 1.4 0.03 0.02 0.01 1.48 96 9.5 7.45 52 3.37 2.9 82 104 1.9 0.04 0.01 0.01 1.79 97 8.2 7.43 57 4.38 13.2 86 111 0.9 0.06 0.01 0.02 1.70 98 7.5 7.30 55 2.35 2.2 85 109 1.0 0.03 0.01 0.01 1.58 99 8.5 7.19 52 2.03 1.9 81 104 0.9 0.03 0.01 0.02 1.53 00 9.3 7.28 58 1.63 1.2 88 109 1.3 0.04 0.01 0.02 1.63 01 5.0 7.29 50 2.04 1.8 82 98 1.5 0.02 0.03 0.01 1.33 02 6.9 7.14 45 2.19 3.5 78 91 1.7 0.02 0.01 0.02 1.49 03 9.4 7.55 45 1.63 1.0 78 85 _ 1.4 0.02 0.01 0.03 1.48 04 8.6 7.23 46 2.17 1.5 77 89 1.4 0.02 < 0.01 0.02 1.45 05 8.6 7.27 46 1.73 1.1 77 80 1.8 0.02 0.01 0.02 1.35 06 9.1 6.92: 44 2.38 3.0 76 69- 1.0 0.03 0.01. 0.02 1.42 07 9.4 7.51 50 1.77 0.7 81 98 1.2 0.03 0.01 0.01 1.52 08 7.9 7.59 45 1.77 2.0 72 89 1.7 0.03 0.01 < 0.01 1.59 09 9.4 7.20 46 2.20 1.0 80 92 1.2 0.02 0.01 < 0.01 1.72 10 8.3 7.35 40 2.33 1.2 72 84 1.0 0.03 0.01 < 0.01 1.72 11 9.2 7.58 48 3.99 2.5 85 93 1.3 0.04 0.01 0.01 2.29 12 9.4 7.17 55 1.72 1.6 84 105 0.7. 0.03 0.01 < 0.01 1.53 13 6.1 6.95 44- 1.34 0.1 75 85. 0.9 0.04 0.01 0.01 1.29 14 5.9 7.01 39 2.57 1.4 73 80 1.3 0.02 0.01 0.02 1.47 15 5.9 6.94 41 3.20 0.4 84 87 0.9 0.02 .0.01 0.01 1.44 16 9.7 7.10 46 2.03 0.6 87 101 1.7 0.03 0.01 1.54 17 10.0 7.18 42 1.66 0.7 70 83 1.0 0.02 0.01 1.51 Maximum 13.8 8.10 58 6.50 13.2 109 162 1.9 0.06 0.03 0:04 2.29 Minimum 4.5 6.90 39 1.34 0.1 64 69 0.7 0.02 < 0.01 < 0.01 1.25 Average 8.1 7.34 47 2.70 2.2 80 95 1.3 0.03 0.01 0.02 1.53- #Tests 34 34 34 34 34 34 34 34. 34 27 32 34 Site! SW-02 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Indian Creek,Upper ALPINE COUNTY SURFACEWATER QUALITY DATA From: 1981 :To: 2017 Oil&_ TKN NH3-N NO2-N NO3-N. Total N COD BOD' Grease Ca Mg Na SAR Na Year mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L 81 0.41 0.10 0.60 9 < 1 < 1 82 83 0.25 0.05 < 0.01 0.01 0.18 8 1 < 1 84 0.49 0.05 < 0.01 < 0.01 0.51 9 1 < 1 7.77 1.95 4.48 0.37 24.8 85 86 - 87 0.17 < 0.02 < 0.01 0.02 0.22 6 1 < 1 9.80 2.50- 7.10 0.52 29.6 88 0.19 0.03 < 0.01 0.01 0.20 9 1 < 1 9.15 2.38 6.77 0.51 30.1 89 -0.20 0.02 < 0.01 0.02 0.23 9 1.0 < 1 8.50 2.06 6.85 0.55 32.4 90 0.14 0.02 < 0.01 0.01 0.17 8 1.2 < 1 8.77 2.15 6.93 0.54 31.9 91 0.25 0.03 0.01 0.01 0.28 9 1.1 < 1 9.24 _ 2.29 7.10 0.54 30.9 92 0.28 0.03 0.01. 0.02 0.31 9 1.4 1 10.99 2.49 8.08 0.57 31.2 93 0.36 0.02 0.01 0.02 0.39 24 1.2 < . 1 9:25 2.29 7.05 0.54 31.0 94 0.26 0.02 0.01 0.02 0.29 < 5 1.0 < 1 9.24 2.30 7.97 0.61 33.8 95 0.28 0.05 0.01 0.02 0.31 8 1.2 1 9.08 2.15 6.15 0.48 28.9 96 0.32 0.02 0.01 0.03 0.36 7 1.2 1 10.77 2.67 7.07 0.49 27.8 97 0.32 0.02 0.01 0.10 0.43 9 1.1 3 12.43 3.10 7.21 0.46 25.9 98 0.26 0.02 < 0.01 0.02 0.29 5 1.0 < 1 11.23 2.74 6.51 0.46 26.1 99 0.24 0.02 < 0.01 0.02 0.27 6 1.0 10.56 2.64 6.47 0.46 26.6 00 0.25 0.02 < 0.01 < 0.01 0.25 7 0.9 10.88 2.82 7.41 0.52 28.6 01 0.25 0.02 < 0.01 0.02 0.27 20 1.1 9.49 2.39 7.68 0.58 32.4 02 0.26 0.03 < 0.01 0.03 0.30 < 5 0.8 8.02 2.10 7.72 0.64 36.0 03 0.22 0.02 0.01 0.01 0.24 7 0.8 8.38 2.20 6.48 0.52 31.1 04 0.21 0.03 < 0.01 . < 0.01 0.23 7 1.1 8.47 2.20 6.45 0.52 31.2 05 0.28 0.02 < 0.01 0.01 0.30 12 1.8 8.39 2.18 6.23 0.50 30.4 06 0.16 0.02 < 0.01 < 0.01 0-.18 10 1.0 8.59 2.16 5.87 0.46 28.7 07 0.16 0.05 < 0.01 < 0.01 0.19 8 1.0 9.56 2.41 8.01 0.60 33.0 08 0.15 < 0.02 < 0.01 0.01 0.18 8 0.9 8.52 2.06 7.06 0.57 32.8 09 0.30 < 0.02 < 0.01 < 0.01 0.32 19 0:8 8.76' 2.16 7.30 0.58 33.3 10 0.17 < 0.02- < 0.01 < 0.01 0.19 13 1.3 8.04 2.09 6.17 0.51 30.8 11 0.25 0.02 < 0.01 0.01 0.28 12 1.5 8.95 2.36 6.82- 0.53 30.1 12 0.18 0.02 < 0.01 < 0.01 0.20 1.4 10.36 2.50 -7-.86 0.57 31.2 13 0.16 0.02 < 0.01 0.01 0.17 1.2 7.88 1.93 7.80 0.65 36.9 14 0.19 -0.02 < 0.01 0.01 0.20 1.3 6.81 1.69 7.95 0.71 40.1 15 0.22 < 0.02 < 0.01 0.01 0.22 6.97 1.78 9.24 0.81 43.3 16 0.19 < 0.02 < 0.01 < 0.01 0.20 8.76 2.14 8.27 0.66 36.4 17 0.15 0.02 < 0.01 < 0.01 0.16 8.40 2.02 5.81 0.47 29.2 Maximum 0.49 0.10 0.01 0.10 . 0.60 24 1.8 3 12.43 .-3.10 9.24 0.81 43.3 Minimum 0.14 < 0.02 < 0.01 < 0.01 0.16 < 5 0.8 < 1 6.81 .1.69 4.48 0.37 24.8 Average' 0.24 0.03 0.01 0.02 0.27 10 1.1 1 9.13 2.28 7.06 0.55 31.5 #Tests. 34 34 33 33 34 28 31 15 32. 32 32 32 32 Site: SW=02. SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Indian Creek,Upper ALPINE COUNTY SURFACEWATER QUALITY DATA From: 1981 To: 2017 Coliforms Fecal/ _Fecal <--------------------------Blue Green Algae---------------=---------------> Single Hard Total E.-coli . Strep <------Colonies------> <-----Filaments------> <---Filamaments---> Cells D.O. 804 ness Year .MPN MPN MPN # cells #, cells # um #cells mg/L mg/L mg/L 81 3,820 283 2,315 5 10 37 452 0 0 2 82 83 336 73 33 0 0 6 32 2 30 0 8.85 2.34 32 84 3,140 122 180 155 105 3 5 347 209 44 8.61 1.10 29 .85 86 87 40 < 30 < 30 0 0 0 0 0 0 0 9.10 3.40 88 107 32 90 0 0 92 877 46 1 92 9.43 3.58 -89 86 31. 58 0 0 79 1,968 35 213 0 9.28 3.77 90 112 30 72 0 0 0 0 0 0- 323 7.53 3.75 33 91 130 40 40 0 0 0 0 0 0 0 7.41 4.35 30 92 372 73 150 5 91 86 201 0 0 0 8.82 4.55 38 93 810 261 150 0- 0 4 95 0 0 0 8.15 4.09 28. 94- 753 31 90 0 0 0 0- 0 0 0 8.13 5.04 58 95 793 243 230 0 0 0 0 0 0 0 8.81 4.35 30 96 1,956- -529 770 .0 0 0 0 0 0 0 8.53 2.93 35 97 1,567 497. 155 0 0 3 53 0 0 0 8.74 3.36 45 98 982 562 160 0 0 0 0 0 0 0 8.92 2.63 42 99 863 90. < 30 0 0 0 0 0 0 0 8.34 2.99 00 434 79 65 0 0 0 0 0 0 0 7.76 1.31 01 128 73 90 0 0 0 0 0 0 0 8.70 0.63 02 81 13 68 0 0 41 375 0 0 0 8.55 0.70 03 141 35 33 0 0 0 0 0 0 0 7.34 0.59 04 271 27 68 0 0 0 0 0 0 0 1.97 0.67 05 220 84 220 0 0 0 0 0 0, 0 8.60 0.47 06 746 320 235 0 0 0 0 0 0 0 7.30 0.43 07 673 145 97 0 0 0 0 0 0 0 7.99 0.65 08 111 20 68 0 0 5 15 0 0 0 7.83 - 0.61 09 2,024 96 43. 0 0 0 0 - 0 0 0 6.86 0.46 10 1,631 186 4 0 0 3 65 0 0 0 5.80 0.60 .11 1,768 1,412 19 0 0 0 0 0 0 0 7.95 < 0.50 12 323 186 3 .0 0 0 0 0 0 0 6.48 < 0.50 13 44 20 3 0 0 0 0 0 0 0 8.09 0.58 14 110 4 4 0 0 0 0 0 0 0 8.71 1.00 15 359 3 7.19 1.40 16 1,022 9 8.57 1.06 17 778 45 8.96 < 0.50 Maximum 3,820 1,412 2,315 155 105 92 1,968 347 213 323 9:43 5.04 58 Minimum 40 3 < - -3 0 0 0 0 0 0 0 5.80 0.43 28 Average 7,86 167 180 5 7- 12 133 14 15 15 8.16 1.97 36 #Tests 34 34 31 31 31 31 31 31 31 31 33 33 11 Site: SW- 02 Nitrate-Nitrogen Total Phosphorus 0.5 0.5. 0.4 0.4 0.3 0.3 J J E 0.2 0.2 0.1 0.1 0.0 0.0 �"� �h �'� �� p�� pig p�4j 0� �jg O� o� Oh O� db -I^ kg ,�h Nk �'� �^� �h �^ 0� 0^ p�^� p�h pA p�0 O^ 03 Oy o1 —�Nitrate Linear(Nitrate) —♦—Total Phosphorus Linear(Total Phosphorus) Chlorides Total Dissolved Solids 10 250 9 8 200 7 6 150 a� 5 c, E _ E 4 100 3 2-. 50 1Oe 0 - -. 0 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12.13 14 15 16 17 qb �`5 Oh IOIA 0�' 0� 0`� 01b 01 00' O� oy --�—Chlorides Linear(Chlorides) —♦—TDS Linear(TDS) Site: SW-03 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Indian Creek,Mid ALPINE COUNTY SURFACEWATER QUALITY DATA 2017 _ Temp Alkalinity Turbidity SS TDS EC Chloride Total P PO4-P Boron K Date C pH mg/L NTU mg/L mg/L umhos mg/L mg/L mg/L mg/L mg/L 03/01/17 1.9 6.92 34.3- 5.80 1.54 79 84.1 1.90 0.044 0.018 1.47 04/04/17 . 8.5 6.59 37.8 3.00 3.71 79 81 2.14 0.042 0.012 1.34 05/03/17 15.7 6.63 33.8 8.50 9.08 . 73 73.4 1.29 0.066 0.014 1.82 06/07/17 13.9 .7.39 32.1 7.00. 9.49 42 70.8 1.33 0.053 0.015 1.34 07/12/17 14.6 7.15 37.2 2.50 4.20 .62 76.9 1..46 0.039' 0.013 1.26 08/01/17 21.5 7.27 55.6 4.90 7.16. 84 116 1.91 0.071 0.022 1.62 09/07/17 17.9 6.70 88.1 6.00 1.98 134 200 5.48 0.068 0.015 1.94 10/11/17 11.3 7.41 97.8 11.00 - 2.03 146 211 5.47 0.061 < 0.010 1.98 11/01/17 10.1 6.87 101.0 5.60 0.56 151 219 5.50 0.082 < 0.010 1.68 Maximum 21.5 7.41 .101.0 11.00 9.49 151 219 5.50 0.082 0.022 1.98 Minimum 1.9 6.59 32.1 2.50 0.56 42 70.8 1.29 0.039 < 0.010 1.26 Average 12:8 6.99 57.5 6.03 4.42 94 126 2.94 0.058 0.014 1.61 #Tests 9 9 9 9- 9 9 9 9 9 9 0 9 Site: SW-03 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Indian Creek,Mid, ALPINE COUNTY SURFACEWATER QUALITY DATA 2017 Oil& TKN NH3-N - NO2-N NO3-N Total N COD BOD Grease Ca Mg . Na SAR Na_ Date mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L % 03/01/17 0.127 0.021 < 0.010 0.343 0.470 7.64 2.11 5.84 0.480 30.00- 04/04/1.7 0.167 <- 0.020 < 0.010 0.158 0.325. 7.34 1.96 6.12 0.520 32.10 05/03/17. 0.419 0.031 < 0.010 0.028 0.447 7.44 1.92 4.68 0.400 26.10 06/07/17 0.136 < 0.020 < 0.010 0.030 0.166 7.09 1.74 3.69 0.320 23.20 07/12/17 0.126 < 0.020 < 0.010 0.012 0.138 8.43 2.23 4.43 0.350' 23.20 08/01/17 0.180 - 0.023 < 0.010 < 0.010 0.180 11.90 3.13 7.40 0.490 26.50 09/07/17 0.163 0.026 < 0.010 0:014 0.177 19.30 6.03 11.40 0.580 24.70 10/11/17 0.194 0.046 < 0.010 0.040 0.234 21.40 6.77 12.70 0.610 24.80 11/01/17 0.156 < 0.020 < 0.010 0.059 0.215 21.80 6.63 13.20 0.640 25.50 Maximum 0.419 0.046 < 0.010 0.343, 0.470 21.80 6.77 13.20 0.640 32.10 Minimum 0.126 < 0.020 < 0.010 < 0.010 0.138 7.09 1.74 3.69 0.320 23.20 Average 0.185 0.025 < 0.010 0.077 0.261 12.48 3.61 7.72 0.488 26.23 #Tests 9 9 9 9 9 0 0 0 9 9 9 9 9 Site: SW-03 SOUTH TAHOE PUBLIC UTILITY DISTRICT, Stream: Indian Creek,Mid ALPINE COUNTY SURFACEWATER QUALITY DATA 2017 Coliforms Fecal <--------------------------Blue Green Algae-------------------------------> Single Hard- Total E.coli Strep <------Colonies------> <-----Filaments------> <---Filamaments--->. Cells D.O. SO4 ness Date MPN MPN MPN # cells # cells # um #cells mg/L mg/L mg/L 03/01/17 105 < 1 11.60 1.65 04/04/17 196 4 9.75 1.19 05/03/17 135 9 8.21 1.38 06/07/17 1,081-. 127 8.57 1.06 07/12/17 2,851 57 9.22 1.06 08/01/17 9,804 1,281 7.51 1.22 09/07/17 2,613 272 7.86 4.48 10/11/17 488 20 8.48 4.34 11/01/17 613 261 7.91 4.39 Maximum 9,804 1,281 0 0 0 0 0 0 0 11.60 4.48 Minimum 105 < 1 0 0 0 0 0 0 0 7.51 1.06 Average 1,987 226 8.79 2.31 #Tests 9 9 0 0 0 0 0 0 .0 0 9 9 0 Site: SW-03 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Indian Creek,Mid ALPINE COUNTY SURFACEWATER QUALITY DATA From 1981 _ To: 2017 Temp Alkalinity Turbidity SS TDS EC Chloride Total_P PO4. Boron K Year- C pH mg/L NTU mg/L mg/L umhos mg/L mg/L mg/L mg/L mg/L 81 9.7 7.43 67 3.70 3 229 390 3.61 0.06. 0.08 3.14 82 10.1 7.42 62 5.15 6 158 233 0.11 0.08 3.20 83 7.2 8.41._ 62- 7.17 .7 145 221 25.3 0.12 - 0.08 2.80 84-- 7.5 7.47 60 4.20 4 109 154 11.7 0.11 -0.02 2.31 85 10.4-. 7.43 46 4.40 5 110 125 8.4. 0.14 0.04 3.03 86 5.5 7.77 57 , 4.70 -. 2 115 176 14.6 0.07 0.04 -1.97 87_ 8.8 '7.18 71 3.03- 4 149 230 20.7 0.06: 0.06 2.00 88 9.9 7.13 81 16.71 11 168 241, 18.6 0.11 0.08 2.43 89 9.2 7.43 78 6.48 4.7 126 183 8.9 . 0.08 0.03 1.63 90 8.9' 7.49 . 74 5.42 3.3 114 195_ 5.8. 0.08 0.03 0.04 1.61 91 10.3 7.42 95 8.64 5.1 146 202 7.7 0.11 0.02 0.04 2.35 92 10.6. 7.47 103 8.20, 4.0 151 216- 6.1 0.12 0.03- .0.05 2.05 93 9.8 7.33 85 7.7T 3.8 146 213 8.1 0:11 0.04 0.04 2.24 . -94 9.9 -7.40 104 10.91 4.3 154 234 8.6_ 0.13 0.03 0.03 1.81 95 10.4 7.47 87 7.30 3.0 141 204 7.7 0.11 0.11 0.03 2.17 96 11.3 7.20 63 5.07 5.3 97 137 3.5 0.09 0.03 0.02 1.95 97 9.9. 7:38 83 6.68 8.4 132 192 7.3 0.11 0.03- 0.04 1.98 98 8.8 7.01 64 4.44 5.0 104 143 3.8 0.08- 0.64 0.02 1.84 99 10.3 7.02 .61 5.18 3.9 97 130 2.6 0.10 0.04 0.01 1.81 00 10.7 7.24 74 6.81 12.8 115 154 3.9 0.08 0.02 0.03 1.91 01 11.7 7.21 83 2.95 3.1- 121 171 3.4 0.07 0.02 0.03 1.85 02 11.7 7.15 100 7.82 7.8 142 199 4.0 0.11 0.02 0.03 2.36 03 11.6 7.41 83 9.23 8.5 123 165 3.4 0.12 0.02 0.03 2.10 04 11.2 7.21 88 7.36 8.5 130 174 3.9 0.11 0.01 0.04 2.07 05 9.9 7.24 81 4.74 3.7 127 152 '3.9 0.09 0.02 0.03 1.74 06 9.5 7.08 52 9.39 12.2 90 87 2.2 0:08 .0.02 0.05 1.45 07 10.4 7.49 83 4.53 . 5.4 121 157 3.2 0.08 0.02 0.02 2.06 08 9.4 7.84 70 5.07 5.4 113 155 3.2 0.12 0.04 0.02 2.08 09 9.3 7.58 75 4.31 2.6 115 158 2.8 0.07 0.02 0.02 1.95 10 8.6 7.39 59 6.17 9.2 95 124 2.3 0.08 0.02 0.01 1.75 11 9.5 7.5.1 38 11.66 20.2 68 75 1.1 0.11 0.01 0.01 1.53 - 12 11.1. 7.38 71 3.01 2.8 108 138 2.3 0.07 0.02 0.01 1.70 13 11.6.. 7.21 57 12.36 11.5 90 115 1.7 0.08 .0.03 0.01 1.72 14 9.6 7.20 57 4.00 8.3 94 114 2.0 0.08 0.04 0.01 2.10 15 11.7 7:22 79 4.08 12.7 119 160 2.6 . 0.09. 0.04 0.02 1.79 16 10.5 7.01 60 16.58 33.7 1001. 126 2.4 0.18 0.02 1.65 17 12.8 6.99 58. 6.03 4.4 94 126 2.9 0.06 0.01 1.61 Maximum 12.8 8.41 104 16.71 33.7 229 390 25.3 0.18 0.11 0:08 3.20 Minimum 5.5 6.99 38 2.95 2.0 68 75 1.1 0.06 -0.01 0.01 1.45 Average 10.0 7.36 72 6.79 7.2 123 172 6.2. 0.10 0.03 0.03 2.05 #Tests 37 37 37 37 . 37 37 37 36 37 28 35 37 Site: SW-03 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Indian Creek,Mid -ALPINE COUNTY SURFACEWATER QUALITY DATA From: 1981 To: 2017 -Oil& TKN NH3-N NO2-N NO3-N Total N COD BOD- Grease -Ca Mg Na SAR Na Year mg/L mg/L mg/L mg/L mg/L mg/L m /L mg/L m /L mg/L m /L % -81 0.34 0.04 1.07 7 1 1 82 0.45 0.02 0.61 15 - 83 0.46 0.07 < 0.01 0.45 0.45 14 1 < 1 84 0.41 0.12 0.01 0.09 0.50 13 2 1 13.50 3.80 11.35 0.71 32.0- 85 0.46 0.06 < 0.01 0.02 0.48 16 2 < 1 10.93 2.91 8.08 0.56 28.8 86 0.08 < 0.02 < 0.01 0.12 0.22 6 1 < 1 14.80 4.30 13.80 0.74 31.2 87 0.19 0.02 < 0.01 0..13 0.33 5 1 1 20.07 6.17 18.30 0.85 31.9 88 0.35 0.07 < 0.01 0.03 0.38 8 1 < 1 20.05 6.51 18.35 0.87 32.0 89 0.23 0.03 < 0.01 .0.02 0.26 6 1.2 < 1 15.81 4.73- 14.67 0.77 31.7 90 0.17 0.02 < 0.01 0.03 0.21 7 1.1 < 1 14.24 4.22 12.44 0.69 30.7 91 0.32 0.06 0.01 0.06 0.39- 9 1.3 < 1 18.44 5.65 15.32 0.77 30.2 92 0.29 0.05 0.01 0.02 0.32 12 1.3 1 19.92 5.98 16.50 0.82 31.5 93 0.38 0.04 0.01 0.02 0.42 14 1.8 < 1 20.12 5.25 16.28 0.82 31.8 94 0.35 0.03 0.01 0.02 0.38 < 5 1.8 < 1 20.83 6.22 17.63 0.86 32.4 95 0.42 0.04 0.01 0.06 0.49 13 1-.4 1 18.92 5.26 14.93 0.77 31.2 96 0.34 0.03 0.01 0.06 0.41 5 1.3 1 13.62 3.58 9.12 0.55 27.1 97 0.34 0.05 0.01 0.14 0.49 14 1..3 1 16.47 5.33 14.55 0.79 31.9 98 0.29 0.02 < 0.01 0.04 0.34 < 5 1.1 < 1 13.02 3.54 9.06 0.56 28.2 99 0.27 0.02 < 0.01 0.03 0.32 < 5 1.0 11.96 3.39 8.47 0.54 28.0 00 0.32 0.02 < 0.01 0.03 0.35 < 5 1.3 14.32 4.38 9.85 0.55 26.5 01 0.19 0.03 < 0.01 0.02 0.22 14 1.0 15.04 5.09 10.69 0.60 27.4 02 0.38 0.04 < 0.01 0.02 0.41 < 5 1.7 19.14 5.76 12.33 0.62 26.3 03 0.34 0.04 0.01 0.01 0.37 7 1.8 15.50 5.04 10.42 0.58 26.6 04 0.28 0.04 < 0.01 0.01 0.31 5 1.2 16.99 5.54 10.65 0.56 25.3 05 0.23 0.04 < 0.01 0.03 0.27 .9 1.6 16.97 5.35 10.21 0.54 24.9 06 0.17 0.03 <. 0.01 0.02 0.20 7 1.3 10.70 3.19 6.39 -0.43 24.9 07 0.18 0.02 < 0.01 0.01 0.21 5 1.7 16.02 5.33 10.70 0.57 25.8 08 0.34 0.04 < 0.01 0.01 0.36 9 2.0 14.96 4.86 9.25 0.51 24.6 09 0.21 < 0.02 < 0.01 0.02 0.23 6 1.0 15.07 4.92 9.33 0.52 24.9 10 0.18 .0.03 < 0.01 0.02 0.21 14 1.3 12.60 3.84 6.96 0.42 23.0 11 0.24 0.02 < 0.01 0.03 0.28 12 2.6 7.94 2.23' 4.21 0.34 22.7 12 0.16 0.03 < 0.01 0.01 0.18 1.4 13.86 4.24 8.28 0.48 24.1 13 0.25 0.04 < 0.01 0.01 0.25 1.4 12.15 3.58 6.64 0.41 22.9 14 0.27 0.04 0.02 0.03 0.31 2.0 12.17 3.71 6.74 0.43 23.3 15 0.25 0.05 < 0.01 0.02 0.27 16.54 5.30 9.36 0.50 23.6 16 0.29 0.02 < 0.01 0.03 0.32 13.20 3.96 7.21 0.43 23.1 17 0.19 0.03 < 0.01 0.08 0.26 12.48 3.61 7.72 0.49 26.2 Maximum 0.46 0.12 0.02 0.45 1.07 16 _2.6 1 20.'83 6.51 18.35 0.87 32.4 Minimum 0.08 < 0.02 < 0.01 0.01 0.18 < 5 1.0 < 1 7.94 2.23 4.21 0.34 22.7 Average 0.29 . 0.04 0.01 0.05, 0.35 9 1.4 1 .15.25 4.61 11.05 0.61 27.6 #Tests 37 37 35 35 37 31 34 18 34 34 34 34 34 Site: SW-03 SOUTH TAHOE.PUBLIC UTILITY DISTRICT Stream: Indian Creek,.Mid ALPINE COUNTY SURFACEWATER.QUALITY DATA From: 1981 To: 2017 Coliforms Fecal/ Fecal - --- Blue Green Algae-------------------------------> Single Hard- Total E.coli Strep <------Colonies------> <-----Filaments------> <---Filamaments---> Cells D.O. SO4 ness Year MPN MPN MPN # cells # cells # um #cells mg/L mg/L mg/L 81 3,786 3,243 182 5 17 22 216 5 203 13 82 1,920 690 3,091 1,766 15,701 61, 415 18 470 6,490 83 280 160 50 4 13 6 33 3 178 10 8.65 8.77 67 84 930 170 190 5 3 2 2 166 14 22 8.65 3.40 53 85 12,215 12,215 135 -0 0 0 0 16 17 0 7.75 1.67 40 86 95 40 55 0 0 0 0 0 0 2,493 9.20. 10.44 55 87 .127 53 73 0 0 0 0 0 0 185 8.72' 13.80 67 88 1,490 1,317 2,208 0 0 0 0 115 4 1,916 9.25 14.38 110 89 1,283 633 185 0 0 0 0 69 4 946 8.72 7.28 90 1,298 -302 3,223 2 0 0 0 0 0 0 7.74 6.32 27 91 1,810 1,207 160 29 221 0 1 0 0 0 7.23 7.79 52 92 2,365 2,051 230 0 0 6 47 0 0 0 7.05 6.63 63 . 93 1,059 704 35 41 305 2 7 0 0 0 7.51 6.76 69 94 2,299 2,109 135 0 0 0 0 0 0 0 -8.14 6.56 93 95 828 645 -90 0 0 0 0 0 0 0 8.30 6.87 45 96 1,793 211 90 0 0 0 0 0 0 0 9.56 3.71 42 97 1,374 523 90 0 0 0 0 0 0 0 9.27 5.38 72 98 525 325 90 51 377 3 54 0 0 0 9.25 3.66 44 99 1,688 734 680 0 0 0 0 0 0 0 8.79 3.74 00 982 491 95 0 0 0 0 0 0 0 8.61 3.47 01 1,498 611 90 0 0 0 0 4 63 0 8.78 2.00 02 1,799 712 93 0 0 0 0 0 0 0 8.09 2.19 03 3,181 1,606 167 0 0 0 0 0 0 0 7.22 2.19 04 1,703 141 217 0 0 0 0 0 0 0 7.84 2.09 05 2,310 1,826 23 0 0 0 0 0 0 0 7.36 1.94 06 1,452 486 59 0 0 0- 0 0 0 0 8.37 1.50 07 2,001- 1,918 1,222 0 0 4 20 0 0 0 7.57 2.15 08. 2,147 1,542 260 0 0 0 0 0 0 0 7.53 2.48 09 4,282 991 57 0 0 0 0 0 0 0 7.07 2.62 10 3,238 1,436 4 0 0 3 11 0 0 0 7.50 2.18 11 1,913 309 51 0 0 0 0 0 0 0 9.16 1.25 12 1,450 1,338 26 0 0 0 0 0 0 0 8.04 2.12 13 3,061 1,311 27. 0 0 0 0 0 0 0 8.43 1.91 14 3,152 2,580 122 0 0 0 0 0 0 0 8.66 3.08 15 1,552 431 8.75 2.62 16 10,015 2,332 9.75 3.41 17 1,987 226 8.79 2.31 Maximum 12,215 12,215 3,223 1,766 15,701 61 415 166 470 6,490 .9.75 14.38 110 Minimum. 95 40 4 0 0 0 0 0 0 0 7.05 1.25 27 Average. 2,294 1,287 397 56 489 3 24 12 28 355 8.32 4.53 60 #Tests 37 37 34 34 34 34 34 34 34- 34 35 35 15 Site' : SW=03 Nitrate-Nitrogen Total Phosphorus 0.5 0.5 0.4 0.4 . 4 0.3 0.3 J J E E 0.2 0.2 0.1 0.1 V 1 i 0.0 0.0 oo . oh �1 00 �'` 03 0`' o� o0 0'` 03 0`' o� oo ,�3 ,�`' ,�� o'` w3 0o m� o0 0'` o0 oh CA eo Z' o0 oy oA oo No Ny NA —�Nitrate Linear(Nitrate) Total Phosphorus Linear(Total Phosphorus) Chlorides Total Dissolved Solids 50 500 40 400 30 300 J � E 20 � 200 10 100 0 0 -10 0'` o`' o`' oA 61 0� ,� 9`' o� o0 0�. o� o`' o� oo ,,`� ,,`' —�--Chlorides Linear(Chlorides) TDS Linear(TDS) Site: SW-04 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Indian Creek,Lower ALPINE COUNTY SURFACEWATER QUALITY DATA 201.7 Temp Alkalinity Turbidity SS TDS EC Chloride Total P PO4-P Boron K Date C pH mg/L NTU mg/L mg/L umhos mg/L mg/L mg/L mg/L mg/L 03/01/17 5.9 7.41 40.0 12.00 21.40 88 69.6. 2.28 0.068 0.020 1.66 .04/04/17 9.4 _7.08 43.6 4.40 7.72 88 .89.2 2.21 0.052 0.016 1.35 05/03/17 17.1 6.86 35.4 23.00 29.40 72 77.5 1.32 0.122 0.021 1.78 06/07/17 15.5 7.60 -37.1 8.50 8.82 67 79.2 1.06 0.087 0:024 1.39 07/12/17 15.4 7.24 43.1 3.50 6.84 77 88.5 1.40- 0.096 0.022 1.86 08/01/17 22.0 7.70 66.3 10.00 12.80 109 138 2.21 0.140 0.027 2.59 09/07/17 17.2 6.97 56.8 14.00 21.10 105 125 2.72 0.257 0.031 3.67 10/11/17 8.6 7.80 70.1 5.80 3.70 108 145 2.51 0.108 0.020 1.74 11/01/17 7.4 7.23 74.3 7.90 7.38 110 151 2.75 0.100 0.014 1.90 Maximum 22.0 .7.80 74.3 23.00 29.40 110 151 2.75 0.257 0.031 3.67 Minimum 5.9 6.86 35.4 3.50 3.70 67 69.6 1.06 0.052 < 0.014 1.35 Average 13.2 7.32 51.9 9.90 13.24 92 107 2.05 0.114 0.022 1.99 • #Tests 9 9 9 9 9 9 9 9 9 9 0 9 Site: SW-04 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Indian Creek,Lower ALPINE COUNTY SURFACEWATER QUALITY DATA 2017 Oil& TKN NH3-N NO2-N NO3-N Total N COD BOD Grease Ca Mg Na SAR -Na Date mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L % 03/01/17 0.231 0.024 < 0.010 0.597 0.828 9.24- 2.66 6.39 0.480 27.80 04/04/17 0.217 < .0.020 < 0.010 0.233 0.450 8.96 2.48 6.55 0.500 29.30 05/03/17 0:459 0.026 < 0.010 0.057 0.516 7.59 -2.13 4.70 0.390 25.40 06/07/17 0.325 < 0.020 < 0.010 0.034 0.359 8.39 1.67 3.90 0.320 22.30 07/12/17 0.319 < 0.020 < 0.010 0.015 0.334 10.00 2.74 4.45 0.320 20.00 08/01/17 0.447 0.033 < 0.010 0.020 0.467 15.00 4.05 7.03 0.420 21.00 09/07/17 0.778 0.046 < 0.010 0.053 0.831 12.10 3.48 6.06 0.390 21.10 10/11/17 0.326 0.051 < 0.010 0.122 0.448 14.10 4.20 8.06 0.480 24.30 11/01/17 0.284 0.038 < 0.010 0.140 0.424 15.70 4.83 8.86 0.500 23.90 Maximum 0.778 0.051 < 0.010 0.597 0.831 15.70 4.83 8.86 0.500 29:30 Minimum 0.217 < 0.020 < 0.010 0.015 0.334 7.59 1.67 3.90 0.320 20.00 Average 0.376 0.031 < 0.010 0.141 0.517 11.23 3.14 6.22 0.422 23.90 #Tests 9 9 9 9 9 0 0 0 9 9 9 9 9 Site: SW-04 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream:. Indian Creek,Lower ALPINE COUNTY SURFACEWATER QUALITY DATA 2017 Coliforms Fecal <--------------------------Blue Green Algae-------------------------------> Single Hard- Total E.co/i Strep <------Colonies-------> <-----Filaments------> <---Filamaments---> Cells D.O. . SO4 ness Date MPN MPN MPN # cells # cells # um #cells mg/L mg/L mg/L 03/01/17 248 < 1 10.40 2.70 04/04/17 214 10 9.89 1.68 05/03/17 - 2,400 . 41 8.33 1.51 06/07/17 7,330 1,785 8.73 1.26 07/12/17 3,654 185 8.70 1.16 08/01/17 9,804 862 7.74 1.10 09/07/17 54,750 8,130 -8.44 1.74 10/11/17 6,867 909 .10.30 2.35 11/01/17 2,098 206 10.40 2.41 Maximum 54,750 8,130 0 0 0 0 0 0 0 10.40 2.70 Minimum 214 < 1 0 0 0- 0 0 0 0 7.74 1.10 Average 9,707 1,348 9.21 1.77 #Tests 9 9 0 0 0 0 0 0 0 0 9 9 0 Site: SW-04 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Indian Creek,Lower ALPINE COUNTY SURFACEWATER QUALITY DATA From 1981 To: 2017 Temp Alkalinity Turbidity SS TDS -EC Chloride Total P PO4-P- Boron K Year C pH mg/L- NTU mg/L mg/L umhos mg/L mg/L mg/L mg/L mg/L 81 12.4 8.02 68 2.68 5 174 260 5.2 0.08 0.05 3.69 82 10.1 7.51 59 4.46 11 133 194 0.09 0.06 2.37. 83 7.6 8.04 51 -5.60 9 1.11 173. 17.4 0.10 0.06 2.20 84 10.7 7.58 64 3.86 13 116 187 -_ 15.8 0.08 0.05 2.33 85 10.8 7.58 67 4.44 9 127 219 19.9 0.08 0.33 2.60 86 9:1 7.80 47 4.86 6 109 140 10.6 0.07 0.02 1.73 87 9.0 7.09 61 2.64 4 127 195 17.0 0.05 0.03 2.46 88 9.1 -7.4.3 51 4.53 10 93 122 3.8 0.07 0.02 1.72 89 10.0 7.42 60 15.81 44.8 103 134 4.4 0.14 0.02 2.17 90 8.6 7.57 58 4.10 11.3 89 .122 2.6 0.09 0.04 0.03 1.73 91 8.9 7.44 62 5.48 15.3 99 133 3.3 0.11 0.03 0.02 2.20 92 9.2 7.82 63 2.10 3.8 99 135 2:9 0.07 0.03 0.03 1.86 93 8:0 7.45 64 2.97 6.1 99 139 3.2 0.08 0.05 0.02 2.15 94 8.1 7.54 61 2.61 4.5 93 131 2.5 0.07 0.03 0.01 1.64 95 10.4 7.51 61 3.53 7.0 102 130 2.8 0.09 0.05 0.02 1.94 96 10.9 7.43 60 3.59 10.1 92 125 2.1 0.08 0.03 0.02 1.93 97 9.0 7.40 53 3.61 7.0 85 110 2.0 0.08 0.03 0.02 1.56 98 8.4 7.05 50 7.17. 18.5 86 107 2.1 0.10 0.03 0.02 1.73 99 9.8 7.22 52 4.49 13.1 83 108 1.7 0.08 0.03 0.01 1.78 00 9.6 7.32 52 5.76 9.4 87 108 1.8 0.07 0.02 0.02 1.58 01 11.2 7.27 64 4.73 10.5 98 131 2.4 0.07 0.03 0.02 2.09 02 10.7 7.38 68 4.70 6.6 106 139 2.5 0.07 0.02 0.02 2.25 03 10.5 7.76 57 5.68 10.2 90 116 2.1 0.06 0.02 0.02 1.43 04 10.7 7.19 63 6.37 6.4 99 128 2.4 0.09 0.01 0.03 2.36 05 9.3 7.16 51 14.39 39.1 89 97 2.5 0.12 0.02 0.02 1.88 06 9.8 -7.19 45 8.23 6.6 77 74 1.6 0.06 0.02 0.02 1.43 07 11.4 7.58 53 12.27 13.9 81 111 2.1 0.10 0.02 0.01 2.11 08 10.0 7.71 53 6.30 5.4 88 115 3.0 0.08 0.02 0.01 2.16 09 9.8 7.43 47 12.69 17.3 81 93 2.1 0.09 0.02 0.01 1.81 10 9.8 7.42 49 7.26 10.8 89 106 2.9 0.10 0.03 0.01 2.46 11 10.3 7.68 44 6.11 7.9 76 91 1.7 0.06 0.02 0.01 1.58 12 11.6 7.57 63 6.10 3.8 97 133 2.3 0.08 0.03 0.02 1.92 13 .11.7 7.34 55 15.26 12.2 88 111 2.0 0.10 0.02 0.01 2.08 14 10.3 7.58 48 9.49 14.9 87 103 2.1 0.08 0.03 0.01 2.08 15 13.9 7.87 69 3.34 3.9 106 143 2.9 0.05 0.02 0.02 1.97 16 10.8 7.12 52 4.40 6.4 97 116 2.2 0.09 0.03 2.15 17 13.2 7.32 52 9.90 13.2 92 107 2.1 0.11 0.02 1.99 Maximum 13:9 8.04 69 15.81 44.8 174 260 19.9 0.14 0.05 0.33 3.69 Minimum 7.6 7.05 44 2.10 3.8 76 74 1.6 .0.05 0.01 0.01 1.43 Average 10.1 7.48 57 6.26 11.0 99 132 4.4 0.08 0.03 0.03 2.03 #Tests 37 37 37 37 37 37 37 36 37 28 35 37 Site: SW-04 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Indian Creek,Lower ALPINE COUNTY SURFACEWATER QUALITY DATA From: 1981 To: 2017 Oil& TKN NH3-N NO2-N NO3-N Total N COD BOD Grease Ca Mg_ Na SAR Na Year mg/L mg/L mg/L mg/L mg/L mg/L m /L mg/L mg/L m /L mg/L % 81 0.46 0.04 0.56 13 1 1 82 0.39 0.02 0.58 13- 1 < 1 83 0.46 0.05 < 0.01 0.37 0.57 12 1 < 1 84 0.37 0.09 0.01 0.09 0.46 9 1 < 1 16.49 4.54 12.17 0.66 28.3 85 0.34 0.05 0.01 0.20 0.57 10 1 < 1 16.41 4.43 14.70 0.74 28.7 86 0.44 0.10 0.01 0.28 0.73 11 2 < 1 10.28 3.40 8.11 0.57 29.1 87 0.28 0.04 < 0.01 0.06 0.35 8 1 < 1 14.34 4.58 14.98 0.80 28.7 88 0.29 0.04 < 0.01 0.01' 0.32 8 1 < 1 12.41 3.87 6.78 0.43 23.2 89 0.51 0.07 < 0.01 0.04 0.56 15 1.3 < 1 13.4.0 4.03 7.07 0.42 22.2 90 0.21 0.02 < 0.01 0.02 0.24 7 1.1 < 1 12.55 3.78 6.51 0.40 22.3 91 0.40 0.05 0.01 0.05 0.45 24 1.3_ < 1 13.81 4.02 8.16 0.48 23.0 92 0.29 0.03 0.01 0.02 0.32 26 1.2 1 13.67 4.03 7.23 0.44 22.6 93 0.43 0.04 0.01 0.06 0.49 14 1.4 < 1 14.23 4.10 7.38 0.44 22.5 94 0.30 0.02 0.01 0.04 0.35 9 1.0 < 1 13.18 3.93 6.90 0.42 22.7 95 0.57 0.02 0.01 0.05 0.63. 12 1.3 1 13.54 3.64 6.71 0.41 22.0 96 0.40 0.02 0.01 _ 0.05 0.46 6 1.3 1 13.26 3.70 6.68 0.41 22.4 97 0.38 0.04 0.01 0.13 0.53 .10 1.4 1 12.09 3.53 6.13 0.39 22.2 98 0.43 0.02 < 0.01 0.03 0.47 6- 1.3 < 1 10.62 3.10 5.83 0.40 23.5 99 0.31 < 0.02 < 0.01 0.02 0.34 6 1.2 10.44 3.15 6.30 0.44 24.7 00 0.32 < 0.02 < 0.01 0.02 0.36 < 5 1.1 10.45 3.25 5.69 0.39 23.0 01 0.32 < 0.03 < 0.01 0.01 0.34 23 1.1 13.30 4.06 6.88 0.43 22.5 02 0.41 -0.04 < 0.01 < 0.01 0.43 < 5 1:2 14.26 4.11 7.02 0.42 22.2 03 0.33 0.03 < 0.01 < 0.01 0.36 11 1.1 11.57 3.64 6.40 0.42 23.3 04 0.36 0.05 < 0.01 0.01 0.38 13 0.9 12.75 3.94 5.94 0.37 20.4 05 0.46 0.03 < 0.01 0.04 0.51 19 1.7 11.15 3.43 5.74 0.38 21.9 06 0.21 0.03 < 0.01 0.04 0.25 9 1.2 9.52 2.78 4.96 0.37 22.9 07 . 0.43 0.02 < 0.01 0.02 0.46 9 2.7 11.35 3.48 6.00 0.40 22.4 08 0.35 < 0.02 < 0.01 0.14 0.50 19 1.4 11.22 3.37 6.26 0.42 23.4 09 0.38 0.02 < 0.01 0.04 0.43 11 1.1 9.83 3.06 5.63 0.40 23.7 10 0.32 0.02 < 0.01 0.03 0.36 7 1.6 10.39 3.10 6.05 0.42 23.6 11 0.19 0.02 < 0.01 0.04 0.24 8 1.5 9.10 2.75 5.15 0.38 23.4 12 0.23 0.03 < 0.01 0.01 0.25 1.4 12.50 3.79 7.12 0.44 23.6 13 0.33 0.03 < 0.01 0.01 0.28 1.7 11.76 3.50 6.19 0.40 22.4 14 0.33 0.04 < 0.01 0.24 0.57 1.6 10.75 3.21 5.93 0.41 23.2 15 0.17 0.02 < 0.01 0.01 0.17 14.42 4.84 8.35 0.48 23.8 16 0.35 0.02 < 0.01 0.12 0.47 11.59 3.31 5.95 0.39 22.3 17 0.38 0.03 < 0.01 0.14 0.52 11.23- 3.14 6.22 0.42 23.9 Maximum 0.57 0.10 0.01 0.37 0.73 26 2.7 1 16.49 4.84 14.98 0.80 29.1 Minimum 0.17 < .0.02 < 0.01 < 0.01 0.17 < 5 0.9 < 1 9.10 2.75 4.96 0.37 20.4 Average 0.35 0.03 0.01 0.07 0.43 12 1.3. 1, 12.29 3.66 7.15 0.45 23.5 #Tests 37 37 35 35 37 31 34 18 34 34 34 34 34 Site: SW-04 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Indian Creek,Lower ALPINE COUNTY SURFACEWATER QUALITY DATA From: 1981 To: 2017 Coliforms Fecal/ Fecal <-------------------------Blue Green Algae-------------------------------> Single Hard- Total E.co/i Strep <------Colonies------>- <-----Filaments------> <---Filamaments---> Cells D.O. SO4 ness Year MPN MPN MPN # cells # cells. # um #cells mg/L mg/L mg/L 81 2,977 1,408 898 24 132 94 1,007 1 101 7 82 1,946 321 421 18 56 40 400 12 292 318 83 1,472 302 125 5 12 14 141 7 312 0 9.00 6.52 53 84 1,950 324 392 188 5 56 2 130 10 244 8.78 3.74 64 85 2,573 480 108 0 0 0 0 54 5 0 8.21 6.28 58 86 313 113 566 0 0 0 0 0 0 3,255 8.82 9.29 43 87 3,249 231 161 0 0 0 0 323 3 1,685 8.53 14.11 60 88 2,358 177 170 0 -0 46 277 162 6 0 9.14 5.55 54 -89 3,936 1,244 850 0 0 0 0 139 7 .1,593 7.62 5.22 90 570 110 175 2 0 0 1 0 1 0 7.75 4.83 32 91 2,095 1,462 1,245 .0 0 0 3 0 0 0 8.25- 5.46 41 92 937 55 485 3 188 9 144 0 0 0 9.03 4.70 55 93 1,453 387 95 0 0 0 0 0 0 0 8.56 4.97 40 94 293 76 260 0 0 0 0 0 0 0 8.17 4.97 36 95 2,183 1,260 110 0 0 0 0 0 0 0 8.87 5.35 38 96 3,268 637 235 0 0 0 0 0 0 0 8.15 2.98 38 97 2,298 226 120 0 0 0 0 0 0 0 9.40 3.50 41 98 3,105 2,549 320 0 0 0 0 0 0 0 8.90 3.30 37 99 920 188 90 0 0 0 0 0 0 0 8.48 3.37 00 1,119 194 55 0 0 0 0 0 0 0 8.36 2.70 01 630 235 320 0 0 0 0 0 0 0 8.78 1.51 02 .1,503 305 330 0 0 0 0 0 0 0 8.46 1.45 03 489 52 512 0 0 0 0 0 0 0 6.82 1.47 04 2,245 171 92 0 0 0 0 0 0 0 7.37 1.40 05 1,534 407 152 0 0 0 0 0 0 0 7.77 1.70 06 2,010 305 .58 0 0 0 0 0 0 0 7.53 1.15 07 913 97 1,222 0 0 .0 0 -0 0 0 6.38 1.69 08 1,080 893 5,965 0 0 4 48 0 0 0 7.70 2.10 09 3,324 571 217 0 0 7 62 0 0 0 8.30 2.01 10 3,325 2,022 13 0 0 0 0 0 0 0 7.81 2.07 11 1,694 80 22 0 0 0 0 0 0 0 8.10 1.42 12 1,518 917 80 0 0 6 77 0 0 0 6.71 1.78 13 3,119 76 27 0 0 0 0 0 0 0 6.68 1.73 14 4,756 1,614 242 0 0 0 0 0 0 0 9.37 3.01 15 1,821 160 9.53 2.15 16 4,132 360 9.33 2.71 17 9,707 1,348 9.21 1.77 Maximum 9,707 2,549 5,965 188 188 94 1,007 323 312 3,255 9.53. 14.11 64 Minimum. - 293 52 13 0 0, 0 0 0 0 0 6.38 1.15 32 Average 2,238 577 474 7 12 8 64 24 22 209 8.28 3.66 46 #Tests 37 37 34 34 .34 34 34 34 34 34 35 35 15 Site: SW '04 . Nitrate-Nitrogen Total Phosphorus 0 0.5 .5 - — 0.4 '0.4 0.3 0.3 _J --� 0.2 0.2. A A A 1�;�_ - I V x - Ac � 0.1 0.1 0.0 0.0 7M an CD �- M to P M M Ln f� 0) M Ln f� m to r- 0, M to r- O M Ln O M Ln f- 00 00 00 0o co O O O O O O O O O O r 00 00 00 00 Go W O O O O O O O O O —+--Nitrate Linear(Nitrate) *—Total Phosphorus Linear(Total Phosphorus) Chlorides Total Dissolved Solids 50 500 40 400 30 300 20 200 10 100 0 M Ln O �- M Ln 1, M a-- M Lo f� O) �- M to r- - Oo ao co OD OD rn rn rn rn rn O O O O O .- . 0 M to 1� O M Ln h O — LM LO 1- M a- M M f_ 1 0 00 00 00 00 00 O O O O M O O O O O e- . ---*--Chlorides Linear(Chlorides) TDS Linear(TDS) Site: SW-05 SOUTH TAHOE PUBLIC UTILITY.DISTRICT Stream: Carson River,Paynesville ALPINE COUNTY SURFACEWATER QUALITY DATA _ 2017 Temp Alkalinity Turbidity SS TDS EC Chloride Total P PO4-P Boron K Date C pH mg/L NTU mg/L mg/L umhos mg/L mg/L mg/L mg/L mg/L 01/18/17 2.2 7.57 28.6 2.00 3.64 58 65.8 .1.960 0.023 < 0.010 1.20 02/01/17 1.6 6.88- 32.4 1.10 1.18 68 78.9 2.740 0.010 < 0.010 1.24 03/01/17 2.0 6.93 34.1 - 1.30 2.41 68 .84.2 2.770 -0.013 0.014 1.37 04/04/17 4.2 7.20 26.7 2.30 4.65 55 57.1 1.150 0.023 <. 0.010 0.93 05/03/17 8.1 6.93 24.4 8.50 27.00- 48 45.4 0.571 0:068 < 0.010 1.00 06/07/17 6.8 7.86 21.2 6.00. 15:90 34 43.6 < 0.500 0.046 < 0.010 0.90 07/12/17 12.0 7.25 23.4 4.00 8.18 39 47.3 < 0.500 0.041 < 0.010 < 1.00 08/01/17 14.9 7.23 29.7. 2.20 3.32 48 61.0 0.625 0.025 < 0.010 1.09 09/07/17 16.8 6.72 35.7 2.00 '2.60 61 75.0 1.050 0.034 0.011 1.39 10/11/17 7.2 7.24 33.7 1.40 2.42 54 68.6 . 0.819 0.013 < 0.010 1.11 11/01/17 6.1 7.24 38.3 0.84 0.63 66 78.1 1.060 0.020 < 0.010 1.51 12/05/17 0.2 7.97 34.6 1.60 2.35 58 73.8 1.280 0.013 < 0.010 < 1.00 Maximum .16.8 7.97 38.3 8.50 27.00 68 84.2 2.770 -0.068 0.014 1:51 Minimum 0.2 6.72 21.2 0.84 0.63 34 43.6- < 0.500 < 0.010 < 0.010 0.90 Average 6.8 7.25 30.2 2.77 6.19 55 64.9 1.252 0.027 0.010 1.14 #Tests 12 12 .- 12 12 12 12 12 12 12 12 0 12 Site: SW-05 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Carson River,Paynesville ALPINE.COUNTY SURFACEWATER QUALITY DATA 2017 Oil&. TKN NH3-N NO2-N N.03-N Total N COD BOD Grease Ca Mg Na SAR Na Date mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L % 01/18/17 .0.140 < 0.020 < 0.010 0.059 0.199 7.17 1.82 3.68 0.320 22.90 02/01/17 0.159 < 0.020 < -0.010 0.025 0.184 7.76 2.04 4.52 0.370 25.10 03/01/17 0.124 < 0.020 < 0.010 0.024- 0.148 8.31 2.12 4.64 0.370 24.40 04/04/17 0.107 < -0.020 < 0.010 < 0:010 0.107 6.01 1.51 3.20 0.300 23:70- 0.5/03/17 0.147 < 0.020 < 0.010 < 0.010 0..147 5.40 -1.49 2.47 0.240 20.50 06/07/17 0.133 < 0.020 < 0.010 < 0.010- 0.133 4.83 1.29 2.00 0.210 19.00 07/12/17 0.129 < 0.020 < 0.010 < 0.010 0.129 5.64. 1.44 2.30' -0.220 19.00 08/01/17 0.135 0.024 < .0.010 < 0.010 0.135 6.73 1.80 3.04 0.270 20.50 09/07/17 0.188 0.026 < 0.010 < 0.010 0.188 7.90 2.02 4.06 0.330 22.80 10/11/17 0.213 0.029 < .0.010 < 0.010 0.213 6.79 1.71 3.71 0.330 24.10 11/01/17 0.157 < 0.020 < 0.010 . < 0.010 0.157 8.77 2.36 4.79 0.370 23.70 12/05/17 0.165 < 0.020 < 0.010 0.018 0.183 T.68 1.97 3.52 0.290 21.10 Maximum- 0.213 0.029 < 0.010 0.059 0.213 8.77 2.36 4.79 0.370 25:10 Minimum < 0.107 < 0.020 < 0.010 < 0.010 -0.107 4.83 1.29 2.00 0.210 19.00 Average 0.150 0.022 < 0.010 0.017 0.160 6.92 1.80 3.49 0.302 22.23 #Tests 12 12 12 12 12 0 0 0 12 .12 12 12 12 Site: SW-05 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Carson River,Paynesville ALPINE COUNTY SURFACEWATER_.QUALITY DATA 2017 Coliforms Fecal <--------------------------Blue Green Algae-------------------------------> Single Hard- Total E.coli Strep <------Colonies------> <-----Filaments------> <---Filamaments---> Cells D.O. SO4 ness Date MPN MPN MPN # cells # cells # um #cells mg/L mg/L mg/L 01/18/17 98 20 10.30 2.08 02/01/17 126 3 11.80 2.18 03/01/17 59 < 1 12.30 2.03 04/04/17 53 2 11.30 1.18 05/03/17 93 2 10.00 0.85 06/07/17 260 21 10.30 0.71 07/12/17 2,400 72 9.04 0.91 08/01/17 613 23. 8.63 1.14 09/07/17- 2,755- 225 8.55 . 1.45 10/11/17 214 40 10.20 1.49 11/01/17 186 27 10.40 1.86 12/05/17 111 5 12.60 2.06 Maximum 2,755 225 0 -0 0 0 0 0 0 12.60 2.18 Minimum 53 < 1 0 0 0 0 0 0 0 8.55 0.71 Average . 581 37 10.45 1.49 #Tests 12 12 0 0 0 0 0 0 0 0 12 12 0 Site: SW-05 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Carson River,Paynseville ALPINE COUNTY SURFACEWATER QUALITY DATA From 1981 To: 2017 Temp Alkalinity Turbidity SS- TDS - EC Chloride Total-P PO4-P' Boron K Year C pH mg/L NTU mg/L mg/L umhos mg/L mg/L mg/L mg/L mg/L 81 9.9 7.93 36 1.15 4 64 78 1.8 0.03 0.01 1.52 82 6.4 7.61 28 2.57 23 49 57 0.04 0.02 1.11 83 6.0 7.73 30- 2.45 8 43 60 0.9 0.03 0.03 1.17 84 8.4 7.78 33 2.08 13 49 70 1.2 0.04 0.02 1.46 85 7.6 7.86 37 5.11 9 50 78 1.7 0.05 0.24 2.20 86 6.5 7.91 32 1.92 6 53 67 1.4 0.03 0.01 1.35 87 9.7 7.54 42 1.09 4 68 91 2.1 0.04 0.01 1.88 88 9.2 7.69 42 1.10 4 80 100 3.3 0.02 0.02 1.81 89 8.7 7.75 36 1.65 7.3 60 88 2.2 0.03 0.02 1.92 90 9.4 7.77 _.40 1.61 4.8 73 96 2.0 0.04 0.02 0.02 1.73 91 9.9 7.73 40 2.11 6.3 71 86 2.3 0.04 0.01 0.02 1.70 92 9.3 8.01 . 40 1.37 4.6 69 90 2.0 0.03 0.01 0.02 1.65 93 7.2 7.80 33 2.01 7.0 58 77 1.7 0.03 0.01 0.02 1.40 94 8.8 7.93 39 1.10 2.4 66 -88 1.5 0.03 0.01 0.01 1.68 95 7.1 7.69 31 1.70 10.7 54 68 1.4 0.03 0.01 0.01 1.28 96 9.1 7.57 32 1.18 5.8 59 72 1.4 0.03 0.01 0.02 1.37 97 8.1 7.49 32 6.29 19.3 59 68 1.1 0.05 0.01 0.02 1.46 98 6.8 7.27 33 1.31 5.0 56 72 1.4 0.02 0.01 0.01 1.43 99 8.1 7.37 33 1.12 3:7 59 74 1.5 0.03 0.01 0.01 1.61 00 7.3 7.33 35 1.34 6.3 61 77 1.4 0.03 0.01 0.02 1.53 01 11.4- 7.49 38 1.63 3.6 62 84 1.6 0.02 0.01 0.01 1.72 02 8.6 '7.46 37 1.62 2.8 64. 80 1.8 0.02 < 0.01 0.01 1.57 03 9.0 7.68 36 4.27 10.5% 61 74 1.8 0.03 0.01 0.01 1.50 04 8.7 7.35 36. 3.97 10.4 62 76 1.8 0.03 0.01 0.02 1.56 05 7.9 7.26 34 2.98 5.6 59 62 2.0 0.02 0.01 0.02 1.41 06 8.0 7:25 29 3.58 6.7 53 49 1.4 0.03 0.01 0.02 1.24 07 9.9 7.70 36 1.79 3.4 63 76 1.6 0.02 < 0.01 0.01 1.60 08 7.7 7.71 36 1.94 2.8 61 72 1.8 0.02 < 0.01 0.01 1.61 09 7.5 7.55 35 2.97 5.2 58 74 1.5 0.02 < 0.01 0.01 1.49 10 5.9 7.51 33 3.55 5.6 59 73 1.5 0.02 0.01 < 0.01 1.52 11 5.8 7.62 31 3.51 6.5 57 .66 1.1 0.03 0.01 0.01 1.37 12 8.2 7.46 37 1.95 3.1 61 78 1.3 0.02 0.01 0.01 1.58 13 8.7 7.41 35 1.69 2.9 60 72 1.2 0.02 0.01 0.01 1.40 14 7.8 7.54 39 1.29 2.0 65 83 1.5 0.02 0.01 0.01 1.62 15 8.8 7.35 38 1.72 2.6 68 85 1.4 0.02 0.01 0.01 1.59 16 7.1 7.08 33 2.42 5.0 63 73 1.6 0.03 < 0.01 1.42 17 6.8 7.25 30 2.77 6.2 55 65 1.3 0.03 0.01 1.14 'Maximum 11.4 8.01 42 6.29 23.0 80 100 3.3 0.05 0.02 0.24 2.20 Minimum 5.8 7.08 28 1.09 2.0 43' 49 0.9 0.02 < 0.01 0.01 1.11 Average 8.1 7.58 35 2.27 6.5 60 76 1.6 0.03 0.01 0.02 1.53 #Tests 37 37 37 37 37 37 37 36 37 28 35 37 Site: 'SW-05 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Carson River,Paynseville ALPINE COUNTY SURFACEWATER QUALITY-DATA From: 1981 To: -2017 Oil.& TKN NH3-N NO2-N NO3-N Total N -COD BOD Grease Ca Mg. Na SAR Na Year mg/L- mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L % 81 0.23 0.03 .0.32 6 1 < 1 82 0.19 0.01 0.29 9 1 1 83 0.19 -0.05 < 0.01 0.04 0.23 7 1 < 1 - 84 0.27 0.08 0.01 0.03 0.30 -5 1 1 6.85 1.93 3.42 0.29 21.1 85 0.24- 0.04 < 0.01 0.04.. 0.28 7 1 < 1 7.81 2.15 3.85 0.31 21.0 86 0.19 0.04 < 0.01 0.05 0.24 5 1 1 6.70 1.90 3.11 0.26 19.9 87 0.21 0.03 < 0.01 0.06 0.28 5 1 < 1 8.73 2.53 4.93 0.37 23.2 88 0.21 0.03 < 0.01 0.09 0.32 5 1 < 1 9.49 2.76 5.88 0.41 24.7 89 '0.20 0.03 < 0.01 0.06 0.27' 6 1.1 < 1 7.90 2.22 4.20 0.33 21.6 90 0.18 -0.02 < 0.01 0.07 0.26 6 1.0 2 8.99 2.45 .4.92 0.36 22.9 91 0.20 0.03 0:01 0.11 .0.31 10 1.0 < 1 8.77 2.42 4.73 0.35 22.7 92 0.20- 0.03: 0.01 0.04 .0.25 8 , 1.0 1 8.89 2.33 4.74 0.36 23.0 93 0.21 0.03 0.01. 0.06 0.28 8 1.2 < 1 7.81 2.05 3.83 0.30 21.2 94 0.19 0.02 _ 0.01 0.04 0.25 < 5 1.0 < 1 8.69 2.29 4.74 0.36 23.4 95 0.26 0.02 0.01 0.04 0.31 7 1.0 1 7.24 1.85 3.64 0.30 21.9 96 0.24 0.02 0.01 0.05 0.31 2 1.2 1 7.40 1.93 3.82 0.31 22.3 97 0.16 0.03 0.01 0.10 0.27 5 1.0 1 7.34 2.09 3.86 0.32 22.3 98 0.18 0.02 < 0.01 0.05 0.24 < 5 0.9 < 1 6.85 1.89 3.79 0.32 23.2 99 0.23 < 0.02 < 0.01 0.04- 0.28 < 5 1.0 7.03 1.97 4.05 0.34 23.8 00 0.16 0.02 0.01 0.03 0.19 < 5 1.0 6.79 2.05 4.29 0.37 25.0 __01 0.18 0.02 < 0.01 0.02 0.21 15 1.0 8.07 2.24 4.96 0.39 25.0 02 -0.22 0.03 < 0.01 0.02 0.25 < 5 0.9 7.80 2.14 4.86 0.39 25.4 03 0.21 0.03 0.01 0.03 0.25 6 0.9 7.65 2.19 4.59 0.37 24.7 04 0.19 0.03 < 0.01 0.03 0.23 8 0.7 7.51 2.21 4.53 0.37 24.3 05 0.20 0.02 < 0.01 0.03 024 12 1.3 7.45 -2.07 4.26 0.35 23.8 06 0.13 0.02- < 0.01 0.02 0.16 8 0.9 6.51 1.80 3.39 0.30 21.6 07 0.14 .0.02 < 0.01 0.01 0.16 8 1.1 7.90 2.20 4.87 0.39 25.1 08 0.18 < 0.02 < 0.01 0.01 0.20 8 1.0 7.98 2.16 4.79 0.38 24.9 09 0.17 0.02 < 0.01 0.01 0.20 11 0.8 7.70 2.01 4.45 0.36 24.5 10 0.10 0.02 < 0.01 0.01 0.12 34 1.1 7.44 2.06. 4.14 0.34 23.3 11 0.10 0.02 < 0.01 0.02 0.13 8 1.4 6.71 1.82 3.58 0.31 22.7 12 0.13 0.23 < 0.01 0.01 0.15 1.4 7.81 2.06 4.34 0.35 23.6 13 0.14 0.03 < 0.01_ 0.02 0.15 1.0 7.93 2.00 4.29 0.35 23.5 14' 0.13 .0.03 < 0.01 0.01 0.14 1.0 8.41 2.20 4.95 0.39 25.0 15 0.14 < 0.02 < 0.01 0.01 0.14 8.85 2.27 4.93 0.38 24.1 16 0.16 < 0.02 < 0.01 0.03 0.18 7.81 2.03 4.32 0.35 23.8 17' 0.15 0.02 < 0.01 0.02 0.16 6.92 1.80 3.49 0.30 22.2 Maximum 0.27 0.23 0.01 0.11 0.32 34 1.4 2 9.49 2.76 5.88 0.41 25.4 Minimum 0.10 0.01 < 0.01 0.01 0.12 2 0.7 < -1 6.51 1.80 3.11 0.26 19.9 Average -0.18 0.03 0.01 0.04 0.23 8 1.0 1 7.76 ..2.12 4.31 0.35 23.3 #Tests 37 37 35 35 37 31 34 18 34 34 34 34 34 Site: SW-05 - SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Carson River,Paynseville ALPINE'COUNTY SURFACEWATER QUALITY DATA From: 1981 To: 2017 Coliforms Fecal/ Fecal <--------------------------Blue Green Algae------------ Single Hard- Total E.coli Strep <------Colonies------> <-----Filaments------> <---Filamaments---> Cells D.O. SO4 ness Year MPN MPN MPN # cells # cells # um #cells mg/L mg/L mg/L 81 1,388 700 492. 173 2,303 36 230 2 81 11 82 506 456 226 26 60 62 738 10 285 16 83 1,198, -1,048 360 6 12 18 158 22 396 4 9.37 4.05 26 84 2,506. 822 -286 90 56 16 36 368 41 180 9.22 1.44 23 85. 2,904 1,227- 299 0 0 52 280 58 1 139 9.13 2.25 29 86 2,951 1,179 378 0 0 23 346 46 1 23 9.63 9.08 27 87 2,643 607 348 0 0 0 0 208 4 5,194 9.48 5.71 32 88 815 238 93 0 0 0 0 705 25, 1,158 11.15 5.26 89 945 511 228 0 -' 0 0 0 600 24 1,685 9.81 4.47 90 1,343 232 450 0 46 0 0 0 0 0 8.83 4.96 31 91 398 83 230 0 0 0 01 0 0 0 9.05 5.22 30 92 886 181 65 0 0 0 0 0 0 0 9.80 5.06 30 93, 886 491 680 0 0 0 01 0 0 0 10.50 4.33 26 94 1,390 672 90 0 0 3 7& 0 0 0 9.93 5.27 33 95 218. 41 90 0 0 0 0 0 0 0 9.82 4.64 24 96 918 248 55 0 0 0 0 0 0 01 8.93 2.57 26 97' 243, 41 65 0 0 0 0 0 0 0. 9.88 3.26 26 98 585 80 35- 0 0 18 132 0 0 0 9.97 2.47 21 99 718 83 35 0 0 0 0 0 0 0 9.41 2.50 00 263 90 30 0 0 0 0 0 0 0 10.02 '2.70 01 210 58 40 0 0 0 0 0 0 0 9.29 2.60 02 250 78 82 0 0 0 0 0 0 0 9.63 2.70 03 334 54 33 0 0 0 0 0 0 0 8.65 2.39 04 316 51 7 0 0 0 0 0 0 0 8.95 2.73 05 72 29 51 4 266 35 216 0 0 0 10.13 2.56 06 259 77 23 0 0- 0 0 0 0 0 9.86 1.60 07 202 63 33 -0 0 0 0 0 0 0 9.33 2.42 08 512 98 162 0 0 0. 0 4 821 0 9.84 2.86 09 333 106 48 0 0 0 .0 0 0 0 9.90 2.54 10 983 949 68 0 0 0 0 0 0 0 9.37 2.49 11 389 143 9 0 0 3 54 0 0 0 10.50 1.64 12 321 74 4 0 0 0 0 0 0 0 9.14 2.28 13 740 62 7 0 0 0 0 0 0 0 9.71 2.30 14 1,545 108 6 0 0 0 0 0 0 0 9.62 2.63 15 1,087 104 10.46 2.75 16 1,167 59 11.46 2.39 17 581 37 10.45 1.49 Maximum 2,951 1,227 680 .173 2,303 62 738 705 821 5,194 11.46 9.08 33 Minimum 72 29 4 0 0 0 0 0 0 0 8.65 1.44 21 Average 892 302 150 9' 81 8 66 59 49 247 9.72 3.30 27 #Tests 37 37 34 34 _ 34 34 34 34 34 34 35 35 14 Site: SW=05 Nitrate-Nitrogen Total Phosphorus 0.5 0.5 0.4 0.4 0.3 0.3 E E 0.2 0.2 0.1 0.1 Ok Iw o� �o 0.0 0.0 . CP eo ob o0 0^ 03 0`' o'� Oo ^^ ^'� ^`� ^'� o^ o0 0� OA. oo e^ o� e`' IS, o'� o`' o'� oo ^^ ^'� ^`' — Nitrate Linear(Nitrate) —+--Total Phosphorus Linear(Total Phosphorus) Chlorides Total Dissolved Solids 10 250 9 8 200 7 6 150 _j J E 5 E 4 100 3 2 50 1Iw 0 0 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 0^ O`� gbh %X 61 O^ 0"' 9p OA O°' O^ O"' O� O� O§' ^^ ^b ^h ^A —�—Chlorides Linear(Chlorides) TDS Linear(TDS) Site: SW-06 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Carson River,Stateline ALPINE COUNTY SURFACEWATER QUALITY DATA 2017 Temp. Alkalinity Turbidity SS TDS EC Chloride. Total P PO4-P Boron K Date C pH mg/L NTU mg/L mg/L umhos mg/L mg/L mg/L mg/L mg/L 01/18/17 2.2 7.03 28.-8 1.90 -4.28 60 63.1 2.12 0.021 < 0.010 1.24 02/01/17 1.4 6.90 33.0 1.20 1.53 69 81.3 3.02 0.018- < 0.010 1.27 03/01/17 2.5 7.36 34.3 1.00 2.80 67 86.8 2.89 0.013 < 0.010 1.37 04/04/17 4.4 7.32 26.9 2.70 5.83 55 58.2 1.18 0.022 < 0.010 0.96 05/03/17 7.8 7.18 23.8 8.90 27.20 43 48.7 0.63 0.114 < 0.010 1.09 06/07/17 7.5 7.81 21.4 9.10 33.00 40 44.4 < 0.50 0.050 < 0.010 0.91 07/12/17 .- 13.0 7.17 24.0 3.60 9.31 38 49.0 0.51 0.039 < 0.010 1.06 08/01/17 14:9 7.26 30.1 3.30 6.33 48 63.0 0.73 0.029 < 0.010 1.25 09/07/17 17.3 6.77 39.5 1.80 1.29 67 87.4 1.67 0.026 < 0.010 1.50 10/11/17 7.6 7.42 34.7 1.60 2.56 58 70.1 0.95 0.010 < 0.010 1.08 11/01/17 6.2 7.35 39.5 0.70 0.71 66 80.8 1.19 0.017 < 0.010 1.54 12/05/17 0.4 7.90 34.8 1.50 2.86 60 75.8 1.37 0.021 < 0.010 < 1.00 Maximum 17.3 7.90 39.5 9.10 33.00 69 87.4 3.02 0.114 < 0.010 1.54 Minimum 0.4 6.77 21.4 0.70 0.71 38 44.4 < 0.50 < 0.010 < 0.010 0.91 Average 7.1 7.29 30.9 3.11 8.14 56 67.4 1.40 0.032 < 0.010 1.19 #Tests 12 12 12 12 12 12 12 12 12 12 0 12 Site: SW-06 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Carson River,.Stateline ALPINE COUNTY SURFACEWATER QUALITY DATA 2017 Oil& TKN NH3-N NO2-N NO3-N Total N COD BOD Grease Ca Mg Na SAR Na Date mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L % 01/18/17 0.141 < 0.020 < 0.010 0.083 0.224. 7.40 1.88 3.77 0.320 22.80 02/01/17 0.132 < 0.020 < 0.010 0.060 0.192 7.88 2.08 4.70 0.380 25.50 03/01/17 0.106 < 0.020 < 0.010 0.056 0.162 8.44 2.14 4.79 - 0.380 24.80. 04/04/17 0.110 < 0.020 < 0.010 0.010 0.120 6.13 1.53 3.26 0.310 23.70 05/03/17 0.260 <. 0.020 < 0.010 < 0.010 0.260 5.49 1.57 2.54 0.250 .20.40 06/07/17 0.139 < 0.020 < 0.010 < 0.010 0.139 4.82 1.36 2.06 0.210 19.20 07/12/17 0.120 < 0.020 <- 0.010 0.018 0.138 5.82 1.49 2.38 0.230 19.00 08/01/17 0.1.27 0.028 < 0.010 -0:022 0.149 6.93 1.89 3.18 0.280 20.60 09/07/17 0.154 0.029 < 0.010 0.091 0.245 9.04 2.38 4.77 0.360 23.20 10/11/17 0.210 0.036 < 0.010 0.014 0.224 6.96 1.78 3.92 0.340 24.60 11/01/17 0.138 < 0.020 < 0.010 0.019 0.157 8.98 2.43 4.85 0.370 23.50 12/05/17 0.148 < 0.020 < 0.010 0.038 0.186 7.71 2.01 3.47 0.290 20.80 Maximum 0.260 0.036 < 0.010 0.091 0.260 9.04 2.43 4.85 0.380 25.50 Minimum 0.106 < 0.020 < 0.010 < 0.010 0.120 4.82 1.36 2.06 0.210 19.00 Average 0.149 0.023 < 0.010 0.036 0.183 7.13 1.88 3.64 0.310 22.34 #Tests 12 12 12 12 12 0 0 0 12 12 12 12 12 Site: SW-06 - SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Carson River,Stateline ALPINE COUNTY SURFACEWATER QUALITY DATA 2017 Coliforms Fecal <--------------------------Blue Green Algae-------------------------------> Single Hard- Total E.coli Strep <------Colonies------> <-----Filaments------> <---Filamaments---> Cells D.O. SO4 ness Date MPN MPN MPN # cells # cells # um #cells mg/L mg/L mg/L 01/18/17 138 5 10.30 2.28 02/01/17 84 2 11.90 2.37 03/01/17 39 . < 1 12.30 2.21 04/04/17 162 88 11.50 1.22 05/03/17 110 6 10.40 0.87 06/07/17 308 23 10.10 0.72 07/12/17 1,674 50 9.43 0.94 08/01/17 1,274 62 8.65 1.21 09/07/17 225 138 9.01 1.96 10/11/17 816 219 10.10 1.54 11/01/17 236 23 10.50 1.96 12/05/17 179 7 12.70 2.20 Maximum 1,674 219 0 0 0 0 0 0 0 12.70 2.37 Minimum 39 < 1 - 0 0 0 0 0 0 0 8.65 0:72 Average 437 52 10.57 1.62 #Tests 12 12 0 0 0 0 0 0 0 0 12 12 0 Site: SW-06 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Carson River,Stateline ALPINE COUNTY SURFACEWATER QUALITY DATA From 1981 To: 2017 Temp Alkalinity Turbidity. SS TDS EC Chloride Total P PO4-P Boron K Year C pH mg/L NTU mg/L mg/L umhos mg/L mg/L mg/L mg/L mg/L 81 10.7 7.75 38 1.00 3 69 83 1.8 0.02 0.01 1.72 82 83 8.9 7.70 32 3.43 11 55 63 1.1 0.04 0.03 1.46 84 10.1 7.72 38 2.42- 10 56 82 2.2 0.04 0.02 1.59 85 9.5 7.84 42 1.88 4 63 99 4.0 0.03 0.30 1.85 86 7.2 7.90 35 1.98 7 58 76 2.3 0.03 0.01 1.47 .87 10.6 7.36 48. 1.38 4 79 110 4.3 0.03 0.02 2.19 88 10.7 7.59 48 3.46 9 90 125 6.1 0.04 0.02 2.10 89 9.8 7.69 42 1.72 6.5 77 109 5.0 0.03 0.02 1.75 90 .9.6 7.82 47 1.86 3.0 88 118 4.9 0.03 0.02 0.02 2.06 91 9.4 7.62 45 1.82 5.2 78 107 4.4 0.05 0.01 0.02 1.95 92 .10.1 7.81 45. 1.83 3.8 79 113 4.2 0.03 0.01 0.02 1.88 93 7.8 7.72 35 2.13 8.3 63 82 2.2 0.03 0.01 0.02 1.54 94 9.9 7.85 42 0.91 2.3 72 98 2.4 0.03 0.01 0.02, 1.80 95 8.0 7.62 32 1.86 11.7 61 75 2.0 0.04 0.01 0.01 1.34 96 9.7 7.51 35 1.69 5.4 63 80 2.1 0.03 0.01 0.02 1.46 97 9.1 7.53 34 2.53 8.2 62 76 1.7 0.04 0.01 0.02 1.73 98 8.9 7.31 35 1.64 5.6. 61 78 2.0 0.03 0.01 0.01 1.49 99 10.5 7.33 33 1.09 6.7 60 78 1.6 0.03 < 0.01 0.02 1.59 00 10.0 7.30 36 1.69 6.9 66 82 2.2 0.03 < 0.01 0.02 1.61 01 12.4 7.46 38 1.96 4.0 65 92 2.2 0.02 0.01 0.01 1.74 02 11.0 7.66 36 1.84 3.9 64 81 2.2 0.03 < 0.01 0.02 1.59 03 9.7 7.61 37 3.29 6.6 67 84 2.5 0.03 0.01 0.02 1.65 04 10.5 7.52 37 4.30 9.6 65 81 2.3 0.03 < 0.01 0.02 1.56 05 9.3 7.37 34 2.98 5.8 61 69 2.6 0.02 < 0.01 0.02 1.47 06 9.2 7.11 30 3.61 8.5 54 49 1.5 0.03 < 0.01 0.02 1.27 07 11.7 7.73 33 2.03 3.9 63 83 2.1 0.02 < 0.01 0.01 1.77 08 11.5 7.94 38 1.56 2.4 63 86 2.8 0.03 < 0.01 0.01 1.86 09 9.5 7.73 36 2.71 5.8 65 80 2.1 0.02 < 0.01 0.01 1.63 10 8.1 7.60 32 3.16 5.9 57 72 1.6 0.03 0.01 0.01 1.62 11 8.3 7.73 31 3.97 9.1 56 .68 1.3 0.04 0.01 0.01 1.60 12 11.0 7.29 40 1.66 3.1 62 81 1.5 0.02 0.01 0.01 1.67 13 11.2 7.51 -36 2.15 4.0 62 74 1.4 0.03 0.01 0.01 1.45 14 9.7 7.57 39 1.18 2.2 67 89 2.0 0.02 0.01 0.01 1.84 15 9.1 7.36 40 2.06 5.2 69 88 1.9 0.02 < 0.01 0.02 1.66 16 7.8 7.21 34 2.37 5.2 66 76 1.9 0.03 < 0.01 1.47 17 7.1 7.29 31 3.11 8.1 56 67 1.4 0.03 < 0.01 1.19- Maximum 12.4 7.94 48 4.30 11.7 90 125 6.1 0.05 0.02 0.30 2.19 Minimum 7.1 7.11 30 0.91 2.2 54 49 1.1 0.02 < 0.01 0.01 1.19 Average 9.7 7.57 37 2.23 6.0 66 85 2.5 0.03 0.01 0.02 .1.66 #Tests 36 36 36 36 36 36 36 36 36 28 34 36 Site: SW-06 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Carson River,Stateline ALPINE COUNTY SURFACEWATER QUALITY DATA From: -1981 To: 2017 Oil& - TKN NH3-N- NO2-N NO3-N Total N COD BOD Grease Ca Mg Na SAR Na Year mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L m /L mg/L mg/L % 81 0.22 0.04 0.30 6 1 < 1 82 83 0.18 0.02 < 0.01 0.02 0.21 7 - 1 < 1 84 0.27 0.07 < 0.01 0.02 0.29 6 1 < 1 8.06 2.37 3.69 0.29 19.9 85 0.21 0.04 < 0.01 0.02 0.24 7 1 < 1 9.81 2.83 4.91 0.35 21.3 86 0.20 0.04 < 0.01 0.03 0.23 6 1 < 1 7.60 2.28 3.54 0.28 19.5 87 0.21 0.03 < 0.01 0.02 0.24 5 1 < 1 10.29 3.43 5.58 0.38 22.3 88 0.28 0.04 < 0.01 0.02 0.31 7 1 1 11.73 3.73 6.26 0.40 22.2 89 0.21 0.03 < 0.01 0.06- 0.27 6 1.2 < 1 10.19 3.09 5.18 0.35 21.3 90 0.18 0.02 < 0.01 0.04 0.23 5 1.1 < 1 10.95 3.36 -5.41 0.36 21.2 91 0.21 0.03 0.01 0.03 0.25 9 1.1 1 10.65 4.74 5.30 0.34 19.6 92 0.23 0.03 0.01 -0.02 0.25 8 1.2 1 10.53 2.99 5.02 0.34 20.9 93 0.22 0.02 0.01 0.04 .0.28 14 1.3 < 1 8.11 2.21 4.06 0.32 21.4 94 0.22 0.02 0.01 0.02 0.25 -6 1.1 < 1 9.48 2.58 5.12 0.37 23.2 95 0.29 0.02 0.01 0.07 0.37 8 1.2 1 7.75 2.03 3.93 0.31 22.0 96 0.25 0.02 0.01 0.05 0.31 3 1.1 1 7.98 2.21 4.03 0.32 21.8 97 0.20 0.03 0.01 0.15 0.36 5 1.2 1 8.03 2.54 4.14 0.32 21.5 98 0.20 0.02 < 0.01 0.05_ 0.26 < 5 1.0 < 1 7.50 2.06 4.01 0.33 22.7 99 0.21 0.02 < 0.01 0.03 0.24 < 5 0.9 7.12 2.04 4.10 0.34 23.7 00 0.19 0.02 < 0.01 0.03 0.23 < 5 1.0 7.35 2.33 4.34 0.35 23.6 01 0.20 0.02 < 0.01 0.02 0.24 13 0.9 8.33 2.39 4.76 0.37 23.8 02 0.24 0.04 < 0.01 0.02 0.27 < 5 1.0 7.75 2.27 4.59 0.37 24.3 03 0.23 0.03 < 0.01 0.05 0.28 6 0.9 8.00 2.43 4.59 0.36 23.5 04 0.21 0.03 < 0.01 0.03 0.24 10 0.7 7.59 2.35 4.36 0.35 23.3 05 0.24 0.02 < 0.01 0.06 0.30 9 1.3 7.66 2.22 4.24 0.34 23.1 06 0.10 0.03 < 0.01 0.03 0.14 17 1.0 6.54 1.84 .3.46 0.30 22.6 07 0.15 0.02 < 0.01 0.05 0.21 7 1.0 8.26 2.37 4.85 0.38 24.1 08 0.21 0.02 < 0.01 0.06 0.28 6 1.0 8.42 2.37 4.88 0.38 24.1 09 0.20 0.02 < 0.01 0.05 0.26 11 0.9 8.17 2.31 4.57 0.36 23.5 10 0.13 < 0.02 < 0.01 0.02 0.16 12 1.2 7.23 2.06 3.91 0.33 22.7 11 0.14 0.02 < 0.01 0.03 0.19 7 1.3 6.77 1.96 3.52 0.30 21.7 12 0.18 0.03 < 0.01 0.02 0.21 1.3 8.02 2.12 4.57 0.37 23.9 13 0.19 0.02 < 0.01 0.02 0.20 0.9 8.26 2.16 4.38 0.35 23.1 14 0.13 0.03 < 0.01 0.03 0.15 1.0 8.78. 2.37 5.05 0.39 24.4 15 0.15 0.02 < 0.01 0.04 0.19 9.15 2:46 5.18 0.39 24.1 16 0.17 < 0.02 < 0.01 0.04 0.21 7.98 2.08 4.44 0.36 23.8 17 0.15 0.02 < 0.01 0.04 0.18 7.13 1.88 3.64 0.31 22.3 Maximum 0.29 0.07 0.01 0.15 0.37 17 1.3 1 11.73 4.74 6.26 0.40 24.4 Minimum 0.10 0.02 < 0.01 0.02 0.14 3 0.7 < 1 6.54 1.84 3.46 0.28 19.5 Average 0.20 0.03 0.01 0.04 0.25 7 1.1 1 8.45 2.48 4.52 0.35 22.5 #Tests 36 36 - 35 35 36 30 33 17 34 34 34 34 34 Site: SW-06- SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Carson River,Stateline ALPINE COUNTY SURF_ACEWATER QUALITY DATA From: 1981 To: 2017 Coliforms Fecal/ Fecal <--------------------------Blue Green Algae-------------------------------> Single Hard- Total E.coli Strep <------Colonies------> <-----Filaments------> <---Filamaments---> Cells D.O. -SO4 ness Year MPN MPN MPN # cells # cells # um #cells mg/L mg/L mg/L 81 1,843 1,191 488 50 403 42 312 2 63 6 82 83 4,216 1,060 843 0 0 20 310 0 0 0 9.67 0.69 26 84 4,137 1,724 306 53 9 14 8 783 312 13 8.81 1.85 32 85 879 754 83 0 0 7 1 27 2 0 9.34 2.09 36 86 2,082 522 318 0 0 2 98 139 5 4,178 9.54 9.08 30 87 1,009 639 251 0 0 46 577 115 4 1,339 9.37 6.64 35 88 666 288 176 0 0 0 0 369 13 554 10.78 6.01 .89 669 465 286 0 0 0 0 392 167 11,149 10.60 5.34 90 1,074 178 318 0 0 0 0 0 0 222 8.43 5.71 46 91 774 181 65 0 0 0 0 0 0 0 8.75 5.60 41 92 516 101 60 0 0 0 0 0 0 0 9.26 5.60 30 93 2,450 1,088 60 0 0 0 0 0 0 0 9.93 4.49 27 94 3,094 315 540 0 0 0 0 0 0 0 9.43 5.65 34 95 580 59 50 0 0 0 0 0 0 0 9.65 4.84 25 96 799 205 55 0 0 0 0 0 0 0 8.80 3.19 28 97 323 88 230 0 0 0 0 0 0 0 9.65 3.16 29 98 333 63 130 0 0 13 72 0 0 0 8.65 2.60 25 99 1,799 109 130 0 0 0 0 0 0 0 9.28 2.74 00 1,503 119 60 0 0 0 0 0 0 0 9.33 3.05 01 681 137 130 0 0 0 0 0 0 0 9.47 2.68 02 500 135 58 0 0 0 0 0 0 0 8.85 2.66 03 275 72 68 0 0 0 0 0 0 0 8.58 2.69 04 794 81 42 0 0 0 0 0 0 0 8.76 2.74 05 167 53 26 0 0 0 0 0 0 0 9.14 2.63 06 832 87 29 0 0 0 0 0 0 0 9.58- 1.67 07 485 210 43 0 0 0 0 0 0 0 8.70 2.62 08 267 142 230 0 0 0 0 0 0 0 9.13 3.33 09 446 61 26 0 0 0 0 0 0 0 9.30 2.68 10 1,305 181 77 0 0 0 .0 0 0 0 8.86 2.30 11 2,718 1,676 77 0 0 0 0 0 0 0 9.66 1.54 '12 737 107 12 0 0 0 0 0 0 0 8.49 2.21 13 2,39.1 193 14 0 0 0 0 0 0 0 8.97 2.29 14 1,633 206 13 0 0 0 0 0 0 0 9.23 2.84 15 1,867 61 10.59 3.01 16 1,278 63 11.34 2.61 17 437 52 10.57 1.62 Maximum 4,216 1,724 843. 53 403 46 577 783 312 11,149 11.34 9.08 46 Minimum 167 52 12 0 0 0 0 0 0 0 8.43 0.69 25 Average 1,266 352 160 3 12 4 42 55 17 529 9.39 3.44 32 #Tests 36 36 33 33 33 33 33 33 33 33 35 35 14 - Site: S-W=0.6 Nitrate-Nitrogen Total Phosphorus 0.5 0.5 0.4 0.4 0.3 0.3 E E 0.2 0.2 0.1 0.1 0.0 �� %Ib �� _.Ik �� �^ 4P co OA OP o^ 03 O� OA O� �� Nb NA 0.0 �� 93 1;0 -.Ik q§b C�, 91b qIb O'k qIb 4s, 03 OP OA Ob 0 NO) N1 --�—Nitrate Linear(Nitrate) ---♦—Total Phosphorus Linear(Total Phosphorus) Chlorides Total Dissolved Solids 10 T 250 9 8 200 7 g 150 E 5 E 4 100 3 2 50 1 0 0 3 h 3 h 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 0 O O O 4 O 0 O O O O O O O O '� '� '� N.A. —+—Chlorides Linear(Chlorides) —♦—TDS Linear(TDS) Site: SW-07 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Fredricksburg Ditch,-Upper ALPINE COUNTY SURFACEWATER QUALITY DATA 2017 Temp Alkalinity Turbidity SS TDS EC Chloride Total P PO4-P Boron K Date . C pH mg/L NTU mg/L . mg/L umhos mg/L mg/L mg/L mg/L mg/L 03/01/17 Dry 04/04/17 Dry 05/03/17 Dry 06/07/17 7.7 .7.66 53.9 2.50 2.74 91 122 2.2 0.108 0.049 4.04 07/12/17 Dry 08/01/17 15.1 7.16 76.5 2.60 1.60 142 177 7:0 0.155 -0.062 5.45 09/07/17 20.6 6.74 64.4 2.40 3.27 126 160 7.1 0.124 0.053 6.28 10/11/17 Dry 11/01/17 Dry Maximum 20.6 7.66. 76.5 2.60 3.27 142 177 7.1 0.155 0.062 6.28 Minimum 7.7 6.74 53.9 2.40 1.60 91 122 2.2 0.108 0.049 4.04 Average 14.5 7.19 64.9 2.50 2.54 120 153 5.4 0.129 0.055 5.26 #Tests 3 3 3 3 3 3 3 3 3 3 0 3 Site: SW-07 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: ALPINE COUNTY SURFACEWATER QUALITY DATA 2017 0.920 0:040. < 0.010 0.140 1.060 17.9 4.49 12.8 0.700 28.40 Date 0.511 0.024 < 0.010 0.023 0.534 12.4 2.94 5.6 0.370 20.10 03/01/17 0.653 0.032 < 0.010 0.069 0.721 15.0 3.66 9.3 0.553 24.90 04/04/17 05/03/17 3 3 3 3 3 0 .0 0 3 3 3 3 3 06/07/17 07/12/17 08/01/17 09/07/17 10/11/17 11/01/17 Maximum Minimum Average #Tests Site: SW-07 SOUTH-TAHOE PUBLIC UTILITY DISTRICT Stream: Fredricksburg Ditch,Upper ALPINE COUNTY SURFACEWATER QUALITY DATA 2017 Coliforms Fecal <--------------------------Blue Green Algae--------------- -> Single Hard- Total E.-coli Strep <------Colonies------>- <-----Filaments------> <---Filamaments---> Cells D.O. SO4 ness Date MPN MPN MPN # cells # cells # um #.cells mg/L mg/L mg/L 03/01/17 04/04/17 05/03/17 06/07/17 5,475 272 9.83 1.57 07/12/17 08/01/17 11,780 504 7.21 2.42 09/07/17 61867 135 10.20 1.94 10/11/17 11/01/17 Maximum 11,780 504 0 0 0 0 0 0 0 10.20 2.42 Minimum 5,475 135 0 0 0 0 0 0 0 7.21 1.57 Average 8,041 304 9.08 1.98 #Tests 3 3 0 0 0 0 0 0 0 0 3 3 0 Site: SW-07. -SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Fredricksburg Ditch,Upper = ALPINE COUNTY SURFACEWATER QUALITY DATA From 1981 To: 2017 . Temp Alkalinity Turbidity SS -TDS EC Chloride Total P PO4-P Boron K . Year C pH mg/L NTU mg/L mg/L - umhos mg/L mg/L mg/L mg/L mg/L 81 -13.1 7.50 69 1.60 - 1 175 250 0.05 0.03 3.20 82 11.8 7.54 73 6.78 26 139 182 .24.5. 0.13 0.09 4.90 -83 18.0 7.63 68 2.35 5 128 165 - 10.2 0.07 0.05 4.44 84 15.0 7.63 59 4.30 11 95 155 9.7 0.11 0.05 3.33 85 16.0 7.51 60 2.60 5 113 174 11.6 0.09 -0.03 3.70 86 12.5 7.79 70 5.07 4 125 171 8.4 0.09 0.02 4.10 87 16.3 7.61 86 5.75 19 176 267 20.8 0.20 < 0.01 6.75. 88 .13.1 7.31 70 4.32 8 158 232 19.9 0.07 0.02 5.32 89- 17.6 7.39 72 12.08 26:0 166 257 27.9 0.21 0.03 5.22 90 9.6 7.46 68 3.13 6.0 158 292 34.5 0.06 0.02 0.03 3.42 91 14.3 7.22 69 2.96 12.6 198 262 42.2 0.17 0.06 0.04 4.48 92. 11.9 7.40 82 2.63 6.0 244 344 48.1 0.25 0.15 0.05 7.73 93 14.0 7.12 72 4.20 7.4 166 243 26.3 0.21 0.13 0.03 5.32 94 10.8 7.87 80 2.30 19.0 240 313 33.4 0.12 0.03 0.02 3.63 95 18.3 6.90 63 3.37 4.7 122 147 5.9 0.17. 0.10 0.03 4.70 96 .21.2 7.03 76 5.20 5.5. 140 199 .11.6 0.19 0.10 0.03 4.80 97 19.6 7.44 64 7.00 54.0 129 155 7.2 0.24 0.08, 0.04 3.70 98 17A 7.04 60 3.40 6.4 114 '144 5.9. 0.13 0.07 0.03 3.55 99 20.0 7.15 87 2.50 3.8 159 208 7.6 0.12 0.08 0.03 4.51 00 15.7 7.11 64 24.23 40.5 143 193 14.3 0.46 0.21 0.07 6.83 01 16.6 7.21 72 7.48 5.2 146 223 18.1 0.24 0.22 0.04 5.30 02 14.9 7.43 82 5.52 4.0 148 212 14.9 0.14 0.05 0.04 4.60 03 14.5 7.54 67 7.69 11.7 143 194 14.4 0.23 0.13 0.05 4.33 04 14.0 7.41 4.8 12.75 26.0 133 183 13.6 0.08 0.06 0.03 5.03 05 14.7 6.87 65 7.28 8.7 140 184 17.4 0.31 0.22 0.05 4.62 06 16.3 7.18 68 4.45- 5.3 115 131 5.9 0.15 0.05 -0.04 3.04 07 15.3 7.53 77 4.92 8.6 149 212 16.1 0.14 0.07 0.04 4.80 08 7.9 7.51 50 43.00 71.3 114 140 7.3 0.40 0.14 0.02 8.66 09 14.1 7.68 89 20:73 32.5 167 229 15.6 0.16 0.02 0.03 5.82 10 11.8 1.38 75 82.48 75.3 147 211 14.9 0.37 0.03 0.03 5.54 11 12A 7.52 62 49.62 85.3 114 148 _ 6.8 0.44 0.06 0.03 5.81 12 20.6 7.11 70 9.50 13.7 153 257 16.5 0.27 0.14 0.04 5.56 13 14.6 7.12 74 7.50 5.9 148 197 12.4 0.22 0.04 0.03 4.75 14 8.8 7.13 81 5.13 5.6 170 247 19.2 0.13 0.04 0.04 6.13 15-. 13.7 7.24 106 2.80 3.1 170 274 23.5 0.09 0.05 0.05 3.93 16 Dry 17 14.5 7.19 65 2.50 2.5 120 153 5.4 0.13 0.05 5.26 Maximum 21.2 7.87 106 82.48 85.3 244 344 48.1 0.46 0.22 0.09 8.66 Minimum 7.9 6.87 48 1.60 1.0 95 131 5.4 0.05 0.02 < 0.01 3.04 Average 14.7 7.35. 71 10.53 17.7 149 210 16.9'' 0.18 0.09 0.04 4.91 #Tests 36 36 36 36 36 36 36 35 36 27 35 36 Site: SW-07 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Fredricksburg Ditch,Upper ALPINE COUNTY SURFACEWATER QUALITY DATA . From: 1981 To: 2017 Oil& TKN NH3-N NO2-N -NO3-N .Total N COD BOD Grease Ca Mg Na SAR Na Year -mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L % 81 0.39 0.05 0.61 7 1 < 1 82 0.80 0.03 1.03 28 1 < 1. 83 0.69- -0.09 < 0.01 0.09 0.80 23 2 < 1 84 0.44 0.09: 0.01 0.24 0.69 12 1 < 1 15.33 3.20, 8.93 0.52 24.2 85 0.59 0.10. 0.01 0.04 0.64 17 1 < 1 14.47 3.48 10.73 0.62 26.9 86 0.51 0.07 0.01 0:16 0.68 17 1 < 1 15.67 3.89 9.33 0.57 25.4 87 1.32 0.20 < 0.01 0.22 1.55 36 5 < 1 24.00 5.85 17.50 0.85 28.2 88 0.78 0.08 0.01 0.12 0.91 15 2 1 22.50 6.03 12.50 0.60 23.6 89 0.94 0.08 < 0.01 0.14 1.09 .16 2.0 < 1 23.40 6.05 15.80 .0.72 26.3 90 0.24 0.03 < 0.01 0.31 0.56 6 1.2 < 1 26.00' 6.78 14.36 0.64 24.5 91 0.64 0.09 0.04 0:63 1.31 21 2.2 < 1 27.60 6.82 19.64 0.85 28.3 92 1.26 0.03 0.02 0.28 1.56 3 3.3 < 1 28.67 7.40 26.67 1.17 33.7, 93 0.84 0.03 0.02 0.44 1.30. 18 1.8 2 -23.00 5.78 16.76 0.80 29.0 94 0.95 0.03 0.01 0.44 1.39 10 4.0 < 1 23.00 5.67 13.10 0.64 26.5 95 1.00 0.04 0.01 0.06 1.06 2.0 1 16.67 4.00 7.80 0.44 20.9 96 1.01 0.04 0.02 0.27 1.29 2.0 1 18.00 4.20 12.50 0.69 28.3 97 1.16 0.05 0.01 0.07 1.24 34 4.5 1 16.00 4.15 10.25 0.59 26.5 98 0.73 0.03 0.01 0.13 0.87 1:7 < 1 12.50- 3.24 10.70 0.70 32.2 99 0.67 0.03 < 0.01 0.41 1.10 1.1 19.95- 4.23 14.30 0.79 30.7 00 1.65 0.32 0.05 0.63 2.33- 3.4 13.36 4.66 17.17 1.03 37.3 01 1.43 0.04 0.09 0.78 2.30 1.0 16.30 4.23 19.75 1.13 39.1 02 0.63 -0.04 < 0.01 0.34 0.97 1.1 19.17 4.95 17.50 0.92 33.7 03 0.84 0.18 0.04 0.52 1.40 27 2.1 15.36 4.23 13.17 0.79 32.4 04 0.77 0.19 0.01 0.38 1.15 25 2.0 10.49 3.45 9.01 0.62 29.5 05 -1.11 0.44 0.07 0.50 1.68 34 2.6 13.55 3.74 15.52 0.94 34.7 06 0.75 0.13 0.01 0.14 0.90 1.5 15.05 3.50 .9.01 0.54 26.1 07 0.55 0.25 0.03 0.93 1.51 24 1.7 16.48 4.72 19.37 1.08 37.5 08 1.32 0.08 0.01 0.10 1.43 8.9 11.70 4.18 10.70 0.68 28.8 09 0.83 0.03 < -0.01 0.23 1.07 2.6 19.47 5.90 17.73 0.90 32.3 10 0.72 0.03 < 0.01 0.63 1.36 1.9 16.90 6.13 14.69 0.78 29.4 11 1.23 0.07 0.02 0.17 1.42 21 2.7 12.63 4.71 10.73 0.66 29.1 12 3.25 2.10 .0.02 1.07 4.34 5.0 16.87 4.87 19.77 1.10 38.4 13 1.05 0.05 0.02 0.47 1.52 2.9 16.70 4.29 15.28 0.86 33.4 14 0.60 0.05 < 0.01 0.97 1.57 1.7 19.07 5.18 20.87 1.09 36.9 15 0.40 0.02 < 0.02 1.28 1.68 20.85 5.46 23.75 1.20 39.4 16 17 0.65 0.03 < 0.01 0.07 0.72 14.97 3.66 9.34 0.55 24.9 Maximum 3.25 2.10 0.09 1.28 4.34 36 8.9 2 28.67 7.40 26.67 1.20 39.4 Minimum 0.24 0.02 < 0.01 0.04 0.56 3 1.0 < 1 10.49 3.20 7.80 0.44 20.9 Average 0.91 .0.15 0.02 0.39 1.31 20 2.4 1 18.05 4.81, 14.69 0.79 30.2 #Tests 36 36 34 34 36 20 34 18 33 33 33 33 33 Site: SW-07 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream:- Fredricksburg Ditch,Upper ALPINE COUNTY SURFACEWATER QUALITY DATA From: 1981 To: 2017 Coliforms Fecal/ Fecal <--------------------------Blue Green Algae-------------------------------> Single Hard-. Total E.coli Strep <------Colonies-------> <-----Filaments------> <---Filamaments---> Cells D.O. SO4 ness Year MPN MPN MPN # cells # cells # um #cells m /L m /L mg/L 81 1,120 763 216 56 193 13 90 3 46 10 82 5,380 1,608 3,306 126 930 104 1,122 4 84 92 83 6,700 5,965 2,515 5 10 65 780 35 920 20 7.75 2.16 61 84 1,500 958 .1.,355 2 1 5 2 142 7 72 8.63 12.43 53 85 9,110 1,343 843 0 0 0 0 277 2 0 7.70 3.31 50 86 17,533 3,133 710 0 0 0 0 0 0 369 7.63 < 10.00 60 87 > 24,000 17,500 5,545 0 0 0. 0 0 0 277 7.05 13.43 86 88 7,966 3,872 998 0 0 0 0 0 0; 277 10.81 13.23 -89 10,688 9,065 8,498 0 0 0 0 0 0 1,708 .8.93 15.53 90 1,646 510 183 0 0 0 0. 0 0 . 0 8.80 17.88 78 .91 12,366 .7,696 430 0 0 21 648 0 0 0 -7.47 18.75 48 92 11,810 9,677 90 0 0- 0 0 .0 0 0 7.90 25.01 122 93 13,640 6,136 230 0 0 0 0 0 0 0 7.64 13.46 64 94 4,053 630 260 0 0 0 0 0 0 0 10.90 17.63 99 95 12,167 9,677 0 0 0 0 0 0 0 6.72 6.97 96 24,000 17,500 0- 0 0 0 0 0 0 7.95 8.27 97 17,500 5,515 4,600 0 0 0 0 0 0 0 8.08 7.31 53 98 4,600 2,400 0 0 0 0 0 0 0 9.00 4.00 99 7,800 3,050 0 0 0 0 0 0 0 5.35 5.96 00 11,067 10,333 0 0 0 0 0 0 0 7.40 8.25 01 5,620 5,620 0 0 0 0 0 0 0 8.85 7.14 02 1,187 540 0 0 0 0 0 0 0 8.69 7.04 03 4,875 2,783 240 0 0 9 528 0 0 0 7.33 5.08 04 7,800 5,620 240 0 0 0 0 0 0 0 7.58 7.13 05 2,538 2,040 230 0 0 0 0 0 0 0 7.90 5.42 06 965 680 0 0 0 0 0 0 0 8.57 2.12 07 3,578 790 93 0 0 0 0 0 0 0 7.94 6.32 08 2,400 2,400 0 0 0 0 0 0 0 7.08 4.93 09 7,643 3,820 0 0 0 0 0 0 0 9:86 7.30 10 4,325 3,958 0 0 7 83 0 0 0 7.68 6.87 11 5,666 5,524 43 0 0 0 0 0 0 0 8.45 2.32 12 11,000 7,643 0 0 9 297 0 0 0 7.43 24.37 13 4,733 3,690 90 0 0 0 0 0 0 0 7.90 8.43 14 7,477 4,443 0 0 0 0 0 0 0 7.23 9.46 15 2,755 317 7.81 10.55 16 17 8,041 304 9.08 1.98 Maximum > 24,000 17,500 8,498 126 930 104 1,122 277 920 1,708 10.90 25.01 122 Minimum -965 304 43 0 0 0 0 0 0 0 5.35 1.98 48 Average 7,924 4,653 1,463 6 33 7 104 - 14 31 83 8.09 9.41 70 #Tests 36 36 21 34 34 34 34 34 34 34 34 34 11 Sites. SW=07 -Nitrate-Nitrogen Total Phosphorus 1.0 1.0 0.9 0.9 0.8 0.8 IT I 0.7 0.7 0.6 0.6 J J rn 0.5 m .0.5 E E 0.4 0.4 0.3 0.3 0.2 0.2 __V V 14 0.1 0.1 0.0 0.0 41 40 0� 04 0y 4 00 O� 04 4`' 4A 40 1�1 '�� Nh NA 4� 4� 4� 4" 40 0� 04 04 0� 00 4� 44 O' 4A 40 NN Nb 43 NA —�—Nitrate Linear(Nitrate) —♦—Total Phosphorus Linear(Total Phosphorus) Chlorides Total Dissolved Solids 100 T 500 90 80 400 70 60 300 J J - c, 50 a, E E AA 40 200 30 20 100 10 0 0 4^ 4`' 4h .,A 40 0^ 0� 0�' 0bA 00 O� o� 4� 4ZA 40 ^.� Nrb Nb 'A q;l CP 41' 101A 40 0� 0P 0o 0b" 00 4; 4p 4D 41 40 —�--Chlorides Linear(Chlorides) +--TDS Linear(TDS) Site:. SW-08 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Irrigation Ditch- ALPINE COUNTY SURFACEWATER-QUALITY.DATA. 2017 Temp Alkalinity Turbidity_ SS TDS EC Chloride Total P PO4-P. Boron - K Date C pH mg/L NTU mg/L mg/L umhos mg/L mg/L mg/L mg/L mg/L 03/01/17 7.1 6.58 43.0 3.0 1.4 112 112 2.14 0.039 0.020 2.40 04/04/17 12.6 6.75 54.6 4.4 3.5 140 130 1.38- 0.079 0.026 2.38 05/03/17 18.2 6.56 74.7 15.0 94.4 149 176 0.43 0.397 0.075 2.20 06/07/17 Dry 07/12/17 Dry 08/01/17 18.6 7.33 97.6 2.4- 4.5 185 200 - 3.74 0.132 0.057 5.17 09/07/17 19.9 6.58 84:9 2.5 9.8 151 205 4.50 0.069 0.022 4.35 10/11/17 Dry 11/01/17 Dry Maximum 19.9 7.33 97.6 15.0 94.4 185 205 4.50 0.397 0.075 5.17 Minimum 7.1 6.56 43.0 2.4 1.4 112 112 < 0.43 0.039 < 0.020 2.20 Average 15.3 6.76 71.0 5.5 22.7 147 165 2.44 0.143 0.040 3.30 #Tests 5 5 5 5 5 5 5 5 5 5 0 5 J Site: SW-08 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Irrigation Ditch- ALPINE COUNTY SUR1=ACEWATER QUALITY DATA 2017 Oil& TKN NH3-N NO2-N NO3-N Total N COD BOD Grease Ca Mg Na SAR Na Date mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L % 03/01/17 0.398 < 0.020 < 0.010 < 0.010 0.398 7.80 2.14 12.40- -1.010 46.20 04/04/17 0.919 < 0.020 < 0.010 < 0.010 0.919 9.62 2.44 14.80 1.100 -46.50 05/03/17 3.020 0.026 < 0.010 0.037 3.060 16.20 3.47 16.60 0.980 38.60 06/07/17 07/12/17 08/01/17 1.110 0.037 < 0.010 0.017 1.130 22.00 5.30 14.30 0.710 27.20 09/07/17 0.694 0.042 < 0.010 0.017 0.711 18.10 4.31 12.80 0.700 28.90 10/11/17 11/01/17 Maximum 3.020 0.042 < 0.010 0.037 3.060 22.00 5.30 16.60 1.100 46.50 Minimum 0.398 < 0.020 < 0.010 < 0.010 0.398 7.80 2.14 12.40 0.700 27.20 Average 1.228 0.029 < 0.010 0.018 1.244 14.74 3.53 14.18 0.900 37.48 #Tests 5 5 5 5 5 0 0 0 5 5 5 5 5 Site: SW-08 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Irrigation Ditch ALPINE COUNTY SURFACEWATER QUALITY DATA 2017 Coliforms - Fecal Blue Green Algae------------ Single Hard- Total -------------------> Total E:coli Strep <------Colonies------> <-----Filaments------> <---Filamaments---> -Cells - D.O. SO4 ness Date MPN MPN MPN # cells # cells # um #cells mg/L mg/L mg/L 03/01/17 1,046 19 11.30 8.39 04/04/17 3,076 1 7.98 7.90 05/03/17 1,725 < 1 3.17 2.82 06/07/17 07/12/17 08/01/17 7,590 1,187 4.69 1.49 09/07/17 27,550 225 6.67 1.82 10/11/17 11/01/17 Maximum 27,550 1,187 0 0 0 0 0 0 0 11.30 8.39 Minimum 1,046 < 1 0 0 0 0 0 0 0 3.17 1.49 Average 8,197 286 6.76 4.48 #Tests 5 5 0 0 0 0 0 0 0 0 5 5 0 Site: SW-08 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Irrigation Ditch ALPINE COUNTY SURFACEWATER QUALITY DATA From 1981 To: . 2017 Temp Alkalinity Turbidity SS TDS EC Chloride Total P PO4-P Boron K Year C pH mg/L NTU mg/L mg/L umhos mg/L- mg/L mg/L mg/L mg/L - . .81. 13.2 7.72 61 2.24 17 116 134 0.04, 0.02 2.51 82 15.3 -7.53 57 2.40 8 98 119 0.04 . 0.04 Z16 83 13.8 7.72 56 8.62 12: 96 117 1.4 0.11 0.04 2.33 84 14.2 7.56 57 4.59 18 88 114 1.1 0.12, 0.05- .2.51 85- 14.2 7.63 57 3.53 21 85 116 1.9 0.12 0.15 2.63 86 12.4 7.63 55 3.52. 18 89 111 1.3 0.13 0.02 2.50 87 13.4... 7.28 57 2A8 13 93 . 119 1.8 0.10 0.02 2.28 88' 12.7 7.63 55 3.03 19 95 117 1.3 0.07 0.01 1.98 89 13.7 7.49. 53 2.79 12.9 94 118 1.5 0.08 0.02 2.17 90 14.1 7.56 54 4.01 23.5 102 111 1.2 0.09 0.03 0.03. 2.18 91 15.0 7.28 57 2.19 8.3 98 122 1.3 0.05 0.02 0.02 2.21 92 14.5 7.53 54 2.44 12.7 96 122 1.3 0.07 0.02 0.02 2.19 93 13.2 7.59 55 2.78 13.7 99 124 1.6 0.07 0.02 0.02 2.36 94 13.3 7.40 49 2.87 11.3 96 127- 1.6 0.08 0.02 0.02 2.40 95 13.7 7.42. 60 1.80 9.1 104 129 1.7 0.07 0.02 0.02 2.08 96 14.5 7.62 55 4.89 22.7 96 118 1.5 0.10 0.03 0.02 2.14 97 13.6 7.66 52 4.25 20.4 97 109 1.8 0.10 0.04 0.02 2.63 98 13.7 7.23 52 3.42 27.2 91 109 1.8 0.09 0.02 0.01 2.38 99 15.6 7.31 49 3.08 17.8 90 111 1.6 0.07 .0.02 0.01 2.30 00 13.9 7.13 49 3.37 33.6 91 109 1.6 0.09 0.02 0.02 2.16 01 15.8 7.45 55 5.24 15.4 98 122 1.9 0.16 0.03 0.02 2.42 02 16.0 7.32 60 3.70 20.2 100 127 1.6 0.06 0.02 0.02 2.24 03 13.1 7.46 57 6.40 19.0 97 114 1.6 0.06 0.02 0.02 2.30 04 17.2 7.52 58 15.68 40.1 98 122 1.8 0.13 0.02 0.03 2.70 05 14.1 7.13 54 4.31 10.1 101 105 1.5 0.05 0.03 0.02 2.05 06 .16.7 6.97 58 2.55 4.7 -103 112 1:5 0.09 0.03 0.02 2.21 07 13.8 7.43 57 6.78 18.0 102 125 1.7 0.07 0.02 0.02 3.05 08 16.2 7.56 55 11.24 28.3 100 113 1.8 0.10 0.02 0.01 2.60 09 14.3 7.39 53 13.06 45.5 100 115 1.5 0.10 0.02 0.01 2.53 10 12.7 7.15 46 4.98 14.1 94 104 1.6 0.07 0.02 0.01 2.62 11 15.4 7.45 52 7.60 14.7 101 108 1.5 0.09 0.02 0.01 2.94 12 16.2 6.93 60 7.77 16.1 101 125 1.5 0.07 0.01 0.02. 2.43 13 14.6 7.11 64 5.43' 18.7 114 133 1.7 0.09 0.02 0.02 3.06 14 11.4 7.03 58 9.56 29.4 109 .131 1.9 0.23 0.02 0.02 3.75 15 -13.6- 6.84 57 26.90 92.3 126 143 2.4 0.47 0.03 0.01 3.71 16 13.4 6.58 68 2.26 7.4 136 146 1.6 0.12 0.05 3.58 17 15.3 6.76 71 5.46 22.7 147 165 2.4 0.14 0.04 3.30 Maximum 17.2 7.72 71 26.90 92.3 147 165 2.4 0.47 0.05 0.15 3.75 Minimum 11.4 6.58 46 1.80 4.7 85 104 1.1 0.04 0.01 0.01 1.98 Average 14.3. 7.35 56 5.47 20.4 101 121 1.6 0.10 0.02 0.02 2.53 #Tests 37 37 37 37 37 37 37 35 37 28 35 37 Site: SW-08 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Irrigation Ditch ALPINE COUNTY SURFACEWATER QUALITY DATA From: 1981 To: 2017 Oil& TKN NH3-N NO2-N NO3-N Total N COD BOD Grease Ca Mg Na .SAR Na Year mg/L. mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L % 81 0.37 0.03 0.50 13 1 < 1 82 0.47 0.02 0.70 17 1 < 1 '83 0.38 0.06 0.01 0.10 0.49 13 1 < 1 84 0.39 '0.07 < 0.01 0.15 0.55 10 1 < 1 10.55 2.66 8.28 0.59 30.6 85 0.38 0.06 < 0.01 0.11 0.49 13 1 < 1 11.03 2.64 8.51 0.60 30.6 86 0.38 0.05 < 0.01 0.19 0.57 14 1 2 10.49 3.05 6.59 0.46 25.4 87 0.32 0.03 < 0.01 0.14 -0.48 10 1- < 1 11.23 2.71 8.28 0.66 29.9 88 0.40 0.04 < 0.01 0.16 0.58 8 1 < 1 11.55 2.81 8.77 0.60 30.7 89 0.45 0.06 < -0.01 .0.12 0.58 12 1.5- < 1 10.73 2.58 8.02 0.56 30.0 90 0.44 0.03 < 0.01 0.16 0.61 16' 1.4 < 1 11.53 2.66 8.88 0.60 h 31.1 91 0.36 0.04 0.01 0.16 0.54 18 1.1 1 11.70 2.82- 7.68 0.52 27.6 92 0.46 0.03 0.01 0.13 0.60 14 1.3 < 1 11.46 -2.58 8.45 0.58 30.2 93 0.42 0.03 0.01 0.32 0.75 14 1.2 < 1 12.12 2.83 8.80 0.59 29.5 94 0.50 0.03 0.01 0.35 0.86 6 1.3 < 1. 13.42 3.13 9.35 0.59 29.7 95 0.48 0.02 0.01 0.34 0.84 7 1.5 1 12.40 2.77 9.72 0.65 31.9 96 0.44 0.03. 0.01 0.33 .0.78 .5 1.4 1 10.98 2.59 8.99 0.63 32.3 97 0.40 0.03 0.01 0.40 0.81 12 1.8, 1 11.18 2.73 8.50 0.58 30.3 98 0.42 0.02 < 0.01 0.26 0.69 -6 1.1 < 1 10.28 2.46 8.62 0.62 32.3 99 0.44 0.02 < 0.01 0.27 0.72 9 1.0 9.79 2.48 8.99 0.66 33.5 00 0.46 0.03 < 0.01 0.20 0.66 17 1.1 9.06 2.57 8.12 0.61 32.4 01 0.40 0.03 < 0.01 0.16 0.56 14 0.7 10.38 2.81 9.42 0.68 33.8 02 0.39 0.05 < 0.01 0.12 0.52. 10 0.9 11.66 2.73 9.96 0.68 33.5 03 0.47 0.03 < 0.02 0.13 0.62 15 0.8 12.29 3.09 10.71 0.70 33.6 04 0.79 0.04 < 0.01 0.17 0.97 19 1.9 11.05 2.87 8.96 0.62 31.2 05 0.45 0.03 < 0.01 0.09 0.55 9 1.3 10.59 2.59 9.18 0.65 33.3 06 0.36 0.04 < -0.01 0.03 0.40 12 1.6 11.36 2.60 9.80 0.69 33.9 07 0.46 0.03 < 0.01 0.06 0.53 22 1.2 11.57 2.79 10.01 0.69 33.0 08 0.70 0.02 < 0.01 0.02 0.72 22 1.7 1-0.91 2.72 9.50 0.66 32.7 09 0.90 0.03 < 0.01 0.05 0.96 28 1.5 10.73 2.67 9.75 0.69 33.8 10 0.61 0.04 < 0.01 0.04 0.66 35 1.6 9.29 2.43 8.59 0.64 32.8 11 0.68 0.02 0.01 0.03 0.72 19 2.0 9.72 2.65 8.94 0.66 32.2 12 0.56 0.03 < 0.01 0.03 0.59 1.5 11.41 2.75 9.94 0.69 33.6 13 0.59 0.03 < 0.01 0.01 0.59 1.2 12.75 2.94 10.78 0.72 33.8 14 0.90 0.04 0.02 0.01 0.91- 2.2 11.93 2.87 10.50 0.73 34.0 15 1.38 0.08 < 0.01 0.02 1.39 12.74 3.14 12.00 0.82 36.1 16 0.87 0.02 < 0.01 0.02 0.88 13.62 3.25 12.45 0.81 35.3 17 1.23 0.03 < 0.01 0.02 1.24 14.74 3.53 14.18 0.90 37.5 Maximum 1.38 0.08 0:02 0.'40 1.39 35 2.2 2 14.74 3.53 14.18 0:90 37.5 Minimum 0.32 0.02 < 0.01 0.01 0.40 5 0.7 < 1 9.06 2.43 6.59 0.46 25.4 Average 0.54 0.04 0.01 0.14 0.69 .14- 1.3 1 11.36 2.78 9.39 0.65 32.1 #Tests 37 37 35 35 37 31 34 18 34 34 34 -34 34 Site: SW-08 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Irrigation Ditch ALPINE COUNTY SURFACEWATER QUALITY DATA From: 1981 To: 2017 Coliforms Fecal/ Fecal <--------------------------Blue Green Algae--------------------------------> Single Hard- Total E.coli Strep <------Colonies------> <-----Filaments------> -<---Filamaments---> Cells D.O. SO4 ness Year MPN MPN MPN # cells # cells. # um #cells mg/L mg/L mg/L 81. -2,064 752 392 18 75 61 424. 4 160 15 82 6,870. 1,963 .381 -36 .95 67 438 8 -205 45 _ - 83 1,785 672 132 10 20 37 385 30 1,852 20 8.02 2.50 46 84 3,100 893 409 74 2 5 21 517 718 7 7.70- 1.52 40 85 2,463 471 207 0 0 0 0 185 5 0 7.53- 1.01 40 86 1,830 407 546 0 0 0 0 115 3 646 7.64 9.25 38 87 891 669 213 0 0 23 508 69 3 4,778 7.90 6.12 40 88 3,368 496 300 0 0 0 0 25 0 201 8.94 5.01 89 5,282 2,973 4,245 0 0 0 0 69 3- 324 7.42 5.79 90 3,842 1,739 4,354 0 0 0 0 .0 0 0 6.90 6.53 41 91 3,651 203 130 0 0 0 0 0 0 0 7.16 6.70 41 92 6,618 844 220 0 0 0 0 0 0 0 -7.62 7.07 44 93 2,638 114 80 0 0 0 0 0 0 0 8.10 6.95 37. 94 2,548 309 580 0 0 6 8 0 0 0 7.49 7.01 39 95 2,694. 651 1,315 0 0 0 0 0 0 0 8.03 6.13 43 96 3,420 2,091 994 0 0 0 0 0 0 0 7.55 2.86 7 97 3,222 1,518 330 0 0 0 0 0 0 0 8.03 3.86 38 98 2,963 1,336 390 0 0 0 0 0 0 0 8.08 3.87 40 99 4,543 2,312 160 0 0 0 0 0 0 0. 7.49 4.41 00 5,586 2,661 160 0 0 0 0 0 0 0 8.69 4.55 01 5,100 3,388 580 0 0 0 0 0 0 0 7.53 4.87 02 3,269 1,263 152 0 0 8 59 0 0 0 6.44 4.48 03 2,217 577 235 0 0 0 0 0 0 0 7.32 4.29 04 29809 374 92 0 0 4 70 0 0 0 6.35 5.06 05 4,024 1,152 230 0- 0 0 0 0 0 0 6.63 4.94 06 1,469 595 43 -0 0 0 0 0 0 0 6.37 3.26 07 1,632 161 227 0 0 0 0 0 .0 0 6.84 5.59 08 3,643 3,020 255 0 0 0 0 0 0 0 6.32 4.62 09 5,688 3,828 772 0 0 0 0 0 0 0 6.33 5.64 10, 5,976 5,544 1,500 0 0 0 0 0 0 0 6.55 5.39 11 6,224 2,917 93 0 0 0 0 0 0 0 6.32 3.42 12 2,255 592 54 0 0 0 0 0 0 0 5.88 3.33 13 3,154 1,910 20 0 0 0 0 0 0 0 5.33 3.96 14 4,463- 3,090 277 0 0 0 0 0 0 0 6.28 5.03 15 5,301 407 5.53 8.48 16 31,343 9,684 6.86 3.68 17 8,197 286 6.76 4.48 Maximum 31,343 9,684 4,354 74 95 67 508 517 1,852 4,778 8.94 9.25 46 Minimum 891 114 20 0 0 0 0 0 0 0 5.33 1.01 7 Average 4,490 1,672 590 4 6 6 56 30 87 178 7.14 4.90 38 #Tests 37 37 34 34 34 34 34. 34 34 34 35 35 14 Site. SW=08 , Nitrate-Nitrogen Total Phosphorus 0.5 0.5 0.4 0.4 0.3 0.3 J J 0.2 0.2 0.1 0.1 0.0 0.0 �^ oo 0'` 03 0°' 0� Oo O� oo Oh o\ 0O �^ N N N �'�. o0 oh o1 0O 0'`. o0 0`' 0'� Oo lz` o0 oh oA 00 N No N N Nitrate Linear(Nitrate) Total Phosphorus Linear(Total Phosphorus) Chlorides Total Dissolved Solids 10 250 9 8 200 7 6 150 J --� a� 5 . E E 4 100 3 2 50 1 0 IF 0 . . . . . . . . . . . . . . . . . . . . . . 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 l� O� 00 IbA 4�' C`, A`b O`° 0� Ob O� O"' oy OA (ZP '�^ '� I1O NA ---*--Chlorides Linear(Chlorides) —+—TDS Linear(TDS) IRRIGATION DITCHES Site: SW-12 -SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Bruns Diversion ALPINE COUNTY SURFACEWATER QUALITY DATA 25"above Fredericksburg Ditch 2017 Temp Alkalinity . Turbidity SS TDS EC Chloride Total P PO4-P Boron K Date C pH mg/L NTU mg/L mg/L umhos mg/L mg/L mg/L mg/L mg/L 05/03/17 .17.8 8.52 175 354 -37.4 1.53 1.42 06/07/17 14.8 8.14 183 383 39.1 1.51 1.44 07/12/17 12.5 7.28 44 56.8 2.0 0.17 0.08 08/01/17 21.5 8.05 224 398 47.5 2.17 1.91 09/07/17 20.3 7.85 237 430 51.7 2.33 2.06 Maximum 21.5 8.52 237 430 51.7 2.33 2.06 Minimum 12.5 7.28 44 56.8 2.0 0.17 0.08 Average 17.4 7.97 173 324 35.5 1.54 1.38 #Tests 5 5 0 0 0 5 5 5 5 5 0 0 Site: SW-12 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Bruns Diversion ALPINE COUNTY SURFACEWATER QUALITY.DATA 25 above Fredericksburg Ditch 2017 Oil& TKN NH3-N NO2-N NO3-N Total COD BOD Grease Ca Mg Na SAR Na Date mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L . mg/L mg/L % 05/03/17 10.60 9.34 0.30 1.68 12.60 06/07/17. 9.30 8.21 0.47. 2.34 12.10 07/12/17 0.18 0.08 0.03 0.31 0.51 08/01/17 29.60 6.51 1.05 3.70 34.30 09/07/17 4.57 2.97 3.08 6.47 14.10 Maximum 29.60 9.34- 3.08 6.47 34.30 Minimum 0.18 0.08 0.03 0.31 0.51 Average 10.85 5.42 0.98 2.90 14.72 #Tests 5 -5 5 5 5 0 0 0 0 0 0 0 0 Site: SW-12 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Bruns Diversion ALPINE COUNTY SURFACEWATER QUALITY DATA 25"above Fredericksburg Ditch 2017 Coliforms Fecal <--------------------------Blue Green Algae-------------------------------> Single Hard- Total E. coli Strep <------Colonies------> <-----Filaments------> <---Filamaments---> Cells D.O. SO4 ness Date MPN MPN MPN # cells # cells # um #cells mg/L mg/L mg/L 05/03/17 8.12 9.7 06/07/17 8.00 10.2 07/12/17 8.55 1.2 08/01/17 6.58 10.9 09/07/17 7.65 12.6 Maximum 8.55 12.6 Minimum 6.58 1.2 Average 7.78 8.9 #Tests 0 0 . 0 0 0 0 0 0 0 0 5 5 0 Site: SW-12 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Bruns Diversion ALPINE COUNTY SURFACEWATER.QUALITY DATA 25"above From 1981 Fredericksburg Ditch To: 2017 Temp Alkalinity Turbidity SS TDS EC Chloride Total.P PO4-P Boron K Year C pH mg/L NTU mg/L mg/L umhos mg/L mg/L mg/L mg/L mg/L 01 18.6 8.23 243 489, 62.2 2.69 2.56 03 17.5 8.01 296. 436 57.2 2.48 2.26 03 17.0 7:93 241 465 58.2 2.56 2.35 04 17.7 8.16. 243 490 61.8 3.13 2.95 05 16.1 7.83 217 361 39.1 2.37 -2.32 06 17.5 8.24 229 438 47.4 2.57 2.40- 07 18.2 8.26 270 503 56.0 3.19 2.90 08. 17.4 8.25 254 470 54.7 3.31 2.99 09 20.2 8.38 259 503 53.6 3.40 3.20 10 17.5 8.25 257 483 53.6 3.14 2.95 11 18.2 8:35 205 388 43.7 1.99 1.90 12 20.6 8.45 256 468 52.6 2.98 2.73 13 18.0 8.02 252 448 50.6 2.65 2.54 14 17.3 8.16 286 524 44.6 3.31 2.28 15 17.0 7.97 278 489 53.8 3.27 3.11 16 14.8 7.50 33.3 200 382 33.5 2.28 1.67 17 17.4 7.97- 173 324 35.5 1.54 1.38 Maximum 20.6 8.45 33.3 296 524 62.2 3.40 3.20 Minimum 14.8 7.50 33.3 173 324 33.5 1.54 1.38 Average 17.7 8.11 33.3- 244 451 50.5 2.76 2.50 #Tests 17 17 0 0 1 17 17 17 17 17 0 0 Site: SW-12 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Bruns Diversion ALPINE COUNTY,SURFACEWATER QUALITY DATA 25"above- From: 1981 Fredericksburg Ditch To: 2017 Oil& TKN NH3-N NO2-N NO3-N Total N COD BOD Grease Ca Mg Na SAR Na Year mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L % 01 15.37 13.97 0.59 1.44 17.39 03 11.48 9.00 1.97. 2.78 16.23 03 13.92 11.50 0.71 .2.77 17.40 04 14.48 13.51 0.68 2.89 18.04 05 10.14 9.17 0.55- 1.78 12.47 06 14.26 13.12 0.53 1.69 16.52 07 16.92 14.24 0.63 1.22 18.77 08 12.68 10.19 0.88 2.58 16.13 09 13.13 12.17 1.15 2.24 9.91 10 12.00 9.95 1.15 2.93 -.16.07 11 8.30 6.11 1..46 3.34 13.11 12 11.91 9.27 1.82 4.21 17.94 13 11.85 9.59 0.86 4.01 16.72 14 15.63 11.92 0.55 3.74 19.93 15 10.64 8.48 1.79 6.10 18.53 16 9.29 7.43 0.68 2.02 11.99. 17 10-.85' 5.42 0.98 2.90 1472 Maximum 16.92 14.24 1.97 6.10 19.93 Minimum 8.30 5.42 0.53 1.22 9.91 Average 12.52 10.30 1.00 2.86 15.99 #Tests 17 17 17 17 17 0 0 0 0 0 0 0 0 Site: SW-12 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Bruns Diversion ALPINE COUNTY SURFACEWATER QUALITY DATA .25"above From: 1981 Fredericksburg Ditch To: 2017 Coliforms Fecal/ Fecal <--------------------------Blue Green Algae-------------------------------> Single Hard- Total. E.coli Strep <------Colonies------> <-----Filaments------> <---Filamaments---> Cells D.O. SO4 ness Year MPN MPN. MPN # cells # cells # um #cells mg/L mg/L mg/L 01 7.95 18.72 03 6.44 16.96 03 6.82 18.70 04 8.27 16.85 05 6.96 13.11 06 7.53 13.26 07 6.94 15.22 08 7.31 15.28 09 7.70 15.80 10 6.35 15.55 11 7.58 12.47 12 6.32 15.17 13 6.53 15.50 14 7.17 12.29 15 7.85 18.10 16 9.23 9.59 17. 7.78 8.92 Maximum 0 0 0 0 0 0 0 9.23 18.72 Minimum 0 0 0 0 0 0 0 6.32 8.92 Average 7.34 14.79 #Tests 0 0 0 0 0 0 0 0 0 0 17 17 0 Site: SW= 12 Nitrate-Mitrogen Total Phosphorus 10.0 10.0 9.0 9.0 8.0 8.0 7.0 7.0 6.0 6.0 J J 5.0 5.0 4.0 4.0 3.0 3.0 2.0 2.0 1.0 1.0 0.0 0.0 01 03 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 01 03 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 —+—Nitrate Linear(Nitrate) —+—Total Phosphorus Linear(Total Phosphorus) Chlorides Total Dissolved Solids 100 500 90 80 400 70 60 300 a�E E 50 a� 40 200 30 20 100 10 0 0 01 03 03 04. 05 06 07 08 09 10 11 12 13 14 15 16 17 01 03 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 --♦—Chlorides Linear(Chlorides) TDS Linear(TDS) Site: SW-13. SOUTH TAHOE PUBLIC UTILITY DISTRICT . Stream: Fredericksburg Ditch ALPINE COUNTY SURFACEWATER QUALITY DATA 100'below confluence with reclaimed water 2017 Temp Alkalinity Turbidity SS TDS EC Chloride Total P PO4-P Boron K Date C pH mg/L NTU mg/L mg/L umhos mg/L mg/L mg/L mg/L mg/L 05/03/17 10.4 8.15 57 69.3 3.850 0.171 0.136 06/07/17 6.8 7.68 44 64.3 2.370 0.150 0.086 07/12/17 12.1 7.33 37 47.5 < 0.500 0.045 0.011 08/01/17 16.5 7.03 99 140 12.40.0 0.347 0.266 - 09/07/17 15.9 7.93 92 130 8.740 0.360 0.327 Maximum 16.5 8.15 99 140 12.400 0.360 0.327 Minimum 6.8 7.03 37 47.5 < 0.500 0.045 < 0.011 Average 12.3 7.62 66 90 5.572 0.215 0.165 #Tests 5 5 0 0 0 5 5 5 5 5 0 0 Site:- SW-13 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Fredericksburg Ditch -ALPINE.COUNTY SURFACEWATER QUALITY-DATA 100'below confluence with reclaimed water 2017 Oil& TKN NH3-N NO2-N NO3-N Total N COD .BOD Grease Ca Mg Na SAR Na Date mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L % 05/03/17 0.944 0.712 0.026 0.148 1.120 '06/07/17 0.596 0.484 0.024 0.124 0.744 07/12/17 0.130 < 0.020_ < 0.010 < 0.010 0.130 08/01/17 1.990 0.609 0.159 0.930 3.080 09/07/17 0.232 0.473 0.468 1.010 1.710 Maximum 1.990 0.712 0.468 .1.010 3.080 Minimum 0.130 < 0.020. < 0.010 < 0.010 0.130 Average 0,778 0.460 0.137 0.444 1.357 #Tests 5 5 5 5 5 0 0 0 0 0 0 0 0 Site: SW-13 SOUTH TAHOE PUBLIC UTILITY DISTRICT _ Stream: Fredericksburg Ditch ALPINE COUNTY SURFACEWATER QUALITY DATA 100'below confluence with reclaimed water 2017 Coliforms Fecal Blue Green Algae--------------------------- Single Hard- Total ----> Total E.-coli Strep. <------Colonies-----> <-----Filaments------> <---Filamaments---> Cells D.O. SO4 ness- Date MPN MPN MPN # cells # cells # um #cells mg/L mg/L mg/L 05/03/17 9.49 1.60 06/07/17 10.30 1.20 07/12/17 9.52 0.89 08/01/17 7.11 3.35 09/07/17 8.61 3.16 Maximum 10.30 3.35 Minimum 7.11 0.89 Average 9.01 2.04. #Tests 0 0 0 0 0 0 0 0 0 0 5 5 0 Site: SW-13 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Fredericksburg Ditch ALPINE COUNTY SURFACEWATER QUALITY DATA 100'below confluence From 1981 with reclaimed water To: 2017 Temp Alkalinity Turbidity SS TDS EC Chloride Total P PO4-P Boron K Year C pH mg/L NTU mg/L. mg/L umhos mg/L mg/L mg/L mg/L mg/L 01 16.3 7.72 106 179 16.3 0.63 0.61 02 13.2 7.72 101 153 14.4 0.73 0.53 03 12.7 7.80 97 155 13.8 0.60 0.53 04 12.6 7.65 108 - 178 17.1 0.89 0.77 05 11.8 7.61- 85 115 10.1 0.48 0.47 06 12.5 7.72 106 171 15.6 0.79 0.72 07 13.5 7.71. 98 152 11.6 0.57 0.51 08 13.4 7.86 144 252 25.4 1.50 1.37 09 13.6 7.68 103 174 14.7 0.94 0.85 10 10.3 7.37 77 105 7.3 0.31 0.28 11 13.0 8.28 114 182 15.8 0.76 0.71 12 12.7 7.16 73 91 4.5 0.20 0.17 13 15.8 7.56 86 133 8.6 0.44 0.42 14 16.1 7.89 105 185 13.7 0.71 0.67 15 14.0 7.39 78 117 5.8 0.28 0.25 16 1.2.5 7.40 0.8 116 190 17.0 1.02 0.83 17 12.3 7.62 66 90 5.6 0.21 0.17 Maximum 16.3 8.28 0.8 144 252 25.4 1.50 1.37 Minimum 10.3 7.16 0.8 66 90 4.5 0.20 0.17 Average 13.3 7.66 0.8 98 154 12.8 0.65 0.58 #Tests 17 17 0 0 1 17 17 17 17 17 0 0 Site: SW-13 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Fredericksburg Ditch ALPINE COUNTY SURFACEWATER QUALITY DATA 100'below confluence From: 1981 with reclaimed water To: 2017 Oil&. TKN NH3-N NO2-N NO3-N- Total N COD BOD Grease Ca Mg Na SAR Na Year mg/L mg/L mg/L mg/L mg/L. mg/L mg/L mg/L mg/L mg/L mg/L % 01 3.79 4.40 0.16 0.40 4,35 02 1.99 1.97 020 0.74 2.93 03 3.21 2.73 0..16 0.48 3.85 04 3.68 3.56 0.18 0.77 4.63 05 1.88 1.53 0.14 0.36 2.38 06 5.08 4.39 0.14 0.50 5.72 07 2.91 2.33 0.-11 0.20 3.21 08 5.76 4.53 0.46 1.33 7.55 09 3.10 2.70 0.30 0.62 4.02 10 0.87 0.6.4 0.09 0.61 1.57 11 2.89 1.97 0.61 1.24 12 0.61 0.23 0.10 0.59 1.30 13 1.75 1.23 0.14 0.48 2.36 14 2.43 2.45 0.16 1.11 3.68 15 0.85 0.51 0.12 0.61 1.57 16 3.30 2.61 0.31 1.06 4,66 17 0.78 0.46 0.14 0.44 1.36 Maximum 5:76 4.53 0.61 1.33 7.55 Minimum 0.61 0.23 0.09 0.20 1.30 Average 2.64 2.25 0.21 0.68 3.52 #Tests 17 17 17 17 17 0 0 0 0 0 0 0 0 Site: SW-13 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Fredericksburg Ditch ALPINE COUNTY SURFACEWATER QUALITY DATA 100'below confluence From: 1981 , with reclaimed water To: 2017 Coliforms Fecal/ Fecal <--------------------------Blue Green Algae-------------------------------> Single Hard- Total E.co/i Strep <------Colonies----:-> <-----Filaments------> <---Filamaments---> Cells D.O. SO4 ness Year MPN MPN MPN # cells # cells # um #cells mg/L mg/L mg/L 01 8.56 6.10 02 8.50' 5.69 03 7.93 5.42 04 7.81 5.66 05 8.36 4.03 06 8.07 5.40 07 8.10 4.44 08 8.20 8.04 09 8.62 5.09 10 7.45 3.31 11 8.88 5.37 12 8.33 2.68 13 6.94 4.03 14 7.87 5.26 15 8.93 3.64 16 9.27 5.72 17 9.01 2.04 Maximum 0 0 0 0 0 0 0 9.27 8.04 Minimum 0 0 0 0 0 0 0 6.94 2.04 Average 8.28 4.82 #Tests 0 0 0 0 0 0 0 0 0 0 17 17 0 Site: SW-13 Nitrate-Nitrogen Total Phosphorus .5.0 5.0 4.0 4.0 3.0 3.0 J J E E 2.0 2.0 5 1.0 1.0 0.0 0.0 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17-- Nitrate Linear(Nitrate) —+—Total Phosphorus. Linear(Total Phosphorus) Chlorides Total Dissolved Solids 0 50 500 40 400 30 300 J J 20 200 10 100 0 0 01 02 03 04 05 -06 07 08 09 10 11 12 13 14 15 16 17 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 —�Chlorides Linear(Chlorides) TDS Linear(TDS) Site: SW-15 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Celio Tailwater ALPINE COUNTY SURFACEWATER QUALITY DATA @ Brooke Diversion 2017 Temp Alkalinity Turbidity SS TDS EC Chloride Total P PO4-P Boron K Date C pH mg/L NTU mg/L mg/L umhos mg/L mg/L mg/L mg/L mg/L 05/03/17 18.0 8.21 322 514- 47.7 0.855 0.782 06/07/17 17.0 7.72 227 414 43.0 1.270 1.180 07/12/17 21.2 7.24 161 304 25.1 0.925 0.804 08/01/17 22.5 7.76 207 376 46.7 1.980 1.760 Maximum 22.5 8.21 322 514 47.7 1.980 1.760 Minimum 17.0 7.24 161 304 25.1 0.855 0.782 Average 19.7 . 7.73 229 402 40.6 1.258 1.132 #Tests 4 4 0 0 0 4 4 4 4 4 0 0 Site: SW-15 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Cello Tailwater ALPINE COUNTY SURFACEWATER(QUALITY DATA @ Brooke Diversion 2017 Oil& TKN NH3-N NO2-N NO3-N Total N COD BOD Grease Ca Mg Na SAR Na Date mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L % 05/03/17 1.120 0.035 0.012 0.612 1.74 06/07/17 — 4.070 0.524 2.490 07/12/17 0.600 0.130 0.132 2.160 2.89 08/01/17 4.940 3.090 1.100 5.560 11.60 Maximum 4.940 4.070 1.100 5.560 11.60 Minimum 0.600 0.035 0.012 0.612 1.74 Average 2.220 1.831 0.44.2 2.706 5.41 #Tests 3 4 4 4 3 0 0 0 0 0 0 0 0 Site: - SW-15 SOUTH TAHOE PUBLIC UTILITY.DISTRICT Stream: Celio Tailwater ALPINE COUNTY SURFACEWATER QUALITY DATA @ Brooke Diversion 2017 Coliforms Fecal <--------------------------Blue Green Algae-------------------------------> Single Hard- Total E.coli Strep <------Colonies------> <-----Filaments------> <---Filamaments---> Cells D.O. SO4 ness Date MPN MPN MPN # cells # cells # um #cells mg/L mg/L mg/L 05/03/17 -8.45 13.30 06/07/17 6.07 10.80 07/1 2/17 7.70 5.42 08/01/17 5.05 10.30 Maximum 8.45 13.30 Minimum 5.05 5.42 Average 6.82 9.96 #Tests 0 0 0 0 0 0 0 0 0 0 4 4 0 Site: SW-15 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Celio Tailwater ALPINE COUNTY SURFACEWATER QUALITY DATA @ Brooke Diversion From 1981 To: 2017 Temp Alkalinity Turbidity SS TDS EC Chloride Total P PO4-P Boron K Year C pH mg/L NTU mg/L mg/L umhos mg/L m /L m /L m /L m /L 01 15.7 7.73 245 398 44.0. 1.40 1.35 02 14.1 7.69 220 325 36.9 1.27 1.13 03 13.5 7.45 255 395 44.6 1.35 1.24 04 13.2 7.49 228 373 46.2 1.80 1.76 05, 12.1 7.42 173 239 27.3 1.23 1.20 06 13.8 7.47 207 311 33.7 1.54 1.49 07 13.7 7.65 268 413 46.7 2.08 1.95 08 13.7 7.60 221 348 39.9 1.83 1.70 09 12.8 7.50 173 250 21.1 0.95 -0.64 10 10.5 7.71 116 160 15.2 0.54 0.49 11 14.4 7.88 189 204 33.0 1.09 0.89 12 13.4 7.23 189 314 27.3 1.27 1.09 . 13 17.8 7.48 313 494 .52.8 1.89 1.66 14 17.2 7.56 291 520 54.0 2.76 2.20 15 17.3 7.47 296 478 46.2 2.22 2.04 16 17.7 7.23 1.2 267 433 43.7 1.83 1.63 17 19.7 7.73 229 402 40.6 1.26 1.13 Maximum 19.7 7.88 1.2 313 520 54.0 2.76 2.20 Minimum 10.5 7.23 1.2 116 160 15.2 0.54 0.49 Average 14.7 7.55 1.2 228 356 38.4 1.55 1.39 #Tests 17 17 0 0 1 17 17 17 17 17 0 0 Site: SW-15 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Celio Tailwater ALPINE COUNTY SURFACEWATER QUALITY DATA @ Brooke Diversion From: 1981 To:. 2017 Oil& TKN NH3-N NO2-N NO3-N Total N COD BOD Grease Ca Mg Na SAR Na Year mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L % 01 4.43 2.96 0.29 1.39 6.11 02 2.98 1.94 0.18 1.87 5.03 03 2.72 2.14 0.24 2.96 5.92 04 5.15 4.77 0.27 3.41 8.83 05 3.61 2.98 0.15 1.77 5.53._ 06 4.98 4.02 0.29 3.12 8.39 07 6.47 4.77 0.25 2.31 9.02 08 - 3.44 2.59 0.32 3.42 6.15 09 1.39 0.05 0.04 1.00 2.43 10 0.48 0.02 0.07 1.10 1.64 11 1.94 0.67 .0.28 2.33 4.55 12 5.80 4.15 0.17 1.04 7.01 13 3.01 3.59 0.36 3.09 5.34 14 6.01 5.47 0.71 4.09 10.81 15 4.84 . 3.40 0.91 4.40 10.11 16 4.25 3.00 0.70 2.44 7.38 17 2.22 1.83 0.44 2.71 5.41 Maximum 6.47 5.47 0.91 4.40 10.81 Minimum 0.48 0.02 0.04 1.00 1.64 Average 3.75 2.84 0.33 2.50 6.45 #Tests 17 17 17 17 17 0 0 0 0 0 0 0 0 Site: SW-15 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Celio Tailwater ALPINE COUNTY SURFA_CEWATER QUALITY DATA @ Brooke Diversion From: 1981 To: 2017 Coliforms Fecal/ Fecal <--------------------------Blue Green Algae-------------------------------> Single Hard- Total E.coli Strep <------Colonies-----=> <-----Filaments---_--> <---Filamaments---> Cells D.O. SO4 ness Year MPN MPN MPN # cells # cells # um #cells m /L mg/L mq/L 01 7.99 14.47 02 8.34 10.85 03 5.36 14.46 04 6.54 11.95 05 7.03 8.55 06 6.24 10.43 .07 6.32 12.81 08 6.76 11.13 09 7.80 6.66 10 7.14 6.31 11 7.17 8.81 12 8.30 7.58 13 8.04 17.43 14 6.04 15.86 15 5.93 15.34 16 8.30 14.03 17 6.82 9.96 Maximum 0 0 0 0 0 0 0 8.34 17.43 Minimum 0 0 0 0 0 0 0 5.36 6.31 Average 7.07 11.57 #Tests 0 0 0 0 0 0 0 0 0 0 17 17 0 Site: SW=15 Nitrate-Nitrogen Total Phosphorus 10.0 T 10.0 9.0 9.0 8.0 8.0 7.0 7.0 6.0 6.0 J J a, 5.0 e, 5.0 E E 4.0 4.0 3.0 3.0 2.0 2.0 1.0 1.0 0.0 0.0 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 —�—Nitrate Linear(Nitrate) Total Phosphorus Linear(Total Phosphorus) Chlorides Total Dissolved Solids 100 T 500 90 80 400 70 60 300 J J a� 50 rn E E 40 200 30 20 100 10 0 0 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 —�Chlorides Linear(Chlorides) —s TDS Linear(TDS) Site: SW-16 . SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Drain Ditch ALPINE COUNTY SURFACEWATER QUALITY DATA @ Fairview Lane 2017 Temp Alkalinity Turbidity SS TDS EC Chloride Total P PO4-P Boron K Date C pH mg/L NTU mg/L mg/L umhos mg/L mg/L mg/L -mg/L mg/L 05/03/17 24.1 7.51 172 237 15.6 0.204 0.043 06/07/17 12.3 7.49 115 198 9.2 0.114 0.044 07/12/17 19.5 7.33 174 237 16.3 0.130 0.036 08/01/17 17.0 7.31 179 234 15.4 0.200 0.062 09/07/17 19.5 . 6.60 247 347 32.8 0.195 0.046 Maximum 24.1 7.51 247 347 32.8 0.204 0.062 Minimum 12.3 6.60 115 198 9.2 0.114 0.036 Average 18.5 7.25 177 251 17.9 0.169 0.046 #Tests 5 5 0 0 0 5 5 5 5 5 0 0 i Site: SW-16 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Drain Ditch ALPINE COUNTY SURFACEWATER QUALITY DATA @ Fairview Lane 2017 Oil& TKN NH3-N NO2-N NO3-N Total N COD BOD Grease Ca Mg Na SAR Na Date mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L % 05/03/17 1.410 0.031 < 0.010 0.029 1.440 06/07/17 0.634 0.058 0.013 0.200 0.847 07/12/17 0.905 < 0.020- < 0.010 0.021 0.926 08/01/17 0.920 0.056 < 0.010 0.288 1.210 09/07/17 1.630 0.055 < 0:010 0.086 1.720 Maximum 1.630 0.058 0.013 0.288 1.720 -Minimum 0.634 < 0.020 < 0.010 0.021 0.847 Average 1.100 0.044 0.011 0.125 1.229 #Tests 5 5 5 5 5 0 0 0 0 0 0 0 0 Site: SW-16 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Drain Ditch ALPINE COUNTY SURFACEWATER QUALITY DATA @ Fairview Lane 2017 Coliforms Fecal <--------------------------Blue Green Algae-------------------------------> Single Hard- Total E. coli Strep <------Colonies------> <-----Filaments------> <---Filamaments---> Cells D.O. SO4 ness Date MPN MPN MPN # cells # cells # um #cells mg/L mg/L mg/L 05/03/17 8.46 4.32 06/07/17 8.70 2.81 07/12/17 7.70 2.79 08/01/17 7.47 4.32 09/07/17 6.43 4.74 Maximum 8.70 4.74 Minimum 6.43 2.79 Average 7.75 3.80 #Tests 0 0 0 0 0 0 0 0 0 0 5 5 0 Site: SW-16 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Drain Ditch - ALPINE COUNTY SURFACEWATER QUALITY DATA @ Fairview Lane From 1981 To: 2017 Temp Alkalinity Turbidity SS TDS EC Chloride Total P PO4-P Boron K Year C pH mg/L NTU mg/L mg/L umhos mg/L mg/L mg/L mg/L mg/L 01 02 14.5 7.53. 177 263 21.5 0.06 0.02 03 15.6 7.67 159 233 19.5 0.10 0.03 04 15.1 7.50 154 226 18.9 0.19 0.02 05 14.8 7.30 158 206 21.7 0.09 0.03 06 15.3 7.37 154 206 18.9 0.12 0.06 07 15.7 7.59 160 227 17.8 .0.07 0.02 08 15.6 7.70 165 244 20.3 0.08 0.03 09 17.1 7.64 193 301 23.5 0.60 0.33 10 14.8 7.43 192 282 25.7 0.15 0.03 11 15.6 7.70 161 228 20.7 0.22 0.10 12 19.6 7.38 152 231 15.5 0.11 0.03 13 18.0 7.31 181 253 19.9 0.10 0.03 14 19.0 7.60 196 266 20.7 0.06 0.02 15 17.3 7.31 184 277 21.5 0.07 0.02 16 17.7 7.24 3.3 183 273 22.5 0.09 0.02 17 18.5 7.25 177 251 17.9 0.17 0.05 Maximum 19.6 7.70 3.3 196 301 25.7 0.60 0.33 Minimum 14.5 7.24 3.3 152 206 15.5 0.06 0.02 Average 16.5 7.47 3.3 172 248 20.4 0.14 0.05 #Tests 16 16 0 0 1 16 16 16 16 16 0 0 Site: SW-16 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Drain Ditch . ALPINE COUNTY SURFACEWATER QUALITY DATA @ Fairview Lane From: 1981. To: 2017 Oil& TKN NH3-N NO2-N NO3-N Total N COD BOD Grease Ca Mg Na SAR Na. Year mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L % 01 02 0.46 0.05 < 0.01 0.07 0.55 03 0.58 0.07 0.02 0.10 0.74 04 0.88 0.07 0.02 0.10 1.00 05 1.13 0.04 0.02 0.17 1.31 06 0.98 0.35 0.02 0.34 1.35 07 0.47 0.03 < 0.01 .0.08 0.57 08 0:74 0.06 0.03 0.16 0.93 09 2.36 1.44 0.13 1.18 3.67 10 0.79 0.03 < 0.01 0.15 0.95 11 1.20 0.11 0.06 0.40 1.66 12 0.77 0.24 < 0.01 0.14 0.93 13 0.74 0.07 0.03 0.15 0.91 14 0.54 0.04 0.01 0.13 0.67 15 0.38 0.02 < 0.01 0.01 0.38 16 0.68 0.02' 0.01 0.05 0.73 17 1.10 0.04 0.01 0.12 1.23 Maximum 2.36 1.44 0.13 1.18 3.67 Minimum 0.38 0.02 < 0.01 0.01 0.38 Average 0.86 0.17 0.03 0.21 1.10 #Tests 16 16 16 16 16 0 0 0 0 0 0 0 0 Site: SW-16 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Drain Ditch ALPINE COUNTY SURFACEWATER QUALITY DATA @ Fairview Lane From: 1981 To: 2017 Coliforms Fecal/ Fecal <--------------------------Blue Green Algae--------------------------------> Single Hard- Total E.coli Strep <------Colonies------> <-----Filaments------> <---Filamaments---> Cells D.O. SO4 ness Year MPN MPN MPN # cells # cells # um #cells m /L- mg/L mg/L 01 02 6.97 8.04 03 7.03 6.75 04 7.73 6.35 05 8.79 6.95 06 8.90 6.05 07 8.27 6.36 08 7.61 7.85 09 7.80 7.66 10 6.34 7.05 11 8.26 5.21 12 8.88 6.58 13 8.60 7.77 14 8.46 7.41 15 7.12 5.66 16 9.10 7.14 17 7.75 3.80 Maximum 0 0 0 0 0 0 0 9.10 8.04 Minimum 0 0 0 0 0 0 0 6.34 3.80 Average 7.98 6.66 #Tests 0 0 0 0 0 0 0 0 0 0 16 16 0 Site: SW 16 Nitrate-Nitrogen Total Phosphorus 5.0 .1.0 0.9 4.0 0.8 0.7- 3.0 0.6 J J 0.5 E � 2.0 0.4 0.3 1.0 0.2 0.1 0.0 0.0 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 —+—Nitrate Linear(Nitrate) --*--Total Phosphorus Linear(Total Phosphorus) Chlorides Total Dissolved Solids 50 250 40 200 30 150 J J 20 100 10 T 50 0 0 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 —�--Chlorides Linear(Chlorides) —♦—TDS Linear(TDS) TRIHALOMETHANES (THM) MTBE (Methyl tertmButyl Ether) MONITORING i� AGRICULTURAL Analytical Chemists May 19, 2017 South Tahoe Public Utility District Lab ID : SP 1705367 1275 Meadow Crest Drive Customer : 2-11369 South Lake Tahoe, CA 96150 Laboratory Report Introduction: This report package contains total of 5 pages divided into 3 sections: Case Narrative (2 pages) : An overview of the work performed at FGL. Sample Results (1 page) : Results for each sample submitted. Quality Control (2 pages) : Supporting Quality Control (QC)results. Case Narrative This Case Narrative pertains to the following samples: Sample Description Date Date FGL Lab ID # Matrix Sampled Received Diamond Ditch @ Beginning 05/03/2017 05/05/2017 SP 1705367-001 WW Sampling and Receipt Information: All samples were received in acceptable condition and within temperature requirements,unless noted on the Condition Upon Receipt(CUR) form. All samples arrived at 3 'C. All samples were prepared and analyzed within the method specified hold time. All samples were checked for pH if acid or base preservation is required(except for VOAs). For details of sample receipt information,please see the attached Chain of Custody and Condition Upon Receipt Form. Quality Control: All samples were prepared and analyzed according to the following tables: Organic QC 05/17/2017:205945 All preparation quality controls are within established criteria,except: The following note applies to Dibromofluromethane: 5030B .320 LCS not'within Acceptance Range(AR).Data was accepted based on the BS/BSD recovery. The following note applies to Dibromofluromethane: 435 Sample matrix may be affecting this analyte.Data was accepted based on the LCS or CCV recovery. 8260B 05/17/2017:207386 All analysis quality controls are within established criteria. Pagel of 5 Corporate Offices&Laboratory Office&Laboratory Office&Laboratory Office&Laboratory Office&Laboratory 853 Corporation Street 2500 Stagecoach Road 563 E.Lindo Avenue 3442 Empresa Drive,Suite D 9415 W.Goshen Avenue Santa Paula,CA 93060 Stockton,CA 95215 Chico,CA 95926 San Luis Obispo,CA 93401 Visalia,CA 93291 TEL:(805)392-2000 TEL:(209)942-0182 TEL:(530)343-5818 TEL:(805)783-2940 TEL:(559)734-9473 Env FAX:(805)525-4172/Ag FAX:(805)392-2063 FAX:(209)942-0423 FAX:(530)343-3807 FAX:(805)783-2912 FAX:(559)734-8435 CA ELAP Certification No.1573 CA ELAP Certification No.1563 CA FLAP Certification No.2670 CA ELAP Certification No.2775 CA ELAP Certification No.2810 May 19, 2017 Lab ID : SP 1705367 South Tahoe Public Utility District Customer : 2-11369 Certification:: I certify that this data package is in compliance with ELAP standards,both technically and for completeness, except for any conditions listed above. Release of the data contained in this data package is authorized by the Laboratory Director or his designee, as verified by the following electronic signature. KD:VT Digitally signed by David'I'en.,B.A.,M.B.A. Approved By David Terz,B.A.,M.B.A. Title:QA Director Date:2017-05-22 Page 2 of 5 Dwa ENVIRONMENTA AGRICULTURAL Analytical Chemists May 19, 2017 Lab ID : SP 1705367-001 Customer ID : 2-11369 South Tahoe Public Utility District 1275 Meadow Crest Drive Sampled On : May 3, 2017-11:00 South Lake Tahoe, CA 96150 Sampled By : P. Kunibe Received On : May 5,2017-10:5 5 Matrix : Waste Water Description : Diamond Ditch @ Beginning Project : AG55952 Sample Result- Organic Constituent Result PQL Units Note Sample Preparation Sample Analysis Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzenet 103 79-119 % 5030B 05/17/17:205945 8260B 05/17/17:207386 Dibromofluoromethanet 87.0 84-136 % 5030B 05/17/17:205945 8260B 05/17/17:207386 1,2-Dichloroethane-d4$ 83.7 58-166 % 5030B 05/17/17:205945 8260B 05/17/17:207386 Toluene-d8$ 97.8 88-111 % 5030B 05/17/17:205945 8260B 05/17/17:207386 Benzene ND 0.5 ug/L 5030B 05/17/17:205945 8260B 05/17/17:207386 Bromodichloromethane ND 1 ug/L 5030E 05/17/17:205945 8260B 05/17/17:207386 Bromoform ND 1 ug/L 5030B 05/17/17:205945 8260B 05/17/17:207386 tert-Butanol ND 5 ug/L 5030B 05/17/17:205945 8260B 05/17/17:207386 Chloroform ND 1 ug/L 5030B 05/17/17:205945 8260B 05/17/17:207386 Dibromochloromethane ND 2 ug/L 5030B 05/17/17:205945 8260B 05/17/17:207386 Di-isopropyl ether(DIPE) ND 05 ug/L 5030B 05/17/17:205945 8260B 05/17/17:207386 Ethyl Benzene ND 0.5 ug/L 5030B 05/17/17:205945 8260B 05/17/17:207386 Ethyl tert-butyl ether (ETBE) ND 0.5 ug/L 5030B 05/17/17:205945 8260B 05/17/17:207386 Methyl tert-butyl ether (MTBE) ND 0.2 ug/L 5030B 05/17/17:205945 8260B 05/17/17:207386 tert-Amyl methyl ether (TAME) ND 0.5 ug/L 5030B 05/17/17:205945 8260B 05/17/17:207386 Toluene ND 0.5 ug/L 5030B 05/17/17:205945 8260B 05/17/17:207386 Xylenes ND -- ug/L 5030B 05/17/17:205945 8260B 05/17/17:207386 Total Trihalomethanes ND -- ug/L 5030B 05/17/17:205945 8260B 05/17/17:207386 ND=Non-Detected.PQL=Practical Quantitation Limit.$Surrogate.*PQL adjusted for dilution. Page 3 of 5 Corporate Offices&Laboratory Office&Laboratory Office&Laboratory Office&Laboratory Office&Laboratory 853 Corporation Street 2500 Stagecoach Road 563 E.Lindo Avenue 3442 Empresa Drive,Suite D 9415 W.Goshen Avenue Santa Paula,CA 93060 Stockton,CA 95215 Chico,CA 95926 San Luis Obispo,CA 93401 Visalia,CA 93291 TEL:(805)392-2000 TEL:(209)942-0182 TEL:(530)343-5818 TEL:(805)783-2940 TEL:(559)734-9473 Env FAX:(805)5254172/Ag FAX:(805)392-2063 FAX:(209)942-0423 FAX:(530)343-3807 FAX:(805)783-2912 FAX:(559)734-8435 CA ELAP Certification No:1573 CA ELAP Certification No.1563 CA ELAP Certification No.2670 CA ELAP Certification No.2775 CA ELAP Certification No.2810 C ENVIRONMENTAL� Analytical May 19, 2017 Lab ID : SP 1705367 South Tahoe Public Utility District Customer : 2-11369 Quality Control-Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,2-Dichloroethane-d4 5030B 05/17/17:205945VRG Blank ug/L 25.00 84.8% 58-166 LCS ug/L 25.00 82.5% 58-166 MS ug/L 25.00 82.9% 58-166 (sP 1705367-001) MSD ug/L 25.00 87.1% 58-166 MSRPD ug/L 25.00 5.0% <20.0 -Bromofluorobenzene 5030B 05/17/17:205945VRG Blank ug/L 25.00 102% 79-119 LCS ug/L 25.00 100% 79-119 MS ug/L 25.00 102% 79-119 (SP 1705367-001) MSD ug/L 25.00 102% 79-119 MSRPD ug/L 25.00 0.7% <20.0 Benzene 5030B 05/17/17:205945VRG Blank ug/L ND <0.5 LCS ug/L 25.00 93.1% 60-134 MS ug/L 25.00 98.6% 47-169 (SP 1705367-001) MSD ug/L 25.00 96.2% 47-169 MSRPD ug/L 25.00 2.4% <24 romodichloromethane 5030B 05/17/17:205945VRG Blank ug/L ND <0.5 Bromoform 5030B 05/17/17:205945VRG Blank ug/L ND <0.5 Chloroform 5030B 05/17/17:205945VRG- Blank ug/L ND <1 Dibromochloromethane 5030B 05/17/17:205945VRG Blank ug/L ND <1 ibromofluromethane 5030B 05/17/17:205945VRG Blank ug/L 25.00 83.1% 84-136 LCS ug/L 25.00 82.2% 84-136 325 MS ug/L 25.00 83.6% 86-127 435 (SP 1705367-001) MSD ug/L 25.00 86.6% 86-127 MSRPD ug/L 25.00 3.6% <20.0 Ethyl tert-Butyl Ether 5030B 05/17/17:205945VRG Blank ug/L ND <2 thylbenzene 5030B 05/17/17:205945VRG Blank ug/L ND <0.5 Isopropyl Ether 5030B .05/17/17:205945VRG Blank ug/L ND <5 Methyl tert-Butyl Ether(MTBE) 5030B 05/17/17:205945VRG Blank ug/L ND <2 TAME 5030B 05/17/17:205945VRG Blank ug/L ND <5 ert-Butanol 5030B 05/17/17:205945VRG Blank ug/L ND <5 Toluene 5030B 05/17/17:205945VRG Blank ug/L ND <0.5 LCS ug/L 25.00 100% 56-131 MS ug/L 25.00 109% 44-164 (SP 1705367-001) MSD ug/L 25.00 102% 44-164 MSRPD ug/L 25.00 6.4% <30 oluene-d8 5030B 05/17/17:205945VRG Blank ug/L 25.00 97.0% 88-111 LCS ug/L 25.00 96.9% 88-111 MS ug/L 25.00 96.7% 88-111 (SP 1705367-001) MSD ug/L 25.00 96.3% 88-111 MSRPD ug/L 25.00 0.4% <20.0 ylenes m,p 5030B 05/17/17:205945VRG Blank ug/L ND <2 1,2-Dichloroethane-d4 8260B 05/17/17:207386VRG CCV ug/L 25.00 90.2% 70-130 Bromofluorobenzene(BFB) 8260B 05/17/17:207386VRG CCV ug/L 25.00 103% 70-130 Benzene 8260B 05/17/17:207386VRG CCV ug/L 25.00 116% 70-130 Bromodichloromethane 8260B '05/17/17:207386VRG CCV ug/L 25.00 96.1% 70-130 romoform 8260B 05/17/17:207386VRG CCV ug/L 25.00 95.3% 70-130 Chloroform 8260B 05/17/17:207386VRG CCV ug/L 25.00 97.4% 80-120 ibroinochloromethane 8260B 05/17/17:207386VRG CCV ug/L 25.00 98.8% 70-130 ibromofluromethane 8260B 05/17/17:207386VRG CCV ug/L 25.00 83.1% 70-130 Ethyl tert-Butyl Ether 8260B 05/17/17:207386VRG CCV ug/L 25.00 89.0% 50-150 thylbenzene 8260B 05/17/17:207386VRG CCV ug/L 25.00 117% 80-120 Isopropyl Ether 8260B 05/17/17:207386VRG .CCV ug/L 25.00 .90.3% 50-150 Methyl tert-Butyl Ether 8260B 05/17/17:207386VRG CCV ug/L 25.00 85.4% 70-130 TAME 8260B 05/17/17:207386VRG CCV ug/L 25.00 124% 50-150 ert-Butanol 8260B 05/17/17:207386VRG CCV ug/L 125.0 92.0% 50-150 Page 4 of 5 Corporate Offices&Laboratory Office&Laboratory Office&Laboratory Office&Laboratory Office&Laboratory 853 Corporation Street 2500 Stagecoach Road 563 E.Lindo Avenue 3442 Empresa Drive,Suite D 9415 W.Goshen Avenue Santa Paula,CA 93060 Stockton,CA 95215 Chico,CA 95926 San Luis Obispo,CA 93401 Visalia,CA 93291 TEL:(805)392-2000 TEL:(209)942-0182 TEL:(530)343-5818 TEL:(805)783-2940 TEL:(559)734-9473 Env FAX:(805)525-4172/Ag FAX:(805)392-2063 FAX:(209)942-0423 FAX:(530)343-3807 FAX:(805)783-2912 FAX:(559)734-8435 CA FLAP Certification No.1573 CA ELAP Certification No.1563 CA ELAP Certification No.2670 CA ELAP Certification No.2775 CA ELAP Certification No.2810 May 19,2017 Lab ID : SP 1705367 South\Tahoe Public Utility District Customer : 2-11369 Quality Control-Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Toluene 8260B 05/17/17:207386VRG CCV ug/L 25.00 119% 80-120 Toluene-d8 8260B 05/17/17:207386VRG CCV ug/L 25.00 96.1% 70-130 ylene m,p 8260B 05/17/17:207386VRG CCV ug/L 50.00 109% 70-130 Definition CCV :Continuing Calibration Verification-Analyzed to verify the instrument calibration is within criteria. Blank :Method Blank-Prepared to verify that the preparation process is not contributing contamination to the samples. LCS :Laboratory Control Standard/Sample-Prepared to verify that the preparation process is not affecting analyte recovery. MS :Matrix Spikes-A random sample is spiked with a known amount of analyte.The recoveries are an indication of how that sample matrix affects analyte recovery. MSD :Matrix Spike Duplicate of MS/MSD pair-A random sample duplicate is spiked with a known amount of analyted.The recoveries are an indication of how that sample matrix affects analyte recovery. MSRPD :MS/MSD Relative Percent Difference(RPD)-The MS relative percent difference is an indication of precision for the preparation and analysis. ND :Non-detect-Result was below the DQO listed for the analyte. DQO :Data Quality Objective-This is the criteria against which the quality control data is compared. Explanation 325 :The LCS was out of acceptance limits.Results may be biased low. 435 :Sample matrix may be affecting this analyte.Data was accepted based on the LCS or CCV recovery. Page 5 of 5 r CHAIN OF CUSTODY F1275 oe Public Utility District Lab Sent FGL Preservatives: Turn-Around-Time: ow Crest Drive •- VOC-HCI Standard e Tahoe,CA 96150 __ Sampler(s): p,Kunibe 0)-543-6231 •,•,6., 0 m N O � a T T a � a m O lu AG55952 OD-01 Diamond Ditch®Beginning Start of Diamond Ditch;at HPR 0510312017 11:00 WW x �( outlet Notes: Relinquished by: Relinquished by: Report MTBE to 0.2 ug/L 1 Analyze Travel and Field Blanks only if VOCs detected in samples. —Signiature OLGt.JV Signiature "Use Calif State WriteOn to report&upload results of Potable Water Wells. Print DGlue-3 TYP.oli c t l Print Company_South Tahoe Public Utility District Company Please Return all STPUD ice chests Blue Ice Date: W-04 I-• Time:-Lim- Date: Time: Comments: Relinquished by. � Relinquished by: S),A-W Signiature Signiature Tracking#D10011117153114I Print Print F Company Company ti Date: Time: Date: Time: Page 1 of 1 FGL Environmental Doc ID:2DO900157 SOP-1 7.DOC Revision Date: 10/09/14 Page: 1 of 1 Condition Upon Receipt(Attach to COC) Sample Receipt at SP: 1.Number of ice chests/packages received: 1 2• Shipper tracking numbers D100111171531.14 3.Were samples received in a chilled condition? Temps: 3 4.Surface water(SWTR)bact samples:A sample that has a temperature upon receipt of>10C,whether iced or not, should be flagged unless the time since sample collection has been less than two hours. 5.Do the number of bottles received agree with the Yes No NIA COC? 6.Verify sample date,time,sampler Yes No 'N/A 7.Were the samples received intact?(i.e. no broken Yes No bottles, leaks,etc.) 8.Were sample custody seals intact? Yes No N/A Sample Verification, Labeling and Distribution: 1.Were all requested analyses understood and Yes No acceptable? 2.Did bottle labels correspond with the client's ID's? Yes No 3.Were all bottles requiring sample preservation Yes No N/A FGL properly preserved? [Exception:Oil&Grease,VOA and CM verified in lab] 4.VOAs checked for Headspace? Yes No N/A 5.Were all analyses within holding times at time of Yes No receipt? 6.Have rush or project due dates been checked and Yes No NIA accepted? Include a copy of the COC for lab delivery.(Bacti. Inorganics and Radio) Sample Receipt, Login and Verification completed by: Reviewed and Digitally signed by Inez Covarrubias Inez Covarrubias Title:Sample Receiving Approved By Date:05/08/2017-09:46:09 Discrepency Documentation: Any items above which are"No"or do not meet specifications(i.e.temps)must be resolved. 1. Person Contacted: Phone Number: Initiated By: Date: Problem: Resolution: 2. Person Contacted: Phone Number: Initiated By: Date: Problem: Resolution: (2011369) South Tahoe Public Utility District SP 1705367 I V-0 5/0 8/2 017-0 9:4 6:0 9 MTBE Results Lower Sample Reporting Sample Site Date ID# Parameter Result Units Limit Method WWTP Final Effluent 02/28/2017 AG55048 MTBE ND ug/L 0.2 EPA8260 05/15/2017 AG56092 MTBE ND ug/L 0.2 EPA8260 08/15/2017 AG57577 MTBE ND . ug/L 0.2 EPA8260 11/15/2017 AG58994 MTBE ND ug/L 0.2 EPA8260 HPR Effluent 05/03/2017 AG55952 MTBE ND ug/L 0.2 EPA8260' ND =Not Detected at or above Lower Reporting Limit ug/L =micrograms per liter or parts per billion TEST METHODS Laboratory Analyses The Regional Board allows the District laboratory to use an alternate test method for Total Nitrogen and Total Kjeldahl Nitrogen (TKN). The District uses test method 1-4650-031 developed by United States Geological. Service (USGS),'for, Total Nitrogen. TKN is calculated by the subtraction of Nitrate-N and Nitrite-N from the Total Nitrogen result. The permit specifies that a performance evaluation (PE)test be done annually and the result is within an acceptable range. The report for this year's PE sample follows. d Ver. 1 Page 1 of 15 QFRA A Waters Company Terry Powers South Tahoe Public Utilities District 1275 Meadow Crest Dr. South Lake Tahoe, CA 96150 USA WP=266 Final PF WatR TM Pollution Proficiency Testing WatR TM Pollution Study Open Date: 03/13/17 Close Date: 04/27/17 Report Issued Date: 05/01/17 Study#:WP-266 Ver. 1 Page 2 of 15 OFItA A Waters Company May 1, 2017 Terry Powers South Tahoe Public Utilities District 1275 Meadow Crest Dr. South Lake Tahoe, CA 96150 Enclosed is your final report for ERA's WP-266 WatRTMPollution Proficiency Testing (PT)study. Your final report includes an evaluation of all results submitted by your laboratory to ERA. Data Evaluation Protocols:All analytes in ERA's WP-266 WatR TM Pollution Proficiency Testing study have been evaluated using the following tiered approach. If the analyte is listed in the current TNI Fields of Proficiency Testing (FoPT)tables,the evaluation was completed by comparing the reported result to the acceptance limits generated using the criteria contained in the current TNI FoPT tables. If the analyte is not included in the TNI FoPT tables,the reported result has been evaluated using the procedures outlined in ERA's Standard Operating Procedure for the Generation of Performance Acceptance Limits (SOP 730002268). Corrective Action Help:As part of your accreditation(s), you may be required to identify the root cause of any"Not Acceptable" results, implement the necessary corrective actions, and then satisfy your PT requirements by participating in a Supplemental (QuiKTmResponse)or future ERA.PT study. ERA's technical staff is available to help your laboratory resolve any technical issues that may be impairing your PT performance and possibly affecting your routine data quality. Our laboratory and technical staff have many years of collective experience in performing the full range of environmental analyses. As part of our technical support, ERA offers QC samples that can be useful in helping you work through your technical issues. At the request of the TNI Accreditation Council,we have included a Laboratory Exception Report that includes a list of all analytes reported with less than qualifiers when the assigned value was greater than "0." In addition, because we have received many requests from laboratories, this report also includes a list of all analytes with "Not Acceptable" evaluations. Some states have elected not to convert to the 2009 TNI Standards at this time. If you have released your results to a state that has retained the 2003 NELAC Evaluation Criteria,your final report will include a section that evaluates the results according to the 2003 Standard in addition to the 2009 TNI Standards. Thank you for your participation in ERA's WP-266 WatRTMPollution Proficiency Testing.study. If you have any questions, please contact our Proficiency Testing Department at 1-800-372-0122. Sincerely, Patrick Larson Quality Officer attachments 16341 Table Mountain Pkwy•Golden,CO 80403-800.372.0122-303.431.8454-fax 303.421.0159-www.eragc.com Study#:WP-266 J Ver. 1 Page 4 of 15 OFAA A Waters Company WP-266 Definitions & Study Discussion . Study Dates: 03/13/17-04/27/17 Report Issued: 05/01/17 WP Study Definitions WP Study Discussion The Reported Value is the value that the laboratory reported ERA's WP-266 WatRTMPollution Proficiency.Testing study to ERA. has been reviewed by ERA senior management and certified compliant with the requirements of the 2009 TNI PT Standard The ERA Assigned Values are compliant with the most and the criteria contained in the most current TNI Fields of current TNI Fields of Proficiency Testing(FoPT)tables. A Proficiency Testing(FoPT)tables. parameter not added to the standard is given an Assigned Value of"<PTRL"per the guidelines contained in the 2009 ERA's WP-266 WatRTMPollution study standards were TNI Standards. The assigned values.are directly traceable to examined for any anomalies. A full review of all homogeneity, the commercially prepared starting materials used to stability and accuracy verification data was completed. All manufacture the PT standards. analytical verification data for all analytes met the acceptance criteria contained in the 2009 TNI PT Standard and the The Acceptance Limits are established per the criteria criteria contained in the most current TNI FoPT tables. contained in the most current USEPA/NELAC FoPT tables,or ERA's SOP for the Generation of Performance Acceptance The data submitted by participating laboratories was also LimitsT""as applicable. examined for study anomalies. There were no anomalies observed during the statistical review of the data. The Performance Evaluation: ERA's WP-266 WatRTMPollution study reports shall not be reproduced except in their entirety and not without the permission of the participating laboratories. The report must Acceptable = Reported Value falls within the not be used by the participating laboratories to claim product Acceptance Limits. endorsement by any agency of the U. S.government. The data contained herein are confidential and intended for Not Acceptable = Reported Value falls outside the your use only. Acceptance Limits. If you have any questions or concerns regarding your assessment in ERA's WatRTMPollution Proficiency Testing No Evaluation = Reported Value cannot be evaluated. program, please contact our Proficiency Testing Department at 1-800-372-0122. Not Reported = No Value reported. The Method Description is the method the laboratory reported to ERA. ISOPEC 1*1043.2010 Study#:WP-266 ACCREDITED fsOn:ir+cv iW*,a wsue evv;s*t w Wvo Ver.1 Page 10 of 15 WP-266 2009 TNI Evaluation Final Complete Report A Waters Company Terry Powers EPA ID: CA00366 Lab Director ERA Customer Number: S586001 South Tahoe Public Utilities District Report Issued: 05/01/17 1275 Meadow Crest Dr. Study Dates: 03/13/17-04/27/17 - South Lake Tahoe,CA 96150 530-543-6231 TNI Reported Assigned Acceptance Performance Analysis Study Study Analyte Analyte Units Value Value Limits Evaluation Method Description Date Z Score Mean Standard Analyst Name Code Deviation WP Simple Nutrients(cat#584,lot#P266-505) 1.515. Ammonia;as.N mgLL 16.8. 1,3.5-19.9 Not,Reported 16.8'. . 1:16. 1820 Nitrate+Nitrite as N mg/L 20.5 21.5 18.0-24.8 Acceptable SM 4500-NO3 F-2000 3/22/2017 -1.13 21.4 0.818 Delores Trebotich 2000 .•SM 4500-NO3 F-2000 1810 Nitrate,as N ; ; mg/L 20.5. 21.5, 18..0-24.9 Acceptable ; minus SM 4500-NO2 B- 3/22/2017. 0,765 '21 A 1.22 Delores-Trebotich 2oo0,(gaic) . 1870 ortho-Phosphate as P mg/L 0.681 1 0.645 0.548-0.742 Acceptable SM 4500-P E-1999 1999 3/22/2017 1.18 0.644 0.0311 Phyllis Kunibe IMP Complex Nutrients(cat#579,lot#P266-525) 1.705 ' Total Kjeldahl Nitrogen: . mg/L 11.4. 1:1.7 8:62-"14:5., Acceptable US�GS-.03-4174. 3/24/2017" 0.00369, '11.4. , 0.781 Delores Trebotich.' 1910 Total phosphorus as P mg/L 2.34 2.19 1.77-2.59 Acceptable SM 4500-P E-1999 1999 3/22/2017 0.875 2.22 0.132 Phyllis Kunibe IMP Nitrite(cat#888,lot#P266-770) 1840. Nitrite as N :. Tv ; mg/L' ' 2:57 ' 2.4T : 2.12 2.83' Acceptable EPA 300:0�2:1 1993 3/22/2017 ..0.'605' 2,:49.' 0.137.: Phyllis Kunibe IMP Nitrite(cat#888,lot#P266-770) 5oo-N0 F-200.4222. 3' Acceptable 3/22/207 7 Deores'09480. . . Tch20001840 Nitrite,as'N mg/L 2.50; 2.47 IMP Nitrite(cat#888,lot#P266-770) 1840 Nitrite.as'N mg/L = 2.62'' 2.47 ,.' 2.12-=2.83 Acceptable' SM4b0o=NO2i3-2oo0. 3/22/201,7' 0.970• 2:49 0.137,' Phyllis.Kunibe. '2000'' . IMP Demand(cat#578,lot#P266-596) .1530, BOD ; rhg/L. 64,.1 53.8. 28A=79.5 Acceptable SM 5210 5-2001 2001; 3/26/20,17" 1,.02 ;54.4' , '9.48. PK/DT 1555 CBOD mg/L 48.7 21.6-75.8 Not Reported 49.3 8.45 1565, .COD. mg/L. 87.0 65,0-106 -Not Reported $5.9 6:37. OFAA 2040 TOC mg/L 34.4 28.4-40.3 Not Reported 34.7 2.07 SOS" " All analytes are included in ERA's A21-A accreditation.Lab Code: 1539-01 � 16341 Table Mountain Pkwy-Golden,CO 80403-800.372.0122-303.431.8454-fax 303.421.0159-www.eraqc.com StudY#:WP-266 ACCRELI9'ED .carrtrcv'csw7 exn yc. . cwrtK zr+a a:,.n: