Loading...
2015 Annual Report WATER RECLAMATION PLANT ALPINE COUNTY ANNUAL REPORT SOUTH TAHOE 45, ALi@slyer • 1950 • Vdstet`G.0 ��C UTILITY WO" SOUTH TAHOE PUBLIC UTILITY DISTRICT 2015 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 MTBE Monitoring Test Methods 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 2015 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. 2015 Annual Report 1. Compliance Record: No violations occurred during 2015 2. Wastewater Treatment Flow Information: Permits Item Flow # a. Annual peak-day dry-weather influent flow (mgd) 4.93 b Annual peak-day wet-weather influent flow and associated storm data (mgd) 4.96 c. Maximum month influent flow (mgd) 3.63 d. Annual average influent flow (mgd) 3.04 1. Sewer connection permits issued but not currently used, 20,900 45 (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. 278,400 Estimated remaining available wastewater treatment capacity 32% g. considering the influent flow estimated in 2f. (See note) Estimated influent flow parameters listed in 2a through 2d for the coming year • Annual peak-day dry-weather influent flow (mgd) 4.93 h. • Annual peak-day wet-weather influent flow and 4.96 associated storm data (mgd) • Maximum month influent flow (mgd) 3.63 • Annual average influent flow (mgd) 3.04 Note: 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. D:WnnualReports\Section CData-2015.doc WASTEWATER FLOWS 2015 Influent Effluent Month Total Max Min Ave Total Max Min Ave Jan 97.10 4.55 2.57 3.13 105.85 4.94 2.89 3.41 Feb 90.38 4.11 2.57 3.23 103.28 5.23 2.87 3.69 Mar 89.57 3.26 2.70 2.89 100.83 3.72 2.81 3.25 Arp 80.89 3.17 2.43 2.70 95.27 3.84 2.61 3.18 May 87.13 3.68 2.50 2.81 98.91 3.98 2.85 3.19 June 93.53 3.68 2.69 3.12 103.69 3.99 3.05 3.46 July 112.63 4.93 3.30 3.63 124.44 5.38 2.71 4.01 Aug 103.82 4.01 2.79 3.35 115.09 4.34 3.13 3.71 Sep 88.52 4.13 2.58 2.95 99.77 4.63 2.65 3.33 Oct 82.68 3.13 2.40 2.67 93.44 3.71 2.62 3.01 Nov 81.37 3.59 2.41 2.71 91.14 3.84 2.59 3.04 Dec 103.23 4.96 2.50 3.33 115.89 5.76 2.62 3.74 Total 1,110.85 1,247.60 Maximum 112.63 4.96 3.63 124.44 5.76 4.01 Minimum 80.89 2.40 2.67 91.14 2.59 3.01 Average 92.57 3.04 103.97 3.42 Note: Total flows in MG; Max, Min and Ave flows in MGD. Maximum Flow Report 2015 Wet Weather Maximum Influent Flow: 12/21/2015 4.96 MG Dry Weather Maximum Influent Flow: 07/04/2015 4.93 MG Influent Precipitation Date Day MG Inch Type Comments Wet Weather 12/28/2015 Mon 4.21 0.04 Snow 12/26/2015 Sat 4.26 12/27/2015 Sun 4.27 01/02/2015 Fri 4.32 12/29/2015 Tue 4.35 12/30/2015 Wed 4.48 01/01/2015 Thu 4.55 12/22/2015 Tue 4.73 0.52 Snow 12/31/2015 Thu 4.86 12/21/2015 Mon 4.96 1.62 Snow Maximum Wet Weather Flow Dry Weather 07/25/2015 Sat 3.94 07/18/2015 Sat 3.95 08/08/2015 Sat 4.01 09/06/2015 Sun 4.13 07/05/2015 Sun 4.31 0.01 Rain 07/03/2015 Fri 4.49 0.02 Rain 07/04/2015 Sat 4.93 0.11 Rain Maximum Dry Weather Flow D:\AnnualReports\Max Flow_AnnualReport-2015.xls PLANT LOADINGS for 2015 Change 2014 2015 % Influent Flow, MG 1,191.26 1,110.85 -6.75 COD (mg/I) COD (Ibs/yr) BOD (mg/I) 244 265 8.64 BOD (Ibs/yr) 2,424,994 2,456,634 1.30 SS (mg/I) 211 215 2.22 SS (Ibs/yr) 2,092,996 1,994,953 -4.68 NH3-N (mg/I) 26.11 28.28 8.30 NH3-N (Ibs/yr) 259,389 261,953 0.99 Total P (mg/I) 5.54 5.60 1.13 Total P (Ibs/yr) 55,057 51,920 -5.70 RAW INFLUENT CHARACTERISTICS for 2015 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Yearly COD Max: Min: Ave: BOD Max: 305 314 270 287 291 302 337 316 300 297 338 302 338 Min: 209 232 224 238 242 248 238 238 223 238 228 209 209 Ave: 268 259 241 254 265 274 286 275 256 268 280 256 265 SS Max: 272 247 244 246 227 268 299 253 253 281 254 244 299 Min: 175 173 168 190 164 186 194 199 176 198 178 156 156 Ave: 211 207 195 223 200 223 234 229 217 229 217 199 215 NH3-N Max: 26.9 26.7 27.5 26.5 28.7 35.5 38.4 34.8 30.3 29.1 30.5 28.5 38.4 Min: 26.0 22.6 25.1 25.5 26.7 30.4 30.7 30.6 30.2 20.3 25.0 13.1 13.1 Ave: 26.4 24.8 26.6 26.0 27.7 33.0 34.1 33.3 30.3 25.9 27.4 23.8 28.3 Total P Max: 5.86 5.57 5.42 5.44 5.65 6.08 6.40 6.44 5.87 5.73 5.64 4.95 6.44 Min: 5.45 5.20 4.97 5.06 5.44 5.76 6.22 5.89 5.79 5.54 5.46 4.84 4.84 Ave: 5.66 5.39 5.12 5.25 5.55 5.92 6.32 6.14 5.83 5.62 5.55 4.90 5.60 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 81 1,467.4 4.00 397 161 148 22.8 0.053 8.37 27.6 245 82 1,685.1 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 4.01 434 205 172 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 0.169 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 4.18 395 188 168 19.8 0.350 4.28 37.9 240 12 1,333.3 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 Maximum 1,787.4 4.88 534 265 215 28.1 1.497 8.37 42.1 268 Minimum 1,110.9 3.04 344 148 117 17.4 0.027 4.28 27.6 230 Average 1,539.4 4.21 418 188 158 21.1 0.203 5.88 35.7 249 #Years 36 36 32 36 36 36 36 36 36 36 RAW INFLUENT Influent Flows Raw Influent Annual Trends Annual Trends 8 2,400 600 7 - - - 2,100 500 6 - 1,800 p 5 - -w. -- - 1,500 400 4 ` - 1,200 m 300 - - — E < 3 900 200 ,,,r- Nioarri- 2 - 600 s•+1 1 - 300 100 -- 0 0 0 • 8081 82 83 84 8586 87 88 8990 91 92 93 94 9596 97 98 99 00 01 0203 04 9506 07 08 09 10 11 12 13 14 15 BO 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 —9—Daily Ave MGD —9—Yearly Total MG --COD --BOD Ammonia-Nitrogen Total Phosphorus Annual Trends Annual Trends 30 10 - 9 25 - 8.41 ... 720 J E 15 11 5 "ft111112 _ 4 10 3 2 1 - O 0 l 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 09 09 10 11 12 13 14 15 80 81 82 83 84 85 86 87 88 69 90 91 92 93 94 95 96 97 98 99 CO 01 02 03 04 05 06 07 OB 09 10 11 12 13 14 15 RAW INFLUENT Chlorides&TDS Chemical Oxygen Demand (COD) Annual Trends Annual Trends 100 t 400 800 90 i :360 700 -- 80 -320 600 70 - - -280 W. a 60 -.— ---- — � —240 ; 500 — E — 4s a 50 -200 E J rn .m 400 — ° 40----- - 160 o L I- 0 U 30 - ------------------------ ---------.- _-.._120 300 - - 20- -80 200 ------- 10 - __-_ -------_ :40 100 – - ----- - --------- 0: _,.TT O 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 80 818283848586 87888990 919293949596 97989900 010203040506 0708 09 10 11 12 13 14 15 t-Chlorides ---TDS —Linear(TDS) —Linear(Chlorides) Biochemical Oxygen Demand (BOD) Suspended Solids(SS) Annual Trends Annual Trends 400 300 350 — -- 250 300 - 250 200 ilIVA go. E 200 =`>.� >< ler £ 150 — _ Irrir 150 100 100 50 50 ---- -- 0 . . . . . . . . . . . . . 0 _ BO 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 07 013 09 10 11 12 13 14 15 BO 81 82 83 134 95 86 87 1313 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 OS O6 07 136 09 10 11 12 13 14 15 BIOCHEMICAL OXYGEN DEMAND UNIT PROCESS PERFORMANCE 2015 Removal Month Raw Primary Sec Final ok January 268 186 51.7 5.28 98 February 259 155 31.3 4.96 98 March 241 154 22.5 5.79 98 April 254 147 16.8 7.47 97 May 265 161 22.2 8.65 97 June 274 231 60.9 5.96 98 July 286 290 85.8 7.88 97 August 275 260 55.5 7.00 97 September 256 205 29.9 4.97 98 October 268 219 53.1 5.87 98 November 280 207 31.7 4.68 98 December 256 185 26.8 7.30 97 12 Month Ave 265 200 40.7 6.32 98 Removal 25 80 84 98 Biochemical Oxygen Demand Percent Removal 100 90 — > 80 — 0 E m e 70 0 60 50 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec — k—Final Effluent Linear(Final Effluent) SUSPENDED SOLIDS UNIT PROCESS PERFORMANCE 2015 Removal Month Raw Primary Sec Final January 211 104.3 18.8 2.21 99 February 207 105.5 13.7 2.06 99 March 195 105.7 16.7 2.65 99 April 223 125.4 12.9 2.27 99 May 200 132.5 14.8 3.37 98 June 223 118.4 14.3 2.29 99 July 234 123.6 18.5 2.81 99 August 229 123.2 18.8 3.45 98 September 217 114.0 14.8 1.97 99 October 229 101.7 16.9 2.65 99 November 217 100.6 11.9 1.80 99 December 199 126.5 18.5 5.20 97 12 Month Ave 215 115.1 15.9 2.73 99 % Removal 47 86 83 99 Suspended Solids Percent Removal 100 A A • A - - A t 90 > 80 0 E w 11 70 e 0 60 50 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec -A-Final Effluent Linear(Final Effluent) FINAL EFFLUENT ANNUAL TRENDS <--FLOW---> Total Total Daily COD BOD SS NH3-N NO3-N TKN Total-P CI 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 80 1,418.20 4.32 22.0 3.0 2.0 5.5 5.75 0.40 148 551 0.7 2.8 81 1,354.60 3.90 20.0 2.0 2.0 3.3 13.47 0.83 80 455 0.9 0.7 82 1,807.90 5.10 23.0 4.0 4.0 3.1 7.87 0.81 88 410 1.8 2.6 83 1,737.60 4.85 18.0 2.0 2.0 1.0 8.50 0.72 94 426 1.0 1.8 84 1,566.70 4.33 16.0 2.0 1.0 1.6 8.24 0.39 103 436 0.7 1.8 85 1,532.40 4.24 20.0 2.0 3.0 4.5 5.15 0.17 92 395 1.1 4.9 86 1,660.50 4.59 17.0 2.0 2.0 5.3 4.95 0.20 82 341 1.0 4.9 87 1,657.20 4.81 19.0 2.0 4.0 7.7 4.83 0.23 117 452 1.4 3.9 88 1,619.90 4.42 14.0 2.0 3.0 6.6 9.29 0.12 136 480 1.0 2.8 89 1,769.70 4.89 40.0 6.0 5.0 13.9 4.93 15.6 3.80 76 326 2.5 13.6 2.9 2.0 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 Permit Max 300 45 60 20 2401 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 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 1.9 1.8 Average 1,592.78 4.41 35.6 5.9 3.3 15.6 3.24 21.5 2.50 68 302 2.8 5.4 11.7 3.8 #Years 36 36 32 36 36 36 36 27 36 36 36 36 36 27 27 FINAL EFFLUENT Effluent Flows Chemical Oxygen Demand Annual Trends Annual Trends 10 3,000 60 9 --- 2,700 8 j 2,400 50 -- —7 — 2,100 a 6 - V — 1,800 40 — 2 5 - 1,500 y Q 4 - `mow 1,200 E 30 — 3 — - 900 20 2 — 600 -- 1 =— - — 300 10 0 " 0 80 81 82 8384 85 86 87 88 89 90 91 92 9394 95 96 97 98 99 00 01 02 03 04 05 06 07 0809 10 11 12 13 14 15 0 80 81 82 83 84 85 86 87 88899091929394959697989900010203040506070809101112131415 t Daily Ave MGD —ID--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 E 15.0 - E 15.0 10.0 - 10.0 5.0 5.0 0.0 0.0 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 9900 01 02 03 04 05 06 07 08 09 1011 12 13 1415 80 81 82 8384 8586 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 1011 12 13 14 15 FINAL EFFLUENT Ammonia-Nitrogen Total Phosphorus Annual Trends Annual Trends 30 10 - 9 _ 25 — 8 20 00•0 0 1,,„„...._,A illk 7 6 315 -a, 5 4 10 — r 3 11' 5 - 2 0 0 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 0001 02 03 04 05 06 07 08 09 10 11 12 13 14 15 80 81 82 83 84135 86 87 68 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 Nitate-Nitrogen Chlorides &TDS Annual Trends Annual Trends 20 350 700 300 —600 15 - 250— -500 . 200 ,_ . --- —400 E 13 -6). i 0 tisk m ui p 150 - ---- - --- -- - -300 e U — 100- —200 5 111111•.16 5o= 100 i 0 _ , ' . 808182838485 868788899091929344 959697989900010203 040506 0708 09101112131415 8081 82838485868788899091 929394959697989900010203040506070809101112131415 t Chlorides —0—TOS Linear(TDS) Linear(Chlorides) FINAL EFFLUENT Turbidity Total Chlorine Annual Trends Annual Trends 20 20 15 - _- - 15 J 10 - E 10ir -ler Nor 5 — — 5 111 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 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 pH Annual Trends 11 10 9 - 8 6 5 4 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 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 04/06/2011 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 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 <10 <2 <1 3 140 11/10/2015 670 0.2 25 12 <2 <2 <10 <2 1 <2 110 Annual Metals Report Final Effluent Ca Mg K Na Al 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 11/11/2014 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 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 South Tahoe PUD Biosolids Cake Metals 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 02/14/11 20110214-06 29.0% 0.7 < 0.3 < 0.3 1.9 40 1.6 0.09 1.5 1.3 < 2.0 0.4 89 Cake 05/09/11 20110510-06 27.0% 0.7 < 0.2 < 0.2 2.3 43 1.8 0.12 1.6 1.3 < 1.0 0.8 86 Cake 08/16/11 20110816-06 23.0% 0.8 < 0.3 < 0.3 2.3 52 1.8 0.10 2.7 1.0 < 2.0 0.6 130 Cake 11/09/11 20111110-08 29.0% 1.2 < 0.3 < 0.2 2.2 49 4.1 0.14 2.8 1.4 < 2.0 0.3 120 Cake 02/07/12 20120207-16 28.0% 0.6 < 0.3 < 0.3 2.0 32 1.1 0.06 1.7 1.2 < 2.0 < 0.3 80 Cake 05/15/12 20120516-06 30.0% 0.8 < 0.3 < 0.3 2.3 53 1.7 0.10 2.0 1.3 < 2.0 0.6 98 Cake 08/21/12 20120821-20 28.0% 0.6 < 0.3 < 0.3 1.8 54 1.3 0.17 1.9 1.3 < 2.0 < 0.3 99 Cake 11/13/12 20121114-08 30.0% 0.9 < 0.3 < 0.3 2.8 54 1.7 0.18 2.1 1.6 < 2.0 0.4 96 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 30.0% 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 AG38599 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 0.16 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 08/13/14 AG42401 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 11/11/14 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 Maximum 46.0% 1.4 1.0 1.0 5.0 73 8.9 0.50 5.6 5.0 3.0 3.9 250 Minimum 20.0% 0.4 0.2 0.2 0.2 32 1.0 0.06 0.6 0.9 0.7 0.3 65 Average 28.1% 0.9 0.3 0.3 2.1 50 2.2 0.16 2.3 1.5 1.7 0.7 112 #Tests 48 48 48 48 48 48 48 48 48 48 48 48 48 South Tahoe PUD Biosolids Cake Metals 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 02/14/11 20110214-06 29.0% 0.7 < 0.3 < 0.3 1.9 40 1.6 0.09 1.5 1.3 < 2.0 0.4 89 Cake 05/09/11 20110510-06 27.0% 0.7 < 0.2 < 0.2 2.3 43 1.8 0.12 1.6 1.3 < 1.0 0.8 86 Cake 08/16/11 20110816-06 23.0% 0.8 < 0.3 < 0.3 2.3 52 1.8 0.10 2.7 1.0 < 2.0 0.6 130 Cake 11/09/11 20111110-08 29.0% 1.2 < 0.3 < 0.2 2.2 49 4.1 0.14 2.8 1.4 < 2.0 0.3 120 Cake 02/07/12 20120207-16 28.0% 0.6 < 0.3 < 0.3 2.0 32 1.1 0.06 1.7 1.2 < 2.0 < 0.3 80 Cake 05/15/12 20120516-06 30.0% 0.8 < 0.3 < 0.3 2.3 53 1.7 0.10 2.0 1.3 < 2.0 0.6 98 Cake 08/21/12 20120821-20 28.0% 0.6 < 0.3 < 0.3 1.8 54 1.3 0.17 1.9 1.3 < 2.0 < 0.3 99 Cake 11/13/12 20121114-08 30.0% 0.9 < 0.3 < 0.3 2.8 54 1.7 0.18 2.1 1.6 < 2.0 0.4 96 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 30.0% 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 AG38599 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 0.16 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 08/13/14 AG42401 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 11/11/14 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 Maximum 46.0% 1.4 1.0 1.0 5.0 73 8.9 0.50 5.6 5.0 3.0 3.9 250 Minimum 20.0% 0.4 0.2 0.2 0.2 32 1.0 0.06 0.6 0.9 0.7 0.3 65 Average 28.1% 0.9 0.3 0.3 2.1 50 2.2 0.16 2.3 1.5 1.7 0.7 112 #Tests 48 48 48 48 48 48 48 48 48 48 48 48 48 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 2,168 0 100.0 1993 2,163 2 99.91 COD, Set Solids 1994 2,152. 0 100.0 1995 2,047 1 99.95 Settleable Solids 5/6/95=0.3 1996 2,064 0 100.0 1997 2,138 0 100.0 1998 2,149 0 100.0 1999 2,201 0 100.0 2000 2,110 0 100.0 2001 2,153 0 100.0 2002 2,137 0 100.0 2003 2,159 0 100.0 2004 2,078 0 100.0 2005 2,069 0 100.0 2006 2,191 0 100.0 2007 2,172 0 100.0 2008 2,159 0 100.0 2009 2,160 0 100.0 2010 2,161 0 100.0 2011 2,093 0 100.0 Stopped COD tests 06/2011 2012 2,063 0 100.0 2013 2,050 0 100.0 2014 2,054 0 100.0 2015 2,052 0 100.0 Results do not inlucde flow measurements Discharge Violations 0 0 0 0 0 � 0 0 0 # 0 0 N O(0 N N N N N N N N N N N N N N N N (0 Cr.) (O (D (0 CO 10 (D t0 (O (D (D (D (O (O (O tD (D (O O O O O O O O O O O O O O O O O O 2 w w = w w O O w (0 (D (O (O (O (D(O CO (0 (0 O O O O O O O O O O O N W A U( O J CO CO O N W A Gf " v GD (D O N W A (T O J 00 CO O N W A CT PRETREATMENT PROGRAM UPDATE PRETREATMENT ANNUAL REPORT COVER SHEET NPDES Permit Holder of Sewer Authority Name: South Tahoe Public Utility District Report Date: March 15, 2016 Period Covered by this Report: January 1, 2015 to December 31, 2015 Name of Wastewater Treatment Plant NPDES Permit Number South Tahoe Public Utility District Board Order No: R6T-2004-0010 WDIS No. 6A095900700 Person to contact concerning information contained in this report: Name: Ross Johnson Title: Plant Operations Manager Mailing Address 1275 Meadow Crest Drive South Lake Tahoe, CA 96150 Telephone No: (530) 544-6474 I 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. 3 /5 /6 D to Signature of i icial Plant Operations Manager Title ANNUAL PRETREATMENT REPORT 2015 Section 1 —Results of Wastewater Treatment Plant Sampling and Analysis The wastewater treatment pant influent, effluent and sludge were sampled November 10, 2015 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 pas-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 in table 4-A. This table indicates businesses added or deleted, and corresponding comments. Two (2) establishments are deleted because they were found to be no longer in business. Field verification and plan reviews have identified seven (7) new businesses, which are included on the table. Section 5—Annual Industrial User Site Inspection Summary There were approximately 437 on-site inspections conducted during 2015. 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 40 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 2015 Table 4-A GREASE TRAP/INTERCEPTOR&SAND/OIL INTERCEPTORS NEW NAME ADDRESS COMMENTS BEACH RETREAT 3411 LAKE TAHOE BLVD. CONFERENCE CENTER SIDELLIS 3350 SANDY WAY LITTLE LEAGUE SNACK 1180 RUFUS ALLEN RITE AID 1020 AL TAHOE NAME CHANGED NEW NAME OLD NAME BURGER STOP ,1066 EMERALD BAY ROAD BOOSTER JUICE MAYA GRILL 4041 LAKE TAHOE BLVD. WOMACK'S TAHOE BURGERS 3838 LAKE TAHOE BLVD. TAJ MAHAL LAKE TAHOE VACATION RESORT,901 SKI RUN EMBASSY VACATION RESORT GUNBARREL TAVERN 4060 LAKE TAHOE BLVD. WOLFGANG PUCK'S CHIMAYA _1142 SKI RUN BLVD. LA FAMALIA CLOSED NAME ADDRESS COMMENTS BURGER CITY 3132 HIGHWAY 50 PICHETTI WAY 3135 HARRISON ROUTE INFO How many traps/interceptors on your route? 248 How many total inspections were done? 437 How many correction notices were written? 40 SOUTH TAHOE PUBLIC UTILITY DISTRICT MEMORANDUM From The Lab Date: December 29, 2015 To: Ross Johnson, 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 November 10, 2015 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. December 29, 2015 Page 2 Metal Concentrations Sample date: November 10, 2015 Detection Drinking Raw Final Limit for Water Compound Units Influent Effluent Reporting MCL Aluminum pg/L 260 ND 50 1,000 Antimony pg/L ND ND 2 6 Arsenic pg/L 2 2 2 10 Barium pg/L 30 10 10 1,000 Beryllium pg/L ND ND 2 4 Cadmium pg/L ND ND 2 5 Calcium mg/L 19 18 0.5 Chromium mg/L ND ND 2 50 Cobalt pg/L ND ND 2 Copper pg/L 35 8 2 1,000 Iron pg/L 670 140 50 300 Lead pg/L ND ND 2 15' Magnesium mg/L 4.6 4.3 0.5 Manganese pg/L 25 18 2 50 Mercury pg/L 0.2 ND 0.1 2 Molybdenum pg/L 12 10 2 Nickel pg/L ND ND 2 100 Potassium mg/L 12 13. 0.5 Selenium pg/L ND ND 10 50 Silver pg/L ND ND 2 100 Sodium mg/L 43 53 0.5 Thallium pg/L 1 ND 1 2 Vanadium pg/L ND ND 2 Zinc pg/L 110 30 20 5,000 Notes:The sample for metals is a 24-hour flow-proportioned composite. D:\Lahontan\Priority Pollutants\Organics 2015.doc December 29, 2015 Page 3 Centrifuge Cake Metals Sample Date: November 10, 2015 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 0.9 50 500 no no no 10,00 Barium 100 16 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 0.9 50 2,500 no no no Cobalt 80 < 0.3 800 8,000 no no no Copper 25 32 250 2,500 YES no no Lead 5 1.0 50 1,000 no no no Mercury 0.2 0.08 2 20 no no no Molybdenum 350 1.6 3,500 3,500 no no no Nickel 20 1.0 200 2,000 no no no Selenium 1 < 1.5 10 100 YES no no Silver 5 < 0.3 50 500 no no no Thallium 7 < 0.03 70 700 no no no Vanadium 24 0.9 240 2,400 no no no Zinc 250 92 2,500 5,000 no no no • D:\Lahontan\Priority Pollutants\Organics 2015.doc December 29, 2015 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 November 10, 2015 Raw Final Centrifuge Influent Effluent Cake Compound pg/L pg/L pg/Kg Acetone 30 21,100 Benzoic Acid 160 bis(2-Ethylhexyl)phthalate 4 2-Butanone (MEK) 11,000 Chloroform 1 4,4'-DDD 48 4,4-DDE 34 3 and 4-Methylphenol 30 Phenol 20 Toluene 6.4 620 D:\Lahontan\Priority Pollutants\Organics 2015.doc 113(01 ��� � � 1 )5I SOUT TAHOE PUBLIC UTILITY DISTRICT CHAIN OF CUS CUSTODY South Tahoe Public Utility District cu.) Lab Sent to: ' Turnaround Time l1275 Meadow Crest Drive y ,.--,T- , /South Lake Tahoe,CA 96150 pier: D .., 1 StandardPhone:(530)-543-6231 OFAX: 530-541-4296 " "� t t, � � � I �O 24 Hr Yl/l. :»;:i :A �." ::n. 22^%y iry t':Sm;Y ^". :v'' _ 5 // ' `� ' �MIIIVIMFIrrA!f:„a�J E�2� £�n,# 35 fse,i ,� i' c�O • y 48 Hr q •< < < >. ;: z n�+- §f • Other : ,„ / , • ?:5':c.'<i "x 3 'J.:>> 1 3 2 S £moi 3 r' r < v,> r.....,., 2 w Y, $ a < ,,z.;'f .-.--• _ , 5;=.l»:x.c 3'ijj:,,,4 • , "Y u 2.Y C ' "-,,,"c,c E . 2 f Y ? � Q.Q— 5'2 ,,, ,,,,,-7:::- L c Y � z 'f � �J = ���'`�y� `' � �r T�2 : S4 41 \II �z ,> 'k'.y <,....,� .. :..t ..<,..c:.:.., ..,.'`... ,,.. ,..:?, �.r,,v.>,,.,.,c i,...-..`i�a..,..,,:,...✓ ',Li 1-3..i;,„ ..c...v..,.-.< ' I 0 * ?". "-,x C., A 2 i.y. I 4( 4 i4O R )twn up&1 .'- r� ,ff_Ia..IS.1lio M-Lit . w ,✓ a A6 Li f 71( Ft"k AV E4-0.1,1e4— dil° .1-Ie.4S 21Ri,i-Gl-`l° 3 3 A1-e- --e, kea,u rk.P114itri ii-10 -is Mki-k" Lff C 7 , aj A-ki-tf?t2 9 F--(Lds Fglitoki t2 4 `l-„Aer'4t nt o-e( -�`t�-UQ.t, ca Lev i Id-rT j- kr 4°C SiaaL V/ / - - v i Comments: 67-ill./L a Report MTBE to 0 {tg/Lany detection of MTBE a 0.2 pg/i. Relinquished by / Received by: o Analyze Travel an Field Blanks only If VOCs detected In samples. Signature L. Signature o Use Calif State Write-On form to report results of Potable Water Wets Print 7_ iQ _ ', Print 1 Company .L.iii :u•_ - t i it 'i/u,.1 Company Please Return all STPUD Ice chests & Blue Ice. Date: DIS Timed Date: _rime • i 7 a �a2 :s rr ey. �c s x ;a �„ ;.�''''',)-:;\:'‘ k f �. „r.,,. ,a>��zt.� „-k<;:,,sat�:., :w „z„�;sss�s>% Relinquished by: Received by: t Received Utah Signature lAiliff Signature _�I' _ _ Received cold Print Print • • P Custody seals Company : ,� 11111W • Correct container Date: Time Date: Time 1 kFwmslGhain or Cus�odr•doe ; },�1ke-o.d\ /�GC Page of 5��1 � llf �� � � �` � \42)) .1) � � ;....-/()N � L ENVIRONMENTAL AGRICULTURAL Analytical Chemists December 4, 2015 South Tahoe Public Utility District 1275 Meadow Crest Drive South Lake Tahoe, CA 96150 Subject: Subcontract Analysis for FGL Lab No. SP 1512679 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, Digiulty signed by Cindy Aguirre Cindy Aguirre f 1.Title:Customer Service Rep Dale:alI5-12-04 Enclosure Corporate Offices&Laboratory Office&Laboratory Office 8 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 ID el B BABCOCK Laboratories, Inc. 'Me Standard of Excellence fn O r 100 Iran Client Name: FGL Environmental, Inc. Analytical Report: Page 1 of 8 Contact: Cindy Aguirre Project Name: No Project Address: 853 Corporation Street Santa Paula, CA 93060 Project Number: SP 1512679-(2-11369) Report Date: 30-Nov-2015 Work Order Number: B5K1308 Received on Ice(Y/N): Yes Temp: 14 °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 ay Date Submitted ay B5K1308-01 SP 1512679-(2-11369)- Sludge 11/10/15 00:00 B. C. 11/13/15 10:11 Ontrac Centrifuge Cake 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 LACSD No., 10119 00 B BABCOCK Laboratories, Inc. 7hr Stand2rr/of Eve/laza In Or 100 sears Client Name: FGL Environmental, Inc. Analytical Report: Page 2 of 8 Contact: Cindy Aguirre Project Name: No Project Address: 853 Corporation Street Santa Paula, CA 93060 Project Number: SP 1512679-(2-11369) Report Date: 30-Nov-2015 Work Order Number: B5K1308 Received on Ice(YIN): Yes Temp: 14 °C Laboratory Reference Number B5K1308-01 Sample Description Matrix Sampled Date/Time Received Date/Time SP 1512679-(2-11369)-Centrifuge Cake Sludge 11/10/15 00:00 11/13/15 10:11 Analyte(s) Result RDL Units Method Analysis Date Analyst Flag Solids Total Solids 27 0.10 % SM 2540G 11/17/15 10:50 nhb Organochlorine Pesticides and PCBs by EPA 8000 Series 4,4'-DDD 48 40 ug/kg dry EPA 8081A 11/24/15 13:12 acw 4,4'-DDE 34 29 ug/kg dry EPA 8081A 11/24/15 13:12 acw 4,4'-DDT ND 44 ug/kg dry EPA 8081A 11/24/15 13:12 acw a-BHC ND 36 ug/kg dry EPA 8081A 11/24/15 13:12 acw Aldrin ND 22 ug/kg dry EPA 8081A 11/24/15 13:12 acw b-BHC ND 36 ug/kg dry EPA 8081A 11/24/15 13:12 acw Chlordane ND 270 ug/kg dry EPA 8081A 11/24/15 13:12 acw d-BHC ND 73 ug/kg dry EPA 8081A 11/24/15 13:12 acw Dieldrin ND 29 ug/kg dry EPA 8081A 11/24/15 13:12 acw Endosulfan I ND 29 ug/kg dry EPA 8081A 11/24/15 13:12 acw Endosulfan II ND 44 ug/kg dry EPA 8081A 11/24/15 13:12 acw Endosulfan Sulfate ND 110 ug/kg dry EPA 8081A 11/24/15 13:12 acw Endrin ND 29 ug/kg dry EPA 8081A 11/24/15 13:12 acw Endrin Aldehyde ND 73 ug/kg dry EPA 8081A 11/24/15 13:12 acw Heptachlor ND 26 ug/kg dry EPA 8081A 11/24/15 13:12 acw Heptachlor Epoxide ND 29 ug/kg dry EPA 8081A 11/24/15 13:12 acw Hexachlorobenzene ND 360 ug/kg dry EPA 8081A 11/24/15 13:12 acw Lindane ND 47 ug/kg dry EPA 8081A 11/24/15 13:12 acw Methoxychlor ND 290 ug/kg dry EPA 8081A 11/24/15 13:12 acw Toxaphene ND 910 ug/kg dry EPA 8081A 11/24/15 13:12 acw Aroclor 1016 ND 3600 ug/kg dry EPA 8082 11/23/15 14:26 acw Aroclor 1221 ND 3600 ug/kg dry EPA 8082 11/23/15 14:26 acw Aroclor 1232 ND 3600 ug/kg dry EPA 8082 11/23/15 14:26 acw Aroclor 1242 ND 3600 ug/kg dry EPA 8082 11/23/15 14:26 acw Aroclor 1248 ND 3600 ug/kg dry EPA 8082 11/23/15 14:26 acw Aroclor 1254 ND 3600 ug/kg dry EPA 8082 11/23/15 14:26 acw Aroclor 1260 ND 3600 ug/kg dry EPA 8082 11/23/15 14:26 acw Surrogate:Decachlorobiphenyl 98.1 % 10-158 EPA 8081A 11/24/15 13:12 acw Surrogate:Decachlorobiphenyl 116 % 10-158 EPA 8082 11/23/15 14:26 acw 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 LACSD No., 10119 B BABCOCK Laboratories, Inc. ilk Standard /1 Ar:i ienr fI a CIE rt 100 Inv Client Name: FGL Environmental, Inc. Analytical Report: Page 3 of 8 Contact: Cindy Aguirre Project Name: No Project Address: 853 Corporation Street Santa Paula, CA 93060 Project Number: SP 1512679-(2-11369) Report Date: 30-Nov-2015 Work Order Number: B5K1308 Received on Ice(Y/N): Yes Temp: 14 °C Solids - Batch Quality Control Spike Source %REC RPD Analyte(s) Result RDL Units Level Result %REC Limits RPD Limit Flag Batch 5K17080-Analyzed as received Blank(5K17080-BLK1) Prepared&Analyzed: 11/17/15 Total Solids ND 0.10 Duplicate(5K17080-DUP1) Source: B5K1308-01 Prepared&Analyzed: 11/17/15 Total Solids 27.4 0.10 % 27.4 0.146 25 Duplicate(5K17080-DUP2) Source: B5K1520-01 Prepared&Analyzed: 11/17/15 Total Solids 2.2 0.10 % 2.2 0.00 25 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 LACSD No., 10119 GO 0 B BABCOCK Laboratories, Inc. Me Standard of E Chau t"5) Ow 1(10 I iw Client Name: FGL Environmental, Inc. Analytical Report: Page 4 of 8 Contact: Cindy Aguirre Project Name: No Project Address: 853 Corporation Street Santa Paula,CA 93060 Project Number: SP 1512679-(2-11369) Report Date: 30-Nov-2015 Work Order Number: B5K1308 Received on Ice(Y/N): Yes Temp: 14 °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 5K16079-EPA 3550B Blank(5K16079-BLK1) Prepared: 11/16/15 Analyzed:11/24/15 4,4'-DDD ND 11 ug/kg wet 4,4'-DDE ND 8.0 ug/kg wet 4,4'-DDT ND 12 ug/kg wet a-BHC ND 10 ug/kg wet Aldrin ND 6.0 ug/kg wet b-BHC ND 10 ug/kg wet Chlordane ND 75 ug/kg wet d-BHC ND 20 ug/kg wet Dieldrin ND 8.0 ug/kg wet Endosulfan I ND 8.0 ug/kg wet Endosulfan II ND 12 ug/kg wet Endosulfan Sulfate ND 29 ug/kg wet Endrin ND 8.0 ug/kg wet Endrin Aldehyde ND 20 ug/kg wet Heptachlor ND 7.0 ug/kg wet Heptachlor Epoxide ND 8.0 ug/kg wet Hexachlorobenzene ND 100 ug/kg wet Lindane ND 13 ug/kg wet Methoxychlor ND 79 ug/kg wet Toxaphene ND 250 ug/kg wet Surrogate: 87 ug/kg wet 60.0 146 10-158 Decachlorobiphenyl LCS(5K16079-BS1) Prepared: 11/16/15 Analyzed: 11/24/15 4,4'-DDD 37.6 11 ug/kg wet 50.0 75.2 67.1-122 4,4'-DDE 40.3 8.0 ug/kg wet 50.0 80.6 69.9-120 4,4'-DDT 46.1 12 ug/kg wet 50.0 92.2 68.4-130 a-BHC 32.2 10 ug/kg wet 50.0 64.4 54.3-108 Aldrin 36.2 6.0 ug/kg wet 50.0 72.4 52.8-113 b-BHC 36.3 10 ug/kg wet 50.0 72.6 36.6-124 d-BHC 24.8 20 ug/kg wet 50.0 49.6 21.3-103 Dieldrin 41.1 8.0 ug/kg wet 50.0 82.3 68.5-119 Endosulfan I 39.7 8.0 ug/kg wet 50.0 79.4 64.8-127 Endosulfan II 34.3 12 ug/kg wet 50.0 68.6 64.3-127 Endrin 46.2 8.0 ug/kg wet 50.0 92.4 80.7-142 Endrin Aldehyde 29.8 20 ug/kg wet 50.0 59.7 33.8-100 Heptachlor 36.8 7.0 ug/kg wet 50.0 73.7 67.4-127 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 LACSD No., 10119 00 B BABCOCK Laboratories, Inc. The Standard,:f Tax:r/G:mtz c 1+>r the:r 100 1 w: Client Name: FGL Environmental, Inc. Analytical Report: Page 5 of 8 Contact: Cindy Aguirre Project Name: No Project Address: 853 Corporation Street Santa Paula, CA 93060 Project Number: SP 1512679-(2-11369) Report Date: 30-Nov-2015 Work Order Number: B5K1308 Received on Ice(Y/N): Yes Temp: 14 °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 5K16079-EPA 3550B LCS(5K16079-BS1) Prepared: 11/16/15 Analyzed: 11/24/15 Heptachlor Epoxide 38.2 8.0 ug/kg wet 50.0 76.3 67.4-121 Lindane 30.3 13 ug/kg wet 50.0 60.6 54.7-114 Surrogate: 70 ug/kg wet 60.0 116 10-158 Decachlorobiphenyl LCS Dup(5K16079-BSD1) Prepared: 11/16/15 Analyzed: 11/24/15 4,4'-DDD 38.7 11 ug/kg wet 50.0 77.3 67.1-122 2.74 20 4,4'-DDE 40.8 8.0 ug/kg wet 50.0 81.5 69.9-120 1.18 20 4,4'-DDT 47.9 12 ug/kg wet 50.0 95.7 68.4-130 3.73 20 a-BHC 31.8 10 ug/kg wet 50.0 63.5 54.3-108 1.32 20 Aldrin 36.2 6.0 ug/kg wet 50.0 72.3 52.8-113 0.0636 20 b-BHC 36.1 10 ug/kg wet 50.0 72.1 36.6-124 0.689 20 d-BHC 25.5 20 ug/kg wet 50.0 51.0 21.3-103 2.89 22.5 Dieldrin 41.7 8.0 ug/kg wet 50.0 83.3 68.5-119 1.26 20 Endosulfan I 40.0 8.0 ug/kg wet 50.0 80.1 64.8-127 0.899 20 Endosulfan II 34.8 12 ug/kg wet 50.0 69.6 64.3-127 1.46 20 Endrin 47.1 8.0 ug/kg wet 50.0 94.3 80.7-142 2.05 20 Endrin Aldehyde 31.1 20 ug/kg wet 50.0 62.2 33.8-100 4.08 30.9 Heptachlor 36.5 7.0 ug/kg wet 50.0 73.1 67.4-127 0.800 20 Heptachlor Epoxide 38.4 8.0 ug/kg wet 50.0 76.8 67.4-121 0.652 20 Lindane 30.3 13 ug/kg wet 50.0 60.6 54.7-114 0.0703 20 Surrogate: 75 ug/kg wet 60.0 124 10-158 Decachlorobiphenyl Matrix Spike(5K16079-MS1) Source:B5K0464-01 Prepared: 11/16/15 Analyzed: 11/24/15 4,4'-DDD 247 73 ug/kg dry 332 ND 74.2 5-169 4,4'-DDE 228 53 ug/kg dry 332 ND 68.8 20.8-133 4,4'-DDT 316 80 ug/kg dry 332 ND 95.2 5-172 a-BHC 197 66 ug/kg dry 332 ND 59.2 5-141 Aldrin 153 40 ug/kg dry 332 ND 46.0 23.1-110 b-BHC 252 66 ug/kg dry 332 ND 75.9 5-134 d-BHC 184 130 ug/kg dry 332 ND 55.4 5-106 Dieldrin 232 53 ug/kg dry 332 ND 69.7 28-137 Endosulfan I 208 53 ug/kg dry 332 ND 62.6 17.1-147 Endosulfan II 223 80 ug/kg dry 332 ND 67.0 15.9-132 Endrin 310 53 ug/kg dry 332 ND 93.2 32.1-150 Endrin Aldehyde 340 130 ug/kg dry 332 ND 102 5-102 Heptachlor 239 47 ug/kg dry 332 ND 72.1 26.4-126 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 LACSD No., 10119 00 B BABCOCK Laboratories, Inc. He Standard of1Fxcellenu /lr() r 1(N11earw Client Name: FGL Environmental, Inc. Analytical Report: Page 6 of 8 Contact: Cindy Aguirre Project Name: No Project Address: 853 Corporation Street Santa Paula, CA 93060 Project Number: SP 1512679-(2-11369) Report Date: 30-Nov-2015 Work Order Number: B5K1308 Received on Ice(Y/N): Yes Temp: 14 °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 5K16079-EPA 3550B Matrix Spike(5K16079-MS1) Source:B5K0464-01 Prepared: 11/16/15 Analyzed: 11/24/15 Heptachlor Epoxide 234 53 ug/kg dry 332 ND 70.4 28.3-122 Lindane 253 86 ug/kg dry 332 ND 76.2 6.65-134 Surrogate: 560 ug/kg dry 399 140 10-158 Decachlorobiphenyl Matrix Spike Dup(5K16079-MSD1) Source: B5K0464-01 Prepared: 11/16/15 Analyzed: 11/24/15 4,4'-DDD 226 73 ug/kg dry 332 ND 67.9 5-169 8.93 55 4,4'-DDE 212 53 ug/kg dry 332 ND 63.9 20.8-133 7.27 50 4,4'-DDT 294 80 ug/kg dry 332 ND 88.5 5-172 7.33 34 a-BHC 185 66 ug/kg dry 332 ND 55.7 5-141 6.10 60 Aldrin 165 40 ug/kg dry 332 ND 49.7 23.1-110 7.89 60 b-BHC 225 66 ug/kg dry 332 ND 67.7 5-134 11.4 60 d-BHC 170 130 ug/kg dry 332 ND 51.1 5-106 8.05 54 Dieldrin 208 53 ug/kg dry 332 ND 62.6 28-137 10.8 60 Endosulfan I 193 53 ug/kg dry 332 ND 58.1 17.1-147 7.60 59 Endosulfan II 206 80 ug/kg dry 332 ND 61.9 15.9-132 7.91 60 Endrin 272 53 ug/kg dry 332 ND 81.9 32.1-150 13.0 60 Endrin Aldehyde 335 130 ug/kg dry 332 ND 101 5-102 1.33 60 Heptachlor 223 47 ug/kg dry 332 ND 67.1 26.4-126 7.13 60 Heptachlor Epoxide 239 53 ug/kg dry 332 ND 72.0 28.3-122 2.33 60 Lindane 167 86 ug/kg dry 332 ND 50.2 6.65-134 41.1 60 Surrogate: 510 ug/kg dry 399 127 10-158 Decachlorobiphenyl Batch 5K20014-EPA 3550B Blank(5K20014-BLK1) Prepared: 11/20/15 Analyzed: 11/23/15 Aroclor 1016 ND 1000 ug/kg wet Aroclor 1221 ND 1000 ug/kg wet Aroclor 1232 ND 1000 ug/kg wet Aroclor 1242 ND 1000 ug/kg wet Aroclor 1248 ND 1000 ug/kg wet Aroclor 1254 ND 1000 ug/kg wet Aroclor 1260 ND 1000 ug/kg wet Surrogate: 369 ug/kg wet 200 185 10-158 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 LACSD No., 10119 B BABCOCK Laboratories, Inc. The Standard fir Oran 100 lirars Client Name: FGL Environmental, Inc. Analytical Report: Page 7 of 8 Contact: Cindy Aguirre Project Name: No Project Address: 853 Corporation Street Santa Paula, CA 93060 Project Number: SP 1512679-(2-11369) Report Date: 30-Nov-2015 Work Order Number: B5K1308 Received on Ice(Y/N): Yes Temp: 14 °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 5K20014-EPA 3550B LCS(5K20014-BS1) Prepared: 11/20/15 Analyzed: 11/23/15 Aroclor 1016 1590 1000 ug/kg wet 2000 79.7 47.8-122 Aroclor 1260 2030 1000 ug/kg wet 2000 102 48.3-127 Surrogate: 388 ug/kg wet 200 194 10-158 QSour Decachlorobiphenyl LCS Dup(5K20014-BSD1) Prepared: 11/20/15 Analyzed:11/23/15 Aroclor 1016 1710 1000 ug/kg wet 2000 85.4 47.8-122 6.98 20 Aroclor 1260 2200 1000 ug/kg wet 2000 110 48.3-127 7.76 20 Surrogate: 395 ug/kg wet 200 197 10-158 QSour Decachlorobiphenyl Matrix Spike(5K20014-MS1) Source: B5K1308-01 Prepared: 11/20/15 Analyzed: 11/23/15 Aroclor 1016 3040 3600 ug/kg dry 7300 ND 41.6 23-195 Aroclor 1260 3060 3600 ug/kg dry 7300 ND 42.0 13.5-134 Surrogate: 1010 ug/kg dry 730 138 10-158 Decachlorobiphenyl Matrix Spike Dup(5K20014-MSD1) Source: B5K1308-01 Prepared: 11/20/15 Analyzed: 11/23/15 Aroclor 1016 2650 3600 ug/kg dry 7300 ND 36.3 23-195 13.7 42 Aroclor 1260 3380 3600 ug/kg dry 7300 ND 46.3 13.5-134 9.80 32 Surrogate: 912 ug/kg dry 730 125 10-158 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 LACSD No., 10119 QQ B BABCOCK Laboratories, Inc. '7/t,',standard o/Elcullenee IA Ow 1000 lean Client Name: FGL Environmental, Inc. Analytical Report: Page 8 of 8 Contact: Cindy Aguirre Project Name: No Project Address: 853 Corporation Street Santa Paula, CA 93060 Project Number: SP 1512679-(2-11369) Report Date: 30-Nov-2015 Work Order Number: B5K1308 Received on Ice(Y/N): Yes Temp: 14 °C Notes and Definitions QSout Surrogate recoveries 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 */"' : NELAP does not offer accreditation for this analyte/method/matrix combination 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. Babcock Laboratories and its officers and employees assume no responsibility and make no warranty,express or implied, for uses or interpretations made by any recipients, intended or unintended,of this report. Digitally signed by:Cindy Waddell Oinef). DN:CN=Cindy Waddell C=USO= Babcock Laboratories Date:2015.12.01 18:19:10-07'00' cc: e-Standard_No Alias.rpt 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 LACSD No., 10119 00 B BABCOCK Laboratories, Inc. The Standard of'Excellence In Ozer 100 rear Client Name: FGL Environmental, Inc. Analytical Report: Page 1 of 1 Contact: Cindy Aguirre Project Name: No Project Address: 853 Corporation Street Santa Paula, CA 93060 Project Number: SP 1512679-(2-11369) Report Date: 30-Nov-2015 Work Order Number: B5K1308 Received on Ice(Y/N): Yes Temp: 14 °C Subcontract to Babcock Laboratories,Inc. Itap Rely Client:.....Fruit Grower Laboratory,Isle, v. p...._. A ltrr3,tOl.blvvoinDtigal,I . .7,853 Ci>(yniatai St. s+ Ssau Paula,CA 9340-3005 f: 1. Mute'' i5)5)t93-245Ckx5 Fat: 0E5)525 4172 .4°, 1, Camxcs prionr Cil u 3 r, Poicct M1Wk, SP 1512679-(2-11369) < r -F, N �IL19I.4['(`IPt{�Vr'�!i€AI?C/: � p �i fG 6 Itr aw ;n g L Sx arai II Ctemapt a. w E w a EP m riles 2 a. O , a C tnpSaier Setup t Fes .` t ._ Time: _ m` :+#3 ti I 7 8 .. - - v. Lab Nundw_r t n h t-c 2 , E �r Fa.E5. L L? i Lncatian Desaitsim Dale 'Fier I X, o 5 s Num Snnpkd SamPled 74 _ 2 m too IIi x __ 5 Cemrauee Cake. Mal, 08>00 C SI8 ° I - Remarks: R4eutuiaHarr. Tine: RalitiguKbed 9s : Tim RelinquishedDmTim rt. E Nl?+I ',, iqmis. )O'l( i1 l2 \s- l'1 pfd Ree I Lta : Tiny. keieived By: Date: Time. Rectit By Der Tota iii ik t A.r) 11!61IS 10'ii — i N'((;NC (7-)k,:L'1Xas:iYJ ESO 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 LACSD No., 10119 Ffit ENVIRONMENTAL AGRICULTURAL Analytical Chemists December 16, 2015 South Tahoe Public Utility District Lab ID : SP 1512679 1275 Meadow Crest Drive Customer : 2-11369 South Lake Tahoe, CA 96150 Laboratory Report Introduction: This report package contains total of 38 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 (18 pages) : Supporting Quality Control (QC)results. Case Narrative This Case Narrative pertains to the following samples: Date e Sample Description Sampled R Dat ed FGL Lab ID# Matrix Raw Influent-Grab 11/10/2015 11/12/2015 SP 1512679-001 WW Final Effluent-Grab 11/10/2015 11/12/2015 SP 1512679-002 WW Raw Influent 11/10/2015 11/12/2015 SP 1512679-003 WW Final Effluent 11/10/2015 11/12/2015 SP 1512679-004 WW Centrifuge Cake 11/10/2015 11/12/2015 SP 1512679-005 Sig 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 2 °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 11/17/2015:213431 All preparation quality controls are within established criteria,except: 3520 The following note applies to 2,4,6-Tribromophenol: 410 Relative Percent Difference(RPD)not within Maximum Allowable Value(MAV).Data was accepted based on the LCS or CCV recovery. 11/13/2015:213313 All preparation quality controls are within established criteria,except: The following note applies to Toluene-d8: 5030B 310 LCS above Acceptance Range(AR). Samples which were non detect for this analyte were accepted. The following note applies to Dibromofluromethane,Toluene-d8: 435 Sample matrix may be affecting this analyte.Data was accepted based on the LCS or CCV recovery. Page 1 of 38 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 December 16, 2015 Lab ID : SP 1512679 South Tahoe Public Utility District Customer : 2-11369 Organic QC 11/17/2015:213514 All preparation quality controls are within established criteria,except: 5030B The following note applies to Toluene-d8: 310 LCS above Acceptance Range(AR). Samples which were non detect for this analyte were accepted. 608 11/25/2015:217324 All analysis quality controls are within established criteria. 12/01/2015:217356 All analysis quality controls are within established criteria. 11/16/2015:213379 All preparation quality controls are within established criteria,except: The following note applies to Dieldrin,Heptachlor,Methoxychlor,DDD: 436 Blank Spike(BS)not within Acceptance Range(AR).Data was accepted based on the LCS or CCV recovery. The following note applies to Alpha BHC,alpha-Chlordane,Aldrin,Beta BHC,Delta BHC,Dieldrin, Endosulfan I,Endosulfan II,Endosulfan Sulfate,Endr: 410 Relative Percent Difference(RPD)not within Maximum Allowable Value(MAV).Data was accepted based on the LCS or CCV recovery. 8082 12/02/2015:216373 All analysis quality controls are within established criteria. 12/03/2015:216373 All analysis quality controls are within established criteria. 11/16/2015:213380 All preparation quality controls are within established criteria,except: The following note applies to Tetrachloro-m-xylene: 8082A 410 Relative Percent Difference(RPD)not within Maximum Allowable Value(MAV).Data was accepted based on the LCS or CCV recovery. The following note applies to PCB 1016/1242- 1,PCB 1260- 1: 320 LCS not within Acceptance Range(AR).Data was accepted based on the BS/BSD recovery. 11/13/2015:216845 All analysis quality controls are within established criteria,except: 8260B The following note applies to Bromoform: 360 CCV above Acceptance Range(AR). Samples which were non detect for this analyte were accepted. 11/17/2015:216887 All analysis quality controls are within established criteria,except: The following note applies to Acrolein,Acrylonitrile,Dibromochloromethane,Bromoform,Carbon Disulfide,Methyl tert-Butyl Ether,Vinyl Acetate: 360 CCV above Acceptance Range(AR). Samples which were non detect for this analyte were accepted. 12/15/2015:218247 All analysis quality controls are within established criteria,except: 8270C The following note applies to Dibenzofuran,Benzylalcohol,3,3-Dichlorobenzidine: 360 CCV above Acceptance Range(AR). Samples which were non detect for this analyte were accepted. 11/19/2015:213526 All preparation quality controls are within established criteria,except: The following note applies to 4-Nitrophenol: 435 Sample matrix may be affecting this analyte.Data was accepted based on the LCS or CCV recovery. The following note applies to 2-Fluorobiphenyl,2-Fluorophenol,2,4,6-Tribromophenol,2,4-Dinitrotoluene, 2-Chlorophenol,4-Nitrophenol,Acenaphthene,: 435 Sample matrix may be affecting this analyte.Data was accepted based on the LCS or CCV recovery. Page 2 of 38 December 16, 2015 Lab ID : SP 1512679 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 Terz,B.A..M.B.A. Approved By David Terz,B.A.,M.B.A. ( Tit1e:QADreclnr Dale:2015-12-16 Page 3 of 38 FOL ENVIRONMENTAL AGRICULTURAL Analytical Chemists December 16, 2015 Lab ID : SP 1512679-001 Customer ID : 2-11369 South Tahoe Public Utility District 1275 Meadow Crest Drive Sampled On : November 10, 2015-11:30 South Lake Tahoe, CA 96150 Sampled By : B. Chernago Received On : November 12, 2015-10:00 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 8260vuA:1.3 4-Bromofluorobenzene 106 79-119 % 5030B 11/13/15:213313 8260B 11/13/15:216845 Dibromofluoromethane$ 133 84-136 % 5030B 11/13/15:213313 8260B 11/13/15:216845 1,2-Dichloroethane-d4$ 128 58-166 % 5030B 11/13/15:213313 8260B 11/13/15:216845 To1uene-d8$ 126 88-111 % 5030B II/13/15:213313 8260B 11/13/15:216845 Acetone 30 10 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 Acrolein ND 100 ug/L 5030B II/13/15:213313 8260B 11/13/15:216845 Acrylonitrile ND 100 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 Benzene ND 0.5 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 Bromobenzene ND 1 ug/L 50308 11/13/15:213313 8260B 11/13/15:216845 Bromochloromethane ND 1 ug/L 5030B 11/13/15:213313 82608 11/13/15:216845 Bromodichloromethane ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 Bromoform ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 Bromomethane ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 tert-Butanol ND 5 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 2-Butanone(MEK) ND 10 ug/L 50308 11/13/15:213313 82608 11/13/15:216845 n-Butylbenzene ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 sec-Butylbenzene ND 1 ug/L 50308 11/13/15:213313 8260B 11/13/15:216845 tert-Butylbenzene ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 Carbon Disulfide ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 Carbon Tetrachloride ND 1 ug/L 50308 11/13/15:213313 8260B 11/13/15:216845 Chlorobenzene ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 Chloroethane ND 1 ug/L 50308 11/13/15:213313 8260B 11/13/15:216845 Chloroform 1 1 ug/L 50308 11/13/15:213313 8260B 11/13/15:216845 Chloromethane ND 1 ug/L 50308 11/13/15:213313 8260B 11/13/15:216845 2-Chlorotoluene ND 1 ug/L 50308 11/13/15:213313 8260B 11/13/15:216845 4-Chlorotoluene ND 1 ug/L 50308 11/13/15:213313 82608 11/13/15:216845 Dibromochloromethane ND 2 ug/L 50308 11/13/15:213313 8260B 11/13/15:216845 Dibromomethane ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 1,2-Dichlorobenzene ND 1 ug/L 50308 11/13/15:213313 82608 11/13/15:216845 1,3-Dichlorobenzene ND 1 ug/L 50308 11/13/15:213313 82608 11/13/15:216845 1,4-Dichlorobenzene ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 Dichlorodifluoromethane ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 1,1-Dichloroethane ND 1 ug/L 5030B 11/13/15:213313 82608 11/13/15:216845 1,2-Dichloroethane ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 I 1,1-Dichloroethylene ND 1 ug/L 5030B 11/13/15:213313 82608 11/13/15:216845 Page 4 of 38 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 December 16, 2015 Lab ID : SP 1512679-001 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 8260v0n:1'3 cis-I,2-Dichloroethylene ND 1 ug/L 5030B 11/13/15:213313 82600 11/13/15:216845 trans-1,2-Dichloroethylene ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 1,2-Dichloropropane ND 1 ug/L 5030B 11/13/15:213313 82608 11/13/15:216845 1,3-Dichloropropane ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 2,2-Dichloropropane ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 1,1-Dichloropropene ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 cis-1,3-Dichloropropene ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 trans-1,3-Dichloropropene ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 Di-isopropyl ether(DIPE) ND 0.5 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 Ethyl Benzene ND 0.5 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 Ethyl tert-butyl ether ND 0.5 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 (ETRE) C' Hexachlorobutadiene ND 1 ug/L 5030B I1/13/15:213313 8260B 11/13/15:216845 2-Hexanone ND 10 ug/L 5030E 11/13/15:213313 8260B 11/13/15:216845 Isopropylbenzene ND 1 ug/L 5030B I1/13/15:213313 8260B 11/13/15:216845 p-Isopropyltoluene ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 Methyl tert-butyl ether ND 0.2 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 (MTBE) 5 4-Methyl 2 pentanone ND 10 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 (MIRK) Methylene Chloride ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 Naphthalene ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 n-Propylbenzene ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 Styrene ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 tett Amyl methyl ether ND 0.5 u„/L 5030B 11/13/15:213313 82608 11/13/15:216845 (TAME) 5 1,1,1,2-Tetrachloroethane ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 1,1,2,2-Tetrachloroethane ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 Tetrachloroethylene ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 Toluene 6.4 0.5 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 1,2,3-Trichlorobenzene ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 1,2,4-Trichlorobenzene ND 1 ug/L 5030B II/13/15:213313 8260B 11/I3/15:2I6845 1,1,1-Trichloroethane ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 1,1,2-Trichloroethane ND 1 ug/L 50308 11/13/15:213313 8260B 11/13/15:216845 Trichloroethylene ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 Trichlorofluoromethane ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 1,2,4-Trimethylbenzene ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 1,3,5-Trimethylbenzene ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 Vinyl Acetate ND 100 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 Vinyl Chloride ND 1 ug/L 50308 11/13/15:213313 8260B Il/13/15:216845 Xylenes ND -- ug/L 5030B 11/13/15:213313 82608 11/13/15:216845 Xylenes m,p ND 0.5 ug/L 50308 11/13/15:213313 8260B 11/13/15:216845 Page 5 of 38 December 16, 2015 Lab ID : SP 1512679-001 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 8260v0A:r3 Xylenes o _ ND 0.5 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 ND=Non-Detected.PQL=Practical Quantitation Limit.Containers:(AGT)Amber Glass TFE-Cap,(G)Glass Jar,(VOA)VOA Preservatives:HCI pH<2 $Surrogate.*PQL adjusted for dilution. Page 6 of 38 FGL ENVIRONMENTAL = AGRICULTURAL Analytical Chemists December 16, 2015 Lab ID : SP 1512679-002 Customer ID : 2-11369 South Tahoe Public Utility District 1275 Meadow Crest Drive Sampled On : November 10, 2015-11:25 South Lake Tahoe, CA 96150 Sampled By : B. Chernago Received On : November 12, 2015-10:00 Matrix : Waste Water Description : Final Effluent-Grab Project : Priority Pollutants Sample Result-Organic Constituent Result PQL Units Note Sample Preparation Sample Analysis Method Date/ID Method Date/ID EPA 8260v0A:13 4-Bromofluorobenzene 109 79-119 % 5030B 11/13/15:213313 82608 11/13/15:216845 Dibromofluoromethane$ 133 84-136 % 5030e 11/13/15:213313 8260B 11/13/15:216845 1,2-Dichloroethane-d4$ 126 58-166 % 5030B 11/13/15:213313 8260B 11/13/15:216845 Toluene-d80 125 88-111 % 5030B 11/13/15:213313 8260B 11/13/15:216845 Acetone ND 10 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 Acrolein ND 100 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 Acrylonitrile ND 100 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 Benzene ND 0.5 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 Bromobenzene ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 Bromochloromethane ND 1 ug/L 503013 11/13/15:213313 8260B 11/13/15:216845 Bromodichloromethane ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 Bromoform ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 Bromomethane ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 tert-Butanol ND 5 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 2-Butanone(MEK) ND 10 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 n-Butylbenzene ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 sec-Butylbenzene ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 tert-Butylbenzene ND 1 ug/L 5030B Il/13/15:213313 8260E 11/13/15:216845 Carbon Disulfide ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 Carbon Tetrachloride ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 Chlorobenzene ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 Chloroethane ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 Chloroform ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 Chloromethane ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 2-Chlorotoluene ND 1 ug/L 5030B Il/13/15:213313 8260B 11/13/15:216845 4-Chlorotoluene ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 Dibromochloromethane ND 2 ug/L 50308 11/13/15:213313 8260B 11/13/15:216845 Dibromomethane ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 1,2-Dichlorobenzene ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 1,3-Dichlorobenzene ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 1,4-Dichlorobenzene ND 1 ug/L 5030B 11/13/15:213313 82606 11/13/15:216845 Dichlorodifluoromethane ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 1,1-Dichloroethane ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 1,2-Dichloroethane ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 1,1-Dichloroethylene ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 Page 7 of 38 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 December 16, 2015 Lab ID : SP 1512679-002 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 826O"OA:r3 cis-1,2-Dichloroethylene ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 trans-1,2-Dichloroethylene ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 1,2-Dichloropropane ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 1,3-Dichloropropane ND 1 ug/L 50308 11/13/15:213313 8260B 11/13/15:216845 2,2-Dichloropropane ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 1,1-Dichloropropene ND 1 ug/L 50308 11/13/15:213313 8260B 11/13/15:216845 cis-1,3-Dichloropropene ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 trans-1,3-Dichloropropene ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 Di-isopropyl ether(DIPE) ND 0.5 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 Ethyl Benzene ND 0.5 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 Ethyl tert-butyl ether ND 0.5 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 (ETRE) 5 Hexachlorobutadiene ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 2-Hexanone ND 10 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 Isopropylbenzene ND 1 ug/L 5030B 11/13/15:213313 82608 11/13/15:216845 p-Isopropyltoluene ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 Methyl ter(butyl ether ND 0.2 ug/L 5030B 11/13/15:213313 82608 11/13/15:216845 (MTBE) 4 Methyl 2 pentanone ND 10 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 (MIRK) b 1 Methylene Chloride ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 Naphthalene ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 n-Propylbenzene ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 Styrene ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 ter(Amyl methyl ether ND 0.5 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 (TAME) 1,1,1,2-Tetrachloroethane ND 1 ug/L 503013 11/13/15:213313 8260B 11/13/15:216845 1,1,2,2-Tetrachloroethane ND 1 ug/L 5030B 11/13/15:213313 8260E 11/13/15:216845 Tetrachloroethylene ND 1 ug/L 50308 11/13/15:213313 8260B 11/13/15:216845 Toluene ND 0.5 ug/L 50308 11/13/15:213313 8260B 11/13/15:216845 1,2,3-Trichlorobenzene ND 1 ug/L 50308 11/13/15:213313 8260B 11/13/15:216845 1,2,4-Trichlorobenzene ND 1 ug/L 5030B 11/13/15:213313 82608 11/13/15:216845 ' 1,1,1-Trichloroethane ND 1 ug/L 5030B 11/13/15:213313 826013 11/13/15:216845 1,1,2-Trichloroethane ND 1 ug/L 5030B 11/13/15:213313 82608 11/13/15:216845 Trichloroethylene ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 Trichlorofluoromethane ND 1 ug/L 50308 11/13/15:213313 8260B 11/13/15:216845 1,2,4-Trimethylbenzene ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 1,3,5-Trimethylbenzene ND 1 ug/L 503013 11/13/15:213313 8260B 11/13/15:216845 Vinyl Acetate ND 100 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 Vinyl Chloride ND 1 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 Xylenes ND -- ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 Xylenes m,p ND 0.5 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 Page 8 of 38 December 16, 2015 Lab ID : SP 1512679-002 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 8260v0A:r3 Xylenes o ND 0.5 ug/L 5030B 11/13/15:213313 8260B 11/13/15:216845 ND=Non-Detected.PQL=Practical Quantitation Limit.Containers:(AGT)Amber Glass TFE-Cap,(G)Glass Jar,(VOA)VOA Preservatives:HCI pH<2 $Surrogate.*PQL adjusted for dilution. Page 9 of 38 FG ENVIRONMENTAL - AGRICULTURAL Analytical Chemists December 16, 2015 Lab ID : SP 1512679-003 Customer ID : 2-11369 South Tahoe Public Utility District 1275 Meadow Crest Drive Sampled On : November 10, 2015-00:00 South Lake Tahoe, CA 96150 Sampled By : Ops Received On : November 12, 2015-10:00 Matrix : Waste Water Description : Raw Influent Project : Priority Pollutants Sample Result-Organic Constituent Result PQL Units Note Sample Preparation Sample Analysis Method Date/ID Method Date/ID EPA 8081A°T:1 Tetrachloro-m-xylene$ 31.1 15-143 % 608 11/16/15:213379 608 11/25/15:217324 Aldrin ND 0.05 ug/L 608 11/16/15:213379 608 11/25/15:217324 Alpha BHC ND 0.05 ug/L 608 11/16/15:213379 608 11/25/15:217324 Beta BHC ND 0.05 ug/L 608 11/16/15:213379 608 11/25/15:217324 Delta BHC ND 0.05 ug/L 608 11/16/15:213379 608 11/25/15:217324 Gamma BHC(Lindane) ND 0.05 ug/L 608 11/16/15:213379 608 11/25/15:217324 Chlordane ND 2 ug/L 608 11/16/15:213379 608 11/25/15:217324 alpha-Chlordane ND 0.05 ug/L 608 11/16/15:213379 608 11/25/15:217324 gamma-Chlordane ND 0.05 ug/L 608 11/16/15:213379 608 11/25/15:217324 4,4-DDD ND 0.05 ug/L 608 11/16/15:213379 608 12/01/15:217356 4,4-DDE ND 0.05 ug/L 608 11/16/15:213379 608 11/25/15:217324 4,4-DDT ND 0.05 ug/L 608 11/16/15:213379 608 12/01/15:217356 Dieldrin ND 0.05 ug/L 608 11/16/15:213379 608 11/25/15:217324 Endosulfan I ND 0.05 ug/L 608 11/16/15:213379 608 11/25/15:217324 Endosulfan II ND 0.05 ug/L 608 11/16/15:213379 608 11/25/15:217324 Endosulfan Sulfate ND 0.05 ug/L 608 11/16/15:213379 608 11/25/15:217324 Endrin ND 0.05 ug/L 608 11/16/15:213379 608 11/25/15:217324 Endrin Aldehyde ND 0.05 ug/L 608 11/16/15:213379 608 11/25/15:217324 Endrin Ketone ND 0.05 ug/L 608 11/16/15:213379 608 11/25/15:217324 Heptachlor ND 0.05 ug/L 608 11/16/15:213379 608 11/25/15:217324 Heptachlor Epoxide ND 0.05 ug/L 608 11/16/15:213379 608 11/25/15:217324 Methoxychlor ND 0.1 ug/L 608 11/16/15:213379 608 11/25/15:217324 Toxaphene ND 0.5 ug/L 608 11/16/15:213379 608 11/25/15:217324 EPA 8082ACT:1 Tetrachloro-m-xy1ene' 9.4 26-102 % 8082A 11/16/15:213380 8082 12/02/15:216373 PCB 1016/1242 ND 0.5 ug/L 8082A 11/16/15:213380 8082 12/02/15:216373 PCB 1221 ND 0.5 ug/L 8082A 11/16/15:213380 8082 12/02/15:216373 PCB 1 232 ND 0.5 ug/L 8082A 11/16/15:213380 8082 12/02/15:216373 PCB 1248 ND 0.5 ug/L 8082A 11/16/15:213380 8082 12/02/15:216373 PCB 1254 ND 0.5 ug/L 8082A 11/16/15:213380 8082 12/02/15:216373 PCB 1 260 ND 0.5 ug/L 8082A 11/16/15:213380 8082 12/02/15:216373 PCB 1 242 ND 0.5 ug/L 8082A 11/16/15:213380 8082 12/02/15:216373 EPA 8270A6T:1 2-Fluorobipheny1' 31.0 26-97 % 3520 11/17/15:213431 8270C 12/15/15:218247 2-Fluoropheno1$ 36.4 0-114 % 3520 11/17/15:213431 8270C 12/15/15:218247 Page 10 of 38 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 December 16, 2015 Lab ID : SP 1512679-003 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 8270Aur'I Nitrobenzene-d51 43.1 22-92 % 3520 11/17/15:213431 8270C 12/15/15:218247 Phenol-d6 37.2 0-105 % 3520 11/17/15:213431 8270C 12/15/15:218247 p-Terpheny1-d141 15.5 20-118 % 3520 (1/17/15:213431 8270C 12/15/15:218247 2,4,6-Tribromophenol$ 45.6 0-133 % 3520 1(/17/15:213431 8270C 12/15/15:218247 Acenaphthene ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Acenaphthylene ND 10 ug/L 3520 I1/17/15:213431 8270C 12/15/15:218247 Aniline ND 20 ug/L 3520 II/17/15:213431 8270C 12/15/15:218247 Anthracene ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 1,2-Diphenylhydrazine ND 50 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Benzidine ND 50 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Benzo(a)anthracene ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Benzo(b)fluoranthene ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Benzo(k)fluoranthene ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Benzo(g,h,i)perylene ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Benzo(a)pyrene ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Benzoic Acid 160 20 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Benzylalcohol ND 20 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 4-Bromophenyiphenylether ND 10 ug/L 3520 (1/17/15:213431 8270C 12/15/15:218247 Butylbenzylphthalate ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 b1S(2- ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Chloroethoxy)methane 6 bis(2-Chloroethyl)ether ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 bis(2-Chloroisopropyl)ether ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 bis(2-Ethylhexyl)phthalate ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 4-Chloroaniline ND 20 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 4-Chloro-3-methylphenol ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 2-Chloronaphthalene ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 2-Chlorophenol ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 4-Chlorophenylphenylether ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Chrysene ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Dibenzo(a,h)anthracene ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Dibenzofuran ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Di-n-butylphthalate ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 1,2-Dichlorobenzene ND 10 ug/L 3520 1(/17/15:213431 8270C 12/15/15:218247 1,3-Dichlorobenzene ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 1,4-Dichlorobenzene ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 3,3'-Dichlorobenzidine ND 20 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 2,4-Dichlorophenol ND 10 ug/L 3520 1(/17/15:213431 8270C 12/15/15:218247 ,Diethzlzhthalate ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Page 11 of 38 December 16, 2015 Lab ID : SP 1512679-003 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 8270A61:1 2,4-Dimethylphenol ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Dimethylphthalate ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 4,6-Dinitro-2-methylphenol ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 I2,4-Dinitrophenol ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 I2,4-Dinitrotoluene ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 2,6-Dinitrotoluene ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 I Di-n-octylphthalate ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Fluoranthene ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Fluorene ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 I Hexachlorobenzene ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Hexachlorobutadiene ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Hexachlorocyclopentadiene ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Hexachloroethane ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Indeno(1,2,3-c,d)pyrene ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Isophorone ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 2-Methylnaphthalene ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 I2-Methylphenol ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 3 and 4-Methylphenol 30 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Naphthalene ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 2-Nitroanaline ND 20 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 3-Nitroanaline ND 20 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 4-Nitroanaline ND 20 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Nitrobenzene ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 1 2-Nitrophenol ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 4-Nitrophenol ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 I N-Nitrosodimethylamine ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 N-Nitrosodiphenylamine ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 N-Nitrosodi-n-propylamine ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 I1 Pentachlorophenol ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Phenanthrene ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Phenol 20 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Pyrene ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 1,2,4-Trichlorobenzene ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 2,4,5-Trichlorophenol ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 12,4,6-Trichlorophenol ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 ,Pyridine ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 ND—Non-Detected.PQL=Practical Quantitation Limit.Containers:(AGT)Amber Glass TFE-Cap,(G)Glass Jar,(VOA)VOA Preservatives:HCI pH<2 :Surrogate.*PQL adjusted for dilution. Page 12 of 38 FfiL ENVIRONMENTAL - AGRICULTURAL Analytical Chemists December 16, 2015 Lab ID : SP 1512679-004 Customer ID : 2-11369 South Tahoe Public Utility District 1275 Meadow Crest Drive Sampled On : November 10, 2015-00:00 South Lake Tahoe, CA 96150 Sampled By : Ops Received On : November 12, 2015-10:00 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 8081AG1:1 Tetrachloro-m-xylene1 48.7 15-143 % 608 11/16/15:213379 608 11/25/15:217324 Aldrin ND 0.05 ug/L 608 11/16/15:213379 608 11/25/15:217324 Alpha BHC ND 0.05 ug/L 608 11/16/15:213379 608 11/25/15:217324 Beta BHC ND 0.05 ug/L 608 11/16/15:213379 608 11/25/15:217324 Delta BHC ND 0.05 ug/L 608 11/16/15:213379 608 11/25/15:217324 Gamma BHC(Lindane) ND 0.05 ug/L 608 11/16/15:213379 608 11/25/15:217324 Chlordane ND 2 ug/L 608 11/16/15:213379 608 11/25/15:217324 alpha-Chlordane ND 0.05 ug/L 608 11/16/15:213379 608 11/25/15:217324 gamma-Chlordane ND 0.05 ug/L 608 11/16/15:213379 608 11/25/15:217324 4,4-DDD ND 0.05 ug/L 608 11/16/15:213379 608 11/25/15:217324 4,4-DDE ND 0.05 ug/L 608 11/16/15:213379 608 11/25/15:217324 4,4-DDT ND 0.05 ug/L 608 11/16/15:213379 608 12/01/15:217356 Dieldrin ND 0.05 ug/L 608 11/16/15:213379 608 11/25/15:217324 Endosulfan I ND 0.05 ug/L 608 11/16/15:213379 608 11/25/15:217324 Endosulfan II ND 0.05 ug/L 608 11/16/15:213379 608 11/25/15:217324 Endosulfan Sulfate ND 0.05 ug/L 608 11/16/15:213379 608 11/25/15:217324 Endrin ND 0.05 ug/L 608 11/16/15:213379 608 11/25/15:217324 Endrin Aldehyde ND 0.05 ug/L 608 11/16/15:213379 608 11/25/15:217324 Endrin Ketone ND 0.05 ug/L 608 11/16/15:213379 608 11/25/15:217324 Heptachlor ND 0.05 ug/L 608 11/16/15:213379 608 11/25/15:217324 Heptachlor Epoxide ND 0.05 ug/L 608 11/16/15:213379 608 11/25/15:217324 Methoxychlor ND 0.1 ug/L 608 11/16/15:213379 608 11/25/15:217324 Toxaphene ND 0.5 ug/L 608 11/16/15:213379 608 11/25/15:217324 EPA 8082AUT:1 Tetrachloro-m-xylene1 38.9 26-102 % 8082A 11/16/15:213380 8082 12/03/15:216373 PCB 1016/1242 ND 0.5 ug/L 8082A 11/16/15:213380 8082 12/03/15:216373 PCB 1221 ND 0.5 ug/L 8082A 11/16/15:213380 8082 12/03/15:216373 PCB 1232 ND 0.5 ug/L 8082A 11/16/15:213380 8082 12/03/15:216373 PCB 1 248 ND 0.5 ug/L 8082A 11/16/15:213380 8082 12/03/15:216373 PCB 1254 ND 0.5 ug/L 8082A 11/16/15:213380 8082 12/03/15:216373 PCB 1260 ND 0.5 ug/L 8082A 11/16/15:213380 8082 12/03/15:216373 PCB 1242 ND 0.5 ug/L 8082A 11/16/15:213380 8082 12/03/15:216373 EPA 8270AG 1:I 2-Fluorobiphen0 42.0 26-97 % 3520 11/17/15:213431 8270C 12/15/15:218247 2-Fluorophenol$ 37.8 0-114 % 3520 11/17/15:213431 8270C 12/15/15:218247 Page 13 of 38 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 December 16,2015 Lab ID : SP 1512679-004 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 8270ACT:1 Nitrobenzene-d51 47.0 22-92 % 3520 11/17/15:213431 8270C 12/15/15:218247 Phenol-d6# 35.6 0-105 % 3520 11/17/15:213431 8270C 12/15/15:218247 p-Terphenyl-d14# 23.4 20-118 % 3520 11/17/15:213431 8270C 12/15/15:218247 2,4,6-Tribromophenol 64.2 0-133 % 3520 11/17/15:213431 8270C 12/15/15:218247 Acenaphthene ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Acenaphthylene ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Aniline ND 20 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Anthracene ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 1 1,2-Diphenylhydrazine ND 50 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Benzidine ND 50 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Benzo(a)anthracene ND 10 ug/L 3520 11/17/15:213431 82700 12/15/15:218247 Benzo(b)fluoranthene ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Benzo(k)fluoranthene ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Benzo(g,h,i)perylene ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Benzo(a)pyrene ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 1 Benzoic Acid ND 20 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Benzylalcohol ND 20 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 4-Bromophenylphenylether ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Butylbenzylphthalate ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 b1S(2- ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Chloroethoxy)methane bis(2-Chloroethyl)ether ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 bis(2-Chloroisopropyl)ether ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 bis(2-Ethylhexyl)phthalate ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 4-Chloroaniline ND 20 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 4-Chloro-3-methylphenol ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 2-Chloronaphthalene ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 2-Chlorophenol ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 4-Chlorophenylphenylether ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Chrysene ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Dibenzo(a,h)anthracene ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Dibenzofuran ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Di-n-butylphthalate ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 1,2-Dichlorobenzene ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 1,3-Dichlorobenzene ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 1,4-Dichlorobenzene ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 3,3'-Dichlorobenzidine ND 20 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 2,4-Dichlorophenol ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Diethylphthalate ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Page 14 of 38 December 16, 2015 Lab ID : SP 1512679-004 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 8270AG1'1 2,4-Dimethylphenol ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Dimethylphthalate ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 4,6-Dinitro-2-methylphenol ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 2,4-Dinitrophenol ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 2,4-Dinitrotoluene ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 2,6-Dinitrotoluene ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Di-n-octylphthalate ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Fluoranthene ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Fluorene ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Hexachlorobenzene ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Hexachlorobutadiene ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Hexachlorocyclopentadiene ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Hexachloroethane ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Indeno(1,2,3-c,d)pyrene ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Isophorone ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 2-Methylnaphthalene ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 2-Methylphenol ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 3-and 4-Methylphenol ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Naphthalene ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 2-Nitroanaline ND 20 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 3-Nitroanaline ND 20 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 4-Nitroanaline ND 20 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Nitrobenzene ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 2-Nitrophenol ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 4-Nitrophenol ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 N-Nitrosodimethylamine ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 N-Nitrosodiphenylamine ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 N-Nitrosodi-n-propylamine ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Pentachlorophenol ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Phenanthrene ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Phenol ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Pyrene ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 1,2,4-Trichlorobenzene ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 2,4,5-Trichlorophenol ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 2,4,6-Trichlorophenol ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 Pyridine ND 10 ug/L 3520 11/17/15:213431 8270C 12/15/15:218247 ND=Non-Detected.PQL=Practical Quantitation Limit.Containers:(AGT)Amber Glass TFE-Cap,(G)Glass Jar,(VOA)VOA Preservatives:HCl pH<2 $Surrogate.*PQL adjusted for dilution. Page 15 of 38 FGL ENVIRONMENTAL -:---= AGRICULTURAL Analytical Chemists December 16, 2015 Lab ID : SP 1512679-005 Customer ID : 2-11369 South Tahoe Public Utility District 1275 Meadow Crest Drive Sampled On : November 10, 2015-00:00 South Lake Tahoe, CA 96150 Sampled By : Ops Received On : November 12,2015-10:00 Matrix : Sludge Description : Centrifuge Cake Project : Priority Pollutants Sample Result-Organic Constituent Result PQL Units Note Sample Preparation Sample Analysis Method Date/ID Method Date/ID EPA 8260G:1 4-Bromofluorobenzenet 88.8 75-146* % 5030B 11/17/15:213514 82606 11/17/15:216887 Dibromofluoromethane$ 104 59-166* % 5030B 11/17/15:213514 82606 11/17/15:216887 1,2-Dichloroethane-d4$ 100 49-169* % 50309 11/17/15:213514 82606 11/17/15:216887 Toluene-d81 93.2 78-119* % 50306 11/17/15:213514 82608 11/17/15:216887 Acetone 21100 3200* ug/kg 50306 11/17/15:213514 82608 11/17/15:216887 Acrolein ND 3200* ug/kg 50308 11/17/15:213514 8260B 11/17/15:216887 Acrylonitrile ND 3200* ug/kg 5030B 11/17/15:213514 82606 11/17/15:216887 Benzene ND 160* ug/kg 50306 11/17/15:213514 82606 11/17/15:216887 Bromobenzene ND 160* ug/kg 50308 11/17/15:213514 8260B 11/17/15:216887 Bromochloromethane ND 160* ug/kg 50306 11/17/15:213514 8260B 11/17/15:216887 Bromodichloromethane ND 160* ug/kg 50308 11/17/15:213514 8260E 11/17/15:216887 Bromoform ND 160* ug/kg 50306 11/17/15:213514 8260B 11/17/15:216887 Bromomethane ND 320* ug/kg 50306 11/17/15:213514 8260E 11/17/15:216887 tert-Butanol ND 640* ug/kg 50306 11/17/15:213514 82609 11/17/15216887 2-Butanone(MEK) 11000 800* ug/kg 5030E 11/17/15:213514 8260B 11/17/15:216887 n-Butylbenzene ND 160* ug/kg 5030E 11/17/15:213514 8260B 11/17/15:216887 sec-Butylbenzene ND 160* ug/kg 5030E 11/17/15:213514 8260B 11/17/15:216887 tert-Butylbenzene ND 160* ug/kg 50309 11/17/15:213514 82606 11/17/15:216887 Carbon Disulfide ND 800* ug/kg 5030E 11/17/15:213514 82606 11/17/15:216887 Carbon Tetrachloride ND 160* ug/kg 5030E 11/17/15:213514 8260B 11/17/15:216887 Chlorobenzene ND 160* ug/kg 5030B 11/17/15:213514 8260B 11/17/15:216887 Chloroethane ND 320* ug/kg 50309 11/17/15:213514 82606 11/17/15:216887 Chloroform ND 160* ug/kg 5030E 11/17/15:213514 8260B 11/17/15:216887 Chloromethane ND 320* ug/kg 5030E 11/17/15:213514 8260B 11/17/15:216887 2-Chlorotoluene ND 160* ug/kg 5030B 11/17/15:213514 8260B 11/17/15:216887 ' 4-Chlorotoluene ND 160* ug/kg 5030E 11/17/15:213514 82606 11/17/15:216887 Dibromochloromethane ND 160* ug/kg 5030E 11/17/15:213514 82606 11/17/15:216887 Dibromomethane ND 160* ug/kg 5030B 11/17/15:213514 8260B 11/17/15:216887 1,2-Dichlorobenzene ND 160* ug/kg ! 5030B 11/17/15:213514 82606 11/17/15:216887 1,3-Dichlorobenzene ND 160* ug/kg 50306 11/17/15:213514 82608 11/17/15:216887 1,4-Dichlorobenzene ND 160* ug/kg 5030E 11/17/15:213514 82606 11/17/15:216887 Dichlorodifluoromethane ND 320* ug/kg 50308 11/17/15:213514 82606 11/17/15:216887 ' 1,I-Dichloroethane ND 160* ug/kg 50308 11/17/15:213514 8260B 11/17/15:216887 1,2-Dichloroethane ND 160* ug/kg 5030B 11/17/15:213514 8260E 11/17/15:216887 1,1-Dichloroethylene ND 160* ug/kg 50309 11/17/15:213514 8260B 11/17/15:216887 Page 16 of 38 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 December 16, 2015 Lab ID : SP 1512679-005 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 82606:1 cis-1,2-Dichloroethylene ND 160* ug/kg 5030B 11/17/15:213514 82608 11/17/15:216887 trans-1,2-Dichloroethylene ND 160* ug/kg 5030B 11/17/15:213514 8260B 11/17/15:216887 1,2-Dichloropropane ND 160* ug/kg 5030B 11/17/15:213514 82608 11/17/15:216887 1,3-Dichloropropane ND 160* ug/kg 5030B 11/17/15:213514 8260B 11/17/15:216887 2,2-Dichloropropane ND 160* ug/kg 5030B 11/17/15:213514 8260B 11/17/15:216887 1,1-Dichloropropene ND 160* ug/kg 5030B 11/17/15:213514 82608 11/17/15:216887 I cis-1,3-Dichloropropene ND 160* ug/kg 5030B 11/17/15:213514 8260B 11/17/15:216887 trans-1,3-Dichloropropene ND 160* ug/kg 5030B 11/17/15:213514 8260B 11/17/15:216887 Di-isopropyl ether(DIPE) ND 160* ug/kg 5030B 11/17/15:213514 8260B 11/17/15:216887 Ethyl Benzene ND 160* ug/kg 5030B 11/17/15:213514 8260B 11/17/15:216887 Ethyl tert-butyl ether ND 160* ug/kg 5030B 11/17/15:213514 8260B 11/17/15:216887 (ETRE) Hexachlorobutadiene ND 160* ug/kg 5030B 11/17/15:213514 8260B 11/17/15:216887 2-Hexanone ND 800* ug/kg 5030B 11/17/15:213514 8260B 11/17/15:216887 Isopropylbenzene ND 160* ug/kg 5030B 11/17/15:213514 8260B 11/17/15:216887 p-Isopropyltoluene ND 160* ug/kg 5030B 11/17/15:213514 8260B 11/17/15:216887 Methyl tert-butyl ether ND 160* ug/kg 5030B 11/17/15:213514 82608 11/17/15:216887 (MTBE) 4-Methyl 2 pentariorie ND 800* ug/kg 50308 11/17/15:213514 826013 11/17/15:216887 (MIRK) Methylene Chloride ND 160* ug/kg 5030B 11/17/15:213514 8260B 11/17/15:216887 Naphthalene ND 640* ug/kg 50308 11/17/15:213514 8260B 11/17/15:216887 n-Propylbenzene ND 160* ug/kg 50308 11/17/15:213514 8260B 11/17/15:216887 Styrene ND 160* ug/kg 503013 11/17/15:213514 8260B 11/17/15:216887 tertAmyl methyl ether ND 160* ug/kg 5030B 11/17/15:213514 8260B 11/17/15:216887 (TAME) 1,1,1,2-Tetrachloroethane ND 160* ug/kg 5030B 11/17/15:213514 8260B 11/17/15:216887 1,1,2,2-Tetrachloroethane ND 160* ug/kg 50308 11/17/15:213514 8260B 11/17/15:216887 Tetrachloroethylene ND 160* ug/kg 5030B 11/17/15:213514 8260B 11/17/15:216887 Toluene 620 160* ug/kg 5030B 11/17/15:213514 8260B 11/17/15:216887 I 1,2,3-Trichlorobenzene ND 320* ug/kg 5030B 11/17/15:213514 826013 11/17/15:216887 1,2,4-Trichlorobenzene ND 160* ug/kg 5030B 11/17/15:213514 8260B 11/17/15:216887 1,1,1-Trichloroethane ND 160* ug/kg 5030B 11/17/15:213514 826013 11/17/15:216887 1,1,2-Trichloroethane ND 160* ug/kg 5030B 11/17/15:213514 8260B 11/17/15:216887 Trichloroethylene ND 160* ug/kg 5030B 11/17/15:213514 826013 11/17/15:216887 Trichlorofluoromethane ND 320* ug/kg 5030B 11/17/15:213514 826013 11/17/15:216887 1,2,4-Trimethylbenzene ND 160* ug/kg 5030B 11/17/15:213514 82608 11/17/15:216887 1,3,5-Trimethylbenzene ND 160* ug/kg 50308 11/17/15:213514 8260B 11/17/15:216887 Vinyl Acetate ND 950* ug/kg 5030B 11/17/15:213514 8260B 11/17/15:216887 Vinyl Chloride ND 320* ug/kg 5030B 11/17/15:213514 8260B 11/17/15:216887 Xylenes ND -- ug/kg 5030B 11/17/15:213514 8260B 11/17/15:216887 Xylenes m,p ND 160* ug/kg 5030B 11/17/15:213514 826013 11/17/15:216887 Page 17 of 38 December 16, 2015 Lab ID : SP 1512679-005 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 82606'1 Xylenes o ND 160* ug/kg 5030B 11/17/15:213514 8260B 11/17/15:216887 EPA 82706:1 2-Fluorobiphenyl# 28.5 0-106* % 8270C 11/19/15:213526 8270C 12/15/15:218247 2-Fluoropheno1$ 24.0 0-115* % 8270C 11/19/15:213526 8270C 12/15/15:218247 Nitrobenzene-d5$ 25.8 0-151* % 8270C 11/19/15:213526 8270C 12/15/15:218247 Phenol-d6$ 25.3 0-124* % 8270C 11/19/15:213526 8270C 12/15/15:218247 p-Terphenyl-d14: 18.0 0-101* % 8270C 11/19/15:213526 8270C 12/15/15:218247 2,4,6-Tribromophenol# 22.8 0-129* % 8270C 11/19/15:213526 8270C 12/15/15:218247 Acenaphthene ND 4* mg/kg 8270C 11/19/15:213526 8270C 12/15/15:218247 Acenaphthylene ND 4* mg/kg 8270C 11/19/15:213526 8270C 12/15/15:218247 Aniline ND 20* mg/kg 8270C 11/19/15:213526 82700 12/15/15:218247 Anthracene ND 4* mg/kg 8270C 11/19/15:213526 8270C 12/15/15:218247 1,2-Diphenylhydrazine ND 20* mg/kg 8270C 11/19/15:213526 82700 12/15/15:218247 Benzidine ND 20* mg/kg 8270C 11/19/15:213526 8270C 12/15/15:218247 Benzo(a)anthracene ND 4* mg/kg 8270C 11/19/15:213526 8270C 12/15/15:218247 Benzo(b)fluoranthene ND 4* mg/kg 8270C 11/19/15:213526 82700 12/15/15:218247 Benzo(k)fluoranthene ND 4* mg/kg 82700 11/19/15:213526 8270C 12/15/15:218247 Benzo(g,h,i)perylene ND 4* mg/kg 82700 11/19/15:213526 8270C 12/15/15:218247 Benzo(a)pyrene ND 4* mg/kg 8270C 11/19/15:213526 82700 12/15/15:218247 Benzoic Acid ND 20* mg/kg 8270C 11/19/15:213526 82700 12/15/15:218247 Benzylalcohol ND 8* mg/kg 8270C 11/19/15:213526 82700 12/15/15:218247 4-Bromophenylphenylether ND 4* mg/kg 8270C 11/19/15:213526 82700 12/15/15:218247 Butylbenzylphthalate ND 4* mg/kg 82700 11/19/15:213526 8270C 12/15/15:218247 bis(2 ND 20* mg/kg 8270C 11/19/15:213526 82700 12/15/15:218247 Chloroethoxy)methane bis(2-Chloroethyl)ether ND 24* mg/kg 82700 11/19/15:213526 82700 12/15/15:218247 bis(2-Chloroisopropyl)ether ND 20* mg/kg 8270C 11/19/15:213526 82700 12/15/15:218247 bis(2-Ethylhexyl)phthalate 4 4* mg/kg 8270C 11/19/15:213526 82700 12/15/15:218247 4-Chloroaniline ND 20* mg/kg 8270C 11/19/15:213526 82700 12/15/15:218247 4-Chloro-3-methylphenol ND 8* mg/kg 82700 11/19/15:213526 8270C 12/15/15:218247 2-Chloronaphthalene ND 4* mg/kg 8270C 11/19/15:213526 82700 12/15/15:218247 2-Chlorophenol ND 4* mg/kg 82700 11/19/15:213526 8270C 12/15/15:218247 4-Chlorophenylphenylether ND 4* mg/kg 82700 11/19/15:213526 8270C 12/15/15:218247 Chrysene ND 4* mg/kg 8270C 11/19/15:213526 82700 12/15/15:218247 Dibenzo(a,h)anthracene ND 4* mg/kg 8270C 11/19/15:213526 82700 12/15/15:218247 Dibenzofuran ND 4* mg/kg 8270C 11/19/15:213526 8270C 12/15/15:218247 Di-n-butylphthalate ND 4* mg/kg 8270C 11/19/15:213526 8270C 12/15/15:218247 1,2-Dichlorobenzene ND 20* mg/kg 82700 11/19/15:213526 8270C 12/15/15:218247 I1,3-Dichlorobenzene ND _ 20* mg/kg 82700 11/19/15:213526 82700 12/15/15:218247 Page 18 of 38 December 16, 2015 Lab ID : SP 1512679-005 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 82706:1 1,4-Dichlorobenzene ND 20* mg/kg 8270C 11/19/15:213526 8270C 12/15/15:218247 3,3'-Dichlorobenzidine ND 8* mg/kg 8270C 11/19/15:213526 8270C 12/15/15:218247 2,4-Dichlorophenol ND 4* mg/kg 8270C 11/19/15:213526 8270C 12/15/15:218247 Diethylphthalate ND 4* mg/kg 8270C 11/19/15:213526 8270C 12/15/15:218247 2,4-Dimethylphenol ND 4* mg/kg 8270C 11/19/15:213526 8270C 12/15/15:218247 Dimethylphthalate ND 4* mg/kg 8270C 11/19/15:213526 8270C 12/15/15:218247 4,6-Dinitro-2-methylphenol ND 20* mg/kg 8270C 11/19/15:213526 8270C 12/15/15:218247 2,4-Dinitrophenol ND 20* mg/kg 8270C 11/19/15:213526 8270C 12/15/15:218247 2,4-Dinitrotoluene ND 4* mg/kg 8270C 11/19/15:213526 8270C 12/15/15:218247 2,6-Dinitrotoluene ND 4* mg/kg 8270C 11/19/15:213526 8270C 12/15/15:218247 Di-n-octylphthalate ND 4* mg/kg 8270C 11/19/15:213526 8270C 12/15/15:218247 Fluoranthene ND 4* mg/kg 8270C 11/19/15:213526 8270C 12/15/15:218247 Fluorene ND 4* mg/kg 8270C 11/19/15:213526 8270C 12/15/15:218247 Hexachlorobenzene ND 4* mg/kg 8270C 11/19/15:213526 8270C 12/15/15:218247 Hexachlorobutadiene ND 4* mg/kg 8270C 11/19/15:213526 8270C 12/15/15:218247 Hexachlorocyclopentadiene ND 4* mg/kg 8270C 11/19/15:213526 8270C 12/15/15:218247 Hexachloroethane ND 4* mg/kg 8270C 11/19/15:213526 8270C 12/15/15:218247 Indeno(1,2,3-c,d)pyrene ND 4* mg/kg 8270C 11/19/15:213526 8270C 12/15/15:218247 Isophorone ND 4* mg/kg 8270C 11/19/15:213526 8270C 12/15/15:218247 2-Methylnaphthalene ND 4* mg/kg 8270C 11/19/15:213526 8270C 12/15/15:218247 2-Methylphenol ND 4* mg/kg 8270C 11/19/15:213526 8270C 12/15/15:218247 3-and 4-Methylphenol ND 4* mg/kg 8270C 11/19/15:213526 8270C 12/15/15:218247 Naphthalene ND 4* mg/kg 8270C 11/19/15:213526 8270C 12/15/15:218247 2-Nitroanaline ND 20* mg/kg 8270C 11/19/15:213526 8270C 12/15/15:218247 3-Nitroanaline ND 20* mg/kg 8270C 11/19/15:213526 8270C 12/15/15:218247 4-Nitroanaline ND 20* mg/kg 8270C 11/19/15:213526 8270C 12/15/15:218247 Nitrobenzene ND 4* mg/kg 8270C 11/19/15:213526 8270C 12/15/15218247 2-Nitrophenol ND 4* mg/kg 8270C 11/19/15:213526 8270C 12/15/15:218247 4-Nitrophenol ND 20* mg/kg 8270C 11/19/15:213526 8270C 12/15/15:218247 N-Nitrosodimethylamine ND 4* mg/kg 8270C 11/19/15:213526 8270C 12/15/15:218247 N-Nitrosodiphenylamine ND 4* mg/kg 8270C 11/19/15:213526 8270C 12/15/15:218247 N-Nitrosodi-n-propylamine ND 8* mg/kg 8270C 11/19/15:213526 8270C 12/15/15:218247 Pentachlorophenol ND 20* mg/kg 8270C 11/19/15:213526 8270C 12/15/15:218247 Phenanthrene ND 4* mg/kg 8270C 11/19/15:213526 8270C 12/15/15:218247 Phenol ND 4* mg/kg 8270C 11/19/15:213526 8270C 12/15/15:218247 Pyrene ND 4* mg/kg 8270C 11/19/15:213526 8270C 12/15/15:218247 1,2,4-Trichlorobenzene ND 4* mg/kg 8270C 11/19/15:213526 8270C 12/15/15:218247 2,4,5-Trichlorophenol ND 4* mg/kg 8270C 11/19/15:213526 11 8270C 12/15/15:218247 Page 19 of 38 December 16, 2015 Lab ID : SP 1512679-005 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 82706'1 2,4,6-Trichlorophenol ND 4* mg/kg 8270C 11/19/15:213526 82700 12/15/15:218247 Pyridine ND 4* mg/kg 8270C 11/19/15:213526 82700 12/15/15:218247 2,3,4,6-Tetrachlorophenol ND 4* mg/kg 82700 11/19/15:213526 8270C 12/15/15:218247 ND=Non-Detected.PQL=Practical Quantitation Limit.Containers:(AGT)Amber Glass TFE-Cap,(G)Glass Jar,(VOA)VOA Preservatives:HCl pH<2 $Surrogate.*PQL adjusted for dilution. Page 20 of 38 E F A IL ENVIRONMENTAL - AGRICULTURAL Analytical Chemists December 16, 2015 Lab ID : SP 1512679 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 11/17/I5:213431CCG Blank ug/L ND <10 LCS ug/L 50.00 58.2% 3-97 BS ug/L 50.00 61.1% 2-121 BSD ug/L 50.00 40.8% 2-121 BSRPD ug/L 200.0 10 <10 1,2-Dichlorobenzene 3520 11/17/15:213431CCG Blank ug/L ND <10 1,2-Diphenylhydrazine 3520 11/17/15:213431CCG Blank ug/L ND <50 1,3-Dichlorobenzene 3520 11/17/15:213431CCG Blank ug/L ND <10 1,4-Dichlorobenzene 3520 11/17/15213431CCG Blank ug/L ND <10 LCS ug/L 50.00 58.6% 5-96 BS ug/L 50.00 60.2% 1-112 BSD ug/L 50.00 40.4% 1-112 BSRPD ug/L 200.0 9.9 <l0 2,4,5-Trichlorophenol 3520 11/17/15:213431CCG Blank ug/L ND <10 2,4,6-Tribromophenol 3520 11/17/15:213431CCG Blank ug/L 200.0 69.1% 0-133 LCS ug/L 200.0 70.5% 0-133 BS ug/L 200.0 73.9% N/A BSD ug/L 200.0 60.6% N/A BSRPD ug/L 200.0 19.7% <19 410 2,4,6-Trichlorophenol 3520 11/17/15:213431CCG Blank ug/L ND <10 2,4-Dichlorophenol 3520 11/17/15:213431CCG Blank ug/L ND <10 2,4-Dimethylphenol 3520 11/17/15:213431CCG Blank ug/L ND <10 2,4-Dinitrophenol 3520 11/17/15:213431CCG Blank ug/L ND <10 2,4-Dinitrotoluene 3520 11/17/15:213431CCG Blank ug/L ND <10 LCS ug/L 50.00 63.8% 7-118 BS ug/L 50.00 67.0% 26-107 BSD ug/L 50.00 53.4% 26-107 BSRPD ug/L 200.0 6.8 <10 2,6-Dinitrotoluene 3520 11/17/15:213431CCG Blank ug/L ND <10 2-Chlorophenol 3520 11/17/15:213431CCG Blank ug/L ND <10 LCS ug/L 100.0 71.7% 0-108 BS ug/L 100.0 73.8% 10-110 BSD ug/L 100.0 56.9% 10-110 BSRPD ug/L 200.0 25.9% <_54 2-Fluorobiphenyl 3520 11/17/15:213431CCG Blank ug/L 100.0 54.3% 26-97 LCS ug/L 100.0 58.3% 26-97 BS ug/L 100.0 59.5% 30-115 BSD ug/L 100.0 46.1% 30-115 BSRPD ug/L 200.0 25.4% <35 2-Fluorophenol 3520 11/17/15:213431CCG Blank ug/L 200.0 58.0% 0-114 LCS ug/L 200.0 60.9% 0-114 BS ug/L 200.0 65.7% N/A BSD ug/L 200.0 47.3% N/A BSRPD ug/L 200.0 32.6% <41 2-Methylnaphthalene 3520 11/17/15:213431CCG Blank ug/L ND <10 2-Methylphenol 3520 11/17/15:213431CCG Blank ug/L ND <10 2-Nitroaniline 3520 11/17/15:213431CCG Blank ug/L ND <20 2-Nitrophenol 3520 11/17/15:213431CCG Blank ug/L ND <10 3,3-Dichlorobenzidine 3520 11/17/15:213431CCG Blank ug/L ND <20 3-Nitroaniline 3520 11/17/15:213431CCG Blank ug/L ND <20 4,6-Dinitro-2-methylphenol 3520 11/17/15:213431CCG Blank ug/L ND <10 4-Bromophenylphenylether 3520 11/17/15:213431CCG Blank ug/L ND <10 4-Chloro-3-methylphenol 3520 11/17/15:213431CCG Blank ug/L ND <10 LCS ug/L 100.0 74.5% 5-108 BS ug/L 100.0 79.9% 19-103 Page 21 of 38 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 December 16, 2015 Lab ID : SP 1512679 South Tahoe Public Utility District Customer : 2-11369 Quality Control- Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 4-Chloro-3-methylphenol 3520 11/17/15:213431CCG BSD ug/L 100.0 62.7% 19-103 BSRPD ug/L 200.0 24.0% <37 4-Chloroaniline 3520 11/17/15:213431CCG Blank ug/L ND <20 4-Methylphenol 3520 11/17/15:213431CCG Blank ug/L ND <10 4-Nitroaniline 3520 11/17/15:213431CCG Blank ug/L ND <20 4-Nitrophenol 3520 11/17/15:213431CCG Blank ug/L ND <10 LCS ug/L 100.0 70.1% 0-133 BS ug/L 100.0 70.3% 0-119 BSD ug/L 100.0 59.2% 0-119 BSRPD ug/L 200.0 17.2% <31 Acenaphthene 3520 11/17/15:213431CCG Blank ug/L ND <10 LCS ug/L 50.00 68.8% 0-115 BS ug/L 50.00 67.5% 15-115 BSD ug/L 50.00 52.8% 15-115 BSRPD ug/L 200.0 7.4 <10 Acenaphthylene 3520 I1/17/15:213431CCG Blank ug/L ND <10 Aniline 3520 ll/17/15:21343ICCG Blank ug/L ND <20 Anthracene 3520 11/17/15:213431CCG Blank ug/L ND <10 Benzidine 3520 ll/17/15:213431CCG Blank ug/L ND <50 Benzo(a)anthracene 3520 11/17/15:213431CCG Blank ug/L ND <10 Benzo(a)pyrene 3520 11/17/15:213431CCG Blank ug/L ND <10 Benzo(b)fluoranthene 3520 1l/17/15:213431CCG Blank ug/L ND <10 Benzo(g,h,i)perylene 3520 11/17/15:213431CCG Blank ug/L ND <10 Benzo(k)fluoranthene 3520 11/l7/15:213431CCG Blank ug/L ND <10 Benzoic Acid 3520 11/17/15:213431CCG Blank ug/L ND <20 Benzylalcohol 3520 I1/17/15:213431CCG Blank ug/L ND <20 bis(2-Chloroethoxy)methane 3520 11/17/15:213431CCG Blank ug/L ND <10 bis(2-Chloroethyl)ether 3520 11/17/15:213431CCG Blank ug/L ND <10 bis(2-Chloroisopropyl)ether 3520 11/17/15:213431CCG Blank ug/L ND <10 bis(2-Ethylhexyl)phthalate 3520 11/17/15:213431CCG Blank _ uW/L ND <10 Butylbenzylphthalate 3520 Il/17/15:213431CCG Blank ug/L ND <10 Chloronaphthalene 3520 I1/17/15:213431CCG Blank ug/L ND <10 Chlorophenylphenylether 3520 11/17/15:213431CCG Blank ug/L ND <10 Chrysene 3520 11/17/15:213431CCG Blank ug/L ND <10 Dibenzo(a,h)anthracene 3520 11/17/15:213431CCG Blank ug/L ND <10 Dibenzofuran 3520 11/17/15:213431CCG Blank ug/L ND <10 Diethylphthalate 3520 11/17/15:213431CCG Blank ug/L ND <10 Dimethylphthalate 3520 11/17/15:213431CCG Blank ug/L ND <10 Di-n-butylphthalate 3520 11/17/15:213431CCG Blank ug/L ND <10 Di-n-octylphthalate 3520 ll/17/15:213431CCG Blank ug/L ND <10 Fluoranthene 3520 ll/17/15:213431CCG Blank ug/L ND <10 Fluorene 3520 ll/17/15:213431CCG Blank ug/L ND <10 Hexachlorobenzene 3520 Il/17/15:213431CCG Blank ug/L ND <10 Hexachlorobutadiene 3520 11/17/15:213431CCG Blank ug/L ND <10 Hexachlorocyclopentadiene 3520 ll/17/15:213431CCG Blank ug/L ND <10 Hexachloroethane 3520 11/17/15:213431CCG Blank ug/L ND <10 Indeno(1,2,3-c,d)pyrene 3520 11/17/15:213431CCG Blank ug/L ND <10 Isophorone 3520 11/17/15:213431CCG Blank ug/L ND <10 Naphthalene 3520 Il/17/15:213431CCG Blank ug/L ND <10 Nitrobenzene 3520 ll/l7/15:2I3431CCG Blank ug/L ND <10 Nitrobenzene-d5 3520 11/17/15:213431CCG Blank ug/L 100.0 58.1% 22-92 LCS ug/L 100.0 60.1% 22-92 BS ug/L 100.0 59.2% N/A BSD ug/L 100.0 44.7% N/A Page 22 of 38 December 16, 2015 Lab ID : SP 1512679 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 11/17/15:21343ICCG BSRPD ug/L 200.0 27.8% <35 N-Nitrosodimethylamine 3520 11/17/15:213431CCG Blank ug/L ND <10 N-Nitrosodi-N-propylamine 3520 1l/17/15:213431CCG Blank ug/L ND <10 LCS ug/L 50.00 66.6% 0-136 BS ug/L 50.00 69.9% 0-142 BSD ug/L 50.00 55.2% 0-142 BSRPD ug/L 200.0 7.3 <I0 N-Nitrosodiphenylamine 3520 11/17/15:213431CCG Blank ug/L ND <10 Pentachlorophenol 3520 11/17/15:213431CCG Blank ug/L ND <10 LCS ug/L 100.0 67.2% 6-119 BS ug/L 100.0 69.4% 24-102 BSD ug/L 100.0 55.7% 24-102 BSRPD ug/L 200.0 22.0% <26 Phenanthrene 3520 11/17/15:213431CCG Blank ug/L ND <10 Phenol 3520 11/17/15:213431CCG Blank ug/L ND <10 LCS ug/L 100.0 65.8% 0-106 BS ug/L 100.0 68.4% 0-127 BSD ug/L 100.0 48.7% 0-127 BSRPD ug/L 200.0 33.6% <89 Phenol-d6 3520 11/17/15:213431CCG Blank ug/L 200.0 53.5% 0-105 LCS ug/L 200.0 59.4% 0-105 BS ug/L 200.0 61.0% N/A BSD ug/L 200.0 44.2% N/A BSRPD ug/L 200.0 32.0% <51 p-Terphenyl-d14 3520 11/17/15:213431CCG Blank ug/L 100.0 54.3% 20-118 LCS ug/L 100.0 51.5% 20-118 BS ug/L 100.0 54.7% N/A BSD ug/L 100.0 44.5% N/A BSRPD ug/L 200.0 10 <10 Pyrene 3520 11/17/15:213431CCG Blank ug/L ND <10 LCS ug/L 50.00 75.0% 0-151 BS ug/L 50.00 81.2% 45-106 BSD ug/L 50.00 66.8% 45-106 BSRPD ug/L 200.0 7.2 <10 Pyridine 3520 11/l7/15:213431CCG Blank ug/L ND <10 1,1,1,2-Tetrachloroethane 5030B 11/13/15:213313VRG Blank ug/L ND <0.5 5030B 11/17/15:213514VRG Blank ug/kg ND <156 1,1,1-Trichloroethane(TCA) 5030B 11/13/15:213313VRG Blank ug/L ND <0.5 5030B 11/17/15:213514VRG Blank ug/kg ND <156 1,1,2,2-Tetrachloroethane 5030B I1/13/15:213313VRG Blank ug/L ND <0.5 5030B 11/17/15:213514VRG Blank ug/kg ND <156 1,1,2-Trichloroethane 5030B I1/13/15:213313VRG Blank ug/L ND <0.5 5030B 11/17/15:2135I4VRG Blank ug/kg ND <156 1,1-Dichloroethane 5030B 11/13/15:213313VRG Blank ug/L ND <0.5 5030B 11/17/15:213514VRG Blank ug/kg ND <156 l,1-Dichloroethylene 5030B 11/13/15:213313VRG Blank ug/L ND <0.5 LCS ug/L 25.00 78.2% 52-137 MS ug/L 25.00 103% 25-179 (SP 1512679-002) MSD ug/L 25.00 III% 25-179 MSRPD ug/L 0.000 7.4% <26 I 5030B 11/17/15:213514VRG Blank ug/kg ND <156 LCS ug/kg 1875 39.5% 40-139 MS ug/kg 1913 28.7% 0-251 (SP 1512771-001) MSD ug/kg 1860 42.7% 0-251 Page 23 of 38 December 16, 2015 Lab ID : SP 1512679 South Tahoe Public Utility District Customer : 2-11369 Quality Control-Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic l,l-Dichloroethylene 5030B 11/17/15:213514VRG MSRPD ug/kg 1240 36.5% <38.1 1,1-Dichloropropene 5030B II/13/15:213313VRG Blank ug/L ND <0.5 5030B 11/17/15:213514VRG Blank ug/kg ND <156 1,2,3-Trichlorobenzene 5030B 11/13/15:213313VRG Blank ug/L ND <0.5 5030B 11/17/15:213514VRG Blank ug/kg ND <312 1,2,4-Trichlorobenzene 5030B 11/13/15:213313VRG Blank ug/L ND <0.5 5030B 11/17/15:213514VRG Blank ug/kg ND <156 1,2,4-Trimethylbenzene 5030B 11/13/15:213313VRG Blank ug/L ND <0.5 5030B 11/17/15:213514VRG Blank ug/kg ND <156 1,2-Dichlorobenzene 5030B I1/13/15:213313VRG Blank ug/L ND <0.5 5030B 11/17/15:213514VRG Blank ug/kg ND <156 1,2-Dichloroethane(EDC) 5030B 11/13/15:213313VRG Blank ug/L ND <0.5 5030B ll/17/15:213514VRG Blank ug/kg ND <156 1,2-Dichlorocthane-d4 5030B 11/13/15:213313VRG Blank ug/L 20.00 126% 58-166 LCS ug/L 20.00 125% 58-166 MS ug/L 20.00 125% 58-166 (SP 1512679-002) MSD ug/L 20.00 126% 58-166 MSRPD ug/L 0.000 1.1% <20.0 5030B 11/17/15:213514VRG Blank ug/kg 1250 100% 49-169 LCS ug/kg 1250 132% 49-169 MS ug/kg 1276 120% 49-169 (SP 1512771-001) MSD ug/kg 1240 121% 49-169 MSRPD ug/kg 1240 2.8% <20.0 1,2-Dichloropropane 5030B I1/13/15:213313VRG Blank ug/L ND <0.5 5030B 11/17/15:213514VRG Blank ug/kg ND <156 1,3,5-Trimethylbenzene 5030B I1/13/15:213313VRG Blank ug/L ND <0.5 5030B 11/17/15:213514VRG Blank ug/kg ND <156 1,3-Dichlorobenzene 5030B I1/13/15:213313VRG Blank ug/L ND <0.5 5030B 11/17/15:213514VRG Blank ug/kg ND <156 1,3-Dichloropropane 5030B 11/13/15:213313VRG Blank ug/L ND <0.5 5030B 11/l7/15:213514VRG Blank ug/kg ND <156 1,4-Dichlorobenzene 5030B 11/13/15:213313VRG Blank ug/L ND <0.5 5030B 11/17/15:213514VRG Blank ug/kg ND <156 2,2-Dichloropropane 5030B 11/13/15:213313VRG Blank ug/L ND <0.5 5030B 11/17/I5:2I35I4VRG Blank ug/kg ND <156 2-Butanone(MEK) 5030B 11/13/15:213313VRG Blank ug/L ND <10 5030B 11/17/15:213514VRG Blank ug/kg ND <781 2-Chlorotolucne 5030B 11/13/15:213313VRG Blank ug/L ND <0.5 5030B 11/17/15:213514VRG Blank ug/kg ND <156 2-Hexanone 5030B II/13/15:213313VRG Blank ug/L ND <10 5030B 11/17/15:213514VRG Blank ug/kg ND <781 4-Bromofluorobenzene 5030B 11/13/15:213313VRG Blank ug/L 20.00 112% 79-I 19 LCS ug/L 20.00 114% 79-119 MS ug/L 20.00 110% 79-119 (SP 1512679-002) MSD ug/L 20.00 111% 79-119 MSRPD ug/L 0.000 1.1% <20.0 5030B 11/17/15:213514VRG Blank ug/kg 1250 80.5% 75-146 LCS ug/kg 1250 108% 75-146 MS ug/kg 1276 101% 75-146 (SP 1512771-001) MSD ug/kg 1240 104% 75-146 MSRPD ug/kg 1240 0.8% <20.0 4-Chlorotoluene 5030B 11/13/15:213313VRG Blank ug/L ND <0.5 5030B 11/17/15:213514VRG Blank ug/kg ND <156 4-Methyl-2-pentanone(MIBK) 5030B I1/13/15:213313VRG Blank ug/L ND <10 Page 24 of 38 December 16, 2015 Lab ID : SP 1512679 South Tahoe Public Utility District Customer : 2-11369 Quality Control- Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 4-Methyl-2-pentanone(MIBK) 5030B 11/17/15:2135 I4VRG Blank ug/kg ND <781 Acetone 5030B 11/13/15:213313VRG Blank ug/L ND <50 5030B 11/17/15:2135I4VRG Blank ug/kg ND <3120 Acrolein 5030B 11/13/15:213313VRG Blank ug/L ND <50 5030B 11/17/15:213514VRG Blank ug/kg ND <3120 Acrylonitrile 5030B 11/13/15:213313VRG Blank ug/L ND <50 503013 11/17/15:213514VRG Blank ug/kg ND <3120 Benzene 5030B 11/13/15:213313VRG Blank ug/L ND <0.5 LCS ug/L 25.00 93.8% 60-134 MS ug/L 25.00 102% 47-169 (SP 1512679-002) MSD ug/L 25.00 110% 47-169 MSRPD ug/L 0.000 8.0% <24 5030B 11/17/15:213514VRG Blank ug/kg ND <156 LCS ug/kg 1875 123% 67-139 MS ug/kg 1913 102% 21-162 (SP 1512771-001) MSD ug/kg 1860 101% 21-162 MSRPD ug/kg 1240 3.7% <37.9 Bromobenzene 5030B I1/13/15:213313VRG Blank ug/L ND <0.5 503013 11/17/15:213514VRG Blank ug/kg ND <156 Bromochloromethane 5030B I1/I3/15:2133I3VRG Blank ug/L ND <0.5 5030B 11/17/15:213514VRG Blank ug/kg ND <156 Bromodichloromethane 5030B 11/13/15:2133I3VRG Blank ug/L ND <0.5 5030B ll/17/15:213514VRG Blank ug/kg ND <156 Bromoform 5030B 11/13/15:213313VRG Blank ug/L ND <0.5 5030B 11/17/15:2135I4VRG Blank ug/kg ND <156 Bromomethane(Methyl Bromide) 5030B 11/13/15:213313VRG Blank ug/L ND <0.5 5030B ll/17/15:213514VRG Blank ug/kg ND <312 Carbon Disulfide 5030B 11/13/15:213313VRG Blank ug/L ND <20 5030B 11/17/15:213514VRG Blank ug/kg ND <781 Carbon Tetrachloride 5030B 11/13/15:213313VRG Blank ug/L ND <1 5030B 11/17/15:213514VRG Blank ug/kg ND <156 Chlorobenzene 5030B 11/13/15:213313VRG Blank ug/L ND <0.5 LCS ug/L 25.00 109% 56-152 MS ug/L 25.00 110% 31-212 (SP 1512679-002) MSD ug/L 25.00 119% 31-212 MSRPD ug/L 0.000 8.3% <27 503013 ll/17/15:213514VRG Blank ug/kg ND <156 LCS ug/kg 1875 138% 62-144 MS ug/kg 1913 118% 18-165 (SP 1512771-001) MSD ug/kg 1860 119% 18-165 MSRPD ug/kg 1240 1.9% <40.3 Chloroethane(Ethyl Chloride) 5030B 11/13/15:213313VRG Blank ug/L ND <1 5030B 11/17/15:213514VRG Blank ug/kg ND <312 Chloroform 5030B 11/13/15:213313VRG Blank ug/L ND <1 503013 11/17/15:213514VRG Blank ug/kg ND <156 Chloromethane(Methyl Chloride) 5030B 11/13/15:213313VRG Blank ug/L ND <0.5 5030B 11/17/15:213514VRG Blank ug/kg ND <312 cis-1,2-Dichloroethylene 5030B 11/13/15:213313VRG Blank ug/L ND <0.5 5030B ll/17/15:213514VRG Blank ug/kg ND <156 cis-1,3-Dichloropropene 5030B I1/13/15:213313VRG Blank ug/L ND <0.5 5030B ll/17/15:213514VRG Blank ug/kg ND <156 Dibromochloromethane 5030B Il/13/15:213313VRG Blank ug/L ND <I _ 503013 ll/17/15:213514VRG Blank ug/kg ND <156 Dibromofluromethane 5030B 11/13/15:213313VRG Blank ug/L 20.00 131% 84-136 Page 25 of 38 December 16, 2015 Lab ID : SP 1512679 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 11/13/15:213313VRG LCS ug/L 20.00 133% 84-136 MS ug/L 20.00 132% 86-127 435 (SP 1512679-002) MSD ug/L 20.00 134% 86-127 435 MSRPD ug/L 0.000 1.3% <20.0 5030B 11/17/15:213514VRG Blank ug/kg 1250 101% 59-166 LCS ug/kg 1250 138% 59-166 MS ug/kg 1276 121% 25-177 (SP 1512771-001) MSD ug/kg 1240 123% 25-177 MSRPD ug/kg 1240 1.3% <20.0 Dibromomethane 5030B 1l/13/15:213313VRG Blank ug/L ND <0.5 5030B 11/17/15:213514VRG Blank ug/kg ND <156 Dichlorodifluoromethane 5030B ll/13/15:213313VRG Blank ug/L ND <0.5 5030B ll/17/15:213514VRG Blank ug/kg ND <312 Dichloromethane 5030B ll/13/15:213313VRG Blank ug/L ND <0.5 5030B 11/17/15:213514VRG Blank ug/kg ND <156 Ethyl tert-Butyl Ether 5030B 11/13/15:213313VRG Blank ug/L ND <2 5030B 11/17/15:213514VRG Blank ug/kg ND <156 Ethylbenzene 5030B 11/13/15:213313VRG Blank ug/L ND <0.5 5030B ll/17/15:213514VRG Blank ug/kg ND <156 Freon-ll 5030B Il/13/15:213313VRG Blank _L ND <I 5030B 11/17/15:213514VRG Blank ug/kg ND <312 Hexachlorobutadiene 5030B Il/13/15:213313VRG Blank ug/L ND <0.5 50308 1l/17/15:213514VRG Blank ug/kg ND <156 Isopropyl Ether 5030B 11/13/15:213313VRG Blank ug/L ND <5 50308 ll/17/15:213514VRG Blank ug/kg ND <156 Isopropylbenzene 5030B 11/13/15:213313VRG Blank ug/L ND <0.5 5030B ll/l7/15:213514VRG Blank ug/kg ND <156 Methyl tert-Butyl Ether(MTBE) 5030B 11/13/15:213313VRG Blank ug/L ND <2 5030B 11/17/15:213514VRG Blank ug/kg ND <156 Naphthalene 5030B 11/l3/15:213313VRG Blank ug/L ND <0.5 5030B ll/l7/15:213514VRG Blank ug/kg ND <625 n-Butylbenzene 5030B 11/l3/15:213313VRG Blank ug/L ND <0.5 5030B ll/l7/15:213514VRG Blank ug/kg ND <156 n-Propylbenzene 5030B 11/13/15:213313VRG Blank ug/L ND <0.5 5030B 11/l7/15:213514VRG Blank ug/kg ND <156 p-Isopropyltoluene - 5030B 11/13/15:213313VRG Blank ug/L ND <0.5 50308 11/17/15:213514VRG Blank ug/kg ND <156 sec-Butylbenzene 5030B 11/13/15:213313VRG Blank _ u /�L ND <0.5 5030B 11/17/15:213514VRG Blank ug/kg ND <156 Styrene 5030B ll/13/15:213313VRG Blank ug/L ND <0.5 5030B 1l/17/15:213514VRG Blank ug/kg ND <156 TAME 5030B 1l/13/15:213313VRG Blank ug/L ND <5 5030B 11/17/15:213514VRG Blank ug/kg ND <156 tert-Butanol 5030B 11/13/15:213313VRG Blank _ ND <5 5030B ll/l7/15:213514VRG Blank ug/kg ND <625 tert-Butylbenzene 5030B 1l/l3/15:213313VRG Blank ug/L ND <0.5 5030B ll/l7/15:213514VRG Blank ug/kg ND <156 Tetrachloroethylene(PCE) 5030B 11/13/15:213313VRG Blank /L ND <0.5 5030B 11/l7/15:213514VRG Blank ug/kg ND <156 Toluene 5030B 11/13/15:213313VRG Blank ug/L ND <0.5 LCS ug/L 25.00 91.4% 56-131 MS ug/L 25.00 98.6% 44-164 (SP 1512679-002) MSD ug/L 25.00 106% 44-164 Page 26 of 38 December 16, 2015 Lab ID : SP 1512679 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 11/13/15:213313VRG MSRPD ug/L 0.000 7.5% <30 5030B ll/17/15:213514VRG Blank ug/kg ND <156 LCS ug/kg 1875 123% 63-133 MS ug/kg 1913 103% 22-171 (SP 1512771-001) MSD ug/kg 1860 101% 22-171 MSRPD ug/kg 1240 4.8% <35.8 Toluene-d8 5030B 11/13/15:213313VRG Blank ug/L 20.00 124% 88-111 LCS ug/L 20.00 126% 88-111 310 MS ug/L 20.00 125% 88-111 435 (SP 1512679-002) MSD ug/L 20.00 123% 88-111 435 MSRPD ug/L 0.000 1.0% <20.0 5030B 11/17/15:213514VRG Blank ug/kg 1250 92.1% 78-119 LCS ug/kg 1250 128% 78-119 310 MS ug/kg 1276 115% 78-119 (SP 1512771-001) MSD ug/kg 1240 115% 78-119 MSRPD ug/kg 1240 2.2% 520.0 trans-l,2-Dichloroethylene 5030B I1/13/15:213313VRG Blank ug/L ND <0.5 5030B 11/17/15:213514VRG Blank ug/kg ND <156 trans-1,3-Dichloropropene 5030B 11/13/15:2I3313VRG Blank ug/L ND <0.5 5030B 11/17/15:213514VRG Blank ug/kg ND <156 Trichloroethylene(TCE) 5030B 11/13/15:213313VRG Blank ug/L ND <0.5 LCS ug/L 25.00 82.0% 61-123 MS ug/L 25.00 95.4% 41-167 (SP 1512679-002) MSD ug/L 25.00 102% 41-167 MSRPD ug/L 0.000 6.7% 532 5030B 11/17/15:213514VRG Blank ug/kg ND <156 LCS ug/kg 1875 107% 68-119 MS ug/kg 1913 90.2% 14-170 (SP 1512771-001) MSD ug/kg 1860 90.0% 14-170 MSRPD ug/kg 1240 3.1% 544.7 Vinyl Acetate 5030B 11/13/15:213313VRG Blank ug/L ND <10 5030B 11/17/15:213514VRG Blank ug/kg ND <938 Vinyl Chloride 5030B 11/13/15:213313VRG Blank ug/L ND <0.5 5030B 11/17/15:213514VRG Blank ug/kg ND <312 Xylenes m,p 5030B 11/13/15:213313VRG Blank ug/L ND <2 5030B 11/17/15:213514VRG Blank ug/kg ND <156 Xylenes o 5030B 11/13/15:213313VRG Blank ug/L ND <2 5030B 1l/17/15:213514VRG Blank ug/kg ND <156 Aldrin 608 11/16/15:213379DT Blank ug/L ND <0.05 LCS ug/L 0.5000 56.3% 43-121 BS ug/L 0.5000 58.1% 53-106 BSD ug/L 0.5000 82.2% 53-106 BSRPD ug/L 0.5005 34.3% <20 410 608 11/25/15:217324SBL CCV ug/L 50.00 105% 85-115 CCV ug/L 100.0 105% 85-115 CCV ug/L 50.00 106% 85-115 Alpha BHC 608 11/16/15:213379DT Blank ug/L ND <0.05 LCS ug/L 0.5000 63.5% 46-119 BS ug/L 0.5000 67.7% 53-118 BSD ug/L 0.5000 97.4% 53-118 BSRPD ug/L 0.5005 36.0% <I4 410 608 1 I/25/15:217324SBL CCV ug/L 50.00 105% 85-115 CCV ug/L 100.0 112% 85-115 CCV ug/L 50.00 112% 85-115 Page 27 of 38 December 16, 2015 Lab ID : SP 1512679 South Tahoe Public Utility District Customer : 2-11369 Quality Control-Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic alpha-Chlordane 608 11/16/15:213379DT Blank ug/L ND <0.05 LCS ug/L 0.5000 58.8% 41-124 BS ug/L 0.5000 62.2% 56-102 BSD ug/L 0.5000 91.1% 56-102 BSRPD ug/L 0.5005 37.7% <32 410 608 11/25/15:217324SBL CCV ug/L 50.00 100% 85-115 CCV ug/L 100.0 102% 85-115 CCV ug/L 50.00 103% 85-115 Beta BHC 608 11/16/15:213379DT Blank ug/L ND <0.05 LCS ug/L 0.5000 65.8% 42-119 BS ug/L 0.5000 70.2% 58-118 BSD ug/L 0.5000 98.1% 58-118 BSRPD ug/L 0.5005 33.1% <15 410 608 11/25/15:217324SBL CCV ug/L 50.00 108% 85-115 CCV ug/L 100.0 108% 85-I 15 CCV ug/L 50.00 108% 85-115 Chlordane 608 I1/16/15:213379DT Blank ug/L ND <2 DDD 608 11/16/15:213379DT Blank ug/L ND <0.05 LCS ug/L 0.5000 94.0% 42-127 BS ug/L 0.5000 97.6% 59-97 436 BSD ug/L 0.5000 93.5% 59-97 BSRPD ug/L 0.5005 4.4% <37 DDE 608 11/16/15:213379DT Blank ug/L ND <0.05 LCS ug/L 0.5000 60.1% 39-130 BS ug/L 0.5000 63.4% 37-102 BSD ug/L 0.5000 93.7% 37-102 BSRPD ug/L 0.5005 38.7% <16 410 DDT 608 11/16/15:213379DT Blank ug/L ND <0.05 LCS ug/L 0.5000 108% 43-133 BS ug/L 0.5000 110% 20-143 BSD ug/L 0.5000 104% 20-143 BSRPD ug/L 0.5005 5.3% <l6 Delta BHC 608 11/16/15:213379DT Blank ug/L ND <0.05 LCS ug/L 0.5000 57.2% 41-132 BS ug/L 0.5000 58.8% 47-136 BSD ug/L 0.5000 87.7% 47-136 BSRPD ug/L 0.5005 38.6% <l5 410 608 11/25/15:217324SBL CCV ug/L 50.00 92.4% 85-115 CCV ug/L 100.0 107% 85-115 CCV ug/L 50.00 105% 85-115 Dieldrin 608 11/16/15:213379DT Blank ug/L ND <0.05 LCS ug/L 0.5000 56.7% 38-122 BS ug/L 0.5000 60.7% 68-97 436 BSD ug/L 0.5000 89.7% 68-97 BSRPD ug/[. 0.5005 38.6% <20 410 608 11/25/15:217324SBL CCV ug/L 50.00 102% 85-115 CCV ug/L 100.0 102% 85-115 CCV ug/L 50.00 103% 85-115 Endosulfan I 608 11/16/15:213379DT Blank ug/L ND <0.05 LCS ug/L 0.5000 60.0% 14-172 BS ug/L 0.5000 63.1% 16-183 BSD ug/L 0.5000 92.8% 16-183 BSRPD ug/L 0.5005 38.1% 522 410 608 11/25/15:217324SBL CCV ug/L 50.00 99.8% 85-115 Page 28 of 38 December 16, 2015 Lab ID : SP 1512679 South Tahoe Public Utility District Customer : 2-11369 Quality Control- Organic onstituent Method Date/ID Type Units Conc. QC Data DQO Note 9 rganic ndosulfan I 608 11/25/15:217324SBL CCV ug/L 100.0 102% 85-115 CCV ug/L 50.00 102% 85-115 Endosulfan II 608 11/16/15:213379DT Blank ug/L ND <0.05 LCS ug/L 0.5000 65.2% 8-212 BS ug/L 0.5000 69.7% 33-310 BSD ug/L 0.5000 104% 33-310 BSRPD ug/L 0.5005 39.1% <24 410 608 11/25/15:217324SBL CCV ug/L 50.00 94.1% 85-115 CCV ug/L 100.0 96.9% 85-115 CCV ug/L 50.00 97.8% 85-115 Endosulfan Sulfate 608 11/16/15:213379DT Blank ug/L ND <0.05 LCS ug/L 0.5000 54.9% 37-131 'I BS ug/L 0.5000 59.3% 53-124 BSD ug/L 0.5000 89.0% 53-124 BSRPD ug/L 0.5005 40.0% <19 410 608 11/25/15:217324SBL CCV ug/L 50.00 98.4% 85-115 CCV ug/L 100.0 98.4% 85-115 CCV ug/L 50.00 100% 85-115 Endrin 608 11/16/15:213379DT Blank ug/L ND <0.05 LCS ug/L 0.5000 53.6% 0-192 BS ug/L 0.5000 57.4% 31-135 BSD ug/L 0.5000 83.4% 31-135 BSRPD ug/L 0.5005 35.8% <30 410 608 11/25/15:217324SBL CCV ug/L 50.00 86.6% 85-115 CCV ug/L 100.0 91.4% 85-115 CCV ug/L 50.00 92.2% 85-115 I ndrin Aldehyde 608 11/16/15:213379DT Blank ug/L ND <0.05 LCS ug/L 0.5000 48.0% 34-135 BS ug/L 0.5000 52.2% 40-109 BSD ug/L 0.5000 79.3% 40-109 BSRPD ug/L 0.5005 41.2% <l3 410 608 11/25/15:217324SBL CCV ug/L 50.00 102% 85-115 CCV ug/L 100.0 98.4% 85-115 CCV ug/L 50.00 102% 85-115 Endrin Ketone 608 11/16/15:213379DT Blank ug/L ND <0.05 LCS ug/L 0.5000 54.1% 38-151 BS ug/L 0.5000 57.8% 38-172 BSD ug/L 0.5000 85.8% 38-172 BSRPD ug/L 0.5005 39.1% <20 410 608 11/25/15:217324SBL CCV ug/L 50.00 99.9% 85-115 CCV ug/L 100.0 95.6% 85-115 CCV ug/L 50.00 99.5% 85-115 _amma-Chlordane 608 II/16/15:213379DT Blank ug/L ND <0.05 LCS ug/L 0.5000 60.4% 40-124 BS ug/L 0.5000 63.6% 55-99 BSD ug/L 0.5000 92.5% 55-99 BSRPD ug/L 0.5005 37.0% <22 410 608 11/25/15:217324SBL CCV ug/L 50.00 103% 85-115 CCV ug/L 100.0 103% 85-115 CCV ug/L 50.00 106% 85-115 eptachlor 608 11/16/15:213379DT Blank ug/L ND <0.05 LCS ug/L 0.5000 51.4% 38-127 BS ug/L 0.5000 55.2% 58-100 436 BSD ug/L 0.5000 80.2% 58-100 I Page 29 of 38 December 16, 2015 Lab ID : SP 1512679 South Tahoe Public Utility District Customer : 2-11369 Quality Control-Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Heptachlor 608 11/16/15:213379DT BSRPD ug/L 0.5005 36.9% 528 410 608 11/25/15:217324SBL CCV ug/L 50.00 93.0% 85-115 CCV ug/L 100.0 98.2% 85-115 CCV ug/L 50.00 98.7% 85-115 Heptachlor Epoxide 608 11/16/15:213379DT Blank ug/L ND <0.05 LCS ug/L 0.5000 61.2% 42-127 BS ug/L 0.5000 64.6% 53-I 15 BSD ug/L 0.5000 93.6% 53-115 BSRPD ug/L 0.5005 36.6% 523 410 608 11/25/15:217324SBL CCV ug/L 50.00 102% 85-115 CCV ug/L 100.0 102% 85-115 CCV ug/L 50.00 104% 85-115 Lindane 608 11/16/15:213379DT Blank ug/L ND <0.05 LCS ug/L 0.5000 66.6% 45-120 BS ug/L 0.5000 70.5% 49-123 BSD ug/L 0.5000 101% 49-123 BSRPD ug/L 0.5005 35.6% <I6 410 608 11/25/15:217324SBL CCV ug/L 50.00 107% 85-115 CCV ug/L 100.0 113% 85-115 CCV ug/L 50.00 114% 85-115 Methoxychlor 608 ll/16/15:213379DT Blank ug/L ND <0.1 LCS ug/L 0.5000 46.6% 22-147 BS ug/L 0.5000 51.1% 78-103 436 BSD ug/L 0.5000 79.2% 78-103 BSRPD ug/L 0.5005 0.14 <0.1 410 608 11/25/15:217324SBL CCV ug/L 50.00 87.6% 85-115 CCV ug/L 100.0 89.6% 85-I 15 CCV ug/L 50.00 87.6% 85-115 p,p-DDD 608 11/25/15:217324SBL CCV ug/L 100.0 100% 85-115 CCV ug/L 50.00 96.0% 85-115 608 12/01/15:217356SBL CCV ug/L 100.0 96.5% 85-115 CCV ug/L 50.00 103% 85-115 p,p-DDE 608 1 l/25/15:217324SBL CCV ug/L 50.00 99.8% 85-115 CCV ug/L 100.0 106% 85-115 CCV ug/L 50.00 105% 85-115 p,p-DDT 608 12/01/15:217356SBL CCV ug/L 100.0 95.6% 85-115 CCV ug/L 50.00 84.8% 85-115 Tetrachloro-m-xylene 608 11/16/15:213379DT Blank ug/L 0.5005 59.8% 15-143 LCS ug/L 0.5005 50.2% 15-143 BS ug/L 0.5005 52.9% 26-141 BSD ug/L 0.5005 70.8% 26-141 BSRPD ug/L 0.5005 29.0% <29 608 11/25/15:217324SBL CCV ug/L 50.05 106% 85-115 CCV ug/L 100.1 110% 85-115 CCV ug/L 50.05 111% 85-115 Toxaphene 608 II/16/15:213379DT Blank ug/L ND <0.5 tPCB 1016 8082 12/02/15:216373SBL CCV ug/L 500.0 111% 70-130 CCV ug/L 1000 99.7% 70-130 PCB 1260 8082 12/02/15:216373SBL CCV ug/L 500.0 103% 70-130 CCV ug/L 1000 101% 70-130 Tetrachloro-m-xylene 8082 12/02/15:216373SBL CCV ug/L 200.2 95.9% 85-115 CCV ug/L 300.3 99.6% 85-115 PCB 1016/1242-1 8082A 11/16/15:213380DT Blank ug/L ND <0.5 LCS ug/L 2.508 57.2% 63-120 320 Page 30 of 38 December 16,2015 Lab ID : SP 1512679 South Tahoe Public Utility District Customer : 2-11369 Quality Control-Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic PCB 1016/1242-1 8082A 1 I/16/15:213380DT BS ug/L 2.508 63.8% 23-135 BSD ug/L 2.508 76.0% 23-135 BSRPD ug/L 0.5005 0.30 <0.5 PCB 1221-1 8082A 11/16/15:213380DT Blank ug/L ND <0.5 PCB 1232-I 8082A 11/16/15:213380DT Blank ug/L ND <0.5 PCB 1242 8082A 11/16/15:213380DT Blank ug/L ND <0.5 PCB 1248-1 8082A 11/16/15:213380DT Blank ug/L ND <0.5 PCB 1254-1 8082A 11/16/15:213380DT Blank ug/L ND <0.5 PCB 1260-1 8082A 11/16/15:213380DT Blank ug/L. ND <0.5 LCS ug/L 2.500 56.0% 60-116 320 BS ug/L 2.500 60.5% 34-150 BSD ug/L 2.500 79.3% 34-150 BSRPD ug/L 0.5005 0.47 <0.5 Tetrachloro-m-xylene 8082A 11/16/15:213380DT Blank ug/L 0.5005 42.9% 26-102 LCS ug/L 0.5005 28.2% 26-102 BS ug/L 0.5005 33.6% N/A BSD ug/L 0.5005 43.8% N/A BSRPD ug/L 0.5005 0.051 <0.05 410 I,1,1,2-Tetrachloroethane 8260B 1I/13/15:216845VRG CCV ug/L 25.00 113% 70-130 8260B 11/17/15:216887VRG CCV ug/L 25.00 120% 70-130 I,1,1-Trichloroethane(TCA) 8260B 11/13/15:216845VRG CCV ug/L 25.00 94.2% 70-130 8260B 11/17/15:216887VRG CCV ug/L 25.00 102% 70-130 1,1,2,2-Tetrachloroethane 8260B I I/13/15:216845VRG CCV ug/L 25.00 99.8% 70-130 8260B I I/17/15:216887VRG CCV ug/L 25.00 104% 70-130 1,1,2-Trichloroethane 8260B 11/13/15:216845VRG CCV ug/L 25.00 107% 70-130 8260B 11/17/15:216887VRG CCV ug/L 25.00 116% 70-130 1,1-Dichloroethane 8260B I l/13/15:216845VRG CCV ug/L 25.00 99.1% 70-130 8260B l l/17/15:216887VRG CCV ug/L 25.00 107% 70-130 1,I-Dichloroethylene 8260B I I/13/15:216845VRG CCV ug/L 25.00 92.2% 80-120 8260B 1 I/17/15:216887VRG CCV ug/L 25.00 91.2% 80-120 1,1-Dichloropropene 8260B I l/13/15:216845VRG CCV ug/L 25.00 83.4% 70-130 8260B 1l/17/15:216887VRG CCV ug/L 25.00 84.0% 70-130 1,2,3-Trichlorobenzene 8260B 1 I/13/15:216845VRG CCV ug/L 25.00 90.2% 70-130 8260B 11/17/15:216887VRG CCV ug/L 25.00 79.5% 70-130 I,2,4-Trichlorobenzene 8260B 11/13/15:216845VRG CCV ug/L 25.00 88.5% 70-130 8260B 11/17/15:216887VRG CCV ug/L 25.00 80.0% 70-130 I,2,4-Trimethylbenzene 8260B 11/13/15:2I6845VRG CCV ug/L 25.00 98.9% 70-130 8260B 11/17/15:216887VRG CCV ug/L 25.00 100% 70-130 I,2-Dichlorobenzene 8260B 11/13/15:216845VRG CCV ug/L 25.00 109% 70-130 8260B 11/17/15:216887VRG CCV ug/L 25.00 110% 70-130 1,2-Dichloroethane(EDC) 8260B 11/13/15:2I6845VRG CCV ug/L 25.00 101% 70-130 8260B 11/17/15:216887VRG CCV ug/L 25.00 109% 70-130 1,2-Dichloroethane-d4 8260B 11/13/15:216845VRG CCV ug/L 25.00 97.5% 70-130 8260B 11/17/I5:2I6887VRG CCV ug/L 25.00 98.1% 70-130 1,2-Dichloropropane 8260B 11/13/15:216845VRG CCV ug/L 25.00 96.1% 80-120 8260B 11/17/15:216887VRG CCV ug/L 25.00 101% 80-120 1,3,5-Trimethylbenzene 8260B 11/13/I5:216845VRG CCV ug/L 25.00 100% 70-130 8260B 11/17/15:216887VRG CCV ug/L 25.00 100% 70-130 1,3-Dichlorobenzene 8260B I1/13/15:216845VRG CCV ug/L 25.00 106% 70-130 8260B 11/17/15:216887VRG CCV ug/L 25.00 109% 70-130 1,3-Dichloropropane 8260B I1/13/15:216845VRG CCV ug/L 25.00 108% 70-130 8260B 11/17/15:216887VRG CCV ug/L 25.00 110% 70-130 l,4-Dichlorobenzene 8260B 11/13/15:216845VRG CCV ug/L 25.00 101% 70-130 Page 31 of 38 December 16, 2015 Lab ID : SP 1512679 South Tahoe Public Utility District Customer : 2-11369 Quality Control- Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,4-Dichlorobenzene 8260B 11/17/15:216887VRG CCV ug/L 25.00 105% 70-130 2,2-Dichloropropane 8260B 11/13/15:216845VRG CCV ug/L 25.00 89.3% 70-130 8260B 11/17/15:216887VRG CCV ug/L 25.00 96.7% 70-130 2-Butanone(MEK) 8260B 11/13/15:216845VRG CCV ug/L 100.0 96.2% 50-150 8260B 11/17/15:216887VRG CCV ug/L 100.0 138% 50-150 2-Chlorotoluene 8260B 11/13/15:216845VRG CCV ug/L 25.00 96.6% 70-130 8260B 11/17/15:216887VRG CCV ug/L 25.00 97.5% 70-130 2-Hexanone 826013 11/13/15:216845VRG CCV ug/L 100.0 77.5% 50-150 8260B 11/17/15:216887VRG CCV ug/L 100.0 108% 50-150 4-Bromofluorobenzene(BFB) 8260B 11/13/15:216845VRG CCV ug/L 25.00 94.7% 70-130 82608 11/17/15:216887VRG CCV ug/L 25.00 95.7% 70-130 4-Chlorotoluene 8260B 11/13/15:216845VRG CCV ug/L 25.00 99.8% 70-130 8260B 11/17/15:216887VRG CCV ug/L 25.00 101% 70-130 4-Methyl-2-pentanone(MIBK) 82608 11/13/15:216845VRG CCV ug/L 100.0 76.8% 50-150 8260B 11/17/15:216887VRG CCV ug/L 100.0 108% 50-150 Acetone 8260B I l/13/15:216845VRG CCV ug/L 100.0 88.4% 50-150 - 8260B 11/17/15:216887VRG CCV ug/L 100.0 131% 50-150 Acrolein 8260B l 1/13/15:216845VRG CCV ug/L 200.0 58.3% 50-150 8260B 11/17/15:216887VRG CCV ug/L 200.0 161% 50-150 360 Acrylonitrile 8260B 11/13/15:216845VRG CCV ug/L 200.0 90.0% 50-150 8260B 1 I/17/15:216887VRG CCV ug/L 200.0 214% 50-150 360 Benzene 8260B 11/13/15:216845VRG CCV ug/L 25.00 97.1% 70-130 8260B 1 I/17/15:216887VRG CCV ug/L 25.00 102% 70-130 Bromobenzene 8260B 1 I/13/15:216845VRG CCV ug/L 25.00 102% 70-130 8260B 1 l/17/15:216887VRG CCV ug/L 25.00 103% 70-130 Bromochloromethane 8260B I I/13/15:216845VRG CCV ug/L 25.00 104% 70-130 8260B 11/17/15:216887VRG CCV ug/L 25.00 115% 70-130 Bromodichloromethane 82608 11/13/15:216845VRG CCV ug/L 25.00 I I1% 70-130 8260B 11/17/15:216887VRG CCV ug/L 25.00 119% 70-130 Bromoform 8260B 11/13/15:216845VRG CCV ug/L 25.00 141% 70-130 360 8260B 11/17/15:216887VRG CCV ug/L 25.00 143% 70-130 360 Bromomethane(Methyl Bromide) 8260B 11/13/15:216845VRG CCV ug/L 25.00 117% 70-130 8260B 11/17/15:216887VRG CCV ug/L 25.00 130% 70-130 Carbon Disulfide 8260B 11/13/15:216845VRG CCV ug/L 100.0 106% 50-150 8260B 11/17/15:216887VRG CCV ug/L 100.0 172% 50-150 360 Carbon Tetrachloride 8260B 11/13/15:216845VRG CCV ug/L 25.00 90.9% 70-130 8260B 11/17/15:216887VRG CCV ug/L 25.00 97.1% 70-130 Chlorobenzene 8260B 11/13/15:216845VRG CCV ug/L 25.00 106% 70-130 8260B 11/17/15:216887VRG CCV ug/L 25.00 109% 70-130 Chloroethane(Ethyl Chloride) 8260B I l/13/15:216845VRG CCV ug/L 25.00 96.6% 70-130 8260B 1I/17/15:216887VRG CCV ug/L 25.00 111% 70-130 Chloroform 8260B 11/13/15:216845VRG CCV ug/L 25.00 99.4% 80-120 8260B 11/17/15:216887VRG CCV ug/L 25.00 107% 80-120 Chloromethane(Methyl Chloride) 826013 11/13/15:216845VRG CCV ug/L 25.00 102% 70-130 8260B 11/17/15:216887VRG CCV ug/L 25.00 107% 70-130 cis-I,2-Dichloroethylene 8260B 11/13/15:216845VRG CCV ug/L 25.00 111% 70-130 8260B 11/17/15:216887VRG CCV ug/L 25.00 120% 70-130 cis-1,3-Dichloropropane 8260B I I/13/15:216845VRG CCV ug/L 25.00 99.6% 70-130 8260B 11/17/15:216887VRG CCV ug/L 25.00 101% 70-130 Dibromochloromethane 8260B I1/13/15:2I6845VRG CCV ug/L 25.00 129% 70-130 8260B 11/17/15:216887VRG CCV ug/L 25.00 132% 70-130 360 Dibromofluromethane 8260B 11/13/15:216845VRG CCV ug/L 25.00 104% 70-130 8260B 11/17/15:216887VRG CCV ug/L 25.00 106% 70-130 Page 32 of 38 December 16, 2015 Lab ID : SP 1512679 South Tahoe Public Utility District Customer : 2-11369 Quality Control- Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Dibromomethane 8260B 1 l/13/15:216845VRG CCV ug/L 25.00 100% 70-130 8260B 11/17/15:216887VRG CCV ug/L 25.00 109% 70-130 Dichlorodifluoromethane 8260B 11/13/15:216845VRG CCV ug/L 25.00 89.9% 70-130 8260B 11/17/15:216887VRG CCV ug/L 25.00 86.6% 70-130 Dichloromethane 82608 I1/13/15:216845VRG CCV ug/L 25.00 97.8% 70-130 8260B 11/17/15:216887VRG CCV ug/L 25.00 106% 70-130 Ethyl tert-Butyl Ether 8260B I1/13/15:216845VRG CCV ug/L 25.00 121% 50-150 8260B 11/17/15:216887VRG CCV ug/L 25.00 128% 50-150 Ethylbenzene 8260B I1/13/15:216845VRG CCV ug/L 25.00 102% 80-120 8260B 11/17/15:216887VRG CCV ug/L 25.00 103% 80-120 Hexachlorobutadiene 8260B 11/13/15:216845VRG CCV ug/L 25.00 105% 70-130 8260B 11/17/15:216887VRG_CCV ug/L 25.00 101% 70-130 Isopropyl Ether 8260B 1 1/13/15:216845VRG CCV ug/L 25.00 118% 50-150 8260B 11/17/15:216887VRG CCV ug/L 25.00 124% 50-150 Isopropylbenzene 8260B 11/13/15:216845VRG CCV ug/L 25.00 99.1% 70-130 8260B 11/17/15:216887VRG CCV ug/L 25.00 98.9% 70-130 Methyl tert-Butyl Ether 8260B 11/13/15:216845VRG CCV ug/L 25.00 130% 70-130 8260B 11/17/15:216887VRG CCV ug/L 25.00 140% 70-130 360 Naphthalene 8260B 11/13/15:216845VRG CCV ug/L 25.00 83.8% 70-130 8260B 11/17/15:216887VRG CCV ug/L 25.00 74.0% 70-130 n-Butylbenzene 8260B 11/13/15:216845VRG CCV ug/L 25.00 99.6% 70-130 8260B 11/17/15:216887VRG CCV ug/L 25.00 99.9% 70-130 n-Propylbenzene 8260B 11/13/15:216845VRG CCV ug/L 25.00 96.6% 70-130 8260B 11/17/15:216887VRG CCV ug/L 25.00 101% 70-130 p-Isopropyltoluene 8260B 11/13/15:216845VRG CCV ug/L 25.00 99.6% 70-130 8260B 11/17/15:216887VRG CCV ug/L 25.00 101% 70-130 sec-Butylbenzene 8260B 1 I/13/15:216845VRG CCV ug/L 25.00 99.5% 70-130 8260B 11/17/15:216887VRG CCV ug/L 25.00 99.5% 70-130 Styrene 8260B 11/13/15:216845VRG CCV ug/L 25.00 110% 70-130 8260B 11/17/15:216887VRG CCV ug/L 25.00 114% 70-130 TAME 8260B 11/13/15:216845VRG CCV ug/L 25.00 110% 50-150 8260B 11/17/15:216887VRG CCV ug/L 25.00 111% 50-150 tert-Butanol 8260B 11/13/15:216845VRG CCV ug/L 125.0 80.6% 50-150 8260B 11/17/15:216887VRG CCV ug/L 125.0 113% 50-150 tert-Butylbenzene 8260B 1 1/13/15:216845VRG CCV ug/L 25.00 99.6% 70-130 8260B 11/17/15:216887VRG CCV ug/L 25.00 100% 70-130 Tetrachloroethylene(PCE) 8260B 11/13/15:216845VRG CCV ug/L 25.00 101% 70-130 8260B 11/17/15:216887VRG CCV ug/L 25.00 106% 70-130 Toluene 8260B l I/13/15:216845VRG CCV ug/L 25.00 98.1% 80-120 8260B 11/17/15:216887VRG CCV ug/L 25.00 103% 80-120 Toluene-d8 8260B I I/13/15:216845VRG CCV ug/L 25.00 99.5% 70-130 8260B 11/17/15:216887VRG CCV ug/L 25.00 102% 70-130 trans-1,2-Dichloroethylene 8260B 11/13/15:216845VRG CCV ug/L 25.00 104% 70-130 8260B 11/17/15:216887VRG CCV ug/L 25.00 114% 70-130 trans-1,3-Dichloropropene 8260B 1l/13/15:216845VRG CCV ug/L 25.00 98.1% 70-130 8260B 1l/17/15:216887VRG CCV ug/L 25.00 101% 70-130 i Trichloroethylene(TCE) 8260B I 1/13/15:216845VRG CCV ug/L 25.00 95.8% 70-130 8260B 11/17/15:216887VRG CCV ug/L 25.00 99.5% 70-130 Trichlorofluoromethane F-11 8260B 11/13/15:216845VRG CCV ug/L 25.00 112% 70-130 8260B 11/17/15:216887VRG CCV ug/L 25.00 123% 70-130 Vinyl Acetate 8260B I1/13/15:216845VRG CCV ug/L 100.0 120% 50-150 8260B 11/17/15:216887VRG CCV ug/L 100.0 173% 50-150 360 Vinyl Chloride 8260B 11/13/15:216845VRG CCV ug/L 25.00 102% 80-120 Page 3 of18 December 16, 2015 Lab ID : SP 1512679 South Tahoe Public Utility District Customer : 2-11369 Quality Control-Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Vinyl Chloride 8260B I1/17/15:216887VRG CCV ug/L 25.00 108% 80-120 Xylene m,p 8260B 11/13/15:216845VRG CCV ug/L 50.00 107% 70-130 8260B 11/17/15:216887VRG CCV ug/L 50.00 113% 70-130 Xylenes o 8260B 11/13/15:216845VRG CCV ug/L 25.00 109% 70-130 8260B 11/17/15:216887VRG CCV ug/L 25.00 111% 70-130 1,2,4-Trichlorobenzene 8270C 11/19/15:213526CCG Blank mg/kg ND <1 LCS mg/kg 2.500 58.1% 18-81 MS mg/kg 2.500 46.2% 0-105 (SP 1512679-005) MSD mg/kg 2.500 8.6% 0-105 MSRPD mg/kg 2.500 0.94 <1 8270C 12/15/15:218247SBL CCV mg/L 80.00 104% 70-130 1,2-Dichlorobenzene 8270C 11/19/15:213526CCG Blank mg/kg ND <5 8270C 12/15/15:218247SBL CCV mg/L 80.00 100% 70-130 1,2-Diphenylhydrazine 8270C I1/19/15:213526CCG Blank mg/kg ND <5 1,3-Dichlorobenzene 8270C I1/19/15:213526CCG Blank mg/kg ND <5 8270C 12/15/15:218247SBL CCV mg/L 80.00 93.3% 70-130 1,4-Dichlorobenzene 8270C 11/19/15:213526CCG Blank mg/kg ND <5 LCS mg/kg 2.500 58.0% 14-82 MS mg/kg 2.500 42.1% 0-102 (SP 1512679-005) MSD mg/kg 2.500 6.8% 0-102 MSRPD mg/kg 2.500 0.88 <5 8270C 12/15/15:218247SBL CCV mg/L 80.00 98.6% 80-120 2,3,4,6-Tetrachlorophenol 8270C I1/19/15:213526CCG Blank mg/kg ND <1 8270C I2/15/15:218247SBL CCV mg/L 40.00 90.9% 70-130 2,4,5-Trichlorophenol 8270C 11/19/15:213526CCG Blank mg/kg ND <1 8270C 12/15/15:218247SBL CCV mg/L 80.00 111% 70-130 2,4,6-Tribromophenol 8270C 11/19/15:213526CCG Blank mg/kg 10.00 57.2% 0-129 LCS mg/kg 10.00 69.0% 0-129 MS mg/kg 10.00 38.0% N/A (SP 1512679-005) MSD mg/kg 10.00 9.5% N/A MSRPD mg/kg 2.500 2.8 <1 435 8270C 12/15/15:218247SBL CCV mg/L 200.0 99.7% 70-130 2,4,6-Trichlorophenol 8270C I1/19/15:213526CCG Blank mg/kg ND <I 8270C 12/15/15:218247SBL CCV mg/L 80.00 103% 80-120 2,4-Dichlorophenol 8270C I1/19/15:213526CCG Blank mg/kg ND <I 8270C 12/15/15:218247SBL CCV mg/L 80.00 96.5% 80-120 2,4-Dimethylphenol 8270C 11/19/15:213526CCG Blank mg/kg ND <1 8270C I2/15/15:218247SBL CCV mg/L 80.00 101% 70-130 2,4-Dinitrophenol 8270C I1/19/15:213526CCG Blank mg/kg ND <5 8270C 12/15/15:218247SBL CCV mg/L 80.00 93.0% 70-130 2,4-Dinitrotoluene 8270C 11/19/15:213526CCG Blank mg/kg ND <1 LCS mg/kg 2.500 63.9% 15-102 MS mg/kg 2.500 56.5% 0-112 (SP 1512679-005) MSD mg/kg 2.500 6.0% 0-112 MSRPD mg/kg 2.500 1.3 <1 435 8270C 12/15/15:218247SBL CCV mg/L 80.00 95.4% 70-130 2,6-Dinitrotoluene 8270C 11/19/15:213526CCG Blank mg/kg ND <I 8270C 12/15/15:218247SBL CCV mg/L 80.00 104% 70-130 2-Chlorophenol 8270C 11/19/15:213526CCG Blank mg/kg ND <I LCS mg/kg 5.000 68.3% 18-91 MS mg/kg 5.000 57.0% 0-113 (SP 1512679-005) MSD mg/kg 5.000 9.6% 0-113 MSRPD mg/kg 2.500 2.4 <1 435 8270C 12/15/15:218247SBL CCV mg/L 80.00 100% 70-130 Page 34 of 38 December 16, 2015 Lab ID : SP 1512679 South Tahoe Public Utility District Customer : 2-11369 Quality Control-Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 2-Fluorobiphenyl 8270C 1l/19/15:213526CCG Blank mg/kg 5.000 45.8% 0-106 LCS mg/kg 5.000 54.9% 0-106 MS mg/kg 5.000 49.1% N/A (SP 1512679-005) MSD mg/kg 5.000 8.1% N/A MSRPD mg/kg 2.500 2.0 <1 435 8270C 12/15/15:218247SBL CCV mg/L 100.0 102% 70-130 2-Fluorophenol 8270C 11/19/15:213526CCG Blank mg/kg 10.00 53.4% 0-115 LCS mg/kg 10.00 62.3% 0-115 MS mg/kg 10.00 47.0% N/A (SP 1512679-005) MSD mg/kg 10.00 7.7% N/A MSRPD mg/kg 2.500 3.9 <1 435 8270C 12/15/15:218247SBL CCV mg/L 200.0 96.0% 70-130 2-Methylnaphthalene 8270C I1/19/15:213526CCG Blank mz,/kg ND <1 8270C 12/15/15:218247SBL CCV mg/L 80.00 148% 50-150 2-Methylphenol 8270C I1/19/15:213526CCG Blank mg/kg ND <1 8270C 12/15/15:218247SBL CCV mg/L 80.00 113% 70-130 2-Nitroaniline 8270C I1/19/15:213526CCG Blank mg/kg ND <5 8270C 12/15/15:218247SBL CCV mg/L 80.00 135% 50-150 2-Nitrophenol 8270C 11/19/15:213526CCG Blank mg/kg ND <1 8270C 12/15/15:218247SBL CCV mg/L 80.00 105% 80-120 3,3-Dichlorobenzidine 8270C I1/19/15:213526CCG Blank mg/kg ND <2 8270C 12/15/15:218247SBL CCV mg/L 80.00 151% 50-150 360 3-Nitroaniline 8270C 11/19/15:213526CCG Blank _ ms/kg ND <5 8270C 12/15/15:218247SBL CCV mg/L 80.00 132% 50-150 4,6-Dinitro-2-methylphenol 8270C 1 1/19/15:213526CCG Blank mg/kg ND <5 4,6-Dinitro-o-cresol 8270C 12/15/15:218247SBL CCV mg/L 80.00 86.2% 70-130 4-Bromophenylphenylether 8270C I1/19/15:213526CCG Blank mg/kg ND <I 8270C 12/15/15:218247SBL CCV mg/L 80.00 103% 70-130 4-Chloro-3-methylphenol 8270C I1/19/15:213526CCG Blank mg/kg ND <2 LCS mg/kg 5.000 74.3% 16-96 MS mg/kg 5.000 92.0% 0-120 (SP 1512679-005) MSD mg/kg 5.000 17.7% 0-120 MSRPD mg/kg 2.500 3.7 <2 435 4-Chloroaniline 8270C 11/19/15:213526CCG Blank mg/kg ND <5 8270C 12/15/15:218247SBL CCV mg/L 80.00 134% 50-150 4-Methylphenol 8270C 11/19/15:213526CCG Blank mg/kg ND <1 8270C 12/15/15:218247SBL CCV mg/L 80.00 112% 70-130 4-Nitroanilinc 8270C 11/19/15:213526CCG Blank mg/kg ND <5 8270C 12/15/15:218247SBL CCV mg/L 80.00 125% 50-150 4-Nitrophenol 8270C 11/19/15:213526CCG Blank mg/kg ND <5 LCS mg/kg 5.000 70.9% 5-103 MS mg/kg 5.000 158% 0-122 435 (SP 1512679-005) MSD mg/kg 5.000 0.0% 0-122 MSRPD mg/kg 2.500 7.9 <_5 435 8270C 12/15/15:218247SBL CCV mg/L 80.00 95.3% 70-130 Acenaphthene 8270C I1/19/15:213526CCG Blank mg/kg ND <I LCS mg/kg 2.500 64.7% 16-101 MS mg/kg 2.500 57.3% 0-108 (SP 1512679-005) MSD mg/kg 2.500 10.4% 0-108 MSRPD mg/kg 2.500 1.2 <1 435 8270C I2/15/15:218247SBL CCV mg/L 80.00 105% 80-120 Acenaphthylene 8270C II/19/15:213526CCG Blank mg/kg ND <1 8270C I2/15/15:218247SBL CCV mg/L 80.00 104% 70-130 Aniline 8270C 11/19/15:213526CCG Blank mg/kg ND <5 Page 35 of 38 December 16, 2015 Lab ID : SP 1512679 South Tahoe Public Utility District Customer : 2-11369 Quality Control- Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Aniline 8270C 12/15/15:218247SBL CCV mg/L 80.00 128% 50-I50 Anthracene 8270C 11/19/15:213526CCG Blank mg/kg ND <I 8270C I2/15/15:218247SBL CCV mg/L 80.00 106% 70-130 Azobenzene 8270C 12/15/15:218247SBL CCV mg/L 80.00 102% 70-130 Benzidine 8270C 11/19/15:213526CCG Blank mg/kg ND <5 8270C 12/15/15:218247SBL CCV mg/L 80.00 102% 50-150 Benzo(a)anthracene 8270C I 1/19/15:213526CCG Blank mg/kg ND <1 8270C 12/15/15:218247SBL CCV mg/L 80.00 105% 70-130 Benzo(a)pyrene 8270C I l/19/15:213526CCG Blank mg/kg ND <I 8270C 12/15/15:218247SBL CCV mg/L 80.00 110% 80-120 Benzo(b)fluoranthene 8270C 11/19/15:213526CCG Blank mg/kg ND <1 8270C 12/15/15:218247SBL CCV mg/L 80.00 89.7% 70-130 Benzo(g,h,i)perylene 8270C I1/19/15:213526CCG Blank mg/kg ND <I 8270C 12/15/15:218247SBL CCV mg/L 80.00 97.1% 70-130 Benzo(k)fluoranthenc 8270C I1/19/15:213526CCG Blank mg/kg ND <1 8270C 12/15/15:218247SBL CCV mg/L 80.00 101% 70-130 Benzoic Acid 8270C 11/19/15:213526CCG Blank mg/kg ND <5 8270C 12/15/15:218247SBL CCV mg/L 80.00 103% 70-130 Benzylalcohol 8270C 11/19/15:213526CCG Blank mg/kg ND <2 8270C 12/15/15:218247SBL CCV mg/L 80.00 131% 70-130 360 bis(2-Chloroethoxy)methane 8270C Il/19/15:213526CCG Blank mg/kg ND <5 8270C 12/15/15:218247SBL CCV mg/L 80.00 104% 70-130 bis(2-Chloroethyl)ethcr 8270C I1/19/15:213526CCG Blank mg/kg ND <6 8270C 12/15/15:218247SBL CCV mg/L 80.00 101% 70-130 bis(2-Chloroisopropyl)cther 8270C I t/19/15:213526CCG Blank mg/kg ND <5 8270C 12/15/15:218247SBL CCV mg/L 80.00 84.0% 70-130 bis(2-Ethylhexyl)phthalate 8270C II/19/15:213526CCG Blank mg/kg ND <I 8270C 12/15/15:218247SBL CCV mg/L 80.00 104% 70-130 Butylbenzylphthalate 8270C I1/19/15:213526CCG Blank mg/kg ND <I 8270C 12/15/15:218247SBL CCV mg/L 80.00 110% 70-130 Chloronaphthalene 8270C 11/19/15:213526CCG Blank mg/kg ND <I 8270C 12/15/15:218247SBL CCV mg/L 80.00 102% 70-130 Chlorophenylphenylether 8270C I1/19/15:213526CCG Blank mg/kg ND <1 8270C 12/15/15:218247SBL CCV mg/L 80.00 103% 70-130 Chrysene 8270C 11/19/15:213526CCG Blank mg/kg ND <1 8270C 12/15/15:218247SBL CCV mg/L 80.00 103% 70-130 Dibenzo(a,h)anthracene 8270C I1/19/15:213526CCG Blank mg/kg ND <1 8270C 12/15/15:218247SBL CCV mg/L 80.00 97.6% 70-130 Dibenzofuran 8270C 11/19/15:213526CCG Blank mg/kg ND <I 8270C 12/15/15:218247SBL CCV mg/L 80.00 151% 50-150 360 Diethylphthalate 8270C I I/19/15:213526CCG Blank mg/kg ND <1 8270C 12/15/15:218247SBL CCV mg/L 80.00 103% 70-130 Dimethylphthalate 8270C 11/19/15:213526CCG Blank mg/kg ND <I 8270C 12/15/15:218247SBL CCV mg/L 80.00 104% 70-130 Di-n-butylphthalate 8270C 11/19/15:213526CCG Blank mg/kg ND <I 8270C 12/15/15:218247SBL CCV mg/L 80.00 110% 70-130 Di-n-octylphthalatc 8270C I1/19/15:213526CCG Blank mg/kg ND <1 8270C 12/15/15:218247SBL CCV mg/L 80.00 94.7% 80-120 Fluoranthene 8270C I1/19/15:213526CCG Blank mg/kg ND <I 8270C 12/15/15:218247SBL CCV mg/L 80.00 101% 80-120 Fluorene 8270C 11/19/15:213526CCG Blank mg/kg ND <1 8270C 12/15/15:218247SBL CCV mg/L 80.00 103% 70-130 Hexachlorobenzene 8270C I1/19/15:213526CCG Blank mg/kg ND <1 Page 3.of 38 December 16,2015 Lab ID : SP 1512679 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 12/15/15:218247SBL CCV mg/L 80.00 101% 70-130 Hexachlorobutadiene 8270C I1/19/15:213526CCG Blank mg/kg ND <1 8270C 12/15/15:218247SBL CCV mg/L 80.00 101% 80-120 Hexachlorocyclopentadiene 8270C 11/19/15:213526CCG Blank mg/kg ND <1 8270C 12/15/15:218247SBL CCV mg/L 80.00 93.2% 70-130 Hexachloroethane 8270C I1/19/15:213526CCG Blank mg/kg ND <1 8270C 12/15/15:218247SBL CCV mg/L 80.00 99.7% 70-130 Indeno(1,2,3c,d)pyrene 8270C I1/19/15:213526CCG Blank mg/kg ND <I 8270C 12/15/15:218247SBL CCV mg/L 80.00 101% 70-130 Isophorone 8270C 11/19/15:213526CCG Blank mg/kg ND <1 8270C 12/15/15:218247SBL CCV mg/L 80.00 105% 70-130 Naphthalene 8270C 11/19/15:213526CCG Blank mg/kg ND <1 8270C 12/15/15:218247SBL CCV mg/L 80.00 104% 70-130 Nitrobenzene 8270C I1/19/15:213526CCG Blank mg/kg ND <I 8270C 12/15/15:218247SBL CCV mg/L 80.00 112% 70-130 Nitrobenzene-d5 8270C 11/19/15:213526CCG Blank mg/kg 5.000 47.2% 0-151 LCS mg/kg 5.000 54.2% 0-151 MS mg/kg 5.000 49.5% N/A (SP 1512679-005) MSD mg/kg 5.000 11.6% N/A MSRPD mg/kg 2.500 1.9 <1 435 8270C 12/15/15:218247SBL CCV mg/L 100.0 104% 70-130 N-Nitrosodimethylamine 8270C 11/19/15:213526CCG Blank mg/kg ND <1 8270C 12/15/15:218247SBL CCV mg/L 80.00 119% 70-130 N-Nitrosodi-N-propylamine 8270C I1/19/15:213526CCG Blank mg/kg ND <2 LCS mg/kg 2.500 63.0% 13-120 MS mg/kg 2.500 94.7% 0-154 (SP 1512679-005) MSD mg/kg 2.500 0.0% 0-154 MSRPD mg/kg 2.500 2.4 <2 435 8270C 12/15/15:218247SBL CCV mg/L 80.00 99.1% 70-130 N-Nitrosodiphcnylamine 8270C I1/19/15:213526CCG Blank mg/kg ND <I 8270C 12/15/15:218247SBL CCV mg/L 80.00 93.0% 80-120 p-Chloro-m-cresol 8270C 12/15/15:218247SBL CCV mg/L 80.00 103% 80-120 Pentachlorophenol 8270C 1I/19/15:213526CCG Blank mg/kg ND <5 LCS mg/kg 5.000 58.2% 9-106 MS mg/kg 5.000 70.5% 0-113 (SP 1512679-005) MSD mg/kg 5.000 32.3% 0-113 MSRPD mg/kg 2.500 1.9 <5 8270C 12/15/15:218247SBL CCV mg/L 80.00 95.3% 80-120 Phenanthrene 8270C 1l/I9/15:2I3526CCG Blank mg/kg ND <1 8270C 12/15/15:218247SBL CCV mg/L 80.00 102% 70-130 Phenol 8270C 1l/19/15:213526CCG Blank mg/kg ND <1 LCS mg/kg 5.000 64.4% 18-96 MS mg/kg 5.000 63.9% 0-125 (SP 1512679-005) MSD mg/kg 5.000 10.7% 0-125 MSRPD mg/kg 2.500 2.7 <1 435 8270C 12/15/15:218247SBL CCV mg/L 80.00 98.5% 80-120 Phenol-d6 8270C 11/19/15:213526CCG Blank mg/kg 10.00 47.1% 0-124 LCS mg/kg 10.00 57.2% 0-124 MS mg/kg 10.00 49.5% N/A (SP 1512679-005) MSD mg/kg 10.00 9.4% N/A MSRPD mg/kg 2.500 4.0 <1 435 8270C 12/15/15:218247SBL CCV mg/L 200.0 100% 70-130 p-Terphenyl-d14 8270C 11/19/15:213526CCG Blank mg/kg 5.000 51.4% 0-101 LCS mg/kg 5.000 56.1% 0-101 Page 37 of 38 December 16, 2015 Lab ID : SP 1512679 South Tahoe Public Utility District Customer : 2-11369 Quality Control-Organic onstituent Method Date/ID Type Units Conc. QC Data DQO Note rganic '.p-Terphenyl-d14 8270C MS mg/kg 5.000 33.4% N/A (SP 1512679-005) MSD mg/kg 5.000 0.0% N/A MSRPD mg/kg 2.500 1.7 <1 435 8270C l2/15/15:218247SBL CCV mg/L 100.0 102% 70-130 •yrene 8270C 11/19/15:213526CCG Blank mg/kg ND <I LCS mg/kg 2.500 74.6% 20-102 MS mg/kg 2.500 89.9% 0-135 (SP 1512679-005) MSD mg/kg 2.500 16.0% 0-135 MSRPD mg/kg 2.500 1.8 <1 435 8270C 12/15/15:218247SBL CCV mg/L 80.00 104% 70-130 Pyridine 8270C 11/19/15:213526CCG Blank mg/kg ND <1 8270C 12/15/15:218247SBL CCV mg/L 80.00 114% 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. 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 310 :LCS above Acceptance Range(AR).Samples which were non detect for this analyte were accepted. 320 :LCS not within Acceptance Range(AR).Data was accepted based on the BS/BSD recovery. 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 38 of 38 S ubco. Subcontract to Babcock Laboratories, Inc. Map Ret. Client: Fruit Growers Laboratory,Inc. Address: FGL Environmental,Inc. 853 Corporation St. „a Santa Paula,CA 93060-3005 Phone: (805)392-2000ext0 Fax: (805)525-4172 3 W Contact Person: ua ar h a Project Name: SP 1512679-(2-11369) N g Purchase Order Number: E3 u) I Sampler(s) B.Chernago < x w E• w z pad U u CO) cAa Yi.•. eAa Compositor Setup Date:_/_/_ Time:_/_ E g 3 rx 9 ua E . z O E °h i5 Lab Number: o cn a Samp Date Time .§ a 9 '3 t o a Num Location Description Sampled Sampled 2 F:' g m a O y 5 Centrifuge Cake 11/10/15 00:00 G Sig 2 Remarks: Relinquished Date: Time: Relinquished Date: Time: Relinquished Date: Time: Received By: Date: Time: Received By: Date: Time: Received By: Date: Time: FGL Environmental Doc ID:2D0900157 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 D10010854814675,D10010855082940 3.Were samples received in a chilled condition? Temps: 2 / 2 / 4.Surface water(SWTR)bact samples:A sample that has a temperature upon reciept 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 CrVI verified in lab] 4.VOAs checked for Headspace? Yes No N/A 5.Were all analyses within holding times at time of Yes No reciept? 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 by: Reviewed and Digitally signed by Shawn Peck Shawn Peck ICI Title:Sample Recesn g Approved By Date.11/12/2015-1236:35 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 1512679 SRP-11/12/2015-12:36:35 HEAVENLY VALLEY CREEK EMERGENCY RETENTION BASIN And HEAVENLY VALLEY CREEK MONITORING Monthly monitoring of Heavenly Valley Creek and the monitoring wells were performed throughout 2015. 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 2015 and the yearly averages since monitoring was initiated. Monitoring wells for buried sludge was initiated in 1992. The monthly results for 2015 are reported. Y.' , s it 1 i Fri i. ' . . i. owii ''-.- '," .0%,,. $.- . i t , . t_ f-; 7._ ,__ _.:„ .143 .1 d r,,'+t +trc 6 'g's` la + J 4 �- # 3.- • „ +: ° aL I irf't 1 "` • .. *il „,,,, . � 7 • 3, y it l• • „- r• 44 Y ti 14 1�1 t 'M �. ` 1 a r -., A! ♦• x LSCSX ”' 1 ,..,,..t 4P- It t - ! * k a• +1 . e.� 1.�'� a ,,, -- M'` t r �! 1 i� � • r ' 4. . ":7 _-,;„,_ .''- -- rp 4:---,‘,44:4-,:_:_-7, i ii-iti Tilj+,..: A'--- . ... -...f.-V-. . Ht-- .1'7 '4 ' ---' '7—' -'-'- ' - •"'-i° ' -: ,; ''!45:4'71t 7f-4:7- 11:::."'. ---) - '-7.: till.:• -', - , .$4.„4-. 4 '-'.:. L 1iti ; • - - =. t ±h. � l "°evt° v[,�` 4 •!!•44'4444...--- • 1 • ti4k4 1 .4st 0 '' V' ' 11-' ' oit'.4.;-,14.,. :� y { S ...,--1 �l Y it '`� £�' 1C{�` f r i.� `°'� i'! • k f4.,''''t. r " ,, r t i Fes... - 46,40 ,..„. ..,-. ., S,,•r S r . „ �y �• t t8 .�G - .,.. :„� w ` 1. Lfie`.A.' r . F " ,t -, ,..,:•-•,,-.; r +i4"f� y - x e ° r ``= , R` ., "t • ill ,. `a�,���. a 4 t f .f' ,,� � .,j. Y7 5L. t ..:„..,,,.4,4 ' 2 #~ " aq au. f. • a �: r J r r r" *'NVC-2r''a ii. t ` • a' Z" '',A"..1.'''• a. M „z t. f • + ' t !. 'y '_ 1 4; ;•; 4:" :` _ . .t'=,,,-',,. `2 Q ter _- �'X' vYi 4,..' s" "1 �iT Nt .# ' •-,0 r «��'- !1� s •-L '. a : r o 1 2 e tom} t -,,pir -• -.--, ':r Ai it .' ';"! :,',' .) ik a t . ' r a + '. tr: �. i, } • �� �-,?-114K.44.�.•?-ye° 1'°�° 4,'-`-;1-i-7% 'b''�cr�7rr• It -°y ,�. 1 v --:4--" y� •�� t` 11t ;;0'411,- ���`#�lR� y. _ �_ _. �. P-. '',- ..4t a .' .,e ♦ g '-• b,�aN 'utri` L •.„,..,04i .-k....- _ ',*•,1'3.;10-i ` s4 • r r e x �. �r .,44-:,-.....t.,..:, • "ti-, :°',:z �4 } . .• of .4" itk., " x•a � ";'A. 4414 . 1P N ,A lY r ',;7VC-1�, *. a m me. C'es 1 : .;+, -. 'i ' • ` a _ V , ,- • • --' ' :-Iiii. ' ,,,Alfr,..)14,„,_,... 1-1'' •. , . ;' \I.: '!.,- 1 j''' i% -, I, . v _ ...t. A.. , 4,.., ,1•4„.".4..-,,,,.0,=,,(. ' -'. 1,'',"%;• -,,...t.? , :-„,-,,, .s. osi, r `� ` � w,'o°• M `�'� fa y�'';''x -• L, Image 201UDigitalGlobe'�,��„� •`" � �„ + �{. r: y G oa,Avc .2,D.,'-7n j en v C3 l' I c�r��4apin•Dr - 2010 Google �•° ttr t� 1. Imagery Date: Nov 1. 2007 tat 38.919987° Ion-119.965368° elev 6331 tt 4 1; p d °`"`° ' Eye alt 9853 tt Site: HVC-1 SOUTH TAHOE PUBLIC UTILITY DISTRICT 3/8/2016 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 01/13/2015 Dry 02/24/2015 1.4 7.34 89.0 1.60 0.080 0.234 03/17/2015 8.0 7.56 97.8 1.63 0.157 0.072 04/22/2015 Dry 05/20/2015 7.6 7.24 39.0 1.10 0.106 < 0.010 06/09/2015 11.4 7.01 41.3 1.08 0.119 < 0.010 07/28/2015 Dry 08/21/2015 Dry 09/22/2015 Dry 10/14/2015 Dry 11/10/2015 Dry 12/23/2015 3.4 7.95 82.7 2.56 0.188 0.113 Maximum 11.4 7.95 97.8 2.56 0.0 0.188 0.234 Minimum 1.4 7.01 39.0 1.08 0.0 < 0.080 < 0.010 Average 6.4 7.42 70.0 1.60 0.130 0.088 #Tests 5 5 5 5 0 5 5 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 Maximum 7.3 7.54 84.9 5.50 14.6 0.600 0.330 Minimum 1.9 6.70 42.0 0.90 5.0 0.066 0.038 Average 5.2 7.20 58.2 1.72 7.8 0.189 0.107 #Years 32 32 32 32 28 23 32 Site: HVC-2 SOUTH TAHOE PUBLIC UTILITY DISTRICT 3/8/2016 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 01/13/2015 Dry 02/24/2015 Dry 03/17/2015 Dry 04/22/2015 Dry 05/20/2015 8.7 6.65 42.2 1.38 0.404 0.197 06/09/2015 Dry 07/28/2015 Dry 08/21/2015 Dry 09/22/2015 Dry 10/14/2015 Dry 11/10/2015 Dry 12/23/2015 Dry Maximum 8.7 6.65 42.2 1.38 0.0 0.404 0.197 Minimum 8.7 6.65 42.2 1.38 0.0 0.404 < 0.197 Average 8.7 6.65 42.2 1.38 0.404 0.197 #Tests 1 1 1 1 0 1 1 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 3.75 0.377 0.073 2015 8.7 6.65 42.2 1.38 0.404 0.197 Maximum 10.6 7.13 68.7 4.30 24.6 0.504 0.301 Minimum 0.9 6.33 38.0 1.13 4.0 0.143 0.010 Average 5.8 6.86 50.4 2.08 13.0 0.288 0.066 #Years 31 31 31 31 27 22 31 Site: HVC-3 SOUTH TAHOE PUBLIC UTILITY DISTRICT 3/8/2016 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 01/13/2015 Dry 02/24/2015 Dry 03/17/2015 Dry 04/22/2015 Dry 05/20/2015 7.6 7.27 46.8 1.90 0.476 0.174 06/09/2015 Dry 07/28/2015 Dry 08/21/2015 Dry 09/22/2015 Dry 10/14/2015 Dry 11/10/2015 Dry 12/23/2015 Dry Maximum 7.6 7.27 46.8 1.90 0.0 0.476 0.174 Minimum 7.6 7.27 46.8 1.90 0.0 0.476 < 0.174 Average 7.6 7.27 46.8 1.90 0.476 0.174 #Tests 1 1 1 1 0 1 1 Temp pH EC Chloride COD TKN NO3-N Year C umhos mg/L mg/L mp/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 Maximum 7.6 7.27 289.0 22.50 48.6 3.240 1.220 Minimum 0.9 6.56 42.3 1.27 4.0 0.133 0.011 Average 5.3 6.93 82.5 4.88 16.1 0.460 0.157 #Years 32 32 32 32 28 23 32 Site: HVC-5 SOUTH TAHOE PUBLIC UTILITY DISTRICT 3/8/2016 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 01/13/2015 Dry 02/07/2015 7.4 6.49 61.9 11.40 0.381 0.071 02/24/2015 Dry 03/17/2015 Dry 04/22/2015 Dry 04/25/2015 8.3 5.96 33.8 5.51 2.020 0.066 05/20/2015 Dry 06/09/2015 Dry 07/08/2015 12.4 5.98 22.6 07/28/2015 Dry 08/21/2015 Dry 09/22/2015 Dry 10/14/2015 Dry 10/17/2015 10.0 5.87 16.7 11/10/2015 Dry 12/23/2015 Dry Maximum 12.4 6.49 61.9 11.40 0.0 2.020 0.071 Minimum 7.4 5.87 16.7 5.51 0.0 0.381 0.066 Average 9.5 6.08 33.8 8.46 1.201 0.069 #Tests 4 4 4 2 0 2 2 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 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 0.319 0.069 Average 5.5 6.79 75.5 7.00 56.8 0.902 0.359 #Years 19 19 19 19 15 19 19 Nitrate -Nitrogen 1.40 1.20 1.00 J E 0.80 z M 0.50 O z 0.40 0.20 0.00 —� — HVC-1 t HVC-2 —t— HVC-3 Chloride 25 20 15 U 10 5 0 —�— HVC-1 t HVC-2 HVC-3 Electrical Conductivity 350 300 250 E 200 N O E 150 t 100 50 0 a.... a....$ 8 0 8 8 8 S g 8 8 8 s s s o s - - - - - .- r .- - - .- �- —s — HVC-1 t HVC-2 HVC-3 EMERGENCY RETENTION BASIN, TREATMENT PLANT & BURIED SLUDGE MONITORING WELLS e I roa A it • ' ,a• N 'oleo Sie6ewlLOOL tr trlfi9£ lel59fitr95'fi t t uoi Oit 01£9 A91 oi505rlto ®t3 r eI0V tOZa s �t c s B5i . , � li L.09 Orb A " -`� _9919191....-'81'3 t1'OZ59'euix0 i ► . * 7 . "II * � .144. 4.07 f"d+4 it"b * S p.s -- , ... , g . E t01i6'40gUt y ; " * It n r. . • iIx3118, r • • - ea ^ss� 4 . ..;,. - n r - -I-.`a ? , ,, • '.4.;..-'47. .113.i" 1:,;!..**/: ',,:_:*'''' ::::::...4..._'.,::„';,...:4t—.-'1,__,1„,_':::::: ' i , Jwi-i :, . ., -w ' tea ; M Al . ; + t9 Z�MW� s - i' ! 1.;4*-_ war' - _ ra !i;r4;a: re: r ,, , , ,,,. . ,. ... ,,,,, . .411- : .."T.,.• - • k. �`� . $ /3.7.1\r', A.. esa4.- '...:-.1.7:-.1:„:„.7:-.";;;' i • "• % f s '-'1'7:'' -11,.:::::,/i';'—'4'- .4,,,,P,'.7 ' . MW i0'JjuPo w .. , �+n .uv u Nat,. `, ra s `a a '►s •.. ny ;. _- � *ry fgE' • i g Y - "' 4 w," syn nkd r 3 _ " fir. ""�� A. ift, 2. c'A.; ` , r ; w, ° .r ; ' ii, 1" " . s - S j fd ipauosdwozwgeotlsM o-ug je4v, 1 Ito • .z f W 4 !* ''',0`:5 ' ' --'.• ''` x'fit, „ •,. " j -+} ' - . 't. r " I .' 'fi. s ` . - _ '. ym-� "":".EA-,,,..1„. k s . ,, ry;•n S f - �` r , •- d" ' _ . 'h a �r# v . 44, f 1 T4 4a y _ x- a , w ' J _ q „ , i ♦ .,. em:.c,, • f . A (tlOw, ....,4,..-.... r�.r+!a, ..,-.7-4..,,,,y.......' ` ai , ` - aw 4...t. ?IR,'044 :."v.,� a E -411'..- ", r.,.g : 'rrr .1 - ^.'� y ' e• t '.#b" ;.! ♦ I:�w �r,�4i I!-*'0 r,, .. 1 — 3 r .; y * O . i • ! .r,4 a .r ♦ : dx � rti�# •'�tt -41.1144 4 r , r + ia • a . M } • TT ; `• - T.,� � �„sr,Ai p ,," �,••+.... . r . .,. � W ;. t �* � � ' "_f$�, �x . fit . a _ r yaE .__f4,--- • SOUTH TAHOE PUBLIC UTILITY DISTRICT 3/8/2016 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 01/13/15 6277.60 10.2 6.87 235 15.7 4.62 04/23/15 6277.25 10.9 6.81 235 16.6 4.49 07/28/15 6277.13 11.1 6.84 238 15.0 4.43 10/14/15 6276.36 9.2 6.94 250 16.6 4.85 Maximum 6277.60 11.1 6.94 250 16.6 0 4.85 Minimum 6276.36 9.2 6.81 235 15.0 0 4.43 Average 6277.09 10.4 6.87 240 16.0 4.60 #Tests 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 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 5 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 Maximum 6285.5 11.0 7.44 240 16.0 8 4.70 Minimum 6272.2 9.1 6.66 115 0.6 3 0.10 Average 6279.3 9.7 6.99 175 7.6 6 2.55 #Years 29 29 29 29 29 25 29 SOUTH TAHOE PUBLIC UTILITY DISTRICT 3/8/2016 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 01/13/15 6267.35 7.7 7.04 168 2.20 0.473 04/23/15 6267.06 8.6 6.93 163 2.23 0.444 07/28/15 6267.08 9.5 6.74 175 2.27 0.457 10/14/15 6267.09 9.2 7.14 181 2.22 0.474 Maximum 6267.35 9.5 7.14 181 2.27 0 0.474 Minimum 6267.06 7.7 6.74 163 2.20 0 < 0.444 Average 6267.15 8.8 6.96 172 2.23 0.462 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 6268.9 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 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 6270.1 9.2 7.04 200 6.6 6 1.008 #Years 19 19 19 19 19 15 19 SOUTH TAHOE PUBLIC UTILITY DISTRICT 3/8/2016 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 01/13/15 6267.19 9.4 6.63 324 37.4 3.56 04/23/15 6267.12 10.2 6.92 320 37.4 3.33 07/28/15 6265.46 11.2 6.72 319 35.6 3.11 10/14/15 6266.31 10.2 6.64 329 36.1 3.01 Maximum 6267.19 11.2 6.92 329 37.4 0 3.56 Minimum 6265.46 9.4 6.63 319 35.6 0 3.01 Average 6266.52 10.3 6.73 323 36.6 3.25 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 9.3 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 6.54 358 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 Maximum 6284.1 10.7 8.53 630 63.3 13 18.35 Minimum 6265.9 8.6 6.31 323 36.6 2 3.25 Average 6269.5 10.1 6.65 466 46.8 7 9.94 #Years 22 21 21 21 21 17 21 SOUTH TAHOE PUBLIC UTILITY DISTRICT 3/8/2016 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 01/13/15 6267.16 9.6 6.01 580 48.1 25.9 04/23/15 6267.12 10.4 6.41 557 47.4 21.7 07/28/15 6266.98 10.9 6.12 540 46.3 22.3 10/14/15 6266.88 10.1 6.07 564 47.8 22.5 Maximum 6267.16 10.9 6.41 580 48.1 0 25.9 Minimum 6266.88 9.6 6.01 540 46.3 0 21.7 Average 6267.04 10.3 6.15 560 47.4 23.1 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 6.20 595 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 6267.6 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 6.40 484 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 Maximum 6275.7 11.7 6.59 814 68.9 25 28.95 Minimum 6265.1 9.4 5.96 381 32.0 3 0.75 Average 6268.5 10.5 6.32 545 54.6 8 11.01 #Years 32 32 32 32 32 28 32 SOUTH TAHOE PUBLIC UTILITY DISTRICT 3/8/2016 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 01/13/15 6268.04 7.7 6.14 86.9 4.88 0.483 04/23/15 6268.04 9.5 6.42 84.1 4.98 0.554 07/28/15 6267.85 9.4 6.30 95.9 4.90 0.659 10/14/15 6267.57 9.1 6.22 98.6 4.95 0.734 Maximum 6268.04 9.5 6.42 98.6 4.98 0 0.734 Minimum 6267.57 7.7 6.14 84.1 4.88 0 0.483 Average 6267.88 8.9 6.27 91.4 4.93 0.608 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 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 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 8.8 6.30 132 13.7 6 0.385 #Years 31 31 31 31 31 27 31 SOUTH TAHOE PUBLIC UTILITY DISTRICT 3/8/2016 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 01/13/15 6275.39 7.3 7.44 196 13.3 0.482 04/23/15 6275.13 8.4 7.44 192 12.7 0.442 07/28/15 6275.35 10.7 7.41 196 12.5 0.467 10/14/15 6274.77 11.7 6.90 200 12.6 0.484 Maximum 6275.39 11.7 7.44 200 13.3 0 0.484 Minimum 6274.77 7.3 6.90 192 12.5 0 0.442 Average 6275.16 9.5 7.30 196 12.8 0.469 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 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 18.5 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 Maximum 6282.7 9.5 7.30 297 30.3 13 0.620 Minimum 6268.8 6.7 6.20 196 12.8 4 0.469 Average 6276.6 7.9 6.56 251 23.0 7 0.550 #Years 31 29 29 29 29 25 29 SOUTH TAHOE PUBLIC UTILITY DISTRICT 3/8/2016 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 01/13/15 6244.57 9.8 6.51 913 19.5 < 0.010 04/23/15 6244.55 10.1 6.20 529 19.9 0.012 07/28/15 6244.07 11.2 6.57 751 18.8 < 0.010 10/14/15 6243.97 11.3 6.43 849 19.9 < 0.010 Maximum 6244.57 11.3 6.57 913 19.9 0 0.012 Minimum 6243.97 9.8 6.20 529 18.8 0 < 0.010 Average 6244.29 10.6 6.43 761 19.5 0.011 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 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 Maximum 6248.5 10.8 6.55 1017 143.0 102 5.659 Minimum 6244.3 8.0 5.80 489 12.2 26 0.010 Average 6246.8 9.7 6.35 836 55.2 73 0.380 #Years 32 32 32 32 32 28 32 SOUTH TAHOE PUBLIC UTILITY DISTRICT 3/8/2016 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 01/13/15 6260.46 8.3 6.55 132 2.45 0.104 04/23/15 6260.10 9.7 6.31 122 2.00 0.109 07/28/15 6259.61 11.2 6.44 116 1.40 0.121 10/14/15 6259.36 10.7 6.46 121 1.35 0.158 Maximum 6260.46 11.2 6.55 132 2.45 0 0.158 Minimum 6259.36 8.3 6.31 116 1.35 0 0.104 Average 6259.88 10.0 6.44 123 1.80 0.123 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 1999 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 6261.1 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 6.40 159 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 Maximum 6269.2 10.2 7.25 202 5.7 11 9.220 Minimum 6257.3 4.7 5.70 59 0.7 3 0.070 Average 6263.2 8.9 6.65 120 1.8 7 1.147 #Years 24 24 24 24 24 13 24 SOUTH TAHOE PUBLIC UTILITY DISTRICT 3/8/2016 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 01/13/15 6259.50 8.0 6.55 220 2.32 3.54 04/23/15 6259.09 15.9 6.68 84 0.74 0.38 07/28/15 6258.69 12.7 6.67 94 0.83 0.39 10/14/15 6258.50 0.0 Maximum 6259.50 15.9 6.68 220 2.32 0 3.54 Minimum 6258.50 0.0 6.55 84 0.74 0 0.38 Average 6258.95 9.2 6.63 133 1.30 1.44 4 4 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 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 Maximum 6266.8 12.3 6.63 696 8.2 15 7.45 Minimum 6259.0 8.7 6.16 105 1.3 6 0.17 Average 6263.0 10.1 6.38 310 3.6 8 2.22 #Years 24 24 24 24 24 13 24 SOUTH TAHOE PUBLIC UTILITY DISTRICT 3/8/2016 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 01/13/15 6254.22 5.7 6.77 634 20.6 2.32 04/23/15 6254.74 9.3 6.87 595 20.5 2.77 07/28/15 6254.06 9.8 6.89 614 20.7 2.33 10/14/15 6252.95 11.2 6.74 624 21.9 2.56 Maximum 6254.74 11.2 6.89 634 21.9 0 2.77 Minimum 6252.95 5.7 6.74 595 20.5 0 2.32 Average 6253.99 9.0 6.82 617 20.9 2.50 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 Maximum 6258.0 9.0 7.17 1310 20.9 23 43.39 Minimum 6254.0 6.7 6.76 615 2.9 14 2.50 Average 6256.5 7.9 6.89 802 8.3 20 10.85 #Years 24 24 24 24 24 13 24 SOUTH TAHOE PUBLIC UTILITY DISTRICT 3/8/2016 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 Maximum 0.00 0.0 0.00 0 0.0 0 0.000 Minimum 0.00 0.0 0.00 0 0.0 0 0.000 Average 0 0 0 0 0 0 0 Mean Sea Temp EC Chloride COD NO3-N Year Level C pH umhos mg/L mg/L mg/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 64.5 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 Maximum 0.0 21.9 9.47 713 108.9 192 1.240 Minimum 0.0 3.0 3.37 174 20.2 9 0.040 Average 13.3 7.21 518 56.4 53 0.293 #Years 0 16 17 17 16 16 16 WATER LEVEL Mean Sea Level 6295 6290 6285 • 6280 m 6275 LL 6270 6265 6260 6255 Control — w—MW01.5---&--MW02 —MW03 NITRATE -NITROGEN 30 25 20 J m 15 E 10 5 �—Control tMW01.5 -- —MW02 tMW03 ERB and Plant Monitoring Wells WATER LEVEL Mean Sea Level 6290 6285 • 6280 6275 6270 m 6265 m LL 6260 6255 6250 6245 6240 tMW04—f—MW07 tMW08 umhos mg/L 0 8 8 8 8 8 § g 8 8 8 0 0 0 8 0 8 8 0 8 8 8 1984 .... - .. .. 1984 1988 1988 • 111 / 141.1141. 1 1988 I+ 1988 1990 I 1990 O C) 1992 j 1992 O_ 1994 ^ 1994 1j ♦0 1996 ` 1996 Z r O 1998 xi 40"/ 0 1998 O CP rilli N 2009 2000 G Cn 2002 , 2002 2004 2004 N N li 2006, ) I 2006 i/ \ gC 2008 sM 2008 ni w 2010 W 2010 CO 2012 2012 w, W 2014 2014, /=/�� ww,V W ,* 3 0 0 umhos mg/L 03 0 8 8 8 8 8 8 0 0 ' 8 8 8 8 8 0 8 8 8 8 8 8 8 8 (Q 1984 4 • 1984 1 \ A 1986 1986 `r. . y 1988 1988 1990 1990 1992, b. I 1992 1 r../.> f C<. 1994, ^ g 1994 01 •Z/ s 1 996 v 1998 C 1 1998 :Cili/ I li 3 2000. jC2000.21 2002 J 2002 III 2004III 2004 CM CC Z 2006 < 2006 CO CO 2008 2008 2010 2010 2012 ► 2012 ► 2014 i ► 2014 ► WATER LEVEL Mean Sea Level 6260 6275 6270 .. 6265 m m w 6260 6255 6250 6245 IS tMW11—t—MW12—m--MW13 CHLORIDES 25 20 15 J co E 10 5 0 - 0 MW11 - —MW12 MW13 Buried Monitoring Wells CONDUCTIVITY 1500 1400 1300 1200 1100 loco soo 0 O 600 JL = 700 E 7 600 500 400 300 200 100 0 — 0 MW11 —*---MW12—m--MW13 HARVEY PLACE RESERVOIR SOUTH TAHOE PUBLIC UTILITY DISTRICT HARVEY PLACE RESERVOIR DATA SUMMARY From: January 1,2015 To: December 31,2015 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 m9/I mg/I mg/I mg/I mg/I saturation 01/06/15 7.42 3.7 20.50 0.060 3.50 24.0 4.60 0.28 28.90 2.29 2.51 144 7.41 67.62 02/03/15 8.13 6.2 20.70 0.376 1.90 22.6 4.90 0.34 27.80 2.29 2.54 138 12.80 125.7 03/03/15 8.25 6.1 17.70 0.418 2.10 19.8 4.68 0.33 24.80 2.20 2.40 128 10.60 104.5 04/08/15 7.52 9.9 17.00 0.103 2.20 19.2 4.28 0.27 23.70 2.30 2.45 131 05/05/15 7.84 14.5 17.70 0.316 1.30 19.0 3.82 0.23 23.00 2.32 2.49 129 7.56 91.0 06/03/15 8.33 18.0 15.60 1.062 1.90 17.5 4.19 0.34 22.00 2.32 2.46 124 9.83 128.0 07/02/15 8.32 20.5 11.60 0.916 1.40 13.0 3.86 0.80 17.60 2.62 2.63 113 7.83 105.4 08/11/15 7.89 18.8 9.30 0.254 3.10 12.4 3.84 0.65 16.90 3.39 3.44 112 4.77 62.4 09/02/15 8.43 17.8 10.30 0.855 4.80 15.1 5.02 0.79 20.90 3.15 3.72 115 8.33 107.3 10/06/15 7.78 15.1 13.10 0.213 3.10 16.2 6.87 0.61 23.70 3.20 3.43 114 6.01 72.7 11/03/15 7.45 9.6 13.90 0.070 2.50 16.4 5.96 0.40 22.80 2.79 2.96 120 6.31 68.0 12/03/15 6.97 4.3 15.30 0.017 3.80 19.1 6.07 0.33 25.50 2.80 3.44 124 12.65 119.4 Maximum 8.43 20.5 20.70 1.062 4.80 24.0 6.87 0.80 28.90 3.39 3.72 144 12.80 128.0 Minimum 6.97 3.7 9.30 < 0.017 1.30 12.4 3.82 0.23 16.90 2.20 2.40 112 4.77 62.4 Average 7.86 12.0 15.23 0.388 2.63 17.9 4.84 0.45 23.13 2.64 2.87 124 8.55 95.6 #Years 12 12 12 12 12 12 12 12 12 12 12 12 0 11 11 SOUTH TAHOE PUBLIC UTILITY DISTRICT HARVEY PLACE RESERVOIR DATA SUMMARY From: January 1,2015 To: December 31,2015 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 01/06/15 3.63 54.2 281 2.24 3.60 590 18.4 56.6 3.97 3.12 33.5 60 02/03/15 8.69 53.4 269 15.70 6.80 571 16.0 55.4 3.91 3.22 39.0 0 03/03/15 10.30 50.6 249 6.85 4.30 518 17.0 53.0 3.74 3.03 41.5 0 04/08/15 2.79 49.2 262 1.54 2.30 537 16.1 52.0 2.48 3.19 44.3 0 05/05/15 4.03 51.0 257 1.88 2.00 526 16.9 51.2 4.12 2.90 45.0 0 06/03/15 11.70 51.5 263 11.20 4.80 499 17.1 51.7 4.27 2.90 46.5 0 07/02/15 5.92 52.7 266 3.82 2.70 511 17.4 50.8 4.09 2.85 42.5 0 08/11/15 15.70 52.7 274 11.60 7.30 520 18.8 52.2 4.29 2.82 28.2 0 09/02/15 50.50 55.2 286 146.00 55.00 516 19.7 58.6 5.02 3.05 11.0 0 10/06/15 6.45 52.6 280 10.60 7.00 529 18.4 53.1 4.50 2.88 11.0 0 11/03/15 3.18 50.3 263 2.97 2.60 521 18.7 52.7 4.49 2.84 19.5 0 12/03/15 15.30 52.5 272 532.00 31.00 565 21.4 53.2 5.55 2.65 26.8 0 Maximum 0.0 50.50 55.2 286 532.00 55.00 590 21.4 58.6 5.55 3.22 46.5 0 60 Minimum 0.0 2.79 49.2 249 1.54 2.00 499 16.0 50.8 2.48 2.65 11.0 0 0 Average 11.52 52.2 269 62.20 10.78 534 18.0 53.4 4.20 2.95 32.4 5 #Years 0 12 12 12 12 12 12 12 12 12 12 12 0 12 SOUTH TAHOE PUBLIC UTILITY DISTRICT HARVEY PLACE RESERVOIR DATA SUMMARY From: January 1,2015 , To: December 31,2015 Coliforms Fecal Air Algae Weeds Total Fecal/E. coli Strep Temp SO4 Boron Date MPN MPN MPN C mg/L mg/L Comments 01/06/15 No No 1,414 8.6 9.0 23.7 0.25 02/03/15 yes yes 1,414 25.9 17.2 22.3 0.26 03/03/15 No Yes > 2,419 2 0.4 20.7 0.19 04/08/15 No No 1,414 14.6 6.0 19.9 0.34 05/05/15 No No > 2,419 6.3 4.0 19.8 0.17 06/03/15 Yes Yes > 2,419 21.3 18.1 20.7 0.17 07/02/15 Yes Yes > 2,419 5.2 27.0 19.5 0.21 08/11/15 Yes Yes 387 16.1 17.5 17.4 0.15 09/02/15 Yes Yes 2,130 47.1 17.9 18.2 0.21 10/06/15 Yes Yes 9,880 34.5 18.8 17.5 0.23 11/03/15 No Yes > 24,192 90.7 2.2 20.6 0.23 12/03/15 No No > 241,920 648.8 12.6 20.8 0.26 Maximum > 241,920 648.8 0.0 27.0 23.7 0.34 Minimum < 387 < 2.0 < 0.0 0.4 17.4 0.15 Average 24,369 76.8 12.6 20.1 0.22 #Years 12 12 12 12 0 12 12 12 SOUTH TAHOE PUBLIC UTILITY DISTRICT HARVEY PLACE RESERVOIR DATA SUMMARY From: 1989 To: 2015 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 7.80 11.1 15.53 0.223 1.65 16.82 2.85 0.32 19.99 3.16 3.18 118 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 17.90 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 Maximum 8.41 14.5 17.37 1.456 17.90 19.57 9.93 0.72 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 7.90 12.3 13.27 0.496 2.78 15.25 2.75 0.38 18.38 2.47 2.69 110 0.062 7.81 88.11 #Years 27 27 27 26 25 27 27 27 27 27 27 27 12 27 27 SOUTH TAHOE PUBLIC UTILITY DISTRICT HARVEY PLACE RESERVOIR DATA SUMMARY From: 1989 To: 2015 Water COD BOD Cr 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 27.7 4.19 48.8 221 11.53 5.25 450 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 Maximum 47.0 11.52 93.5 369 62.20 18.87 635 19.6 92.9 4.20 5.04 45.44 491 17 Minimum 18.6 2.93 42.6 205 4.81 3.53 397 14.4 22.4 3.26 1.37 32.40 303 0 Average 32.1 6.24 57.2 255 15.22 6.55 494 16.4 50.7 3.62 2.98 39.42 397 5 #Years 23 27 27 27 27 27 27 27 27 27 27 27 2 27 SOUTH TAHOE PUBLIC UTILITY DISTRICT HARVEY PLACE RESERVOIR DATA SUMMARY From: 1989 To: 2015 Coliforms Fecal Air Algae Weeds Total Fecal/E coil 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 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 46 194 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 Maximum 24,369 187 422 20.3 42.8 0.37 Minimum 2 2 2 5.9 13.0 0.08 Average 1293 38 95 13.4 20.7 0.23 #Years 0 0 27 27 26 27 26 26 HARVEY PLACE RESEREVOIR NO3-N&NH3-N Total Phosphorus 20 6 18 5 16 14 4 12 –J -en- 10 - E 3 8 - 2 6 - . - 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 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 t NO3-N t NH3-N ---k—Total Phosphorus Linear(Total Phosphorus) Chlorides Total Dissolved Solids 140 500 450 120 - 400 100 - 350 J 80 J 300 E E 250 �— — w=--r -w— 60 200 40 - - 150 100 20 - - 50 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 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 —A—Chlorides Linear(Chlorides) —A—TDS Linear(TDS) 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 01/01/12 1,138 2,662 02/01/12 1,448 2,352 03/01/12 1,773 2,027 04/01/12 1,812 1,988 05/01/12 2,044 1,756 06/01/12 2,080 1,720 07/01/12 1,357 2,443 08/01/12 643 3,157 09/01/12 80 3,720 10/01/12 80 3,720 11/01/12 217 3,583 12/01/12 519 3,281 01/01/13 940 2,860 02/01/13 1,256 2,544 03/01/13 1,582 2,218 04/01/13 1,836 1,964 05/01/13 2,090 1,710 06/01/13 2,259 1,541 07/01/13 1,724 2,076 08/01/13 1,070 2,730 09/01/13 416 3,384 10/01/13 85 3,715 11/01/13 222 3,578 12/01/13 472 3,328 01/01/14 693 3,107 02/01/14 1,043 2,757 03/01/14 1,357 2,443 04/01/14 1,646 2,154 05/01/14 1,864 1,936 06/01/14 1,966 1,834 07/01/14 1,528 2,272 08/01/14 866 2,934 09/01/14 235 3,565 10/01/14 80 3,720 11/01/14 220 3,580 12/01/14 410 3,390 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 E:HPRWPR Current Storage-Lahontan_Report.ds 4,000 3,500 3,000 2,500 m w m L a 2,000 1,500 1,000 500 0 Harvey Place Reservoir Recycled Water Storacie t Slome 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 Ob'ectives Target Value Target value Indicator Long Term Interim Total Phosphorus, mg/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, mg/L 4.0 Secchi Depth, meters >_ 2 >_ 2 feet >_ 6.6 >_ 6.6 Chlorphyll a, mg/m3 <_ 10 <_ 10 Carlson Trophic 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. Stevens Lake -; ICR-01 r ICR-06` > ICR-07 ICR-08 n ICR-03 ICR-09 Indian Greek Reservoir;ICR-10 0` ICR-11.'' ICR-05 r ,MICR-12 M�Af� ik ( t 2013 Google �t �(?�C' � ���f �' SOUTH TAHOE PUBLIC UTILITY DISTRICT INDIAN CREEK RESERVOIR DATA SUMMARY 2016 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 mg/I mg/I %SAT mg/m' ft. mq/L mg/I mq/I mq/l mg/I mg/I mg/L mg/I 01/13/15 ICR-01 0.0 02/11/15 ICR-01 0.9 0.039 11.05 88.0 19.0 5.45 0.059 < 0.020 0.892 0.951 0.042 < 0.010 0.993 < 0.010 02/11/15 ICR-01 21.0 0.049 10.85 85.4 18.0 0.052 < 0.020 0.988 1.040 0.038 < 0.010 1.080 < 0.010 02/11/15 ICR-01 36.0 0.040 10.73 84.3 18.0 0.067 < 0.020 0.905 0.972 0.038 < 0.010 1.010 < 0.010 02/11/15 ICR-03 0.9 0.038 11.00 87.6 18.0 5.53 0.063 < 0.020 0.901 0.964 0.036 < 0.010 1.000 < 0.010 02/11/15 ICR-03 21.0 0.053 10.66 83.8 16.0 0.067 < 0.020 0.894 0.961 0.037 < 0.010 0.998 < 0.010 02/11/15 ICR-05 0.9 0.044 10.86 86.4 17.0 5.82 0.063 < 0.020 0.957 1.020 0.045 < 0.010 1.060 < 0.010 03/18/15 ICR-01 0.9 0.035 9.69 84.7 11.0 6.30 0.023 < 0.020 0.889 0.912 0.010 < 0.010 0.922 < 0.010 03/18/15 ICR-01 18.0 0.043 9.42 81.7 8.0 0.031 < 0.020 0.944 0.975 0.010 < 0.010 0.985 < 0.010 03/18/15 ICR-01 36.0 0.044 9.24 79.6 7.0 0.031 < 0.020 0.979 1.010 0.010 < 0.010 1.020 < 0.010 03/18/15 ICR-03 0.9 0.038 9.58 83.5 10.0 6.62 0.024 < 0.020 0.884 0.908 < 0.010 < 0.010 0.908 < 0.010 03/18/15 ICR-03 12.0 0.043 9.44 81.6 8.0 0.031 < 0.020 0.939 0.970 < 0.010 < 0.010 0.970 < 0.010 03/18/15 ICR-05 0.9 0.037 9.40 81.0 11.0 6.92 0.037 < 0.020 0.873 0.910 0.013 < 0.010 0.923 < 0.010 04/21/15 ICR-01 3.0 0.034 10.54 98.7 7.0 6.05 < 0.020 < 0.020 0.867 0.887 < 0.010 < 0.010 0.887 < 0.010 04/21/15 ICR-01 17.9 0.043 10.71 99.1 11.0 < 0.020 < 0.020 0.914 0.934 < 0.010 < 0.010 0.934 < 0.010 04/21/15 ICR-01 36.0 0.040 9.70 88.3 8.0 < 0.020 < 0.020 0.871 0.891 < 0.010 < 0.010 0.891 < 0.010 04/21/15 ICR-03 2.6 0.035 10.74 100.6 10.0 5.20 < 0.020 < 0.020 0.903 0.923 < 0.010 < 0.010 0.923 < 0.010 04/21/15 ICR-03 18.0 0.043 10.15 91.5 6.0 < 0.020 < 0.020 0.980 1.000 < 0.010 < 0.010 1.000 < 0.010 04/21/15 ICR-05 0.9 0.035 10.54 98.7 9.0 5.30 < 0.020 < 0.020 0.939 0.959 < 0.010 < 0.010 0.959 < 0.010 05/20/15 ICR-01 0.5 0.024 10.60 100.6 < 2.0 15.04 < 0.020 < 0.020 0.744 0.764 < 0.010 < 0.010 0.764 < 0.010 05/20/15 ICR-01 18.1 0.031 10.60 99.8 3.0 < 0.020 < 0.020 0.777 0.797 < 0.010 < 0.010 0.797 < 0.010 05/20/15 ICR-01 36.2 0.035 9.50 88.8 < 2.0 0.020 < 0.020 0.820 0.840 < 0.010 < 0.010 0.840 < 0.010 05/20/15 ICR-03 0.5 0.026 10.50 100.1 < 2.0 15.10 < 0.020 < 0.020 0.754 0.774 < 0.010 < 0.010 0.774 < 0.010 05/20/15 ICR-03 21.1 0.046 10.50 97.9 2.0 < 0.020 < 0.020 0.844 0.864 < 0.010 < 0.010 0.864 < 0.010 05/20/15 ICR-05 0.5 0.036 10.50 99.2 < 2.0 < 0.020 < 0.020 0.795 0.815 < 0.010 < 0.010 0.815 < 0.010 06/17/15 ICR-01 0.9 0.026 8.97 98.6 4.0 17.10 < 0.020 < 0.020 0.712 0.732 < 0.010 < 0.010 0.732 < 0.010 06/17/15 ICR-01 18.0 0.028 8.97 97.6 4.0 < 0.020 < 0.020 0.711 0.731 < 0.010 < 0.010 0.731 < 0.010 06/17/15 ICR-01 36.0 0.039 8.37 89.9 3.0 0.024 < 0.020 0.739 0.763 < 0.010 < 0.010 0.763 < 0.010 06/17/15 ICR-03 0.9 0.026 8.94 98.3 4.0 15.04 < 0.020 < 0.020 0.736 0.756 < 0.010 < 0.010 0.756 < 0.010 06/17/15 ICR-03 21.0 0.031 9.04 97.3 3.0 < 0.020 < 0.020 0.708 0.728 < 0.010 < 0.010 0.728 < 0.010 06/17/15 ICR-05 1.0 0.026 8.98 98.7 3.0 < 0.020 < 0.020 0.704 0.724 < 0.010 < 0.010 0.724 < 0.010 07/14/15 ICR-01 0.5 0.200 12.14 137.2 200.0 3.20 < 0.020 < 0.020 4.030 4.050 < 0.010 < 0.010 4.050 < 0.010 07/14/15 ICR-01 18.0 0.030 8.90 96.4 9.0 0.046 0.021 0.716 0.762 < 0.010 < 0.010 0.762 0.025 07/14/15 ICR-01 36.0 0.045 7.82 84.0 4.0 0.107 0.043 0.712 0.819 < 0.010 < 0.010 0.819 0.012 07/14/15 ICR-03 0.5 0.141 12.13 136.6 240.0 3.80 < 0.020 < 0.020 3.230 3.250 < 0.010 < 0.010 3.250 < 0.010 07/14/15 ICR-03 21.0 0.024 8.37 90.3 6.0 0.029 < 0.020 0.696 0.725 < 0.010 < 0.010 0.725 < 0.010 07/14/15 ICR-05 0.5 0.056 10.75 120.8 84.0 7.20 < 0.020 < 0.020 1.250 1.270 < 0.010 < 0.010 1.270 < 0.010 08/12/15 ICR-01 0.9 0.038 9.87 107.3 14.0 8.75 < 0.020 < 0.020 0.966 0.986 < 0.010 < 0.010 0.986 < 0.010 08/12/15 ICR-01 18.0 0.040 9.18 98.8 7.0 < 0.020 < 0.020 0.886 0.906 < 0.010 < 0.010 0.906 < 0.010 08/12/15 ICR-01 38.0 0.044 8.69 92.7 4.0 < 0.020 < 0.020 0.825 0.845 < 0.010 < 0.010 0.845 < 0.010 08/12/15 ICR-03 0.9 0.036 9.61 104.3 11.0 8.25 < 0.020 < 0.020 0.887 0.907 < 0.010 < 0.010 0.907 < 0.010 08/12/15 ICR-03 21.0 0.034 8.75 93.1 5.0 < 0.020 < 0.020 0.854 0.874 < 0.010 < 0.010 0.874 < 0.010 08/12/15 ICR-05 1.0 0.044 9.30 99.5 20.0 6.50 < 0.020 < 0.020 1.000 1.020 < 0.010 < 0.010 1.020 < 0.010 09/01/15 ICR-01 0.9 0.047 10.22 110.4 24.0 7.35 < 0.020 < 0.020 0.919 0.939 < 0.010 < 0.010 0.939 < 0.010 09/01/15 ICR-01 17.8 0.047 8.81 94.1 15.0 0.022 < 0.020 0.957 0.979 < 0.010 < 0.010 0.979 < 0.010 09/01/15 ICR-01 36.0 0.056 7.03 74.6 13.0 0.065 0.043 0.932 0.997 < 0.010 < 0.010 0.997 0.014 09/01/15 ICR-03 0.9 0.050 10.32 111.5 23.0 7.65 0.054 0.043 1.176 1.230 < 0.010 < 0.010 1.230 < 0.010 09/01/15 ICR-03 18.0 0.044 9.79 104.2 14.0 0.057 0.044 0.897 0.954 < 0.010 < 0.010 0.954 < 0.010 09/01/15 ICR-05 1.0 0.051 10.33 111.1 26.0 5.40 0.048 0.038 1.032 1.080 < 0.010 < 0.010 1.080 < 0.010 10/13/15 ICR-01 1.1 0.051 9.52 95.0 29.0 7.85 < 0.020 < 0.020 1.040 1.060 < 0.010 < 0.010 1.060 0.011 10/13/15 ICR-01 18.0 0.048 9.40 93.5 18.0 < 0.020 < 0.020 1.130 1.150 < 0.010 < 0.010 1.150 < 0.010 10/13/15 ICR-01 36.0 0.049 8.95 88.8 16.0 < 0.020 < 0.020 1.020 1.040 < 0.010 < 0.010 1.040 < 0.010 10/13/15 ICR-03 1.2 0.049 9.36 94.3 22.0 7.64 < 0.020 < 0.020 0.942 0.962 < 0.010 < 0.010 0.962 < 0.010 10/13/15 ICR-03 21.3 0.043 8.29 81.4 11.0 0.020 < 0.020 1.010 1.030 < 0.010 < 0.010 1.030 < 0.010 10/13/15 ICR-05 1.1 0.042 8.90 89.2 14.0 7.10 0.020 < 0.020 0.908 0.928 < 0.010 < 0.010 0.930 < 0.010 11/18/15 12/15/15 ICR-01 Maximum 36.2 0.200 12.14 137.2 240.0 17.10 0.107 0.044 4.030 4.050 0.045 < 0.010 4.050 0.025 Minimum 0.5 0.024 7.03 0.0 < 2.0 3.20 < 0.020 < 0.020 0.696 0.724 < 0.010 < 0.010 0.724 < 0.010 Average 12.8 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 #Samples 54 54 54 55 54 25 54 54 54 54 54 54 54 54 SOUTH TAHOE PUBLIC UTILITY DISTRICT INDIAN CREEK RESERVOIR DATA SUMMARY 2016 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 mq/I mg/I mg/I mg/I NTU uS/cm mg/I mg/I mg/I ft. Cover 01/13/15 ICR-01 0.0 90 02/11/15 ICR-01 0.9 5.6 8.14 53.1 1.51 76 4.28 4.40 111 0 02/11/15 ICR-01 21.0 5.2 8.07 53.1 1.50 71 4.92 4.10 111 02/11/15 ICR-01 36.0 5.1 8.10 52.9 1.53 78 4.64 4.50 111 02/11/15 ICR-03 0.9 5.7 8.12 52.7 1.51 81 4.32 3.90 111 02/11/15 ICR-03 21.0 5.1 7.85 52.7 1.50 80 4.88 4.60 111 02/11/15 ICR-05 0.9 5.6 8.04 52.9 1.49 78 4.50 4.40 111 03/18/15 ICR-01 0.9 9.4 7.89 1.57 3.30 113 0 03/18/15 ICR-01 18.0 9.1 7.70 1.53 3.60 113 03/18/15 ICR-01 36.0 8.8 7.56 1.53 3.80 114 03/18/15 ICR-03 0.9 9.3 7.64 1.52 3.00 113 03/18/15 ICR-03 12.0 8.9 7.79 1.52 3.50 113 03/18/15 ICR-05 0.9 8.8 7.62 1.53 3.30 114 04/21/15 ICR-01 3.0 12.4 9.02 1.36 2.30 115 0 04/21/15 ICR-01 17.9 11.9 9.02 1.39 3.00 115 04/21/15 ICR-01 36.0 11.1 8.87 1.37 3.30 115 04/21/15 ICR-03 2.6 12.4 9.03 1.36 2.60 115 04/21/15 ICR-03 18.0 10.8 8.97 1.36 3.00 116 04/21/15 ICR-05 0.9 12.4 9.00 1.36 2.60 115 05/20/15 ICR-01 0.5 13.0 9.33 52.5 1.29 73 0.84 0.82 112 0 05/20/15 ICR-01 18.1 12.6 9.48 52.5 1.29 75 1.06 0.91 112 05/20/15 ICR-01 36.2 12.3 9.40 52.7 1.31 70 1.12 1.00 112 05/20/15 ICR-03 0.5 13.1 9.49 52.7 1.29 72 0.72 0.96 112 05/20/15 ICR-03 21.1 12.3 9.54 52.5 1.28 74 0.89 0.99 111 05/20/15 ICR-05 0.5 12.8 9.46 52.8 1.28 72 1.01 0.78 111 06/17/15 ICR-01 0.9 19.9 9.55 1.18 0.79 110 0 06/17/15 ICR-01 18.0 19.4 9.61 1.16 0.76 110 06/17/15 ICR-01 36.0 18.8 9.52 1.17 0.88 109 06/17/15 ICR-03 0.9 20.0 9.60 1.15 0.64 110 06/17/15 ICR-03 21.0 18.9 9.65 1.16 0.69 110 06/17/15 ICR-05 1.0 20.0 9.64 1.16 0.56 110 07/14/15 ICR-01 0.5 21.4 9.84 1.27 33,00 114 0 07/14/15 ICR-01 18.0 19.2 9.37 1.26 1.30 108 07/14/15 ICR-01 36.0 18.8 9.26 1.24 1.70 108 07/14/15 ICR-03 0.5 21.2 9.83 1.26 28.00 114 07/14/15 ICR-03 21.0 19.0 9.38 1.26 1.00 108 07/14/15 ICR-05 0.5 21.0 9.67 1.25 13.00 112 08/12/15 ICR-01 0.9 19.4 9.64 49.5 1.25 82 3.53 4.80 111 0 08/12/15 ICR-01 18.0 18.9 9.81 49.2 1.23 71 3.19 2.80 110 08/12/15 ICR-01 36.0 18.5 9.78 49.4 1.25 77 4.94 2.20 109 08/12/15 ICR-03 0.9 19.3 9.71 49.4 1.23 78 3.54 4.30 111 08/12/15 ICR-03 21.0 18.3 9.74 49.2 1.23 76 2.43 2.80 109 08/12/15 ICR-05 1.0 18.6 9.82 49.9 1.22 74 3.91 4.70 110 09/01/15 ICR-01 0.9 19.1 9.87 1.32 3.00 114 0 09/01/15 ICR-01 17.8 18.5 9.87 1.30 2.50 111 09/01/15 ICR-01 36.0 18.3 9.74 1.30 3.70 109 09/01/15 ICR-03 0.9 19.1 10.03 1.29 2.20 114 09/01/15 ICR-03 18.0 18.4 9.97 1.30 2.70 112 09/01/15 ICR-05 1.0 18.9 10.01 1.29 3.10 113 10/13/15 ICR-01 1.1 15.3 9.08 1.52 2.50 109 0 10/13/15 ICR-01 18.0 15.1 9.15 1.52 2.40 109 10/13/15 ICR-01 36.0 15.0 9.16 1.52 2.10 109 10/13/15 ICR-03 1.2 15.7 9.26 1.50 1.30 110 10/13/15 ICR-03 21.3 14.5 9.14 1.49 2.00 109 10/13/15 ICR-05 1.1 15.5 9.24 1.50 1.60 110 11/18/15 12/15/15 ICR-01 90 Maximum 36.2 21.4 10.03 53.1 0.0 0.00 1.57 82 4.94 33.00 116 0.00 0.00 0.00 0.00 0.00 90 Minimum 0.5 0.0 7,56 49.2 0.0 0.00 1.15 70 0.72 0.56 108 0.00 0.00 0.00 0.00 0.00 0 Average 12.8 14.3 9.13 51.7 1.35 75 3.04 3.73 111 16 #Samples 54 55 54 18 0 0 54 18 18 54 54 0 0 0 0 0 11 SOUTH TAHOE PUBLIC UTILITY DISTRICT INDIAN CREEK RESERVOIR DATA SUMMARY 2015 Coliforms Fecal Air Depth Total FecaVE.cot Strep Temp SO4 Boron Fe Mn Date Site Ft Algae Weeds MPN MPN MPN C mq/L mg/L ug/L ug/L Comments 01/13/15 ICR-01 02/11/15 ICR-01 0.9 Yes No 7.5 3.35 02/11/15 ICR-01 21.0 3.21 02/11/15 ICR-01 36.0 2.98 02/11/15 ICR-03 0.9 50 < 1 2.82 02/11/15 ICR-03 21.0 2.80 02/11/15 ICR-05 0.9 54 < 1 2.80 03/18/15 ICR-01 0.9 Yes No 2 < 1 12.0 2.42 03/18/15 ICR-01 18.0 3.35 03/18/15 ICR-01 36.0 2.60 03/18/15 ICR-03 0.9 < 1 < 1 3.11 03/18/15 ICR-03 12.0 3.09 03/18/15 ICR-05 0.9 1 < 1 4.12 04/21/15 ICR-01 3.0 Yes No 5 < 1 20.1 1.51 04/21/15 ICR-01 17.91.51 04/21/15 ICR-01 36.0 1.51 04/21/15 ICR-03 2.6 7 1 1.51 04/21/15 ICR-03 18.0 1.51 04/21/15 ICR-05 0.9 2 < 1 1.51 05/20/15 ICR-01 0.5 No No 5 < 1 14.0 2.56 05/20/15 ICR-01 18.1 2.60 05/20/15 ICR-01 36.2 2.63 05/20/15 ICR-03 0.5 3 < 1 2.62 05/20/15 ICR-03 21.1 2.52 05/20/15 ICR-05 0.5 2 < 1 2.57 06/17/15 ICR-01 0.9 Yes Yes 43 < 1 22.4 2.53 06/17/15 ICR-01 18.0 2.74 06/17/15 ICR-01 36.0 2.70 06/17/15 ICR-03 0.9 38 a 1 2.79 06/17/15 ICR-03 21.0 2.72 06/17/15 ICR-05 1.0 172 < 1 2.80 07/14/15 ICR-01 0.5 Yes Yes 14 < 1 2.43 07/14/15 ICR-01 18.0 2.99 07/14/15 ICR-01 36.0 2.99 07/14/15 ICR-03 0.5 12 < 1 2.93 07/14/15 ICR-03 21.0 2.81 07/14/15 ICR-05 0.5 2.84 08/12/15 ICR-01 0.9 Yes Yes > 2419 < 1 22.5 2.41 08/12/15 ICR-01 18.0 2.95 08/12/15 ICR-01 36.0 2.99 08/12/15 ICR-03 0.9 > 2419 < 1 3.00 08/12/15 ICR-03 21.0 2.74 08/12/15 ICR-05 1.0 > 2419 < 1 2.78 09/01/15 ICR-01 0.9 Yes Yes 411 < 1 22.4 2.46 09/01/15 ICR-01 17.8 2.61 09/01/15 ICR-01 36.0 2.59 09/01/15 ICR-03 0.9 238 < 1 2.62 09/01/15 ICR-03 18.0 2.58 09/01/15 ICR-05 1.0 276 < 1 2.59 10/13/15 ICR-01 1.1 Yes Yes 70 3 21.5 3.10 10/13/15 ICR-01 18.0 3.06 10/13/15 ICR-01 36.0 3.00 10/13/15 ICR-03 1.2 57 2 3.01 10/13/15 ICR-03 21.3 4.05 10/13/15 ICR-05 1.1 127 44 2.99 11/18/15 Data sonde broken 12/15/15 ICR-01 Frozen Maximum 36.2 > 2419 44 0 22.5 4.12 Minimum 0.5. < 1 < 1 0 7.5 1.51 Average 12.8 354 3 17.8 2.70 #Samples 54 55 55 25 25 0 8 54 0 0 0 SOUTH TAHOE PUBLIC UTILITY DISTRICT INDIAN CREEK RESERVOIR DATA SUMMARY From: 1980 To: 2015 Lake Temp Alk MBAS COD BOD CI" TDS S.S. Turb EC Ca Na Mg SAR Level %Ice Algae Weeds Year C pH mg/I mg/I mg/I mg/1 mg/I mg/1 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 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 7.60 40 0.02 14.7 1.50 0.9 64 1.92 1.73 81 9.70 5.51 1.77 0.42 27.00 0 Average 12.8 8.64 59 0.03 31.2 4.33 33.7 189 12.74 7.23 289 28.47 43.79 2.41 2.01 46.66 6 #Years 36 36 36 20 32 28 36 36 36 36 36 23 23 23 23 16 30 0 0 Note:Chro SOUTH TAHOE PUBLIC UTILITY DISTRICT INDIAN CREEK RESERVOIR DATA SUMMARY From 1980 To: 2015 Coliforms Fecal Air Total Fecal/E.coli 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 13.6 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 Maximum 584 13 419 24.3 34.33 0.13 1,237 82 Minimum 6 2 2 8.2 1.21 0.01 169 20 Average 176 4 74 16.0 5.50 0.03 515 41 #Years 33 33 32 36 25 22 14 14 Note:Chro SOUTH TAHOE PUBLIC UTILITY DISTRICT INDIAN CREEK RESERVOIR DATA SUMMARY From: 1980 To: 2015 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/m' ft. mg/L mgA mgA mgA mgA mgA 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 9.405 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 13.3 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 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 0.035 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 0.181 8.41 95.6 13.5 6.79 0.518 0.061 1.623 2.137 1.242 0.056 3.410 0.077 #Years 36 36 36 16 17 36 36 36 36 36 36 36 36 Note:Chromogenic Substrate test for Total Coliform and E.coli begun in November 2014 INDIAN CREEK RESEREVOIR Total Phosphorus Chlorophyll a 0.20 50 40 0.15 - -- • 30 -J-64 E 0.10 E co E : 20 oos . _AIL 0.00 . . . , . . 0 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 --•-- Series1 —&—Chlorophyll a Linear(Chlorophyll a) Secchi Depth NO3-N&NH3-N 0 - 10 - 5 : 9 : 10 . 8 -c 15 — w 20 - co 5 2 25 '. E 11\ 4 • % 30 . 3 . LL 35 : --. 2 : 40 : - 1 pa-- -= -- 45 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 8081 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 - A--- NO3-N • - NH3-N --•--Secchi Depth Linear(Secchi Depth) INDIAN CREEK RESEREVOIR Chlorides Total Dissolved Solids 150 700 - 140 650 130 600 120 — 550 110 500 100 450 , 90 400 . 80 Co" : -i E 60 E 300 50 250 : 40 200 . 1411011 ,- 30 --- 150 '. 20 100 10 - - - 50 0 80 81 82 83 84 85 8687 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 0 '80 81 82 83 84 85 86 87 8889 90 91 92 93 94 95 96 97 98 99 00 01 02 0304 05 06 07 08 09 10 11 12 13 14 15 —a—Chlorides Linear(Chlorides) --1--TDS Linear(TDS) pH 12 11 10 9 8 7 6 5 r 4 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 --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 2015 and the yearly averages since monitoring was initiated. Trends are plotted for parameters indicative of wastewater. Groundwater, surfacewater and soil quality data for 2015 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 wells (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 ldexx Colilert QuantiTray method (chromogenic 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. Surfacewaters 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-Phosphate-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 lower 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 ldexx Colilert Quanti-Tray method (chromogenic substrate). Soils In 2015 the Regional Board removed S8 from the list of soil sites to monitor. Sample Sites Alpine County Monitoring Wells ACMW-01AW 38.766952 -119.781561 Below Main Dam Monitoring Well ACMW-01BE 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 t Neddenripp's Monitoring Well ACMW-26 38.840602 119.769677 Road between Brooke's&Neddenriep c 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 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 1st 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 -119.969390 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 Bail 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 MW11 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 MW13 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 D:\Lahontan\Semple Sites\Lahontan Report-Sample Sites.xls Parte 2 of 2 • 1 1....,./ Ii , ').,.....4 inu • -r1:, r 't L u .:.:•.,!'"tow 1, .r ' t wN ��-�' 1 -' f ..'E r 91 �r d 7 �{h[�; l! r i c� ;' 1 !! 1-71.! `�- ter'. `��--,, +,,,:,..,4,,,1„.Xn 1 r• r .-r �f, hp1t' it !}F ll 1C.4^ ' •d ,`` �It �. 1{. t (; • • .{.y ` ,-. r'`- J +t.i xyY ,1�;, 11 „.31„„.1,,,,,.....4 'S i 7,A d 2T`'! ,., . a --f. % ,•",• sty I'Q."' 1 ".i .•''.',!•7A6,-r. b .. I0),I,rt•'\, `- 7;ht t r• Y.'_r r'"^c.+.4 k•4•2$!,.. '2$!,. ..1-. I, I .{ 1 :1 :::'''''',...4 {! di. it .q:'*-. lK7, �c r xt'; `� :21 y +�.r e.'1,, f , • —•I •s e + n1 {.N. Ny V .. x ''}'. 4i F�� {r t 6r '' • ¢Y Ff ,.. -k%it , n .;'.,4-.4',',* fy 1 1�'. -; 1 ) [ A 11j <I . E I \ e u 1 ,q •i 1 I y,,,,d,'„211,0 xr7 a��.” G ''t_.. j '4,A �' ti �,. .gar+r�t � `�7 q'� �.� 'Yu. � a1F >,r 5t n F° � _ � )titie �S,�t f- '�!t ri7E' [!{pitId'6A/J 4 %r!� y -°f, :,,e i i 's M ys if J;k t •f1j F M , t!? 1 R !J! kA a U "•, 7 1 c i ! 1 1 ,,i/,J { a 1, ^� ,fir t, t rvyv,�'.r -1y!,,. < OW �,�,�' 7l• Il,A • L >- alfgG'��'< 1 °'"3�` x 7'r?. 5 + f .t 1 'l +i$ 4 r �'� _/' E t.al'j ,{ erue l z k i . 14 1 alioL f r, % •Ir r a y iC� tr, • ,rc g . � a; vp. T �yi 1 ., Tlx ''21.-.7,1717,1.,•,'-'':,•::: c���wemlm [ t P )'r. `> �' s: !�., �(yp4,LA y 7 ns n ,rr xyl�a�y�+ n'.0,'• i i i ��t1 tn. Rt pegqea.�i.t{I #�. C .si: {rk :i IF •HY �J rk9 1l 'frl_ �J - -a ,r.' v,lq.---.-.:- `1 1 f.yt� �Y.t� `". r '. �`' 11 W 7.14..' . " .^ •fir' , y_t e /,,L:N k ` y,..4i 'f I N.^1,,,, v • -...:1...-4k �..._-['W_."--�—+.3 •1i.� •[iii.. t .e,j','.4:- , ,Y�Nil ,. h�F'' C 0/ t4s.a—,`',':-•\1:4'4‘t` ` '.i +,.ti''.,' ` _- i O p , 1' ��� c4� 4,,,,.';,?'Jt � air' J� ��' kak i "`xk+ `� ���y 1 a fir. n1� / ,..i`t. c+ 0..,-4.4.,0'.1-•,'r ` t, -i ss•.! 'a`.1 w;\$�'4 s +�. ... \ '� \' _.y ,.• ,t ,{•?F` ,tom G ./ a cf r�-T�'q '` • p`e.\� Y t"'f ` � j1' ' ^ '' �..Fx . !.,lJf pt^.,,,.rY ..'} ,4 a• A S I1 i f" , * .4 ,;� `�� , •< , 4 -Ave; k<I p x i .e°d} y/4�,'/i r lS , }i" . lj t,� rr.} ` /s "`("F:.•7 + y. i P i,,:.;14'{ .Elly[ /,+r I lVP,.. r r9,,(1,1 A( 1_I` .rt ,.41 G',gyk✓ F> S A,...'_.,-k� `, . .. .9.-...-9---'s" tl... ��: s.6 Ait, �1 F �: tit''''''.'7,7',,_A S `• ei` '�zRt4%r {�,,,,_r -3'-Fjl of ��' t { O ; :. �O •i •r'' ,.yY' tr A. i a "4 nU{'� '4 c: > (;t_ I .\ ♦ 1---",S i ': lea l,at r $ +� ' � 4..=!ya, ,rig> <3 Be,,,,.....i,,,,,,,..14,-4 ` R ti, ;, , ,.....L1-'1fj S •n yS. v '�., 3N � '^•^�s - � L .t 11 i`v"- . t ! 4 � _s 1. y"".:.' 1 ' �.. '.,',.',.*"'%..r.',..,4:-:- 77'�uy i 7 c � ��t ,,,i.,: F• ',,i4.-e,,, °yZ..1t1.44$Sly,it y ' ( t. 0 -„I. f ?� .� 7. C,d �i .. �, •v L fry ,6T Lv'•t , a"3..,•`�•,r ';y�Y\l _ �,,.--,/ { eo' F"-�� m �k.�a e �' t^�1 .�_'' t'ls`j 's ''".rGl 1'' `��t`� t `. 1 ; ..�`` 1 �r }tl'rlrCrr+ c4r'Mt{,.Y F ifu"4, s I s' '{' `� w! •! `Sri g,• • ♦ tl a i r (! f"«err fix,{t 2 i i x" _ eu 11 `` \ - '�, • " ( ; 1 i 1 I {tt r ;ts45' •`�. p3,,,t2.3„,00;4 .' t4. L „o- 4704 7r} 7 tq, ,� \ "'"3" S 1'� �y}h '):Epu -h G)» ( �'.. +i \ ..nski! ♦ r K q/ # s •s is x r -,' •4r Aye( t 1\ , 1 . ) � t ,f r9h h'r tiY 1 { ''`�` f'li't �i:\^1 V W` ` ia^i '1'' -1 WI �,rr' 11 f t (Wit- tlk s & ; f4"4s^ 40-1, 24 yI+f_ t, �✓c-ice'--}— —i � t. r- r}F rr<r�y":.4.: ::-',14r-g!,....';„..-,. 4 ° t , ' a "� }..i * .. {.i."- 7 � '"I ,, i 'ib i i _ ar } tr i,41:4yJ�1y - s i.0 .•I i f:i',s( lal /, i ! F ` ri fr c_}, l tyi 1a Ir'> o{� c� ftl ` a`.��yr iyr'/! I%~ d i ...1k,-..-x . r' 'n!}.,.:,-,,.?:,1404,t. 1( , t ,t y 4, r r9 4:� 'r'fl�'tl f 1•! r �. ',I L �o . • 4.-.,,..roti:fr,„,,.. � •� 1� �r• a �li i •/.1.r1�i ,u. `� a ice. 4.^., .. 1:r, >1S{s a .Yn•u,,' '§`.,..zi' • ... 7 r s s. ,s�,N ',.., 1 G''•-... rj j.�i'ii / } `i r3'j -+."'�, n 7Y - p cS ,, n- t:.,.4,10.,:6,,,,.,.m ,t `a.\ • p 4yCte • I . i / t r `.a ' .:,V3,4,*,:*'. roll' S. ; 1 7H 4-. Pn r 1' �.: -\ I j • �' 75 !— • / t $ :Al..i.'k';`Y= . fi�� ,r-w `�" { 4 4 I., '''''''''''''''''4111.4ai' �./J w \ i:•�y1 .',I\ -•-r �--i,� \' 1li r y 1 r b �•:31:-.24;.? i l� � ni'cpt��`vlb T�ay6," k"g32t+,."ri• r •�'f M �S 'r ._ -/� •alt:`mow f� 9 • a. ` k wytl' .'.0'‘,„..•• T �Z '\ar J�� e., f.,4., � )�. "`.ir , I Ka t 1' ' 1 1 ' 1 If•- . (' 1(.:74-r, \> 1 ...---1.44,_,.._,;;:.'74.4:. yrs L ,,,<I 3 ti ,`''{ti dt/;'s/ ��' � J l) ', + ` 1 I ! !s �t .` tk/x'11 % 4. V 1• h A!r ' t.,r• ' }Fr..,-,:-..,.-;:,,, l rr s .7..�f •}�t[ `9 <� SyA,I/� 7,�r li• +yy/„<i /� fF4 Y I + �_ki 0-ontl t y ,r+ f1i 1i•� 7 i iVilf {':J r '��r��'• • "GW Oil I 7. 1. i{ ,a ( ' .,,,,,,.t • > c.y�` ,11 ',./..,f./..1 i J • / ?�% ,r / kr r•+ni+• '.' 1 5 ^f`,`-�- F pp-• yj J]'r r••;!'s ' :4-,.... i � ,. 1 1� f / 'J4. • .pa..t„r �{ �^,t�.st •tY •,a'-..--A 1 /'!�/11j__.'' 'rl "�,ri`. :i .. •ti1,S wri o^�,, t f _+•/'1' �I! I. i 7 �fJi/ 1 7........:4.........,.... :- '`,.t,! , 1 I- sh,. +r,r'/rr rk r 11� 9) -tF' Fr��' II / *4;:47.:745- j rr ,3 ..., -�� s.. - '�ikc ,t.. J t,; R.l .�5 ,, y� t�u ^I.'./•r,� ti--'/' ,-..r, �' \,, +moi.: ',' /J l W-03 / ;t �fi 3 U -2 f�' 1. +lr , ;Vie' f I ) I i. w1 •w \,, �E .1J1 '' ti`s. 14 a ) , l / r 1 s 1,-,../1 .1.S`',,,.r m , ',&,' '',/,';..,,,,. r >K v, r t t r/ ,/ ,k ell ,f 0.X • ,r}1�S<e /4mr. , /' ! v• W OBV f ! r C'_.., `�( 1�i' ! F �?; a 1 i[ f • ,� fY)h ,f�' * r Nxar rt ��/i/".,.,...`, .._ f 11 �,�� . y. -. § t. , i ��y a c.n 5 • /sf yr .''�"p,t \ ji I ,K7...., ..z.' .•..k (.y ,4-3`-,-`- tt•. }4 14't�tY " i )4 `,l .X rv,.L h�+ , .. ) wa iT~1,r L' k • p a+ ' kge,, ,° l ! ! `+'".'�°'i �, JI-�.'>,�. ,v:: a f • 7 f"'7 a` ` 1 G. off fle `,r a ' 3W., i, y -_�+.•„_ CM ,. ! F11t� y / 't •V 1 i1'{T,J+'}ti '4�v'lS •:' t 1 * 13'i,. J k i, y • _ �”' _ '/ \. ,lik s1(g•' ,j Yl� ,�cj.'Tg�WN „ 1 ` 4�t AY' w,�l'r� ' Ax 1 r {t-itr { ' A /. J:y ^., , :ii'er•=•, � nJt'• S 441 4'4V1 r t S -t: 1 3Y? b^ . (� '�" i,,,a. . r „/ 1 )--. .r .�.,tt"+ .4„„r-4,c,,,'"-,3_,,,t, ` ,., [v y+7 Z Jk ,1.416).>/k,,60;,...'19.7"� r I r, [.a ` i bb t ....�•� '--r' . i r dw"p CY 7 .', t. 156: 5d-•ts h7-4.4-....-', 6 r 1 rr. 73.1417 ,JI •'',. i•:,•r i •.✓ 'y�.......ti... • -t3'c �, a ' y•y1 '4'1,',i :� fi{h i +s 1' ,, I k/!.s :.1 �..rr•>>� % ;' ,,,• --404-if-o°.'. i 4� s,r6-1'400411 j44.1 *,:•r +3. 4 t- �"z„''g4��b 4r 21 �4. ,,vc r i 9�'. r{-1,1 14,,,,:-/77 F t 3^ __t e r Wa M" a 'tTrp i rim t /�S/r Z ,J, -ef t+ry ., 4•s I J t4cr 1 t` O+\ t ,1 r• f�w,f.' • 142 f O ',-,,,q„:4:`:'0.4 r .. Z.nib§v4 './f drl$- 'tr'.r ?'K J . .r* x,, "'tl!'e \ t l •^ Q °'f.0 + ....� a S •.r •'!.-•. ,,yy: •yY .itr. `ft Via' ••a' `i.W �, ,F,, .".R . '`� ''a°r.e LW. - .,.• y.�,._ � jr \r .,ry ^"�• E �.611' x "', 3 7.4.-:,,,,..0,5,.„,,—t",.-:•-:, ihr�„!'[ ,x[i,,.;•'t nE - h n e • 1 Ott 'yi' ,, .. . /!'1 '.��,y.E,j '.rd �'' w•-•,- £,,t n €,J 'k'v. r..H t•;"'" qkK M B t h ' }� 1 4=,--,:-.4y a ,-' tl .I 3�R 1r ftj 7 .F. , f { 1 �; , 'l s ./t: 7i f SOH >�r�•Rb n .a ..'•«' re*,,,, 4,n.„:..,:1),...,,,...:- :t., 4[7r" I� "� . C o 1 rt l' v,3. �a.Yv` +. ,I', r.:o.:•yu�w r'a S+'" � 7 , x,vel l� � � �I.L 1• Ir' r`. '751'''4c= _'''''''''''''' ''-:,411%;;C= .' a d ,wr „,•-;,:e°, & [ " •at• n• ..E,x'a;. _}).,.`4. l '. r t.' 'r' k r-14 t'- r r Yl I �_� .4.,-,,,,,,,,ft„-,,...,,f,,,,..,,,•,-,1,,p..;',-.'4 j b u I}tp•i . t r > ���''t1 'i ' t� q i 'r Alin } �1� ci3tlV�j y a �r �rE{. f, ,q ;*41.120,-.0,1:4,11, f w' I s l s� 7 1•. / r- S r'!'1- t t, '. e n ck@ .•.t 1-,,Y, a 'g , " h 7 xM y'i. -r I 1 x_ A ': S�•(@ y� y, a r •e as wlY { �1, a f 4 � ,-. : • .4_4} g.. /'` L ,,- 4� �1� day 0 `l q t, t t c:'r,�fY'fv r� ai,+-.y.�"+� , IK ( �` <....Gr'C r _: dpi• ,�It f 1 crc+ 'a"•MYP ,r.�! K ,r., y,���- r ,f s>'''��r,y� im, 0;x'35• i ,n.F+,. :4"f .,1..?' �. �, } ¢.5+. rh�.} 4. voL x' ;` r; {p r '_ fF' i ;;}1',YP'ylf �•t" ' -` ,f�!, � S _Y•". t4 _v`t., a43/°'1{ .i;. r'(je! lir `-q f i�\ kJ ,:= ',V+ 1 •%:,.-. N,y ,. r4l' -.'s' ' I : 't..' .�'ra� r51 o ltay ri , .. }. ev... 4 r i�' `'ilii / t, }} f•'�%,--Ry i 1� , -v`•" >_anmu,m ;. yrs ✓ t D i O, .4.4. #'10,.5.4r• _r,;r t r } 9 r Id s f' f n,eJ •.'',:,77a): , 7 5....r n ,Y r t�}t-, ��' ,y'•Ao, xJ� {{ „,..4x5.--.i.1-,;,...-1-N-.-".• .r1 y s'-rs r , 'rr. t f t. +126:- .r J icvag ':'1'.,W'� *`}E f,T'i ,' S ,+ra a J 2+'�.:,. r .g it t• • , At 4d ,2"-r-2Ix ...„7.,,,..,,,,,,,, { ,,,......14,,,,...,,,,,...„..,. .,.,.,.,,.„ ..-it-,6v,,,,,',7,,,,, 4,,,•l,,,-' Jr.„.„.1',t° r r:,�(G �''7y--' _i t r•¢• ^, �'i:w' 414r( }a t$�- , r • 4.,''• ''}et t a 51 Y y 1 !, •! d G ,,y-- 2g"19• y nr x. ,{,`1'T•�•Y7 vk ••:r e,.P rf�.444* '...:Nlt lu• ,11I :.OF\11 •'4.141: 1....•-,{r,,'+,.'°'`.61./ ixf: + '-1.-f- , I-, l:`, � yj . -a. m3x ,�+j,yz-° ISIS,.ren KW,.� •v ...,ea •s+ .+n.i '`"' -.17...,.,'...,,-- 0 ..,e., 1 .4... '1 .�.v ,:�..��. .. erly •[\M.�.rt'+x ^,I a)' •SI lgatO Iffy ME.'J X10 `^,V^••}' 11•IY r• y the Geological y,r..y SCALA 7:ln apo AMD CLASSIFICATION • , Copyright(C)1997,Maptech,Inc. • r'; nr ""'s'` `•. t. _ .. t,'iC-,r"� IM1y� � }. 1�::;, `=,,,, 1 0 • x ay rs� . jt, a_' i J: .r,•{. : ' i - _L.. .. 1; ::: • • tx a3 pkx} ^ k `' t1 r{ t a��.„ < t f" hnl.I v }' r 1 \ . .i. .'....,g.,',0,- ,,:•' : P • - F ,fit • tl �, ,fir . . , t - �. ; /Tiri�,; >� .�_.. S( !' 4�YyY r f� }Iv Fd .•_ �, _...{pJ��-J�j .. :..�¢.�.1t :�I � .'.1..' ,I, j. •- 4. -.ate O vt , '„1 • i"6"44q 5 1 a r. `., r r l • 4 •••••••;.•31`);... ..1. ,) i l 4 } `1J 'T RI i�_ 1pIk:11•:.. �{ 1 Ks T pg';lq { r 1 rte, J 1f f \.. Yr � l g/ 1 ”I.r rl ' jS.• •L •• jt 't Yom\ \1 • .:r'-,.,.Z it / 5 rvt.4F•:% 't<' - t•,,.�% Y'I. 1 r.. .........1•--,--r7.7.-7../ .... _ ; _r/r tj t ti \'KI "'.L_I i' r'.Y/< '}i »iF'•';ar"`i3Fs; .. rM 17-"I :{. 3- I j A".,...'7,.......,,,......_...--.,: _ y:'' ., . •� � .r —I-_ >� lid y% "'{ � ray •� � _ � I !''>"'vsp' r ,.'_:.....: 1/47..7'-,;"• `.# . .J`•x rr-#. 11111• 4 •• 1 i �:'"-.0:.;'),•5;4::,.."•••:%.1 t sk I 34-N-7;7*' \ 1' %ir... `s ',..44....t,..*-ty,,.•i r .a; f r. {•e 2. • .i7' Fs t ti.:.V ! , I /./. , ,. -.1-.4f1,...44;,.1 a'4 ;'" j ..'•• ^,i..:4 �Y Ci/fr .t. it , I,,: u _ .J r'',....1(..—....4 ''•Js/ . I I: / • f./. r{ '/ei r L,!;w �� k ZX:';;;V:. ?"ytg'4.i'••;:.:,', ° h her.: .I a� ,'I Y-,. �-71'. Z � 1 --- ¢ t,.....( f'�� o,•kl i . 1� I .{.I 'rT�L•r!• -1• , .r__•Vyrt; .r j I Ke as�¢t4G„(. I ' 1 e - ��� ,� :..., "..,:-..,,,-.,...4_4:-.4:44....;/4„.7! `�' .y.'4r�.c �i �' iyf _.2,,•„.,...........1,,. ..„....„,..::..,,,,,,,,. .:,.......,.._.,........:,.. .. ^�r �] � •,w )� kr=�-'if�� I .,,....4.-1%--:';:ii .I r � 7/ 4•�� •• 1,,, ��k rtx r �j/tM. I I 1 I .::-. : . *PI'. .I .fi t. fir,,; f ;,s : ;.xe' it ;. (ys'� r r� .< , ' ✓6, // I r •• J r l , t. . • /t... r r t ...,.....R...,..,..,...-.; ?:. : .., I L ili \ _ Sim. -}-I , I Z ... 7-g. .�.q.^' / sf "� ! L'1 ...J ...�. t -�a o � }r.r � Jf Y aS jjti y ..1�. -.�,1L /t lkr1� 47( 1 5 I ` if 0 �EK.J 4 f ..z.'..;;: •i'''' I 1:.,r •,cawq i�' f+ , I .- '' ,..,...q•,'..:-,,3 � ' ���/rs"* n t0 .11,4::.,,,,.: .6Y ♦ I • '�18,4... - - r,/1' (. firv(11E. ri'{'. s'4 j,'"• a ' ���•` 1�...:.-...%.,......-•-11.;:..T.,.'''....;.....,..',:.."'-°'.1":..;.. 1 �� /`:�" ••« i Aamvu, .,i«{'+ i �rY �; r���'�r --\''f•J �� skr• �rt �" / i( :" • �'ew'.o.,y� �_ K .. ...;::',...f.5. .e`..#r`' I�,;.?4,, r /I _ V . •� t,-.1 .1,,, •�„j- •• uwom _ ._.. . . . 1 'w. v `. a. .. :%:....-e.;;-.fI,%�a-JI. x,17 r: 4. 1. 1 - �; .. ; i�,euwu 1 ;r FF •, j i i.! ^��.. J{t�lr V .1;.. r } rr iX ` . 1 S ' V-r.�•, e5:7:;...7..".;' f•^r I ' y '• �J\•irtc,;l, I. iE��re. r t .,.....;1414,',..w,..TTT«CrttCC.. .�' �•{ .I .y I f} C • -4> vlir 7 I r'.a.M .0I: ,�li- 0� �:,1,! l h1i �,. rl f, r"1-' lI, i 7t��r / it',/fir..' .� .r �'ti'I a vN , r.? 1 vr,t, ,r 4R NFR 1: `I J 7 tl, , , rof �, - �I �`I- ►.t �1,-�r�' �...1 I _.�.,. � [,. _.'�ff�,'I�'�.. r I " �•.w.• i�l'T" �a 1 • \ :xia!{_rl` r :.S t F .1f,.. �w N r J .. •:..',..:.,:..,•1:-.••••:1::tI ML4Yy� `�. 1 tr (-�^ F�tro»� y+/y. -r t t `� t`,t `° I 'al'�41 -1 .�.43 i : 5.acI..1 y 1 t t �r EXPLANATION Jt 1 B t IJcrx 4 _ ,� -I , I/ t• �-�.,; y 1 1 ..r.t. ® MONITOR WELL �1 7. I. -• �_. ..;.....1.7...,-':.,:r.:� . �-, 4, I :_ `3 v �ty ��. :.i.!'..:.;:'•,':;.••—•l �x t,� • PRIVATE WELL t` { }(" �'- v• L ��fi t {I�tt.. �. r ..r..* I�:w1 Im*on-RecYletl-23 Water 1 ,/]_ ,� •I 1 ,�-.r� {, .7. / t I L .]Itngaaon-Blended Recycled water "`yf:'.1.1.... ..I r • J• R.• I TT �`t I r t • .� r` LI., x�N,+ w'�r t�; a ti( •• 1 l°r fI '.1.',;' .::;:•,'.....11):'•)41,;;;:44.:..;:":z•t+. ,..�•t' 't it •..+,.�,t:;.IJs+ .- _ "°° '"°' A""' SOE UUTILITY " RECYCLEDUTH WTAHOATERPMONITORINGBLICDISTRICTM PROGRA *%).;- WELL LOCATIONS w 1 CARSON VALLEY GROUNDWATER BASIN (6-6) ! ALPINE COUNTY, CA C v.".aass Rw•.counNo�.nlwms_,...am.e ALPINE COUNTY SOILS Site S2a SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY SOIL QUALITY DATA Ranch: Celio Type: KT 2015 Inches: 06-12 EC TKN NO3 P P2O5 K K2O 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 03/04/15 7.88 6.500 70.0 3,430 2.2 488 1,120 2,500 3,000 12 0.13 185 34.0 286 696 231 7.42 8.66 1,990 4.5 06/05/15 7.87 8.130 75.2 5,740 15.7 750 1,720 2,021 2,400 11 0.16 220 38.3 202 1058 294 11.11 12.90 2,200 7.3 09/03/15 7.78 10.600 61.2 5,290 4.4 620 1,420 2,966 3,600 20 0.08 325 32.6 195 1488 600 11.90 13.75 2,825 17.5 12/04/15 7.90 8.410 68.3 5,570 6.9 554 1,270 2,573 3,100 16 0.04 325 30.3 240 2132 532 17.56 19.41 2,300 4.7 Maximum 7.90 10.600 75.2 5,740 15.7 750 1,720 2,966 3,600 20 0.16 325 38.3 286 2132 600 17.56 19.41 2,825 17.5 Minimum 7.78 6.500 61.2 3,430 2.2 488 1,120 2,021 2,400 11 0.04 185 30.3 195 696 231 7.42 8.66 1,990 4.5 Average 7.86 8.410 68.7 5,008 7.3 603 1,383 2,515 3,025 15 0.10 264 33.8 231 1344 414 12.00 13.68 2,329 8.5 #Tests 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 Site 2a SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY SOIL QUALITY DATA Ranch: Celio Type: KT From: 1981 Inches: 06-12 To: 2015 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/1009 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 36 164 356 100 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 69 315 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 2,500 25.0 925 2,120 12,425 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 Maximum 8.27 8.41 73.7 5,008 25.0 948 2,170 17,357 20,828 29 2.0 263.75 36 367 1344 414 12.00 13.7 2,329 17.7 Minimum 6.95 0.93 53.3 1,745 0.7 324 742 2,003 2,400 7 0.1 13 25 51 120 26 2.52 2.4 177 4.3 Average 7.93 3.03 63.3 2,695 3.6 788 1,804 10,634 12,756 16 0.5 81 32 145 365 104 5.55 6.3 719 8.0 #Tests 35 35 35 35 35 35 35 31 31 35 35 33 35 33 33 32 32 32 30 31 Site: S2a Ranch: Celio pH Salinity 11 - 10 10 s y, 9 t - 7Y` .r..�. 6 o _ 7 x� t 5 a C4 6 3Alk 1.- . 5 wry lirlrr r 2 1 =— iii2m mmm °gmmmsIgm 2ssssmsssry"�R,8 , _ � T _ ,°2 :7 2 ° _ T72 .°2 :'-'° Tnn222r2,2g$222222 m2m o� —' pH —Linear(pH) —.—Salinity —Linear(Salinity) Cation Exchange Capacity Sodium Adsorption Ratio 50 L 20 , 40 15 —.. . re 10 c w E 20 a/MAAi 5 — — �AlliiM - � —*—CEC Linear(CEC) —*—SAR —Linear(SAR) Site S3a SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY SOIL QUALITY DATA Ranch: Hall Type: SMB 2015 Inches: 06-12 EC TKN NO3 P P2O5 K K2O 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/1009 mg/L mg/L mg/L SAR Na% mg/L mg/L 03/04/15 5.20 0.243 32.8 972 0.7 512 1,170 2,413 2,900 9 0.07 14.0 14.7 12.5 22.0 2.91 1.46 < 1.00 38 37.2 06/05/15 5.67 0.334 36.3 2,040 0.3 873 2,000 1,581 1,900 15 0.07 23.0 23.0 19.7 23.3 7.37 1.14 < 1.00 <1 63.1 09/03/15 5.73 0.504 33.6 1,720 0.3 442 1,010 1,625 2,000 20 0.05 20.0 18.5 23.4 49.8 25.70 1.69 1.18 40 7.0 12/04/15 6.98 0.676 35.2 2,030 1.7 420 960 1,174 1,400 18 0.07 18.0 15.2 27.4 49.8 25.70 1.64 1.11 50 3.3 Maximum 6.98 0.676 36.3 2,040 1.7 873 2,000 2,413 2,900 20 0.07 23.0 23.0 27.4 49.8 25.70 1.69 < 1.18 50 63.1 Minimum 5.20 0.243 32.8 972 0.3 420 960 1,174 1,400 9 0.05 14.0 14.7 12.5 22.0 2.91 1.14 < 1.00 0 3.3 Average 5.90 0.439 34.5 1,691 0.7 562 1,285 1,698 2,050 15 0.07 18.8 17.9 20.8 36.2 15.42 1.48 < 1.07 32 27.6 #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: 2015 EC TKN NO3 P P2O5 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 16,500 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 0.26 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 Maximum 6.46 3.47 44.4 1,928 4.5 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 0.4 420 962 1,040 1,267 8 0.1 4 15 14 14 3 0.65 0.5 15 5.6 Average 5.88 0.81 36.2 1,425 1.4 801 1,835 12,142 14,567 21 0.6 26 19 55 66 20 1.80 1.7 126 13.9 #Tests 35 35 35 35 35 35 35 31 31 35 35 33 35 33 32 32 32 32 29 31 Site: S3a Ranch : Hall pH Salinity 11 10 10 9 8 9 7 - 8 - 6 - o a 7 _ E 5 3 5 2 4 - 1 3 mmmmmmmmm � Aa �m�m � � ess "s"ssssss� rNNNN 0 mmm � � mm � mmss "sss � NNNN -�pH Linear(pH) t Salinity Linear(Salinity) Cation Exchange Capacity Sodium Adsorption Ratio 50 20 40 - 15 co 30 - = a 10 E 20 \ f�- ✓_�w 5 10 0 m m m m m m mm $ mam N SoN 880N 88SN 'N NN mN YN mN 0 m mmm m m m m m m m m m wm miAmm m iA m m mm m 8 888 N N oN NNN -4--CEC -Linear(CEC) -4-SAR Linear(SAR) Site S4a SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY SOIL QUALITY DATA Ranch: Gansberg Type: DI 2015 Inches: 06-12 EC TKN NO3 P P2O5 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/10Og mg/L mg/L mg/L SAR Na% mg/L mg/L 03/04/15 6.67 1.050 44.0 2,730 6.7 367 840 6,661 8,000 23 0.15 24.0 24.3 60.7 130.0 14.4 3.89 4.20 151 11.1 06/05/15 5.67 1.680 42.8 3,020 26.4 503 1,150 6,273 7,500 22 0.12 28.0 20.8 54.8 77.1 27.0 2.13 1.79 125 23.6 09/03/15 6.08 0.511 38.4 3,050 2.3 244 560 3,162 3,800 23 0.05 17.1 18.2 22.1 55.8 14.0 2.28 2.01 20 17.1 12/04/15 6.13 0.526 38.1 2,370 4.0 293 670 4,969 6,000 31 0.10 21.0 17.3 30.8 55.8 14.0 2.09 1.74 40 2.8 Maximum 6.67 1.680 44.0 3,050 26.4 503 1,150 6,661 8,000 31 0.15 28.0 24.3 60.7 130.0 27.0 3.89 4.20 151 23.6 Minimum 5.67 0.511 38.1 2,370 2.3 244 560 3,162 3,800 22 0.05 17.1 17.3 22.1 55.8 14.0 2.09 1.74 20 2.8 Average 6.14 0.942 40.8 2,793 9.8 352 805 5,266 6,325 25 0.11 22.5 20.2 42.1 79.7 17.4 2.60 2.44 84 13.7 #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: 2015 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/1009 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 1,008 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 23,075 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 Maximum 6.94 3.26 47.0 2,793 9.8 643 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 5,049 6,050 14 0.1 3 13 24 23 6 1.02 0.4 28 5.8 Average 6.44 0.86 38.5 1,735 4.1 444 1,016 17,267 20,719 29 0.6 15 18 57 76 13 2.45 2.3 133 11.0 #Tests 35 35 35 35 35 35 35 31 31 35 35 33 35 33 33 32 32 31 29 30 Site: S4a Ranch : Gansberg pH Salinity 11 10 10 9 8 9 - 7 - 8 6 1 _ w x 7 L 5 6 v 3 5 2 4 roro W WWO 1 3 W W W W W W W W Opi OI fA Si T T WW OWI WW W S S 8 g $g g 8 g N ry N N N ry 0 m . . . . . . . . . . .. . . . ..O WW WW $ W OI 8 § g g S § o g S N N N N N N —�pH Linear(pH) — Salinity Linear(Salinity) Cation Exchange Capacity Sodium Adsorption Ratio 50 20 40 - 15 30 - o a 10 ct� 20 5 10 0 W w m w m m m W W W W W m m m W W W m 8 8 8 8 8 8 0 o g o N o o Y o 0 N N N N N N ry N N N N N N N N N N N N —4—GEC Linear(CEC) —CSAR Linear(SAR) Site S5a SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY SOIL QUALITY DATA Ranch: Gansberg Type: HRB 2015 Inches: 06-12 EC TKN NO3 P P2O5 K K2O 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 03/04/15 5.58 1.210 36.2 1,610 13.6 580 1,330 2,695 3,200 18 0.10 17.0 17.9 93.0 103.0 19.40 2.54 2.36 202 5.9 06/05/15 5.60 0.248 35.4 1,640 5.1 664 1,520 3,419 4,100 23 0.07 15.0 17.3 14.0 35.5 3.54 2.19 1.88 <1 5.7 09/03/15 5.78 0.281 35.5 1,790 2.4 239 550 3,568 4,300 22 0.24 13.0 15.9 15.6 48.8 5.14 2.74 2.64 20 6.0 12/04/15 5.82 0.518 34.0 1,840 4.4 311 710 3,240 3,900 20 0.11 17.0 11.9 34.2 48.8 5.14 2.06 1.69 50 3.4 Maximum 5.82 1.210 36.2 1,840 13.6 664 1,520 3,568 4,300 23 0.24 17.0 17.9 93.0 103.0 19.40 2.74 2.64 202 6.0 Minimum 5.58 0.248 34.0 1,610 2.4 239 550 2,695 3,200 18 0.07 13.0 11.9 14.0 35.5 3.54 2.06 1.69 0 3.4 Average 5.70 0.564 35.3 1,720 6.4 449 1,028 3,231 3,875 20 0.1 15.5 15.8 39.2 59.0 8.31 2.38 2.14 68 5.2 #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: 2015 EC TKN NO3 P P2O5 K K2O 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 5.80 1.08 31.2 997 1.4 233 534 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 1988 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 2.31 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 0.33 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 Maximum 6.34 1.08 36.3 1,720 9.7 930 2,130 24,727 29,672 37 10.9 32 17 47 93 8 4.34 4.9 92 16.3 Minimum 5.70 0.18 28.0 917 0.5 233 534 2,615 3,175 8 0.1 1 10 12 20 2 1.10 0.5 9 4.5 Average 6.11 0.41 31.4 1,150 4.0 573 1,312 15,750 18,901 21 1.1 9 13 24 45 4 2.31 2.1 33 8.1 #Tests 35 35 35 35 35 35 35 31 31 35 35 33 35 33 33 32 32 32 30 31 Site: S5a Ranch : Gansberg pH Salinity 11 10 - 10 9 9 8 7 - $ 6 a a 7 t 5 6 ! E 4 5 3 2 4 1 3 r's "s"s C4 C4 C,1 CM s s � rNNNN o EiEigiiiiiEis:C I sss �� �rNN �pH Linear(pH) -.—Salinity Linear(Salinity) Cation Exchange Capacity Sodium Adsorption Ratio 50 20 40 15 a' 30 — - o o Q 10 - N - E 20 - 10 5 0 q Cp C_ pfOOOO 0 W Oi a a a a a a m O a a a a a N a S O O O S N S O O' p O O a a a a a O�a a a a m a a a a a a a OO OO OO po OO GG OOO OO m O ^ ' 'O N N O N N N N N N N N N N N N N N N N —*—CEC Linear(CEC) --0—SAR Linear(SAR) Site S6a SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY SOIL QUALITY DATA Ranch: Neddenriep Type: DWB 2015 Inches: 06-12 EC TKN NO3 P P2O5 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 menooy mg/L mg/L mg/L SAR Na% mg/L mg/L 03/04/15 6.27 0.506 38.5 996 7.9 283 650 3,666 4,400 25 0.12 16.0 18.1 17.6 78.4 3.61 4.45 4.93 45 5.4 06/05/15 6.49 0.607 42.2 1,850 15.1 601 1,380 3,075 3,700 26 0.03 23.0 19.9 15.7 108.0 2.83 6.59 7.64 15 19.9 09/03/15 5.77 0.828 43.6 3,280 13.5 422 970 5,509 6,600 38 0.09 24.0 18.2 46.9 101.0 26.00 2.93 2.91 80 20.3 12/04/15 6.18 0.601 40.6 2,140 8.3 374 860 4,664 5,600 31 0.05 20.0 12.9 20.6 101.0 26.00 3.49 3.66 30 5.4 Maximum 6.49 0.828 43.6 3,280 15.1 601 1,380 5,509 6,600 38 0.12 24.0 19.9 46.9 108.0 26.00 6.59 7.64 80 20.3 Minimum 5.77 0.506 38.5 996 7.9 283 650 3,075 3,700 25 0.03 16.0 12.9 15.7 78.4 2.83 2.93 2.91 15 5.4 Average 6.18 0.636 41.2 2,067 11.2 420 965 4,229 5,075 30 0.07 20.8 17.3 25.2 97.1 14.61 4.37 4.79 42 12.8 #Tests 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 Site S6a SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY SOIL QUALITY DATA Ranch: Neddenriep Type: DWB From: 1981 Inches: 06-12 To: 2015 EC TKN NO3 P P2O5 K K2O 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 4.6 112 37.7 1988 6.18 1.22 41.3 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 1,567 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 3.9 55 25.4 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 41.2 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 Maximum 6.58 1.55 56.3 2,145 13.3 908 2,080 21,633 25,960 44 2.3 44.5 20 48 173 15 6.16 7.2 348 56.4 Minimum 4.96 0.26 29.3 1,157 0.5 420 965 3,092 3,725 14 0.1 4 11 10 27 2 1.69 1.4 24 12.8 Average 6.17 0.60 42.0 1,634 4.4 686 1,572 14,710 17,650 29 0.5 16 16 23 79 5 4.15 4.6 91 30.3 #Tests 35 35 35 35 35 35 35 31 31 35 35 33 35 33 33 32 32 32 30 31 Site: S6a Ranch : Neddenriep pH Salinity 11 - 10 10 9 - 9 8 _ 7 8 6 - w 7 E 5 6 't4 5 _ 3 2 4 1 - 3 0 RE I. . . .. . . .. . .. . . . . . .... NNNOINNN NNNNNNNNN NNNNNNNNNNNNNNNN —.—pH Linear(pH) — Salinity Linear(Salinity) Cation Exchange Capacity Sodium Adsorption Ratio 50 20 40 15 c' 30 - - o o _ Q 10 E 20 - N 10 V 0 C O 0 - O OC W W W W W W W W W W W W W W W S S N N oN N N N N N N W W W W W W W W W W W W W W W W W W OWi 8 ry 8 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 2015 Inches: 06-12 EC TKN NO3 P P2O5 K K2O 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/K2 mg/Kg_ mg/Kg mg.Kg me/100g mg/L mg/L mg/L SAR Na% mg/L mg/L 03/04/15 5.68 0.335 41.8 1,990 7.3 619 1,420 5,315 6,400 24 0.15 23.0 18.4 33.3 5.90 7.22 0.24 < 1.00 <5.5 10.9 06/05/15 5.55 0.281 43.6 3,180 7.8 744 1,700 5,118 6,100 29 0.28 16.0 20.0 29.7 7.37 8.79 0.31 < 1.00 <1 11.7 09/03/15 5.48 0.860 43.2 3,390 28.6 427 980 2,600 3,100 33 0.06 24.0 16.5 69.7 18.00 40.90 0.42 < 1.00 5.0 14.3 12/04/15 5.50 0.343 38.2 2,470 9.4 434 990 4,188 5,000 29 0.16 17.0 11.4 34.2 18.00 40.90 0.49 < 1.00 10.0 4.6 Maximum 5.68 0.860 43.6 3,390 28.6 744 1,700 5,315 6,400 33 0.28 24.0 20.0 69.7 18.00 40.90 0.49 < 1.00 10.0 14.3 Minimum 5.48 0.281 38.2 1,990 7.3 427 980 2,600 3,100 24 0.06 16.0 11.4 29.7 5.90 7.22 0.24 < 1.00 0.0 4.6 Average 5.55 0.455 41.7 2,758 13.3 556 1,273 4,305 5,150 29 0.16 20.0 16.6 41.7 12.32 24.45 0.37 < 1.00 3.8 10.4 #Tests 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 Site S7a SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY SOIL QUALITY DATA Ranch: Bruns Type: JaC From: 1981 Inches: 06-12 To: 2015 EC TKN NO3 P P2O5 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 5.58 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 0.19 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 17 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 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 12.9 Minimum 5.55 0.13 35.4 1,384 0.3 301 689 4,305 5,150 14 0.1 1 11 12 6 3 0.32 0.1 3.3 3.5 Average 6.03 0.23 40.3 1,847 4.4 672 1,539 16,157 19,387 39 0.7 11 15 22 10 5 0.53 1.0 10.0 7.6 #Tests 35 35 35 35 35 35 35 31 31 35 35 33 35 33 33 32 32 32 30 31 Site: S7a Ranch : Bruns pH Salinity 11 10 10 9 - __ 8 9 = 7 8 _ 6 - _ = o _ 7 t 5 E 4 3 5 2 4 1 44DD m 444DDD 3 W W W W W W W W EW OWi W W W m$ OWi W T 8 0 < S 0 8 • N N N N N N N O W W W W 0 is W W W W W 0 T W iA$ m O O E 8 8 88 S 18 8 8 N ry N ry N N --�-pH Linear(pH) -0-Salinity Linear(Salinity) Cation Exchange Capacity Sodium Adsorption Ratio 50 20 40 15 • 30 - o 10 E 20 _:,_efr'•-•-..-ce"--•-•-/-\ • \p/****'."--4\t-E-4-.'""N/P-4 10 0 N mN WN 0N N N N O W < W W W W W W W W W W W W W W W W W W pp 8O ry O Y CC m0 W O.- M O m N W o o O N N N N S N N N N N N N N -Linear(CEC) -'--SAR Linear(SAR) ALPINE COUNTY MONITORING WELLS Site: ACMW-01AW SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2015 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 01/08/2015 5.23 5487.9 12.2 6.58 32.5 0.023 0.061 < 0.020 < 0.010 0.049 0.110 04/01/2015 5.60 5487.5 9.4 6.75 30.4 0.019 < 0.050 < 0.020 < 0.010 0.138 0.155 07/15/2015 12.01 5481.1 11.4 6.69 38.6 0.024 < 0.050 < 0.020 < 0.010 0.175 0.190 10/01/2015 21.88 5471.3 Maximum 21.88 5487.9 12.2 6.75 38.6 0.024 0.061 < 0.020 < 0.010 0.175 0.190 Minimum 5.23 5471.3 9.4 6.58 30.4 0.019 < 0.050 < 0.020 < 0.010 0.049 0.110 Average 11.18 5482.0 11.0 6.67 33.8 0.022 0.054 < 0.020 < 0.010 0.121 0.152 #Tests 4 4 3 3 3 0 0 3 3 3 3 3 3 Site: ACMW-01AW SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2015 Total Fecal TDS EC Chloride COD SO4 Color Cob E.coli Strep Date mg/L umhos mg/L mg/L mg/L Units MPN MPN MPN Comments 01/08/2015 77 70.8 1.37 4.72 5.2 < 1 04/01/2015 75 69.7 1.65 5.06 1 < 1 07/15/2015 58 96.1 1.22 4.40 < 1 < 1 10/01/2015 Not enough water to sample Maximum 77 96.1 1.65 5.06 5.2 < 1 Minimum 58 69.7 1.22 4.4 < 1 < 1 Average 70 78.9 1.41 4.73 2.4 < 1.0 #Tests 3 3 3 0 3 0 3 3 0 Site: ACMW-01AW SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA From: 1989 To: 2015 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 5482.6 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 1.989 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 5482.0 11.0 6.67 33.8 0.022 0.054 0.020 < 0.010 0.121 0.152 Maximum 11.2 5486.9 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 6.8 5482.7 10.8 6.69 44.4 46 13.49 0.050 0.112 0.026 < 0.012 0.543 0.673 #Tests 27 27 27 27 27 22 23 27 27 18 27 27 27 Site: ACMW-01AW SOUTH TAHOE PUBLIC UTILITY DISTRICT PINE COUNTY GROUNDWATER QUALITY DA From 1989 To: 2015 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 Maximum 109 162 7.6 8 6.95 60 12.3 2.0 < 2 Minimum 70 70 1.1 2 1.84 < 5 1.1 1.0 < 2 Average 85 106 3.2 5 3.54 11 2.4 1.3 < 2 #Tests 27 27 27 23 27 17 27 27 1 Site AC MW-01 AW Nitrate-Nitrogen and Water Level Chlorides&GW Depth 5 5495 50 4 5490 40 3 5485 di m 30 -6-3J E 2 5480 a E - : 20 1 5475 10 - 0 - 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 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 —0—Nitrate —a—Water Level —0—Chloride Total Dissolved Solids (TDS) Total Phosphorus 500 0.50 400 0.40 300 0.30 J E - E 200 0.20 100 �-• •�'�—',• • 0.10 - 1101111111. 11111UPPr" 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 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 �--TDS Linear(TDS) +Total P Linear(Total P) Annual Metals Report ACMW-01 AW Main Dam Ca Mg K Na Al 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 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 Site: ACMW-01 BE SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2015 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 01/08/2015 9.14 5494.4 8.0 6.34 54.7 0.033 < 0.050 < 0.020 < 0.010 0.141 0.165 04/01/2015 10.96 5492.6 6.5 6.44 64.7 0.016 < 0.050 < 0.020 < 0.010 0.165 0.182 07/15/2015 21.50 5482.1 17.1 7.66 63.9 0.028 < 0.050 < 0.020 < 0.010 0.124 0.131 10/01/2015 Maximum 21.50 5494.4 17.1 7.66 64.7 0.033 < 0.050 0.020 < 0.010 0.165 0.182 Minimum 9.14 5482.1 6.5 6.34 54.7 0.016 < 0.050 < 0.020 < 0.010 0.124 0.131 Average 13.87 5489.7 10.5 6.81 61.1 0.026 < 0.050 0.020 < 0.010 0.143 0.159 #Tests 3 3 3 3 3 0 0 3 3 3 3 3 3 Site: ACMW-01BE SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2015 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 01/08/2015 91 115 1.38 2.94 < 1 < 1 04/01/2015 102 132 1.50 2.92 < 1 < 1 07/15/2015 102 137 1.40 3.24 < 1 < 1 10/01/2015 Dry Maximum 102 137 1.50 3.24 < 1 < 1 Minimum 91 115 1.38 2.92 < 1 < 1 Average 98 128 1.43 3.03 < 1.0 < 1.0 #Tests 3 3 3 0 3 0 3 3 0 Site: ACMW-01BE SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA From: 1989 To: 2015 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 Maximum 18.2 5495.3 11.3 7.23 72.0 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 10.7 5490.8 9.9 6.59 51.5 45 7.20 0.037 0.095 0.025 0.011 0.327 0.411 #Tests 27 27 27 27 27 22 23 27 27 18 27 27 27 Site: ACMW-01BE SOUTH TAHOE PUBLIC UTILITY DISTRICT PINE COUNTY GROUNDWATER QUALITY DA From 1989 To: 2015 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 Maximum 103 168 3.1 13 6.01 20 3.0 2.0 < 2 Minimum 66 74 0.9 2 1.13 < 4 < 1.0 < 2 Average 85 110 1.6 6 2.46 7 1.4 1.3 < 2 #Tests 27 27 27 23 27 17 27 27 1 Site ACMW-01 BE Nitrate-Nitrogenand Water Level Chlorides 5 5510 50 4 I -- 5500 40 3ily-11-4V-'6.-Nea`vi-i\-......"1\A''."* 5490 2 30 153 co J 2 5480 V 20 1 i 5470 10 0 1 5460 0 . , , . . , . . . , , , . . . , , . . , . , . , . . 00 4s 0i5 43 01 CP Os CP Oh 01 Of' N" N'5 .h 9 0 h ;\ 9 ♦ On h 1 A ♦ 0 5 0 A 0 A 0 A O O O O O '�• '� '� t Nitrate —4) –Water Level —.—Chloride Linear(Chloride) Total Dissolved Solids (TDS) Total Phosphorus 500 -. 0.20 400 i - 0.15 300 - E 0.10 200 - 0.05 ` . 100 -y,_���.-+ ..-•--,...-.--• AiikNOW— Vr' I - 0 - 0.00 . . . . , , . . . , , . . . . . . . . . . . . . . 9a a° .'5 CP C;\ Cfb O` 00 00 OS\ OA ss (5 ^5 0e a° '7;3 43 a� 9a O` O'S o' OS\ OA4 s (5 sh —.—TDS Linear(TDS) —•—Total P —Linear(Total P) Annual Metals Report ACMW-01 BE Secondary Dam Ca Mg K Na Al As Ba Be Ag Cd Cr Cu ACMW-01BE 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 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 Site: ACMW-02N SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2015 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 01/08/2015 10.12 5459.6 14.1 6.46 58.5 0.018 < 0.050 < 0.020 < 0.010 0.320 0.357 04/01/2015 9.44 5460.3 12.8 6.42 52.2 0.015 < 0.050 < 0.020 < 0.010 0.692 0.707 07/15/2015 11.91 5457.8 14.6 6.62 64.1 0.027 < 0.050 < 0.020 < 0.010 0.300 0.280 10/01/2015 13.72 5456.0 12.2 6.81 63.7 0.022 < 0.050 < 0.020 < 0.010 0.252 0.239 Maximum 13.72 5460.3 14.6 6.81 64.1 0.027 < 0.050 < 0.020 < 0.010 0.692 0.707 Minimum 9.44 5456.0 12.2 6.42 52.2 0.015 < 0.050 < 0.020 < 0.010 0.252 0.239 Average 11.30 5458.4 13.4 6.58 59.6 0.021 < 0.050 < 0.020 < 0.010 0.391 0.396 #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 2015 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 01/08/2015 94 127 2.42 2.73 < 1 < 1 04/01/2015 87 114 2.13 2.88 < 1 < 1 07/15/2015 95 152 2.76 2.84 < 1 < 1 10/01/2015 102 156 2.68 2.77 < 1 < 1 Maximum 102 156 2.76 2.88 < 1 < 1 Minimum 87 114 2.13 2.73 < 1 < 1 Average 95 137 2.50 2.81 < 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: 2015 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 0.025 < 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 Maximum 11.3 5462.3 13.4 8.99 106.0 60 17.98 0.042 0.240 0.041 0.018 0.391 0.396 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 5458.8 12.1 6.89 63.5 47 2.07 0.021 0.093 0.025 0.011 0.126 0.215 #Tests 27 27 27 27 27 22 23 27 27 18 27 27 27 Site: ACMW-02N SOUTH TAHOE PUBLIC UTILITY DISTRICT PINE COUNTY GROUNDWATER QUALITY DA From 1989 To: 2015 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 Maximum 130 231 6.8 9 9.73 10 3.6 2.4 2.0 Minimum 79 114 2.1 2 2.18 < 4 1.0 1.0 < 2.0 Average 93 138 3.2 5 3.52 5 1.5 1.4 2.0 #Tests 27 27 27 23 27 17 27 27 2 Site ACMW-02N Nitrate-Nitrogen and Water Level Chlorides 5 5470 50 4 5465 40 3 5460 m 30 -a GI J 2 5455 RI20 1 5450 10 0 5445 0 00 ui'` 00 9h y1 obA O� 00 Oh 01 00 �.� �� �.h 0 '� ^' '\ 9 O h 'N o, N •^� h 0 A A 0 9 9 O O O O O ♦ '. '. Nitrate t Water Level Linear(Nitrate) —0—Chloride Linear(Chloride) Total Dissolved Solids (TDS) Total Phosphorus 500 0.20 400 0.15 300 - E 0.10 200 0.05 100 0 - 0.00 i9 A° CP 43 C;\ Ao o` Or o o oo ° , ,5 RP CON CO. " CO‘ e9 0 o 4 o 0 s < �5 TDS —Linear(TDS) —0—Total P —Linear(Total P) Annual Metals Report ACMW-02N Access Gate Ca Mg K Na Al As Ba Be Ag Cd Cr Cu 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 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 <2.5 <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 Site: ACMW-02S SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2015 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 01/08/2015 11.40 5460.2 15.0 6.07 37.7 0.010 0.280 < 0.020 < 0.010 5.46 5.740 04/01/2015 8.74 5462.9 12.6 6.20 49.4 0.010 < 0.050 < 0.020 < 0.020 1.60 1.360 07/15/2015 13.86 5457.7 14.3 6.11 40.8 0.019 < 0.050 < 0.020 < 0.030 2.78 2.810 10/01/2015 15.77 5455.8 13.4 6.20 40.2 0.035 < 0.050 < 0.020 2.31 2.460 Maximum 15.77 5462.9 15.0 6.20 49.4 0.035 0.280 < 0.020 < 0.030 5.46 5.740 Minimum 8.74 5455.8 12.6 6.07 37.7 0.010 < 0.050 < 0.020 < 0.010 1.60 1.360 Average 12.44 5459.2 13.8 6.15 42.0 0.019 0.108 < 0.020 < 0.020 3.04 3.093 #Tests 4 4 4 4 4 0 0 4 4 4 3 4 4 Site: ACMW-02S SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2015 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 01/08/2015 99 133 1.74 4.06 1 < 1 04/01/2015 87 114 1.84 5.06 9.7 < 1 07/15/2015 85 129 1.84 4.40 < 1 < 1 10/01/2015 84 127 1.51 4.73 < 1 < 1 Maximum 99 133 1.84 5.06 9.7 < 1 Minimum 84 114 1.51 4.06 < 1 < 1 Average 89 126 1.73 4.56 3.2 < 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: 2015 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 0.029 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 0.220 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 Maximum 12.4 5461.2 13.8 7.07 58.0 42 5.11 0.036 0.309 0.054 0.020 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 7.9 5460.0 12.2 6.52 48.6 38 1.35 0.021 0.108 0.026 0.011 0.313 0.402 #Tests 27 27 27 27 27 22 23 27 27 18 27 27 27 Site: ACMW-02S SOUTH TAHOE PUBLIC UTILITY DISTRICT PINE COUNTY GROUNDWATER QUALITY DA From 1989 To: 2015 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 Maximum 91 133 2.7 7 5.34 8 9.1 2.0 < 2 Minimum 69 96 1.4 2 1.38 < 5 < 1.1 1.0 < 2 Average 78 108 1.9 5 2.85 5 3.1 1.3 < 2 #Tests 27 27 27 23 27 17 27 27 1 Site AC MW-02S Nitrate-Nitrogen and Water Level Chlorides 5 5470 50 - 4 — 5465 40 3 - : = 30 — 5460 r J - E _I E : — 5455 a 20 - 1 3 - 10 p r----- ���i— — 5450 45 4' 0� °t) 41 0°' Os on) o, 01 0f' N's .:s ,:o — —— -- —— 0 -1 5445 mo a` 45 95 a� Ao o° o0 0' O1 0° s` so 1y —40—Nitrate —.—Water Level Linear(Nitrate) —•—Chloride Linear(Chloride) Total Dissolved Solids (TDS) Total Phosphorus 500 0.20 I - 400 _ - 0.15 300 J 'a) CA E 0.10 E 200 0.05 ,.—✓'� 100 - ---- —- �' '�+—� ' Y • 0.00 0 a h a 5 a o ° 45 4' 9O 9h 01 09 O,` OO CP O\ 0e' ..\ N',y 1, 0 a 0 a a a o 0 0 0 0 �. —4--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 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 Site: ACMW-04W SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2015 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 01/08/2015 21.55 4898.3 12.2 6.04 41.1 0.017 < 0.050 < 0.020 < 0.020 1.58 1.59 04/01/2015 21.91 4898.0 12.7 6.04 44.4 0.013 < 0.050 < 0.020 < 0.020 1.95 1.98 07/15/2015 9.88 4910.0 12.6 6.05 36.5 0.027 < 0.050 < 0.020 < 0.020 1.99 2.00 10/01/2015 15.61 4904.3 12.4 6.06 36.2 0.012 0.060 < 0.020 < 0.020 1.69 1.75 Maximum 21.91 4910.0 12.7 6.06 44.4 0.027 0.060 < 0.020 < 0.020 1.99 2.00 Minimum 9.88 4898.0 12.2 6.04 36.2 0.012 < 0.050 < 0.020 < 0.020 1.58 1.59 Average 17.24 4902.7 12.5 6.05 39.6 0.017 0.053 < 0.020 < 0.020 1.80 1.83 #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 2015 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 01/08/2015 135 191 12.9 22.40 121 < 1 04/01/2015 144 196 14.1 23.10 5.2 < 1 07/15/2015 132 210 19.1 16.70 < 1 < 1 10/01/2015 140 211 19.3 18.00 186 < 1 Maximum 144 211 19.3 23.10 186 < 1 Minimum 132 191 12.9 16.70 < 1 < 1 Average 138 202 16.4 20.05 78.3 < 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: 2015 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 Maximum 17.2 4904.9 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 14.3 4902.2 12.1 6.15 42.9 58 5.45 0.031 0.125 0.026 0.023 2.84 2.954 #Tests 27 27 27 27 27 22 23 27 27 18 27 27 27 Site: ACMW-04W SOUTH TAHOE PUBLIC UTILITY DISTRICT PINE COUNTY GROUNDWATER QUALITY DA From 1989 To: 2015 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 Maximum 244 329 53.1 16 32.04 10 78.3 3.6 < 2 Minimum 129 180 12.4 2 6.93 < 5 1.1 < 1.0 < 2 Average 158 227 24.6 6 15.40 5 9.5 1.6 < 2 #Tests 27 27 27 23 27 17 27 27 1 Site AC MW-04W Nitrate-Nitrogen and Water Level Chlorides 10 _ 4910 10o k 9 : 4908 90 8 = 4906 80 7 = 4904 70 6 r 4902 m so J m 5 = - 4900 3 o, ,so •--4-.._ £ - E 4 : 4898 li 40 ' as 3 : A Alb. 4896 3 30-' IIIMPIllar.— 2 : 489420, 1 ; - 4892 w +_ .. 10- — 0 - - 4890 eo 4` 4' ey e1 ao o` o"' o' oi\ oo ^° ,e ,e eo e` a'' a`o a\ ae o` o") o`' o\ o° ..` .e .:5 --0—Nitrate —a—Water Level Linear(Nitrate) t Chloride Linear(Chloride) Total Dissolved Solids(TDS) Total Phosphorus 500 _ 0.50 400 i 0.40 300 0.30 J = J E l= 200 — ---.. 0.20 100 0.10 0 0.00 eo' 0` CP CP 41 CP 0` CP Ce 61 O5C' N` '' 'h 0 0` C5'' AP Al 46 o` CP C5 01 C)°' N'S '`'' ♦5 --*—TDS Linear(TDS) ---o—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 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 Site: ACMW-06S SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2015 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 01/08/2015 15.54 5208.0 11.8 7.56 227 0.040 0.134 < 0.020 < 0.010 0.044 0.178 04/01/2015 16.33 5207.2 11.5 9.61 152 0.011 0.162 0.067 < 0.010 0.195 0.357 07/15/2015 16.19 5207.3 13.9 7.30 167 0.045 0.143 0.037 < 0.010 0.100 0.243 10/01/2015 16.55 5207.0 12.7 7.82 216 0.030 0.119 0.025 < 0.010 0.030 0.149 Maximum 16.55 5208.0 13.9 9.61 227 0.045 0.162 0.067 < 0.010 0.195 0.357 Minimum 15.54 5207.0 11.5 7.30 152 0.011 0.119 < 0.020 < 0.010 < 0.030 < 0.149 Average 16.15 5207.3 12.5 8.07 191 0.032 0.140 0.037 < 0.010 0.092 0.232 #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 2015 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 01/08/2015 379 648 57.8 27.5 < 1 < 1 04/01/2015 333 512 75.3 30.7 < 1 < 1 07/15/2015 347 563 62.9 28.2 3.1 < 1 10/01/2015 362 644 46.7 28.1 24.6 < 1 Maximum 379 648 75.3 30.7 24.6 < 1 Minimum 333 512 46.7 27.5 < 1 < 1 Average 355 592 60.7 28.6 7.4 < 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: 2015 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 14.8 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 0.114 15 16.2 5207.3 12.5 8.07 191 0.032 0.140 0.037 < 0.010 0.092 0.232 Maximum 16.4 5207.9 12.8 9.36 258 344 34.00 0.091 1.404 0.410 0.072 0.092 1.479 Minimum 14.5 5204.3 11.3 6.98 169 136 0.65 0.027 0.094 0.021 < 0.010 0.021 0.114 Average 15.5 5205.6 12.1 8.06 208 230 11.10 0.052 0.306 0.108 0.026 0.059 0.367 #Tests 27 27 27 27 27 22 23 27 27 18 27 27 27 Site: ACMW-06S SOUTH TAHOE PUBLIC UTILITY DISTRICT PINE COUNTY GROUNDWATER QUALITY DA From 1989 To: 2015 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 Maximum 454 741 93.4 17 46.3 13 17.6 7.0 < 2 Minimum 315 542 56.8 < 5 22.4 < 4 < 1.1 < 1.0 < 2 Average 385 633 71.8 7 27.4 7 4.5 1.8 < 2 #Tests 27 27 27 23 27 17 27 27 1 Site AC MW-06S Nitrate-Nitrogen &Water Level Chlorides 5 5210 200 180 4 5208 160 140 3 5206 d 120 m - —J 100 _ £2 5204 A 80 60 1 - 5202 40 20 p , . , , . , . . 5200 0 - O0 9' c? 43 4 0bc' O's On) Oh 0 09 4s ,,0 y . ? h 1 O �. "� h 1 A 0 A 0 A of 0 O O O O O —0—Nitrate —e—Water Level Linear(Nitrate) —0—Chloride Linear(Chloride) Total Dissolved Solids (TDS) Total Phosphorus 1000 - 0.4 900 800 0.3 700 600 J - —J E 500 E 0.2 400 300 0.1 200 100 95' 4' 4' q,5 4 0 0'` 0' O 01 Oma' s 4 0 00' 0' O'h 4' 41 90 ON 0O 0h 61 Oma' 4' 45 D —.—TDS Linear(TDS) —a—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 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 Site: ACMW-20 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2015 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 02/10/2015 16.17 5074.13 11.8 6.33 34.7 0.072 < 0.050 < 0.020 < 0.010 0.140 0.169 05/13/2015 8.75 5081.55 11.4 6.16 27.1 0.062 0.059 < 0.020 0.012 0.266 0.337 08/18/2015 11.83 5078.47 13.9 5.98 32.2 0.066 < 0.050 0.021 < 0.010 0.482 0.507 11/04/2015 16.12 5074.18 14.1 6.21 32.0 0.064 0.070 < 0.020 < 0.010 1.160 1.230 Maximum 16.17 5081.55 14.1 6.33 34.7 0.072 0.070 0.021 0.012 1.160 1.230 Minimum 8.75 5074.13 11.4 5.98 27.1 0.062 < 0.050 < 0.020 < 0.010 0.140 0.169 Average 13.22 5077.08 12.8 6.17 31.5 0.066 0.057 0.020 0.011 0.512 0.561 #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 2015 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 02/10/2015 69 83.3 1.69 2.73 2 < 1 05/13/2015 71 82.0 2.31 2.70 27.8 < 1 08/18/2015 68 79.6 1.89 2.90 11 < 1 11/04/2015 59 94.7 2.18 3.50 88.2 < 1 Maximum 71 94.7 2.31 3.50 88.2 < 1 Minimum 59 79.6 1.69 2.7 2 < 1 Average 67 84.9 2.02 2.96 32.3 < 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: 2015 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 Maximum 13.2 5079.7 12.8 6.31 33.4 1.20 0.085 0.073 0.026 0.013 0.946 1.334 Minimum 10.6 5077.1 11.5 6.11 29.7 1.20 0.054 0.051 0.020 0.010 0.512 0.561 Average 11.8 5078.5 12.0 6.19 31.5 1.20 0.068 0.061 0.024 0.012 0.649 0.837 #Tests 4 4 4 4 4 0 1 4 4 4 4 4 4 Site: ACMW-20 SOUTH TAHOE PUBLIC UTILITY DISTRICT PINE COUNTY GROUNDWATER QUALITY DA From 2012 To: 2015 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 Maximum 70 85 2.02 2.96 32 1 Minimum 66 77 1.32 2.20 1 < 1 Average 67 79 1.65 2.46 9 1 #Tests 4 4 4 0 4 0 4 4 0 Site ACMW-20 Nitrate-Nitrogen &Water Level Chlorides 5 5090 50 - 4 I i 5085 40 3 . • 5080 m 30 m E 2 5075 t 20 3 1 5070 10 • 0 - 50650 • ' ' • , 12 13 14 15 12 13 14 15 t Nitrate —E—Water Level t 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 12 13 14 15 12 13 14 15 –TDS —•—Total P Annual Metals Report ACMW-20 Diamond Valley Rd - Paynesville 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 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 Site: ACMW-21 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2015 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 02/10/2015 22.20 4989.13 9.8 6.34 33.4 0.044 < 0.050 < 0.020 < 0.020 0.202 0.243 05/13/2015 18.62 4992.71 10.2 6.34 45.0 0.038 < 0.050 < 0.020 0.011 0.678 0.702 08/18/2015 13.07 4998.26 10.7 6.18 42.6 0.055 0.053 < 0.020 < 0.010 2.930 2.980 11/04/2015 16.84 4994.49 9.8 6.32 45.0 0.073 0.169 < 0.020 < 0.030 1.470 1.640 Maximum 22.20 4998.26 10.7 6.34 45.0 0.073 0.169 < 0.020 0.030 2.930 2.980 Minimum 13.07 4989.13 9.8 6.18 33.4 0.038 < 0.050 < 0.020 < 0.010 0.202 0.243 Average 17.68 4993.65 10.1 6.30 41.5 0.053 0.081 < 0.020 0.018 1.320 1.391 #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 2015 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 02/10/2015 73 86 2.18 3.82 < 1 < 1 05/13/2015 87 127 3.14 3.64 < 1 < 1 08/18/2015 120 179 16.40 6.71 < 1 < 1 11/04/2015 102 148 7.92 5.60 < 1 < 1 Maximum 120 179 16.40 6.71 < 1 < 1 Minimum 73 86 2.18 3.64 < 1 < 1 Average 96 135 7.41 4.94 < 1.0 < 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: 2015 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 Maximum 17.7 4998.0 10.4 6.45 41.5 2.30 0.053 0.124 0.025 0.022 2.065 2.201 Minimum 13.3 4993.6 9.2 6.13 34.2 2.30 0.031 0.081 0.020 0.013 1.003 1.124 Average 14.8 4996.6 10.0 6.29 37.8 2.30 0.043 0.104 0.022 0.017 1.355 1.552 #Tests 4 4 4 4 4 0 1 4 4 4 4 4 4 Site: ACMW-21 SOUTH TAHOE PUBLIC UTILITY DISTRICT PINE COUNTY GROUNDWATER QUALITY DA From 2012 To: 2015 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 Maximum 99 143 12.1 5.76 6 1 Minimum 83 114 7.4 4.06 1 < 1 Average 90 128 8.8 4.73 2 1 #Tests 4 4 4 0 4 0 4 4 0 Site AC MW-21 Nitrate-Nitrogen &Water Level Chlorides 5 5000 50 4 i 4998 40 3 4996 • 30 J - m J m J m _ E E 2 4994 20 — g 1 4992 10 _ ♦_ • • 0 4990 0 - 12 13 14 15 12 13 14 15 —•—Nitrate —a—Water Level +Chloride Total Dissolved Solids (TDS) Total Phosphorus 500 0.50 400 i 0.40 300 _ 0.30 _ J J E - E - 200 0.20 100 - •--- • • • 0.10 0 0.00 12 13 14 15 12 13 14 15 —•—TDS -.-Total P Annual Metals Report ACMW-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 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 Site: ACMW-22 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2015 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 02/10/2015 37.67 4981.61 11.1 6.24 37.7 0.019 0.090 < 0.020 < 0.020 2.53 2.620 05/13/2015 29.14 4990.14 11.8 6.12 37.4 0.016 < 0.050 < 0.020 < 0.010 2.02 2.010 08/18/2015 30.34 4988.94 12.7 6.10 37.9 0.017 0.072 < 0.020 < 0.020 2.34 2.410 11/04/2015 35.93 4983.35 11.4 6.14 36.6 0.014 0.076 < 0.020 < 0.030 2.53 2.610 Maximum 37.67 4990.14 12.7 6.24 37.9 0.019 0.090 < 0.020 < 0.030 2.53 2.620 Minimum 29.14 4981.61 11.1 6.10 36.6 0.014 < 0.050 < 0.020 < 0.010 2.02 2.010 Average 33.27 4986.01 11.8 6.15 37.4 0.017 0.072 < 0.020 < 0.020 2.36 2.413 #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 2015 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 02/10/2015 89 118.0 4.300 1.50 4.1 < 1 05/13/2015 86 126.0 4.300 1.72 1 < 1 08/18/2015 83 109.0 3.970 1.67 < 1 < 1 11/04/2015 78 118.0 4.030 1.81 8.6 < 1 Maximum 89 126 4.300 1.81 8.6 < 1 Minimum 78 109 3.970 1.50 < 1 < 1 Average 84 117.8 4.150 1.68 3.7 < 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: 2015 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 Maximum 33.3 4988.8 11.9 6.28 37.4 2.60 0.062 0.102 0.028 0.020 2.36 2.413 Minimum 30.5 4986.0 10.1 6.15 31.2 2.60 0.017 0.057 0.020 0.010 0.58 0.646 Average 32.2 4987.1 11.1 6.21 34.8 2.60 0.031 0.072 0.024 0.017 1.64 1.619 #Tests 4 4 4 4 4 0 1 4 4 4 4 4 4 Site: ACMW-22 SOUTH TAHOE PUBLIC UTILITY DISTRICT PINE COUNTY GROUNDWATER QUALITY DA From 2012 To: 2015 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 Maximum 84 118 4.15 4.10 4 1 Minimum 63 73 1.12 1.68 < 1 < 1 Average 76 98 3.00 2.33 2 1 #Tests 4 4 4 0 4 0 4 4 0 Site ACMW-22 Nitrate-Nitrogen &Water Level Chlorides 5 5000 50 _ 4 i 4995 40 x 3 4990 > 30 m 2 4985 - 20 1 _ 4980 41 10 p 4975 p 12 13 14 1512 13 14 15 —0—Nitrate tWaterLevel —4—Chloride Total Dissolved Solids (TDS) Total Phosphorus 500 0.50 400 i 0.40 300 0.30 J J 200 £ 0.20 100 0.10 p ; 0.00 12 13 14 15 12 13 14 15 —0—TDS —4—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 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 Site: ACMW-23 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2015 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 02/10/2015 20.00 4958.35 14.6 7.32 176 0.030 < 0.050 < 0.020 < 0.010 1.03 1.050 05/13/2015 20.12 4958.23 14.8 7.27 174 0.031 < 0.050 < 0.020 0.011 1.04 1.080 08/18/2015 26.83 4951.52 15.9 7.56 174 0.038 0.067 < 0.020 < 0.010 0.96 1.020 12/09/2015 20.20 4958.15 14.8 7.26 172 0.033 < 0.050 < 0.020 < 0.010 1.05 1.050 Maximum 26.83 4958.35 15.9 7.56 176 0.038 0.067 < 0.020 0.011 1.05 1.080 Minimum 20.00 4951.52 14.6 7.26 172 0.030 < 0.050 < 0.020 < 0.010 0.96 1.020 Average 21.79 4956.56 15.0 7.35 174 0.033 0.054 < 0.020 < 0.010 1.02 1.050 #Tests 4 4 4 4 4 0 0 4 4 4 4 4 4 Site: ACMW-23 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2015 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 02/10/2015 279 375 4.08 19.9 < 1 < 1 05/13/2015 276 397 4.27 19.7 < 1 < 1 08/18/2015 272 382 4.05 18.1 < 1 < 1 12/09/2015 265 381 4.14 19.2 31.7 < 1 Maximum 279 397 4.27 19.9 31.7 < 1 Minimum 265 375 4.05 18.1 < 1 < 1 Average 273 384 4.14 19.2 8.7 < 1.0 #Tests 4 4 4 0 4 0 4 4 0 Site: ACMW-23 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA From: 2012 To: 2015 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 Maximum 21.8 4959.7 15.6 7.39 177 16.00 0.250 0.091 0.026 < 0.014 1.06 1.142 Minimum 18.6 4956.6 14.9 7.31 174 16.00 0.033 0.054 0.020 < 0.010 1.00 1.010 Average 19.6 4958.8 15.1 7.35 175 16.00 0.134 0.069 0.024 < 0.012 1.03 1.070 #Tests 4 4 4 4 4 0 1 4 4 4 4 4 4 Site: ACMW-23 SOUTH TAHOE PUBLIC UTILITY DISTRICT PINE COUNTY GROUNDWATER QUALITY DA From 2012 To: 2015 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 13 271 379 4.15 19.7 1 < 1 14 271 379 4.23 19.8 1 < 1 15 273 384 4.14 19.2 9 < 1 Maximum 273 384 4.23 19.8 9 1 Minimum 269 378 4.14 17.8 1 < 1 Average 271 380 4.18 19.1 3 < 1 #Tests 4 4 4 0 4 0 4 4 0 Site ACMW-23 Nitrate-Nitrogen &Water Level Chlorides 5 4970 50 - 4 i i 4965 40 x 3 ■ • 0 : 496° > 30 J E 2 4955 3 20 1 -i • + • + i 4950 10 • • • • 04945 0 12 13 14 15 12 13 14 15 —0–Nitrate --s—Water Level —0—Chloride Total Dissolved Solids (TDS) Total Phosphorus 500 0.50 400 i 0.40 300 0.30 J • • •• •• J CO _ CA _ EE 200 0.20 100 1 0.10 00.00 12 13 14 15 12 13 14 15 —0—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 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 Site: ACMW-24 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2015 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 02/10/2015 27.62 4925.63 13.4 6.62 154 0.083 0.060 < 0.020 < 0.020 2.18 2.240 05/13/2015 25.73 4927.52 13.3 6.60 151 0.080 < 0.050 < 0.020 0.012 2.34 2.340 08/18/2015 21.18 4932.07 14.2 6.54 157 0.087 0.082 0.020 < 0.020 1.46 1.540 12/09/2015 26.73 4926.52 13.7 6.55 159 0.071 0.123 < 0.020 < 0.020 1.66 1.780 Maximum 27.62 4932.07 14.2 6.62 159 0.087 0.123 0.020 0.020 2.34 2.340 Minimum 21.18 4925.63 13.3 6.54 151 0.071 < 0.050 < 0.020 0.012 1.46 1.540 Average 25.32 4927.94 13.7 6.58 155 0.080 0.079 < 0.020 0.018 1.91 1.975 #Tests 4 4 4 4 4 0 0 4 4 4 4 4 4 Site: ACMW-24 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2015 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 02/10/2015 333 486 39.8 30.4 < 1 < 1 05/13/2015 345 534 41.1 43.6 < 1 < 1 08/18/2015 362 563 65.4 27.5 < 1 < 1 12/09/2015 340 540 50.2 22.7 < 1 < 1 Maximum 362 563 65.4 43.6 < 1 < 1 Minimum 333 486 39.8 22.7 < 1 < 1 Average 345 531 49.1 31.1 < 1.0. < 1.0 #Tests 4 4 4 0 4 0 4 4 0 Site: ACMW-24 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA From: 2012 To: 2015 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 Maximum 25.4 4928.9 13.9 6.64 168 12.00 0.268 0.166 0.028 0.025 2.18 2.298 Minimum 24.4 4927.9 13.0 6.58 155 12.00 0.080 0.079 0.020 0.018 1.91 1.975 Average 25.1 4928.2 13.5 6.61 163 12.00 0.169 0.124 0.024 0.020 2.07 2.182 #Tests 4 4 4 4 4 0 1 4 4 4 4 4 4 Site: ACMW-24 SOUTH TAHOE PUBLIC UTILITY DISTRICT PINE COUNTY GROUNDWATER QUALITY DA From 2012 To: 2015 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 Maximum 352 552 55.1 38.4 2 1 Minimum 334 523 39.1 28.8 1 1 Average 343 535 47.5 32.4 1 1 #Tests 4 4 4 0 4 0 4 4 0 Site ACMW-24 Nitrate-Nitrogen &Water Level Chlorides 5 4940 100 _ 90 q 1 1 4935 80 : 70 : 3 4930 fi0 o� . �' ■ . : m 50 E . E 2 4,_._.____* •------.— 4925 3 40 1 ..-- 30 30 : 1 i i 4920 20 10 : 04916 p 12 13 14 15 12 13 14 15 —*—Nitrate —a—Water Level - .—Chloride Total Dissolved Solids (TDS) Total Phosphorus 500 0.50 400 i 0.40 • ►• • 300 0.30 JJ CI EE 200 0.20 100 i 0.10 00.00 12 13 14 15 12 13 14 15 —•—TDS —•—Total P Annual Metals Report ACMW-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 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 Site: ACMW-25 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2015 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 02/10/2015 9.93 4932.31 11.5 6.35 44.9 0.042 0.060 < 0.020 < 0.020 1.66 1.720 05/13/2015 9.33 4932.91 13.2 6.33 44.0 0.049 < 0.050 < 0.020 0.012 1.44 1.420 08/18/2015 10.82 4931.42 16.1 6.27 44.4 0.055 0.102 < 0.020 < 0.020 1.40 1.510 11/04/2015 9.10 4933.14 15.2 6.33 43.8 0.042 0.081 < 0.020 < 0.020 1.48 1.560 Maximum 10.82 4933.14 16.1 6.35 44.9 0.055 0.102 < 0.020 < 0.020 1.66 1.720 Minimum 9.10 4931.42 11.5 6.27 43.8 0.042 < 0.050 < 0.020 < 0.012 1.40 1.420 Average 9.80 4932.45 14.0 6.32 44.3 0.047 0.073 < 0.020 < 0.018 1.50 1.553 #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 2015 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 02/10/2015 113 145 8.14 5.56 < 1 < 1 05/13/2015 109 156 8.23 5.76 < 1 < 1 08/18/2015 110 143 10.50 5.32 < 1 < 1 11/04/2015 112 154 11.70 5.52 < 1 < 1 Maximum 113 156 11.70 5.76 < 1 < 1 Minimum 109 143 8.14 5.32 < 1 < 1 Average 111 150 9.64 5.54 < 1.0 < 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: 2015 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 Maximum 9.8 4933.5 14.0 6.41 47.8 0.38 0.078 0.137 0.026 0.040 3.13 3.303 Minimum 8.7 4932.4 13.2 6.30 44.3 0.38 0.047 0.053 0.020 0.018 1.50 1.553 Average 9.2 4933.0 13.6 6.35 46.6 0.38 0.057 0.097 0.024 0.025 2.07 2.202 #Tests 4 4 4 4 4 0 1 4 4 4 4 4 4 Site: ACMW-25 SOUTH TAHOE PUBLIC UTILITY DISTRICT PINE COUNTY GROUNDWATER QUALITY DA From 2012 To: 2015 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 Maximum 125 163 10.9 7.23 3 1 Minimum 111 150 9.0 5.54 1 1 Average 119 157 9.9 6.44 2 1 #Tests 4 4 4 0 4 0 4 4 0 Site AC MW-25 Nitrate-Nitrogen &Water Level Chlorides 5 4950 50 4 4945 40 x 3 494° > 30 JJ J - E m 2 -4935 3 E 20 1 - 4930 10 i .---.-t- 10-_-_______. 0 - 4925 0 12 13 14 15 12 13 14 15 —.—Nitrate —.—WaterLevel —0—Chloride Total Dissolved Solids (TDS) Total Phosphorus 500 e 0.50 400 i 0.40 300 _ 0.30 _ J J E - E - 200 0.20 100 0.10 • 0 0.00 12 13 14 15 12 13 14 15 —+—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 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 Site: ACMW-26 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2015 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 02/10/2015 15.84 4879.76 11.4 6.38 53.9 0.080 0.080 < 0.020 0.024 1.820 1.920 05/13/2015 9.80 4885.80 10.7 6.30 46.7 0.078 < 0.050 < 0.020 0.011 8.600 8.590 08/18/2015 14.74 4880.86 13.4 6.38 61.5 0.080 0.245 < 0.020 0.023 2.110 2.380 11/04/2015 16.20 4879.40 12.5 6.39 67.3 0.078 0.210 < 0.020 < 0.020 1.600 1.810 Maximum 16.20 4885.80 13.4 6.39 67.3 0.080 0.245 < 0.020 0.024 8.600 8.590 Minimum 9.80 4879.40 10.7 6.30 46.7 0.078 < 0.050 < 0.020 < 0.011 1.600 1.810 Average 14.15 4881.46 12.0 6.36 57.4 0.079 0.146 < 0.020 0.020 3.533 3.675 #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 2015 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 02/10/2015 147 216 23.1 8.28 < 1 < 1 05/13/2015 199 314 28.5 15.30 9.7 2 08/18/2015 150 225 19.5 9.18 3.1 < 1 11/04/2015 158 262 25.3 9.83 < 1 < 1 Maximum 199 314 28.5 15.30 9.7 2 Minimum 147 216 19.5 8.28 < 1 < 1 Average 164 254 24.1 10.65 3.7 1.3 #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: 2015 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 12.7 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 Maximum 14.1 4884.2 13.4 6.46 65.4 1.00 0.107 0.229 0.026 0.033 3.533 3.675 Minimum 11.4 4881.5 12.0 6.36 57.4 1.00 0.079 0.146 0.020 0.020 1.296 1.481 Average 13.0 4882.6 12.7 6.39 61.5 1.00 0.095 0.172 0.023 0.027 2.004 2.306 #Tests 4 4 4 4 4 0 1 4 4 4 4 4 4 Site: ACMW-26 SOUTH TAHOE PUBLIC UTILITY DISTRICT PINE COUNTY GROUNDWATER QUALITY DA From 1989 To: 2015 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 Maximum 164 254 24.1 10.65 7 6 Minimum 137 200 16.3 6.66 4 1 Average 150 225 19.7 8.42 6 3 #Tests 4 4 4 0 4 0 4 4 0 Site AC MW-26 Nitrate-Nitrogen &Water Level Chlorides 5 4895 50 4 i i 4890 40 3 4985 ,3 30 - _J J W 2 4880 3 20 • 1 4875 10 p4870 0 12 13 14 15 12 13 14 15 t Nitrate —0—Water Level —•—Chloride Total Dissolved Solids (TDS) Total Phosphorus 500 0.50 400 0.40 300 0.30 J J 71 E 200 0.20 - 100 i 0.10 r ____—.. ' 00.00 12 13 14 15 12 13 14 15 --0—TDS —}-Total P 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 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 DIAMOND VALLEY RANCH MONITORING WELLS Site: ACMW-07S SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2015 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 02/04/2015 62.57 5511.82 10.8 6.91 43.9 0.071 < 0.050 < 0.020 < 0.010 0.283 0.293 05/19/2015 63.21 5511.18 11.0 6.69 44.4 0.052 < 0.050 < 0.020 < 0.010 0.282 0.310 08/19/2015 65.52 5508.87 12.4 6.81 44.0 0.046 < 0.050 < 0.020 < 0.010 0.284 0.256 10/28/2015 67.37 5507.02 10.8 6.84 45.0 0.041 < 0.050 < 0.020 < 0.010 0.283 0.229 Maximum 67.37 5511.82 12.4 6.91 45.0 0.071 < 0.050 < 0.020 < 0.010 0.284 0.310 Minimum 62.57 5507.02 10.8 6.69 43.9 0.041 < 0.050 < 0.020 < 0.010 0.282 0.229 Average 64.67 5509.72 11.3 6.81 44.3 0.053 < 0.050 < 0.020 < 0.010 0.283 0.272 #Tests 4 4 4 4 4 0 0 4 4 4 4 4 4 Site: ACMW-07S SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2015 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 02/04/2015 88 107 1.38 2.32 < 1 < 1 05/19/2015 87 114 1.43 2.37 < 1 < 1 08/19/2015 88 92.8 1.40 2.32 < 1 < 1 10/28/2015 86 101 1.40 2.36 < 1 < 1 Maximum 88 114 1.43 2.37 < 1 < 1 Minimum 86 93 1.38 2.32 < 1 < 1 Average 87 104 1.40 2.34 < 1 < 1 #Tests 4 4 4 0 4 0 4 4 0 Site: ACMW-07S SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA From: 2009 To: 2015 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 61.1 5513.3 11.9 7.60 54 43 1.53 0.049 0.073 < 0.010 0.286 0.329 10 61.2 5512.0 11.2 7.34 50 0.040 < 0.050 < 0.010 0.205 0.255 11 60.5 5513.9 10.9 6.42 43 8.90 0.043 0.075 < 0.010 0.379 0.464 12 64.8 5509.6 10.8 6.52 51 2.80 0.092 0.069 < 0.020 < 0.010 0.344 0.423 13 63.6 5510.8 13.5 6.99 48 0.075 < 0.050 0.021 < 0.010 0.284 0.273 14 62.5 5511.9 11.2 7.02 46 0.050 0.066 0.029 < 0.010 0.285 0.283 15 64.7 5509.7 11.3 6.81 44 0.053 < 0.050 < 0.020 < 0.010 0.283 0.272 Maximum 64.8 5513.9 13.5 7.60 54 43 8.90 0.092 0.075 0.029 0.010 0.379 0.464 Minimum 60.5 5509.6 10.8 6.42 43 43 1.53 0.040 < 0.050 0.020 < 0.010 0.205 0.255 Average 62.6 5511.6 11.5 6.96 48 43 4.41 0.057 0.062 0.022 0.010 0.295 0.328 #Tests 7 7 7 7 7 1 3 7 7 4 7 7 7 Site: ACMW-07S SOUTH TAHOE PUBLIC UTILITY DISTRICT PINE COUNTY GROUNDWATER QUALITY DA From 1989 To: 2015 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 96 106 1.33 8 3.23 < 1 < 1 First year of sampling 10 82 109 1.25 2.73 183 < 1 11 75 98 1.52 1.99 1 < 1 12 96 115 1.54 3.44 < 1 < 1 13 91 98 1.41 2.65 < 1 < 1 14 85 101 1.43 2.52 < 1 < 1 15 87 104 1.40 2.34 < 1 < 1 Maximum 96 115 1.54 8 3.44 183 < 1.0 Minimum 75 98 1.25 8 1.99 < 1 < 1.0 Average 87 104 1.41 8 2.70 27 < 1.0 #Tests 7 7 7 1 7 0 7 7 0 Site AC MW-07S Nitrate-Nitrogen &Water Level Chlorides 5 5520 50 I - ' 4 5515 40 I .-------"Ir-------4\-------a----- e 3 - 5510 > 30 -I43 J CO E m E 2 , 5505 3 20 1 1 5500 10 0 . 5495 0 . . • • • • • 09 10 11 12 13 14 15 09 10 11 12 13 14 15 t Nitrate —a—Water Level Linear(Nitrate) —«—Chloride Linear(Chloride) Total Dissolved Solids(TDS) Total Phosphorus 500 0.4 400 - 0.3 300 J - J m - w 0.2 E - E 200 0.1 100 0 0.0 . 09 10 11 12 13 14 15 09 10 11 12 13 14 15 —•--TDS Linear(TDS) — Total P Linear(Total P) Annual Metals Report ACMW-07S Diamond Valley Ranch Ca Mg K Na Al As Ba Be Ag Cd Cr Cu ACMW-07S 06/18/2009 14.1 1.39 1.73 7.74 33 <2 19 <1 14.4 <0.5 <1 <20 07/08/2010 13 1.6 <1 3.6 44 <1 27 <1 <0.5 <0.5 <1 <2 07/13/2011 12.5 2.65 1.07 4.27 327 <1 30.9 <1 <0.5 <0.5 <1 <2 07/26/2012 13.6 2.5 1.29 5.49 323 <1 24.8 <1 <10 <0.5 <1 <20 07/09/2014 12.5 2.17 1.34 5.88 26.6 <1 23.3 <1 <0.5 <0.5 <1 <2 08/19/2015 11.5 2.04 1.28 5.41 88.2 <1 25.1 <1 <0.5 <0.5 <1 <2 Fe Hg Mn Mo Ni Pb Se Sb TI V Zn ACMW-07S 06/18/2009 76.1 <0.2 <20 <2 <5 <2.5 <5 <1 <1 16 13.8 07/08/2010 35 <0.2 4.7 <2 <5 <0.5 <5 <1 <1 4.4 <20 07/13/2011 247 <0.2 12.9 <2 <5 <0.5 <5 <1 <1 <3 <20 07/26/2012 116 <0.2 <20 2.21 <5 <2.5 <5 <1 <1 6.39 <10 07/09/2014 26.3 <0.2 <2 <2 <5 <0.5 <5 <1 <1 5.08 <20 08/19/2015 91.9 <0.2 4.19 <2 <5 <0.5 <5 <1 <1 5.32 <20 Site: ACMW-08N SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2015 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 02/04/2015 6.37 5458.08 11.6 6.86 74.5 0.040 < 0.050 < 0.020 < 0.010 0.628 0.627 05/19/2015 6.89 5457.56 12.0 6.68 77.6 0.059 < 0.050 < 0.020 < 0.010 0.631 0.625 08/19/2015 8.85 5455.60 13.4 6.79 80.0 0.041 < 0.050 < 0.020 < 0.010 0.664 0.647 10/28/2015 9.29 5455.16 11.9 6.91 81.2 0.038 < 0.050 < 0.020 < 0.010 0.647 0.620 Maximum 9.29 5458.08 13.4 6.91 81.2 0.059 < 0.050 < 0.020 < 0.010 0.664 0.647 Minimum 6.37 5455.16 11.6 6.68 74.5 0.038 < 0.050 < 0.020 < 0.010 0.628 0.620 Average 7.85 5456.60 12.2 6.81 78.3 0.045 < 0.050 < 0.020 < 0.010 0.643 0.630 #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 2015 Total Coli E. co/i 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 02/04/2015 116 160 1.01 1.00 579.4 < 1 05/19/2015 119 174 1.11 1.16 5.2 < 1 08/19/2015 122 156 1.11 1.16 4.1 < 1 10/28/2015 122 163 1.10 1.18 < 1 < 1 Maximum 122 174 1.11 1.18 579 < 1 Minimum 116 156 1.01 1.00 < 1 < 1 Average 120 163 1.08 1.13 147 < 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: 2015 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 Maximum 7.9 5460.3 12.4 7.02 83 53 0.22 0.052 0.127 0.025 < 0.010 0.744 0.808 Minimum 4.1 5456.6 11.7 6.50 62 53 0.04 0.039 0.050 0.020 < 0.010 0.361 0.391 Average 5.6 5458.9 12.1 6.82 76 53 0.11 0.043 0.066 0.022 < 0.010 0.598 0.634 #Tests 7 7 7 7 7 1 3 7 7 4 7 7 7 Site: ACMW-08N SOUTH TAHOE PUBLIC UTILITY DISTRICT PINE COUNTY GROUNDWATER QUALITY DA From 1989 To: 2015 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 09 106 142 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 12 130 165 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 Maximum 130 170 5.46 6 1.80 147.4 < 1.0 Minimum 106 142 0.77 < 6 1.00 < 1.0 < 1.0 Average 117 162 1.91 6 1.33 27.1 < 1.0 #Tests 7 7 7 1 7 0 7 7 0 Site ACMW-08N Nitrate-Nitrogen &Water Level Chlorides 5 5475 40 ' 4 - 5470 . 30 z 3 5465 m ' J J O1 m 20 E E 2 I • i - 5460 0 1 — - 5455 10 0 5450 0 09 10 11 12 13 14 15 09 10 11 12 13 14 15 —*—Nitrate —N—Water Level —4—Chloride Linear(Chloride) Total Dissolved Solids (TDS) Total Phosphorus 500 0.4 _ 400 0.3 300 ,J . J E - E 0.2 200 0.1 100 • 4 4 - -• --•-- 0 . 0.0 09 10 11 12 13 14 15 09 10 11 12 13 14 15 —4—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 07/10/2013 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 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 Site: ACMW-09D SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2015 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 03/17/2015 34.34 5476.22 12.8 6.49 31.8 0.053 < 0.050 < 0.020 < 0.010 0.811 0.691 06/11/2015 35.57 5474.99 14.3 6.20 30.7 0.057 < 0.050 < 0.020 < 0.010 0.855 0.761 09/23/2015 38.35 5472.21 13.6 6.49 29.7 0.063 < 0.050 < 0.020 < 0.010 0.926 0.744 11/18/2015 39.48 5471.08 12.3 6.52 31.1 0.058 < 0.050 < 0.020 < 0.010 0.937 0.766 Maximum 39.48 5476.22 14.3 6.52 31.8 0.063 < 0.050 < 0.020 < 0.010 0.937 0.766 Minimum 34.34 5471.08 12.3 6.20 29.7 0.053 < 0.050 < 0.020 < 0.010 0.811 0.691 Average 36.94 5473.63 13.3 6.43 30.8 0.058 < 0.050 < 0.020 < 0.010 0.882 0.741 #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 2015 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 03/17/2015 84 79.4 1.40 3.46 < 1 < 1 06/11/2015 75 88.1 1.44 3.34 < 1 < 1 09/23/2015 84 79.9 1.40 3.33 < 1 < 1 11/18/2015 84 78 1.39 4.12 < 1 < 1 Maximum 84 88 1.44 4.12 < 1 < 1 Minimum 75 78 1.39 3.33 < 1 < 1 Average 82 81 1.41 3.56 < 1 < 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: 2015 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 Maximum 38.7 5483.2 13.3 6.68 34 25 4.43 0.107 0.121 0.027 < 0.015 1.077 1.167 Minimum 27.4 5471.9 12.2 6.22 31 25 0.83 0.057 < 0.050 0.020 < 0.010 0.701 0.661 Average 33.7 5476.7 12.9 6.42 32 25 2.29 0.068 0.069 0.022 < 0.011 0.837 0.843 #Tests 7 7 7 7 7 1 3 7 7 4 7 7 7 Site: ACMW-09D SOUTH TAHOE PUBLIC UTILITY DISTRICT PINE COUNTY GROUNDWATER QUALITY DA From 1989 To: 2015 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 Maximum 87 85 1.61 5 3.57 5.2 2.8 Minimum 79 76 1.28 < 5 2.29 < 1.0 < 1.0 Average 82 80 1.40 5 2.98 2.2 1.4 #Tests 7 7 7 1 7 0 7 7 0 Site ACMW-09D Nitrate-Nitrogen &Water Level Chlorides 5 5485 50 4 1 5480 40 c 3 5476 m 30 m J of - J m E E 2 5470 w20 1 . 5465 10 - •--- 0 5460 0 • • • • ' . 09 10 11 12 13 14 15 09 10 11 12 13 14 15 —•--Nitrate —s--Water Level Linear(Nitrate) t Chloride Linear(Chloride) Total Dissolved Solids (TDS) Total Phosphorus 500 0.4 400 _ 0.3 300 J J - 0.2 200 0.1 100 _ • • 00.0 09 10 11 12 13 14 15 09 10 11 12 13 14 15 —•—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 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 Site: ACMW-10 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2015 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 03/17/2015 31.07 5503.12 12.2 6.40 77.4 0.034 < 0.050 < 0.020 < 0.010 0.357 0.339 06/11/2015 33.00 5501.19 14.6 6.35 70.3 0.040 < 0.050 < 0.020 < 0.010 0.251 0.283 09/23/2015 34.74 5499.45 13.2 6.34 77.6 0.041 < 0.050 < 0.020 < 0.010 0.213 0.195 11/18/2015 34.95 5499.24 12.3 6.35 79.4 0.043 < 0.050 < 0.020 < 0.010 0.219 0.212 Maximum 34.95 5503.12 14.6 6.40 79.4 0.043 < 0.050 < 0.020 < 0.010 0.357 0.339 Minimum 31.07 5499.24 12.2 6.34 70.3 0.034 < 0.050 < 0.020 < 0.010 0.213 0.195 Average 33.44 5500.75 13.1 6.36 76.2 0.040 < 0.050 < 0.020 < 0.010 0.260 0.257 #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 2015 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 03/17/2015 125 171 4.55 2.74 < 1 < 1 06/11/2015 122 174 4.84 3.61 < 1 < 1 09/23/2015 135 182 4.49 2.58 < 1 < 1 11/18/2015 132 172 4.34 2.57 < 1 < 1 Maximum 135 182 4.84 3.61 < 1.0 < 1.0 Minimum 122 171 4.34 2.57 < 1.0 < 1.0 Average 129 175 4.56 2.88 < 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: 2015 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 0.212 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 Maximum 34.3 5508.1 13.1 6.53 113 100 1.51 0.212 0.122 0.030 < 0.010 0.260 0.280 Minimum 25.7 5499.9 10.8 6.36 72 100 1.20 0.035 0.050 0.020 < 0.010 0.113 0.156 Average 30.2 5503.6 12.1 6.45 88 100 1.35 0.066 0.065 0.023 < 0.010 0.170 0.218 #Tests 7 7 7 7 7 1 2 7 7 4 7 7 7 Site: ACMW-10 SOUTH TAHOE PUBLIC UTILITY DISTRICT PINE COUNTY GROUNDWATER QUALITY DA From 1989 To: 2015 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 Maximum 162 248 5.28 < 5 3.60 < 2.4 < 1.0 Minimum 114 159 4.03 < 5 2.31 < 1.0 < 1.0 Average 137 193 4.68 < 5 3.08 < 1.2 < 1.0 #Tests 7 7 7 1 7 0 7 7 0 Site AC MW-10 Nitrate-Nitrogen &Water Level Chlorides 1.0 5515 50 0.8 5510 40 ce 0.6 . ' 5505 T; 30 m J J 0.4 - - 5500 3 20 0.2 5495 10 0.0 5490 0 , 09 10 11 12 13 14 15 09 10 11 12 13 14 15 —•—Nitrate —a—Water Level Linear(Nitrate) —*—Chloride Total Dissolved Solids (TDS) Total Phosphorus 500 0.4 _ 400 0.3 300 J -J E _E al 0.2 200 0.1 100 0 0.0 09 10 11 12 13 14 15 09 10 11 12 13 14 15 —*--TDS Linear(TDS) —e—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 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 Site: ACMW-11 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2015 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 03/17/2015 20.47 5482.54 8.9 6.43 23.8 0.017 < 0.050 < 0.020 < 0.030 1.060 0.918 06/11/2015 23.35 5479.66 8.9 6.05 30.3 0.016 < 0.050 < 0.020 < 0.030 1.200 1.00 09/23/2015 27.21 5475.8 11.1 6.37 31.0 0.019 < 0.050 < 0.020 < 0.010 1.610 1.33 11/18/2015 28.48 5474.53 9.7 6.3 27.5 0.020 0.050 < 0.020 < 0.010 1.240 1.29 Maximum 28.48 5482.54 11.1 6.43 31.0 > 0.020 0.050 < 0.020 < 0.030 1.610 1.330 Minimum 20.47 5474.53 8.9 6.05 23.8 0.016 < 0.050 < 0.020 < 0.010 1.060 0.918 Average 24.88 5478.13 9.7 6.29 28.2 0.018 0.050 < 0.020 < 0.020 1.278 1.135 #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 2015 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 03/17/2015 58 67.5 1.81 4.49 < 1 < 1 06/11/2015 61 92.9 1.92 3.62 < 1 < 1 09/23/2015 73 91.2 2.02 4.91 < 1 < 1 11/18/2015 73 77.7 2.03 4.58 1 < 1 Maximum 73 92.9 2.03 4.91 1 < 1 Minimum 58 67.5 1.81 3.62 < 1 < 1 Average 66 82.3 1.95 4.40 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: 2015 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 5478.1 9.7 6.29 28 0.018 0.050 < 0.020 < 0.020 1.278 1.135 Maximum 27.1 5485.4 13.6 6.60 41 36 3.60 0.123 0.207 0.032 0.025 2.773 2.873 Minimum 17.2 5475.9 9.7 5.95 28 36 1.23 0.016 0.050 0.020 < 0.010 0.258 0.290 Average 22.4 5480.6 11.1 6.23 34 36 2.11 0.038 0.095 0.024 0.014 1.059 1.091 #Tests 7 7 7 7 7 1 3 7 7 4 7 7 7 Site: ACMW-11 SOUTH TAHOE PUBLIC UTILITY DISTRICT PINE COUNTY GROUNDWATER QUALITY DA From 1989 To: 2015 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 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 78 86 1.94 5 3.03 < 1.0 < 1.0 #Tests 7 7 7 1 7 0 7 7 0 Site ACMW-1 1 Nitrate-Nitrogen &Water Level Chlorides 5 5495 50 4 5490 40 v 3 5485 1 30 J • c J a 2 ::: 10 -- 0 5470 0 09 10 11 12 13 14 15 09 10 11 12 13 14 15 +Chloride Linear(Chloride) —0—Nitrate -�—Water Level ( Total Dissolved Solids (TDS) Total Phosphorus 500 - 0.4 400 0.3 300 - J -J E - E 0.2 200 - 0.1 100 09 10 11 12 13 14 15 09 10 11 12 13 14 15 —6—TDS —Linear(TDS) -.-Total P —Linear(Total P) 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 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 Site: ACMW-12 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2015 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 02/04/2015 30.75 5494.29 11.4 6.71 49.1 0.050 < 0.050 < 0.020 < 0.010 0.585 0.569 05/19/2015 32.63 5492.41 12.5 6.53 49.7 0.051 < 0.050 < 0.020 < 0.010 0.568 0.590 08/19/2015 35.42 5489.62 12.8 6.63 50.7 0.033 < 0.050 < 0.020 < 0.010 0.554 0.563 10/28/2015 36.99 5488.05 11.5 6.65 50.7 0.030 < 0.050 < 0.020 < 0.010 0.526 0.481 Maximum 36.99 5494.29 12.8 6.71 50.7 0.051 < 0.050 < 0.020 < 0.010 0.585 0.590 Minimum 30.75 5488.05 11.4 6.53 49.1 0.030 < 0.050 < 0.020 < 0.010 0.526 0.481 Average 33.95 5491.09 12.1 6.63 50.1 0.041 < 0.050 < 0.020 < 0.010 0.558 0.551 #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 2015 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 02/04/2015 100 118 1.58 2.68 < 1 < 1 05/19/2015 98 128 1.67 2.72 < 1 < 1 08/19/2015 100 115 1.67 2.68 < 1 < 1 10/28/2015 101 115 1.61 2.70 < 1 < 1 Maximum 101 128 1.67 2.72 < 1 < 1 Minimum 98 115 1.58 2.68 < 1 < 1 Average 100 119 1.63 2.70 < 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: 2015 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 0.557 0.585 15 33.9 5491.1 12.1 6.63 50 0.041 < 0.050 < 0.020 < 0.010 0.558 0.551 Maximum 34.9 5494.2 12.3 6.89 64 60 0.30 0.053 < 0.232 0.025 < 0.010 0.774 0.804 Minimum 30.7 5490.1 11.1 6.59 50 60 0.04 0.032 < 0.050 0.020 < 0.010 0.553 0.551 Average 32.2 5492.5 11.7 6.75 56 60 0.18 0.038 < 0.085 0.023 < 0.010 0.621 0.687 #Tests 7 7 7 7 7 1 3 7 7 4 7 7 7 Site: ACMW-12 SOUTH TAHOE PUBLIC UTILITY DISTRICT PINE COUNTY GROUNDWATER QUALITY DA From 1989 To: 2015 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 15 100 119 1.63 2.70 < 1.0 < 1.0 Maximum 114 142 1.89 7 4.26 < 1.0 < 1.0 Minimum 99 115 1.48 7 2.70 < 1.0 < 1.0 Average 105 126 1.61 7 3.39 < 1.0 < 1.0 #Tests 7 7 7 1 7 0 7 7 0 Site ACMW-12 Nitrate-Nitrogen &Water Level Chlorides 5 5505 50 - 4 I i 5500 40 c 3 5495 ro 30 ro J J E 2 / . t £ 5490 3 20 1 1 5485 10 • 4- • • • • • 0 - 5480 0 09 10 11 12 13 14 15 09 10 11 12 13 14 15 —*--Nitrate —s—Water Level —• —Chloride Total Dissolved Solids (TDS) Total Phosphorus 500 0.4 400 0.3 300 J -1 w E 0.2 E 200 0.1 100 .----°---•--•— • • 0 0.0 09 10 11 12 13 14 15 09 10 11 12 13 14 15 --*—TDS —0—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 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 Site: ACMW-13 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2015 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 02/04/2015 10.66 5543.89 8.9 6.33 39.1 0.023 < 0.050 < 0.020 < 0.010 0.053 0.097 05/19/2015 11.77 5542.78 10.0 6.12 35.1 0.028 0.068 < 0.020 < 0.010 0.029 0.097 08/19/2015 13.86 5540.69 13.0 6.26 37 0.024 0.104 < 0.020 < 0.010 0.045 0.149 10/28/2015 13.54 5541.01 10.8 6.11 41 0.023 < 0.050 < 0.020 < 0.010 0.072 0.117 Maximum 13.86 5543.89 13.0 6.33 41 0.028 0.104 < 0.020 < 0.010 0.072 0.149 Minimum 10.66 5540.69 8.9 6.11 35 0.023 < 0.050 < 0.020 < 0.010 0.029 0.097 Average 12.46 5542.09 10.7 6.21 38 0.025 0.068 < 0.020 < 0.010 0.050 0.115 #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 2015 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 02/04/2015 112 91.9 1.38 1.87 < 1 < 1 05/19/2015 98 91.7 1.44 2.16 < 1 < 1 08/19/2015 101 76.5 1.36 2.13 < 1 < 1 10/28/2015 100 90.9 1.50 2.09 < 1 < 1 Maximum 112 91.9 1.50 2.16 < 1 < 1 Minimum 98 76.5 1.36 1.87 < 1 < 1 Average 103 87.8 1.42 2.06 < 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: 2015 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 Maximum 12.5 5544.1 10.7 6.45 42 54.80 0.658 0.135 0.027 0.014 0.113 0.223 Minimum 10.4 5542.1 8.7 6.15 37 54.80 0.025 0.068 0.020 < 0.010 0.045 0.115 Average 11.3 5543.3 10.1 6.30 39 54.80 0.413 0.097 0.024 0.011 0.075 0.171 #Tests 4 4 4 4 4 0 1 4 4 4 4 4 4 Site: ACMW-13 SOUTH TAHOE PUBLIC UTILITY DISTRICT PINE COUNTY GROUNDWATER QUALITY DA From 2012 To: 2015 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 Maximum 145 90 1.42 2.62 1 < 1.0 Minimum 98 80 1.36 2.06 1 < 1.0 Average 114 86 1.39 2.29 1 < 1.0 #Tests 4 4 4 0 4 0 4 4 0 Site ACMW-13 Nitrate-Nitrogen &Water Level Chlorides 2.5 5550 50 2.0 5545 40 iv 1.5 5540 t 30 J 0 J E m E 1.0 5535 3 20 0.5 I 5530 10 • • • • •♦ ♦ • • 0.0 5525 0 12 13 14 15 12 13 14 15 --0—Nitrate —II—Water Level —•—Chloride Linear(Chloride) Total Dissolved Solids (TDS) Total Phosphorus 500 1.0 400 0.8 300 0.6 J - J 1= 200 0.4 11141141110 100 0.2 0 , 0.0 , 12 13 14 15 12 13 14 15 1 --4--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 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 Site: ACMW-14 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2015 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 03/17/2015 18.11 5529.09 11.4 6.17 30.1 0.019 < 0.050 < 0.020 < 0.010 0.745 0.776 06/11/2015 20.20 5527.00 12.0 6.18 38.7 0.040 < 0.050 < 0.020 < 0.010 0.544 0.565 09/23/2015 23.54 5523.66 11.8 6.34 40.9 0.052 < 0.050 < 0.020 < 0.010 0.469 0.462 11/18/2015 22.00 5525.20 10.5 6.24 41.5 0.057 < 0.050 < 0.020 < 0.010 0.503 0.468 Maximum 23.54 5529.09 12.0 6.34 41.5 0.057 < 0.050 < 0.020 < 0.010 0.745 0.776 Minimum 18.11 5523.66 10.5 6.17 30.1 0.019 < 0.050 < 0.020 < 0.010 0.469 0.462 Average 20.96 5526.24 11.4 6.23 37.8 0.042 < 0.050 < 0.020 < 0.010 0.565 0.568 #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 2015 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 03/17/2015 68 78.5 1.29 3.16 < 1 < 1 06/11/2015 72 102.0 1.28 2.26 < 1 < 1 09/23/2015 78 98.4 1.16 2.02 < 1 < 1 11/18/2015 79 93.9 1.08 2.02 < 1 < 1 Maximum 79 102.0 1.29 3.16 < 1 < 1 Minimum 68 78.5 1.08 2.02 < 1 < 1 Average 74 93.2 1.20 2.37 < 1 < 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: 2015 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 Maximum 21.0 5529.0 11.4 6.29 42 0.75 0.056 0.078 0.026 0.012 0.706 0.698 Minimum 18.2 5526.2 10.8 6.12 37 0.75 0.042 0.050 0.020 < 0.010 0.429 0.497 Average 19.5 5527.7 11.0 6.21 38 0.75 0.046 0.058 0.023 0.010 0.544 0.575 #Tests 4 4 4 4 4 0 1 4 4 4 4 4 4 Site: ACMW-14 SOUTH TAHOE PUBLIC UTILITY DISTRICT PINE COUNTY GROUNDWATER QUALITY DA From 2012 To: 2015 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 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 Maximum 77 94 1.45 2.70 1 < 1 Minimum 69 84 1.20 1.73 1 < 1 Average 73 89 1.31 2.18 1 < 1 #Tests 4 4 4 0 4 0 4 4 0 Site ACMW-14 Nitrate-Nitrogen &Water Level Chlorides 5 - 5545 50 4 - 5540 40 c 3 5535 ro 30 J N0 J J iii E II E 2 5530 3 20 1 5525 10 • 0 5520 0 • • • 4 12 13 14 15 12 13 14 15 --•--Nitrate —a—Water Level —•—Chloride Linear(Chloride) Total Dissolved Solids(TDS) Total Phosphorus 500 0.4 400 0.3 300 J J w w 0.2 E - E 200 0.1 100 • 00.0 12 13 14 15 12 13 14 15 —.—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 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 Site: ACMW-15 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2015 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 03/11/2015 25.20 5475.40 11.9 6.13 27.3 0.025 0.064 < 0.020 < 0.020 1.360 1.430 06/02/2015 26.99 5473.61 12.9 6.09 27.5 0.020 < 0.050 < 0.020 < 0.010 1.570 1.600 09/09/2015 28.63 5471.97 13.3 5.96 27.5 0.027 0.062 < 0.020 < 0.020 1.740 1.800 12/22/2015 30.48 5470.12 Maximum 30.48 5475.40 13.3 6.13 27.5 0.027 0.064 < 0.020 < 0.020 1.740 1.800 Minimum 25.20 5470.12 11.9 5.96 27.3 0.020 < 0.050 < 0.020 < 0.010 1.360 1.430 Average 27.83 5472.78 12.7 6.06 27.4 0.024 0.059 < 0.020 < 0.017 1.557 1.610 #Tests 4 4 3 3 3 0 0 3 3 3 3 3 3 Site: ACMW-15 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2015 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 03/11/2015 69 79.2 1.62 1.80 < 1 < 1 06/02/2015 60 87.2 1.65 1.80 < 1 < 1 09/09/2015 75 91.1 1.64 1.84 < 1 < 1 12/22/2015 Water level too low to collect sample Maximum 75 91.1 1.65 1.84 < 1 < 1 Minimum 60 79.2 1.62 1.80 < 1 < 1 Average 68 85.8 1.64 1.81 < 1 < 1 #Tests 3 3 3 0 3 0 3 3 0 Site: ACMW-15 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA From: 2012 To: 2015 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 4.60 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 Maximum 27.8 5477.0 13.1 6.12 31 4.60 0:042 0.088 0.032 0.017 1.557 1.610 Minimum 23.6 5472.8 12.2 5.97 27 4.60 0.024 < 0.055 0.020 < 0.010 0.659 0.724 Average 25.2 5475.4 12.6 6.06 28 4.60 0.036 0.064 0.025 0.013 1.077 1.134 #Tests 4 4 4 4 4 0 1 4 4 4 4 4 4 Site: ACMW-15 SOUTH TAHOE PUBLIC UTILITY DISTRICT PINE COUNTY GROUNDWATER QUALITY DA From 2012 To: 2015 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 Maximum 68 86 1.64 1.82 < 1 < 1 Minimum 61 72 1.46 1.78 < 1 < 1 Average 65 76 1.57 1.81 < 1 < 1 #Tests 4 4 4 0 4 0 4 4 0 Site AC MW-1 5 Nitrate-Nitrogen &Water Level Chlorides 5 5485 20 4 5480 - 15 3 5475 r - 0 J - J of 10 E . V G E 2 . 5470 5 sass • . • • 0 5460 0 • 12 13 14 15 12 13 14 15 —•—Nitrate —0–Water Level — Chloride Linear(Chloride) Total Dissolved Solids (TDS) Total Phosphorus 500 0.4 400 0.3 300 J - J CD - E 0.2 E 200 0.1 100 0 0.0 . 12 13 14 15 12 13 14 15 — 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 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 Site: ACMW-16 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2015 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 03/11/2015 15.01 5469.52 11.1 6.42 50.3 0.050 0.091 < 0.020 < 0.020 1.500 1.590 06/02/2015 16.95 5467.58 11.7 6.46 51.7 0.055 < 0.050 < 0.020 < 0.010 0.689 0.703 09/09/2015 19.65 5464.88 12.9 6.30 54.9 0.069 < 0.050 < 0.020 < 0.010 0.426 0.367 12/22/2015 20.20 5464.33 12.5 6.45 54.1 0.069 < 0.050 < 0.020 < 0.010 0.489 0.518 Maximum 20.20 5469.52 12.9 6.46 54.9 0.069 0.091 < 0.020 < 0.020 1.500 1.590 Minimum 15.01 5464.33 11.1 6.30 50.3 0.050 < 0.050 < 0.020 < 0.010 0.426 0.367 Average 17.95 5466.58 12.1 6.41 52.8 0.061 0.060 < 0.020 < 0.013 0.776 0.795 #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 2015 Total Coli E. co/i 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 03/11/2015 96 134 2.89 1.92 < 1 < 1 06/02/2015 89 128 2.49 1.33 < 1 < 1 09/09/2015 104 130 2.16 0.95 < 1 < 1 12/22/2015 102 118 1.97 1.06 < 1 < 1 Maximum 104 134 2.89 1.92 1 < 1 Minimum 89 118 1.97 0.95 < 1 < 1 Average 98 128 2.38 1.32 1 < 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: 2015 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 Maximum 18.0 5469.3 12.1 6.43 75 5.60 0.156 0.188 0.029 0.013 2.128 2.290 Minimum 15.2 5466.6 11.6 6.24 52 5.60 0.061 < 0.060 0.020 < 0.010 0.310 0.356 Average 16.7 5467.8 11.8 6.37 61 5.60 0.101 0.095 0.024 0.011 0.904 0.979 #Tests 4 4 4 4 4 0 1 4 4 4 4 4 4 Site: ACMW-16 SOUTH TAHOE PUBLIC UTILITY DISTRICT PINE COUNTY GROUNDWATER QUALITY DA From 2012 To: 2015 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 Maximum 128 156 3.64 1.33 2 < 1 Minimum 98 128 2.38 0.82 < 1 < 1 Average 113 138 3.26 1.18 1 < 1 #Tests 4 4 4 0 4 0 4 4 0 Site ACMW-16 Nitrate-Nitrogen &Water Level Chlorides s 5475 40 4 5470 30 3 : 5465 0 m J 'as 20 E : m` E 2 5460 3 . /N. 10 1 5455 05450 0 . 12 13 14 15 12 13 14 15 —4—Nitrate —f—Water Level —4—Chloride Linear(Chloride) Total Dissolved Solids (TDS) Total Phosphorus 500 0.4 400 0.3 300 J J En - w 0.2 E 200 0.1 100 0 , — 0.0 , 12 13 14 15 12 13 14 15 —.--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 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 Site: ACMW-17 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2015 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 03/11/2015 14.00 5490.92 9.9 6.37 37.7 0.023 < 0.050 < 0.020 < 0.020 0.536 0.557 06/02/2015 16.88 5488.04 10.3 6.37 33.7 0.020 < 0.050 < 0.020 < 0.010 0.505 0.538 09/09/2015 19.52 5485.40 13.2 6.23 35.0 0.028 < 0.050 < 0.020 < 0.010 0.347 0.286 12/22/2015 18.88 5486.04 10.7 6.24 35.8 0.028 < 0.050 < 0.020 < 0.010 0.412 0.438 Maximum 19.52 5490.92 13.2 6.37 37.7 0.028 < 0.050 < 0.020 < 0.020 0.536 0.557 Minimum 14.00 5485.40 9.9 6.23 33.7 0.020 < 0.050 < 0.020 < 0.010 0.347 0.286 Average 17.32 5487.60 11.0 6.30 35.6 0.025 < 0.050 < 0.020 < 0.013 0.450 0.455 #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 2015 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 03/11/2015 72 93 1.77 2.68 2 < 1 06/02/2015 66 93 1.68 3.15 < 1 < 1 09/09/2015 74 91 1.47 2.83 < 1 < 1 12/22/2015 68 84 1.45 2.62 < 1 < 1 Maximum 74 93 1.77 3.15 2 < 1 Minimum 66 84 1.45 2.62 < 1 < 1 Average 70 90 1.59 2.82 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: 2015 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 Maximum 17.5 5493.4 11.9 6.40 41 2.80 0.054 0.055 0.030 0.018 1.449 1.516 Minimum 11.5 5487.4 10.9 6.20 36 2.80 0.025 < 0.050 0.020 < 0.010 0.450 0.455 Average 15.4 5489.5 11.4 6.32 38 2.80 0.037 0.051 0.024 0.014 1.039 1.070 #Tests 4 4 4 4 4 0 1 4 4 4 4 4 4 Site: ACMW-17 SOUTH TAHOE PUBLIC UTILITY DISTRICT PINE COUNTY GROUNDWATER QUALITY DA From 2012 To: 2015 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 1 < 1 15 70 90 1.59 2.82 1 < 1 Maximum 79 105 2.25 2.82 1 < 1 Minimum 70 87 1.59 < 2.26 < 1 < 1 Average 75 96 1.91 2.58 1 < 1 #Tests 4 4 4 0 4 0 4 4 0 Site ACMW-17 Nitrate-Nitrogen &Water Level Chlorides 5 - 5500 50 a 5495 40 ge 3 5490 ro 30 J J J • 2 5485 420 1 5480 1Q • • ♦ ♦ 05475 0 12 13 14 15 12 13 14 15 —t—Nitrate —6—Water Level —.—Chloride Linear(Chloride) j Total Dissolved Solids (TDS) Total Phosphorus 500 0.4 400 0.3 300 J J w - w 0.2 E . E 200 0.1 100 • - • • Q , 0.0 12 13 14 15 12 13 14 15 —*—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 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 Site: ACMW-18 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2015 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 03/11/2015 8.99 5461.57 11.5 6.49 38.3 0.031 < 0.050 < 0.020 < 0.020 0.523 0.568 06/02/2015 9.62 5460.94 12.6 6.43 38.2 0.023 < 0.050 < 0.020 < 0.010 0.389 0.427 09/09/2015 11.62 5458.94 14.9 6.32 36.7 0.035 < 0.050 < 0.020 < 0.010 0.343 0.271 12/22/2015 10.98 5459.58 12.5 6.49 34.2 0.034 < 0.050 < 0.020 < 0.010 0.348 0.385 Maximum 11.62 5461.57 14.9 6.49 38.3 0.035 < 0.050 < 0.020 < 0.020 0.523 0.568 Minimum 8.99 5458.94 11.5 6.32 34.2 0.023 < 0.050 < 0.020 < 0.010 0.343 0.271 Average 10.30 5460.26 12.9 6.43 36.9 0.031 < 0.050 < 0.020 < 0.013 0.401 0.413 #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 2015 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 03/11/2015 66 91.4 1.35 2.40 < 1 < 1 06/02/2015 58 97.8 1.50 2.48 < 1 < 1 09/09/2015 65 95.7 1.51 2.51 10.8 < 1 12/22/2015 64 79.0 1.58 2.61 < 1 < 1 Maximum 66 97.8 1.58 2.61 10.8 < 1 Minimum 58 79.0 1.35 2.40 < 1 < 1 Average 63 91.0 1.49 2.50 3 < 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: 2015 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 11.3 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 Maximum 11.3 5462.1 12.9 6.51 37 5.20 0.049 0.135 0.028 0.015 1.500 1.558 Minimum 8.5 5459.2 11.9 6.18 33 5.20 0.031 0.050 0.020 < 0.010 0.401 0.413 Average 10.1 5460.5 12.6 6.40 36 5.20 0.037 0.074 0.023 0.013 0.966 1.024 #Tests 4 4 4 4 4 0 1 4 4 4 4 4 4 Site: ACMW-18 SOUTH TAHOE PUBLIC UTILITY DISTRICT PINE COUNTY GROUNDWATER QUALITY DA From 2012 To: 2015 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 Maximum 67 91 1.87 2.50 3 < 1 Minimum 63 85 1.47 2.23 1 < 1 Average 65 88 1.61 2.36 2 < 1 #Tests 4 4 4 0 4 0 4 4 0 Site ACMW-18 Nitrate-Nitrogen &Water Level Chlorides 5 5475 40 - 4 - - i 5470 30 c 3 5465 ro m J W -Im 20 m E 2 - 5460 3 1 — IIIIIII 10 5455 ' ♦ • • 05450 0 12 13 14 15 12 13 14 15 --•-Nitrate —6—Water Level t Chloride Linear(Chloride) Total Dissolved Solids (TDS) Total Phosphorus 500 0.4 400 0.3 300 J J w - m 0.2 E - E 200 -- 0.1 100 ♦ • k 00.0 12 13 14 15 12 13 14 15 TDS —Linear(TDS) -6-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 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 Site: ACMW-19 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2015 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 03/11/2015 7.81 5409.44 11.2 6.88 96.2 0.097 0.117 0.039 < 0.010 0.010 0.127 06/02/2015 8.80 5408.45 13.4 6.83 90.3 0.098 0.157 0.041 < 0.010 < 0.010 0.157 09/09/2015 8.92 5408.33 15.0 6.78 90.1 0.114 0.087 0.058 < 0.010 < 0.010 0.087 12/22/2015 7.58 5409.67 12.8 6.86 96.1 0.106 0.141 0.063 < 0.010 < 0.010 0.141 Maximum 8.92 5409.67 15.0 6.88 96.2 0.114 0.157 0.063 < 0.010 0.010 0.157 Minimum 7.58 5408.33 11.2 6.78 90.1 0.097 0.087 0.039 < 0.010 < 0.010 0.087 Average 8.28 5408.97 13.1 6.84 93.2 0.104 0.126 0.050 < 0.010 < 0.010 0.128 #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 2015 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 03/11/2015 126 194 2.16 2.60 < 1 < 1 06/02/2015 102 189 2.04 2.27 < 1 < 1 09/09/2015 122 190 2.21 2.22 < 1 < 1 12/22/2015 128 193 3.42 2.06 < 1 < 1 Maximum 128 194 3.42 2.60 < 1 < 1 Minimum 102 189 2.04 2.06 < 1 < 1 Average 120 192 2.46 2.29 < 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: 2015 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 < 0.009 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 0.126 0.050 < 0.010 < 0.010 0.128 Maximum 8.3 5410.2 13.1 6.88 129 6.70 0.129 0.159 0.067 0.012 0.010 0.160 Minimum 7.1 5409.0 12.4 6.75 93 6.70 0.092 < 0.106 0.041 < 0.010 0.009 0.123 Average 7.6 5409.6 12.7 6.82 108 6.70 0.109 0.128 0.052 0.010 0.010 0.134 #Tests 4 4 4 4 4 0 1 4 4 4 4 4 4 Site: ACMW-19 SOUTH TAHOE PUBLIC UTILITY DISTRICT PINE COUNTY GROUNDWATER QUALITY DA From 2012 To: 2015 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 Maximum 154 253 2.97 2.87 3 < 1 Minimum 120 192 2.46 1.62 1 < 1 Average 142 227 2.68 2.19 2 < 1 #Tests 4 4 4 0 4 0 4 4 0 Site ACMW-19 Nitrate-Nitrogen &Water Level Chlorides 1.00 5425 40 0.80 5420 30 0.60 5415 m J >y a J m 20 0.40 . 5410• 10 0.20 5405 0.00 ' • ' 5400 0 . 12 13 14 15 12 13 14 15 —0—Nitrate --0-Water Level —0—Chloride Linear(Chloride) Total Dissolved Solids(TDS) Total Phosphorus 500 0.4 400 0.3 300 J - J m m 0.2 E - E 200 0.1 100 0 0.0 12 13 14 15 12 13 14 15 —+—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 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 ALPINE COUNTY POTABLE WATER WELLS Site: GW-05 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2015 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 02/03/2015 9.7 6.92 61.1 0.051 0.180 < 0.020 < 0.050 4.77 4.95 05/13/2015 12.5 6.28 61.0 0.034 0.050 < 0.020 0.011 4.59 4.62 08/18/2015 15.8 6.28 60.9 0.046 0.153 < 0.020 < 0.040 4.31 4.46 11/04/2015 11.1 6.33 60.9 _ 0.037 < 0.050 < 0.020 < 0.060 5.27 4.78 Maximum 15.8 6.92 61.1 0.051 0.180 < 0.020 < 0.060 5.27 4.95 Minimum 9.7 6.28 60.9 0.034 < 0.050 < 0.020 0.011 4.31 4.46 Average 12.3 6.45 61.0 0.042 0.108 < 0.020 < 0.040 4.74 4.70 #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 2015 Total Fecal TDS EC Chloride COD SO4 Color Cob E.coli Strep Date mg/L umhos mg/L mg/L mg/L Units MPN MPN MPN Comments 02/03/2015 197 282 27.9 11.0 < 1 < 1 05/13/2015 186 298 29.7 11.6 < 1 < 1 08/18/2015 180 276 26.6 11.0 < 1 < 1 11/04/2015 184 290 34.0 13.9 26.2 < 1 Maximum 197 298 34.0 13.9 26.2 < 1 Minimum 180 276 26.6 11.0 < 1 < 1 Average 187 287 29.6 11.9 7.3 < 1 #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: 2015 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 94 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 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 6.57 57.7 96 0.21 0.035 0.107 0.025 0.024 2.855 2.963 #Tests 35 35 35 30 31 35 35 25 33 35 35 Site: GW-05 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA From 1981 To: 2015 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 Maximum 251 366 50.8 11 13.1 5 7.3 2.2 Minimum 155 238 22.8 1 10.8 4 < 1.1 1.0 Average 192 288 34.2 4 11.8 5 2.1 1.5 #Tests 35 35 34 31 16 31 35 35 0 Site GW-05 Nitrate-Nitrogen Chlorides 10 _ 100 _ 9 _ 90 8 : 80 : 7 : 70 : 6 : 60 E5 E 50 4 : 40 3 : ��r 30 2 : 20 : 1 : 10 =- 0 O 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 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 �—Nitrate Linear(Nitrate) t Chloride Linear(Chloride) Total Dissolved Solids(TDS) Total Coliform Bacteria 500 25 400 20 300 E 15 13)13 : G 200 a 10 - 100 5 0 O 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 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 —*—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 09/15/1987 28 9.2 3.5 9.2 <4 60 50 <0.1 <20 <20 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 Fe Hg Mn Mo Ni Pb Se Sb TI V Zn GW-05 09/15/1987 <30 48 <10 <1 <1 10 10/21/1987 <0.2 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 Site: GW-08 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2015 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 02/03/2015 13.2 7.01 47.7 0.044 < 0.050 < 0.020 < 0.050 6.26 5.90 05/13/2015 13.9 6.01 43.4 0.040 0.549 < 0.020 0.011 7.42 7.98 08/18/2015 18.4 5.91 44.3 0.057 0.530 < 0.020 < 0.080 7.48 8.01 11/04/2015 11.1 6.03 46.8 0.047 < 0.050 < 0.020 < 0.080 9.54 7.71 Maximum 18.4 7.01 47.7 0.057 0.549 < 0.020 < 0.080 9.54 8.01 Minimum 11.1 5.91 43.4 0.040 < 0.050 < 0.020 0.011 6.26 5.90 Average 14.2 6.24 45.6 0.047 0.295 < 0.020 0.055 7.68 7.40 #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 2015 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 02/03/2015 170 285 35.4 19.4 < 1.0 < 1 05/13/2015 203 332 43.8 14.6 < 1.0 < 1 08/18/2015 198 302 39.9 19.2 < 1.0 < 1 11/04/2015 197 324 43.1 20.5 < 1.0 < 1 Maximum 203 332 43.8 20.5 < 1.0 < 1 Minimum 170 285 35.4 14.6 < 1 < 1 Average 192 311 40.6 18.4 < 1.0 < 1.0 #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: 2015 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 < 0.067 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 7.376 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 Maximum 14.9 7.06 59.0 121 36.70 0.113 0.652 0.033 0.091 9.036 9.171 Minimum 9.5 6.19 39.0 42 0.16 0.030 < 0.050 0.020 < 0.010 1.081 1.198 Average 12.4 6.51 49.9 70 2.98 0.055 0.135 0.024 0.033 4.899 5.015 #Tests 35 35 35 30 31 35 35 25 33 35 35 Site: GW-08 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA From 1981 To: 2015 Total Fecal/ Fecal TDS EC Chloride COD SO4 Color Coli E.coil 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 94 193 319 39.1 < 5 4 4.3 < 2.0 95 181 303 33.0 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 5 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 Maximum 242 389 54.0 13 19.09 13 14.5 6.8 90.0 Minimum 146 230 20.9 1 9.54 4 1.0 1.0 < 2.2 Average 194 306 37.4 5 13.41 5 4.3 1.7 20.7 #Tests 35 35 34 31 16 31 35 35 5 Site GW-08 Nitrate-Nitrogen Chlorides 10 _ 100 _ 9 : 90 : 8 80 : 7 : 70 : 6 : ' 60 : J J E 5 : E 50 E 4 : 40 3 : "/ 30 : -lir' 2 :op. ill 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 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 —.—Nitrate Linear(Nitrate) t Chloride Linear(Chloride) Total Dissolved Solids(TDS) Total Coliform Bacteria 500 25 400 20 300 E 15 J - J _ 0 o� - 0 EZ - ' 200 a 10 1 vt"P-__,........ 100 - 5 W � w 0 01 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 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 —*—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 09/15/1987 26 8.8 4.1 23 <4 60 <10 <0.1 <20 <20 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 Fe Hg Mn Mo Ni Pb Se Sb TI V Zn GW-08 09/15/1987 200 <0.2 10 1 <1 10 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 Site: GW-11 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2015 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 01/06/2015 9.9 6.97 70.7 0.041 < 0.050 < 0.020 < 0.010 0.491 0.500 04/01/2015 12.5 7.09 74.7 0.048 < 0.050 < 0.020 < 0.010 0.538 0.531 07/15/2015 19.1 6.83 69.7 0.051 < 0.050 < 0.020 < 0.010 0.496 0.493 10/01/2015 12.4 7.00 69.8 0.047 < 0.050 < 0.020 < 0.010 0.554 0.532 Maximum 19.1 7.09 74.7 0.051 < 0.050 < 0.020 < 0.010 0.554 0.532 Minimum 9.9 6.83 69.7 0.041 < 0.050 < 0.020 < 0.010 0.491 0.493 Average 13.5 6.97 71.2 0.047 < 0.050 < 0.020 < 0.010 0.520 0.514 #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 2015 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 01/06/2015 122 135 0.899 0.596 25.9 < 1 04/01/2015 121 153 1.060 0.849 < 1 < 1 07/15/2015 114 146 1.020 0.693 < 1 < 1 10/01/2015 115 154 1.060 0.749 < 1 < 1 Maximum 122 154 1.060 0.849 < 25.9 < 1 Minimum 114 135 0.899 0.596 1 < 1 Average 118 147 1.010 0.722 7.2 < 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: 2015 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 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 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 12.8 6.83 56.8 44 0.26 0.038 0.082 0.030 0.010 0.480 0.551 #Tests 35 35 35 30 30 35 35 25 33 35 35 Site: GW-11 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA From 1981 To: 2015 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 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 92 116 1.040 4 0.801 5 1.7 1.5 #Tests 35 35 33 31 16 30 35 35 0 Site GW-1 1 Nitrate-Nitrogen Chlorides 5 50 4 40 3 30 J J 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 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 �—Nitrate Linear(Nitrate) +Chloride Linear(Chloride) Total Dissolved Solids (TDS) Total Coliform Bacteria 500 25 400 _ 20 300 E 15 J _ m r ' 200 — a 10 2 100 5 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 0 81 82 83 84 85 86 87 88 89 90 911 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 —.--TDS Linear(TDS) — Total Coliforms Linear(Total Coliforms) Annual Metals Report GW-11 Diamond Valley School Ca Mg K Na Al As Ba Be Ag Cd Cr Cu GW-11 05/15/1986 11 2.8 1.2 2.5 <4 <100 <10 <1 <10 <20 05/27/1986 11.5 2.6 1.1 5.8 <2 <5 <20 09/15/1987 6.4 2.5 1.1 5.2 <4 30 10 <0.1 <20 <20 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 <10 <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 Fe Hg Mn Mo Ni Pb Se Sb TI V Zn GW-11 05/15/1986 50 <1 <10 <1 <5 20 05/27/1986 <2 09/15/1987 <30 18 <10 <1 <1 10 10/21/1987 <0.2 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 Fe Hg Mn Mo Ni Pb Se Sb TI V Zn GW-11 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 Site: GW-17 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA 2015 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 01/06/2015 14.6 6.92 81.8 < 0.010 0.079 0.029 < 0.010 < 0.010 0.079 04/01/2015 12.4 6.46 63.7 0.012 < 0.050 < 0.020 < 0.010 1.020 0.910 07/15/2015 13.8 6.33 58.2 0.028 < 0.050 < 0.020 < 0.010 0.868 0.803 10/01/2015 11.5 6.50 60.9 0.026 < 0.050 < 0.020 < 0.010 0.770 0.637 Maximum 14.6 6.92 81.8 0.028 0.079 0.029 < 0.010 1.020 0.910 Minimum 11.5 6.33 58.2 < 0.010 < 0.050 < 0.020 < 0.010 < 0.010 0.079 Average 13.1 6.55 66.2 0.019 0.057 0.022 < 0.010 0.667 0.607 #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 2015 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 01/06/2015 117 168 2.06 1.19 < 1 < 1 04/01/2015 112 146 2.30 2.60 < 1 < 1 07/15/2015 104 142 2.50 1.42 < 1 < 1 10/01/2015 108 144 2.13 1.62 < 1 < 1 Maximum 117 168 2.50 2.60 < 1 < 1 Minimum 104 142 2.06 1.19 < 1 < 1 Average 110 150 2.25 1.71 < 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: 2015 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 Maximum 13.6 6.55 66.5 0.023 0.064 0.038 < 0.010 0.667 0.607 Minimum 13.1 6.52 66.2 0.019 0.057 0.022 < 0.010 0.417 0.445 Average 13.4 6.54 66.3 0.021 0.060 0.030 < 0.010 0.542 0.526 #Tests 2 2 2 0 0 2 2 2 2 2 2 Site: GW-17 SOUTH TAHOE PUBLIC UTILITY DISTRICT ALPINE COUNTY GROUNDWATER QUALITY DATA From 2014 To: 2015 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 Maximum 111 150 3.55 1.74 < 1.1 < 1.1 Minimum 110 147 2.25 1.71 < 1.0 < 1.0 Average 111 149 2.90 1.72 < 1.0 < 1.1 #Tests 2 2 2 0 2 0 2 2 0 Site GW-17 Nitrate-Nitrogen Chlorides 5 50 4 40 3 30 J ' E 2 20 1 10 0 0 14 15 14 15 —4—Nitrate Linear(Nitrate) -0—Chloride Linear(Chloride) Total Dissolved Solids (TDS) Total Coliform Bacteria 500 - 25 400 20 300 E 15 J I p E 200 a 10 100 • • 5 • • : 0 0 14 15 14 15 —+—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 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 ALPINE COUNTY SURFACEWATERS Site: SW-01 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Carson R Woodfords ALPINE COUNTY SURFACEWATER QUALITY DATA 2015 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 01/06/15 0.0 6.03 36.9 1.20 1.54 71 78 1.38 0.031 < 0.010 1.28 02/03/15 2.9 7.30 35.9 1.50 1.00 47 80 1.27 0.017 < 0.010 1.36 03/03/15 0.2 7.52 31.3 0.88 0.80 50 71 1.54 0.013 0.011 < 0.010 1.04 04/08/15 1.0 5.81 28.8 1.30 1.15 56 64 1.06 0.014 < 0.010 0.017 0.92 05/05/15 7.1 7.07 24.6 1.50 2.97 42 54 0.69 0.015 < 0.010 < 0.010 < 1.00 06/03/15 11.8 7.06 28.9 1.40 2.74 50 61 0.78 0.012 < 0.010 < 0.010 1.08 07/02/15 16.0 7.16 34.9 2.00 5.52 57 78 0.88 0.025 < 0.010 < 0.010 1.35 08/11/15 11.5 6.75 40.6 0.68 1.65 69 86 1.22 0.015 0.013 < 0.010 1.43 09/02/15 11.6 7.05 40.8 0.36 0.97 70 88 1.16 0.014 0.011 < 0.010 1.82 10/06/15 11.0 7.06 42.4 0.73 1.22 71 89 1.48 0.014 < 0.010 < 0.010 1.84 11/03/15 3.1 6.89 35.0 2.50 7.35 53 78 1.42 0.023 0.011 < 0.010 1.60 12/03/15 1.4 5.64 36.1 0.53 1.24 60 82 1.31 0.010 < 0.010 < 0.010 1.31 • Maximum 16.0 7.52 42.4 2.50 7.35 71 89 1.54 0.031 0.013 0.017 1.84 Minimum 0.0 5.64 24.6 0.36 0.80 42 54 0.69 0.010 < 0.010 < 0.010 < 0.92 Average 6.5 6.78 34.7 1.22 2.35 58 76 1.18 0.017 0.011 0.011 1.34 #Tests 12 12 12 12 12 12 12 12 12 12 10 12 Site: SW-01 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Carson R Woodfords ALPINE COUNTY SURFACEWATER QUALITY DATA 2015 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 ok 01/06/15 0.120 < 0.020 < 0.010 < 0.010 0.120 8.61 2.02 4.65 0.370 24.30 02/03/15 0.120 < 0.020 < 0.010 < 0.010 0.120 8.58 1.98 4.60 0.370 24.20 03/03/15 0.125 < 0.020 < 0.010 < 0.010 0.125 7.97 1.79 3.71 0.310 22.00 04/08/15 0.114 < 0.020 < 0.010 < 0.010 0.114 6.46 1.60 3.35 0.310 23.40 05/05/15 0.123 < 0.020 < 0.010 < 0.010 0.123 6.28 1.60 2.76 0.250 20.30 06/03/15 0.164 < 0.020 < 0.010 < 0.010 0.164 7.25 1.91 3.08 0.260 19.70 07/02/15 0.185 < 0.020 < 0.010 < 0.010 0.185 9.26 2.23 3.29 0.250 17.40 08/11/15 < 0.050 < 0.020 < 0.010 0.039 0.083 8.62 2.34 4.34 0.340 22.30 09/02/15 0.128 0.041 < 0.010 < 0.010 0.128 9.63 2.57 4.76 0.350 21.90 10/06/15 0.070 < 0.020 < 0.010 < 0.010 0.070 9.64 2.48 4.68 0.350 21.70 11/03/15 0.149 < 0.020 < 0.010 < 0.010 0.149 8.91 2.28 4.02 0.310 20.60 12/03/15 < 0.050 < 0.020 < 0.010 0.022 0.059 8.09 2.11 4.25 0.340 23.20 Maximum 0.185 0.041 < 0.010 0.039 0.185 9.64 2.57 4.76 0.370 24.30 Minimum < 0.050 < 0.020 < 0.010 < 0.010 0.059 6.28 1.60 2.76 0.250 17.40 Average 0.117 0.022 < 0.010 0.013 0.120 8.28 2.08 3.96 0.318 21.75 #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 2015 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 01/06/15 140 < 1 11.57 2.63 02/03/15 145 < 1 10.80 2.65 03/03/15 131 2 13.10 2.70 04/08/15 108 1 1.97 05/05/15 308 2 9.75 1.46 06/03/15 727 3 9.13 1.50 07/02/15 1,553 15 7.72 3.04 08/11/15 1,120 28 6.45 1.89 09/02/15 816 7 9.52 2.19 10/06/15 261 < 1 9.05 2.03 11/03/15 1,565 23 11.70 2.25 12/03/15 186 2 16.00 2.34 Maximum 1,565 28 0 0 0 0 0 0 0 16.00 3.04 Minimum 108 < 1 0 0 0 0 0 0 0 6.45 1.46 Average 588 7 10.44 2.22 #Tests 12 12 0 0 0 0 0 0 0 0 11 12 0 Site: SW-01 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Carson R Woodfords ALPINE COUNTY SURFACEWATER QUALITY DATA From 1981 To: 2015 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 6.3 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 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 7.40 31 1.70 4.6 53 67 1.2 0.02 0.01 0.03 1.28 #Tests 35 35 35 35 35 35 35 34 35 26 35 35 Site: SW-01 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Carson R Woodfords ALPINE COUNTY SURFACEWATER QUALITY DATA From: 1981 To: 2015 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 0.03 < 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 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 1.88 3.45 0.29 21.6 #Tests 35 35 33 33 35 31 34 18 32 32 32 32 32 Site: SW-01 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Carson R Woodfords ALPINE COUNTY SURFACEWATER QUALITY DATA From: 1981 To: 2015 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 50 731 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 Maximum 588 226 285 293 427 286 1,015 1,085 2,220 27,077 11.71 9.57 27 Minimum 23 4 3 0 0 0 0 0 0 0 8.94 < 0.01 19 Average 172 38 59 10 21 22 150 66 119 808 10.02 2.75 24 #Tests 35 35 34 34 34 34 34 34 34 34 33 33 14 Site: SW-01 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 1 0.1 f 0.00 0 0 0 .0 0 4, 0 0^ 0 cg' O\ e., y 0.0 �. QP 0h .1;\ 0a �. 9� ch ci‘ 0 0 0 05 0� oa �� 5 —•—Nitrate Linear(Nitrate) Total Phosphorus Linear(Total Phosphorus) Chlorides Total Dissolved Solids 10 _ 250 - 9 8 _1 I 200 7 6 : 150 E- 5 E 4 : 100 3 : 2 : 50 1 - - 0 8182838485868788899091929394959697989900010203040506070809101112131415 0 0 0 0 0 0 0 .0 Oh 01 0 0 0 O' O1 00' —*--Chlorides Linear(Chlorides) —.—TDS Linear(TDS) Site: SW-02 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Indian Creek,Upper ALPINE COUNTY SURFACEWATER QUALITY DATA 2015 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 03/03/15 2.9 7.33 37.9 4.80 0.69 81 77.9 1.07 0.021 0.012 < 0.010 1.13 04/08/15 5.1 6.93 40.4 3.30 88 84.3 1.06 0.027 0.011 0.018 1.42 05/05/15 9.7 6.55 45.4 1.50 0.19 83 99 0.710 0.015 0.013 < 0.010 1.78 06/03/15 Dry - 07/02/15 Dry 08/11/15 Dry 09/02/15 Dry 10/06/15 Dry 11/03/18 Dry Maximum 9.7 7.33 45.4 4.80 0.69 88 99 1.070 0.027 0.013 0.018 1.78 Minimum 2.9 6.55 37.9 1.50 0.19 81 77.9 0.710 < 0.015 < 0.011 < 0.010 1.13 Average 5.9 6.94 41.2 3.20 0.44 84 87 0.947 0.021 0.012 0.013 1.44 #Tests 3 3 3 3 2 3 3 3 3 3 3 3 Site: SW-02 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Indian Creek,Upper ALPINE COUNTY SURFACEWATER QUALITY DATA 2015 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 % 03/03/15 0.216 < 0.020 < 0.010 < 0.010 0.216 6.44 1.50 8.77 0.810 44.60 04/08/15 0.277 < 0.020 < 0.010 0.010 0.287 6.17 1.66 9.04 0.830 45.00 05/05/15 0.161 < 0.020 < 0.010 < 0.010 0.161 8.30 2.17 9.90 0.790 40.30 06/03/15 07/02/15 08/11/15 09/02/15 10/06/15 11/03/18 Maximum 0.277 < 0.020 < 0.010 0.010 0.287 8.30 2.17 9.90 0.830 45.00 Minimum < 0.161 < 0.020 < 0.010 < 0.010 0.161 6.17 1.50 8.77 0.790 40.30 Average 0.218 < 0.020 < 0.010 0.010 0.221 6.97 1.78 9.24 0.810 43.30 #Tests 3 3 3 3 3 0 0 0 3 3 3 3 3 Site: SW-02 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Indian Creek,Upper ALPINE COUNTY SURFACEWATER QUALITY DATA 2015 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 03/03/15 201 < 1 8.93 1.47 04/08/15 387 1 1.88 05/05/15 488 6 5.45 0.84 06/03/15 07/02/15 08/11/15 09/02/15 10/06/15 11/03/18 Maximum 488 6 0 0 0 0 0 0 0 8.93 1.88 Minimum 201 < 1 0 0 0 0 0 0 0 5.45 0.84 Average 359 3 7.19 1.40 #Tests 3 3 0 0 0 0 0 0 0 0 2 3 0 Site: SW-02 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Indian Creek,Upper ALPINE COUNTY SURFACEWATER QUALITY DATA From 1981 To: 2015 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 13.8 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 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 8.0 7.35 47 2.76 2.3 80 95 1.3 0.03 0.01 0.02 1.53 #Tests 32 32 32 32 32 32 32 32 32 25 32 32 Site: SW-02 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Indian Creek,Upper ALPINE COUNTY SURFACEWATER QUALITY DATA From: 1981 To: 2015 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 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 0.17 < 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 9.16 2.29 7.06 0.55 31.4 #Tests 32 32 31 31 32 28 31 15 30 30 30 30 30 Site: SW-02 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Indian Creek,Upper ALPINE COUNTY SURFACEWATER QUALITY DATA From: 1981 To: 2015 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 3,820 283 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 7.97 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 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 779 176 180 5 7 12 133 14 15 15 8.12 2.04 36 #Tests 32 32 31 31 31 31 31 31 31 31 31 31 11 Site: SW-02 Nitrate-Nitrogen Total Phosphorus a5 0.5 0.4 0.4 0.3 0.3 J - -J £ co 0.2 - £ 0.2 ' 0.1 0.1 0.0 ' 0.0 0� 6h 01 00 0 00 00 01 00 O^ 4' Oh 01 Oo' 4' 4? 40 O^ 0'' O' 01 00 0 0 Oh 01 00 01 0 0 01 00 ,, ,'y ♦h -�—Nitrate Linear(Nitrate) t Total Phosphorus Linear(Total Phosphorus) Chlorides Total Dissolved Solids 10 - 250 9 - - 8 200 7 = 6 150 J J E 5 4 100 3 2 = 50 —Amok_AL JIL 0 O 81 82 83 84 85 86 87 88 89 90 91 92 93 94 9596 97 98 99 00 01 02 03 04 05 06 07 08 09 1011 12 13 14 15 0 0� Oh 01 0,' 0^ O5`' Oh 01 oi' 41 Oma' 04" 01 Oma' �1 �� ♦y —0----Chlorides —Linear(Chlorides) —+—TDS —Linear(TDS) Site: SW-03 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Indian Creek,Mid ALPINE COUNTY SURFACEWATER QUALITY DATA 2015 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 03/03/15 0.8 7.56 35.5 2.30 2.15 53 69.5 1.44 0.022 0.012 < 0.010 1.06 04/08/15 6.7 7.18 73.7 3.20 1.23 115 152 2.34 0.070 0.021 0.041 1.57 05/05/15 12.0 7.38 85.5 3.90 2.41 133 183 2.70 0.063 0.030 0.017 1.78 06/03/15 20.1 7.20 81.2 6.80 23.80 122 164 2.55 0.115 0.038 0.015 1.80 07/02/15 17.6 7.35 90.6 3.50 9.12 134 187 2.81 0.167 0.088 0.019 1.93 08/11/15 13.7 7.11 100.0 2.60 7.32 143 198 3.06 0.075 0.031 0.018 1.65 09/02/15 14.8 6.98 105.0 7.00 59.90 151 207 3.36 0.166 0.037 0.020 2.37 10/06/15 15.0 7.20 102.0 2.60 3.96 153 202 3.37 0.091 0.040 0.025 2.04 11/03/15 4.8 7.02 35.0 4.80 4.55 64 81 1.64 0.043 0.022 0.010 1.93 Maximum 20.1 7.56 105.0 7.00 59.90 153 207 3.37 0.167 0.088 0.041 2.37 Minimum 0.8 6.98 35.0 2.30 1.23 53 69.5 1.44 0.022 < 0.012 < 0.010 1.06 Average 11.7 7.22 78.7 4.08 12.72 119 160 2.59 0.090 0.035 0.019 1.79 #Tests 9 9 9 9 9 9 9 9 9 9 9 9 Site: SW-03 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Indian Creek,Mid ALPINE COUNTY SURFACEWATER QUALITY DATA 2015 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 yo 03/03/15 0.133 < 0.020 < 0.010 < 0.010 0.133 7.62 1.69 3.80 0.320 23.20 04/08/15 0.091 < 0.020 < 0.010 0.010 0.101 15.10 4.46 8.87 0.520 24.90 05/05/15 0.139 < 0.020 < 0.010 0.010 0.149 17.50 5.78 9.74 0.520 23.30 06/03/15 0.225 0.026 < 0.010 0.016 0.241 17.40 5.57 9.36 0.500 22.90 07/02/15 0.912 0.259 < 0.010 0.034 0.946 18.50 6.01 10.20 0.530 23.20 08/11/15 0.127 0.022 < 0.010 0.017 0.144 21.40 6.90 11.90 0.570 23.60 09/02/15 0.315 0.056 < 0.010 0.015 0.330 21.60 7.81 13.10 0.610 24.20 10/06/15 0.170 < 0.020 < 0.010 0.022 0.192 21.00 7.10 12.60 0.610 24.50 11/03/15 0.178 < 0.020 < 0.010 < 0.010 0.178 8.73 2.37 4.63 0.360 22.80 Maximum 0.912 0.259 < 0.010 0.034 0.946 21.60 7.81 13.10 0.610 24.90 Minimum 0.091 < 0.020 < 0.010 < 0.010 0.101 7.62 1.69 3.80 0.320 22.80 Average 0.254 0.051 < 0.010 0.016 0.268 16.54 5.30 9.36 0.504 23.62 #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 2015 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 # urn #cells mg/L mg/L mg/L 03/03/15 96 2 12.50 2.46 04/08/15 126 77 2.92 05/05/15 921 228 6.89 3.10 06/03/15 > 2,419 727 8.00 2.58 07/02/15 > 2,419 > 2,419 8.15 2.32 08/11/15 1,733 201 7.59 2.10 09/02/15 1,553 112 7.23 2.02 10/06/15 1,850 2 8.74 2.30 11/03/15 2,851 107 10.90 3.76 Maximum 2,851 > 2,419 0 0 0 0 0 0 0 12.50 3.76 Minimum 96 2 0 0 0 0 0 0 0 6.89 2.02 Average 1,552 431 8.75 2.62 #Tests 9 9 0 0 0 0 0 0 0 0 8 9 0 Site: SW-03 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Indian Creek,Mid ALPINE COUNTY SURFACEWATER QUALITY DATA From 1981 To: 2015 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 9.7 7.43 67 3.70 3 229 390 3.6 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 7.77 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 0.04 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 7.51 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 Maximum 11.7 8.41 104 16.71 20.2 229 390 25.3 0.14 0.11 0.08 3.20 Minimum 5.5 7.01 38 2.95 2.0 68 75 1.1 0.06 0.01 0.01 1.45 Average 9.9 7.38 73 6.53 6.5 125 175 6.4 0.10 0.03 0.03 2.07 #Tests 35 35 35 35 35 35 35 34 35 26 35 35 Site: SW-03 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Indian Creek,Mid ALPINE COUNTY SURFACEWATER QUALITY DATA From: 1981 To: 2015 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 0.34 0.04 1.07 7 1 1 82 0.45 0.02 0.61 15 1 1 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 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 0.36 9 1.4 1 15.40 4.66 11.28 0.62 27.7 #Tests 35 35 33 33 35 31 34 18 32 32 32 32 32 Site: SW-03 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Indian Creek,Mid ALPINE COUNTY SURFACEWATER QUALITY DATA From: 1981 To: 2015 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 # urn #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 Maximum 12,215 12,215 3,223 1,766 15,701 61 415 166 470 6,490 9.56 14.38 110 Minimum 95 40 4 0 0 0 0 0 0 0 7.05 1.25 27 Average 2,082 1,287 397 56 489 3 24 12 28 355 8.27 4.63 60 #Tests 35 35 34 34 34 34 34 34 34 34 33 33 15 Site: SW-03 Nitrate-Nitrogen Total Phosphorus 0.5 0.5 0.4 i 0.4 0.3 0.3 J _ J E £ 0.2 0.2 i ••,.,,. 0.0 0.0 0^ ' 00 01 00 0^ 00 00 01 o O^ 00 O0 61 09 '`^ '` ^0 ,b^ 0'3 00 01 00 0^ 00 O' 4 00 O^ 4' O5 c 00 ^^ ^0 ^0 —4—Nitrate Linear(Nitrate) +Total Phosphorus Linear(Total Phosphorus) Chlorides Total Dissolved Solids 50 500 40 400 30 300 E Ai ..20 200 10 S'iyAi rill► VAMP' �� ��� — __ 100 +r ' — 0 • 0? 00 01 00 0^ OA 00 01 Oma' O^ 60 O's 61 Oma' ^^ ^ 4 0 0 -- --rT _1 0 0^ 00 00 01 00 0^ 05 00 01 00 O^ 00 O0 01 00 ^^ ,,, ^0 — Chlorides Linear(Chlorides) —4—TDS Linear(TDS) Site: SW-04 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Indian Creek,Lower ALPINE COUNTY SURFACEWATER QUALITY DATA 2015 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 03/03/15 1.1 7.59 34.5 3.50 4.87 58 76.2 1.50 0.025 0.013 < 0.010 1.13 04/08/15 11.1 7.90 61.5 1.90 1.00 99 125 2.01 0.035 0.019 0.042 1.20 05/05/15 13.7 8.09 67.9 2.30 1.83 102 139 1.84 0.050 0.023 0.011 1.25 06/03/15 23.1 7.78 72.9 3.50 3.73 110 146 2.33 0.050 0.032 0.011 1.55 07/02/15 22.0 8.08 79.7 3.90 3.98 117 167 3.30 0.073 0.032 0.010 2.23 08/11/15 15.7 7.31 91.5 3.50 3.98 129 200 3.84 0.049 0.026 0.018 2.27 09/02/15 17.3 8.38 93.1 3.90 10.20 134 187 4.12 0.059 0.026 0.018 2.83 10/06/15 16.4 8.10 81.6 3.10 3.18 131 155 4.87 0.050 0.025 0.011 3.04 11/03/15 5.0 7.58 39.8 4.50 2.77 72 92.7 2.28 0.049 0.026 0.011 2.27 Maximum 23.1 8.38 93.1 4.50 10.20 134 200 4.87 0.073 0.032 0.042 3.04 Minimum 1.1 7.31 34.5 1.90 1.00 58 76.2 1.50 0.025 < 0.013 < 0.010 1.13 Average 13.9 7.87 69.2 3.34 3.95 106 143 2.90 0.049 0.025 0.016 1.97 #Tests 9 9 9 9 9 9 9 9 9 9 9 9 Site: SW-04 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Indian Creek,Lower ALPINE COUNTY SURFACEWATER QUALITY DATA 2015 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 % 03/03/15 0.147 < 0.020 < 0.010 < 0.010 0.147 8.16 1.91 4.29 0.350 23.90 04/08/15 0.138 < 0.020 < 0.010 < 0.010 0.138 12.30 3.90 7.67 0.490 25.70 05/05/15 0.154 < 0.020 < 0.010 < 0.010 0.154 14.30 4.62 7.37 0.430 22.20 06/03/15 0.188 < 0.020 < 0.010 < 0.010 0.188 15.10 4.90 8.05 0.460 22.60 07/02/15 0.251 0.024 < 0.010 0.014 0.265 15.60 5.06 8.31 0.470 22.40 08/11/15 0.147 < 0.020 < 0.010 < 0.010 0.147 18.30 6.62 10.80 0.550 23.60 09/02/15 0.199 < 0.020 < 0.010 < 0.010 0.199 19.30 7.30 11.70 0.580 23.70 10/06/15 0.114 < 0.020 < 0.010 < 0.010 0.114 17.60 6.48 11.20 0.580 24.60 11/03/15 0.205 < 0.020 < 0.010 < 0.010 0.205 9.13 2.77 5.72 0.430 25.10 Maximum 0.251 0.024 < 0.010 0.014 0.265 19.30 7.30 11.70 0.580 25.70 Minimum 0.114 < 0.020 < 0.010 < 0.010 < 0.114 8.16 1.91 4.29 0.350 22.20 Average 0.171 0.020 < 0.010 0.010 0.173 14.42 4.84 8.35 0.482 23.76 #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 2015 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 # urn #cells mg/L mg/L mg/L 03/03/15 160 6 12.50 2.50 04/08/15 173 1 2.14 05/05/15 770 6 7.10 1.72 06/03/15 > 2,419 5 8.55 1.71 07/02/15 > 2,419 727 9.50 1.66 08/11/15 2,419 579 7.86 1.71 09/02/15 1,414 46 9.89 1.80 10/06/15 1,733 20 10.60 2.35 11/03/15 4,884 53 10.20 3.73 Maximum > 4,884 727 0 0 0 0 0 0 0 12.50 3.73 Minimum 160 1 0 0 0 0 0 0 0 7.10 1.66 Average 1,821 160 9.53 2.15 #Tests 9 9 0 0 0 0 0 0 0 0 8 9 0 Site: SW-04 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Indian Creek,Lower ALPINE COUNTY SURFACEWATER QUALITY DATA From 1981 To: 2015 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 9 111 173 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 7.43 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 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 10.0 7.50 57 6.21 11.1 99 133 4.6 0.08 0.03 0.03 2.03 #Tests 35 35 35 35 35 35 35 34 35 26 35 35 Site: SW-04 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Indian Creek,Lower ALPINE COUNTY SURFACEWATER QUALITY DATA From: 1981 To: 2015 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 0.46 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 13.40 4.03 7.07 0.42 2272 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 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 12.35 3.69 7.22 0.45 23.6 #Tests 35 35 33 33 35 31 34 18 32 32 32 32 32 Site: SW-04 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Indian Creek,Lower ALPINE COUNTY SURFACEWATER QUALITY DATA From: 1981 To: 2015 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 # urn #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 Maximum 4,756 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 1,971 561 474 7 12 8 64 24 22 209 8.22 3.74 46 #Tests 35 35 34 34 34 34 34 34 34 34 33 33 15 Site: SW-04 Nitrate-Nitrogen Total Phosphorus 0.5 0.5 0.4 i 0.4 0.3 0.3 JJ - 13 EE - 0.2 0.2 0.1 _ A A ' 0.1 illipirow A _,A 0.0 - 0.0 0.` 0., Oq 01 00j 0•. 9', 9h 4, ,i O•. O', OO O1 o% ,.1 .," .:O O•. 09 43 01 O9 OS OP 0'3 0‘ 0+°' O, OA 05 O1 00' ,S N.3 ,•b —.—Nitrate Linear(Nitrate) —• –Total Phosphorus Linear(Total Phosphorus) Chlorides Total Dissolved Solids 50 500 40 - 400 30 - 300 J E 20 E 200 10 100 0p 9:730h i1 09 0, 4'343 �^ O0' O^ 0'5 Oh O1 O0' \, ^� 43 0 -10 0, 0' 0'3 01 09 9 O' 4' 4\ O' O^ O' O`' 4' O9 ,1 ^' ,`' --'--Chlorides Linear(Chlorides) —•—TDS Linear(TDS) Site: SW-05 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Carson River,Paynesville ALPINE COUNTY SURFACEWATER QUALITY DATA 2015 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 01/06/15 1.0 6.48 42.7 0.64 0.42 82 92.0 1.630 0.011 < 0.010 1.58 02/03/15 5.9 7.64 40.7 2.30 0.62 69 92.0 1.540 0.015 < 0.010 1.69 03/03/15 1.7 7.72 33.1 0.91 0.76 56 75.2 1.530 0.010 < 0.010 0.012 1.18 04/08/15 5.4 7.11 31.4 1.00 1.33 60 69.4 1.220 0.013 < 0.010 0.017 1.12 05/05/15 10.0 7.30 27.6 1.60 3.85 52 59.0 0.841 0.021 < 0.010 < 0.010 < 1.00 06/03/15 14.1 7.03 30.9 1.40 3.27 56 67.1 1.130 0.012 < 0.010 < 0.010 1.10 07/02/15 18.1 7.57 37.8 2.50 5.44 65 84.0 1.110 0.029 0.010 < 0.010 1.58 08/11/15 14.8 7.52 44.6 2.80 3.94 71 96.0 1.440 0.023 < 0.010 < 0.010 1.65 09/02/15 16.6 7.68 46.0 1.70 2.35 81 99.1 1.490 0.027 0.013 < 0.010 2.24 10/06/15 10.2 7.45 44.6 2.00 2.90 79 95.8 1.640 0.022 < 0.010 < 0.010 2.03 11/03/15 4.3 7.70 38.8 3.20 5.25 64 87.5 1.900 0.030 0.011 < 0.010 2.16 12/03/15 3.2 6.95 43.3 0.62 0.90 75 100.0 1.650 < 0.010 0.010 0.014 1.73 Maximum 18.1 7.72 46.0 3.20 5.44 82 100.0 1.900 0.030 0.013 0.017 2.24 Minimum 1.0 6.48 27.6 0.62 0.42 52 59.0 0.841 0.010 < 0.010 < 0.010 < 1.00 Average 8.8 7.35 38.5 1.72 2.59 68 84.8 1.427 0.019 0.010 0.011 1.59 #Tests 12 12 12 12 12 12 12 12 12 12 10 12 Site: SW-05 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Carson River,Paynesville ALPINE COUNTY SURFACEWATER QUALITY DATA 2015 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 % 01/06/15 0.089 < 0.020 < 0.010 0.013 0.102 9.50 2.33 6.06 0.460 27.20 02/03/15 0.104 < 0.020 < 0.010 < 0.010 0.104 9.48 2.31 6.21 0.470 27.70 03/03/15 0.117 < 0.020 < 0.010 < 0.010 0.117 7.86 1.88 4.50 0.370 25.30 04/08/15 0.108 < 0.020 < 0.010 < 0.010 0.108 7.20 1.68 3.99 0.350 24.80 05/05/15 0.157 < 0.020 < 0.010 < 0.010 0.157 6.30 1.71 3.01 0.270 21.40 06/03/15 0.178 < 0.020 < 0.010 < 0.010 0.178 7.16 1.89 3.47 0.300 21.80 07/02/15 0.207 < 0.020 < 0.010 < 0.010 0.207 9.13 2.33 4.00 0.310 20.20 08/11/15 0.152 < 0.020 < 0.010 < 0.010 0.152 10.50 2.54 5.38 0.390 23.20 09/02/15 0.197 < 0.020 < 0.010 < 0.010 0.197 10.20 2.79 6.14 0.440 25.10 10/06/15 0.160 < 0.020 < 0.010 < 0.010 0.160 9.98 2.67 5.64 0.410 24.20 11/03/15 0.178 < 0.020 < 0.010 < 0.010 0.178 9.39 2.50 5.08 0.380 23.20 12/03/15 0.066 < 0.020 < 0.010 < 0.010 0.066 9.46 2.58 5.71 0.420 25.40 Maximum 0.207 < 0.020 < 0.010 0.013 0.207 10.50 2.79 6.21 0.470 27.70 Minimum 0.066 < 0.020 < 0.010 < 0.010 0.066 < 6.30 1.68 3.01 0.270 20.20 Average 0.143 < 0.020 < 0.010 0.010 0.144 8.85 2.27 4.93 0.381 24.13 #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 2015 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 01/06/15 126 6 12.03 3.50 02/03/15 166 10 10.80 3.36 03/03/15 138 < 1 12.40 2.92 04/08/15 122 < 1 2.35 05/05/15 687 6 9.11 1.66 06/03/15 921 16 8.42 1.83 07/02/15 2,419 109 9.87 2.83 08/11/15 3,050 770 7.92 2.36 09/02/15 1,733 35 8.94 2.86 10/06/15 740 81 9.68 2.48 11/03/15 2,489 64 10.20 3.08 12/03/15 448 150 15.70 3.72 Maximum 3,050 770 0 0 0 0 0 0 0 15.70 3.72 Minimum 122 < 1 0 0 0 0 0 0 0 7.92 1.66 Average 1,087 104 10.46 2.75 #Tests 12 12 0 0 0 0 0 0 0 0 11 12 0 Site: SW-05 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Carson River,Paynseville ALPINE COUNTY SURFACEWATER QUALITY DATA From 1981 To: 2015 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 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 7.25 28 1.09 2.0 43 49 0.9 0.02 < 0.01 0.01 1.11 Average 8.2 7.60 35 2.25 6.5 60 76 1.6 0.03 0.01 0.02 1.54 #Tests 35 35 35 35 35 35 35 34 35 26 35 35 Site: SW-05 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Carson River,Paynseville ALPINE COUNTY SURFACEWATER QUALITY DATA From: 1981 To: 2015 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 0.24 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 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 0.19 0.03 0.01 0.04 0.23 8 1.0 1 7.78 2.13 4.33 0.35 23.3 #Tests 35 35 33 33 35 31 34 18 32 32 32 32 32 Site: SW-05 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Carson River,Paynseville ALPINE COUNTY SURFACEWATER QUALITY DATA From: 1981 To: 2015 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 # urn #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 0 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 0 0 0 0 10.50 4.33 26 94 1,390 672 90 0 0 3 70 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 0 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 Maximum 2,951 1,227 680 173 2,303 62 738 705 821 5,194 11.15 9.08 33 Minimum 72 29 4 0 0 0 0 0 0 0 8.65 1.44 21 Average 893 317 150 9 81 8 66 59 49 247 9.65 3.39 27 #Tests 35 35 34 34 34 34 34 34 34 34 33 33 14 Site: SW-05 Nitrate-Nitrogen Total Phosphorus 0.5 0.5 - 0.4 r. 0.4 0.3 0.3 J - J E - E 0.2 - 0.2 0.1 0.1 0.0 - 0.0 O1 0�' Oy O^ Oma' .; 0 Ot' 91 8i' O1 Oma' O' O1 Oma' '�, <O 4. 0^ 4. O. O1 OO 0^ O Oh 01 4 O 00 d' 01 Oma' �. � ,h t Nitrate Linear(Nitrate) t 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 1 :.\....,0,4_0.7\f-i"\,;\.„4_,„.4,_. -0=6-4 2 50 50 1 0 0 81 82 83 84 85 8687 88 8990 91 92 93 94 95 9697 98 9900 01 02 03 04 05 0607 08 09 10 11 12 13 14 15 0 0' 0 01 O§' C., 0' CP Al 9P' O^ CP O°' 01 Oma' ..' '•�' '•�' —�Chlorides Linear(Chlorides) —TDS Linear(TDS) Site: SW-06 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Carson River,Stateline ALPINE COUNTY SURFACEWATER QUALITY DATA 2015 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 01/06/15 -0.3 6.35 44.3 0.66 20.00 84 100.0 2.17 0.010 < 0.010 1.69 02/03/15 5.4 7.42 44.3 3.60 4.81 69 101.0 2.11 0.012 < 0.010 1.86 03/03/15 1.8 7.71 34.1 1.40 1.58 62 78.1 1.76 0.010 < 0.010 0.017 1.26 04/08/15 5.1 6.93 32.0 1.00 1.22 61 71.9 1.46 0.012 < 0.010 0.042 1.14 05/05/15 11.3 7.62 27.6 2.30 4.40 56 60.0 0.95 0.021 < 0.010 < 0.010 1.02 06/03/15 13.4 7.25 31.3 2.50 5.39 57 54.1 1.02 0.015 < 0.010 0.011 1.14 07/02/15 19.3 7.72 38.8 2.80 6.82 64 87.0 1.27 0.034 0.010 < 0.010 1.68 08/11/15 16.7 7.43 44.8 1.90 2.98 74 97.0 1.66 0.019 < 0.010 < 0.010 1.91 09/02/15 19.1 7.95 48.8 1.20 2.48 76 113.0 3.07 0.020 < 0.010 0.012 2.31 10/06/15 10.8 8.02 45.0 2.50 5.04 79 97.5 1.84 0.019 < 0.010 < 0.010 2.03 11/03/15 4.7 7.51 36.8 4.00 6.85 66 83.1 1.96 0.030 < 0.010 < 0.010 2.19 12/03/15 2.0 6.46 46.3 0.83 0.63 80 119.0 3.25 < 0.010 < 0.010 0.032 1.72 Maximum 19.3 8.02 48.8 4.00 20.00 84 119.0 3.25 0.034 < 0.010 0.042 2.31 Minimum -0.3 6.35 27.6 0.66 0.63 56 54.1 0.95 < 0.010 < 0.010 < 0.010 1.02 Average 9.1 7.36 39.5 2.06 5.18 69 88.5 1.88 0.018 < 0.010 0.016 1.66 #Tests 12 12 12 12 12 12 12 12 12 12 10 12 Site: SW-06 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Carson River,Stateline ALPINE COUNTY SURFACEWATER QUALITY DATA 2015 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 % 01/06/15 0.110 < 0.020 < 0.010 0.073 0.183 10.10 2.60 6.42 0.470 26.80 02/03/15 0.108 < 0.020 < 0.010 0.055 0.163 9.95 2.56 6.57 0.480 27.50 03/03/15 0.121 < 0.020 < 0.010 0.013 0.134 8.15 2.00 4.56 0.370 24.70 04/08/15 0.109 < 0.020 < 0.010 0.016 0.125 7.17 1.70 4.15 0.360 25.50 05/05/15 0.176 < 0.020 < 0.010 < 0.010 0.176 6.64 1.82 3.22 0.290 21.60 06/03/15 0.189 < 0.020 < 0.010 < 0.010 0.189 7.26 1.94 3.47 0.300 21.50 07/02/15 0.258 < 0.020 < 0.010 < 0.010 0.258 9.11 2.40 4.18 0.320 20.70 08/11/15 0.146 < 0.020 < 0.010 0.019 0.165 10.30 2.72 5.70 0.410 24.00 09/02/15 0.193 < 0.020 < 0.010 0.064 0.257 11.30 3.33 6.61 0.440 24.30 10/06/15 0.152 < 0.020 < 0.010 0.020 0.172 10.50 2.87 6.00 0.420 24.30 11/03/15 0.206 < 0.020 < 0.010 < 0.010 0.206 8.74 2.40 5.09 0.390 24.30 12/03/15 0.057 < 0.020 < 0.010 0.164 0.221 10.60 3.14 6.13 0.420 24.30 Maximum 0.258 0.020 < 0.010 0.164 0.258 11.30 3.33 6.61 0.480 27.50 Minimum 0.057 < 0.020 < 0.010 < 0.010 0.125 6.64 1.70 3.22 0.290 20.70 Average 0.152 0.020 < 0.010 0.039 0.187 9.15 2.46 5.18 0.389 24.13 #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 2015 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 # urn #cells mg/L mg/L mg/L 01/06/15 131 12 12.14 3.92 02/03/15 160 6 11.20 3.76 03/03/15 138 10 13.00 3.00 04/08/15 260 6 2.45 05/05/15 649 15 9.52 1.71 06/03/15 > 2,419 57 9.00 1.74 07/02/15 > 2,419 214 7.45 2.78 08/11/15 9,870 105 7.79 2.54 09/02/15 1,553 47 9.94 3.76 10/06/15 1,733 99 9.70 2.68 11/03/15 2,909 162 10.80 2.98 12/03/15 161 6 16.00 4.75 Maximum 9,870 214 0 0 0 0 0 0 0 16.00 4.75 Minimum 131 < 6 0 0 0 0 0 0 0 7.45 1.71 Average 1,867 61 10.59 3.01 #Tests 12 12 0 0 0 0 0 0 0 0 11 12 0 Site: SW-06 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Carson River,Stateline ALPINE COUNTY SURFACEWATER QUALITY DATA From 1981 To: 2015 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 Maximum 12.4 7.94 48 4.30 11.7 90 125 6.1 0.05 0.02 0.30 2.19 Minimum 7.2 7.11 30 0.91 2.2 54 49 1.1 0.02 < 0.01 0.01 1.27 Average 9.8 7.59 38 2.20 5.9 66 86 2.5 0.03 0.01 0.02 1.67 #Tests 34 34 34 34 34 34 34 34 34 26 34 34 Site: SW-06 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Carson River,Stateline ALPINE COUNTY SURFACEWATER QUALITY DATA From: 1981 To: 2015 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 0.22 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 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 8.50 2.52 4.55 0.35 22.5 #Tests 34 34 33 33 34 30 33 17 32 32 32 32 32 Site: SW-06 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Carson River,Stateline ALPINE COUNTY SURFACEWATER QUALITY DATA From: 1981 To: 2015 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 # urn #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 10.69 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 02 509 135 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 2,391 193 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 Maximum 4,216 1,724 843 53 403 46 577 783 312 11,149 10.78 9.08 46 Minimum 167 53 12 0 0 0 0 0 0 0 8.43 0.69 25 Average 1,290 369 160 3 12 4 42 55 17 529 9.29 3.52 32 #Tests 34 34 33 33 33 33 33 33 33 33 33 33 14 Site: SW-06 Nitrate-Nitrogen Total Phosphorus 0.5 0.5 0.4 I 0.4 0.3 0.3 J J L71 _ OI E E 0.2 0.2 0.1 I 0.1 0.0 0.0 0,^ 00 00 01 o 01 00 00 01 9P' O, 00 00 01 OP' N, �' ♦ 0 00 Oh 01 0 Oy 01 00 O, O' Oh 01 09 ♦' .' .0 �—Nitrate Linear(Nitrate) t Total Phosphorus Linear(Total Phosphorus) Chlorides Total Dissolved Solids 10 -_ 250 9 8 : 200 7 6 : 150 J E 5 - E - 4 . 100 3 -_2 _ v 501 0 81 82 83 84 85 86 87 88 8990 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 0 0` 0?' 0`5 9s 00 9`' 01 Oma' O^ OO O°' 01 OA �, t Chlorides Linear(Chlorides) —TDS Linear(TDS) Site: SW-07 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Fredricksburg Ditch,Upper ALPINE COUNTY SURFACEWATER QUALITY DATA 2015 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 03/03/15 Dry 04/08/15 Dry 05/05/15 Dry 06/03/15 12.6 7.24 83.8 2.80 4.40 172 260 23.3 0.065 0.030 0.047 3.77 07/02/15 Dry 08/11/15 14.7 7.23 128.0 2.80 1.80 167 288 23.6 0.116 0.069 0.054 4.08 09/02/15 Dry 10/06/15 Dry 11/03/15 Dry Maximum 14.7 7.24 128.0 2.80 4.40 172 288 23.6 0.116 0.069 0.054 4.08 Minimum 12.6 7.23 83.8 2.80 1.80 167 260 23.3 0.065 0.030 0.047 3.77 Average 13.7 7.24 105.9 2.80 3.10 170 274 23.5 0.091 0.050 0.051 3.93 #Tests 2 2 2 2 2 2 2 2 2 2 2 2 Site: SW-07 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Fredricksburg Ditch,Upper ALPINE COUNTY SURFACEWATER QUALITY DATA 2015 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 % 03/03/15 04/08/15 05/05/15 06/03/15 0.440 < 0.020 < 0.010 1.160 1.600 20.4 5.38 22.5 1.140 38.60 07/02/15 08/11/15 0.358 0.028 < 0.020 1.400 1.760 21.3 5.54 25.0 1.250 40.10 09/02/15 10/06/15 11/03/15 Maximum 0.440 0.028 < 0.020 1.400 1.760 21.3 5.54 25.0 1.250 40.10 Minimum 0.358 < 0.020 < 0.010 1.160 1.600 20.4 5.38 22.5 1.140 38.60 Average 0.399 0.024 < 0.015 1.280 1.680 20.9 5.46 23.8 1.195 39.35 #Tests 2 2 2 2 2 0 0 0 2 2 2 2 2 Site: SW-07 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Fredricksburg Ditch,Upper ALPINE COUNTY SURFACEWATER QUALITY DATA 2015 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 03/03/15 04/08/15 05/05/15 06/03/15 > 2,419 517 9.16 10.50 07/02/15 08/11/15 3,090 117 6.46 10.60 09/02/15 10/06/15 11/03/15 Maximum 3,090 517 0 0 0 0 0 0 0 9.16 10.60 Minimum 2,419 117 0 0 0 0 0 0 0 6.46 10.50 Average 2,755 317 7.81 10.55 #Tests 2 2 0 0 0 0 0 0 0 0 2 2 0 Site: SW-07 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Fredricksburg Ditch,Upper ALPINE COUNTY SURFACEWATER QUALITY DATA From 1981 To: 2015 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 17.0 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 48 12.75 26.0 133 183 13.6 0.08 0.06 0.03 5.03 05 14.7 6.87 65 7.28 8.7 149 184 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 7.38 75 82.48 75.3 147 211 14.9 0.37 0.03 0.03 5.54 11 12.4 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 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 5.9 0.05 0.02 < 0.01 3.04 Average 14.7 7.36 71 10.76 18.1 150 211 17.3 0.19 0.09 0.04 4.90 #Tests 35 35 35 35 35 35 35 34 35 26 35 35 Site: SW-07 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Fredricksburg Ditch,Upper ALPINE COUNTY SURFACEWATER QUALITY DATA From: 1981 To: 2015 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 13.77 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 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 0.92 0.15 0.02 0.40 1.32 20 2.4 1 18.15 4.84 14.86 0.80 30.4 #Tests 35 35 33 33 35 20 34 18 32 32 32 32 32 Site: SW-07 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Fredricksburg Ditch,Upper ALPINE COUNTY SURFACEWATER QUALITY DATA From: 1981 To: 2015 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 # urn #cells mg/L mg/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 Maximum > 24,000 17,500 8,498 126 930 104 1,122 277 920 1,708 10.90 25.01 122 Minimum 965 317 43 0 0 0 0 0 0 0 5.35 2.12 48 Average 7,920 4,777 1,463 6 33 7 104 14 31 83 8.06 9.64 70 #Tests 35 35 21 34 34 34 34 34 34 34 33 33 11 Site: SW-07 Nitrate-Nitrogen Total Phosphorus 1.0 _ 1.0 -. 0.9 1 0.9 : 0.8 : 0 0.8 : - 0.7 : 0.7 : - 0.6 : I 0.6 co 0.5 : � 0.5 0.4 : I if 0.4 : 0.3 : 0.3 _0.2 : ' Aw fir 0.2 : vIr _A Till VLILL 0.0 - 0.0 1 0, 4., 00 41/4 00 9^ ,i'' 4.> oil 00' O^ .6' cis 01 09 '.1 '.� ..5 0s 0b 4. 01 00' 0^ 0� 4' 01 00' O^ ci> Oy 01 Oo' ^' .b ,h --+—Nitrate Linear(Nitrate) —+—Total Phosphorus Linear(Total Phosphorus) Chlorides Total Dissolved Solids 100 _ 500 90 : 80 : 400 70 : 60 : 300 J J w 50 : co . E E 40 : 200 30 20 : 100 10 : V V V 0 -- 0 01 0's 00 01 0' 95^ 4b 4, 01 c' O^ O,' Of.' 01 00 '.1 '.'' '.5 0, 0`b 0y 0^ 00' 0^ 0? 05 4 4' 0, c;", Oh 4 Oo' '.^ .:', '.h — Chlorides Linear(Chlorides) —0—TDS Linear(TDS) Site: SW-08 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Irrigation Ditch ALPINE COUNTY SURFACEWATER QUALITY DATA • 2015 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 03/03/15 0.1 7.20 62.3 2.7 9.5 112 137 1.76 0.047 0.014 0.015 2.15 04/08/15 7.8 7.07 54.3 6.3 38.5 112 123 1.59 0.254 0.017 0.019 1.86 05/05/15 17.4 7.13 64.9 2.5 9.1 117 136 0.78 0.070 0.043 < 0.010 1.12 06/03/15 14.4 7.09 90.5 12.0 64.6 157 184 2.64 0.294 0.037 < 0.010 5.11 07/02/15 28.3 6.73 69.7 160.0 504.0 152 182 3.83 2.320 0.053 0.011 8.37 08/11/15 23.0 6.45 45.4 3.2 16.7 97 107 1.19 0.138 0.030 < 0.010 1.84 09/02/15 Dry 10/06/15 Dry 11/03/15 4.5 6.22 12.7 1.6 3.8 138 130 4.72 0.144 0.037 0.011 5.49 Maximum 28.3 7.20 90.5 160.0 504.0 157 184 4.72 2.320 0.053 0.019 8.37 Minimum 0.1 6.22 12.7 1.6 3.8 97 107 0.78 0.047 0.014 < 0.010 1.12 Average 13.6 6.84 57.1 26.9 92.3 126 143 2.36 0.467 0.033 0.012 3.71 #Tests 7 7 7 7 7 7 7 7 7 7 7 7 Site: SW-08 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Irrigation Ditch ALPINE COUNTY SURFACEWATER QUALITY DATA 2015 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 % 03/03/15 0.493 < 0.020 < 0.010 < 0.010 0.493 12.00 2.92 13.10 0.880 38.90 04/08/15 1.620 < 0.020 < 0.010 < 0.010 1.620 9.94 2.34 12.60 0.930 42.70 05/05/15 0.656 < 0.020 < 0.010 < 0.010 0.656 13.60 3.32 12.60 0.790 35.80 06/03/15 2.050 0.020 < 0.010 < 0.010 2.050 21.10 5.33 11.60 0.580 23.70 07/02/15 2.330 0.236 < 0.010 0.014 2.340 16.20 3.85 10.30 0.600 25.10 08/11/15 0.707 < 0.020 < 0.010 < 0.010 0.707 9.15 2.28 9.97 0.760 38.50 09/02/15 10/06/15 11/03/15 1.820 0.193 < 0.020 0.044 1.870 7.17 1.93 13.80 1.180 47.70 Maximum 2.330 0.236 < 0.020 0.044 2.340 21.10 5.33 13.80 1.180 47.70 Minimum 0.493 < 0.020 < 0.010 < 0.010 0.493 7.17 1.93 9.97 0.580 23.70 Average 1.382 0.076 < 0.011 0.015 1.391 12.74 3.14 12.00 0.817 36.06 #Tests 7 7 7 7 7 0 0 0 7 7 7 7 7 Site: SW-08 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Irrigation Ditch ALPINE COUNTY SURFACEWATER QUALITY DATA 2015 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 # urn #cells mg/L mg/L mg/L 03/03/15 816 7 10.60 6.37 04/08/15 > 2,419 2 5.10 05/05/15 > 2,419 10 5.85 3.92 06/03/15 > 2,419 313 3.96 2.96 07/02/15 > 2,419 > 2,419 0.91 2.48 08/11/15 2,419 65 2.88 6.24 09/02/15 10/06/15 11/03/15 > 24,192 32 8.97 32.30 Maximum > 24,192 > 2,419 0 0 0 0 0 0 0 10.60 32.30 Minimum 816 2 0 0 0 0 0 0 0 0.91 2.48 Average 5,301 407 5.53 8.48 #Tests 7 7 0 0 0 0 0 0 0 0 6 7 0 Site: SW-08 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Irrigation Ditch ALPINE COUNTY SURFACEWATER QUALITY DATA From 1981 To: 2015 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 2.16 83 13.8 7.72 56 3.62 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 2.48 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 Maximum 17.2 7.72 64 26.90 92.3 126 143 2.4 0.47 0.04 0.15 3.75 Minimum 11.4 6.84 46 1.80 4.7 85 104 1.1 0.04 0.01 0.01 1.98 Average 14.3 7.39 55 5.56 20.7 99 119 1.6 0.10 0.02 0.02 2.48 #Tests 35 35 35 35 35 35 35 33 35 26 35 35 Site: SW-08 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Irrigation Ditch ALPINE COUNTY SURFACEWATER QUALITY DATA From: 1981 To: 2015 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 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 10.91 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 Maximum 1.38 0.08 0.02 0.40 1.39 35 2.2 2 13.42 3.14 12.00 0.82 36.1 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 0.51 0.04 0.01 0.15 0.67 14 1.3 1 11.18 2.74 9.14 0.64 31.9 #Tests 35 35 33 33 35 31 34 18 32 32 32 32 32 Site: SW-08 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Irrigation Ditch ALPINE COUNTY SURFACEWATER QUALITY DATA From: 1981 To: 2015 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 2,809 374 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 Maximum 6,870 5,544 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 3,617 1,483 590 4 6 6 56 30 87 178 7.16 4.95 38 #Tests 35 35 34 34 34 34 34 34 34 34 33 33 14 Site: SW-08 Nitrate-Nitrogen Total Phosphorus 0.5 0.5 0.4 1 0.4 0.3Ilk 0.3 J J c E - E 0.2 0.2 - .1 • 0.1 - 0 � r- 41 - -ter_IF A V.. .w 0.0 - _ . 0.0 - 0.` 44 40 41 40 4' 40 00 4 00' O, O.' 00 01 8' ^s ^0 ..0 4° 40 44 01 00 0^ 05"' 04 01 00 O.. O,5 00 01 00' ..'. '40 ,.0 t Nitrate Linear(Nitrate) —.--Total Phosphorus Linear(Total Phosphorus) Chlorides Total Dissolved Solids 10 : 250 9 8 : 200 7 ; 6 : 150 - J J a1 5 0> . E E - 4 : 100 - -W"'" — -- mow_ - w 3 : 50 1 1 i 0 - 0 81 82 83 8485 8687 88 89 90 91 92 9394 95 96 97 98 9900 01 02 0364 0506070809101112131415 0, 00 4' 4' 40' 0^ 44 4' 41 4' 6' 4' 4' 01 00' NN '."' —4—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 2015 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 05/05/15 Dry 06/03/15 Dry 07/02/15 18.4 8.03 273 486 53.1 2.78 2.66 08/11/15 19.6 8.20 272 467 53.1 3.38 3.40 09/02/15 18.9 7.90 290 500 56.8 3.52 3.24 10/06/15 11.2 7.75 277 504 52.2 3.41 3.14 Maximum 19.6 8.20 290 504 56.8 3.52 3.40 Minimum 11.2 7.75 272 467 52.2 2.78 2.66 Average 17.0 7.97 278 489 53.8 3.27 3.11 #Tests 4 4 0 0 0 4 4 4 4 4 0 0 Site: SW-12 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Bruns Diversion ALPINE COUNTY SURFACEWATER QUALITY DATA 25"above Fredericksburg Ditch 2015 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 % 05/05/15 06/03/15 07/02/15 9.36 8.12 3.35 4.39 17.10 08/11/15 10.00 7.71 1.30 4.74 16.00 09/02/15 10.20 7.38 1.56 6.82 18.60 10/06/15 13.00 10.70 0.97 8.46 22.40 Maximum 13.00 10.70 3.35 8.46 22.40 Minimum 9.36 7.38 0.97 4.39 16.00 Average 10.64 8.48 1.79 6.10 18.53 #Tests 4 4 4 4 4 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 2015 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 05/05/15 06/03/15 07/02/15 8.40 19.5 08/11/15 6.72 17.4 09/02/15 7.53 18.4 10/06/15 8.76 17.1 Maximum 8.76 19.5 Minimum 6.72 17.1 Average 7.85 18.1 #Tests 0 0 0 0 0 0 0 0 0 0 4 4 0 Site: SW-12 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Bruns Diversion ALPINE COUNTY SURFACEWATER QUALITY DATA 25"above From 1981 Fredericksburg Ditch To: 2015 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 Maximum 20.6 8.45 296 524 62.2 3.40 3.20 Minimum 16.1 7.83 205 361 39.1 1.99 1.90 Average 17.9 8.16 252 464 52.6 2.87 2.63 #Tests 15 15 0 0 0 15 15 15 15 15 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: 2015 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 Maximum 16.92 14.24 1.97 6.10 19.93 Minimum 8.30 6.11 0.53 1.22 9.91 Average 12.85 10.81 1.02 2.91 16.34 #Tests 15 15 15 15 15 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: 2015 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 # urn #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 Maximum 0 0 0 0 0 0 0 8.27 18.72 Minimum 0 0 0 0 0 0 0 6.32 12.29 Average 7.18 15.53 #Tests 0 0 0 0 0 0 0 0 0 0 15 15 0 Site: SW-12 Nitrate-Nitrogen Total Phosphorus 5.0 10.0 _ 9.0 : 4.0 _ ' . 8.0 : 7.0 3.0 6.0 J J 5.0 2.0 SW4.0 : 3.0 : � w 1.0 1 2.0 : - 1.0 : 01 03 03 04 05 06 07 08 09 10 11 12 13 14 15 01 03 03 04 05 06 07 08 09 10 11 12 13 14 15 —*---Nitrate Linear(Nitrate) —4—Total Phosphorus Linear(Total Phosphorus) Chlorides Total Dissolved Solids 100 _ 500 90 : 80 : 400 70 60 : —,da 300 or 50 : NV la) £ £ 40 : 200 30 : 20 : 100 10 0 - . . . . 0 01 03 03 04 05 06 07 08 09 10 11 12 13 14 15 01 03 03 04 05 06 07 08 09 10 11 12 13 14 15 —4--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 2015 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 05/05/15 10.1 7.45 23 58.0 0.832 0.020 < 0.010 06/03/15 13.3 6.81 67 86.2 2.900 0.089 0.028 07/02/15 18.4 7.65 66 95 2.740 0.040 0.017 08/11/15 14.4 7.20 93 131 6.420 0.345 0.322 09/02/15 17.7 7.88 147 237 20.500 1.150 1.120 10/06/15 10.2 7.37 72 96 1.660 0.025 0.013 Maximum 18.4 7.88 147 237 20.500 1.150 1.120 Minimum 10.1 6.81 23 58 0.832 0.020 < 0.010 Average 14.0 7.39 78 117 5.842 0.278 0.252 #Tests 6 6 0 0 0 6 6 6 6 6 0 0 Site: SW-13 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Fredericksburg Ditch ALPINE COUNTY SURFACEWATER QUALITY DATA 100'below confluence with reclaimed water 2015 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 % 05/05/15 0.157 < 0.020 < 0.010 < 0.010 0.157 06/03/15 0.354 0.064 < 0.010 0.371 0.725 07/02/15 0.222 0.032 < 0.010 0.074 0.296 08/11/15 0.570 0.321 0.131 0.808 1.510 09/02/15 3.620 2.610 0.544 2.380 6.540 10/06/15 0.166 < 0.020 < 0.010 < 0.010 0.166 Maximum 3.620 2.610 0.544 2.380 6.540 Minimum < 0.157 < 0.020 < 0.010 < 0.010 0.157 Average 0.848 0.511 0.119 0.609 1.566 #Tests 6 6 6 6 6 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 2015 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 # urn #cells mg/L mg/L mg/L 05/05/15 9.15 1.66 06/03/15 8.44 2.51 07/02/15 9.38 3.25 08/11/15 8.63 3.88 09/02/15 8.43 8.02 10/06/15 9.53 2.49 Maximum 9.53 8.02 Minimum 8.43 1.66 Average 8.93 3.64 #Tests 0 0 0 0 0 0 0 0 0 0 6 6 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: 2015 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 Maximum 16.3 8.28 144 252 25.4 1.50 1.37 Minimum 10.3 7.16 73 91 4.5 0.20 0.17 Average 13.4 7.68 99 156 13.0 0.66 0.59 #Tests 15 15 0 0 0 15 15 15 15 15 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: 2015 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 0.20 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 0.64 0.09 0.61 1.57 11 2.89 1.97 0.61 1.24 4.74 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 Maximum 5.76 4.53 0.61 1.33 7.55 Minimum 0.61 0.23 0.09 0.20 1.30 Average 2.72 2.35 0.21 0.67 3.59 #Tests 15 15 15 15 15 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: 2015 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 # urn #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 Maximum 0 0 0 0 0 0 0 8.93 8.04 Minimum 0 0 0 0 0 0 0 6.94 2.68 Average 8.17 4.94 #Tests 0 0 0 0 0 0 0 0 0 0 15 15 0 Site: SW-13 Nitrate-Nitrogen Total Phosphorus 5.0 5.0 4.0 4.0 3.0 3.0 J CD m 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 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 �—Nitrate Linear(Nitrate) Total Phosphorus Linear(Total Phosphorus) Chlorides Total Dissolved Solids 50 500 40 1 400 30 - 300 J J O) E E 20 - — 200 r - 10 100 • �` 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 +Chlorides Linear(Chlorides) —+—TDS Linear(TDS) Site: SW-15 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Celio Tailwater ALPINE COUNTY SURFACEWATER QUALITY DATA @ Brooke Diversion 2015 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 05/05/15 13.1 7.70 258 398 13.3 0.744 0.296 06/03/15 07/02/15 23.1 7.12 277 601 53.8 2.630 2.450 08/11/15 21.4 7.28 286 378 53.6 3.100 3.240 09/02/15 15.5 7.72 373 528 60.2 1.550 1.360 10/06/15 13.5 7.55 285 486 50.2 3.070 2.870 Maximum 23.1 7.72 373 601 60.2 3.100 3.240 Minimum 13.1 7.12 258 378 13.3 0.744 < 0.296 Average 17.3 7.47 296 478 46.2 2.219 2.043 #Tests 5 5 0 0 0 5 5 5 5 5 0 0 Site: SW-15 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Celio Tailwater ALPINE COUNTY SURFACEWATER QUALITY DATA @ Brooke Diversion 2015 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 % 05/05/15 1.060 0.028 < 0.010 < 0.030 1.06 06/03/15 07/02/15 4.980 3.680 2.780 5.940 13.70 08/11/15 5.220 3.970 1.030 7.200 13.40 09/02/15 1.040 < 0.020 < 0.010 0.177 1.21 10/06/15 11.900 9.280 0.710 8.650 21.20 Maximum 11.900 9.280 2.780 8.650 21.20 Minimum 1.040 0.020 0.010 0.030 1.06 Average 4.840 3.396 0.908 4.399 10.11 #Tests 5 5 5 5 5 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 2015 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 # urn #cells mg/L mg/L mg/L 05/05/15 7.36 10.10 06/03/15 07/02/15 3.31 19.40 08/11/15 3.51 16.40 09/02/15 7.73 13.80 10/06/15 7.73 17.00 Maximum 7.73 19.40 Minimum 3.31 10.10 Average 5.93 15.34 #Tests 0 0 0 0 0 0 0 0 0 0 5 5 0 Site: SW-15 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Cello Tailwater ALPINE COUNTY SURFACEWATER QUALITY DATA @ Brooke Diversion From 1981 To: 2015 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 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 Maximum 17.8 7.88 313 520 54.0 2.76 2.20 Minimum 10.5 7.23 116 160 15.2 0.54 0.49 Average 14.2 7.56 225 348 37.9 1.55 1.39 #Tests 15 15 0 0 0 15 15 15 15 15 0 0 Site: SW-15 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Cello Tailwater ALPINE COUNTY SURFACEWATER QUALITY DATA @ Brooke Diversion From: 1981 To: 2015 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 Maximum 6.47 5.47 0.91 4.40 10.81 Minimum 0.48 0.02 0.04 1.00 1.64 Average 3.82 2.90 0.30 2.49 6.46 #Tests 15 15 15 15 15 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 From: 1981 To: 2015 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 # urn #cells mg/L mg/L mg/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 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 7.00 11.51 #Tests 0 0 0 0 0 0 0 0 0 0 15 15 0 Site: SW-15 Nitrate-Nitrogen Total Phosphorus 10.0 _ 10.0 _ 9.0 = 9.0 = 8.0 = 8.0 = 7.0 = 7.0 6.0 = 6.0 = J J 8 5.0 = E 5.0 4.0 -: 4.0 = 3.0 = 3.0 = 2.0 - 2.0 1.0 = 1.0 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 �—Nitrate Linear(Nitrate) t Total Phosphorus Linear(Total Phosphorus) Chlorides Total Dissolved Solids 100 -_ 500 90 80 = 400 70 _ 60 = 300 J _ 50 = -6) 40 = 200 30 = 20 100 — 10 = 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 0 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 t-Chlorides Linear(Chlorides) —4—TDS Linear(TDS) Site: SW-16 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Drain Ditch ALPINE COUNTY SURFACEWATER QUALITY DATA @ Fairview Lane 2015 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 05/05/15 14.9 7.28 175 269 20.8 0.037 0.014 06/03/15 16.1 7.52 178 268 20.9 0.023 0.013 07/02/15 21.3 7.22 185 279 20.9 0.037 0.021 08/11/15 18.4 7.12 189 275 22.3 0.045 0.022 09/02/15 20.4 7.38 185 285 21.2 0.215 0.028 10/06/15 12.6 7.34 189 283 23.1 0.050 0.015 Maximum 21.3 7.52 189 285 23.1 0.215 0.028 Minimum 12.6 7.12 175 268 20.8 0.023 0.013 Average 17.3 7.31 184 277 21.5 0.068 0.019 #Tests 6 6 0 0 0 6 6 6 6 6 0 0 Site: SW-16 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Drain Ditch ALPINE COUNTY SURFACEWATER QUALITY DATA @ Fairview Lane 2015 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 % 05/05/15 0.367 < 0.020 < 0.010 < 0.010 0.367 06/03/15 0.333 < 0.020 < 0.010 < 0.010 0.333 07/02/15 0.305 0.030 < 0.010 0.013 0.318 08/11/15 0.344 < 0.020 < 0.010 < 0.010 0.344 09/02/15 0.608 < 0.020 < 0.010 < 0.010 0.608 10/06/15 0.293 < 0.020 < 0.010 < 0.010 0.293 Maximum 0.608 0.030 < 0.010 0.013 0.608 Minimum 0.293 < 0.020 < 0.010 < 0.010 0.293 Average 0.375 0.022 < 0.010 0.011 0.377 #Tests 6 6 6 6 6 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 2015 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 05/05/15 8.52 5.82 06/03/15 8.35 6.03 07/02/15 6.58 4.77 08/11/15 5.66 5.15 09/02/15 6.71 5.14 10/06/15 6.91 7.04 Maximum 8.52 7.04 Minimum 5.66 4.77 Average 7.12 5.66 #Tests 0 0 0 0 0 0 0 0 0 0 6 6 0 Site: SW-16 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Drain Ditch ALPINE COUNTY SURFACEWATER QUALITY DATA Fairview Lane From 1981 To: 2015 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 Maximum 19.6 7.70 196 301 25.7 0.60 0.33 Minimum 14.5 7.30 152 206 15.5 0.06 0.02 Average 16.3 7.50 170 246 20.4 0.14 0.05 #Tests 14 14 0 0 0 14 14 14 14 14 0 0 Site: SW-16 SOUTH TAHOE PUBLIC UTILITY DISTRICT Stream: Drain Ditch ALPINE COUNTY SURFACEWATER QUALITY DATA @ Fairview Lane From: 1981 To: 2015 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 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 0.19 0.03 0.23 1.12 #Tests 14 14 14 14 14 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: 2015 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 # urn #cells mg/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 Maximum 0 0 0 0 0 0 0 8.90 8.04 Minimum 0 0 0 0 0 0 0 6.34 5.21 Average 7.91 6.83 #Tests 0 0 0 0 0 0 0 0 0 0 14 14 0 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 w = w 0.5 = E - E 2.0 0.4 = 0.3 1.0 0.2 = = 0.1 = 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 --4--Nitrate Linear(Nitrate) tTotal Phosphorus Linear(Total Phosphorus) Chlorides Total Dissolved Solids 50 250 40 200 30 150 m 20 — 100 10 50 p 0 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 t Chlorides Linear(Chlorides) t TDS Linear(TDS) MTBE (Methyl tert-Butyl Ether) MONITORING MTBE Results Lower Sample Reporting Sample Site Date ID# Parameter Result Units Limit Method WWTP Final Effluent 02/23/2015 AG45150 MTBE ND ug/L 0.2 EPA8260 05/26/2015 AG46354 MTBE ND ug/L 0.2 EPA8260 08/31/2015 AG47720 MTBE ND ug/L 0.2 EPA8260 11/10/2015 AG48721 MTBE ND ug/L 0.2 EPA8260 HPR Effluent 07/02/2015 AG46870 MTBE ND ug/L 0.2 EPA8260 09/02/2015 AG47797 MTBE ND ug/L 0.2 EPA8260 ND =NmocrmpeleaovpeaLrtwpeerr Reporting Limit ug/L 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 1-4650-03, 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. 4) ERA A Waters Company Terry Powers South Tahoe Public Utilities District 1275 Meadow Crest Dr. South Lake Tahoe, CA 96150 USA (S WP-242 Final Report TM WatRTM Pollution Proficiency Testing WatRTM Pollution Study Open Date: 03/09/15 Close Date: 04/23/15 Report Issued Date: 04/27/15 Study#:WP-242 0 ERA A Waters Company April 27, 2015 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-242 WatRTM Pollution 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-242 WatRTM 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 0260). 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-242 WatRTM Pollution Proficiency Testing study. If you have any questions, please contact our Proficiency Testing Department at 1-800-372-0122. Sincerely, Kristina Sanchez Quality Officer attachments 16341 Table Mountain Pkwy•Golden,CO 80403•800.372.0122•303.431.8454•fax 303.421.0159•www.eraqc.com Study#:WP-242 C(i)ERA A Waters Company WP-242 Definitions & Study Discussion Study Dates: 03/09/15-04/23/15 Report Issued: 04/27/15 WP Study Definitions WP Study Discussion The Reported Value is the value that the laboratory reported ERA's WP-242 WatRTM Pollution 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-242 WatRTM Pollution 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 Limits T" as applicable. examined for study anomalies. There were no anomalies observed during the statistical review of the data. The Performance Evaluation: ERA's WP-242 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 WatRTM Pollution 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. �� 4 Study#:WP-242 OERA WP-242 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: 04/27/15 1275 Meadow Crest Dr. Study Dates: 03/09/15 -04/23/15 South Lake Tahoe, CA 96150 530-543-6231 TNIReported Assigned Acceptance Performance Analysis Stud Analyte Analyte Units Method Description Z Score Study Study Standard Analyst Name Code Value Value Limits Evaluation Date Mean Deviation WP pH(cat#577) 1900 pH S.U. 6.28 6.31 6.11-6.51 Acceptable SM 4500-H+e-2000 3/25/2015 -0.544 6.31 0.0526 2000 WP Solids Concentrate(cat#4030) 1960 Total Suspended Solids mg/L 51.4 55.7 43.8-63.3 Acceptable SM 2540 D-1997 1997 3/24/2015 -0.316 52.3 3.00 Phyllis Kunibe 1955 Total Dissolved Solids at 180°C mg/L 650 662 596-728 Acceptable SM 2540 C-1997 1997 3/24/2015 0.0174 650 13.1 Phyllis Kunibe 1950 Total Solids at 105°C mg/L 701 713 642-784 Acceptable Calc 4/10/2015 -0.554 707 11.6 WP Simple Nutrients(cat#584) 1515 Ammonia as N mg/L 12.2 13.1 10.5-15.6 Acceptable EPA 350.1 2 1993 4/10/2015 -0.674 12.9 1.01 1820 Nitrate+Nitrite as N mg/L 9.64 8.01-11.2 Not Reported 9.55 0.501 1810 Nitrate as N mg/L 8.80 9.64 7.96-11.3 Acceptable SM 4500-0003 F-201111 3/26/2015 -1.49 9.55 0.504 1870 ortho-Phosphate as P mg/L 3.29 3.37 2.86-3.88 Acceptable SM 4500-P E-1999 1999 3/25/2015 -0.360 3.36 0.181 WP Simple Nutrients(cat#584) 1515 Ammonia as N mg/L 13.1 10.5-15.6 Not Reported 12.9 1.01 1820 Nitrate+Nitrite as N mg/L 9.64 8.01-11.2 Not Reported 9.55 0.501 1810 Nitrate as N mg/L 10.4 9.64 7.96-11.3 Acceptable EPA 300.0 2.1 1993 3/25/2015 1.69 9.55 0.504 1870 Ortho-Phosphate as P mg/L 3.44 3.37 2.86-3.88 Acceptable EPA 300.0 2.1 1993 4/9/2015 0.468 3.36 0.181 WP Complex Nutrients(cat#579) 1795 Total Kjeldahl Nitrogen mg/L 10.4 11.3 8.31-14.1 Acceptable Dui ges Gstione034174 3/26/2015 -1.08 11.2 0.711 Delores Trebotich 1910 Total phosphorus as P mg/L 7.64 7.67 6.39-8.87 Acceptable SM 4500-P E-1999 1999 3/25/2015 -0.273 7.76 0.439 Phyllis Kunibe WP Nitrite(cat#888) 1840 Nitrite as N mg/L 2.13 2.17 1.85-2.49 Acceptable EPA 300.0 2.1 1993 3/13/2015 -0.475 2.19 0.129 Dan Arce aij All analytes are included in ERA's A2LA accreditation.Lab Code: 1539-01 Page 4 of 9 (5)r* 16341 Table Mountain Pkwy• Golden, CO 80403 •800.372.0122• 303.431.8454•fax 303.421.0159 •www.eraqc.com Study#:WP-242