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Reclamation Permit Monitoring Report 2nd Quarter 2018 el,iev • 1950 • Water I9ub'Iic Utilit District 1275 Meadow Crest Drive•South Lake Tahoe•CA 96150-7401 (hone 530 544-6474•Fax 530 541-0614•www.stpud.us August 13, 2018 Patty Kouyoumdjian California Regional Water Quality Control Board - Lahontan Region 2501 Lake Tahoe Boulevard South Lake Tahoe, CA 96150 RB6-Lahontan@waterboards.ca.gov Subject: Reclamation Permit Monitoring Report, 2nd Quarter 2018 Dear Ms. Kouyoumdjian, Enclosed is the South Tahoe Public Utility District's 2018 2nd quarter self-monitoring report for April through June 2018. The District is reporting as required by the Wastewater Reclamation Permit (Board Order R6T-2004-0010A3, WDID No. 6A095900700). Wastewater Reclamation Permit (Board Order R6T-2004-0010A1). The effluent met all the requirements set forth in the Board Order for this quarter; there were no violations. Emergency Retention Basin (ERB) No wastewater was pumped to the ERB during this quarter. There was no wastewater remaining in the ERB on June 30, 2018. The ERB was inspected on May 29, 2018; the report is attached. Export Pipeline The District's Final effluent export pipeline route was not inspected this quarter. Wastewater Reclamation Permit Compliance This monitoring program provides for continuous surface water monitoring, except during the months of December, January and February when only SW-01, SW-05, and SW-06 are monitored. LRWQCB - Page 2 Operational Problems or Major Maintenance Activities Modifications and operational problems occurring during this quarter are detailed in the section titled Operational Problems and Major Maintenance Activities in this report. Notes Sampling and analysis problems for offsite sample locations are listed in the Sample Comments section. Certification I certify under penalty of law that this document and all attachments were prepared under my direction or supervision following a system designed to ensure that qualified personnel properly gather and evaluate the information submitted. Based on my knowledge of the person(s) who manage the system or those directly responsible for data gathering, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment. If you have any questions or require additional information, please contact me at the number provided above. Sincerely, ,-"„'T ''�, 8J rah 4, ,5),.::',--:::c-6.--,::-.::,v.:\ 02.,.::::. - 4,::;,::',:?. .% ler i E0..✓_c'230 .i s. .a`" \\\,, ;6/( -,v1 0,.„of M J,i l l. z--A fji . •a�` a I.3„,a.,r ' ;,y,,, Shannon Cotulla Assistant General Manager / Engineer scotu I IaAstpud.dst.ca.us D:\Lahontan\Reports\2018 2nd Quarter Report.doc LRWQCB - Page 3 Enclosures: 1. Monthly Report Summary Pages Operational problems and maintenance activities. 1 Wastewater Treatment plant 6 Permit Compliance Record 1 Emergency Retention Basin (ERB) Inspection report. 2 Export Pipeline Inspection Report: 0 Sample site locations 2 Map of Alpine County sample sites 2 Harvey Place Reservoir recycled water storage 2 Diamond Ditch and Harvey Place Reservoir Trihalomethanes test results 14 Alpine County and Tahoe Basin Surface waters, Groundwaters, and HPR 7 Blue Green Algae results 1 Alpine County and Tahoe Basin groundwater elevations 1 Alpine County soils 1 Sample Comments 1 Tahoe Basin ERB Monitoring Wells Purge Records 4 Alpine County Monitoring Wells Purge Records 12 Photos of Irrigation ditch flows 0 Total pages 57 cc: Alpine County Board of Supervisors STPUD Contract Commission — Dr. Richard Harvey Alpine County Health Department— Dr. Richard Johnson Alpine County Health Department — Dennis Lampson pdf: Irvin Jim, Woodfords Community Council Chairman Nevada Division of Environmental Protection — Jean Stone STPUD General Manager - Richard Solbrig STPUD Alpine County Operations — Jim Hilton STPUD Manager of Operations — Jeff Lee STPUD Operations Chief Plant Operator— Chris Siano STPUD Laboratory Director— Dan Arce D:\Lahontan\Reports\2018 2nd Quarter Report.doc Operational Problems and Major Maintenance Activities April — June 2018 Wastewater Treatment Facilities • Operation of Activated Sludge System was modified to include variable RAS flow rate. • A 2 year project to replace Break Point Structure and Plant Generator began. Related activities included: o Diversion of flow from Break Point Structure to Pond #2 to allow for demolition of structure and existing piping. o Demolition and replacement of conduit runs in preparation for the installation of new generator. Wastewater Conveyance System • Sewer Pump Stations o Pump #3 at Johnson Sewer Pump Station was rebuilt. o Pump #2 at Ponderosa Sewer Pump Station was replaced. o A leak on the force main at Gardner Sewer Pump Station was repaired. o Fallen Leaf#9 Sewer Pump Station was converted from vacuum power to pure electric power. • Collection System o No major maintenance activities or problems reported. Alpine County Disposal Facilities • There were no modifications or additions to, or any major maintenance or construction conducted on, or any major problems occurring at the disposal facilities in Alpine County from April thru June. Page 1 SOUTH TAHOE PUBLIC UTILITY DISTRICT 8/14/2018 • WASTEWATER TREATMENT PLANT MONTHLY REPORT 8:08 AM April 2018 < Flow MGD > BOD SS 2-Hr Peak Pond Pond Precipitation mg/L mg/L Date Day Inf Inf Eff Return Inf Inch Type Raw Final Raw Final 4/1/2018 Sun 4.65 6.1 5.08 4/2/2018 Mon 4.51 5.6 5.25 4/3/2018 Tue 4.36 5.3 4.73 4/4/2018 Wed 4.25 5.2 4.72 178 5.7 138 4.8 4/5/2018 Thu 4.24 5.1 4.65 0.01 Rain 4/6/2018 Fri 5.15 5.7 5.83 0.65 Rain 4/7/2018 Sat 6.75 8.9 6.96 0.74 Rain 146 7.2 136 5.5 4/8/2018 Sun 4.81 6.7 5.25 4/9/2018 Mon 4.14 5.1 4.78 4/10/2018 Tue 4.10 6.1 4.36 4/11/2018 Wed 3.94 4.6 4.29 0.13 Snow 179 3.9 159 2.9 4/12/2018 Thu 3.92 4.6 4.16 0.02 Snow 4/13/2018 Fri 3.92 4.7 4.39 4/14/2018 Sat 4.10 5.1 4.28 185 6.0 170 3.7 4/15/2018 Sun 4.09 5.5 4.35 0.23 Snow 4/16/2018 Mon 3.91 4.8 4.02 0.16 Snow 4/17/2018 Tue 3.77 4.4 4.33 4/18/2018 Wed 3.71 4.5 4.25 NV NV 134 2.1 4/19/2018 Thu 3.67 4.4 3.73 4/20/2018 Fri 3.76 4.5 4.08 4/21/2018 Sat 4.01 5.0 4.17 200 5.2 178 2.9 4/22/2018 Sun 3.88 5.3 4.14 4/23/2018 Mon 3.58 4.4 3.78 4/24/2018 Tue 3.74 5.4 4.11 4/25/2018 Wed 3.41 4.5 3.77 182 4.1 164 2.4 4/26/2018 Thu 3.40 4.1 4.22 4/27/2018 Fri 3.53 4.4 3.78 4/28/2018 Sat 3.64 4.7 3.73 202 6.8 153 3.6 4/29/2018 Sun 3.55 4.6 3.92 4/30/2018 Mon 3.38 4.3 3.49 0.15 Rain Permit Max 7.7 45 60 Permit Min Permit Ave 30 30 Total 121.87 153.6 132.60 0.00 0.00 2.09 1272 38.8 1232 27.9 Maximum 6.75 8.9 6.96 0.00 0.00 0.74 202 7.2 178 5.5 Minimum 3.38 4.1 3.49 0.00 0.00 0.01 146 3.9 134 2.1 Average 4.06 5.1 4.42 0.26 182 5.5 154 3.5 #Tests 30 30 30 0 0 8 7 7 8 8 Page 2 SOUTH TAHOE PUBLIC UTILITY DISTRICT 8/14/2018 WASTEWATER TREATMENT PLANT MONTHLY REPORT 8:08 AM April 2018 pH Chlorine <Final Total Coliforms> Total Nitrogen TDS Units mg/L MPN-/100 mL mg/L mg/L Date Day Raw Final Final Total may-Median Raw Final Raw Final 4/1/2018 Sun 7.29 7.62 7.2 3.1 < 1 4/2/2018 Mon 7.45 7.84 6.6 < 1 < 1 32.0 25.9 4/3/2018 Tue 7.25 7.58 6.6 < 1 < 1 4/4/2018 Wed 7.30 7.57 6.2 < 1 < 1 233 238 4/5/2018 Thu 7.36 7.70• 6.8 < 1 < 1 4/6/2018 Fri 7.41 7.74 6.4 < 1 < 1 4/7/2018 Sat 7.39 7.69 7.1 < 1 < 1 4/8/2018 Sun 7.43 7.67 7.2 < 1 < 1 4/9/2018 Mon 7.36 7.66 7.0 < 1 < 1 27.1 19.0 4/10/2018 Tue 7.39 7.78 6.8 < 1 < 1 4/11/2018 Wed 7.40 7.75 6.4 < 1 < 1 268 222 4/12/2018 Thu 7.44 7.71 6.4 < 1 < 1 4/13/2018 Fri 7.49 7.80 10.3 < 1 < 1 4/14/2018 Sat 7.46 7.70 7.6 < 1 < 1 4/15/2018 Sun 7.48 7.76 8.2 < 1 < 1 4/16/2018 Mon 7.62 7.75 6.6 < 1 < 1 32.3 24.3 4/17/2018 Tue 7.53 7.84 5.9 < 1 < 1 4/18/2018 Wed 7.50 7.80 7.1 < 1 < 1 4/19/2018 Thu 7.47 7.74 6.8 < 1 < 1 4/20/2018 Fri 7.43 7.70 5.0 < 1 < 1 4/21/2018 Sat 7.47 7.74 6.6 < 1 < 1 4/22/2018 Sun 7.52 7.83 7.4 < 1 < 1 4/23/2018 Mon 7.57 7.84 7.7 < 1 < 1 4/24/2018 Tue 7.40 7.82 6.5 < 1 < 1 25.8 21.1 4/25/2018 Wed 7.46 7.87 6.3 < 1 < 1 259 238 4/26/2018 Thu. 7.47 7.72 6.3 < 1 < 1 4/27/2018 Fri 7.49 7.76 6.8 < 1 < 1 4/28/2018 Sat 7.43 7.73 6.7 < 1 < 1 4/29/2018 Sun 7.53 7.82 6.4 < 1 < 1 4/30/2018 Mon 7.47 7.78 8.1 < 1 < 1 30.9 24.4 Permit Max 9.00 23 Permit Min 6.50 Permit Ave Total 223.26 232.31 207.0 32.1 30 148.1 114.7 760 698 Maximum 7.62 7.87 10.3 3.1 1 32.3 25.9 268 238 Minimum 7.25 7.57 5.0 1 1 25.8 19.0 233 222 Average 7.44 7.74 6.90 1.1 1.0 29.6 22.9 253 233 #Tests 30 30 30 30 30 5 5 3 3 Page 1 SOUTH TAHOE PUBLIC UTILITY DISTRICT 8/14/2018 WASTEWATER TREATMENT PLANT MONTHLY REPORT 8:08 AM May2018 < Flow MGD > BOD SS 2-Hr Peak Pond Pond Precipitation mg/L mg/L Date Day Inf Inf Eff Return Inf Inch Type Raw Final Raw Final 5/1/2018 Tue 3.40 4.1 3.69 - 188 5.6 176 2.9 5/2/2018 Wed 3.35 4.1 3.64 5/3/2018 Thu 3.35 4.0 3.52 5/4/2018 Fri 3.43 4.0 3.75 5/5/2018 Sat 3.65 4.8 3.82 220 7.6 176 7.1 5/6/2018 Sun 3.55 4.8 3.81 5/7/2018 Mon 3.37 4.3 3.53 208 7.7 175 7.2 5/8/2018 Tue 3.30 4.0 3.48 5/9/2018 Wed 3.28 4.1 3.74 5/10/2018 Thu 3.29 4.0 3.44 5/11/2018 Fri 3.35 4.1 3.94 0.02 Rain 5/12/2018 Sat 3.50 4.5 3.79 0.10 Rain 221 9.2 155 8.6 5/13/2018 Sun 3.40 4.5 3.67 0.04 Rain 5/14/2018 Mon 3.31 4.2 3.63 0.08 Rain 5/15/2018 Tue 3.30 4.2 3.55 0.06 Rain 5/16/2018 Wed 3.41 4.1 4.08 0.38 Rain 198 6.5 150 6.3 5/17/2018 Thu 3.40 4.1 3.39 5/18/2018 Fri 3.37 4.2 3.92 5/19/2018 Sat 3.69 4.8 3.93 213 7.1 199 6.7 5/20/2018 Sun 3.61 4.9 3.87 5/21/2018 Mon 3.39 4.2 3.62 0.14 Rain 5/22/2018 Tue 3.30 4.1 3.54 5/23/2018 Wed 3.31 4.0 3.75 0.01 Rain 199 4.6 171 4.4 5/24/2018 Thu 3.40 4.3 4.35 0.70 Rain 5/25/2018 Fri 3.79 4.5 3.99 0.13 Rain 5/26/2018 Sat 4.28 5.5 4.37 0.02 Rain 234 6.9 5/27/2018 Sun 4.45 6.1 4.10 5/28/2018 Mon 4.07 5.9 4.86 s 5/29/2018 Tue 3.52 4.5 3.74 5/30/2018 Wed 3.43 4.3 4.30 194 9.0 156 2.9 5/31/2018 Thu 3.42 4.5 3.95 Permit Max 7.7 45 60 Permit Min Permit Ave 30 30 Total 108.67 137.7 118.76 0.00 0.00 1.68 1641 57.3 1592 53.0 Maximum 4.45 6.1 4.86 0.00 0.00 0.70 221 9.2 234 8.6 Minimum 3.28 4.0 3.39 0.00 0.00 0.01 188 4.6 150 2.9 Average 3.51 4.4 3.83 0.15 205 7.2 177 5.9 #Tests 31 31 31 0 0 11 8 8 9 9 Page 2 SOUTH TAHOE PUBLIC UTILITY DISTRICT 8/14/2018 WASTEWATER TREATMENT PLANT MONTHLY REPORT 8:08 AM May 2018 pH Chlorine <Final Total Coliforms> Total Nitrogen TDS Units mg/L MPN/100 mL mg/L mg/L Date Day Raw Final Final Total may-Median Raw Final Raw Final 5/1/2018 Tue 7.55 7.88 7.0 < 1 < 1 246 239 5/2/2018 Wed 7.54 7.78 7.4 < 1 < 1 5/3/2018 Thu 7.51 7.80 6.8 < 1 < 1 5/4/2018 Fri 7.54 7.78 9.0 < 1 < 1 5/5/2018 Sat 7.51 7.73 8.9 < 1 < 1 5/6/2018 Sun 7.50 7.74 6.6 < 1 < 1 5/7/2018 Mon 7.50 7.88 6.9 < 1 < 1 252 244 5/8/2018 Tue 7.45 7.80 6.6 < 1 < 1 5/9/2018 Wed 7.54 7.83 6.4 < 1 • < 1 31.3 25.4 5/10/2018 Thu 7.48 7.78 6.2 < 1 < 1 5/11/2018 Fri 7.51 7.92 9.5 < 1 < 1 5/12/2018 Sat 7.56 7.77 9.8 1 < 1 5/13/2018 Sun 7.58 7.86 6.4 < 1 < 1 5/14/2018 Mon 7.45 7.88 6.4 1 < 1 36.3 28.4 5/15/2018 Tue 7.47 7.82 6.4 < 1 < 1 5/16/2018 Wed 7.48 7.90 6.5 < 1 < 1 5/17/2018 Thu 7.57 7.86 6.9 < 1 < 1 5/18/2018 Fri 7.53 7.80 7.2 < 1 < 1 5/19/2018 Sat 7.50 7.86 7.0 < 1 < 1 5/20/2018 Sun 7.45 7.82 6.2 < 1 < 1 5/21/2018 Mon 7.48 7.82 6.0 < 1 < 1 35.5 27.7 5/22/2018 Tue 7.53 7.88 6.8 < 1 < 1 5/23/2018 Wed 7.47 7.96 6.6 < 1 < 1 254 248 5/24/2018 Thu 7.48 7.84 6.2 5/25/2018 Fri 7.44 7.73 6.3 < 1 < 1 5/26/2018 Sat 7.47 7.76 6.6 < 1 < 1 5/27/2018 Sun . 7.48 7.84 7.0 < 1 < 1 5/28/2018 Mon 7.46 7.86 5.8 < 1 < 1 5/29/2018 Tue 7.49 7.87 5.3 < 1 < 1 5/30/2018 Wed 7.51 7.78 6.3 < 1 < 1 5/31/2018 Thu 7.48 7.80 5.4 1 < 1 Permit Max 9.00 23 Permit Min 6.50 Permit Ave Total 232.51 242.63 212.4 30 30 103.1 81.5 752 731 Maximum 7.58 7.96 9.8 1 1 36.3 28.4 254 248 Minimum 7.44 7.73 5.3 1 1 31.3 25.4 246 239 Average 7.50 7.83 6.85 1.0 1.0 34.4 27.2 251 244 #Tests 31 31 31 30 30 3 3 3 3 Page 1 SOUTH TAHOE PUBLIC UTILITY DISTRICT 8/14/2018 WASTEWATER TREATMENT PLANT MONTHLY REPORT 8:08 AM June 2018 < Flow MGD > BOD SS 2-Hr Peak Pond Pond Precipitation mg/L mg/L Date Day Inf Inf Eff Return Inf Inch Type Raw Final Raw Final 6/1/2018 Fri 3.54 4.9 3.89 6/2/2018 Sat 3.85 5.0 4.01 225 13.3 178 3.4 6/3/2018 Sun 3.81 5.1 4.19 6/4/2018 Mon 3.52 4.5 3.95 6/5/2018 Tue 3.49 4.8 3.75 6/6/2018 Wed 3.46 4.4 4.10 7.3 186 1.5 6/7/2018 Thu 3.47 4.2 3.86 6/8/2018 Fri 3.65 4.5 3.98 6/9/2018 Sat 3.97 5.2 3.51 271 7.2 214 2.0 6/10/2018 Sun 3.94 5.5 4.68 6/11/2018 Mon 3.66 5.0 3.94 6/12/2018 Tue 3.68 5.6 4.02 6/13/2018 Wed 3.55 4.5 3.75 NV NV 212 1.5 6/14/2018 Thu 3.59 4.6 4.50 6/15/2018 Fri 3.86 4.7 3.96 6/16/2018 Sat 4.20 5.4 4.60 NV NV 250 3.6 6/17/2018 Sun 3.96 5.8 4.11 6/18/2018 Mon 3.73 4.7 4.16 6/19/2018 Tue 3.65 4.9 3.56 237 7.4 194 2.3 6/20/2018 Wed . 3.59 4.6 3.16 6/21/2018 Thu 3.70 4.7 4.06 6/22/2018 Fri 3.90 4.7 5.06 6/23/2018 Sat 4.19 5.6 3.56 286 8.2 245 2.8 6/24/2018 Sun 4.00 5.6 4.23 6/25/2018 Mon 4.00 4.9 3.90 6/26/2018 Tue 3.58 4.8 3.69 234 5.9 190 3.8 6/27/2018 Wed 3.66 4.6 3.87 6/28/2018 Thu 3.70 4.7 4.06 6/29/2018 Fri 3.85 4.9 4.72 6/30/2018 Sat 4.16 5.5 4.68 251 5.2 218 2.4 Permit Max 7.7. 45 60 Permit Min Permit Ave 30 30 Total 112.91 147.9 121.51 0.00 0.00 0.00 1504 54.3 1887 23.2 Maximum 4.20 5.8 5.06 0.00 0.00 0.00 286 13.3 250 3.8 Minimum 3.46 4.2 3.16 0.00 0.00 0.00 225 5.2 178 1.5 Average 3.76 4.9 4.05 251 7.8 210 2.6 #Tests 30 30 30 0 0 0 6 7 9 9 Page 2 SOUTH TAHOE PUBLIC UTILITY DISTRICT 8/14/2018 WASTEWATER TREATMENT PLANT MONTHLY REPORT 8:08 AM June 2018 pH Chlorine <Final Total Coliforms> Total Nitrogen TDS Units mg/L MPN/100 mL mg/L mg/L Date Day Raw Final Final Total may-Median Raw Final Raw Final 6/1/2018 Fri 7.40 7.80 7.0 1 < 1 6/2/2018 Sat 7.53 7.86 5.7 < 1 < 1 6/3/2018 Sun 7.54 7.87 5.4 1 < 1 6/4/2018 Mon 7.47 7.88 6.2 1 1 41.0 31.3 6/5/2018 Tue 7.59 7.85 5.6 1 1 6/6/2018 Wed 7.56 8.00 5.4 3.1 1 258 257 6/7/2018 Thu 7.39 7.76 7.0 1 1 6/8/2018 . Fri 7.42 7.84 5.9 1 1 6/9/2018 . Sat 7.52 7.94 5.6 < 1 1 6/10/2018 Sun 7.46 7.84 6.9 1 1 6/11/2018 Mon 7.53 7.87 5.4 < 1 1 6/12/2018 Tue 7.51 7.86 6.2 < 1 1 6/13/2018 Wed 7.45 7.88 5.2 < 1 < 1 40.8 33.3 260 267 6/14/2018 Thu 7.45 7.77 6.8 < 1 < 1 6/15/2018 Fri 7.39 7.72 7.0 < 1 < 1 6/16/2018 Sat 7.51 7.88 6.1 < 1 < 1 6/17/2018 Sun '7.50 7.85 6.0 < 1 < 1 6/18/2018 Mon 7.50 7.92 7.2 < 1 < 1 42.8 38.1 6/19/2018 Tue 7.43 7.94 6.0 < 1 < 1 6/20/2018 Wed 7.37 7.88 6/21/2018 Thu 7.46 7.88 9.5 < 1 < 1 6/22/2018 Fri 7.52 7.94 10.0 < 1 < 1 6/23/2018 Sat 7.54 7.90 5.5 < 1 < 1 6/24/2018 Sun 7.48 7.95 6.0 < 1 < 1 49.1 40.5 6/25/2018 Mon 7.44 7.85 12.0 < 1 < 1 6/26/2018 Tue 7.48 7.97 9.7 < 1 < 1 262 291 6/27/2018 Wed 7.53 7.93 7.8 < 1 < 1 6/28/2018 Thu 7.46 7.87 8.1 < 1 < 1 6/29/2018 Fri 7.52 7.82 7.5 < 1 < 1 6/30/2018 Sat 7.44 7.87 7.4 < 1 < 1 Permit Max 9.00 23 Permit Min 6.50 Permit Ave Total 224.39 236.19 200.1 31.1 29 173.7 143.2 780 815 Maximum 7.59 8.00 12.0 3.1 1 49.1 40.5 262 291 Minimum 7.37 7.72 5.2 1 1 40.8 31.3 258 257 Average 7.48 7.87 6.90 1.1 1.0 43.4 35.8 260 272 #Tests 30 30 29 29 29 4 4 3 3 • Page 3 SOUTH TAHOE PUBLIC UTILITY DISTRICT WASTEWATER TREATMENT PLANT NUMBER OF VIOLATIONS 2018 Parameter #Tests Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Total Compliance Total Plant Inflow;7.7 MGD;Dry Weather 181 0 0 0 0 0 0 0 100.0% 2-Hour Peak Inflow; 18.5 MGD 181 0 0 0 0 0 0 0 100.0% BOD,30 Day Ave:30 mg/L 6 0 0 0 0 0 0 0 100.0% BOD, Max:45 mg/L 45 0 0 0 0 0 0 0 100.0% SS,30 Day Ave:30 mg/L 6 0 0 0 0 0 0 0 - 100.0% SS,Max:60 mg/L 52 0 0 0 0 0 0 0 100.0% pH,6.5 to 8.5 181 0 0 0 0 0 0 0 100.0% Total Coliforms,Max:240 MPN/100 mL 179 0 0 0 0 0 00 100.0% Total Coliforms,7-day Median:23 MPN 179 0 0 0 0 0 0 0 100.0% Total 1,010 0 0 0 0 0 0 0 0 0 0 0 0 0 100.0% South Tahoe Public Utility District ERB Inspection Date of Inspection: - Performed by: R Inspection Procedure: Walk the entire crest of the ERB looking for any problems. Pay particular attention to the condition of the liner.Note the location of any needed repairs on the map on the next page. If the basin is empty and free of snow,walk the entire interior tow checking for liner failures. Scan the entire floor for breaches of any kind. Rodent activity: ; F ,* iv 6 4 a t Vegetation control: t, 'veep r-,o Amo ('g 'J`l Overflow Spillway: 61 k Stairs North: �U A Stairs South: Av A Top Fill Structure North: Top Fill Structure South: o Drain Valve North: o Drain Valve South: n i Perimeter Fence& Gates: A L PIA c Nee 6 u) n.,r Valve House: is K Comments: • Date of Inspection: 5-2-1- t 41 Performed by: Tele a-1 14.1 f f rit' II .. ! 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';';',77:7,:';',': TI, `Type_;Saniple' r Alpine County Monitoring Wells ACMW-01AW 38.766952 -119.781561 Below Main Dam Monitoring Well ACMW-01 BE 38.766333 -119.785321- Below Secondary Dam Monitoring Well ACMW-02N 38.772392 -119.776819 Access gate Monitoring Well ACMW-02S 38.772341 -119.776816 Access gate Monitoring Well ACMW-03W 38.815138 -119.778848 Fredericksburg D @Hwy 88 Monitoring Well ACMW-04W 38.836719 -119.779439 Gansberg Ranch Monitoring Well ACMW-06N 38.800522 -119.763225 Celio Ranch,along DV Rd Monitoring Well ACMW-06S 38.800481 -119.763195 Celio Ranch,along DV Rd Monitoring Well ACMW-07S 38.771882 -119.801658 Diamond Valley Ranch Monitoring Well ACMW-07D 38.771882 _ -119.801658 Diamond Valley Ranch Monitoring Well ACMW-08N 38.773618 -119.776847 Diamond Valley Ranch Monitoring Well ACMW-08S 38.773618 -119.776847 Diamond Valley Ranch Monitoring Well ACMW-09D 38.780489 -119.790314 Diamond Valley Ranch Monitoring Well ACMW-09S 38.780489 -119.790314 Diamond Valley Ranch Monitoring Well ACMW-10 38.773336 -119.794246 Diamond Valley Weather Station Monitoring Well ACMW-11 38.775595 -119.788216 Diamond Valley Ranch Monitoring Well ACMW-12 38.777644 -119.795388 Diamond Valley Ranch Monitoring Well ACMW-13 38.768977 119.797083 Diamond Valley Ranch Monitoring Well ACMW-14 38.767441 119.793215 Diamond Valley Ranch Monitoring Well ACMW-15 38.769600 119.784280 Diamond Valley Ranch Monitoring Well ACMW-16 38.773829 119.784173 Diamond Valley Ranch Monitoring Well ACMW-17 38.776273 119.790107 Diamond Valley Ranch Monitoring Well ACMW-18 38.779213 119.782997 Diamond Valley Ranch Monitoring Well ACMW-19 38.776249 119.762112 Diamond Valley Ranch Monitoring Well ACMW-20 38.808781 119.777665 Near SW-05 Monitoring Well ACMW-21 38.819915 119.777072 Emigrant Trail near Chambers Lane Monitoring Well ACMW-22 38.829022 119.783738 Fredericksburg Lane near S7 Monitoring Well ACMW-23 38.825384 119.760193 On road to SW-15,upstream(S) Monitoring Well ACMW-24 38.832193 119.757427 On road,downstream (N) of SW-15 Monitoring Well ACMW-25 38.830470 119.769901 Road between Brooke's&Neddenriep @ Neddenripp's Monitoring Well ACMW-26 38.840602 119.769677 Road between Brooke's&Neddenriep @ Stateline Monitoring Well Alpine County Domestic Well GW-01 38.761146 -119.810926 Cohen House Domestic Well GW-02 38.772195 -119.801259 DV Ranch Domestic well Domestic Well GW-03 38.789132 -119.752446 Springmeyer Ranch house Domestic Well GW-04 38.800343 -119.762579 Celio Ranch house Domestic Well GW-05 38.830897 -119.773807 Neddenriep Ranch house Domestic Well GW-07 38.838895 -119.794154 Gansberg,Jr,Ranch house Domestic Well GW-08 38.815528 -119.781095 Arant Ranch house Domestic Well GW-11 38.766522 -119.808540 Diamond Valley School Domestic Well GW-14 38.757140 -119.818462 Sierra Pines Store Domestic Well GW-17 DVRanch Domestic well Domestic Well D:\Lahontan\Sample Sites\Lahontan Report-Sample Sites Page 1 of 2 Sample Sites vSite,. latitude; Lon etude .Location 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 Bart Ave Monitoring Well MW03.5 38.9140351 -119.9664341 W side of Emergency Retention Basin,off Hank Monk Ave Monitoring Well MW04-50 38.9148881 -119.9666463 W side of Emergency Retention Basin,off Hank Monk Ave Monitoring Well MW05-50 38.9157076 -119.9663302 NW corner of Emergency Retention Basin,off Hank Monk Ave Monitoring Well MW06/50 38.9157148 -119.9648075 North side of Emergency Retention Basin Monitoring Well MW07-50 38.9157020 -119.9639551 NE corner of Emergency Retention Basin Monitoring Well MW08-25 38.9213967 -119.9709800 SW corner of Pond#1,at south access gate to STPUD Monitoring Well MW11 38.9238680 -119.9677190 250 ft south east of North Gate(to Al Tahoe Blvd) Monitoring Well MW 12 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\Sample Sites\Lahontan Report-Sample Sites Page 2 of 2 • ' Y • ::,.„4,,:. l 2• r ' '� . ,,f' 1 I O �• I E ,.NS , ,I E + . •.,l, .3. 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I f.:',••,•,-• • I ".•#:,--..•::,,,,:• • { ( • PRIVATE WELL F {{ L , , ,�,�, t- :I i. Irrigation_Rec led 23 Water ,' ''� 1 f' ..1.. ,'',41 st •••,....-.,...., 1.1,,,,,••••,,. :I I [.......-:] •Irngation•Blended Recycled Water '.., I 4 1 �'—.{ I X71 .`. .1', I ! 1 I ;'1 • l''',., 1 .,c . ' • :414 ',1 1 t •, ,M•t 1. r i}s.'• 1 y i y4 i ' j i o i t • • • t , , r 1 0 1900 3900 5,000 Feet SOUTH TAHOE PUBLIC UTILITY DISTRICT ” RECYCLED WATER MONITORING PROGRAM WELL LOCATIONS W % E ' CARSON VALLEY GROUNDWATER BASIN (6-6) •°° ALPINE COUNTY,CA t - 8 r Paan:X 1.,1510 Wpn.Co6nr(,20 sl AI.PMWS 2i x 36.mxi 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 01/01/16 743 3,057 02/01/16 1,185 2,615 03/01/16 1,493 2,307 04/01/16 1,875 1,925 05/01/16 2,104 1,696 06/01/16 2,322 1,478 07/01/16 2,139 1,661 08/01/16 1,304 2,496 09/01/16 595 3,205 10/01/16 72 3,728 11/01/16 243 3,557 12/01/16 479 3,321 01/01/17 940 2,860 02/01/17 1,843 1,957 03/01/17 3,082 718 04/01/17 3,460 340 05/01/17 3,005 795 06/01/17 2,617 1,183 07/01/17 2,210 1,590 08/01/17 1,626 2,174 09/01/17 878 2,922 10/01/17 114 3,686 11/01/17 220 3,580 12/01/17 544 3,256 01/01/18 878 2,922 02/01/18 1,177 2,623 03/01/18 1,410 2,390 04/01/18 1,938 1,862 05/01/18 2,246 1,554 06/01/18 2,465 1,335 E:\HPR\HPR Current Storage-Lahontan_Report Acre-feet -� -� N N W W -P 01 CD 01 O 01 O 01 O CD CD CD CD CD CD O O CD O CD CD CD CD CD CD CD 01/16 02/16 03/16 04/16 05/16 06/16 07/16 08/16 73 I 09/16 CD g) 0 10/16 11/16 0 CD 12/16 01/17 O 02/17 03/17 04/17CD xi rF 05/17 - 06/17 ) Cl) 07/17 0 08/17 m 09/17. (Q O. 10/17 CD "' 11/17 12/17 01/18 02/18 03/18 04/18 05/18 06/18 07/18 08/18 09/18 10/18 11/18 12/18 ENVIRONMENTAL - AGRICULTURAL Analytical Chemists August 15, 2018 South Tahoe Public Utility District Lab ID : SP 1808459 1275 Meadow Crest Drive Customer : 2-11369 South Lake Tahoe, CA 96150 Laboratory Report Introduction: This report package contains total of 12 pages divided into 3 sections: Case Narrative (2 pages) : An overview of the work performed at FGL. Sample Results (6 pages) : Results for each sample submitted. Quality Control (4 pages) : Supporting Quality Control(QC)results. Case Narrative This Case Narrative pertains to the following samples: Sample Description Date Date FGL Lab ID# Matrix p p Sampled Received DD-01 06/26/2018 06/27/2018 SP 1808459-001 WW HPR 06/26/2018 06/27/2018 SP 1808459-002 WW Sampling and Receipt Information: All samples were received in acceptable condition and within temperature requirements,unless noted on the Condition Upon Receipt(CUR) form. All samples arrived at 4 °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 06/28/2018:207497 All preparation quality controls are within established criteria,except: 5030B The following note applies to 1,1-Dichloroethylene,Benzene,Trichloroethylene(TCE),Chlorobenzene, Toluene: 435 Sample matrix may be affecting this analyte.Data was accepted based on the LCS or CCV recovery. 06/28/2018:209698 All analysis quality controls are within established criteria,except: 8260B The following note applies to 1,2,3-Trichlorobenzene, 1,2,4-Trichlorobenzene, 1,4-Dichlorobenzene, Tetrachloroethylene(PCE),Hexachlorobutadiene,DBC: 360 CCV above Acceptance Range(AR). Samples which were non detect for this analyte were accepted. Discussion of Analytical Results: Amended Report SP 1808459-001 DD-01 Amended to report additional EPA 8260 analytes. (08/16/18) SP 1808459-002 HPR Amended to report additional EPA 8260 analytes. (08/16/18) Amended Page 1 of 12 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 August 15,2018 Lab ID : SP 1808459 South Tahoe Public Utility District Customer : 2-11369 Certification:: I certify that this data package is in compliance with ELAP standards,both technically and for completeness, except for any conditions listed above. Release of the data contained in this data package is authorized by the Laboratory Director or his designee, as verified by the following electronic signature. KD:VT Digitally signed by David'I'err..B.A.,M.B.A. Approved By David Terz,B.A.,M.B.A. Title:QA Director Date:2018-08-15 Amended Page 2 of 12 • ENVIRONMENTAL AGRICULTURAL Analytical Chemists August 15,2018 Lab ID : SP 1808459-001 Customer ID : 2-11369 South Tahoe Public Utility District 1275 Meadow Crest Drive Sampled On : June 26,2018-09:23 South Lake Tahoe, CA 96150 Sampled By : Not Available Received On : June 27, 2018-11:54 Matrix : Waste Water Description : DD-01 Project : AG62050 Sample Result-Organic Constituent Result PQL MDL Units Dilution DQF Sample Preparation Sample Analysis Method ID Time Method ID Time EPA 8260 4-Bromofluorobenzene 83.4 78-123 % 1 5030B 207497 06/28/18 06:00 8260B 209698-G1v1214 06/28/18-19:20VRG Dibromofluoromethanet 83.9 65-125 % 1 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG 1,2-Dichloroethane-d41: 92.3 58-144 % 1 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG Toluene-d81 98.3 92-107 % 1 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG Acetone ND 10 1.7 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG Benzene ND 1 0.088 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B - 209698-GM214 06/28/18-19:20VRG Bromobenzene ND 1 0.054 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG Bromochloromethane ND 1 0.046 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG Bromodichloromethane ND 1 0.067 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG Bromoform ND 1 0.055 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG Bromomethane ND 1 0.12 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG tert-Butanol ND 5 0.48 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG 2-Butanone(MEK) ND 10 2.2 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG n-Butylbenzene ND 1 0.13 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG sec-Butylbenzene ND 1 0.097 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG tert-Butylbenzene ND 1 0.097 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG Carbon Disulfide ND 1 6.8 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG Carbon Tetrachloride ND 1 0.18 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG Chlorobenzene ND 1 0.066 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG Chloroethane ND 1 0.29 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG Amended Page 3 of 12 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)343-5818TEL:(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 August 15,2018 Lab ID : SP 1808459-001 South Tahoe Public Utility District Description : DD-01 Sample Result-Organic Constituent Result PQL MDL Units Dilution DQF Sample Preparation Sample Analysis Method ID Time Method ID Time EPA 8260 Chloroform 0.198 1 0.088 ug/L 1 J ' 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG Chloromethane ND 1 0.097 ug/L 1 U 5030B 207497 06/28/18 06:00 , 8260B 209698-GM214 06/28/18-19:20VRG 2-Chlorotoluene ND 1 0.072 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG 4-Chlorotoluene ND 1 0.15 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG 1,2-Dibromo-3-chloropropane ND 1 0.13 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG Dibromochloromethane ND 2 0.060 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM21406/28/18-19:20VRG Dibromomethane ND 1 0.048 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG 1,2-Dichlorobenzene ND 1 0.18 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG 1,3-Dichlorobenzene ND 1 0.061 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG 1,4-Dichlorobenzene ND 1 0.24 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:2OVRG Dichlorodifluoromethane ND 1 - 0.23 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG 1,1-Dichloroethane ND 1 0.13 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG 1,2-Dichloroethane ND 1 0.065 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG 1,1-Dichloroethylene ND 1 0.17 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG cis-1,2-Dichloroethylene ND 1 0.13 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG trans-1,2-Dichloroethylene ND 1 0.22 ug/L 1 U 5030B 207497 06/28/18 06:00 826013 209698-GM214 06/28/18-19:20VRG 1,2-Dichloropropane ND 1 0.089 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG 1,3-Dichloropropane ND 1 0.049 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG 2,2-Dichloropropane ND 1 0.11 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG 1,1-Dichloropropene ND 1 0.14 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG Di-isopropyl ether(DIPE) ND 0.5 0.051 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:2OVRG Ethyl Benzene ND 1 0.099 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG Ethyl tert-butyl ether(ETBE) ND 0.5 0.051 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG Hexachlorobutadiene ND 1 0.17 ug/L 1 U 503013 207497 06/28/18 06:00 826013 209698-GM214 06/28/18-19:20VRG 2-Hexanone ND 10 2.4 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG Isopropylbenzene ND 1 0.037 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG p-Isopropyltoluene ND 1 0.095 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG Methyl tert-butyl ether(MTBE) ND 0.2 0.036 ug/L 1 U _5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG 4-Methyl-2-pentanone(MIBK) ND 10 0.58 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG _ Methylene Chloride ND 1 0.065 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG Amended Page 4 of 12 1 August 15, 2018 Lab ID : SP 1808459-001 South Tahoe Public Utility District Description : DD-01 Sample Result-Organic Constituent Result PQL MDL Units Dilution DQF Sample Preparation Sample Analysis Method ID Time Method ID Time EPA 8260 Naphthalene ND 1 0.13 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG n-Propylbenzene ND 1 0.089 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:2OVRG Styrene ND 1 0.061 S ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG tert-Amyl methyl ether(TAME) ND 0.5 0.037 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG 1,1,1,2-Tetrachloroethane ND 1 0.099 ug/L 1 U 5030B 207497 06/28/18 06:00 8260E 209698-GM214 06/28/18-19:20VRG 1,1,2,2-Tetrachloroethane ND 1 0.12 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG Tetrachloroethylene ND 1 0.31 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:2OVRG Toluene ND 1 0.11 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG 1,2,3-Trichlorobenzene ND 1 0.13 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG 1,2,4-Trichlorobenzene ND 1 0.16 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG 1,1,1-Trichloroethane ND 1 0.14 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-1920VRG 1,1,2-Trichloroethane ND 1 0.058 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG Trichloroethylene ND 1 0.13 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG Trichlorofluoromethane ND 1 0.13 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG 1,2,3-Trichloropropane ND 1 0.095 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG 1,2,4-Trimethylbenzene ND 1 0.076 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG 1,3,5-Trimethylbenzene ND 1 0.10 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG Vinyl Acetate ND 100 20 ' ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG Vinyl Chloride ND 1 0.17 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG Xylenes m,p ND 1 0.11 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG Xylenes o ND 1 0.064 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG 2-Chloroethylvinylether ND 10 2.2 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG 1,1,2-Trichlorotrifluoroethane ND 1 0.19 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:20VRG DQF Flags Definition: U Constituent results were non-detect. J Reported value is estimated;detected at a concentration below the PQL and above the laboratory MDL. ND=Non-Detected.PQL=Practical Quantitation Limit.(Surrogate. Amended Page 5 of 12 ENVIRONMENTAL . AGRICULTURAL Analytical Chemists August 15,2018 Lab ID : SP 1808459-002 - Customer ID : 2-11369 South Tahoe Public Utility District 1275 Meadow Crest Drive Sampled On : June 26, 2018-09:36 South Lake Tahoe, CA 96150 Sampled By : Not Available Received On : June 27, 2018-11:54 Matrix : Waste Water Description : HPR Project : AG62051 Sample Result-Organic Constituent Result PQL MDL Units Dilution DQF Sample Preparation Sample Analysis Method ID Time Method ID Time EPA 8260 4-Bromofluorobenzene 80.6 78-123 % 1 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG Dibromofluoromethane' 84.3 65-125 % 1 503013 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG_ 1,2-Dichloroethane-d4= 84.0 58-144 % 1 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG Toluene-d81 97.5 92-107 % 1 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG Acetone ND 10 1.7 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG Benzene ND 1 0.088 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG Bromobenzene ND 1 0.054 ug/L 1 U 503013 207497 06/28/18 06:00 8260B 209698-GM214 06128/18-19:50VRG Bromochloromethane ND 1 0.046 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG Bromodichloromethane ND 1 0.067 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG Bromoform ND 1 0.055 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG Bromomethane ND 1 0.12 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG tert-Butanol ND 5 0.48 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG 2-Butanone(MEK) ND 10 2.2 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG n-Butylbenzene ND 1 0.13 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG sec-Butylbenzene ND 1 0.097 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG tert-Butylbenzene ND 1 0.097 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG Carbon Disulfide ND 1 6.8 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG Carbon Tetrachloride ND 1 0.18 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:5OVRG Chlorobenzene ND 1 0.066 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG Chloroethane ND 1 0.29 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG Amended Page 6 of 12 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 August 15, 2018 Lab ID : SP 1808459-002 South Tahoe Public Utility District Description : HPR Sample Result-Organic Constituent Result PQL MDL Units Dilution DQF Sample Preparation Sample Analysis Method ID Time Method ID Time EPA 8260 Chloroform ND 1 0.088 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG Chloromethane ND 1 0.097 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG 2-Chlorotoluene ND 1 0.072 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG 4-Chlorotoluene ND 1 0.15 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG 1,2-Dibromo-3-chloropropane ND 1 0.13 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG Dibromochloromethane ND 2 0.060 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG Dibromomethane ND 1 0.048 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:5OVRG 1,2-Dichlorobenzene ND 1 0.18 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG 1,3-Dichlorobenzene ND 1 0.061 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG 1,4-Dichlorobenzene ND 1 0.24 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG Dichlorodifluoromethane ND 1 0.23 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG 1,1-Dichloroethane ND 1 0.13 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG 1,2-Dichloroethane ND 1 0.065 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG 1,1-Dichloroethylene ND 1 0.17 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG cis-1,2-Dichloroethylene ND 1 0.13 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG trans-1,2-Dichloroethylene ND 1 0.22 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG 1,2-Dichloropropane ND 1 0.089 - ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG 1,3-Dichloropropane ND 1 0.049 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG 2,2-Dichloropropane ND 1 0.11 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG 1,1-Dichloropropene ND 1 0.14 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG Di-isopropyl ether(DIPE) ND 0.5 0.051 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG Ethyl Benzene ND 1 0.099 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG Ethyl tert-butyl ether(ETBE) ND 0.5 0.051 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG Hexachlorobutadiene ND 1 0.17 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG 2-Hexanone ND 10 2.4 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG Isopropylbenzene ND 1 0.037 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG p-Isopropyltoluene ND 1 0.095 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG Methyl tert-butyl ether(MTBE) ND 0.2 0.036 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG 4-Methyl-2-pentanone(MIBK) ND 10 0.58 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG Methylene Chloride ND 1 0.065 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG Amended Page 7 of 12 August 15, 2018 Lab ID : SP 1808459-002 South Tahoe Public Utility District Description : HPR Sample Result-Organic Constituent Result PQL MDL Units Dilution DQF Sample Preparation Sample Analysis Method ID Time Method ID Time EPA 8260 Naphthalene ND 1 0.13 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG n-Propylbenzene ND 1 0.089 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG Styrene 1, ND 1 0.061 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG tert-Amyl methyl ether(TAME) ND 0.5 0.037 ug/L 1 U 5030B 207497 06/28/18 06:00 . 8260B 209698-GM214 06/28/18-19:50VRG 1,1,1,2-Tetrachloroethane ND 1 0.099 ug/L 1 U 5030B 207497 06/28/18 06:00 826013 209698-GM214 06/28/18-19:50VRG 1,1,2,2-Tetrachloroethane ND 1 0.12 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG Tetrachloroethylene ND 1 0.31 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG Toluene ND 1 0.11 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG 1,2,3-Trichlorobenzene ND 1 0.13 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG 1,2,4-Trichlorobenzene ND 1 0.16 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG 1,1,1-Trichloroethane ND 1 0.14 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG 1,1,2-Trichloroethane ND 1 0.058 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG Trichloroethylene ND 1 0.13 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG Trichlorofluoromethane ND 1 0.13 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG 1,2,3-Trichloropropane ND 1 0.095 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG 1,2,4-Trimethylbenzene ND 1 0.076 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG 1,3,5-Trimethylbenzene ND 1 0.10 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG Vinyl Acetate ND 100 20 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG Vinyl Chloride ND 1 0.17 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG Xylenes m,p ND 1 0.11 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG Xylenes o ND 1 0.064 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG 2-Chloroethylvinylether ND 10 2.2 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG 1,1,2-Trichlorotrifluoroethane ND 1 0.19 ug/L 1 U 5030B 207497 06/28/18 06:00 8260B 209698-GM214 06/28/18-19:50VRG DQF Flags Definition: U Constituent results were non-detect. ND=Non-Dctected.PQL=Practical Quantitation Limit.tSurrogate. Amended Page 8 of 12 iiNiffi ENVIRONMENTAL �:_ AGRICULTURAL Analytical Chemists August 15,2018 Lab ID : SP 1808459 South Tahoe Public Utility District Customer : 2-11369 Quality Control- Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,1,1,2-Tetrachloroethane 5030B 06/28/I8:207497VRG Blank ug/L ND <0.5 1,1,1-Trichloroethane(TCA) 5030B 06/28/18:207497VRG Blank ug/L ND <0.5 1,1,2,2-Tetrachloroethane 5030B 06/28/18:207497VRG Blank ug/L ND <0.5 1,1,2-Trichloroethane 5030B 06/28/18:207497VRG Blank ug/L ND <0.5 1,1,2-Trichlorotrifluoroethane 5030B 06/28/18:207497VRG Blank ug/L ND <1 1,1-Dichloroethane 5030B 06/28/18:207497VRG Blank ug/L ND <0.5 1,1-Dichloroethylene 5030B 06/28/18:207497VRG Blank ug/L ND <0.5 LCS ug/L 25.00 58.5% 52-137 MS ug/L 25.00 61.3% 25-179 (SP 1808459-001) MSD ug/L 25.00 99.0% 25-179 MSRPD ug/L 25.00 47.0% <26 435 1,1-Dichloropropene 5030B 06/28/18:207497VRG Blank ug/L ND <0.5 1,2,3-Trichlorobenzene 5030B 06/28/18:207497VRG Blank ug/L ND <0.5 1,2,3-Trichloropropane 5030B 06/28/18:207497VRG Blank ug/L ND <1 1,2,4-Trichlorobenzene 5030B 06/28/18:207497VRG Blank ug/L ND <0.5 1,2,4-Trimethylbenzene 5030B 06/28/18:207497VRG Blank ug/L ND <0.5 1,2-Dichlorobenzene 5030B 06/28/18:207497VRG Blank ug/L ND <0.5 1,2-Dichloroethane(EDC) 5030B 06/28/18:207497VRG Blank ug/L ND <0.5 1,2-Dichloroethane-d4 5030B 06/28/18:207497VRG Blank ug/L 25.00 93.6% 58-144 LCS ug/L 25.00 83.5% 58-144 MS ug/L 25.00 89.2% 58-144 (SP 1808459-001) MSD ug/L 25.00 89.2% ,58-144 MSRPD ug/L 25.00 0.08% <20.0 1,2-Dichloropropane 5030B 06/28/18:207497VRG Blank ug/L ND <0.5 1,3,5-Trimethylbenzene 5030B 06/28/18:207497VRG Blank ug/L ND <0.5 ' 1,3-Dichlorobenzene 5030B 06/28/18:207497VRG Blank ug/L ND <0.5 1,3-Dichloropropane 5030B 06/28/18:207497VRG Blank ug/L ND <0.5 1,4-Dichlorobenzene 5030B 06/28/18:207497VRG Blank ug/L ND <0.5 2,2-Dichloropropane 5030B 06/28/18:207497VRG Blank ug/L ND <0.5 2-Butanone(MEK) 5030B 06/28/18:207497VRG Blank ug/L ND <10 2-Chloroethylvinyl ether 5030B 06/28/18:207497VRG Blank ug/L ND <10 2-Chlorotoluene 5030B 06/28/I8:207497VRG Blank ug/L ND <0.5 2-Hexanone 5030B 06/28/18:207497VRG Blank ug/L ND <10 4-Bromofluorobenzene 5030B 06/28/18:207497VRG Blank ug/L 25.00 80.9% 78-123 LCS ug/L 25.00 80.5% 78-123 MS ug/L 25.00 82.5% 78-123 (SP 1808459-001) MSD ug/L 25.00 78.9% 78-123 MSRPD ug/L 25.00 4.5% <20.0 4-Chlorotoluene 5030B 06/28/18:207497VRG Blank ug/L ND <0.5 4-Methyl-2-pentanone(MIBK) 5030B 06/28/18:207497VRG Blank ug/L ND <10 Acetone 5030B 06/28/18:207497VRG Blank ug/L ND <50 Benzene 5030B 06/28/18:207497VRG Blank ug/L ND <0.5 LCS ug/L 25.00 96.2% 60-134 MS ug/L 25.00 103% 47-169 (SP 1808459-001) MSD ug/L 25.00 161% 47-169 MSRPD ug/L 25.00 43.6% <24 435 Bromobenzene 5030B 06/28/18:207497VRG Blank ug/L ND <0.5 Bromochloromethane 5030B 06/28/18:207497VRG Blank ug/L ND <0.5 Bromodichloromethane 5030B 06/28/18:207497VRG Blank ug/L ND <0.5 Bromoform 5030B 06/28/18:207497VRG Blank ug/L ND <0.5 Bromomethane(Methyl Bromide) 5030B 06/28/18:207497VRG Blank ug/L ND <0.5 Carbon Disulfide 5030B 06/28/18:207497VRG Blank ug/L ND <10 Carbon Tetrachloride 5030B 06/28/18:207497VRG Blank ug/L ND <1 Chlorobenzene 5030B 06/28/18:207497VRG Blank ug/L ND <0.5 LCS ug/L 25.00 122% 56-152 Ainr nded Page 9 of 12 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 i August 15, 2018 Lab ID : SP 1808459 South.Tahoe Public Utility District Customer : 2-11369 Quality Control- Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Chlorobenzene 5030B MS ug/L 25.00 122% 31-212 (SP 1808459-001) MSD ug/L 25.00 207% 31-212 MSRPD ug/L 25.00 51.4% <27 435 Chloroethane(Ethyl Chloride) 5030B 06/28/18:207497VRG Blank ug/L ND <1 Chloroform 5030B 06/28/18:207497VRG. Blank ug/L ND <1 Chloromethane(Methyl Chloride) 5030B 06/28/18:207497VRG Blank ug/L ND <0.5 cis-1,2-Dichloroethylene 5030B 06/28/18:207497VRG Blank ug/L ND <0.5 DBCP 5030B 06/28/18:207497VRG Blank ug/L ND <5 Dibromochloromethanc 5030B 06/28/I8:207497VRG Blank ug/L ND <1 Dibromofluromethane 5030B 06/28/18:207497VRG Blank ug/L 25.00 82.0% 65-125 LCS ug/L 25.00 84.7% 65-125 MS ug/L 25.00 83.8% 65-125 (SP 1808459-001) MSD ug/L 25.00 85.3% 65-125 ' MSRPD ug/L 25.00 1.8% <20.0 Dibromomethane 5030B 06/28/18:207497VRG Blank ug/L ND <0.5 Dichlorodifluoromethane 5030B 06/28/18:207497VRG Blank ug/L ND <0.5 Dichloromethane 5030B 06/28/18:207497VRG Blank ug/L ND <0.5 Ethyl tert-Butyl Ether 5030B 06/28/18:207497VRG Blank ug/L ND <2 Ethylbenzene 5030B 06/28/18:207497VRG Blank ug/L ND <0.5 Freon-11 5030B 06/28/18:207497VRG Blank ug/L ND <1 Hexachlorobutadiene 5030B 06/28/18:207497VRG Blank ug/L ND <0.5 Isopropyl Ether 5030B 06/28/18:207497VRG Blank ug/L ND <5 Isopropylbenzene 5030B 06/28/18:207497VRG Blank ug/L ND <0.5 Methyl tert-Butyl Ether(MTBE) 5030B 06/28/18:207497VRG Blank ug/L ND <2 Naphthalene 5030B 06/28/18:207497VRG Blank ug/L ND <0.5 n-Butylbenzene 5030B 06/28/18:207497VRG Blank ug/L ND <0.5 n-Propylbenzene 5030B 06/28/18:207497VRG Blank ug/L , ND <0.5 p-Isopropyltoluene 5030B 06/28/18:207497VRG Blank ug/L ND <0.5 sec-Butylbenzene 5030B 06/28/18:207497VRG Blank ug/L ND <0.5 Styrene 5030B 06/28/18:207497VRG Blank ug/L ND <0.5 TAME 5030B 06/28/18:207497VRG Blank ug/L ND <5 tert-Butanol 5030B 06/28/18:207497VRG Blank ug/L ND <5 tert-Butylbenzene 5030B 06/28/18:207497VRG Blank ug/L ND <0.5 Tetrachloroethylene(PCE) ' 5030B 06/28/I8:207497VRG Blank ug/L ND <0.5 Toluene 5030B 06/28/18:207497VRG Blank ug/L • ND <0.5 LCS ug/L 25.00 92.4% 56-131 MS ug/L 25.00 98.7% 44-164 (SP 1808459-001) MSD ug/L 25.00 151% 44-164 MSRPD ug/L 25.00 42.2% <30 435 Toluene-d8 5030B 06/28/18:207497VRG Blank ug/L 25.00 103% 92-107 LCS ug/L 25.00 99.9% 92-107 MS ug/L 25.00 99.2% 92-107 (SP 1808459-001) MSD ug/L 25.00 99.9% 92-107 MSRPD ug/L 25.00 ,0.7% <20 trans-1,2-Dichloroethylene 5030B 06/28/18:207497VRG Blank ug/L ND <0.5 Trichloroethylene(TCE) 5030B 06/28/18:207497VRG Blank ug/L ND <0.5 LCS ug/L 25.00 81.0% 61-123 MS ug/L 25.00 86.0% 41-167 (SP 1808459-001) MSD ug/L 25.00 137% 41-167 MSRPD ug/L 25.00 45.9% <32 435 Vinyl Acetate 5030B 06/28/18:207497VRG Blank ug/L ND <10 _ Vinyl Chloride 5030B 06/28/18:207497VRG Blank ug/L ND <0.5 Xylenes m,p 5030B 06/28/18:207497VRG Blank ug/L ND <2 Xylenes o 5030B 06/28/18:207497VRG Blank ug/L ND <2 Amended Page 10 of 12 August 15, 2018 Lab ID : SP 1808459 South Tahoe Public Utility District Customer : 2-11369 Quality Control- Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,1,1,2-Tetrachloroethane 8260B 06/28/18:209698VRG. CCV ug/L 25.00 109% 70-130 1,1,1-Trichloroethane(TCA) 8260B 06/28/18:209698VRG CCV ug/L 25.00 102% 70-130 1,1,2,2-Tetrachloroethane 8260B 06/28/18:209698VRG CCV ug/L 25.00 121% 70-130 1,1,2-Trichloroethane 8260B 06/28/18:209698VRG CCV ug/L 25.00 128% 70-130 1,1-Dichloroethane 8260B 06/28/18:209698VRG CCV ug/L ' 25.00 85.6% 70-130 1,1-Dichloroethylene 8260B 06/28/18:209698VRG CCV ug/L 25.00 90.1% 80-120 1,1-Dichloropropene 8260B 06/28/18:209698VRG CCV ug/L 25.00 124% 70-130 1,2,3-Trichlorobenzene 8260B 06/28/18:209698VRG CCV ug/L 25.00 421% 70-130 360 1,2,3-Trichloropropane 8260B 06/28/18:209698VRG CCV ug/L 25.00 114% 70-130 1,2,4-Trichlorobenzene 8260B 06/28/18:209698VRG CCV ug/L 25.00 268% 70-130 360 1,2,4-Trimethylbenzene 8260B 06/28/18:209698VRG CCV ug/L 25.00 96.8% 70-130 1,2-Dichlorobenzene 8260B 06/28/18:209698VRG CCV ug/L 25.00 125% 70-130 1,2-Dichloroethane(EDC) 8260B 06/28/18:209698VRG CCV ug/L 25.00 102% 70430 1,2-Dichloroethane-d4 8260B 06/28/18:209698VRG CCV ug/L 25.00 92.1% 70-130 1,2-Dichloropropane 8260B 06/28/18:209698VRG CCV ug/L 25.00 120% 80-120 1,3,5-Trimethylbenzene 8260B 06/28/18:209698VRG CCV ug/L 25.00 95.9% 70-130 1,3-Dichlorobenzene 8260B 06/28/18:209698VRG CCV ug/L 25.00 129% 70-130 1,3-Dichloropropane 8260B 06/28/18:209698VRG CCV ug/L 25.00 107% 70-130 1,4-Dichlorobenzene 8260B 06/28/18:209698VRG CCV ug/L 25.00 134% 70-130 360 2,2-Dichloropropane 8260B 06/28/18:209698VRG CCV ug/L 25.00 75.4% 70-130 2-Chlorotoluene 8260B 06/28/18:209698VRG CCV ug/L 25.00 105% 70-130 4-Bromofluorobenzene(BFB) 8260B 06/28/18:209698VRG CCV ug/L 25.00 80.4% 70-130 4-Chlorotoluene 8260B 06/28/18:209698VRG CCV ug/L 25.00 94.8% 70-130 Benzene 8260B 06/28/18:209698VRG CCV ug/L 25.00 124% 70-130 Bromobenzene 8260B 06/28/18:209698VRG CCV ug/L 25.00 112% 70-130 Bromochloromethane 8260B 06/28/18:209698VRG CCV ug/L 25.00 121% 70-130 Bromodichloromethane 8260B . 06/28/18:209698VRG CCV ug/L 25.00 100% 70-130 Bromoform 8260B 06/28/18:209698VRG CCV ug/L 25.00 104% 70-130 Bromomethane(Methyl Bromide) 8260B 06/28/18:209698VRG CCV ug/L 25.00 95.2% 70-130 Carbon Tetrachloride 8260B 06/28/18:209698VRG CCV ug/L 25.00 95.4% 70-130 Chlorobenzene 8260B 06/28/18:209698VRG CCV ug/L 25.00 115% 70-130 Chloroethane(Ethyl Chloride) 8260B 06/28/18:209698VRG CCV ug/L 25.00 110% 70-130 Chloroform 8260B 06/28/18:209698VRG CCVug/L 25.00 103% 80-120 Chloromethane(Methyl Chloride) 8260B 06/28/18:209698VRG CCV ug/L 25.00 127% 70-130 cis-1,2-Dichloroethylene 8260B 06/28/18:209698VRG CCV ug/L 25.00 82.3% 70-130 DBCP 8260B 06/28/18:209698VRG CCV ug/L 25.00 257% 70-130 360 Dibromochloromethane 8260B 06/28/18:209698VRG CCV ug/L 25.00 94.1% 70-130 Dibromofluromethane 8260B 06/28/18:209698VRG CCV ug/L 25.00 82.3% 70-130 Dibromomethane 8260B 06/28/18:209698VRG CCV ug/L 25.00 125% 70-130 Dichlorodifluoromethane 8260B 06/28/18:209698VRG CCV ug/L 25.00 130% 70-130 Dichloromethane 8260B 06/28/18:209698VRG CCV ug/L 25.00 85.6% 70-130 Ethyl tert-Butyl Ether 8260B 06/28/18:209698VRG CCV ug/L 25.00 104% 50-150 Ethylbenzene 8260B 06/28/18:209698VRG CCV ug/L 25.00 102% 80-120 Hexachlorobutadiene 8260B 06/28/18:209698VRG CCV ug/L , 25.00 158% 70-130 360 Isopropyl Ether 8260B 06/28/18:209698VRG CCV ug/L , 25.00 107% 50-150 Isopropylbenzene 8260B 06/28/18:209698VRG CCV ug/L 25.00 109% 70-130 Methyl tert-Butyl Ether 8260B 06/28/18:209698VRG CCV ug/L 25.00 90.2% 70-130 Naphthalene 8260B 06/28/18:209698VRG CCV ug/L 25.00 374% 70-130 360 n-Butylbenzene 8260B 06/28/18:209698VRG CCV ug/L 25.00 93.3% 70-130 n-Propylbenzene ' 8260B 06/28/18:209698VRG CCV ug/L 25.00 113% 70-130 p-Isopropyltoluene 8260B 06/28/18:209698VRG CCV ug/L 25.00 102% 70-130 sec-Butylbenzene 8260B 06/28/18:209698VRG CCV ug/L 25.00 98.3% 70-130 Styrene 8260B 06/28/18:209698VRG CCV ug/L 25.00 111% 70-130 - Amended Page 11 of 12 August 15, 2018 Lab ID : SP 1808459 South Tahoe Public Utility District Customer : 2-11369 Quality Control-Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note • Organic TAME 8260B 06/28/18:209698VRG CCV ug/L 25.00 126% 50-150 tert-Butanol 8260B 06/28/18:209698VRG CCV ug/L 125.0 115% 50-150 tort-Butylbenzene 8260B 06/28/18:209698VRG CCV ug/L 25.00 114% 70-130 Tetrachloroethylene(PCE) 8260B 06/28/18:209698VRG CCV ug/L 25.00 132% 70-130 360 Toluene 8260B 06/28/18:209698VRG CCV ug/L 25.00 115% 80-120 Toluene-d8 8260B 06/28/18:209698VRG CCV ug/L 25.00 99.0% 70-130 trans-1,2-Dichloroethylene 8260B 06/28/18:209698VRG CCV ug/L 25.00 81.1% 70-130 Trichloroethylene(TCE) 8260B 06/28/18:209698VRG CCV ug/L 25.00 108% 70-130 Trichlorofluoromethane F-11 8260B 06/28/18:209698VRG CCV ug/L 25.00 84.6% 70-130 Trichlorotrifluoroethane F-113 8260B 06/28/18:209698VRG CCV ug/L 25.00 79.8% 70-130 Vinyl Chloride '8260B 06/28/18:209698VRG CCV ug/L 25.00 113% 80-120 Xylene m,p 8260B 06/28/18:209698VRG CCV ug/L 50.00 107% 70-130 Xylenes o 8260B 06/28/18:209698VRG CCV ug/L 25.00 112% 70-130 Definition CCV :Continuing Calibration Verification-Analyzed to verify the instrument calibration is within criteria. Blank :Method Blank-Prepared to verify that the preparation process is not contributing contamination to the samples. LCS :Laboratory Control Standard/Sample-Prepared to verify that the preparation process is not affecting analyte recovery. MS :Matrix Spikes-A random sample is spiked with a known amount of analyte.The recoveries are an indication of how that sample matrix affects analyte recovery. MSD :Matrix Spike Duplicate of MS/MSD pair-A random sample duplicate is spiked with a known amount of analyted.The recoveries are an indication of how that sample matrix affects analyte recovery. MSRPD :MS/MSD Relative Percent Difference(RPD)-The MS relative percent difference is an indication of precision for the preparation and analysis. ND :Non-detect-Result was below the DQO listed for the analyte. DQO :Data Quality.Objective-This is the criteria against which the quality control data is compared. Explanation 360 :CCV above Acceptance Range(AR).Samples which were non detect for this analyte were accepted. 435 :Sample matrix may be affecting this analyte.Data was accepted based on the LCS or CCV recovery. Amended Page 12 of 12 CHAIN OF CUSTODY ISM Li 09 South Tahoe Public Utility District , Lab Sent FGA Preservatives: Turn-Around-Time: 1275 Meadow Crest Drive .' ::-!..,:-N, = •-• VOC-HCI Standard South Lake Tahoe,CA 96150 Sampler(s): D.Trebotich Phone:(530)-543-6231 -+•►.,•In;.w 1:_L. ' 0 NW N 0 d W a Lab ID# Sam !e Site Collection P Date&Time o AG62050 DD-01 Diamond Ditch @ Beginning Start of Diamond Ditch;at HPR 06126/2018 09:23 WW x outlet AG62051 HPR Harvey Place Reservoir @ HPR Outlet 06/2612018 09:36 WW X AG62052 BLANK TRIP Trip Blank 0612612018 00:00 X No • Relinquished by: Received by: ___,,Report MTBE to 0.2 ug1L Analyze Travel aield�Blanks only if VOCs detected in samples. Signature fJ� ✓� "� Signature Use Calif State WriteOn to report&upload results of Potable Water Wells. Print Wore_i frfjocki cA Print Company South Tahoe Public Utility District Company Please Return all STPUD ice chests & Blue Ice Date: 04-1L-1 6 Time: iAQb Date: Time: Comments: l 2825 Relinquished by: . Received by: TRK# 7725 8943 � � Signature Signature Print Print V1-(1 I.C-- Lk ' Company r`' i X, Company . _ Date: I Time:115 __ Date: Time:\\- - Page 1 of 1 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: 1 2. Shipper tracking numbers 772569432825 • 3.Were samples received in a chilled condition? Temps: 4 / 4.Surface water(SWTR)bact samples:A sample that has a temperature upon receipt of>10C,whether iced or not, should be flagged unless the time since sample collection has been less than two hours. 5.Do the number of bottles received agree with the Yes No N/A COC? 6.Verify sample date,time,sampler Yes No N/A 7.Were the samples received intact?(i.e. no broken Yes No bottles, leaks,etc.) 8.Were sample custody seals intact? Yes No N/A Sample Verification, Labeling and Distribution: 1.Were all requested analyses understood and Yes _ No acceptable? 2.Did bottle labels correspond with the client's ID's? Yes No 3.Were all bottles requiring sample preservation Yes No N/A FGL properly preserved? [Exception:Oil&Grease,VOA and 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 receipt? 6.Have rush or project due dates been checked and Yes No N/A accepted? Include a copy of the COC for lab delivery. (Bacti. Inorganics and Radio) Sample Receipt, Login and Verification completed by: Reviewed andDigitally signed by Cynthia T Casarez Cynthia T Casarez to Title:Sample Receiving Approved By Date:06/27/2018-12:14:40 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 1808459 CTC-06/27/2018-12:14:40 Alpine County Summary Report Temp pH EC DO Alk TDS SS Turb Chloride Sulfate ACMW-01AW 04/04/2018 Main Dam 10.7 6.74 53.4 40.8 83 1.27 3.00 ACMW-01BE 04/04/2018 Secondary Dam 7.5 6.76 90.0 47.5 91 1.05 2.66 ACMW-02N 04/04/2018 Access Gate 12.2 6.61 148 67.7 116 1.72 3.46 ACMW-02S 04/04/2018 Access Gate 11.8 6.24 120 60.8 97 1.72 2.89 ACMW-04W 04/04/2018 Gansberg 12.2 6.23 188 46.2 140 15.2 19.0 ACMW-06S 04/04/2018 Celio 13.4 7.47 526 ' 205 368 59.8 25.6 ACMW-08N 06/26/2018 Diamond Valley Ranch 12.4 6.76 180 85.3 125 0.997 1.04 ACMW-09D 05/17/2018 Diamond Valley Ranch 13.4 6.13 81.2 31.6 88 1.44 2.83 ACMW-10 05/17/2018 Diamond Valley Ranch 12.5 6.02 181 82.7 137 4.26 3.83 ACMW-11 05/17/2018 Diamond Valley Ranch 9.2 5.83 91.4 34.2 73 1.85 4.33 ACMW-12 04/25/2018 Diamond Valley Ranch 11.7 6.72 108 48.4 99 1.50 2.66 ACMW-13 04/25/2018 Diamond Valley Ranch 9.0 6.27 120 53.9 140 2.06 3.46 ACMW-14 05/17/2018 Diamond Valley Ranch 10.1 5.18 70.0 23.8 85 0.949 2.36 ACMW-15 06/22/2018 Diamond Valley Ranch 14.2 6.16 63.6 30.1 56 0.680 1.08 ACMW-16 06/22/2018 Diamond Valley Ranch 13.8 6.08 106 , 51.1 84 0.797 2.32 ACMW-17 06/22/2018 Diamond Valley Ranch 12.0 6.47 88.4 35.0 68 2.06 2.52 ACMW-18 06/22/2018 Diamond Valley Ranch 14.9 6.46 76.1 31.3 61 1.23 2.32 ACMW-19 06/22/2018 Diamond Valley Ranch 14.7 6.70 213 104 134 5.44 2.77 ' ACMW-20 04/25/2018 Diamond Valley Rd- 10.3 6.28 92.0 32.7 70 1.50 3.11 _ Paynesville ACMW-21 06/19/2018 River Ranch Rd 10.2 5.90 103 32.3 66 5.40 2.19 ACMW-22 06/19/2018 Fredericksburg Ln 13.3 6.09 108 34.4 75 3.70 2.06 ACMW-23 06/19/2018 Scott Brooke's Ranch by 16.9 7.21 371 171 258 3.91 19.9 Irrigation Ditch ACMW-24 06/19/2018 Scott Brooke's Ranch by 14.9 6.50 698 176 408 79.7 35.2 Irrigation Ditch ACMW-25 06/19/2018 Access road between 14.4 6.32 141 46.9 100 4.95 4.13 Neddenriep&Brooke ranches ACMW-26 06/19/2018 Access road between 16.0 6.36 184 65.0 121 12.0 4.48 Neddenriep&Brooke ranches CONTROL 04/18/2018 East side near Post Office 10.1 7.09 248 18.9 GW-05 05/17/2018 Neddenriep 12.3 5.85 271 60.6 169 25.6 9.87 GW-08 05/17/2018 Arant Ranch house 14.0 5.51 306 48.9 192 35.4 13.7 GW-11 04/25/2018 Diamond Valley School 14.0 6.99 138 68.1 128 0.800 0.706 GW-17 04/25/2018 Diamond Valley Ranch House 13.2 6.36 132 ' 60.8 107 1.73 2.06 Well HPR 04/03/2018 Harvey Place Reservoir 9.2 7.45 540 9.45 151 226 2.58 1.8 48.1 15.0 05/10/2018 Harvey Place Reservoir 14.7 7.03 516 9.59 148 230 2.53 1.7 51.6 14.4 05/29/2018 Harvey Place Reservoir 18.1 8.31 491 11.33 06/07/2018 Harvey Place Reservoir 17.6 8.12 498 6.43 139 234 5.75 3.8 51.0 14.1 HVC-1 04/18/2018 HVC @ Pioneer Trail 2.5 7.42 49.0 0.887 • 05/15/2018 HVC @ Pioneer Trail 11.1 7.00 38.0 1.07 . 06/14/2018 HVC @ Pioneer Trail 9.4 6.75 31.0 0.658 HVC-2 '04/18/2018 HVC 250'Upstream Pond#2 3.3 6.86 49.5 1.44 05/15/2018 HVC 250'Upstream Pond#2 10.9 6.62 38.7 1.12 Results resported as mg/L except EC as uSlcm Turbidity as NTU Colifoms as MPN/100mL Temp as C NC=Not counted Page 1 of 8 Alpine County Summary Report Temp pH EC DO Alk TDS SS Turb Chloride Sulfate HVC-2 06/14/2018 HVC 250'Upstream Pond#2 13.0 6.47 35.0 0.644 HVC-3 04/18/2018 HVC 25'Downstream of 2.8 7.01 52.2 1.68 Meadow Crest 05/15/2018 HVC 25'Downstream of 7.5 6.57 38.3 1.15 Meadow Crest 06/14/2018 HVC 25'Downstream of 12.9 6.67 37.0 0.652 Meadow Crest MW01 5 04/18/2018 SW corner of ERB 9.4 7.45 162 2.25 MW02-50 04/18/2018 South side of ERB Pond 10.2 6.81 304 33.9 MW03-50 04/18/2018 Southwest corner of ERB Pond 9.8 6.28 540 119 MW04-50 04/18/2018 Hank Monk side of ERB 8.1 6.10 101 9.62 MW07-50 04/18/2018 North side of ERB Pond 7.6 7.78 179 11.3 MW08-25 04/18/2018 South of Pond 1 8.4 6.39 329 11.6 MW11 04/18/2018 North of Biosolids building 9.3 6.10 246 35.3 MW12 04/18/2018 South of Biosolids Building 11.6 6.60 648 27.4 MW13 04/18/2018 South of Pond 2 along HVC 5.8 7.02 639 16.4 SW-01 04/03/2018 Carson River Woodfords 2.2 7.82 54.6 11.10 26.7 47 8.93 3.6 1.44 1.07 05/10/2018 Carson River Woodfords 6.9 7.76 35.0 11.30 23.4 38 6.04 2.5 0.915 1.51 06/07/2018 Carson River Woodfords 11.2 8.40 51.2 9.33 25.2 50 3.06 1.7 0.671 1.11 SW-02 04/03/2018 Indian Creek Upper 5.6 7.73 85.4 10.30 43.0 77 0.69 2.6 0.968 <0.50 05/10/2018 Indian Creek Upper 13.1 7.92 106 8.02 52.9 83 1.54 2.0 1.23 1.05 06/07/2018 Indian Creek Upper 9.4 7.58 109 6.94 55.7 91 0.35 1.6 0.869 <0.50 SW-03 04/03/2018 Indian Creek Mid 7.8 6.39 95.3 9.81 45.7 83 6.35 4.4 1.31 1.23 05/10/2018 Indian Creek Mid 14.3 7.64 87.0 9.40 43.8 76 10.4 3.1 1.31 ' 1.69 06/07/2018 Indian Creek Mid 17.6 7.51 103 7.74 50.7 90 3.36 2.8 7.02 7.33 SW-04 04/03/2018 Indian Creek Lower 10.0 6.69 96.7 9.64 52.3 88 11.1 7.9 1.56 2.09 05/10/2018 Indian Creek Lower 16.6 7.84 81.0 8.58 40.8 75 21.2 7.4 1.20 2.00 06/07/2018 Indian Creek Lower 17.1 7.63 79.3 7.91 38.6 84 30.2 13 0.938 1.47 SW-05 04/03/2018 Carson River Paynesville 7.8 7.76 59.3 11.40 27.7 50 8.39 3.4 1.51 1.16 05/10/2018 Carson River Paynesville 6.8 7.68 46.0 11.60 23.8 44 7.51 3.0 0.960 1.53 06/07/2018 Carson River Paynesville 10.7 7.12 57.4 9.62 28.6 59 4.01 2.0 0.786 1.24 SW-06 04/03/2018 Carson River Stateline 5.2 7.65 57.7 . 11.00 26.5 51 8.41 4.2 1.55 1.19 05/10/2018 Carson River Stateline 7.3 7.75 48.0 11.10 24.4 44 8.14 3.7 0.986 1.55 06/07/2018 Carson River Stateline 11.4 7.40 61.8 9.61 29.8 62 4.19 2.5 0.957 1.35 SW-07 06/07/2018 Fredericksburg Ditch 15.5 7.55 128 7.96 62.0 106 1.9 2.8 1.84 1.81 SW-08 04/03/2018 Irrigation Ditch 12.5 7.29 132 8.08 47.9 134 1.62 0.90 3.22 8.52 Results resported as mg/L except EC as uS/cm Turbidity as NTU Colifoms as MPN/100mL Temp as C NC=Not counted Page 2 of 8 'Alpine County Summary Report Total P Total P PO4-P NH3-N Total N NO2-N NO3-N TKN Dissolved ACMW-01AW 04/04/2018 Main Dam 0.027 0.027 0.020 <0.020 0.184 <0.010 0.183 <0.07 ACMW-01 BE 04/04/2018 Secondary Dam 0.033 0.033 0.027 <0.020 0.254 <0.010 0.257 <0.07 ACMW-02N 04/04/2018 Access Gate 0.026 0.026 0.020 <0.020 1.13 <0.010 1.21 <0.07 ACMW-02S 04/04/2018 Access Gate 0.027 0.027 0.019 <0.020 0.957 <0.010 1.01 <0.07 ACMW-04W 04/04/2018 Gansberg 0.023 0.023 0.018 <0.020 2.02 <0.010 2.17 <0.07 ACMW-06S 04/04/2018 Celio 0.098 0.098 0.100 <0.020 0.190 <0.010 0.084 0.106 ACMW-08N 06/26/2018 Diamond Valley Ranch 0.044 0.037 <0.020 <0.010 0.758 0.696 0.062 ACMW-09D 05/17/2018 Diamond Valley Ranch 0.057 0.066 <0.020 1.47 ,<0.010 1.42 <0.080 ACMW-10 05/17/2018 Diamond Valley Ranch 0.041 0.056 <0.020 0.564 <0.010 0.442 0.122 ACMW-11 05/17/2018 Diamond Valley Ranch 0.015 0.035 <0.020 1.28 <0.010 1.21 <0.080 ACMW-12 04/25/2018 Diamond Valley Ranch 0.035 0.029 <0.020 0.365 <0.010 0.397 <0.050 ACMW-13 04/25/2018 Diamond Valley Ranch 0.023 0.019 <0.020 0.878 <0.010 0.928 <0.050 ACMW-14 05/17/2018 Diamond Valley Ranch 0.024 0.035 <0.020 1.83 <0.010 1.62 0.210 ACMW-15 06/22/2018 Diamond Valley Ranch0.037 0.030 <0.020 0.122 <0.010 0.051 0.071 ACMW-16 06/22/2018 Diamond Valley Ranch 0.045 0.038 <0.020 0.368 <0.010 0.271 0.097 ACMW-17 06/22/2018 Diamond Valley Ranch 0.026 0.022 <0.020 0.852 <0.010 0.746 0.106 ACMW-18 06/22/2018 Diamond Valley Ranch 0.033 0.027 <0.020 0.892 <0.010 0.801 0.091 ACMW-19 06/22/2018 Diamond Valley Ranch 0.093 0.074 0.050 0.190 <0.010 <0.010 0.190 ACMW-20 04/25/2018 Diamond Valley Rd- 0.057 0.047 <0.020 1.53 <0.010 1.62 <0.050 Paynesville ACMW-21 06/19/2018 River Ranch Rd 0.066 0.059 <0.020 1.43 <0.010 1.34 0.090 ACMW-22 06/19/2018 Fredericksburg Ln 0.021 0.017 <0.020 2.24 <0.010 2.03 0.210 ACMW-23 06/19/2018 Scott Brooke's Ranch by 0.041 0.034 <0.020 1.08 <0.010 1.05 <0.050 Irrigation Ditch ACMW-24 06/19/2018 Scott Brooke's Ranch by 0.071 0.063 <0.020 1.69 <0.010 1.44 0.250 Irrigation Ditch ACMW-25 06/19/2018 Access road between 0.056 0.050 <0.020 2.05 0.010 1.77 0.280 Neddenriep&Brooke ranches ACMW-26 06/19/2018 Access road between 0.119 0.111 <0.020 0.634 0.019 0.305 0.310 Neddenriep&Brooke ranches CONTROL 04/18/2018 East side near Post Office <0.010 5.15 GW-05 05/17/2018 Neddenriep 0.038 0.053 <0.020 4.14 <0.010 3.85 0.29 GW-08 05/17/2018 Arant Ranch house 0.041 0.051 <0.020 6.55 <0.010 6.35 0.20 GW-11 04/25/2018 Diamond Valley School 0.044 0.029 <0.020 0.430 <0.010 0.479 <0.050 GW-17 04/25/2018 Diamond Valley Ranch House 0.015 <0.010 <0.020 0.869 <0.010 1.08 <0.050 Well HPR 04/03/2018 Harvey Place Reservoir 2.37 2.43 22.5 25.1 0.258 0.840 24.0 05/10/2018 Harvey Place Reservoir 2.35 2.30 18.6 20.9 0.272 0.813 19.8 06/07/2018 Harvey Place Reservoir 2.36 2.46 17.6 21.1 0.394 0.811 19.9 HVC-1 04/18/2018 HVC @ Pioneer Trail <0.020 0.094 <0.010 0.020 0.094 05/15/2018 HVC @ Pioneer Trail <0.020 0.146 <0.010 0.025 0.121 06/14/2018 HVC @ Pioneer Trail <0.020 0.116 <0.010 <0.010 0.116 HVC-2. 04/18/2018 HVC 250'Upstream Pond#2 <0.020 0.189 <0.010 <0.010 0.189 05/15/2018 HVC 250'Upstream Pond#2 <0.020 0.232 <0.010 0.023 0.209 06/14/2018 HVC 250'Upstream Pond#2 <0.020 0.194 <0.010 <0.010 0.194 Results resported as mg/L except EC as uSlcm Turbidity as NTU Colitoms as MPN/100mL Temp as C NC=Not counted Page 3 of 8 Alpine County Summary Report Total P Total P PO4-P NH3-N Total N NO2-N NO3-N TKN Dissolved HVC-3 04/18/2018 HVC 25'Downstream of <0.020 0.168 <0.010 <0.010 0.168 Meadow Crest 05/15/2018 HVC 25'Downstream of <0.020 0.215 <0.010 0.021 0.194 Meadow Crest 06/14/2018 HVC 25'Downstream of <0.020 0.206 <0.010 <0.010 0.206 Meadow Crest MW01 5 04/18/2018 SW corner of ERB <0.010 0.465 MW02-50 04/18/2018 South side of ERB Pond <0.010 3.25 MW03-50 04/18/2018 Southwest corner of ERB Pond <0.010 0.819 MW04-50 04/18/2018 Hank Monk side of ERB <0.010 0.078 MW07-50 04/18/2018 North side of ERB Pond <0.010 0.457 MW08-25 04/18/2018 South of Pond 1 <0.010 <0.010 MW11 04/18/2018 North of Biosolids building <0.010 0.051 MW12 04/18/2018 South of Biosolids Building 0.015 5.42 MW13 04/18/2018 South of Pond 2 along HVC <0.010 3.11 SW-01 04/03/2018 Carson River Woodfords 0.035 <0.010 <0.020 0.151 <0.010 <0.010 0.151 05/10/2018 Carson River Woodfords 0.026 0.025 <0.020 0.120 <0.030 ' 0.023 0.097 06/07/2018 Carson River Woodfords 0.021 0.010 0.152 <0.010 <0.010 0.152 SW-02 04/03/2018 Indian Creek Upper 0.026 0.014 <0.020 0.167 <0.010 <0.010 0.167 05/10/2018 Indian Creek Upper 0.030 0.031 <0.020 0.144 <0.030 0.021 0.123 06/07/2018 Indian Creek Upper 0.021 0.011 0.163 <0.010 <0.010 0.163 SW-03 04/03/2018 Indian Creek Mid 0.049 0.017 <0.020 0.206 <0.010 0.046 0.160 05/10/2018 Indian Creek Mid 0.060 0.033 <0.020 0.180 <0.030 0.044 0.136 06/07/2018 Indian Creek Mid 0.047 0.084 0.211 <0.010 0.252 <0.050 SW-04 04/03/2018 Indian Creek Lower 0.062 0.016 <0.020 0.294 <0.010 0.085 0.209 05/10/2018 Indian Creek Lower 0.101 0.040 <0.020 0.360 <0.030 0.038 0.322 06/07/2018 Indian Creek Lower 0.120 0.021 0.567 <0.010 0.036 0.531 SW-05 04/03/2018 Carson River Paynesville 0.032 <0.010 <0.020 0.168 <0.010 <0.010 0.168 05/10/2018 Carson River Paynesville 0.032 0.025 <0.020 0.109 <0.030 0.025 0.084 06/07/2018 Carson River Paynesville 0.027 0.010 0.166 <0.010 <0.010 0.166 SW-06 04/03/2018 Carson River Stateline 0.035 <0.010 <0.020 0.203 <0.010 0.013 0.190 05/10/2018 Carson River Stateline 0.034 0.025 <0.020 0.143 <0.030 0.028 0.115 06/07/2018 Carson River Stateline 0.028 <0.010 0.193 <0.010 0.024 0.169 SW-07 06/07/2018 Fredericksburg Ditch 0.131 0.040 0.557 <0.010 0.028 0.529 SW-08 04/03/2018 Irrigation Ditch 0.066 0.015 <0.020 1.45 <0.010 <0.010 1.45 Results resported as mg/L except EC as uSlcm Turbidity as NTU Colifoms as MPN/100mL Temp asC NC=Not counted Page 4 of 8 Alpine County Summary Report BOD Ca Mg Na K SAR %Na HPR 04/03/2018 Harvey Place Reservoir 4.82 18.4 4.32 46.1 10.8 2.51 56.4 05/10/2018 Harvey Place Reservoir 10.2 18.0 4.29 45.0 10.0 2.47 56.5 06/07/2018 Harvey Place Reservoir 11.8 19.1 4.46 47.8 11.1 2.56 56.4 Results resported as mg/L except EC as uS/cm Turbidity as NTU Colifoms as MPN/100mL Temp as C NC=Not counted Page 5 of 8 Alpine County Summary Report Total E.Coli Coliform Chromo Chromo ACMW-01AW 04/04/2018 Main Dam <1 <1 ACMW-01BE 04/04/2018 Secondary Dam <1 <1 ACMW-02N 04/04/2018 Access Gate <1 <1 ACMW-02S 04/04/2018 Access Gate 1.0 <1 ACMW-04W 04/04/2018 Gansberg <1 <1 ACMW-06S 04/04/2018 Celio <1 <1 ACMW-08N 06/26/2018 Diamond Valley Ranch <1 <1 ACMW-09D 05/17/2018 Diamond Valley Ranch 6.3 <1 ACMW-10 05/17/2018 Diamond Valley Ranch <1 <1 ACMW-11 05/17/2018 Diamond Valley Ranch <1 <1 ACMW-12 04/25/2018 Diamond Valley Ranch <1 <1 ACMW-13 04/25/2018 Diamond Valley Ranch <1 <1 ACMW-14 05/17/2018 Diamond Valley Ranch 488.4 <1 ACMW-15 06/22/2018 Diamond Valley Ranch 2.0 1.0 ACMW-16 06/22/2018 Diamond Valley Ranch <1 <1 • ACMW-17 06/22/2018 Diamond Valley Ranch <1 <1 ACMW-18 06/22/2018 Diamond Valley Ranch <1 <1 ACMW-19 06/22/2018 Diamond Valley Ranch <1 <1 ACMW-20 04/25/2018 Diamond Valley Rd- <1 <1 Paynesville ACMW-21 06/19/2018 River Ranch Rd 2.0 <1 ACMW-22 06/19/2018 Fredericksburg Ln 3.1 <1 ACMW-23 06/19/2018 Scott Brooke's Ranch by <1 <1 Irrigation Ditch ACMW-24 06/19/2018 Scott Brooke's Ranch by <1 <1 Irrigation Ditch ACMW-25 06/19/2018 Access road between 150.0 1.0 Neddenriep&Brooke ranches ACMW-26 06/19/2018 Access road between 12.1 1.0 Neddenriep&Brooke ranches GW-05 05/17/2018 Neddenriep <1 <1 GW-08 05/17/2018 Arant Ranch house <1 <1 GW-11 04/25/2018 Diamond Valley School <1 <1 GW-17 04/25/2018 Diamond Valley Ranch House <1 <1 Well HPR 04/03/2018 Harvey Place Reservoir 517.2 <1 05/10/2018 Harvey Place Reservoir 1725 19.7 06/07/2018 Harvey Place Reservoir >24192 48.7 SW-01 04/03/2018 Carson River Woodfords 111.9 <1 05/10/2018 Carson River Woodfords 51.2 1.0 06/07/2018 Carson River Woodfords 261.3 2.0 Results resported as mg/L except EC as uS/cm Turbidity as NTU . Colifoms as MPN/100mL Temp as C NC=Not counted Page 6 of 8 Alpine County Summary Report Total E.Coli Coliform Chromo Chromo SW-02 04/03/2018 Indian Creek Upper 139.6 <1 05/10/2018 Indian Creek Upper 387.3 77.1 06/07/2018 Indian Creek Upper 436.0 22.6 SW-03 04/03/2018 Indian Creek Mid 165.8 <1 05/10/2018 Indian Creek Mid 461.1 30.9 06/07/2018 Indian Creek Mid 749 290.9 SW-04 04/03/2018 Indian Creek Lower 204.6 1.0 05/10/2018 Indian Creek Lower 3255 110 06/07/2018 Indian Creek Lower 11199 360.9 SW-05 04/03/2018 Carson River Paynesville 95.9 3.0 05/10/2018 Carson River Paynesville 325.5 18.5 06/07/2018 Carson River Paynesville 1203.3 488.4 SW-06 04/03/2018 Carson River Stateline 139.6 3.1 05/10/2018 Carson River Stateline 387.3 55.6 06/07/2018 Carson River Stateline 1553.1 517.2 SW-07 06/07/2018 Fredericksburg Ditch 2682 387.3 SW-08 04/03/2018 Irrigation Ditch 261.3 2.0 Results resported as mg/L except EC as uS/cm Turbidity as NTU Colifoms as MPN/100mL Temp as C NC=Not counted Page 7 of 8 Alpine County Summary Report Colonies Colonies Filaments Filaments Filaments Filament Single # #Cells #Multi- #Cells #Single- Length Cells Celled Celled HPR 04/03/2018 Harvey Place Reservoir 0 0 0 0 0 0 0 05/29/2018 Harvey Place Reservoir 0 0 0 0 0 0 0 06/07/2018 Harvey Place Reservoir 0 0 0 0 0 0 0 Results resported as mg/L except EC as uS/cm Turbidity as NTU Colifoms as MPN/100mL Temp as C NC=Not counted Page 8 of 8 Page 1 of 1 Monitoring Wells Groundwater Elevation Sample Depth Ref GW Site Location Date Hr ID# to GW MSL MSL ACMW-01AW Main Dam 04/04/2018 12:58 AG60729 6.13 5493.13 5,487.00 ACMW-01 BE Secondary Dam 04/04/2018 10:58 AG60730 3.99 5503.55 5,499.56 ACMW-02N Access Gate 04/04/2018 13:40 AG60731 7.26 5469.70 5,462.44 ACMW-02S Access Gate 04/04/2018 13:24 AG60732 7.69 5471.60 5,463.91 ACMW-04W Gansberg 04/04/2018 09:22 AG60733 14.62 4919.89 4,905.27 ACMW-06S Celio 04/04/2018 10:02 AG60734 15.35 5223.50 5,208.15 ACMW-08N Diamond Valley Ranch 04/25/2018 09:50 AG61091 0.00 5464.45 5,464.45 ACMW-08N Diamond Valley Ranch 06/26/2018 10:05 AG62053 5.01 5464.45 5,459.44 ACMW-09D Diamond Valley Ranch 05/17/2018 10:20 AG61434 26.26 5510.56 5,484.30 ACMW-10 Diamond Valley Ranch 05/17/2018 10:45 AG61435 25.72 5534.19 5,508.47 ACMW-11 Diamond Valley Ranch 05/17/2018 11:15 AG61436 15.50 5503.01 5,487.51 ACMW-12 Diamond Valley Ranch 04/25/2018 10:05 AG61092 20.42 5525.04 5,504.62 ACMW-13 Diamond Valley Ranch 04/25/2018 10:31 AG61093 9.53 5554.55 5,545.02 ACMW-14 . Diamond Valley Ranch 05/17/2018 11:59 AG61437 12.58 5547.20 5,534.62 ACMW-15 Diamond Valley Ranch 06/22/2018 14:06 AG61987 10.23 5500.60 5,490.37 ACMW-16 Diamond Valley Ranch 06/22/2018 14:33 AG61988 9.74 5484.53 5,474.79 ACMW-17 Diamond Valley Ranch 06/22/2018 15:33 AG61989 7.77 5504.92 5,497.15 ACMW-18 Diamond Valley Ranch 06/22/2018 16:50 AG61990 7.68 5470.56 5,462.88 ACMW-19 Diamond Valley Ranch 06/22/2018 16:04 AG61991 7.82 5417.25 5,409.43 ACMW-20 Diamond Valley Rd-Paynesville 04/25/2018 08:37 AG61094 12.75 5090.30 5,077.55 ACMW-21 River Ranch Rd 06/19/2018 11:23 AG61927 7.49 5011.33 5,003.84 ACMW-22 Fredericksburg Ln 06/19/2018 11:57 AG61928 23.72 5019.28 4,995.56 ACMW-23 Scott Brooke's Ranch by Irrigation 06/19/2018 14:38 AG61929 17.03 4978.35 4,961.32 Ditch ACMW-24 Scott Brooke's Ranch by Irrigation 06/19/2018 15:09 AG61930 23.02 4953.25 4,930.23 Ditch ACMW-25 Access road between Neddenriep& 06/19/2018 12:49 AG61931 7.02 4942.24 4,935.22 Brooke ranches ACMW-26 Access road between Neddenriep& 06/19/2018 13:23 AG61932 7.00 4895.60 4,888.60 Brooke ranches CONTROL East side near Post Office 04/18/2018 11:03 AG61014 60.91 6345.20 6,284.29 MW01_5 SW corner of ERB 04/18/2018 11:25 AG61015 58.62 6328.00 ' 6,269.38 MW02-50 South side of ERB Pond 04/18/2018 12:23 AG61016 45.33 6314.60 6,269.27 MW03-50 Southwest corner of ERB Pond 04/18/2018 14:31 AG61017 40.81 6310.10 6,269.29 MW04-50 Hank Monk side of ERB 04/18/2018 15:20 AG61018 33.40 6304.40 6,271.00 MW07-50 North side of ERB Pond 04/18/2018 11:56 AG61019 21.51 6302.20 6,280.69 MW08-25 South of Pond 1 04/18/2018 12:56 AG61020 10.41 6258.30 6,247.89 MW11 North of Biosolids building 04/18/2018 13:15 AG61021 26.34 6296.00 6,269.66 MW12 South of Biosolids Building 04/18/2018 12:52 AG61022 20.31 6288.80 6,268.49 MW13 South of Pond 2 along HVC 04/18/2018 12:22 AG61023 4.55 6263.40 6,258.85 Sample Comments Site Date Time Comments ACMW-08N 04/25/2018 09:50 Field inaccessible, flooded. ACMW-12 04/25/2018 10:05 Sample spiking solution for IC run was 0.80 mL check standard /8 mL sample. Spike levels too low but data reported. ACMW-13 04/25/2018 10:31 Sample spiking solution for IC run was 0.80 mL check standard /8 mL sample. Spike levels too low but data reported. ACMW-20 04/25/2018 08:37 Sample spiking solution for IC run was 0.80 mL check standard /8 mL sample. Spike levels too low but data reported. DD-01 06/26/2018 09:23 GW-11 04/25/2018 10:48 Sample spiking solution for IC run was 0.80 mL check standard /8 mL sample. Spike levels too low but data reported. GW-17 04/25/2018 09:12 Sample spiking solution for IC run was 0.80 mL check standard /8 mL sample. Spike levels too low but data reported. HPR 05/29/2018 14:34 Algae sample only HPR 06/26/2018 09:36 HVC-3 06/14/2018 13:22 Floaters were large amounts of pollen HVC-5 04/18/2018 11:06 Standing water HVC-5 06/14/2018 13:25 Dry SW-01 06/07/2018 13:05 NH3-N Sample accidentally discarded. SW-02 06/07/2018 12:40 NH3-N Sample accidentally discarded. SW-03 06/07/2018 11:52 NH3-N Sample accidentally discarded. SW-04 06/07/2018 11:41 NH3-N Sample accidentally discarded. SW-05 06/07/2018 09:31 NH3-N Sample accidentally discarded. SW-06 06/07/2018 10:04 NH3-N Sample accidentally discarded. SW-07 04/03/2018 12:56 Dry SW-07 06/07/2018 10:35 NH3-N Sample accidentally discarded. SW-08 06/07/2018 09:22 Dry 1 Alpine County Soils pH EC %Sat TKN NO3-N Total P Exch P SO4 CI S2A Celio Ranch 05/31/2018 8.13 2.85 63.1 2470 7.75 371 5.96 95 607 S3A Bently Ranch 05/31/2018 5.68 0.294 34.5 1260 1.27 435 6.25 36 14.3 S4A Bently Ranch 05/31/2018 6.46 0.409 30.8 1310 4.78 244 7.06 34 10.1 S5A Gansberg Ranch 05/31/2018 5.89 0.371 35.8 1600 9.62 369 4.69 20 9.44 S6A Neddenriep Ranch 05/31/2018 6.23 2.58 42.9 3890 100 432 35.7 46 59.8 S7A Bruns Ranch 05/31/2018 5.84 0.131 40.9 2140 2.03 486 4.55 31 5.09 CEC Cu Mo K Ca Mg Na SAR %Na S2A Celio Ranch 05/31/2018 34.5 7.6 0.06 1516 77.4 124 345 5.66 6.48 S3A Bently Ranch 05/31/2018 18.7 8.0 0.05 649 5.00 13.5 68.8 3.63 3.84 S4A Bently Ranch 05/31/2018 17.0 11.1 0.05 3411 14.1 11.5 75.0 3.59 3.79 S5A Gansberg Ranch 05/31/2018 16.7 6.0 0.06 1407 18.1 11.8 71.9 3.23 3.31 S6A Neddenriep Ranch 05/31/2018 19.8 11.6 0.06 2440 206 107 102 1.44 <1 S7A Bruns Ranch 05/31/2018 17.9 14.1 0.06 2277 50.1 9.00 48.8 1.67 1.14 Page 1 of 1 SOUTH TAHOE PUBLIC UTILITY DISTRICT Date: 4V11 11 EMERGENCY FOND POND MW FIELD MONITORING RECORD Samplers: 1.• , , ,..).., -v-- ,=‘,,,,,, I Pune ose: i. Preservative Std Check 1., . Depth to Well Water Calc Actual Well Casing Depth to Column Water to Water ; .. F.; Temp C Bottom Diameter GW Height Purge Purged 0 -r.: (Li), 0 < COMMENTS Site I D# Time 'C li pH pS/cm ft inch ft ft Gallons Gallons CONTROL 80.90 2 hag Al fft 1105 )01 707 2ti c. . 7,mu,,,,.., 1. - i,,,,,L;cf, 1 4,1,10,L,, 5 A,G61 015 - if , i 112S, 7 'I Ns 65 80 2 5-C 72 4) I ''') IIIIIIIIIII MWI. - , f 1;' kG61 MW02-50 ( . /7Z3 ItZ - i C, ,I 50.90 2 .V. L3- • / 111111!! I.; r , MW03-50 : i1 50.80 2 ( 3' ,, MW04-50 :: 51.00 2 1 t,, , i 1 gi fl't i ''') 111111 III ' 1‘600,1 a 7c 7Z r' ' MW07-50 l ; 52.60 2 'ZI-CI Si -1 6-0 !.' 120 7,-r t(-3 LI i ICI 9:,,,q i .1 ,I c-F— MW08-25 AG6# k,,,„, 20 /.60 2 KVI i 1U. MW1 1 i, 41.0 2 „ MW12 . ‘: iJ 31.50 2 11111111 , MW13 14.40 2 II II Trip Blank A661 02 :Vv.i''',,r...,,.,!,.•,..,,.-.4A,,,., ,•,,,,,',„.,,,.,,t.'....;„,,,,,,,I.,f 6a.:,;,•..,„,,,,„,•Z,I,,=':,...,..,,:,,=,,:g,;,,,T,,,O,,..,,.,,,,„'T-.,,',,,.k:40",.,,,t.,O,,k,t, kk, 7 / ,. , Groundwater samples shall be collected only after 1 well volumes Gallons to fltiish=1 x 7.48 x 3.14 x 0.083 x water column height pH Std Check us- a 7.00 buffer.pH meter must be re- have been flushed and Temperature,pH,and EC measurements Gallons to floSh=0.17 x water column height(ft) standardized if res,It exceeds 7.00±0.05.EC Std Check have stabilized to approximately±5`)/0 for each successive Water colurr0 height=depth of well-water level uses a 200 iS/cm andard measurement taken in intervals?..5 minutes. for 50 well‘*hose water level is 35 feet from ground level: 1A/Oter column height=50'-35'=15' File DALabTormsTield Sheets\Field ERB doc 4 i IQ/n(14, • Flushing Record • Date: ........., r .. ...... .... ................. :..:..;�...':u.':: %z:. 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Well CasingDepth to Column Water to Water _ Temp EC Bottom Diameter GW Height Purge Purged 0 -45— ,,() Oz 8 pH EC COMMENTS Site ID# Time °C pH pSitcm ft inch ft ft Gallons Gallons ° i i , . . CONTROL . :, go 2 •80. , _ . . , . v! • MW1 .5 r 65.80 2 . . .. , 1! 1: MW02-50 50.90 2 ---- I I 0 MW03-50 kGoiuti , 1 1'7 1 u 3 rj t/ 50I19; f.80 2 1 4 I ,._ ..I • , MW04-50 AG61013 1 „„e,ib1P\ 51.00 2 3 5.--- MWO7-50 52.60 2 - , il r MWO8-25 20.60 2 • „,,,, AG641 1,71,--- 0 Thii, 3 10 -)111 ii—, 1? , (67', 1- ;!,,i1 MW1 1 L.- 41.0 2 ----- . MW12 2 .11I ii 31.50 2 2D 7./ IP iI 2 ____ , .„,...- i , I 061023. 1)--17. - 5 (6 :1Pri-- (-i.:: - e , , e- 11,,IDL3 10 /, 7i- MW13 -4 .,. " t 14.40 2 p ,,,,,„,4,,v-,,,,,,,-„„emi4.--,..,wk,,,,,,--gat•„,..-,c,;:- ‘,,z4,,,e i 461 n21, i.' S'. atti ,e..',.',40,-.. ”„Ate-.1c.,,,,,..,e,:::;',4,,w;•--.4 : Groundwater samples shall be collected only after?...1 well volumes Gallons to flOSh=1 x 7.48 x 3.14 x 0.083'x water column height pH Std Check us a 7.00 buffer.pH meter must be re- have been flushed and Temperature,pH,and EC measurements Gallons to flt0h=0.17 x water column height(ft) standardized if res It exceeds 7.00±0.05.EC Std Check have stabilized to approximately±5%for each successive Water column height=depth of well-water level uses a 200 pS/cm fandard measurement taken in intervals?_5 minutes. for 50'well whose water level is 35 feet from ground level: . Water column height=50'-35'= 15' 1111 i File:D:\Lab\Forms\Field Sheets\Field ERB doc i,Iwo,, FlushingRecord Date: ����,�� V� 'Ellitglig':::'''6,- P-7,!..,77: :'"::'1:P•:;'':".,F!:!Sli 11:111I <t 1111 ... .. .:.:..::....�.:%'%':•.`:;•H �9:: eF4:;:.:C, 6.1111111110111:.f."0110111:1..,:ii!i. 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Ili Note:Temp,pH,EC must stabilize±5%for successive measurements taken in intervals?5 minutes. ):\Lab\Forms\Field Sheets\Monitor Well_Flushing_Record.doc SOUTH TAHOE PUBLIC UTILITY DISTRICT Date: q4c- t-.Vb . F S ACMW FIELD MONITORING RECORD , :,:.,-/-,-, Samplers: k\Av),\Ve, �_ �_ �_.�.� nye'a ie s�� ,-•.,c J „� ` e c+1.-G el! Purpose: ,r Preservative Std Check Depth to Well Water Calc Actual Depth Well Casing Column Water to Water to GW Temp EC Bottom Diameter Height Purge Purged v c H2S0 z o Site ID# Time ft C pH pS/cm ft inch ft Gallons Gallons , pH= _ > pH EC COMMENTS ACMWOIAW Lx• #- (251— . 0„ , A 0 I ia:-14°` a) 22.6 2 t ,,..irt 2.,..k , _ hG6CriCC-1 ACMW-01 BEt`fffti``` �,; `a 23.8 2 qS �� E,� hG6071 ' , ACMW-02N G6O73 - a 1.,,i'a,. K.2 lit 34.1 2 i . 1. 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Ti) IT -V 0 \011 1(1:1 €7411 yvsw:44. v\ ‘.71 0 P.0 co,o,chInV () , ciV)a- elvi)V ,..2 . I, li 44:1 q b'g T1 c,r 01 42S 1.-lirt- 4'cl• Q'S -7,131 '17 kloQ WW- (31 b '17c3' • 41,1 • ' ,',\Nekt.31 VI)1 Cal /7,1 Clb `1M0 q3.1 1 '.°) (2'61 q'l i:,qt • ... -1r01) , tA V Q.- PIO V 719 VI i Group 2 SOUTH TAHOE PUBLIC UTILITY DISTRICT Date: CV ' r td6 ACMW FIELD MONITORING RECORD Samplers: Loil, icy- ! Purpose: Preservative Std Check Depth to Well Water Calc Actual Depth Well Casing Column Water to Water . to GW Temp EC Bottom Diameter Height Purge Purged , z- H2SO4 S5 8 Site ID# Time ft °C pH pS/cm ft Inch ft _ ft Gallons ,. , pH= i > pH EC , COMMENTS •te ACMW-21 14Goriu iris 749 10 .2 Sno 0'3 30.0 2 22g ell- 1- On River Ranch Rd,East side of Hwy 88 AG6192R a-c. ,-, ACMW-22 -,- 11, 7 2;. 121 .3 6,.0q Jos 59.5 2 7,u S,5 l‘k, On Fredericksburg Lane,near S7 — An61 07n 71211'3° 1.' 2) /6'q 7,•24 SI I , 117 i 0 gn n 2 ,3i0 (0°C - ACMW-23 ,)t.r.v Upstream of SW-15 AG61 930 ' i .'61,1.,' Sic1.,,,, ACMW-24 50.0 2 Downstream of SW-15 ,4 A66194., efq 9,--1 (44 to.sz MI N . , 14- \.kg Behind Neddenriep's on Westside Lane; ACMW-25 .s.. 4 30.0 2 42,h - dirt rd between Hwy 88 and Carson River AG619 ---.. , , • ,,, 3?- 1. 2-.5'' 7 oo it,,,o toier;to (M Q.,?'.0 i. 12-q lc 1,0 ACMW 26 , ..„ 30.0 2 On Westside Lane @ Stateline 6113, ocro * - , Trip Blank „,,,,,,,,,,,,,,,,,.,,,„:„:,.., ,,,,..,,,„,,„.,,,,.:,..,,,:__,.,,,,.,,::,,,,,,,,,„,„,„,„:„,:„.,:„..„,„,„:„.„„„,_,:,,,,...,„„.:.,::i,z,:::,,:.,,,:,,,„,„,..E:,,„,„:„,,„,,,,..„,:i,,,„,,:,,,,wm,,z,-,,,k,,,,,,,,,,•,,,,,,,,,,,,,,, ,,,,,":,,,,,,m1,:,,,,,,,i,,,,,F,g,•s..4,--,,tig-,,,,f,,,Aq=,, 5:;-gtmz,z,;:.,,,,,,,,',';,;g4_,,,--4•Asi-l*,:s„,::,7;:,:-- --.,„;,:: Temperature of Control ')- frHtil when samples received q at Lab .,,:-y-,i.-'-'::-J.:,'.;:,.;:::::':.:.!,:y.,:-:',Y1:',','':,‘,•-.,::.:::-;,:;:i.-..:.:--':', '.::-::.,. -',,,i-,--;;i.-:i,'-',.,-,s'i,:'.-!:.,,e_ii:-_-: '.':':•:-_,-,:',,:1:-.,::;:,:,:i'.4,'.::',:', 4i:, ,'e,,:!,i,:','.g::::!:',-::t:-::.,:,,,--,2,:,,,,-,,2,;:-.-::;4z;--,; ,,:,,'::,:,:',,,,,:,,,-,:_i'i,-,--;,:',.-,*:-.,:n, ---",,i':,=,,,ui,,,,=,,, F,,,::,,,-, _.,,,„;,,:,..„,,:_,,,,, ,,„,,,,; ;:,,„,„,,,,,,:,,,, „,,„,,,._,, : ,', ,,,, Gallons to flush=1 x 7.48 x 3.14 x 0.0832 x water column height pH Std Check uses a 7.00 buffer.pH meter must be re- Groundwater samples shall be collected only after 1 well volumes Gallons to flush=0.17 x water column height(ft) standardized if result exceeds 7.00±0.05.EC Std Check have been flushed and Temperature,pH,and EC measurements Water column height=depth of well-water level uses a 200 pS/cm standard have stabilized to approximately±5%for each successive for 50'well whose water level is 35 feet from ground level: measurement taken in intervals?..5 minutes. Water column height=50'-35'=15' DALafforms\Field Sheets\Field ACMW-20_to_26.doc (7C\ 9/20/2017((I (ch \ - • 9/20/2017 Flushing Record Date: Oto•tel e ;.!!., •g atilt.1" IOU,11111 Ina C.10.00110111SAIggi Int ter,11111111 11 11.1111,11:4111• Minutes Gallons o pl p8 . fiCio -1:2-I 1 1,06 .2-. 0 it 13 isigi 4 1,0.1 C-tg4 103 • 11 (40 ' 'IL /tr,o 10,,2-. 5:71 1,01- 1)/2-7) '22Gat '10 i S • n CAvvv\i -22- itS 7 2 '2--0 1",;5' zg exel- 104 • tatr,oft VI ci 12 tS t -1 ios • • A . tZ.Sc'. is-:2; G.. 07.1t- /2,37 tZktf 1Y4 I'm 12(15 1.2 it4 . . • Att\A 2- -7 iOn i (-; ii 1icstaiv-4--e• se-c, p31'? 7 If 11,d?, (, I. ie P2j., /le 21 03 ) •:g 23 17 2,1 :lb 1Le, Aati(i,j„,,t-3 14 2.2 :2- / tM ?tot, 516, t • • rr:•57) (36, lz. 3 ,3 1‘0 ••11 I 131 • Az itMi )4.0 111 ,R1 (oczi • YV7) ibd" 0 41 to '7 bs' striIL Lco • TA, Note:Temp,pH,EC must stabilize±5%for successive measurements taken in intervals 5 minutes. ):\Lab\Forms\Field Sheets\Monitor_Well_Flushing_Record.doc , , .. --',6- i?) Group 3 SOUTH TAHOE PUBLIC UTILITY DISTRICT Date: liiii ,,. :,,.,:,,, ( 4 / ''-'1'.-- , ACMW FIELD MONITORING RECORD Samplers: /,--, '''' -C J \,-* A —146i1 C'') ' ' Purpose: Preservative II Std Check Depth to Well Water Calc Actual Depth W to GW Temp EC BottomeliDiameterCasing HeightColumn WaterPurge to o W atePurgedry 1-1 S 04 § 8 , u) T > . pH EC COMMENTS Site ID# Time ft °C pH pS/cm ft Inch ft Gallons Gallons p H= No*. a,co2 ,Ht\s‘g-- ACMW-08N 70.1 2 14661 ACMW-12 __. . 73.5 2 / i ___ AG61093_ ACMW-13 . t(161 ci c 'let 6,23- tio 20.0 2 10t1/41 A661094 , i tl, I On diamond Valley Rri near SW-05 ACMW-20 , qQ-1. ,, is- 'to L 21 (12_, . u - - t 21 5 2 t,1,.:‘ :ik't , 4 _ tk GW-11 .„, A661095 - , i , i,,,„.., 9`..A0(56 iit.V 'ii Llt A fr/ ri ko A661 GW17 09 / I.L.1- .-- V j (00.4-., (PHI '1/4-?1) fe 7512 rl.L-- kG61097 Trip Blank --- A 4 , 0, _ ,,.,:,,s,::.,,,.:::s. ,:,::.:,--, :,::,;-:-,-,,,,. .,,,,.,,,:;:i.::: :*.:,,.'-i,v::%::::,:;-,,,Fi!:,,,,::,:iy,,m,',,,vE:,-, ,.;:`fi;: ,,,i ,-:,,,,i;i,,',..:,.-A..',;`,,s ;:::,,, ,:w,,, ,:::: ,,a,:;,,,::,--,-,:::::1,:?;:-,- Wigin!,r4 tt::4'q M'::',--,' .':::;,'-'_':: M:(,;1:''.;:::",:;'::::::.:Fg.',- =='',',*?': -1.:;::',ILt'-t-i,"'i'if'.:':4:.6'.,::',:',WI,'''.':-AMTV:''';.,'W''',-;J'A':.:'•;:;':':1,1'-':',-?.i:': Temperature of Control in,a1 ,_: ,iA!,,p,i,,,', If ,1;,,,; ,:?"f•,,,,,A i-.i,-.:::44,,':,ig-f,, Itp,,,,,x1,,,, ii,k--,,,, %-;Y. t.,,,n;‘:.-,,,,,,,t,i,:t.-,: ,.-.--.,'::-',-,•;,,-:. when samples received lb Lit : '-:...,:=:,„ ,,-,. ,.,,, , ,,.:,,ez;;azi,i.gus:;ti3O,,,,,,,y::,.;-,-,;,?,,i,, ,,;,:,,:.:„:::,,s,',,,,:i::::,: :,„ ,:::;:,:,,,,,:,,z__,:,:::::,,,,,.:,,,:n,-,.-...,:,,,,,,„-,„, ,,,-,,,,:.,..,,,,,',,,,,,,, :,, ,„ at Lab Minimum gallons to flush=1 x 7.48 x 3.14 x 0.0832 x water column height pH Std Check uses a 7.00 buffer.pH meter must be re- Groundwater samples shall be collected only after?.1 well volumes Gallons to flush=0.17 x water column height(ft) standardized if result exceeds 7.00±0.05.EC Std Check have been flushed and Temperature,pH,and EC measurements Water column height=depth of well-water level for 50'well whose water level is 35 feet from ground level: uses a 200 pS/cm standard have stabilized to approximately±5%for each successive Water column height=50'-35'=15' measurement taken in intervals.?•_.5 minutes. 9/20/2017 DALafformsTield Sheets\Field ACMW-Group_3.doc Flushinrj Record Date: : /� Y,> erg,. CI' ( -- i ,r.g. (.0 ` 1,(0 ib,4) [2.2-% 11,() I‘C.IA\41 MA) it„ (,12 tOt (665 - 11:1- s py r<)7 Iv ) L d) -.1:21,0k121 11D Note:Temp,pH,EC must stabilize±5%for successive measurements taken in intervals>_5 minutes. ):\Lab\Forms\Field Sheets\Monitor_Weli_Flushing_Record.doc Group3_ SOUTH TAHOE PUBLIC UTILITY DISTRICT Date: 'ar� \ ? .,/ ,, - ACMW FIELD MONITORING RECORD Samplers: ''''''‘ 1 ) Purpose: _ , Preservative Std Check Depth to Well Water Calc Actual Depth Well Casing Column Water to Water ai to GW Temp EC Bottom Diameter Height Purge Purged U .E H2SO4 o < Site ID# Time ft °C pH pS/cm ft Inch ft Gallons Gallons pH= z > pH EC COMMENTS .--flrems; ;��=-�.:� 1 j N j =- k _. `� 70.1 2 (DTA t . �� �'ACMW 08 . . y �. � > ACMW-12 73.5 2 , , ACMW-13 20.0 2 _ ACMW-20 - 21.5 2 On diamond Valley Rd near SW-05 GW-11 , . GW-1.7 . , Trip Blank r . , , . - - . . _ , Temperature of Cont of ,sio Initial a . . . . ... ..- ..f... n: . . ..._ ......�_ . e ...<- r . .,..,-... . „_� .. >} , J fi�.` ' h_:; <t S te, - " iii,em; +4 'ri w %y -c�:� - . . .. .. .,. ,.. .. ., . .._ ... ... ..� ,, ,:;.-,::',,,,,,,_!:::,',0:,.;:',,,,,,-i-.,fC_ n�'�� - iYi � ::"1.�..' a.Y ,ram' - ' i ra : - "� when samples rece ate , ...... s.:: :.-., .s. :-<. - _ +��, f ;Y�' - c ,.<[ ,-:;:offcx^. - to. F ' _ a b ,,.Q--4,,)'1-4,-,,,.,!,;---,4,:',:,. _ `: ..n.n.�<„-•...,i -, .... _ -.w ,n Minimum gallons to flush=1 x 7.48 x 3.14 x 0.0832 x water column height pH Std Check uses a 7.00 buffer.pH meter must be re- Groundwater samples shall be collected only after>_1 well volumes Gallons to flush=0.17 x water column height(ft) standardized if result exceeds 7.00±0.05.EC Std Check have been flushed and Temperature,pH,and EC measurements Water column height=depth of well-water level uses a 200 pS/cm standard have stabilized to approximately±5%for each successive for 50'well whose water level is 35 feet from ground level: measurement taken in intervals>_5 minutes. Water column height=50'-35'=15' D:\Lab\Forms\Field Sheets\Field ACMW-Group_3.doc 9/20/2017 Date: Flushinu Record statiosi vitoduijA: Teflp EC Minutes GalI6ns °C pH JS • Comments . ' .• „ (Yrit 1\-iivVa ,)",(3 (10 4 + tL [ti() (..9,1() (1( 21,6 L4 LIL IM • ',. Note:Temp,pH,EC must stabilize±5%for successive measurements taken in intervals 5 minutes. ):\Lab\Forms\Field sheets\monitor_Well_Flushing_Record.doc Group 4 SOUTH TAHOE PUBLIC UTILITY DISTRICT ,'3' Date: ��vl,-\t, ACMW FIELD MONITORING RECORD - fipr ';;Samplers:1'f t/ '---,. — ,',,:, ... i," :0,k \-.:-.,k_i ,u , u ,A,10-Ack-31:,, Purpose: Preservative Std Check Depth to Well Water Calc Actual Depth Well Casing Column Water to Water to GW Temp EC Bottom Diameter Height Purge Purged H2SO4 o a Site ID# Time ft °C pH pS/cm ft Inch ft Gallons Gallons pH= _ pH EC COMMENTS t66iL `p D fcoq45.1 2ACMW 09 .t . � LI om- 435 e �'' (ACMW-1OAb- 0 38.5 2 tt-it 20,1:71- 21 K., - J .6 rV , (S----- ACMW 11 A061436 33.5 2 l 6 417fo / o!7 V/ i y ACMW 14 (q 30.0 211,i2._ (1. B , _ GW-05 4641 .f,79 , ,h V h 4.4,0 (Di) c 1 3 yisiv2,-"q-I / 9 ; -- ---- , A661 X39 GW-08 '0, t, 79 5t6 F% s 4 _ ,1,ki . hy4C“i/:.:1 if , OA Trip BlankI _ 14 Di dr,lir i,3'1 lil iy `t-INI-- '''. -‘ 'N' '. ' .'' - -%,‘ 1?5 hi- om.r--,v Temperature Infial - ofo +� , _Nhen samples received y _ cil, ;t' , r at ab Minimum gallons to flush=1 x 7.48 x 3.14 x 0.0832 x water column height pH Std Check uses a 7.00 buffer.pH meter must be re- Groundwater samples shall be collected only after>_1 well volumes Gallons to flush=0.17 x water column height(ft) standardized if result exceeds 7.00±0.05.EC Std Check have been flushed and Temperature,pH,and EC measurements Water column height=depth of well-water level uses a 200 pS/cm standard have stabilized to approximately±5%for each successive for 50'well whose water level is 35 feet from ground level: measurement taken in intervals?5 minutes. Water column height=50'-35'=15' J:\Lab\Forms\Field Sheets\Field ACMW-Group 4.doc 1/99I9n1 F Flushinv Record Date: 05 - iqb <I- • Minutes Gallons °C pH pS Wefi? Time Flushed.. ..T.EiTushed ±5% •.*5% 5°h. . .. Sam'ler .: Co1iments . kjAVI--9 I Mit. 3+0\yi Nir‘i (1.(11 jog() Z1-,6 (1 A to 11) , *Alt IA) 0 go 3. 3 ca) I%3 /075 1114.1 I 11..5- tfl- 11 ( Pi, -). 1( filo , e It)-, I 571 n, iioq 4).4 • (11C • 11.*':)-- (23 'it , 1t I t. A 041 T) 5 i2. 4.7, 4 Ft 117i /0 (9 16,1 rtfAb Note:Temp,pH,EC must stabilize±5%for successive measurements taken in intervals 5 minutes. ):1Lab\Porms\Field Sheets\Monitor_Well_Flushing_Record.doc , ...... , .0. - Group 5 SOUTH TAHOE PUBLIC UTILITY DISTRICT Date: ACMW FIELD MONITORING RECORD Samplers: Y cie, ... Purpose: Preservative Std Check _ Depth to Well Water -Calc Actual Well Casing Column Water to Water Depth ••= c5 a to GW Temp EC Bottom Diameter Height Purge Purged -') z o pH EC COMMENTS Site ID# Time ft °C . S/cm ft Inch ft Gallons Gallons . cn . z > 1 ' AGWOi A , .0 4 '.7 1:.;\ ')€ IF 1111111 1, 7 .3,- AC MW-15 nii ,, ,-4' " 29.5 2 1 , , Ar,1 1,Q09 AU01/00 7--ii i3. to.081°('' ,..- . ?Ai 5.,:-: to.s Ltd, II 29.0 2 — AC MW-16 , , -- , • AG615-89 : , , 7.77 iz,0 (v.-4-7 Be-t 0 0 2 1 41 ,0 (2.o111- 111111 3 . AC MW-17 i If. 1111111111 . , .......... AC MW-18 ‘66 _ = -(0 lc, 7,C3 H-.9 to-LI . i 28.0 2 3 2,-, ;7\ 0 ,o AG61991 , '741 izt.-7 .,, to e ,:,, L1-7,5 (.‘,- 20.0 2 ACMW-19 __ _------ A66199' ivy .--\ i II 1111111 Trip Blank - , __ 11111111 11 1 . 1111111111111111111111 ,r,it,a, p-* tt„..,,,,,-k,"4,e--',tc'-,-,,,,,',•,,,,,_„Arb,_ew-,,,to,,,,,,,,,ts,„.0,,,,,(7,:,,,,,,,,,„ 0, , ---w 4.-,,44,:,,,,-.%,,,,,•-,,,,i-,-. •li-z-, ,'- --:-L,..--7,-N,- ,.- -,,--c-, Temperature of Control when samples received gttigfrS V.5:1,,t;:,,,,',,,'X'',..,1,:tt%:'-4',...k-U4Ptig,;gAtteitiAl i,;.-5-t.4_,..,,t,C,V ritts'Itw,,,-&va,..::-..ct.,::1' ',..:f,',.,,f, •,..-..7,:P"-r-'i:',-:.,-.:','-z.. 1,-...*Ar,''',!-1: 4---,0,.;'Otz-,t:,--.t...,--1'I`le. .'‘..z.tritorttair.,,'tt,,,As,apRig,,,, , at Lab ,,,,,,,,,,,,,k,„,4,,,koN.,...,",4„,,A,40.,14,„k„..24,0,,,,,,....,,:.,,,,,,,.,,0,-,,,',4.,,,,*.A.,To do,: ---4,7?t,--4,.-A?,,,,,, , ,, .1,„•-p,:_.„_,',,,,,,,-,r,,;.,,,,:,.„,..,-,-6*,,---,,,,;--:,--,,,IfV4 it.a.0 t 4-:,-7.4,41.4,..twfa,.. '2,k,lorr',,,,,,,f.;,,,eVilk. ItAattf0 a-Arit*Wiej-,-,,',..ite ralit.V.M*Waf..1f.,:-.-,7A,!,a§liggMf.,t4,,,,,ht,,,,,,,,,,Alst,44,Zict,,,iti44-f-A.':...A PM.1,:t4 .L.,,zitril Mtn'''.,,k,',,,,,,,-1,r...-Z-1;a..V....-V,_.4.,a.-..IP,-.*,..,,.,t,,,NO -',g1,:..,*44:..47,4,',,W.:'..r,•,441,1,0;,,t,,,,,,,, g, Minimum gallons to flush=1 x 7.48 x 3.14 x 0.0832 x water column height pH Std Check uses a 7.00 buffer.pH meter must be re- Groundwater samples shall be collected only after?,1 well volumes Gallons to flush=0.17 x water column height(ft) standardized if result exceeds 7.00±0.05.EC Std Check ,have been flushed and Temperature,pH,and EC measurements Water column height=depth of well-water level _ uses a 200 pS/cm standard I have stabilized to approximately±5%for each successive for 50'well whose water level is 35 feet from ground level: measurement taken in intervals.?:.5 minutes. Water column height=50'-35'=15' • 1-1•11 ohAPnrrne1Piza.,h,antelPin.ErIMALO-rni in ,dr,. 1 PY7/9/11A 06--7 Flushing Record Date: -CZ l AT:Att .. ..,. .:.... ..,.::..::.i.'."...., ':fl%.:'•c:.�..e•.('":,'i:.'�:ti'.;�•::is ...:..:..... .. .. .,.. .,,.,, .... ..... .... .. .,.,..,:.�r::<.s �¢•il..s.,, his>':'��4( , ... ... .. .. .... .. ... . .. ... .. n ..... ;... n ,'fit*-•'':�;';:';.:::�'<.'..�:i rte. .: .. .... ...,.. .. .. .,.> ..,., .. ... .,,. .: �::.,,:^"n.:,: '3:1'•:'::%`�i•?;��.y! .Time , ,...,..... �5.10..... ... 1Q.+. .:w ................ riC-10.1 (110 _ 74-1) iss-te et,c, 14. 1 96„.0 141-(,..) I (Q A 071 Z-Aa-1)9 4 Ic)Y )12e, es \-?) ! if a i�: ~4 • . (c.),;()S) /0(r, .••„. A wry\I- (2.,0 .?). (0.,g5; •r )s-1-8-7 . (( ( A) 07E3 H S.b cry 1— •2 0 /'2o :C>1 1)101 kx,:\ '49 i 6, 2, S' • • 1-2( • •Issei los.° _ 2,to Ito tr':- I i Z(5 , . :'• • • . _ 0 ic; (0:33 • • - 1(.1 4 14' )1 17 14'9 , 4 .k r; • M1 v;i • • Note:Temp,pH,EC must j%for successive measurements taken'in intervals>5 minutes. ):1Lab1Forms\Field Sheets\Monitor Wel; cord.doc f..