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June 9, 2021 Lab ID : STK2136696 <br />San Joaquin Co. Environmental Health Dep Customer : 3-17919 <br />Quality Control - Inorganic <br />Constituent NI ethod Date/ID Type Units Cone. Q( Data DQO Note <br />Metals <br />Sodium 200.7 05/17/21:207350AC CCB ppm 0.03 1 <br />Zinc 200.7 MS ug/L 800.0 96.5% 75-125 <br />(STK2136696-001) MSD ug/L 800.0 97.3% 75-125 <br />MSRPD ug/L 4000 0.9% <20.0 <br />200.7 05/17/21:207350AC CCV PP111 1.000 96.5% 90-110 <br />CCB ppm -0.0060 0.02 <br />CCV ppm 1.000 95.2% 90-110 <br />CCB ppm -0.0052 0.02 <br />Wet Chem <br />Alkalinity (as CaCO3) 2320B (VI 2143532-003) Dup mg/L 0.3% 10 <br />2320B 05/18/21:207364AMM CCV mg/L 235.8 93.7% 90-110 <br />CCV mg/L 235.8 93.6% 90-110 <br />Bicarbonate 2320B (VI 2143532-003) Dup mg/L 0.4% 10 <br />Carbonate 2320B (VI 2143532-003) Dup mg/L 0.0 10 <br />Hydroxide 2320B (VI 2143532-003) Dup mg/L 0.0 10 <br />Conductivity 25108 05/18/21:207331sta ICB umhos/cm 0.11 1 <br />CCV umhos/cm 1000 101 % 95-105 <br />CCV umhos/cm 1000 100% 95-105 <br />E. C. 25108 05/18/21:205467sta Blank umhos/cm ND <1 <br />(SP 2105687-001) Dup umhos/cm 0.1% 5 <br />Total Dissolved Solids (TFR) 2540CE 05/14/21:205328CTL Blank mg/L ND <20 <br />LCS mg/L '105 0 96.4% 90-110 <br />(CH 2173276-001) Dup mg/L 0.6% 5 <br />(CH 2173276-001) Dup mg/L 2.1% 5 <br />Chloride 300.0 05/13/21:205293MCA Blank t)ttJttt E E E 5. F. t: ND <1 <br />LCS 25.00 101% 90-110 <br />MS 50.00 99.1 % 85-121 <br />(STK2136694-001) MSD 50.00 99.2% 85-121 <br />MSRPD 10.00 0.1% <19 <br />MS 50.00 97.7% 85-121 <br />(STK2136696-001) MSD 50.00 98.9% 85-121 <br />MSRPD 10.00 1.0% <19 <br />300.0 05/13/21:207101MCA ICB mg/L 0.00 1 <br />ICV mg/L 25.00 101% 90-110 <br />CCB mg/L 0.09 1 <br />CCV mg/L 25.00 101% 90-110 <br />Fluoride 300.0 05/13/21:205293MCA Blank mg/L ND <0.1 <br />LCS mg/L 2.500 104% 90-110 <br />MS mg/L 5.000 104% 87-120 <br />(STK2136694-001) MSD mg/L 5.000 104% 87-120 <br />MSRPD mg/L 10.00 0.5% <16 <br />MS mg/L 5.000 103% 87-120 <br />(STK2136696-001) MSD mg/L 5.000 103% 87-120 <br />MSRPD mg/L 10.00 0.7% <16 <br />300.0 05/13/21:207101MCA ICB mg/L 0.000 0.1 <br />ICV mg/L 2.500 103% 90-110 <br />CCB mg/L 0.000 0.1 <br />CCV mg/L 2.500 102 % 90-110 <br />Nitrate 300.() 05/13/21:205293MCA Blank mg/L ND <0.4 <br />LCS mg/L 20.00 102% 90-110 <br />MS mg/L 40.00 102% 85-119 <br />(STK2136694-001) MSD mg/L 40.00 102% 85-119 <br />MSRPD mg/L 10.00 0.04% <19 <br />MS mg/L 40.00 98.0% 85-119 <br />Page 7 of 9