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August 25, 2021 Lab ID : STK2150747 <br /> San Joaquin Co. Environmental Health Dep Customer : 3-17919 <br /> Quality Control - Inorganic <br /> Constituent Method Date/ID Type Units Cone. QC Data DQO Note <br /> Metals <br /> Sodium 200.7 08/03/21:211926AC CCB ppm -0.05 1 <br /> Zinc 200.7 MS ug/L 800.0 97.5% 75-125 <br /> (CH 2176113-001) MSD ug/L 800.0 88.1% 75-125 <br /> MSRPD ugIL 4000 9.3% :520.0 <br /> 200.7 08/03/21:211926AC CCV ppm 1.000 95.7% 90-110 <br /> CCB ppm -0.0007 0.02 <br /> CCV ppm 1.000 96.0% 90-110 <br /> CCB ppm 0.0002 0.02 <br /> Wet Chem <br /> Alkalinity(as CaCO3) 2320B (VI 2145843-001) Dup mg/L 1.3% 10 <br /> 2320B 08/10/21:212311 AMM CCV mg/L 235.8 93.1 % 90-110 <br /> CCV mg/L 235.8 93.9% 90-110 <br /> Bicarbonate 2320B (VI 2145843-001) Du mg/L 1.2% 10 <br /> Carbonate 2320B (VI 2145843-001) Du mg/L 0.0 10 <br /> Hydroxide 2320B (VI 2145843-001) Du mg/L 0.0 10 <br /> Conductivity 2510B 08/12/21:212407sta ICB umbos/cm 0.110 1 <br /> CCV umhos/cm 999.0 99.8% 95-105 <br /> CCV umhos/cm 999.0 99.9% 95-105 <br /> E.C. 2510B 08/12/21:209209sta Blank umhos/cm ND <1 <br /> (STK2151138-004) Dup umhos/cm 0.3% 5 <br /> Total Dissolved Solids(TFR) 2540CE 08/02/21:208732CTL Blank mg/L ND <20 <br /> LCS mg/L 994.2 101% 90-110 <br /> (CC 2182637-001) Dup mg/L 2.3% 5 <br /> (CC 2182637-001) Du mg/L 0.9% 5 <br /> hloride 300.0 07/30/21:208674MCA Blank mg/L ND <1 <br /> LCS mg/L 25.00 101 % 90-110 <br /> MS mg/L 50.00 88.1% 85-121 <br /> (VI 2145887-001) MSD mg/L 50.00 88.8% 85-121 <br /> MSRPD mg/L 10.00 0.4% <19 <br /> MS mg/L 50.00 93.8% 85-121 <br /> (STK2150747-001) MSD mg/L 50.00 94.9% 85-121 <br /> MSRPD mg/L 10.00 0.8% 1 <19 <br /> 300.0 07/30/21:211830MCA CCB mg/L 0.00 1 <br /> CCV mg/L 25.00 99.3% 90-110 <br /> CCB mg/L 0.09 1 <br /> CCV mg/L 25.00 99.4% 90-110 <br /> Fluoride 300.0 07/30/21:208674MCA Blank mg/L ND <0.1 <br /> LCS mg/L 2.500 101% 90-110 <br /> MS mg/L 5.000 104% 87-120 <br /> (VI 2145887-001) MSD mg/L 5.000 104% 87-120 <br /> MSRPD mg/L 10.00 0.6% _<16 <br /> MS mg/L 5.000 103% 87-120 <br /> (STK2150747-001) MSD mg/L 5.000 104% 87-120 <br /> MSRPD mg/L 10.00 1.1% _<16 <br /> 300.0 07/30/21:211830MCA CCB mg/L 0.01 0.1 <br /> CCV mg/L 2.500 100% 90-110 <br /> CCB mg/L 0.000 0.1 <br /> CCV mg/L 2.500 100% 90-110 <br /> Nitrate 300.0 07/30/21:208674MCA Blank mg/L ND <0.4 <br /> LCS mg/L 20.00 100% 90-110 <br /> MS mg/L 40.00 102% 85-119 <br /> (VI 2145887-00 1) MSD mg/L 40.00 103% 85-119 <br /> MSRPD mg/L 10.00 0.9% _<19 <br /> MS I mg/L 1 40.00 1 98.1 % 1 85-119 <br /> Page 7 of 9 <br />