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April 2, 2021 Lab ID : STK2133581 <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 03/17121:204005AC CCB PPM 0.15 1 <br /> inc 200.7 MS ug/L 800.0 96.0% 75-125 <br /> (CC 2180819-001) MSD ug/L 800.0 101% 75-125 <br /> MSRPD u 4000 5.1% :520.0 <br /> 200.7 03/17/21:204005AC CCV ppm 1.000 94.2% 90-110 <br /> CCB ppm 0.0001 0.02 <br /> CCV ppm 1.000 90.6% 90-110 <br /> CCB PPM 0.0004 0.02 <br /> Wet Chem <br /> lkalinity(as CaCO3) 2320B (VI 2141925-001) Dup m 0.01% 10 <br /> 2320B 03/22/21:204180AMM CCV mg/L 235.8 98.6% 90-110 <br /> CCV m 235.8 104% 90-110 <br /> Bicarbonate 2320B (VI 2141925-001) Dup mg1l, 0.0% 10 <br /> Carbonate 2320B (VI 2141925-001) Dup mg1l, 0.0 10 <br /> Hydroxide 2320B (VI 2141925-001) Dup m 0.0 10 <br /> Conductivity 2510B 03/22/21:204157sta ICB umhos/cm 0.06 1 <br /> CCV umhos/cm 999.0 98.9% 95-105 <br /> CCV umhos/cm 999.0 98.4% 95-105 <br /> E.C. 25106 03/22/21:203059sta Blank umhos/cm ND <1 <br /> (SP 2103526-001) Dup umhos/cm 0.1% 5 <br /> Total Dissolved Solids(TFR) 2540CE 03/17/21:202909CTL Blank mg/L 4.5 20 <br /> LCs mg/L 095.0 99.6% 90-110 <br /> (SP 2103609-001) Dup mg/L 0.5% 5 <br /> (SP 2103609-001) Dup mg/L 0.9% 5 <br /> Chloride 300.0 03/19/21:203025MCA Blank mg/L ND <1 <br /> LCs mg/L 25.00 103% 90-110 <br /> MS mg/L 50.00 88.9% 85-121 <br /> (VI 2141951-001) MSD mg/L 50.00 90.7% 85-121 <br /> MSRPD mg/L 10.00 0.9% :519 <br /> MS mg/L 50.00 99.9% 85-121 <br /> (SP 2103651-001) MSD m9/L 50.00 101% 85-121 <br /> MSRPD m 10.00 0.7% <19 <br /> 300.0 03/19/21:204214MCA CCB mg/L 0.09 1 <br /> CCV mg/L 25.00 102% 90-110 <br /> CCB mg/L 0.09 1 <br /> CCV m 25.00 102% 90-110 <br /> [Fluoride 300.0 03/19/21:203025MCA Blank mg/L ND <0.1 <br /> LCS mg/L 2.500 106% 90-110 <br /> MS mg/L 5.000 104% 87-120 <br /> (VI 2141951-001) MSD mg/L 5.000 106% 87-120 <br /> MSRPD mg/L 10.00 1.2% :516 <br /> MS mg/L 5.000 105% 87-120 <br /> (SP 2103651-001) MSD mg/L 5.000 106% 87-120 <br /> MSRPD mg1l, 10.00 0.6% :516 <br /> 300.0 03/19/21:204214MCA CCB mg/L 0.01 0.1 <br /> CCV mg/L 2.500 103% 90-110 <br /> CCB mg/L 0.000 0.1 <br /> CCV m 2.500 104% 90-110 <br /> Sulfate 300.0 03/19/21:203025MCA Blank mg/L ND <0.5 <br /> LCS mg/L 50.00 107% 90-110 <br /> MS mg/L, 100.0 106% 82-124 <br /> (VI 2141951-001) MSD mg/L 100.0 107% 82-124 <br /> MSRPD mg/L 10.00 1.6% :523 <br /> MS m 100.0 1 107% 1 82-124 <br /> Page 7of9 <br />