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May 18, 2021 Lab ID : STK2136229 <br /> San Joaquin Co. Environmental Health Dep Customer : 3-17919 <br /> Quality Control - Inorganic <br /> Constituent Method Date/ID Type Units Conc. QC Data DQO Note <br /> Metals <br /> Sodium 200.7 05/10/21:20693 1 AC CCB PPM 0.02 1 <br /> inc 200.7 MS ug/L 800.0 104% 75-125 <br /> (V12143433-002) MSD ug/L 800.0 110% 75-125 <br /> MSRPD ug/L 4000 5.7% <20.0 <br /> 200.7 05/10/21:20693 1 AC CCV ppm 1.000 104% 90-110 <br /> CCB ppm -0.00005 0.02 <br /> CCV ppm 1.000 101 % 90-110 <br /> CCB PPM -0.0002 0.02 <br /> Wet Chem <br /> Alkalinity(as CaCO3) 2320B (VI 2143433-001) Dup mg/L 3.6% 10 <br /> 2320B 05/16/21:207219AMM CCV mg/L 235.8 96.0% 90-110 <br /> CCV mg/L 235.8 93.1 % 90-110 <br /> Bicarbonate 2320B (VI 2143433-001) Du mg/L 3.7% 10 <br /> Carbonate 2320B (VI 2143433-001) Du mg/L 0.0 10 <br /> Hydroxide 2320B (VI 2143433-001) Dup m 0.0 10 <br /> Conductivity 2510B 05/17/21:207233sta ICB umhos/cm 0.09 1 <br /> CCV umhos/cm 1000 102% 95-105 <br /> CCV umhos/cm 1000 101% 95-105 <br /> E.C. 2510B 05/17/21:205392sta Blank umhos/cm ND <1 <br /> (CH 2172584-001) Dup umhos/cm 0.2% 5 <br /> Total Dissolved Solids(TFR) 2540CE 05/I l/21:20518ICTL Blank mg/L ND <20 <br /> LCS mg/L 995.0 102% 90-110 <br /> (SP 2105932-001) Dup mg/L 0.04% 5 <br /> (SP 2105932-001) Du mg/L 1 1.0% 5 <br /> hloride 300.0 05/07/21:205045MCA Blank mg/L ND <1 <br /> LCS mg/L 25.00 103% 90-110 <br /> MS mg/L 50.00 94.1 % 85-121 <br /> (SP 2105749-001) MSD mg/L 50.00 95.8% 85-121 <br /> MSRPD mg/L 10.00 1.1% _<19 <br /> MS mg/L 50.00 96.4% 85-121 <br /> (VI 2143433-002) MSD mg/L 50.00 97.7% 85-121 <br /> MSRPD mg/L 10.00 0.8% <19 <br /> 300.0 05/07/21:206925MCA CCB mg/L 0.1 1 <br /> CCV mg/L 25.00 99.5% 90-110 <br /> CCB mg/L 0.1 1 <br /> CCV mg/L 25.00 99.3% 90-110 <br /> Fluoride 300.0 05/07/21:205045MCA Blank mg/L ND <0.1 <br /> LCS mg/L 2.500 105% 90-110 <br /> MS mg/L 5.000 103% 87-120 <br /> (SP 2105749-00 1) MSD mg/L 5.000 105% 87-120 <br /> MSRPD mg/L 10.00 1.7% <16 <br /> MS mg/L 5.000 105% 87-120 <br /> (VI 2143433-002) MSD mg/L 5.000 106% 87-120 <br /> MSRPD mg/L 10.00 1.0% <16 <br /> 300.0 05/07/21:206925MCA CCB mg/L 0.015 0.1 <br /> CCV mg/L 2.500 100% 90-110 <br /> CCB mg/L 0.015 0.1 <br /> CCV mg/L 2.500 100% 90-110 <br /> Nitrate 300.0 05/07/21:205045MCA Blank mg/L ND <0.4 <br /> LCS mg/L 20.00 103% 90-110 <br /> MS mg/L 40.00 103% 85-119 <br /> (SP 2105749-001) MSD mg/L 40.00 105% 85-119 <br /> MSRPD mg/L 10.00 1.7% <19 <br /> MS I mg/L 1 40.00 1 92.7% 1 85-119 <br /> Page 7 of 9 <br />