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June 23, 2021 Lab ID : STK2137082 <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 05/24/21:207767AC CCB PPM 0.23 1 <br /> inc 200.7 MS ug/L 800.0 99.3% 75-125 <br /> (STK2137140-002) MSD ug/L 800.0 88.0% 75-125 <br /> MSRPD ug/L 4000 12.0% <20.0 <br /> 200.7 05/24/21:207767AC CCV ppm 1.000 93.0% 90-110 <br /> CCB ppm -0.0005 0.02 <br /> CCV ppm 1.000 95.5% 90-110 <br /> CCB PPM -0.0004 0.02 <br /> Wet Chem <br /> Alkalinity(as CaCO3) 2320B (VI 2143710-001) Du mg/L 0.07% 10 <br /> 23206 05/28/21:208034AMM CCV mg/L 235.8 96.0% 90-110 <br /> CCV mg/L 235.8 97.8% 90-110 <br /> Bicarbonate 2320B (VI 2143710-001) Du mg/L 0.1% 10 <br /> Carbonate 2320B (Vt 2143710-001) Dup mg/L 0.0 10 <br /> Hydroxide 2320B (VI 2143710-001) Du mg/L 0.0 10 <br /> Conductivity 2510B 05/28/21:208005sta ICB umbos/cm 0.11 l <br /> CCV umhos/cm 1000 103% 95-105 <br /> CCV umhos/cm 1000 102% 95-105 <br /> E.C. 25108 05/28/21:205946sta Blank umhos/cm ND <I <br /> (CH 2173468-002) Dup umhos/cm 0.2% 5 <br /> Total Dissolved Solids(TFR) 2540CE 05/21/21:205653CTL Blank mg/L ND <20 <br /> LCS mg/L 995.0 96.6% 90-110 <br /> (STK2136998-002) Dup mg/L 1.3% 5 <br /> (STK2136998-002) Dup mg/L 1.8% 5 <br /> Chloride 300.0 06/09/21:206443MCA Blank mg/L ND <1 <br /> LCS mg/L 25.00 102% 90-110 <br /> MS mg/L 50.00 96.5% 85-121 <br /> (CH 2173960-001) MSD mg/L 50.00 97.1 % 85-121 <br /> MSRPD I mg/L 10.00 0.4% 1 <19 <br /> 300.0 06/10/21:208775MCA CCB mg/L 0.08 1 <br /> CCV mg/L 25.00 98.2% 90-110 <br /> CCB mg/L 0.08 1 <br /> CCV mg/L 25.00 98.2% 90-110 <br /> Fluoride 300.0 06/09/21:206443MCA Blank mg/L ND <0.1 <br /> LCS mg/L 2.500 102% 90-110 <br /> MS mg/L 5.000 104% 87-120 <br /> (CH 2173960-001) MSD mg/L 5.000 104% 87-120 <br /> MSRPD mg/L 10.00 1 0.2% <16 <br /> 300.0 06/10/21:208775MCA CCB mg/L 0.000 0.1 <br /> CCV mg/L 2.500 98.4% 90-110 <br /> CCB mg/L 0.000 0.1 <br /> CCV mg/L 2.500 98.3% 90-110 <br /> Sulfate 300.0 06/09/21:206443MCA Blank mg/L ND <0.5 <br /> LCS mg/L 50.00 102% 90-110 <br /> MS mg/L 100.0 102% 82-124 <br /> (CH 2173960-001) MSD mg/L 100.0 103% 82-124 <br /> MSRPD mg/L 10.00 0.7% 1 <23 <br /> 300.0 06/10/21:208775MCA CCB mg/L 0.125 0.5 <br /> CCV mg/L 50.00 98.9% 90-110 <br /> CCB mg/L 0.138 0.5 <br /> CCV mg/L 50.00 98.8% 90-110 <br /> Nitrate+Nitrite as N 450ONO3F 05/20/21:205642VVH Blank mg/L ND <0.2 <br /> LCS mg/L 11.22 96.7% 80-120 <br /> MS I mg/L 1 5.609 95.8% 1 5-285 <br /> Page 7of8 <br />