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July 26, 2022 <br /> Lab No. : STK223927O <br /> San Joaquin County EHD <br /> Customer No. : 3017919 <br /> Quality Control -Wet Chem <br /> Wet Chem <br /> Alkalinity(as CaCO3) 2320B 07/17/2022:208005AMM ND mg/L 0.6% 10 <br /> Bicarbonate 2320B (STK2239270-001) Dup mg/L 0.8% 10 <br /> E.C. 2510B 07/12/2022:207765STA Blank umhos/cm ND <1 <br /> (SP 2211063-002) Dup umhos/cm 0.4% 5 <br /> Solids,Total Dissolved 2540CE 07/07/2022:207590CTL Blank mg/L ND <20 <br /> LCS mg/L 990.8 100% 90-110 <br /> (CC 2282531-001) Dup mg/L 0.4% 5 <br /> (CC 2282531-001) Dup mg/L 0.6% 5 <br /> Chloride 300.0 07/06/2022:207565NJB Blank mg/L ND <1 <br /> LCS mg/L 25.00 98.1 % 90-110 <br /> MS mg/L 50.00 81.4% 85-121 435 <br /> (CH 2273879-004) MSD mg/L 50.00 81.4% 85-121 435 <br /> MSRPD mg/L 10.00 0.02% :519 <br /> MS mg/L 50.00 79.4% 85-121 435 <br /> (VI 2244586-015) MSD mg/L 50.00 79.5% 85-121 435 <br /> MSRPD mg/L 10.00 0.03% 5519 <br /> Fluoride 300.0 07/06/2022:207565NJB Blank mg/L ND <0.1 <br /> LCS mg/L 2.500 98.4% 90-110 <br /> MS mg/L 5.000 97.4% 87-120 <br /> (CH 2273879-004) MSD mg/L 5.000 96.8% 87-120 <br /> MSRPD mg/L 10.00 0.6% :516 <br /> MS mg/L 5.000 97.0% 87-120 <br /> (VI 2244586-015) MSD mg/L 5.000 96.7% 87-120 <br /> MSRPD mg/L 10.00 0.3% 5_16 <br /> Nitrate 300.0 07/06/2022:207565NJB Blank mg/L ND <0.4 <br /> LCS mg/L 20.00 97.2% 90-110 <br /> MS mg/L 40.00 95.3% 85-119 <br /> (CH 2273879-004) MSD mg/L 40.00 95.2% 85-119 <br /> MSRPD mg/L 10.00 0.08% :519 <br /> MS mg/L 40.00 95.4% 85-119 <br /> (VI 2244586-015) MSD mg/L 40.00 95.4% 85-119 <br /> MSRPD mg/L 10.00 0.005% :519 <br /> Nitrate+Nitrite as N 300.0 07/06/2022:207565NJB Blank mg/L ND <0.4 <br /> LCS mg/L 20.00 97.2% 90-110 <br /> MS mg/L 40.00 95.3% 85-119 <br /> (CH 2273879-004) MSD mg/L 40.00 95.2% 85-119 <br /> MSRPD mg/L 10.00 0.08% :519 <br /> MS mg/L 40.00 95.4% 85-119 <br /> (VI 2244586-015) MSD mg/L 40.00 95.4% 85-119 <br /> MSRPD mg/L 10.00 0.005% :519 <br /> Nitrate Nitrogen 300.0 07/06/2022:207565NJB Blank mg/L ND <0.4 <br /> LCS mg/L 20.00 97.2% 90-110 <br /> MS mg/L 40.00 95.3% 85-119 <br /> (CH 2273879-004) MSD mg/L 40.00 95.2% 85-119 <br /> MSRPD mg/L 10.00 0.08% 5519 <br /> MS mg/L 40.00 95.4% 85-119 <br /> (VI 2244586-015) MSD mg/L 40.00 95.4% 85-119 <br /> MSRPD mg/L 10.00 0.005% :519 <br /> Nitrite as Nitrogen 300.0 07/06/2022:207565NJB Blank mg/L ND <0.4 <br /> LCS mg/L 15.00 98.5% 90-110 <br /> Page 6 of 7 Page 6 of 7 <br />