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May 5, 2023 <br /> Lab No. : STK2335191 <br /> San Joaquin County EHD <br /> Customer No. : 3017919 <br /> Quality Control -Wet Chem <br /> Wet Chem <br /> Alkalinity(as CaCO3) 2320B 05/02/2023:204734AMM ND mg/L 0.2% 10 435 <br /> Bicarbonate 2320B (VI 2342537-001) Dup mg/L 0.1% 10 <br /> E.C. 2320B (VI 2342537-001) Dup umhos/cm 0% 5 <br /> Solids,Total Dissolved 2540CE 04/28/2023:204582CTL Blank mg/L ND <20 <br /> LCS mg/L 993.7 96.5% 90-110 <br /> (SP 2306442-002) Dup mg/L 0.9% 5 <br /> (SP 2306442-002) Dup mg/L 1.27% 5 <br /> Chloride 300.0 04/27/2023:204655LDM Blank mg/L 1 <1 <br /> LCS mg/L 25.00 101 % 90-110 <br /> MS mg/L 50.00 97.7% 85-121 <br /> (VI 2342483-002) MSD mg/L 50.00 100% 85-121 <br /> MSRPD mg/L 10.00 2.1% 5519 <br /> MS mg/L 50.00 96.7% 85-121 <br /> (VI 2342476-001) MSD mg/L 50.00 98.6% 85-121 <br /> MSRPD mg/L 10.00 1.5% 5519 <br /> Fluoride 300.0 04/27/2023:204655LDM Blank mg/L ND <0.1 <br /> LCS mg/L 2.500 102% 90-110 <br /> MS mg/L 5.000 103% 87-120 <br /> (VI 2342483-002) MSD mg/L 5.000 106% 87-120 <br /> MSRPD mg/L 10.00 3.1% 5_16 <br /> MS mg/L 5.000 103% 87-120 <br /> (VI 2342476-001) MSD mg/L 5.000 106% 87-120 <br /> MSRPD mg/L 10.00 2.1% .516 <br /> Nitrate 300.0 04/27/2023:204655LDM Blank mg/L ND <0.4 <br /> LCS mg/L 20.00 102% 90-110 <br /> MS mg/L 40.00 82.5% 85-119 435 <br /> (VI 2342483-002) MSD mg/L 40.00 84.8% 85-119 <br /> MSRPD mg/L 10.00 1.1% :519 <br /> MS mg/L 40.00 82.7% 85-119 435 <br /> (VI 2342476-001) MSD mg/L 40.00 84.3% 85-119 435 <br /> MSRPD mg/L 10.00 0.8% 5519 <br /> Nitrate+Nitrite as N 300.0 04/27/2023:204655LDM Blank mg/L ND <0.4 <br /> LCS mg/L 20.00 102% 90-110 <br /> MS mg/L 40.00 82.5% 85-119 435 <br /> (VI 2342483-002) MSD mg/L 40.00 84.8% 85-119 <br /> MSRPD mg/L 10.00 1.1% :519 <br /> MS mg/L 40.00 82.7% 85-119 435 <br /> (VI 2342476-001) MSD mg/L 40.00 84.3% 85-119 435 <br /> MSRPD mg/L 10.00 0.8% :519 <br /> Nitrate Nitrogen 300.0 04/27/2023:204655LDM Blank mg/L ND <0.4 <br /> LCS mg/L 20.00 102% 90-110 <br /> MS mg/L 40.00 82.5% 85-119 435 <br /> i (VI 2342483-002) MSD mg/L 40.00 84.8% 85-119 <br /> MSRPD mg/L 10.00 1.1% :519 <br /> MS mg/L 40.00 82.7% 85-119 435 <br /> (VI 2342476-001) MSD mg/L 40.00 84.3% 85-119 435 <br /> MSRPD mg/L 10.00 0.8% :519 <br /> Nitrite as Nitrogen 300.0 04/27/2023:204655LDM Blank mg/L 1 <0.4 <br /> LCS mg/L 15.00 102% 90-110 <br /> MS mg/L 30.00 103% 74-126 <br /> Page 6 of 7 Page 6 of 7 <br />