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August 12, 2022 <br /> Lab No. : STK2250522 <br /> San Joaquin County EHD <br /> Customer No. : 3017919 <br /> Quality Control -Wet Chem <br /> MMCM <br /> Wet Chem <br /> Alkalinity(as CaCO3) 2320B 08/01/2022:208624AMM ND mg/L 0.1% 10 435 <br /> Bicarbonate 2320B (SP 2211878-001) Dup mg/L 0.1% 10 <br /> E.C. 2510B 08/08/2022:208898STA Blank umhos/cm ND <1 <br /> (SP 2212506-001) Dup umhos/cm 0.5% 5 <br /> Solids,Total Dissolved 2540CE 07/28/2022:208499CTL Blank mg/L ND <20 <br /> LCS mg/L 990.8 97.4% 90-110 <br /> (CH 2276248-001) Dup mg/L 0.8% 5 <br /> (CH 2276248-001) Dup mg/L 2.4% 5 <br /> Chloride 300.0 07/27/2022:208452MCA Blank mg/L ND <1 <br /> LCS mg/L 25.00 98.7% 90-110 <br /> MS mg/L 50.00 97.8% 85-121 <br /> (STK2239696-001) MSD mg/L 50.00 99.7% 85-121 <br /> MSRPD mg/L 10.00 1.9% :519 <br /> MS mg/L 50.00 99.0% 85-121 <br /> (VI 2245649-001) MSD mg/L 50.00 99.3% 85-121 <br /> MSRPD mg/L 10.00 0.3% :519 <br /> Fluoride 300.0 07/27/2022:208452MCA Blank mg/L ND <0.1 <br /> LCS mg/L 2.500 98.8% 90-110 <br /> MS mg/L 5.000 99.8% 87-120 <br /> (STK2239696-001) MSD mg/L 5.000 102% 87-120 <br /> MSRPD mg/L 10.00 1.7% :516 <br /> MS mg/L 5.000 101 % 87-120 <br /> (VI 2245649-001) MSD mg/L 5.000 101 % 87-120 <br /> MSRPD mg/L 10.00 0.3% :516 <br /> Nitrate 300.0 07/27/2022:208452MCA Blank mg/L ND <0.4 <br /> LCS mg/L 20.00 98.1 % 90-110 <br /> MS mg/L 40.00 98.2% 85-119 <br /> (STK2239696-001) MSD mg/L 40.00 100% 85-119 <br /> MSRPD mg/L 10.00 1.9% :519 <br /> MS mg/L 40.00 99.9% 85-119 <br /> (VI 2245649-001) MSD mg/L 40.00 100% 85-119 <br /> MSRPD mg/L 10.00 0.3% :519 <br /> Nitrate+Nitrite as N 300.0 07/27/2022:208452MCA Blank mg/L ND <0.4 <br /> LCS mg/L 20.00 98.1 % 90-110 <br /> MS mg/L 40.00 98.2% 85-119 <br /> (STK2239696-001) MSD mg/L 40.00 100% 85-119 <br /> MSRPD mg/L 10.00 1.9% :519 <br /> MS mg/L 40.00 99.9% 85-119 <br /> (VI 2245649-001) MSD mg/L 40.00 100% 85-119 <br /> MSRPD mg/L 10.00 0.3% :519 <br /> Nitrate Nitrogen 300.0 07/27/2022:208452MCA Blank mg/L ND <0.4 <br /> LCS mg/L 20.00 98.1 % 90-110 <br /> MS mg/L 40.00 98.2% 85-119 <br /> (STK2239696-001) MSD mg/L 40.00 100% 85-119 <br /> MSRPD mg/L 10.00 1.9% :519 <br /> MS mg/L 40.00 99.9% 85-119 <br /> (VI 2245649-001) MSD mg/L 40.00 100% 85-119 <br /> MSRPD mg/L 10.00 0.3% :519 <br /> Nitrite as Nitrogen 300.0 07/27/2022:208452MCA Blank mg/L 1 <0.4 <br /> LCS mg/L 15.00 101 % 90-110 <br /> Page 6 of 7 Page 6 of 7 <br />