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August 12, 2022 <br /> Lab No. : STK2250366 <br /> San Joaquin County EHD <br /> Customer No. : 3017919 <br /> Quality Control -Wet Chem <br /> MMCM <br /> Wet Chem <br /> Alkalinity(as CaCO3) 2320B 07/29/2022:208578AMM ND mg/L 1.09% 10 <br /> Bicarbonate 2320B (VI 2245634-002) Dup mg/L 1.05% 10 <br /> E.C. 2510B 07/27/2022:208422STA Blank umhos/cm ND <1 <br /> (SP 2211626-002) Dup umhos/cm 0.9% 5 <br /> Solids,Total Dissolved 2540CE 07/26/2022:208369CTL Blank mg/L ND <20 <br /> LCS mg/L 990.8 98.5% 90-110 <br /> (VI 2245575-002) Dup mg/L 1.3% 5 <br /> Chloride 300.0 07/29/2022:208562MCA Blank mg/L 1 <1 <br /> LCS mg/L 25.00 99.8% 90-110 <br /> MS mg/L 50.00 98.3% 85-121 <br /> (STK2250366-001) MSD mg/L 50.00 99.0% 85-121 <br /> MSRPD mg/L 10.00 0.6% :519 <br /> MS mg/L 50.00 96.5% 85-121 <br /> (VI 2245598-001) MSD mg/L 50.00 97.8% 85-121 <br /> MSRPD mg/L 10.00 1.1% :519 <br /> Fluoride 300.0 07/29/2022:208562MCA Blank mg/L ND <0.1 <br /> LCS mg/L 2.500 99.8% 90-110 <br /> MS mg/L 5.000 102% 87-120 <br /> (STK2250366-001) MSD mg/L 5.000 103% 87-120 <br /> MSRPD mg/L 10.00 0.7% :_16 <br /> MS mg/L 5.000 100% 87-120 <br /> (VI 2245598-001) MSD mg/L 5.000 102% 87-120 <br /> MSRPD mg/L 10.00 1.5% :516 <br /> Sulfate 300.0 07/29/2022:208562MCA Blank mg/L ND <0.5 <br /> LCS mg/L 50.00 104% 90-110 <br /> MS mg/L 100.0 102% 82-124 <br /> (STK2250366-001) MSD mg/L 100.0 103% 82-124 <br /> MSRPD mg/L 10.00 0.7% :523 <br /> MS mg/L 100.0 100% 82-124 <br /> (VI 2245598-001) MSD mg/L 100.0 102% 82-124 <br /> MSRPD mg/L 10.00 1.3% :523 <br /> Nitrite as Nitrogen 4500NO2B 07/23/2022:208398AMM MS mg/L 0.2284 97.9% 1-173 <br /> (CH 2276071-001) MSD mg/L 0.2284 95.6% 1-173 <br /> MSRPD mg/L 0.2284 2.4% :520 <br /> Nitrate 4500NO3F 07/25/2022:208316LFS Blank mg/L ND <0.2 <br /> LCS mg/L 11.22 96.7% 80-120 <br /> MS mg/L 5.609 97.1% 66-125 <br /> (CC 2282828-001) MSD mg/L 5.609 97.3% 66-125 <br /> MSRPD mg/L 5.609 0.1% :530.4 <br /> Nitrate+Nitrite as N 4500NO3F 07/25/2022:208316LFS Blank mg/L ND <0.2 <br /> LCS mg/L 11.22 96.7% 80-120 <br /> MS mg/L 5.609 97.1% 66-125 <br /> (CC 2282828-001) MSD mg/L 5.609 97.3% 66-125 <br /> MSRPD mg/L 5.609 0.1% :00.4 <br /> Nitrate Nitrogen 4500NO3F 07/25/2022:208316LFS Blank mg/L ND <0.2 <br /> LCS mg/L 11.22 96.7% 80-120 <br /> MS mg/L 5.609 97.1% 66-125 <br /> (CC 2282828-001) MSD mg/L 5.609 97.3% 66-125 <br /> MSRPD mg/L 5.609 0.1% :_30.4 <br /> MBAS 5540C 07/23/2022:208636AMM Blank mg/L ND <0.05 <br /> Page 7 of 8 Page 7 of 8 <br />