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August 4, 2022 <br /> Lab No. : STK2239886 <br /> San Joaquin County EHD <br /> Customer No. : 3017919 <br /> Quality Control -Wet Chem <br /> MMCM <br /> Wet Chem <br /> Alkalinity(as CaCO3) 2320B 07/24/2022:208288AMM ND mg/L 10 435 <br /> Bicarbonate 2320B (STK2239679-001) Dup mg/L 10 <br /> Carbonate 2320B (STK2239679-001) Dup mg/L 10 <br /> Hydroxide 2320B (STK2239679-001) Dup mg/L 10 <br /> E.C. 2510B 07/20/2022:208129STA Blank umhos/cm ND <1 <br /> (SP 2211414-002) Dup umhos/cm 0.5% 5 <br /> Solids,Total Dissolved 2540CE 07/18/2022:208017CTL Blank mg/L 1 <20 <br /> LCS mg/L 990.8 100% 90-110 <br /> (CC 2282680-001) Dup mg/L 3.9% 5 <br /> (CC 2282680-001) Dup mg/L 2.4% 5 <br /> Chloride 300.0 07/14/2022:207882NJB Blank mg/L ND <1 <br /> LCS mg/L 25.00 99.4% 90-110 <br /> MS mg/L 50.00 89.1 % 85-121 <br /> (STK2238931-003) MSD mg/L 50.00 97.8% 85-121 <br /> MSRPD mg/L 10.00 8.4% :519 <br /> MS mg/L 50.00 48.1 % 85-121 435 <br /> (CC 2282530-003) MSD mg/L 50.00 53.1 % 85-121 435 <br /> MSRPD mg/L 10.00 2.2% :519 <br /> Fluoride 300.0 07/14/2022:207882NJB Blank mg/L ND <0.1 <br /> LCS mg/L 2.500 99.1 % 90-110 <br /> MS mg/L 5.000 91.4% 87-120 <br /> (STK2238931-003) MSD mg/L 5.000 100% 87-120 <br /> MSRPD mg/L 10.00 9.0% <_16 <br /> MS mg/L 5.000 95.5% 87-120 <br /> (CC 2282530-003) MSD mg/L 5.000 102% 87-120 <br /> MSRPD mg/L 10.00 6.3% :516 <br /> Nitrate 300.0 07/14/2022:207882NJB Blank mg/L ND <0.4 <br /> LCS mg/L 20.00 98.0% 90-110 <br /> MS mg/L 40.00 90.0% 85-119 <br /> (STK2238931-003) MSD mg/L 40.00 98.7% 85-119 <br /> MSRPD mg/L 10.00 8.7% :519 <br /> MS mg/L 40.00 92.7% 85-119 <br /> (CC 2282530-003) MSD mg/L 40.00 98.9% 85-119 <br /> MSRPD mg/L 10.00 5.4% :519 <br /> Nitrate+Nitrite as N 300.0 07/14/2022:207882NJB Blank mg/L ND <0.4 <br /> LCS mg/L 20.00 98.0% 90-110 <br /> MS mg/L 40.00 90.0% 85-119 <br /> (STK2238931-003) MSD mg/L 40.00 98.7% 85-119 <br /> MSRPD mg/L 10.00 8.7% :519 <br /> MS mg/L 40.00 92.7% 85-119 <br /> (CC 2282530-003) MSD mg/L 40.00 98.9% 85-119 <br /> MSRPD mg/L 10.00 5.4% 1519 <br /> Nitrate Nitrogen 300.0 07/14/2022:207882NJB Blank mg/L ND <0.4 <br /> LCS mg/L 20.00 98.0% 90-110 <br /> MS mg/L 40.00 90.0% 85-119 <br /> (STK2238931-003) MSD mg/L 40.00 98.7% 85-119 <br /> MSRPD mg/L 10.00 8.7% :519 <br /> MS mg/L 40.00 92.7% 85-119 <br /> (CC 2282530-003) MSD mg/L 40.00 98.9% 85-119 <br /> MSRPD mg/L 10.00 5.4% :519 <br /> Page 6 of 7 Page 6 of 7 <br />