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November 14, 2023 <br /> Lab No. : STK2355068 <br /> San Joaquin County EHD <br /> Customer No. : 3017919 <br /> Quality Control -Wet Chem <br /> Wet Chem <br /> Alkalinity(as CaCO3) 2320B 11/01/2023:212416AMM ND mg/L 0.02% 10 406 <br /> Bicarbonate 2320B (SP 2317920-012) Dup mg/L 0% 10 <br /> E.C. 2320B (SP 2317920-012) Dup umhos/cm 0% 5 <br /> Solids,Total Dissolved 2540CE 11/02/2023:212436CTL Blank mg/L ND <20 <br /> LCS mg/L 991.5 96.7% 90-110 <br /> (VI 2347344-001) Dup mg/L 0.2% 5 <br /> (VI 2347344-001) Dup mg/L 0.1% 5 <br /> Chloride 300.0 11/01/2023:212422LDM Blank mg/L ND <1 <br /> LCS mg/L 25.00 95.5% 90-110 <br /> MS mg/L 50.00 96.5% 67-117 <br /> (STK2354963-002) MSD mg/L 50.00 96.5% 67-117 <br /> MSRPD mg/L 0.0% <_7 <br /> MS mg/L 50.00 98.0% 67-117 <br /> (STK2354963-003) MSD mg/L 50.00 98.2% 67-117 <br /> MSRPD mg/L 0.2% :57 <br /> Fluoride 300.0 11/01/2023:212422LDM Blank mg/L ND <0.1 <br /> LCS mg/L 2.500 94.9% 90-110 <br /> MS mg/L 5.000 99.8% 89-111 <br /> (STK2354963-002) MSD mg/L 5.000 99.6% 89-111 <br /> MSRPD mg/L 0.2% :59 <br /> MS mg/L 5.000 99.4% 89-111 <br /> (STK2354963-003) MSD mg/L 5.000 99.2% 89-111 <br /> MSRPD mg/L 0.2% :59 <br /> Nitrate 300.0 11/01/2023:212422LDM Blank mg/L ND <0.4 <br /> LCS mg/L 20.00 95.2% 90-110 <br /> MS mg/L 40.00 94.3% 86-112 <br /> (STK2354963-002) MSD mg/L 40.00 94.3% 86-112 <br /> MSRPD mg/L 0.0% :57 <br /> MS mg/L 40.00 99.1% 86-112 <br /> (STK2354963-003) MSD mg/L 40.00 99.9% 86-112 <br /> MSRPD mg/L 0.8% <_7 <br /> Nitrate+Nitrite as N 300.0 11/01/2023:212422LDM Blank mg/L ND <0.4 <br /> LCS mg/L 20.00 95.2% 90-110 <br /> MS mg/L 40.00 94.3% 86-112 <br /> (STK2354963-002) MSD mg/L 40.00 94.3% 86-112 <br /> MSRPD mg/L 0.0% :57 <br /> MS mg/L 40.00 99.1% 86-112 <br /> (STK2354963-003) MSD mg/L 40.00 99.9% 86-112 <br /> MSRPD mg/L 0.8% :57 <br /> Nitrate Nitrogen 300.0 11/01/2023:212422LDM Blank mg/L ND <0.4 <br /> LCS mg/L 20.00 95.2% 90-110 <br /> MS mg/L 40.00 94.3% 86-112 <br /> (STK2354963-002) MSD mg/L 40.00 94.3% 86-112 <br /> MSRPD mg/L 0.0% <_7 <br /> MS mg/L 40.00 99.1% 86-112 <br /> (STK2354963-003) MSD mg/L 40.00 99.9% 86-112 <br /> MSRPD mg/L 0.8% :57 <br /> Nitrite as Nitrogen 300.0 11/01/2023:212422LDM Blank mg/L ND <0.4 <br /> LCS mg/L 15.00 95.0% 90-110 <br /> MS mg/L 30.00 99.2% 88-111 <br /> Page 6 of 7 Page 6 of 7 <br />