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November 7, 2023 <br /> Lab No. : STK2354793 <br /> San Joaquin County EHD <br /> Customer No. : 3017919 <br /> Quality Control -Wet Chem <br /> Wet Chem <br /> Alkalinity(as CaCO3) 2320B 10/29/2023:212235AMM ND mg/L 1.07% 10 406 <br /> Bicarbonate 2320B (CH 2379148-001) Dup mg/L 1.02% 10 <br /> E.C. 2320B (CH 2379148-001) Dup umhos/cm 0.8% 5 <br /> Solids,Total Dissolved 2540CE 10/25/2023:212078CTL Blank mg/L ND <20 <br /> LCS mg/L 991.5 102% 90-110 <br /> (SP 2318004-001) Dup mg/L 0.9% 5 <br /> (SP 2318004-001) Dup mg/L 0.9% 5 <br /> Chloride 300.0 10/25/2023:212184LDM Blank mg/L ND <1 <br /> LCS mg/L 25.00 98.9% 90-110 <br /> MS mg/L 50.00 78.8% 67-117 <br /> (SP 2317971-001) MSD mg/L 50.00 76.2% 67-117 <br /> MSRPD mg/L 40.00 1.2% <_7 <br /> MS mg/L 50.00 96.5% 67-117 <br /> (SP 2317950-001) MSD mg/L 50.00 96.5% 67-117 <br /> MSRPD mg/L 5.000 0.03% :57 <br /> Fluoride 300.0 10/25/2023:212184LDM Blank mg/L ND <0.1 <br /> LCS mg/L 2.500 98.6% 90-110 <br /> MS mg/L 5.000 97.8% 89-111 <br /> (SP 2317971-001) MSD mg/L 5.000 97.6% 89-111 <br /> MSRPD mg/L 40.00 0.2% :59 <br /> MS mg/L 5.000 100% 89-111 <br /> (SP 2317950-001) MSD mg/L 5.000 100% 89-111 <br /> MSRPD mg/L 5.000 0.02% :59 <br /> Nitrate 300.0 10/25/2023:212184LDM Blank mg/L ND <0.4 <br /> LCS mg/L 20.00 98.6% 90-110 <br /> MS mg/L 40.00 97.2% 86-112 <br /> (SP 2317971-001) MSD mg/L 40.00 97.2% 86-112 <br /> MSRPD mg/L 40.00 0.03% :57 <br /> MS mg/L 40.00 98.0% 86-112 <br /> (SP 2317950-001) MSD mg/L 40.00 98.0% 86-112 <br /> MSRPD mg/L 5.000 0.02% <_7 <br /> Nitrate+Nitrite as N 300.0 10/25/2023:212184LDM Blank mg/L ND <0.4 <br /> LCS mg/L 20.00 98.6% 90-110 <br /> MS mg/L 40.00 97.2% 86-112 <br /> (SP 2317971-001) MSD mg/L 40.00 97.2% 86-112 <br /> MSRPD mg/L 40.00 0.03% :57 <br /> MS mg/L 40.00 98.0% 86-112 <br /> (SP 2317950-001) MSD mg/L 40.00 98.0% 86-112 <br /> MSRPD mg/L 5.000 0.02% :57 <br /> Nitrate Nitrogen 300.0 10/25/2023:212184LDM Blank mg/L ND <0.4 <br /> LCS mg/L 20.00 98.6% 90-110 <br /> MS mg/L 40.00 97.2% 86-112 <br /> (SP 2317971-001) MSD mg/L 40.00 97.2% 86-112 <br /> MSRPD mg/L 40.00 0.03% <_7 <br /> MS mg/L 40.00 98.0% 86-112 <br /> (SP 2317950-001) MSD mg/L 40.00 98.0% 86-112 <br /> MSRPD mg/L 5.000 0.02% :57 <br /> Nitrite as Nitrogen 300.0 10/25/2023:212184LDM Blank mg/L ND <0.4 <br /> LCS mg/L 15.00 98.4% 90-110 <br /> MS mg/L 30.00 76.3% 88-111 435 <br /> Page 6 of 7 Page 6 of 7 <br />