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August 12, 2022 <br /> Lab No. : STK2250321 <br /> San Joaquin County EHD <br /> Customer No. : 3017919 <br /> Quality Control -Wet Chem <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 07/26/2022:208298STA Blank umhos/cm ND <1 <br /> (SP 2211884-001) Dup umhos/cm 0.5% 5 <br /> Solids,Total Dissolved 2540CE 07/25/2022:208309CTL Blank mg/L ND <20 <br /> LCS mg/L 990.8 99.1 % 90-110 <br /> (SP 2211819-001) Dup mg/L 3.9% 5 <br /> (SP 2211819-001) Dup mg/L 1.2% 5 <br /> Chloride 300.0 07/22/2022:208247NJB Blank mg/L ND <1 <br /> LCS mg/L 25.00 99.9% 90-110 <br /> MS mg/L 50.00 98.3% 85-121 <br /> (VI 2244882-004) MSD mg/L 50.00 95.3% 85-121 <br /> MSRPD mg/L 10.00 2.6% :519 <br /> MS mg/L 50.00 95.6% 85-121 <br /> (VI 2245097-004) MSD mg/L 50.00 94.0% 85-121 <br /> MSRPD mg/L 10.00 1.2% 5519 <br /> Fluoride 300.0 07/22/2022:208247NJB Blank mg/L ND <0.1 <br /> LCS mg/L 2.500 102% 90-110 <br /> MS mg/L 5.000 102% 87-120 <br /> (VI 2244882-004) MSD mg/L 5.000 99.1 % 87-120 <br /> MSRPD mg/L 10.00 3.1% :516 <br /> MS mg/L 5.000 95.8% 87-120 <br /> (VI 2245097-004) MSD mg/L 5.000 96.2% 87-120 <br /> MSRPD mg/L 10.00 0.4% 5_16 <br /> Nitrate 300.0 07/22/2022:208247NJB Blank mg/L ND <0.4 <br /> LCS mg/L 20.00 99.0% 90-110 <br /> MS mg/L 40.00 96.8% 85-119 <br /> (VI 2244882-004) MSD mg/L 40.00 93.7% 85-119 <br /> MSRPD mg/L 10.00 2.3% :519 <br /> MS mg/L 40.00 100% 85-119 <br /> (VI 2245097-004) MSD mg/L 40.00 98.4% 85-119 <br /> MSRPD mg/L 10.00 1.6% :519 <br /> Nitrate+Nitrite as N 300.0 07/22/2022:208247NJB Blank mg/L ND <0.4 <br /> LCS mg/L 20.00 99.0% 90-110 <br /> MS mg/L 40.00 96.8% 85-119 <br /> (VI 2244882-004) MSD mg/L 40.00 93.7% 85-119 <br /> MSRPD mg/L 10.00 2.3% :519 <br /> MS mg/L 40.00 100% 85-119 <br /> (VI 2245097-004) MSD mg/L 40.00 98.4% 85-119 <br /> MSRPD mg/L 10.00 1.6% :519 <br /> Nitrate Nitrogen 300.0 07/22/2022:208247NJB Blank mg/L ND <0.4 <br /> LCS mg/L 20.00 99.0% 90-110 <br /> MS mg/L 40.00 96.8% 85-119 <br /> (VI 2244882-004) MSD mg/L 40.00 93.7% 85-119 <br /> MSRPD mg/L 10.00 2.3% 5519 <br /> MS mg/L 40.00 100% 85-119 <br /> (VI 2245097-004) MSD mg/L 40.00 98.4% 85-119 <br /> MSRPD mg/L 10.00 1.6% :519 <br /> Nitrite as Nitrogen 300.0 07/22/2022:208247NJB Blank mg/L ND <0.4 <br /> LCS mg/L 15.00 101 % 90-110 <br /> Page 7 of 8 Page 7 of 8 <br />