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November 4, 2022 <br /> Lab No. : STK2255140 <br /> San Joaquin County EHD <br /> Customer No. : 3017919 <br /> Quality Control -Wet Chem <br /> Wet Chem <br /> Alkalinity(as CaCO3) 2320B 10/24/2022:212140AMM ND mg/L 1.77% 10 435 <br /> Bicarbonate 2320B (SP 2216615-004) Dup mg/L 1.74% 10 <br /> E.C. 2320B (SP 2216615-004) Dup umhos/cm 0.2% 5 <br /> Solids,Total Dissolved 2540CE 10/24/2022:212093CTL Blank mg/L ND <20 <br /> LCS mg/L 990.8 103% 90-110 <br /> (SP 2216875-001) Dup mg/L 0.3% 5 <br /> (SP 2216875-001) Dup mg/L 1.7% 5 <br /> Chloride 300.0 10/21/2022:212090LDM Blank mg/L ND <1 <br /> LCS mg/L 25.00 99.1 % 90-110 <br /> MS mg/L 50.00 99.4% 85-121 <br /> (CC 2283719-003) MSD mg/L 50.00 90.1 % 85-121 <br /> MSRPD mg/L 10.00 7.2% 5519 <br /> MS mg/L 50.00 98.0% 85-121 <br /> (CC 2283793-001) MSD mg/L 50.00 99.1 % 85-121 <br /> MSRPD mg/L 10.00 1.0% 5519 <br /> Fluoride 300.0 10/21/2022:212090LDM Blank mg/L ND <0.1 <br /> LCS mg/L 2.500 99.6% 90-110 <br /> MS mg/L 5.000 105% 87-120 <br /> (CC 2283719-003) MSD mg/L 5.000 95.3% 87-120 <br /> MSRPD mg/L 10.00 9.4% 5_16 <br /> MS mg/L 5.000 99.9% 87-120 <br /> (CC 2283793-001) MSD mg/L 5.000 101 % 87-120 <br /> MSRPD mg/L 10.00 1.4% .516 <br /> Nitrate 300.0 10/21/2022:212090LDM Blank mg/L ND <0.4 <br /> LCS mg/L 20.00 99.0% 90-110 <br /> MS mg/L 40.00 105% 85-119 <br /> (CC 2283719-003) MSD mg/L 40.00 95.0% 85-119 <br /> MSRPD mg/L 10.00 9.4% :519 <br /> MS mg/L 40.00 100% 85-119 <br /> (CC 2283793-001) MSD mg/L 40.00 101 % 85-119 <br /> MSRPD mg/L 10.00 1.1% 5519 <br /> Nitrate+Nitrite as N 300.0 10/21/2022:212090LDM Blank mg/L ND <0.4 <br /> LCS mg/L 20.00 99.0% 90-110 <br /> MS mg/L 40.00 105% 85-119 <br /> (CC 2283719-003) MSD mg/L 40.00 95.0% 85-119 <br /> MSRPD mg/L 10.00 9.4% :519 <br /> MS mg/L 40.00 100% 85-119 <br /> (CC 2283793-001) MSD mg/L 40.00 101 % 85-119 <br /> MSRPD mg/L 10.00 1.1% :519 <br /> Nitrate Nitrogen 300.0 10/21/2022:212090LDM Blank mg/L ND <0.4 <br /> LCS mg/L 20.00 99.0% 90-110 <br /> MS mg/L 40.00 105% 85-119 <br /> (CC 2283719-003) MSD mg/L 40.00 95.0% 85-119 <br /> MSRPD mg/L 10.00 9.4% :519 <br /> MS mg/L 40.00 100% 85-119 <br /> (CC 2283793-001) MSD mg/L 40.00 101 % 85-119 <br /> MSRPD mg/L 10.00 1.1% :519 <br /> Nitrite as Nitrogen 300.0 10/21/2022:212090LDM Blank mg/L ND <0.4 <br /> LCS mg/L 15.00 99.7% 90-110 <br /> MS mg/L 30.00 104% 74-126 <br /> Page 6 of 7 Page 6 of 7 <br />