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July 18, 2024 <br /> Lab No. : STK2450035 <br /> San Joaquin County EHD <br /> Customer No. : 3017919 <br /> Quality Control -Wet Chem <br /> Wet Chem <br /> Alkalinity(as CaCO3) 2320B (STK2450080-001) Dup mg/L 12.9% 10 440 <br /> Bicarbonate 2320B (STK2450080-001) Dup mg/L 12.8% 10 440 <br /> Carbonate 2320B (STK2450080-001) Dup mg/L 0% 10 <br /> E.C. 2320B (STK2450080-001) Dup umhos/cm 3.23% 5 <br /> Hydroxide 2320B (STK2450080-001) Dup mg/L 0% 10 <br /> Solids,Total Dissolved 2540CE 07/11/2024:207661CTL Blank mg/L ND <20 <br /> LCS mg/L 990.5 98.1% 90-110 <br /> (VI 2445603-001) Dup mg/L 1.70% 5 <br /> (VI 2445603-001) Dup mg/L 1.39% 5 <br /> Chloride 300.0 07/10/2024:207820LDM Blank mg/L ND <1 <br /> LCS mg/L 25.00 105% 90-110 <br /> MS mg/L 50.00 101% 67-117 <br /> (STK2439151-001) MSD mg/L 50.00 101% 67-117 <br /> MSRPD mg/L 0.2% :57 <br /> MS mg/L 50.00 103% 67-117 <br /> (STK2438833-001) MSD mg/L 50.00 105% 67-117 <br /> MSRPD mg/L 2.0% <_7 <br /> Fluoride 300.0 07/10/2024:207820LDM Blank mg/L ND <0.1 <br /> LCS mg/L 2.500 103% 90-110 <br /> MS mg/L 5.000 99.8% 89-111 <br /> (STK2439151-001) MSD mg/L 5.000 101% 89-111 <br /> MSRPD mg/L 0.7% :59 <br /> MS mg/L 5.000 100% 89-111 <br /> (STK2438833-001) MSD mg/L 5.000 101% 89-111 <br /> MSRPD mg/L 0.7% :59 <br /> Nitrate 300.0 07/10/2024:207820LDM Blank mg/L ND <0.4 <br /> LCS mg/L 20.00 105% 90-110 <br /> MS mg/L 40.00 103% 86-112 <br /> (STK2439151-001) MSD mg/L 40.00 103% 86-112 <br /> MSRPD mg/L 0.1% :57 <br /> MS mg/L 40.00 104% 86-112 <br /> (STK2438833-001) MSD mg/L 40.00 104% 86-112 <br /> MSRPD mg/L 0.3% :57 <br /> Nitrate+Nitrite as N 300.0 07/10/2024:207820LDM Blank mg/L ND <0.4 <br /> LCS mg/L 20.00 105% 90-110 <br /> MS mg/L 40.00 103% 86-112 <br /> (STK2439151-001) MSD mg/L 40.00 103% 86-112 <br /> MSRPD mg/L 0.1% :57 <br /> MS mg/L 40.00 104% 86-112 <br /> (STK2438833-001) MSD mg/L 40.00 104% 86-112 <br /> MSRPD mg/L 0.3% :57 <br /> Nitrate Nitrogen 300.0 07/10/2024:207820LDM Blank mg/L ND <0.1 <br /> LCS mg/L 4.518 105% 90-110 <br /> MS mg/L 9.036 103% 86-112 <br /> (STK2439151-001) MSD mg/L 9.036 103% 86-112 <br /> MSRPD mg/L 0.1% :57 <br /> MS mg/L 9.036 104% 86-112 <br /> (STK2438833-001) MSD mg/L 9.036 104% 86-112 <br /> MSRPD mg/L 0.3% :57 <br /> Nitrite as Nitrogen 300.0 07/10/2024:207820LDM Blank mg/L ND <0.1 <br /> Page 7 of 8 Page 7 of 8 <br />