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July 16, 2024 <br /> Lab No. : STK2439765 <br /> San Joaquin County EHD <br /> Customer No. : 3017919 <br /> Quality Control -Wet Chem <br /> Wet Chem <br /> Alkalinity(as CaCO3) 2320B (SP 2410839-001) Dup mg/L 0.9% 10 <br /> Bicarbonate 2320B (SP 2410839-001) Dup mg/L 0.9% 10 <br /> Carbonate 2320B (SP 2410839-001) Dup mg/L 0% 10 <br /> E.C. 2320B (SP 2410839-001) Dup umhos/cm 0.3% 5 <br /> Hydroxide 2320B (SP 2410839-001) Dup mg/L 0% 10 <br /> Solids,Total Dissolved 2540CE 07/05/2024:207419CTL Blank mg/L ND <20 <br /> LCS mg/L 990.5 99.4% 90-110 <br /> (VI 2445327-004) Dup mg/L 2.32% 5 <br /> (VI 2445327-004) Dup mg/L 1.56% 5 <br /> Chloride 300.0 07/03/2024:207418LDM Blank mg/L ND <1 <br /> LCS mg/L 25.00 106% 90-110 <br /> MS mg/L 50.00 99.9% 67-117 <br /> (VI 2445366-002) MSD mg/L 50.00 100% 67-117 <br /> MSRPD mg/L 0.0% :57 <br /> MS mg/L 50.00 102% 67-117 <br /> (VI 2445363-001) MSD mg/L 50.00 103% 67-117 <br /> MSRPD mg/L 0.9% <_7 <br /> Fluoride 300.0 07/03/2024:207418LDM Blank mg/L ND <0.1 <br /> LCS mg/L 2.500 101% 90-110 <br /> MS mg/L 5.000 102% 89-111 <br /> (VI 2445366-002) MSD mg/L 5.000 101% 89-111 <br /> MSRPD mg/L 0.1% :59 <br /> MS mg/L 5.000 104% 89-111 <br /> (VI 2445363-001) MSD mg/L 5.000 105% 89-111 <br /> MSRPD mg/L 1.2% :59 <br /> Nitrate 300.0 07/03/2024:207418LDM Blank mg/L ND <0.4 <br /> LCS mg/L 20.00 105% 90-110 <br /> MS mg/L 40.00 98.5% 86-112 <br /> (VI 2445366-002) MSD mg/L 40.00 98.5% 86-112 <br /> MSRPD mg/L 0.0% :57 <br /> MS mg/L 40.00 90.4% 86-112 <br /> (VI 2445363-001) MSD mg/L 40.00 92.2% 86-112 <br /> MSRPD mg/L 1.0% :57 <br /> Nitrate+Nitrite as N 300.0 07/03/2024:207418LDM Blank mg/L ND <0.4 <br /> LCS mg/L 20.00 105% 90-110 <br /> MS mg/L 40.00 98.5% 86-112 <br /> (VI 2445366-002) MSD mg/L 40.00 98.5% 86-112 <br /> MSRPD mg/L 0.0% :57 <br /> MS mg/L 40.00 90.4% 86-112 <br /> (VI 2445363-001) MSD mg/L 40.00 92.2% 86-112 <br /> MSRPD mg/L 1.0% :57 <br /> Nitrate Nitrogen 300.0 07/03/2024:207418LDM Blank mg/L ND <0.1 <br /> LCS mg/L 4.518 105% 90-110 <br /> MS mg/L 9.036 98.5% 86-112 <br /> (VI 2445366-002) MSD mg/L 9.036 98.5% 86-112 <br /> MSRPD mg/L 0.0% :57 <br /> MS mg/L 9.036 90.4% 86-112 <br /> (VI 2445363-001) MSD mg/L 9.036 92.1% 86-112 <br /> MSRPD mg/L 1.0% :57 <br /> Nitrite as Nitrogen 300.0 07/03/2024:207418LDM Blank mg/L ND <0.1 <br /> Page 7 of 8 Page 7 of 8 <br />