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May 31, 2024 <br /> Lab No. : STK2436559 <br /> San Joaquin County EHD <br /> Customer No. : 3017919 <br /> Quality Control -Wet Chem <br /> Wet Chem <br /> Alkalinity(as CaCO3) 2320B (STK2436614-001) Dup mg/L 0.6% 10 <br /> Bicarbonate 2320B (STK2436614-001) Dup mg/L 0.5% 10 <br /> Carbonate 2320B (STK2436614-001) Dup mg/L 0% 10 <br /> E.C. 2320B (STK2436614-001) Dup umhos/cm 0.3% 5 <br /> Hydroxide 2320B (STK2436614-001) Dup mg/L 0% 10 <br /> Solids,Total Dissolved 2540CE 05/10/2024:205234CTL Blank mg/L ND <20 <br /> LCS mg/L 992.0 97.7% 90-110 <br /> (VI 2443693-003) Dup mg/L 1.51% 5 <br /> (VI 2443693-003) Dup mg/L 3.37% 5 <br /> Chloride 300.0 05/09/2024:205244LDM Blank mg/L ND <1 <br /> LCS mg/L 25.00 101% 90-110 <br /> MS mg/L 50.00 101% 67-117 <br /> (STK2436558-001) MSD mg/L 50.00 102% 67-117 <br /> MSRPD mg/L 0.1% :57 <br /> MS mg/L 50.00 104% 67-117 <br /> (STK2436559-001) MSD mg/L 50.00 104% 67-117 <br /> MSRPD mg/L 0.3% :57 <br /> Fluoride 300.0 05/09/2024:205244LDM Blank mg/L ND <0.1 <br /> LCS mg/L 2.500 102% 90-110 <br /> MS mg/L 5.000 106% 89-111 <br /> (STK2436558-001) MSD mg/L 5.000 104% 89-111 <br /> MSRPD mg/L 2.2% :59 <br /> MS mg/L 5.000 106% 89-111 <br /> (STK2436559-001) MSD mg/L 5.000 104% 89-111 <br /> MSRPD mg/L 1.8% :59 <br /> Nitrate 300.0 05/09/2024:205244LDM Blank mg/L ND <0.4 <br /> LCS mg/L 20.00 102% 90-110 <br /> MS mg/L 40.00 101% 86-112 <br /> (STK2436558-001) MSD mg/L 40.00 100% 86-112 <br /> MSRPD mg/L 0.1% :57 <br /> MS mg/L 40.00 79.7% 86-112 435 <br /> (STK2436559-001) MSD mg/L 40.00 83.7% 86-112 435 <br /> MSRPD mg/L 2.0% :57 <br /> Nitrate+Nitrite as N 300.0 05/09/2024:205244LDM Blank mg/L ND <0.4 <br /> LCS mg/L 20.00 102% 90-110 <br /> MS mg/L 40.00 101% 86-112 <br /> (STK2436558-001) MSD mg/L 40.00 100% 86-112 <br /> MSRPD mg/L 0.1% <_7 <br /> MS mg/L 40.00 79.7% 86-112 435 <br /> (STK2436559-001) MSD mg/L 40.00 83.7% 86-112 435 <br /> MSRPD mg/L 2.0% :57 <br /> Nitrate Nitrogen 300.0 05/09/2024:205244LDM Blank mg/L ND <0.1 <br /> LCS mg/L 4.518 102% 90-110 <br /> MS mg/L 9.036 101% 86-112 <br /> (STK2436558-001) MSD mg/L 9.036 100% 86-112 <br /> MSRPD mg/L 0.1% :57 <br /> MS mg/L 9.036 79.6% 86-112 435 <br /> (STK2436559-001) MSD mg/L 9.036 83.7% 86-112 435 <br /> MSRPD mg/L 2.0% :57 <br /> Nitrite as Nitrogen 300.0 05/09/2024:205244LDM Blank mg/L ND <0.1 <br /> Page 7 of 8 Page 7 of 8 <br />