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March 2, 2021 Lab ID : STK2131973 <br /> San Joaquin Co. Environmental Health Dep Customer : 3-17919 <br /> Quality Control - Inorganic <br /> Constituent Method Date/lD Type Units Cone. QC Data DQO Note <br /> Metals <br /> Sodium 200.7 02/11/21:202117AC CCB PPM 0.0005 1 <br /> Zinc 200.7 MS ug/L 800.0 98.0% 75-125 <br /> (STK2131973-001) MSD ug/L 800.0 99.3% 75-125 <br /> MSRPD u 4000 1.3% :520.0 <br /> 200.7 02/11/21:202117AC CCV ppm 1.000 94.9% 90-110 <br /> CCB ppm -0.00005 0.02 <br /> CCV ppm 1.000 97.1% 90-110 <br /> CCB PPM 0.00008 0.02 <br /> Wet Chem <br /> Alkalinity(as CaCO3) 2320B (VI 2140987-001) Dup mg/L 1.3% 10 <br /> 2320B 02/11/21:202087AMM CCV mg/L 235.8 93.7% 90-110 <br /> CCV m 235.8 94.0% 90-110 <br /> Bicarbonate 2320B (VI 2140987-001) Dup mg/L 5.7% 10 <br /> Carbonate 2320B VI 2140987-001 Dup m 3.6 10 <br /> Hydroxide 2320B (VI 2140987-001) Dup m 0.0 10 <br /> Conductivity 2510B 1 02/12/21:202121 STA ICB umhos/cm 0.12 1 <br /> CCV umhos/cm 999.0 97.7% 95-105 <br /> CCV umhos/cm 999.0 97.1% 95-105 <br /> E.C. 2510B 02/12/21:201562sta Blank umhos/cm ND <I <br /> (SP 2101924-001) Dup umhos/cm 0.5% 5 <br /> Total Dissolved Solids(TFR) 2540CE 02/11/21:201520CTL Blank mg/L 7.6 20 <br /> LCS mg/L 993.8 101% 90-110 <br /> (VI 2141208-001) Dup mg/L 1.5% 5 <br /> VI 2141208-001) Dup m 0.2% 5 <br /> Chloride 300.0 02/10/21:201466MCA Blank mg/L ND <1 <br /> LCS mg/L 25.00 104% 90-110 <br /> MS mg/L 50.00 95.3% 85-121 <br /> (STK2131853-001) MSD mg/L 50.00 95.6% 85-121 <br /> MSRPD mg/L 10.00 0.2% :519 <br /> MS tng/L 50.00 87.4% 85-121 <br /> (CH 2170594-001) MSD mg/L 50.00 88.9% 85-121 <br /> MSRPD m 10.00 0.8% _<19 <br /> 300.0 02/10/21:202114MCA CCB mg/L 0.1 1 <br /> CCV mg/L 25.00 103% 90-110 <br /> CCB mg/L 0.09 1 <br /> CCV m 25.00 102% 90-110 <br /> Fluoride 300.0 02/10/21:201466MCA Blank mg/L ND <0.1 <br /> LCS mg/L 2.500 104% 90-110 <br /> MS mg/L 5.000 101% 87-120 <br /> (STK2131853-001) MSD mg/L 5.000 101% 87-120 <br /> MSRPD mg/L 10.00 0.3% _<16 <br /> MS mg/L 5.000 100% 87-120 <br /> (CH 2170594-001) MSD mg/I.. 5.000 102% 87-120 <br /> MSRPD m 10.00 1.7% :516 <br /> 300.0 02/10/21:202114MCA CCB mg/L 0.000 0.1 <br /> CCV mg/L 2.500 102% 90-110 <br /> CCB mg/L 0.013 0.1 <br /> CCV m 2.500 102% 90-110 <br /> Nitrate 300.0 02/10/21:201466MCA Blank mg/L ND <0.4 <br /> LCS mg/L 20.00 104% 90-110 <br /> MS mg/L 40.00 102% 85-119 <br /> (STK2131853-001) MSD mg/L 40.00 102% 85-119 <br /> MSRPD mg/L 10.00 0.3% :519 <br /> MS I m 40.00 1 102% 1 85-119 <br /> Page 7 of 9 <br />