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June 9, 2021 Lab ID : STK2136694 <br /> San Joaquin Co. Environmental Health Dep Customer : 3-17919 <br /> Quality Control- Inorganic <br /> Constituent Method Date/ID Type Units Cone. QC Data DQO Note <br /> Vet Chem <br /> Nitrite 300.0 (STK2136696-001) MSD mg/L 40.00 99.1% 85-119 <br /> MSRPD m 10.00 0.8% :519 <br /> 300.0 05/13/21:207101MCA ICB mg/L 0.000 0.5 <br /> ICV mg/L 20.00 102% 90-110 <br /> CCB mg/L 0.083 0.5 <br /> CCV m 20.00 103% 90-110 <br /> Nitrate+Nitrite as N 300.0 05/13/21:205293MCA Blank m ND <0.I <br /> Nitrate Nitrogen 300.0 05/13/21:205293MCA Blank m ND <0.1 <br /> itrite 300.0 05/13/21:205293MCA Blank mg/L ND <0.5 <br /> LCS mg/L 15.00 101% 90-110 <br /> Ms mg/L 30.00 102% 74-126 <br /> (STK2136694-001) MSD mg/L 30.00 102% 74-126 <br /> MSRPD mg/L 10.00 0.04% 520 <br /> MS mg/L 30.00 101% 74-126 <br /> (STK2136696-001) MSD mg/L 30.00 102% 74-126 <br /> MSRPD I m 10.00 1 1.3% 520 <br /> 300.0 05/13/21:207101MCA ICB mg/L 0.000 0.5 <br /> ICV mg/L 15.00 102% 90-110 <br /> CCB mg/L 0.000 0.5 <br /> CCV mg/L. 15.00 102% 90-110 <br /> Nitrite Nitrogen 300.0 05/13/21:205293MCA Blank m ND <0.2 <br /> Sulfate 300.0 05/13/21:205293MCA Blank mg/L ND <0.5 <br /> LCS mg/L 50.00 102% 90-110 <br /> MS mg/L 100.0 101% 82-124 <br /> (STK2136694-001) MSD mg/L 100.0 101% 82-124 <br /> MSRPD mg/L 10.00 0.2% :523 <br /> MS mg/L 100.0 101% 82-124 <br /> (STK2136696-001) MSD mg/L 100.0 102% 82-124 <br /> MSRPD mg/L 10.00 1.3% <23 <br /> 300.0 05/13/21:207101MCA ICB mg/L 0.000 0.5 <br /> ICV mg/L 50.00 102% 90-110 <br /> CCB mg/L 0.178 0.5 <br /> CCV m 50.00 103% 90-110 <br /> 111 4500-H B STK2136696-001 Dup units 0.1% 4.80 <br /> 4500HB 05/14/21:207136JBA CCV units 8.000 IOI% 95-105 <br /> CCV units 8.000 101% 95-105 <br /> NIHAS 5540C 05/13/21:207229JBA CCB mg/L -0.0393 0.25 <br /> CCV mg/L 1.000 101% 90-110 <br /> CCB mg/L -0.0268 0.25 <br /> CCV m 1.000 100% 90-110 <br /> BAS Extraction 5540C 05/13/21:205389JBA Blank mg/L ND <0.1 <br /> LCS mg/L 0.5000 101% 86-114 <br /> BS mg/L 0.5000 90.9% 86-114 <br /> BSD mg/L 0.5000 91.3% 86-114 <br /> BSRPD m 0.5000 0.0021 50.1 <br /> Definition <br /> ICV :Initial Calibration Verification-Analyzed to verify the instrument calibration is within criteria. <br /> ICB :Initial Calibration Blank-Analyzed to verify the instrument baseline is within criteria. <br /> CCV :Continuing Calibration Verification-Analyzed to verify the instrument calibration is within criteria. <br /> CCB :Continuing Calibration Blank-Analyzed to verify the instrument baseline is within criteria. <br /> Blank :Method Blank-Prepared to verify that the preparation process is not contributing contamination to the samples. <br /> LCS :Laboratory Control Standard/Sample-Prepared to verify that the preparation process is not affecting analyte recovery. <br /> MS Matrix Spikes-A random sample is spiked with a known amount of analyte.The recoveries are an indication of how that sample <br /> matrix affects analyte recovery. <br /> Page 8 of 9 <br />