Laserfiche WebLink
February 2, 2022 Lab ID : STK2230658 <br />San Joaquin Co. Environmental Health Dep Customer :3-17919 <br />Quality Control - Inorganic <br />Constituent <br />Method <br />Date/ID <br />Type <br />Units <br />Conc. <br />QC Data <br />DQO <br />Note <br />Wet Chem <br />Nitrite <br />300.0 <br />01/13/22:20046INJB <br />LCS <br />mg/L <br />15.00 <br />101% <br />90-110 <br />MS <br />mg/L <br />30.00 <br />97.1 % <br />74-126 <br />(CC 2280175-004) <br />MSD <br />mg/L <br />30.00 <br />107% <br />74-126 <br />MSRPD <br />m <br />10.00 <br />9.5% <br /><20 <br />300.0 <br />01/13/22:200772njb <br />CCB <br />mg/I <br />0.0530 <br />0.5 <br />CCV <br />mg/I <br />15.00 <br />101% <br />90-110 <br />CCB <br />mg/I <br />0.0520 <br />0.5 <br />CCV <br />I mg/I <br />15.00 <br />100% <br />1 90-110 <br />Nitrite Nitrogen <br />300.0 <br />01/13/22:20046INJB <br />Blank <br />mg/L <br />ND <br /><0.2 <br />Sulfate <br />300.0 <br />01/13/22:20046INJB <br />Blank <br />mg/L <br />ND <br /><0.5 <br />LCS <br />mg/L <br />50.00 <br />109% <br />90-110 <br />MS <br />mg/L <br />100.0 <br />100% <br />82-124 <br />(CC 2280175-004) <br />MSD <br />mg/L <br />100.0 <br />110% <br />82-124 <br />MSRPD <br />mg/L <br />10.00 <br />7.3% <br /><23 <br />300.0 <br />01/13/22:200772njb <br />CCB <br />mg/l <br />0.142 <br />0.5 <br />CCV <br />mg/l <br />50.00 <br />108% <br />90-110 <br />CCB <br />mg/l <br />0.155 <br />0.5 <br />CCV <br />mg/I <br />50.00 <br />108% <br />90-110 <br />MBAs <br />5540C <br />01/13/22:200921jba <br />CCB <br />mg/I <br />-0.0568 <br />0.25 <br />CCV <br />mg/I <br />1.000 <br />104% <br />90-110 <br />CCB <br />mg/I <br />-0.0524 <br />0.25 <br />CCV <br />mg/I <br />1.000 <br />103% <br />90-110 <br />MBAs Extraction <br />5540C <br />0 1 / I 3/22:200706amm <br />Blank <br />mg/L <br />ND <br /><0.1 <br />LCS <br />mg/L <br />0.5000 <br />101% <br />86-114 <br />BS <br />mg/L <br />0.5000 <br />89.7% <br />86-114 <br />BSD <br />mg/L <br />0.5000 <br />109% <br />86-114 <br />BSRPD <br />TVL <br />0.5000 <br />18.8% <br /><5 <br />410 <br />Definition <br />ICB <br />: Initial Calibration Blank - Analyzed to verify the instrument baseline is within criteria. <br />CCV <br />: Continuing Calibration Verification - Analyzed to verify the instrument calibration is within criteria. <br />CCB <br />: Continuing Calibration Blank - Analyzed to verify the instrument baseline is within criteria. <br />Blank <br />: Method Blank - Prepared to verify that the preparation process is not contributing contamination to the samples. <br />LCS <br />: Laboratory Control Standard/Sample - Prepared to verify that the preparation process is not affecting analyte recovery. <br />Matrix Spikes - A random sample is spiked with a known amount of analyte. The recoveries are an indication of how that sample <br />MS <br />matrix affects analyte recovery. <br />: Matrix Spike Duplicate of MS/MSD pair - A random sample duplicate is spiked with a known amount of analyte. The recoveries <br />MSD <br />are an indication of how that sample matrix affects analyte recovery. <br />BS <br />: Blank Spikes - A blank is spiked with a known amount of analyte. It is prepared to verify that the preparation process is not <br />affecting analyte recovery. <br />BSD <br />: Blank Spike Duplicate of BS/BSD pair - A blank duplicate is spiked with a known amount of analyte. It is prepared to verify that <br />the preparation process is not affecting analyte recovery. <br />: Duplicate Sample - A random sample with each batch is prepared and analyzed in duplicate. The relative percent difference is an <br />Dup <br />indication of precision for the preparation and analysis. <br />: MS/MSD Relative Percent Difference (RPD) - The MS relative percent difference is an indication of precision for the preparation <br />MSRPD <br />and analysis. <br />BSRPD <br />; BS/BSD Relative Percent Difference (RPD) - The BS relative percent difference is an indication of precision for the preparation <br />and analysis. <br />ND <br />: Non -detect - Result was below the DQO listed for the analyte. <br />DQO <br />: Data Quality Objective - This is the criteria against which the quality control data is compared. <br />Explanation <br />410 <br />: Relative Percent Difference (RPD) not within Maximum Allowable Value (MAV). Data was accepted based on the LCS or CCV <br />recovery. <br />435 <br />: Sample matrix may be affecting this analyte. Data was accepted based on the LCS or CCV recovery. <br />Page 8 of 8 <br />