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June 24, 2021 <br />Lab ID <br />San Joaquin Co. Environmental Health Dep Customer <br />Quality Control - Organic <br />: STK2138245 <br />:3-17919 <br />Constituent <br />Method <br />Date/ID <br />Type <br />Units <br />Conc. <br />Q(' Data <br />I)Q0 <br />lute <br />Organic <br />1,3-Dibromopropane <br />>nl <br />06/14/21:206634JMR <br />Blank <br />ug/L <br />0.5864 <br />97.3% <br />70-130 <br />LCS <br />ug/L <br />0.5781 <br />96.1% <br />70-130 <br />LCS <br />ug/L <br />0.5703 <br />89.2% <br />70-130 <br />MS <br />ug/L <br />0.5596 <br />92.2% <br />70-130 <br />(STK2138153-001) <br />MSD <br />ug/L <br />0.5690 <br />83.3% <br />70-130 <br />MSRPD <br />ug/L <br />0.2433 <br />8.5% <br /><_30 <br />MDL <br />ugIL <br />0.5620 <br />85.6% <br />70-130 <br />DBCP <br />504 <br />06/14/21:206634JMR <br />Blank <br />ug/L <br />ND <br /><0.01 <br />LCS <br />ug/L <br />0.2463 <br />96.2% <br />70-130 <br />LCS <br />ug/L <br />0.2430 <br />92.5% <br />70-130 <br />MS <br />ug/L <br />0.2384 <br />97.7% <br />70-130 <br />(STK2138153-001) <br />MSD <br />ug/L <br />0.2425 <br />86.1% <br />70-130 <br />MSRPD <br />ug/L <br />0.2433 <br />10.7% <br />:530 <br />QMDL <br />I ug/L <br />0.01901 <br />113% <br />1 60-140 <br />13DBP <br />504.1 <br />06/15/21:209048JMR <br />CCV <br />ug/L <br />7.481 <br />90.8% <br />70-130 <br />CCV <br />ug/L <br />9.975 <br />87.4% <br />70-130 <br />BCP <br />504.1 <br />06/15/21:209048JMR <br />CCV <br />ug/L <br />2.000 <br />93.0% <br />70-130 <br />CCV <br />u L <br />5.000 <br />89.2% <br />70-130 <br />Definition <br />CCV : Continuing Calibration Verification - Analyzed to verify the instrument calibration 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 />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 />: 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 />ND : Non -detect - Result was below the DQO listed for the analyte. <br />DQO : Data Quality Objective - This is the criteria against which the quality control data is compared. <br />Corporate Offices & Laboratory Office & Laboratory Office & Laboratory <br />853 Corporation Street 2500 Stagecoach Road 563 E. Lindo Avenue <br />Santa Paula, CA 93060 Stockton, CA 95215 Chico, CA 95926 <br />TEL: (805)392-2000 TEL: (209)942-0182 TEL: (530)343-5818 <br />Env FAX: (805)525-4172 /Ag FAX: (805)392-2063 FAX: (209)942-0423 FAX: (530)343-3807 <br />CA ELAP Certification No. 1573 CA ELAP Certification No. 1563 CA ELAP Certification No. 2670 <br />Office & Laboratory <br />3442 Empresa Drive, Suite D <br />San Luis Obispo, CA 93401 <br />TEL: (805)783-2940 <br />FAX: (805)783-2912 <br />CA ELAP Certification No. 2775 <br />Page 4 of 4 <br />Office & Laboratory <br />9415 W. Goshen Avenue <br />Visalia, CA 93291 <br />TEL: (559)734-9473 <br />FAX: (559)734-8435 <br />CA ELAP Certification No. 2810 <br />