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July 22, 2020 Lab ID : STK2039628 <br />Don Chesney Customer :3-14658 <br />Quality Control - Organic <br />Constituent <br />Method <br />Date/ID <br />Type <br />Units <br />Conc. <br />QC Data <br />DQO <br />Note <br />Organic <br />Santa Paula, CA 93060 <br />Stockton, CA 95215 <br />Chico, CA 95926 <br />San Luis Obispo, CA 93401 <br />Visalia, CA 93291 <br />TEL: (805)392-2000 <br />TEL: (209)942-0182 <br />TEL: (530)343-5818 <br />1,2-Dibromoethane(EDB) <br />504 <br />07/15/20:208026MCA <br />QMDL <br />ug/L <br />0.01909 <br />0.0% <br />60-140 <br />RERUN <br />CA ELAP Certification No. 2775 <br />CA ELAP Certification No. 2810 <br />Blank <br />ug/L <br />ND <br /><0.02 <br />LCS <br />ug/L <br />0.2398 <br />137% <br />70-130 <br />330 <br />LCS <br />ug/L <br />0.2435 <br />149% <br />70-130 <br />330 <br />MS <br />ug/L <br />0.2431 <br />157% <br />70-130 <br />435 <br />(STK2039691-001) <br />MSD <br />ug/L <br />0.2385 <br />190% <br />70-130 <br />435 <br />MSRPD <br />ug/L <br />0.2393 <br />17.4% <br />_<30 <br />1,3-Dibromopropane <br />504 <br />07/15/20:208026MCA <br />QMDL <br />ug/L <br />0.5644 <br />142% <br />70-130 <br />RERUN <br />Blank <br />ug/L <br />0.5711 <br />139% <br />70-130 <br />LCS <br />ug/L <br />0.5628 <br />146% <br />70-130 <br />330 <br />LCS <br />ug/L <br />0.5715 <br />164% <br />70-130 <br />330 <br />MS <br />ug/L <br />0.5705 <br />155 % <br />70-130 <br />435 <br />(STK2039691-001) <br />MSD <br />ug/L <br />0.5598 <br />199% <br />70-130 <br />435 <br />MSRPD <br />ug/L <br />0.2393 <br />22.7% <br /><_30 <br />DBCP <br />504 <br />07/15/20:208026MCA <br />QMDL <br />ug/L <br />0.01909 <br />108% <br />60-140 <br />RERUN <br />Blank <br />ug/L <br />ND <br /><0.01 <br />LCS <br />ug/L <br />0.2398 <br />158 % <br />70-130 <br />330 <br />LCS <br />ug/L <br />0.2435 <br />191 % <br />70-130 <br />330 <br />MS <br />ug/L <br />0.2431 <br />200% <br />70-130 <br />435 <br />(STK2039691-001) <br />MSD <br />ug/L <br />0.2385 <br />257% <br />70-130 <br />435 <br />MSRPD <br />I ug/L <br />0.2393 1 <br />20.2% <br /><30 <br />13DBP <br />504.1 <br />07/16/20:211229MCA <br />CCV <br />ug/L <br />9.975 <br />157% <br />70-130 <br />362 <br />CCV <br />ug/L <br />9.975 <br />138 % <br />70-130 <br />362 <br />DBCP <br />504.1 <br />07/16/20:211229MCA <br />CCV <br />ug/L <br />5.000 <br />177% <br />70-130 <br />360 <br />CCV <br />ug/L <br />5.000 <br />149% <br />70-130 <br />360 <br />EDB <br />504.1 <br />07/16/20:211229MCA <br />CCV <br />ug/L <br />5.000 <br />144% <br />70-130 <br />360 <br />CCV <br />ug/L 1 <br />5.000 <br />134% <br />1 70-130 1 <br />360 <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 com ared. <br />Explanation <br />330 : The LCS was out of acceptance limits. Results may be biased high. <br />360 : CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. <br />362 Surrogates are qualified on Control Chart Limits, these are CCV limits. See individual sample reports. <br />435 Sample matrix may be affecting this analyte. Data was accepted based on the LCS or CCV recovery. <br />Page 8 of 9 <br />Corporate Offices & Laboratory <br />Office & Laboratory <br />Office & Laboratory <br />Office & Laboratory <br />Office & Laboratory <br />853 Corporation Street <br />2500 Stagecoach Road <br />563 E. Lindo Avenue <br />3442 Empresa Drive, Suite D <br />9415 W. Goshen Avenue <br />Santa Paula, CA 93060 <br />Stockton, CA 95215 <br />Chico, CA 95926 <br />San Luis Obispo, CA 93401 <br />Visalia, CA 93291 <br />TEL: (805)392-2000 <br />TEL: (209)942-0182 <br />TEL: (530)343-5818 <br />TEL: (805)783-2940 <br />TEL: (559)734-9473 <br />Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 FAX: (209)942-0423 <br />FAX: (530)343-3807 <br />FAX: (805)783-2912 <br />FAX: (559)734-8435 <br />CA ELAP Certification No. 1573 <br />CA ELAP Certification No. 1563 <br />CA ELAP Certification No. 2670 <br />CA ELAP Certification No. 2775 <br />CA ELAP Certification No. 2810 <br />