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. � AGRICULTURAL <br /> Analytical Chemists <br /> April 24,2020 Lab ID : STK2035035 <br /> Live Oak Geo Environmental Customer : 3-16608 <br /> Quality Control - Organic <br /> Constituent Method Date/ID Type Units Conc. QC Data DQO Note <br /> Organic <br /> 1,2-Dibromoethane(EDB) 504 04/20/20:204354MCA Blank ug/L ND <0.02 <br /> LCS ug/L 0.2400 102% 70-130 <br /> LCS ug/L 0.2436 121% 70-130 <br /> MS ug/L 0.2386 115% 70-130 <br /> (STK2034980-001) MSD ug/L 0.2427 124% 70-130 <br /> MSRPD ug/L 0.5697 8.8% <30 <br /> QMDL I u /L 0.01925 119% 60-140 <br /> 1,3-Dibromopropane 504 04/20/20:204354MCA Blank ug/L 0.5689 103% 70-130 <br /> LCS ug/L 0.5632 113% 70-130 <br /> LCS ug/L 0.5716 140% 70-130 330 <br /> MS ug/L 0.5599 133% 70-130 435 <br /> (STK2034980-001) MSD ug/L 0.5697 149% 70-130 435 <br /> MSRPD ug/L 0.5697 12.9% S30 <br /> QMDL I u /L 0.5689 121% 1 70-130 <br /> BCP 504 04/20/20:204354MCA Blank ug/L ND <0.01 <br /> LCS ug/L 0.2400 93.9% 70-130 <br /> LCs ug/L 0.2436 119% 70-130 <br /> MS ug/L 0.2386 106% 70-130 <br /> (STK2034980-001) MSD ug/L 0.2427 119% 70-130 <br /> MSRPD ug/L 0.5697 10.0% IMO <br /> QMDL I u /L 0.01925 119% 60-140 <br /> 13DBP 504.1 04/21/20:20622 1 MCA CCV ug/L 9.975 128% 70-130 <br /> CCV u /L 7.481 125% 70-130 <br /> BCP 504.1 04/21/20:206221MCA CCV ug/L 5.000 109% 70-130 <br /> CCV u /L 2.000 103% 70-130 <br /> DB 504.1 04/21/20:206221 MCA CCV ug/L 5.000 110% 70-130 <br /> CCV u /L 1 2.000 108% 1 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 /> 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 /> MSD :Matrix Spike Duplicate of MS/MSD pair-A random sample duplicate is spiked with a known amount of analyte.The recoveries <br /> are an indication of how that sample matrix affects analyte recovery. <br /> MSRPD :MS/MSD Relative Percent Difference(RPD)-The MS relative percent difference is an indication of precision for the preparation <br /> and analysis. <br /> ND :Non-detect-Result was below the DQO listed for the analyte. <br /> O :Data Quality Objective-This is the criteria against which the quality control data is compared. <br /> Explanation <br /> 330 :The LCS was out of acceptance limits.Results may be biased high. <br /> 435 :Sample matrix may be affecting this analyte.Data was accepted based on the LCS or CCV recovery. <br /> Page 6 of 7 <br /> Corporate Offices&Laboratory Office&Laboratory Office&Laboratory Office&Laboratory Office&Laboratory <br /> 853 Corporation Street 2500 Stagecoach Road 563 E.Lindo Avenue 3442 Empresa Drive,Suite D 9415 W.Goshen Avenue <br /> Santa Paula,CA 93060 Stockton,CA 95215 Chico,CA 95926 San Luis Obispo,CA 93401 Visalia,CA 93291 <br /> TEL:(805)392-2000 TEL:(209)942-0182 TEL:(530)343-5818 TEL:(805)783-2940 TEL:(559)734-9473 <br /> Env FAX:(805)525-4172/Ag FAX:(805)392-2063 FAX:(209)942-0423 FAX:(530)343-3807 FAX:(805)783-2912 FAX:(559)734-8435 <br /> CA ELAP Certification No.1573 CA ELAP Certification No.1563 CA ELAP Certification No.2670 CA ELAP Certification No.2775 CA ELAP Certification No.2810 <br />