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ENVIRONMENTAL AGRICULTURAL <br /> Analytical Chemists <br /> December 19,2018 Lab ID : STK 1857589 <br /> Live Oak Geo Environmental Customer : 3-16608 <br /> Quality Control - Organic <br /> Constituent Method Date/ID Type Units Cone. QC Data DQO Note <br /> Organic <br /> 1,2-Dibromoethane(EDB) 504 12/12/18:214622BJW Blank u /L ND <0.02 <br /> 13-Dibromopropane 504 12/12/18:214622BJW QMDL ug/L 0.5799 87.4% 70-130 <br /> Blank ug/L 0.5783 90.6% 70-130 <br /> LCS ug/L 0.5811 86.8% 70-130 <br /> LCS ug/L 0.5776 87.6% 70-130 <br /> MS ug/L 0.5868 95.4% 70-130 <br /> (STK1857346-001) MSD ug/L 0.5761 83.6% 70-130 <br /> MSRPD I u L 1 0.5761 1 15.0% 1 — <br /> BCP 504 12/12/18:214622BJW I Blank u /L I I ND <0.01 <br /> 13DBP 504.1 12/13/18:218158BJW CCV ug/L 9.975 1 71.1% 70-130 <br /> CCV u /L 1 7.481 83.4% 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 analyted.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 /> DQO Data Quality Objective-This is the criteria against which the quality control data is compared. <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.Undo 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 />