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ENVIRONMENTAL <br /> Anal�,tical Chemists <br /> June 26, 2018 Lab ID : STK1838366 <br /> Aleck Dambacher Customer : 3-15291 <br /> Quality Control - Organic <br /> Constituent Method Date/ID Tope Units Colic. QC Data DQO Note <br /> Organic <br /> 2-Dibromoethane(EDB) 504 06/19/18:207088BJW Blank ug/L ND <0.02 <br /> LCS ug/L 0.2500 112% 70-130 <br /> LCS ug/L 0.2500 102% 70-130 <br /> MS ug/L 0.2941 109% 70-130 <br /> (STK1838126-001) MSD ug/L 0.2941 111 % 70-130 <br /> MSRPD ug/L 0.5868 1.5% <_30 <br /> QMDL I u 0.01985 80.0% 0-300 <br /> 1,3-Dibromopropane 504 06/19/18:207088BJW Blank ug/L 0.5868 101 % 70-130 <br /> LCS ug/L 0.5868 101 % 70-130 <br /> LCS ug/L 0.5868 99.9% 70-130 <br /> MS ug/L 0.5868 102% 70-130 <br /> (STK1838126-001) MSD ug/L 0.5868 93.6% 70-130 <br /> MSRPD ug/L 0.5868 8.2% 530 <br /> QMDL I u 0.5868 97.8% 70-130 <br /> DBCP ;W 06/19/18:207088BJW Blank ug/L ND <0.01 <br /> LCS ug/L 0.2500 115% 70-130 <br /> LCS ug/L 0.2500 110% 70-130 <br /> MS ug/L 0.2941 115% 70-130 <br /> (STK1838126-001) MSD ug/L 0.2941 115% 70-130 <br /> MSRPD ug/L 0.5868 0.0% <30 <br /> QMDL u 0.01985 91.9% 0-300 <br /> 13DBP 504.1 06/20/18:208710BJW CCV ug/L 9.975 102% 70-130 <br /> CCV ug/L 7.481 95.0% 70-130 <br /> DBCP 504.1 06/20/18:20871OBJW CCV ug/L 5.000 121 % 70-130 <br /> CCV ug/L 2.000 105% 70-130 <br /> EDB 504.1 06/20/18:20871OBJW CCV ug/L 5.000 119% 70-130 <br /> CCV ug/L 2.000 1 88.0% 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 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 13 of 14 <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 />