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3 <br /> c� F <br /> ENVIRONMENTAL , <br /> Analytical Chemists <br /> June 1,2020 Lab ID : STK2036844 <br /> Live Oak Geo Environmental Customer : 3-16608 <br /> Quality Control - Organic <br /> Constituent Method Date/ID I,Npe Units Conc. QC Data DQO Note <br /> Organic <br /> 1,2-Dibromoethane(EDB) S(W 05/21/20:205737MCA Blank ug/L ND <0.02 <br /> LCS ug/L 0.2376 125% 70-130 <br /> LCS ug/L 0.2344 147% 70-130 330 <br /> MS ug/L 0.2443 146% 70-130 435 <br /> (STK2036575-002) MSD ug/L 0.2409 -150% 70-130 435 <br /> MSRPD ug/L 0.5653 1.8% S30 <br /> MDL I u /L 0.01923 89.1 % 60-140 RERUN <br /> 1�3-Dibromopropane 504 05/21/20:205737MCA Blank ug/L 0.5629 134% 70-130 <br /> LCs ug/L 0.5576 135% 70-130 330 <br /> LCs ug/L 0.5500 144% 70-130 330 <br /> MS ug/L 0.5734 145% 70-130 435 <br /> (STK2036575-002) MSD ug/L 0.5653 154% 70-130 435 <br /> MSRPD ug/L 0.5653 4.2% <30 <br /> MDL I u /L 0.5682 132% 1 70-130 RERUN <br /> BCP 504 05/21/20:205737MCA Blank ug/L ND <0.01 <br /> LCS ug/L 0.2376 132% 70-130 330 <br /> LCS ug/L 0.2344 147% 70-130 330 <br /> MS ug/L 0.2443 153% 70-130 435 <br /> (STK2036575-002) MSD ug/L 0.2409 159% 70-130 435 <br /> MSRPD ug/L 0.5653 2.7% S30 <br /> MDL I u /L 0.01923 1 149% 60-140 RERUN <br /> 13DBP 504.1 05/22/20:20790 1 MCA CCV ug/L 9.975 111% 70-130 <br /> CCV uo/L 7.481 99.6% 70-130 <br /> BCP 504.1 05/22/20:207901MCA CCV ug/L 5.000 106% 70-130 <br /> CCV u /L 2.000 87.5% 70-130 <br /> EDB 504.1 05/22/20:20790 1 MCA CCV ug/L 5.000 113% 70-130 <br /> CCV u /L 2.000 82.0% 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 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.1663 CA ELAP Certification No.2670 CA ELAP Certification No.2775 CA ELAP Certification No.2810 <br />