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r <br /> ENVIRONMENTAL <br /> Analytical Chemists <br /> July 12,2019 Lab ID : STK1939671 <br /> Live Oak Geo Environmental Customer : 3-16608 <br /> Quality Control - Organic <br /> Constituent Method Date/ID Type Units Cone. QC Data DQO :Vote <br /> Organic <br /> 1,2-Dibromoethane(EDB) 504 07/10/19:207671SBL Blank ug/L ND <0.02 <br /> LCS ug/L 0.2471 71.7% 70-130 <br /> LCS ug/L 0.2432 71.8% 70-130 <br /> MS ug/L 0.2496 313% 70-130 435 <br /> (STK1939812-001) MSD ug/L 0.2471 45.7% 70-130 435 <br /> MSRPD ug/L 0.5799 0.035 50.02 435 <br /> MDL I a /L 0.01970 125% 60-140 <br /> 1,3-Dibromopropane 504 07/10/19:207671SBL Blank ug/L 0.5862 86.0% 70-130 <br /> LCS ug/L 0.5799 83.1% 70-130 <br /> LCS ug/L 0.5708 69.9% 70-130 <br /> MS ug/L 0.5857 703% 70-130 <br /> (STK1939812-001) MSD ug/L 0.5799 694% 70-130 435 <br /> MSRPD ug/L 0.5799 23% <30 <br /> MDL I u /L 1.165 73.9% 1 70-130 <br /> BCP 504 07/10/19:207671SBL Blank ug/L ND <0.01 <br /> LCS ug/L 0.2471 70.0% 70-130 <br /> LCS ug/L 0.2432 723% 70-130 <br /> MS ug/L 0.2496 66.2% 70-130 435 <br /> (STK1939812-001) MSD ug/L 0.2471 84.7% 70-130 <br /> MSRPD ug/L 0.5799 23.5% 530 <br /> MDL I u /L 0.01970 1 134% 60-140 <br /> 13DBP 504.1 07/11/19:210305SBL CCV ug/L 7.481 82.2% 70-130 <br /> CCV ug/L 9.975 85.5% 70-130 <br /> CCV u /L 7.481 85.1% 70-130 <br /> DBCP 504.1 07/11/19:210305SBL CCV ug/L 2.007 75.2% 70-130 <br /> CCV ug/L 5.018 76.9% 70-130 <br /> CCV u /L 2.007 73.2% 70-130 <br /> B 504.1 07/11/19:210305SBL CCV ug/L 2.008 70.2% 70-130 <br /> CCV ug/L 5.020 75.1% 70-130 <br /> CCV I u /L 1 2.008 1 71.7% 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 /> D O :Data Quality Objective-This is the criteria against which the quality control data is compared. <br /> Explanation <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 />