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ENVIRONMENTAL . , <br /> Analytical Chemists <br /> October 19,2020 Lab ID : STK2054461 <br /> Live Oak Geo Environmental Customer : 3-16608 <br /> Quality Control - Organic <br /> Constituent Method Date/11) fNPC Univ Cone. QC Data UU QNote <br /> Organic <br /> 1,2-Dibromoethane(EDB) 504 10/10/20:210897MCA Blank ug/L ND <0.02 <br /> LES ug/L 0.2412 104% 70-130 <br /> LCs ug/L 0.2376 103% 70-130 <br /> MS ug/L 0.2386 95.6% 70-130 <br /> (STK2054118-001) MSD ug/L 0.2386 88.9% 70-130 <br /> MSRPD u /L 0.5599 73% G30 <br /> 1�3-Dibromopropane 504 10/10/20:210897MCA Blank ug/L 0.5653 116% 70-130 <br /> LCS ug/L 0.5661 124% 70-130 <br /> LES ug/L 0.5576 125% 70-130 <br /> MS ug/L 0.5599 128% 70-130 <br /> (STK2054118-001) MSD ug/L 0.5599 126% 70-130 <br /> MSRPD u /L 0.5599 1.8% 1 G30 <br /> BCP 504 10/10/20:210897MCA Blank ug/L ND <0.01 <br /> LCS ug/L 0.2412 106% 70-130 <br /> LCS ug/L 0.2376 108% 70-130 <br /> MS ug/L 0.2386 110% 70-130 <br /> (STK2054118-001) MSD ug/L 0.2386 102% 70-130 <br /> MSRPD u /L 0.5599 8.1% G30 <br /> 13DBP 504.1 10/11/20:216680MCA CCV ug/L 7.481 121% 70-130 <br /> CCV u /L 9.975 124% 70-130 <br /> BCP 504.1 10/11/20:216680MCA CCV ug/L 2.000 108% 70-130 <br /> CCV u /L 5.000 108% 70-130 <br /> EDB 504.1 10/11/20:216680MCA CCV ug/L 2.000 96.5% 70-130 <br /> CCV u /L 1 5.000 1 100% 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 /> Page 6 of 7 <br /> Corporate Offices&Laboratory Office&Laboratory ONice&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 />