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FGL ENVIr AGRICULTURAL Aticilyti(,il Chemists July 22, 2020 Lab ID : STK2039628 Don Chesney Customer : 3-14658 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,2-Dibromoethane(EDB) 504 07/15/20:208026MCA QMDL ug/L 0.01909 0.0% 60-140 RERUN Blank ug/L ND <0.02 LCS ug/L 0.2398 137% 70-130 330 LCS ug/L 0.2435 149% 70-130 330 MS ug/L 0.2431 157% 70-130 435 (STK2039691-001) MSD ug/L 0.2385 190% 70-130 435 MSRPD ug/L 0.2393 17.4% _<30 1,3-Dibromopropane 504 07/15/20:208026MCA QMDL ug/L 0.5644 142% 70-130 RERUN Blank ug/L 0.5711 139% 70-130 LCS ug/L 0.5628 146% 70-130 330 LCS ug/L 0.5715 164% 70-130 330 MS ug/L 0.5705 155% 70-130 435 (STK2039691-001) MSD ug/L 0.5598 199% 70-130 435 MSRPD ug/L 0.2393 22.7% <_30 DBCP 504 07/15/20:208026MCA QMDL ug/L 0.01909 108% 60-140 RERUN Blank ug/L ND <0.01 LCS ug/L 0.2398 158% 70-130 330 LCS ug/L 0.2435 191 % 70-130 330 MS ug/L 0.2431 200% 70-130 435 (STK2039691-001) MSD ug/L 0.2385 257% 70-130 435 MSRPD I ug/L 0.2393 1 20.2% <30 13DBP 504.1 07/16/20:211229MCA CCV ug/L 9.975 157% 70-130 362 CCV ug/L 9.975 138% 70-130 362 DBCP 504.1 07/16/20:211229MCA CCV ug/L 5.000 177% 70-130 360 CCV ug/L 5.000 149% 70-130 360 EDB 504.1 07/16/20:211229MCA CCV ug/L 5.000 144% 70-130 360 CCV ug/L 1 5.000 134% 1 70-130 1 360 Definition CCV :Continuing Calibration Verification-Analyzed to verify the instrument calibration is within criteria. Blank :Method Blank-Prepared to verify that the preparation process is not contributing contamination to the samples. LCS :Laboratory Control Standard/Sample-Prepared to verify that the preparation process is not affecting analyte recovery. MS Matrix Spikes-A random sample is spiked with a known amount of analyte.The recoveries are an indication of how that sample matrix affects analyte recovery. MSD :Matrix Spike Duplicate of MS/MSD pair-A random sample duplicate is spiked with a known amount of analyte.The recoveries are an indication of how that sample matrix affects analyte recovery. MSRPD :MS/MSD Relative Percent Difference(RPD)-The MS relative percent difference is an indication of precision for the preparation and analysis. ND :Non-detect-Result was below the DQO listed for the analyte. DQO :Data Quality Objective-This is the criteria against which the quality control data is com ared. Explanation 330 :The LCS was out of acceptance limits.Results may be biased high. 360 :CCV above Acceptance Range(AR).Samples which were non detect for this analyte were accepted. 362 Surrogates are qualified on Control Chart Limits,these are CCV limits.See individual sample reports. 435 Sample matrix may be affecting this analyte.Data was accepted based on the LCS or CCV recovery. Page 8 of 9 Corporate Offices&Laboratory Office&Laboratory Office&Laboratory Office&Laboratory Office&Laboratory 853 Corporation Street 2500 Stagecoach Road 563 E.Lindo Avenue 3442 Empresa Drive,Suite D 9415 W.Goshen Avenue Santa Paula,CA 93060 Stockton,CA 95215 Chico,CA 95926 San Luis Obispo,CA 93401 Visalia,CA 93291 TEL:(805)392-2000 TEL:(209)942-0182 TEL:(530)343-5818 TEL:(805)783-2940 TEL:(559)734-9473 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 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