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'AGRICULTURALENVIRONMENTAL <br /> Analytical Chemists <br /> November 24, 2020 Lab ID : STK2055606 <br /> San Joaquin Co. Environmental Health Dep Customer : 3-17919 <br /> Quality Control- Organic <br /> Constituent 'Method Date/ID 'Type Units Conc. QC Data DQO Note <br /> organic <br /> 1,3-Dibromopropane 504 11/16/20:213571MCA Blank ug/L 0.5601 133% 70-130 <br /> LCs ug/L 0.5726 157% 70-130 330 <br /> LCS ug/L 0.5580 134% 70-130 330 <br /> MS ug/L 0.5606 148% 70-130 435 <br /> (S"1-K2055604-001) MSD uglL 0.5656 153% 70-130 435 <br /> MSRPD ug/L 0.2419 4.8% _<30 <br /> QM:DL I ug/L 0.5656 143% 1 70-130 RERUN <br /> BCP 504 1 1/16/20:21357[MCA Blank ugLL ND <0.01 <br /> LCS ug/L 0.2440 142% 70-130 330 <br /> LCS ug/L 0.2375 116% 70-130 <br /> MS ug/L 0.2388 135% 70-130 435 <br /> (ST`K2055604-001) NISD ug/L 0.2410 138% 70-130 435 <br /> MSRPD ug/L 0.2419 2.6% 5530 <br /> QMDL I ug/L 0.01914 146% 1 60-140 RERUN <br /> 13DBY 504.1 11/18120:21828[MCA CCV ug/L 7.481 119% 70-130 <br /> CCV ug/L 9.975 121% 70-130 <br /> BCP 504.1 11/18/20:218281MCA CCV ugfL 2.000 102% 70-130 <br /> CCV ug/L 5.000 112% 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 Trow 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 /> DQO :Data Quality Objective-TT1is 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 dais analyte.Data was accepted based on the LCS or CCV recovery. <br /> Page 6 of 6 <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 Msalia,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 f Ag FAX:(805)392-2063 FAX:(209)942-0423 FAX:(530)343-3807 FAX:(805)783-2912 FAX:(559)734-8435 <br /> r,A FI AP r`.Artlnration Nn.1573 CA ELAP Certification No.1563 CA ELAP Certification No.2670 CA ELAP Certification No.2775 CA ELAP Certification No.281( <br />