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ENVIRONMENTAL - <br /> <br />AGRICULTURAL <br />Analytical Chemists <br />April 15,2021 Lab ID : STK2134388 <br />Live Oak Geo Environmental Customer : 3-16608 <br />Quality Control - Organic <br />Constituent Method Date/ID Type Units Cone. QC Data DQO Note <br />Organic <br />1 ,2-Dibromoethane(EDB ) 504 04/07/21:203713JMR Blank ug/L ND <0.02 <br />LCS ug/L 0.2420 111% 70-130 <br />LCS ug/L 0.2399 91.0% 70-130 <br />MS ug/L 0.2435 114% 70-130 <br />(STK2134240-001) MSD ug/L 0.2394 106% 70-130 <br />MSRPD ug/L 0.5618 9.1% <30 <br />QMDL ug/L 0.01929 94.8% 60-140 <br />1,3-Dibromopropane 504 04/07/21:203713JMR Blank ug/L 0.5677 98.0% 70-130 <br />LCS ug/L 0.5679 100 % 70-130 <br />LCS ug/L 0.5629 96.0 % 70-130 <br />MS ug/L 0.5715 99.9 % 70-130 <br />(STK2134240 -001) MSD ug/L 0.5618 95.2 % 70-130 <br />MSRPD ug/L 0.5618 6.5% <30 <br />QMDL ug/L 0.5702 98.7 % 70-130 <br />DBCP 504 04/07/21:203713JMR Blank ug/L ND <0.01 <br />LCS ug/L 0.2420 99.9% 70-130 <br />LCS ug/L 0.2399 86.0% 70-130 <br />MS ug/L 0.2435 101 % 70-130 <br />(STK2134240-001) MSD ug/L 0.2394 94.0% 70-130 <br />MSRPD ug/L 0.5618 8.7% <30 <br />QMDL ug/L 0.01929 118% 60-140 <br />13DBP 504.1 04/08/21:205046JMR CCV ug/L 9.975 110% 70-130 <br />CCV ug/L 7.481 100% 70-130 <br />DBCP 504.1 04/08/21:205046JMR CCV ug/L 5.000 91.6% 70-130 <br />CCV ug/L 2.000 84.5 % 70-130 <br />EDB 504.1 04/08/21:205046JMR CCV ug/L 5.000 93.6% 70-130 <br />CCV ug/L 2.000 87.5 % 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 />DQO : Data Quality Objective - This is the criteria against which the quality control data is compared. <br />Page 5 of 6 <br />Corporate Offices & Laboratory <br />853 Corporation Street <br />Santa Paula, CA 93060 <br />TEL: (805)392-2000 <br />Env FAX: (805)525-4172 / Ag FAX: <br />CA ELAP Certification No. 1573 <br />Office & Laboratory <br />2500 Stagecoach Road <br />Stockton, CA 95215 <br />TEL: (209)942-0182 <br />(805)392-2063 FAX: (209)942-0423 <br />CA ELAP Certification No. 1563 <br />Office & Laboratory <br />563 E. Undo Avenue <br />Chico, CA 95926 <br />TEL: (530)343-5818 <br />FAX: (530)343-3807 <br />CA ELAP Certification <br />Office & Laboratory <br />3442 Empresa Drive, Suite D <br />San Luis Obispo, CA 93401 <br />TEL: (805)783-2940 <br />FAX: (805)783-2912 <br />No. 2670 CA ELAP Certification No. 2775 <br />Office & Laboratory <br />9415W. Goshen Avenue <br />Visalia, CA 93291 <br />TEL: (559)734-9473 <br />FAX: (559)734-8435 <br />CA ELAP Certification No. 2810