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AGRICULTURAL ENVIRONMENTAL <br />September 13, 2017 <br />Kimberly Martin <br />Lab ID <br />Customer <br />Quality Control - Organic <br />: STK1750879 <br />: 3-18039 <br />Office & Laboratory <br />2500 Stagecoach Road <br />Stockton, CA 95215 <br />TEL: (209)942-0182 TEL: (530)343-5818 <br />FAX: (209)942-0423 FAX: (530)343-3807 <br />CA ELAP Certification No. 1563 CA ELAP Certification No. 2670 <br />Analytical Chemists <br />Constituent Method Date/ID 1 pc l nits ( 'o ne. QC Data DQO \ ot c <br />Organic <br />1,2-Dichlorobenzene-d4 524.2 09/06/17:210827VRG Blank ug/L 10.00 87.5% 70-130 <br />MS ug/L 10.00 101 % 70-130 <br />(SP 1710704-001) MSD ug/L 10.00 103% 70-130 <br />MSRPD ug/L 10.00 1.5% <20 <br />524 2 09/06/17:213549VRG CCV ug/L 10.00 103 % 70-130 <br />I .2-Dichloropropane 524 2 09/06/17:210827VRG Blank ug/L ND <0.5 <br />MS ug/L 10.00 58.4% 10-163 <br />(SP 1710704-001) MSD ug/L 10.00 67.0% 10-163 <br />MSRPD ug/L 10.00 13.7% <34 <br />524.2 09/06/17:213549VRG CCV ug/L 10.00 104% 70-130 <br />4-Bromofluorobenzene 524.2 09/06/17:210827VRG Blank ug/L 10.00 87.8% 70-130 <br />MS ug/L 10.00 104% 70-130 <br />(SP 1710704-001) MSD ug/L 10.00 107% 70-130 <br />MSRPD ug/I. 10.00 2.9% <30 <br />4-Bromofluorobenzene (BFB) 524.2 09/06/17:213549VRG CCV ug L 10.00 108% 70-130 <br />1,2,3-Trichloropropane 524MTCP 09/05/17:213297VRG CCV ng/L 20.00 93.8 % 80-120 <br />CCV ng/L 20.00 81.6% 80-120 <br />524M-TC P 09/01/17:210624VRG Blank ng/L ND <5 <br />LCS ng/L 20.00 94.1 % 80-120 <br />MS ng/L 20.00 102% 80-120 <br />(SP 1710485-001) MSD ng/L 20.00 110% 80-120 <br />MSRP D ng/L 20.00 1.7 <5 <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 <br /> <br /> Matrix Spike Duplicate of MS/MSD pair - A random sample duplicate is spiked with a known amount of analyted. The recoveries <br />are an indication of how that sample matrix affects analyte recovery. <br />: MSRPD <br /> <br /> 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 7 of 8 <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: (805)392-2063 <br />CA ELAP Certification No. 1573 <br />TEL: (805)783-2940 <br />FAX: (805)783-2912 <br />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 <br />Office & Laboratory Office & Laboratory <br />563 E. Undo Avenue 3442 Empresa Drive, Suite D <br />Chico, CA 95926 San Luis Obispo, CA 93401