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Note Units DQO Conc. Type QC Data Constituent Method Date/ID <br />mg/L <br />mg/L <br />mg/L <br />mg/L <br />mg/L <br />ND <br />101% <br />98.9% <br />98.2% <br />0.6% <br /><0.4 <br />80-120 <br />66-125 <br />66-125 <br />11.22 <br />5.609 <br />5.609 <br />4500NO3F <br />Wet Chem <br />Nitrate Nitrogen 06/28/2024:207198LDM Blank <br />LCS <br />MS <br />(VI 2445174-001) MSD <br />MSRPD <br />Section: Quality Control Page 4 of 4 Page 4 of 4 <br />Quality Control - Wet Chem <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. Lindo Avenue <br />Chico, CA 95926 <br />TEL: (530)343-5818 <br />FAX: (530)343-3807 <br />CA ELAP Certification No. 2670 <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 />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 />July 2, 2024 <br />Patrick Sunbury <br />Method Blank - Prepared to verify that the preparation process is not contributing contamination to the samples. <br />Data Quality Objective - This is the criteria against which the quality control data is compared. <br />Laboratory Control Standard/Sample - Prepared to verify that the preparation process is not affecting analyte recove <br />Matrix Spikes - A random sample is spiked with a known amount of analyte. The recoveries are an indication of how t <br />affects analyte recovery. <br />Matrix Spike Duplicate of MS/MSD pair - A random sample duplicate is spiked with a known amount of analyted. The <br />indication of how that sample matrix affects analyte recovery. <br />MS/MSD Relative Percent Difference (RPD) - The MS relative percent difference is an indication of precision for the <br />analysis. <br />Non-detect - Result was below the DQO listed for the analyte. <br />Definition <br />Blank : <br />DQO : <br />LCS : <br />MS <br />MSD : <br />MSRPD : <br />ND <br />ry. <br />hat sample matrix <br />recoveries are an <br />preparation and <br />E NVI RON M ENTAL AGRICULTURAL <br />Analytical Chemists <br />Lab No. : STK2439407 <br />Customer No. : 3018387