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December 29, 2021 Lab ID : STK2157956 <br />Carol Franzia Customer :3-18570 <br />Quality Control - Inorganic <br />Constituent <br />Office & Laboratory <br />Method <br />Date/ID <br />Type <br />Units <br />Cone. <br />QC Data <br />DQO <br />Note <br />Wet Chem <br />Stockton, CA 95215 <br />Chico, CA 95926 <br />San Luis Obispo, CA 93401 <br />Vlsalla, CA 93291 <br />TEL: (805)392-2000 <br />TEL; (209)942-0182 <br />TEL: (530)343-5818 <br />TEL: (805)783-2940 <br />TEL: (559)734-9473 <br />Nitrate +Nitrite as <br />450ONO3F <br />12/17/21:214568wh <br />Blank <br />mgt <br />CA ELAP Certification No. 1563 <br />ND <br /><0.2 <br />CA ELAP Cert1fiw9on No. 2810 <br />LCS <br />mg(L <br />11.22 <br />101% <br />80-120 <br />MS <br />ni <br />5.609 <br />99.5% <br />5-285 <br />(V12149737-001) <br />MSD <br />mg/L <br />5.609 <br />102% <br />5-285 <br />MSRPD <br />ni <br />5.609 <br />2.1% <br />530A <br />450ONO3F <br />12/17/21:219594wh <br />CCB <br />mg4 <br />0.0560 <br />0.2 <br />CCV <br />mg(l <br />11.22 <br />99.1% <br />90-110 <br />CCB <br />mg/l <br />0.0200 <br />0.2 <br />CCV <br />m <br />11.22 <br />98.6% <br />90-110 <br />Nitrate Nitrogen <br />450ONO3F <br />12/17/21:214568wh <br />Blank <br />m /L <br />ND <br />50.2 <br />Definition <br />CCV <br />: Continuing Calibration Verification - Analyzed to verify the instrument calibration is within criteria. <br />CCB <br />: Continuing Calibration Blank - Analyzed to verify the instrument baseline is within criteria. <br />Blank <br />: Method Blank - Prepared to verify that the preparation process is not contributing contamination to the samples. <br />LCS <br />Laboratory Control Standard/Sample - Prepared to verify that the preparation process is not affecting analyte recovery. <br />MS <br />: 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 />: Matrix Spike Duplicate of MS/MSD pair - A random sample duplicate is spiked with a known amount of analyte. The recoveries <br />MSD <br />are an indication of how that sample matrix affects analyte recovery. <br />MSRPD <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 <br />: Non -detect - Result was below the DQO listed for the analyte. <br />DQO <br />: Data Quality Objective -This is the criteria against which the quality control data is compared. <br />Page 5 of 5 <br />Corporate Offices & Laboratory <br />Office & Laboratory <br />Office & laboratory <br />Office & Laboratory <br />Office & Laboratory <br />853 Corporation Street <br />2500 Stagecoach Road <br />563 E. Undo Avenue <br />3442 Empresa Drive, Suite D <br />9415 W, Goshen Avenue <br />Santa Paula, CA 93060 <br />Stockton, CA 95215 <br />Chico, CA 95926 <br />San Luis Obispo, CA 93401 <br />Vlsalla, CA 93291 <br />TEL: (805)392-2000 <br />TEL; (209)942-0182 <br />TEL: (530)343-5818 <br />TEL: (805)783-2940 <br />TEL: (559)734-9473 <br />Env FAX: (805)525-4172/Ag FAX: (805)392-2063 FAX: (209)942-0423 <br />FAX: (530)343-3807 <br />FAX: (806)783-2912 <br />FAX: (559)734-8435 <br />CA ELAP Cerdlication No. 1573 <br />CA ELAP Certification No. 1563 <br />CA ELAP Controllan No. 2670 <br />CA ELAP Certificaton No. 2775 <br />CA ELAP Cert1fiw9on No. 2810 <br />