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March 28, 2022 Lab 1D : STK2233500 <br />Julie Edsell Customer 3-18723 <br />Quality Control - Inorganic <br />Constituent <br />Office & Laboratory <br />Method <br />Date/m <br />Office is Laboratory <br />Units <br />Conc. <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 />Visalia, 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 />urate+Nitrite as <br />450ONO3F <br />03/16/22:202936whmg/L <br />FAX: (559)734-8435 <br />CA ELAP Certification No. 1573 <br />CA ELAP Certification No. 1563 <br />ND <br /><0.2 <br />CA ELAP Certification No. 2810 <br />[Blank <br />mg/L <br />11.22 <br />99.8% <br />80-120 <br />mg/L <br />5.609 <br />95.7% <br />5-285 <br />(CH 2271739-001) <br />mg/L <br />5.609 <br />98.7%, <br />5-285 <br />m L <br />5.609 <br />3.1% <br /><30.4 <br />450ONO3F <br />03/16/22:203854vvhmg/l <br />0.0670 <br />0.2 <br />CCV <br />mg/1 <br />11.22 <br />97.8% <br />90-110 <br />CCB <br />m9/1 <br />.0:0800 <br />-•- 0.2 <br />CCV <br />nl <br />1 11.22 <br />1- 98.3% <br />90-110 <br />Nitrate Nitrogen <br />450ONO3F <br />03/16/22:202936evh <br />Blank <br />mg/L <br />ND <br /><0.2 <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 />: Matrix Spikes - A random sample is spiked with a known amount of analyte. The recoveries are an indication of how that sample <br />MS <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 />: MS/MSD Relative Percent Difference (RPD) - The MS relative percent difference is an indication of precision for the preparation <br />MSRPD <br />and analysis. <br />ND <br />: Non-delcvt - 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 8 Laboratory <br />Office & Laboratory <br />Office B. Laboratory <br />Office 8 Laboratory <br />Office is Laboratory <br />853 Corporation Street <br />2500 Stagecoach Road <br />563 E. Linda 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 />Visalia, 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)525-0172 l Ag FAX: (805)392-2063 FAX: (209)942-0423 <br />FAX: (530)343-3807 <br />FAX (805)783-2912 <br />FAX: (559)734-8435 <br />CA ELAP Certification No. 1573 <br />CA ELAP Certification No. 1563 <br />CA ELAP Certification No. 2670 <br />CA ELAP Certification No. 2775 <br />CA ELAP Certification No. 2810 <br />