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January 7, 2020 Lab ID : STK1958479 <br />Ahmed Hussein Customer : 3-18429 <br />Quality Control - Inorganic <br />Constituent <br />Office & Laboratory <br />Method <br />Date/1D <br />Type <br />Units <br />Colic. <br />t)(' Data <br />1)Q0 <br />Note <br />Wet Chem <br />Nitrate + Nitrite as N <br />450ONO3F <br />MS <br />mg/L <br />28.04 <br />36.8% <br />5-285 <br />(VI 1947841-001) <br />MSD <br />mg/L <br />28.04 <br />37.0% <br />5-285 <br />MSRPD <br />m <br />28.04 <br />0.6% <br />530.4 <br />4500NO3F <br />12/20/19:219720IDD <br />CCB <br />mg/L <br />0.169 <br />0.2 <br />CCV <br />mg/L <br />11.2-1 <br />94.2% <br />90-110 <br />CCB <br />mg/L <br />0.174 <br />0.2 <br />CCV <br />m <br />11.22 <br />95.3% <br />90-110 <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 />: 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 />D O <br />: Data Quality Objective - This is the criteria against which the quality control data is compared. <br />Corporate Offices & Laboratory Office & Laboratory Office & Laboratory <br />563 E. Lindo Avenue 3442 Empresa Drive, Suite D <br />Chico, CA 95926 San Luis Obispo, CA 93401 <br />TEL: (530)343-5818 TEL: (805)783-2940 <br />FAX: (530)343-3807 FAX: (805)783-2912 <br />CA ELAP Certification No. 2670 CA ELAP Certification No. 2775 <br />Office & Laboratory <br />853 Corporation Street <br />2500 Stagecoach Road <br />Santa Paula, CA 93060 <br />Stockton, CA 95215 <br />TEL: (805)392-2000 <br />TEL: (209)942-0182 <br />Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 FAX: (209)942-0423 <br />CA ELAP Certification No. 1573 <br />CA ELAP Certification No. 1563 <br />Page 6 of 7 <br />Office & Laboratory <br />9415 W. Goshen Avenue <br />Visalia, CA 93291 <br />TEL: (559)734-9473 <br />FAX: (559)734-8435 <br />CA ELAP Certification No. 2810 <br />