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December 28, 2021 Lab ID : STK2157902 <br />Live Oak Geo Environmental Customer :3-16608 <br />Quality Control - Inorganic <br />Constituent <br />Method <br />Date/1D <br />Type <br />Units <br />Cone. <br />QC Data <br />DQo <br />Note <br />Wet Chem <br />Nitrate + Nitrite as N <br />450ONO3F <br />12/15/21:214478vvh <br />Blank <br />mg/L <br />ND <br /><0.2 <br />LCS <br />mg/L <br />11.22 <br />101% <br />80-120 <br />MS <br />mg/L <br />5.609 <br />66.6% <br />5-285 <br />(V12149811 -00 1) <br />MSD <br />mg/L <br />5.609 <br />75.2% <br />5-285 <br />MSRPD <br />m /L <br />5.609 <br />1.4% <br />510.4 <br />450ONO3F <br />12/ 15/21:219420vvh <br />CCB <br />mg/I <br />0.0630 <br />0.2 <br />CCV <br />mg/I <br />11.22 <br />101% <br />90-110 <br />CCB <br />mg/I <br />0.0510 <br />0.2 <br />CCV <br />m /l <br />11.22 <br />99.9% <br />90-110 <br />urate Nitrogen <br />450ONO3F <br />12/15/21:214478vvh <br />Blank <br />ml /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 -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 />Corporate Offices & Laboratory Office & Laboratory Office & Laboratory <br />853 Corporation Street 2500 Stagecoach Road 563 E. Undo Avenue <br />Santa Paula, CA 93060 Stockton, CA 95215 Chico, CA 95926 <br />TEL: (805)392-2000 TEL: (209)942-0182 TEL: (530)343-5818 <br />Env FAX: (805)525-4172 /Ag FAX: (805)392-2063 FAX: (209)942-0423 FAX: (530)343-3807 <br />CA ELAP Certification No. 1573 CA ELAP Certification No. 1563 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 />Page 3 of 3 <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 />