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ENVIRONMENTA 'AGRICULTURAL <br /> Analytical Chemists <br /> November 3,2020 Lab ID : STK2054855 <br /> Kris Nies Customer : 3-18581 <br /> Quality Control- Inorganic <br /> Constituent Method Date/ID Type Units Cause. QC Data DQO Note <br /> Wet Chem <br /> Nitrite as Nitrogen 450ONO2B MS mg/L 0.2284 88.6% 1-173 <br /> (STK2054820-001) MSD mg/L 0.2284 90.5% 1-173 <br /> MSRPD mg/L 0.2284 0.0043 50.1 <br /> 450ONO2B 10/17/20:216717AMM CCV mg/L 0.1522 101% 90-110 <br /> CCB mg/L -0.0005 0.1 <br /> CCV mg/L 0.1522 103% 90-110 <br /> CCB m -0.002 0.1 <br /> Nitrate+Nitrite as 450ONO3F 10/20/20:212346VVH Blank mg/L ND <0.2 <br /> LCS mg/L 11.22 101% 80-120 <br /> MS mg/L 5.609 95.0% 5-285 <br /> (V12048083-001) MSD mg/L 5.609 96,1% 5-285 <br /> MSRPD mg/L 5.609 0.496 510.4 <br /> 450ONO3F 10/20/20:216876VVH CCB mg/L 0.045 0.2 _ <br /> CCV mg/L 11.22 100% 90-110 <br /> CCB mg/L 0.067 0.2 <br /> CCVm /L 11.22 101% 90-110 <br /> Nitrate Nitrogen 45ODN03F 10/20/20:212346VVH Blank rog/L ND <0.2 <br /> Definition <br /> CCV :Continuing Calibration Verification-Analyzed to verify the instrument calibration is within criteria. <br /> CCB :Continuing Calibration Blank-Analyzed to verify the instrument baseline is within criteria. <br /> Blank :Method Blank-Prepared to verify that die preparation process is not contributing contamination to the samples. <br /> LCs :laboratory Control Standard/Sample-Prepared to verify that the preparation process is not affecting analyte recovery. - <br /> Ms :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 /> MSD :Matrix Spike Duplicate of MS/MSD pair-A random sample duplicate is spiked with a known amount of analyte.The recoveries <br /> arc an indication of how that sample matrix affects analyte recovery. <br /> MSRPD :MS/MSD Relative Percent Difference(RPD)-The MS relative percent difference is an indication of precision for the preparation <br /> and analysis. <br /> PID :Non-detect-Result was below the DQO listed for the analyte. <br /> 1DQ0 :Data Quality Objective-This is the criteria against which the quality control data is compared. <br /> Page 5 of 5 <br /> Corporate Officee&Laboratory Office&Laboratory Office&Laboratory Office&Laboratory Office&Laboratory <br /> 853 Corporation Street 2500 Stagecoach Road 563 E.Linda Avenue 3442 Empresa Drive,Suite D 9415 W Goshen Avenue <br /> Santa Paula,CA 93060 Stockton,CA 95215 Chico,CA 95926 San Luis Obispo,CA 93401 Visalia,CA 93291 <br /> TEL:(BO6)392-2000 TEL:(209)942-0182 TEL:(530)343-5818 TEL:(BOS)783-2940 TEL:(559)734-9473 <br /> Env FAX:(805)525-0172/All FAX:(805)392-2063 FAX:(209)9424423 FAX:(530)343-3807 FAX:(805)783-2912 FAX(559)734-8435 <br /> CA ELAP Certification No.1573 CA ELAP Certification No.1563 CA ELAP Cenifieatlon No.2670 CA ELAP Certification No.2775 CA ELAP Certificetlon No.2810 <br />