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ENVIRONMENTALTEMPAGRICULTURAL <br /> Analytical Chemists <br /> July 26, 2018 Lab ID : STK1839399 <br /> David Duke Customer A-17313 <br /> Quality Control - Inorganic <br /> Constituent Method Date/ID Type units Conc. QC Data DQO Note <br /> Wet Chem <br /> Nitrite as Nitrogen 450ONO2F MS mg/L 1.218 90.4% 50-150 <br /> (SP 1808788-001) MSD mg/L 1.218 98.0% 50-150 <br /> MSRPD mg/L 1.218 8.1% 530 <br /> Nitrate+Nitrite as N 450ONO3F MS mg/L 28.17 35.8% 5-285 <br /> (SP 1808788-001) MSD mg/L 28.17 38.3% 5-285 <br /> MSRPD mg/L 28.17 6.8% 1530.4 <br /> 450ONO3F 07/06/18:209707JDD ICB mg/L 0.127 0.2 <br /> ICV mg/L 11.27 97.9% 90-110 <br /> CCB mg/L 0.123 0.2 <br /> CCV I mo 11.27 99.1 % 1 90-110 <br /> Nitrite as Nitrogen 450ONO3F 07/06118:209700JDD ICB mg/L 0.00300 0.012 <br /> ICV mg/L 1.218 101% 90-110 <br /> CCB mg/L 0.00200 0.012 <br /> CCV mg/L 1.218 101% 90-110 <br /> Definition <br /> ICV :Initial Calibration Verification-Analyzed to verify the instrument calibration is within criteria. <br /> ICB :Initial Calibration Blank-Analyzed to verify the instrument baseline is within criteria. <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 /> 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 analyted.The recoveries <br /> are 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 /> D O :Data Quality Objective-This is the criteria against which the quality control data is compared. <br /> Page 5 of 5 <br /> Corporate Offices&Laboratory Office&Laboratory Office&Laboratory Office&Laboratory Office&Laboratory <br /> 853 Corporation Street 2500 Stagecoach Road 563 E.Undo 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:(805)392-2000 TEL:(209)942-0182 TEL:(530)343-5818 TEL:(805)783-2940 TEL:(559)734-9473 <br /> Env FAX:(805)525-4172/Ag FAX:(805)392-2063 FAX:(209)942-0423 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 Certification No.2670 CA FLAP Certification No.2775 CA ELAP Certification No.281 <br />