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ENVIRONMENTA AGRICULTURAL <br /> Analytical Chemists <br /> March 16, 2017 Lab ID : STK1732481 <br /> Cyndi Katzakian Customer : 3-17377 <br /> Quality Control - Inorganic <br /> Constituent Method Date/ID TypeUnits Cmc. QC Data DQO Note <br /> Wet Chem <br /> Nitrite as Nitrogen 450ONO2F MS mg/L1.218 96.1% 50-150 <br /> (STK1732481-001) MSD mg/L 1.218 94.8% 50-150 <br /> MSRPD m 1.218 1.3% <_30 <br /> Nitrate+Nitrite as 450ONO3F MS mg/L 11.22 94.9% 5-285 <br /> (STK1732481-001) MSD mg/L 11.22 91.3% 5-285 <br /> MSRPD mg/L 11.22 3.3% <30.4 <br /> 450ONO3F 03/03/17:203273JDD CCB mg/L 0.094 0.1 <br /> CCV mg/L 11.22 94.3% 90-110 <br /> CCS mg/L 0.069 0.1 <br /> CCV m 11.22 90.9% 90-110 <br /> Nitrite as Nitrogen 410ONO3F �03/11/17:203271JDTCB mg/L 0.00700 0.012 <br /> CVmg/L 1.218 95.7% 90-110 <br /> CB mg/L 0.00600 0.012 <br /> CCV m 1.218 96.0% 90-110 <br /> [DO <br /> ition <br /> :Continuing Calibration Verification-Analyzed to verify the instrument calibration is within criteria. <br /> :Continuing Calibration Blank-Analyzed to verify the instrument baseline is within criteria. <br /> :Matrix Spikes-A random sample is spiked with a known amoont of analyte.The recoveries are an indication of how that sample <br /> matrix affects analyte recovery. <br /> :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 /> PD :MS/MSD Relative Percent Difference(RPD)-The MS relative percent difference is an indication of precision for the preparation <br /> and analysis. <br /> :Data Quality Objective-This is the criteria against which the oath control data is computed. <br /> Page 5 of 5 <br /> Corporate ORleas&Laboratory Otflea&Laboratory Offlae&Laboratory Office&Laboratory Office&Laboratory <br /> 863 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)34M818 TEL:(805)783-2940 TEL:(559)734-9473 <br /> Env FAX:(805)5254172/Ag FAX:(805)392-2063 FAX:(209)942-0423 FAX:(530)3433807 FAX:(805)783-2912 FAX:(559)734-8435 <br /> CA ELAP Cer8fica8on No.1573 CA SLAP Certification No.1563 CA ELAP Certification No.2670 CA ELAP Cenlficetion No.2775 CA ELAP Certificafion No.2810 <br />