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ENVIRONMENTAL' AGRICULTURAL <br /> Analytical Clhcmi�ts <br /> May 5, 2021 Lab ID : STK2135311 <br /> Aero Pure Water Customer : 3-17843 <br /> Quality Control-Inorganic <br /> Constituent Method Date/ID Type Units Cone. QC Data DQO Note <br /> Wet Chem <br /> Nitrate+Nitrite as 4500NO3F 04121/21:204321VVH Blank mg/L ND <0.2 <br /> LCS mg(L 11.22 101% 80-120 <br /> MS mg(L 5.609 97.1% 5-285 <br /> (STK2135311-001) MSD mg/L 5.609 98.9% 5-285 <br /> MSRPD mgfL 5.609 0.8% S30.4 <br /> 450ONO3F 04121/21:205851VVH CCB mg/L 0.080 0.2 <br /> CCV mg/L 11.22 98.4% 90-110 <br /> CCB rl 0.10 0.2 <br /> BCCV L 11.22 9N1D90-1.210 <br /> nk 0itrate Nitrogen 450ONO3F 04121/21:204321VVH <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 the 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 ofhow 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 /> we 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 ofprecision for the preparation <br /> and analysis. <br /> ND :Nan-detect-Result was below the DQO fisted for the analyte. <br /> 1DQ0 :Data Quality Objective-This is the criteria against which the quality control data is compared. <br /> Page 3 of 3 <br /> Corporate Offices S Laboratory Office i Laboratory Office d Laboratory OMlea&Laboratory ORlas 6 Laboratory <br /> 853 Corporation Street 2500 Stagecoach Road 563 E.Linen 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 SM01 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)5264172/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 Certlficetlon No.2670 CA ELAP Certification No.2775 CA ELAP Certification No.2810 <br />