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FGL <br /> ENVIRONMENTAL • , <br /> Analytical Clieniists <br /> February 18,2021 Lab ID : STK2132178 <br /> Live Oak Geo Environmental Customer : 3-16608 <br /> Quality Control - Inorganic <br /> Constituent 'Method Date/ID Type Units Conc. QC Data DQO Note <br /> Wet Chem <br /> Nitrate 300.0 02/13/21:201610MCA Blank mg/L ND <0.4 <br /> LCS mg/L 20.00 104% 90-110 <br /> MS mg/L 40.00 78.2% 85-119 435 <br /> (VI 2141114-001) MSD mg/L 40.00 79.2% 85-119 435 <br /> MSRPD mg/L 10.00 0.5% 519 <br /> MS mg/L 40.00 38.4% 85-119 435 <br /> (V12141113-001) MSD mg/L 40.00 44.7% 85-119 435 <br /> MSRPD m /L 10.00 1.5% :519 <br /> 300.0 02/13/21:202250MCA CCB mg/L 0.000 0.5 <br /> CCV mg/L 20.00 103% 90-110 <br /> CCB mg/L 0.000 0.5 <br /> CCV m /L 20.00 103% 90-110 <br /> Nitrate Nitrogen 300.0 02/13/21:201610MCA Blank m /L ND <0.1 <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 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 /> 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 /> ND :Non-detect-Result was below the DQO listed for the analyte. <br /> DQO :Data Quality Objective-This is the criteria against which the quality control data is compared. <br /> Explanation <br /> 435 :Sample matrix may be affecting this anal te.Data was accepted based on the LCS or CCV recovery. <br /> Page 4 of 4 <br /> Corporate Offices&Laboratory Office&Laboratory Office&Laboratory Office&Laboratory Office&Laboratory <br /> 853 Corporation Street 2500 Stagecoach Road 563 E.Lando 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 ELAP Certification No.2775 CA ELAP Certification No.2810 <br />