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FGL <br /> ENVIRONMENTAL <br /> Analytical Chemists <br /> October 5, 2022 <br /> Live Oak Geo Environmental Lab No. : STK2253884 <br /> Customer No. : 3016608 <br /> Quality Control-Wet Chem <br /> Wet Chem <br /> Nitrate Nitrogen 450ONO3F 09/28/2022:211073LFS Blank mg/L ND <0.2 <br /> LCS mg/L 11.22 95.8% 80-120 <br /> MS mg/L 5.609 94.4% 66-125 <br /> (CC 2283607-001) MSD mg/L 5.609 97.4% 66-125 <br /> MSRPD mg/L 5.609 1.5% 530.4 <br /> Definition <br /> Blank : Method Blank-Prepared to verify that the preparation process is not contributing contamination to the samples. <br /> DQO : Data Quality Objective-This is the criteria against which the quality control data is compared. <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 matrix <br /> 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 are an <br /> 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 and <br /> analysis. <br /> ND : Non-detect-Result was below the DQO listed for the analyt� i �� ` <br /> Section:Quality Control Page 3 of 3 Page 3 of 3 <br /> Corporate Offices&Laboratory Office&Laboratory Office&Laboratory Office&Laboratory Office&Laboratory <br /> 853 Corporation Street 2500 Stagecoach Road 563 E.Lindo 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)5254172/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.28110 <br />