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ENVIRONMENTAL <br /> Atialytical Chemists <br /> April 7, 2026 <br /> Live Oak Geo Environmental Lab No. : STK2634169 <br /> Customer No. : 3016608 <br /> Quality Control - Organic <br /> Organic <br /> 1,3 Dibromopropane 504 04/02/2026:203530MNM Blank ug/L 0.5041 93.6% 70.130 <br /> LCS ug/L 0.4986 126% 70-130 <br /> LCS ug/L 0.5136 99.4% 70-130 <br /> MS ug/L 0.4977 97.7% 70-130 <br /> (SP 2600033-052) MSD ug/L 0.5071 99.8% 70-130 <br /> MSRPD ug/L 3.9% 530 <br /> - <br /> _. __._.._-......__... <br /> DBCP 504 04/02/2026:20353OMNM Blank ug/L ND <0.00985 <br /> LCS ug/L 0.2367 ! 127% 70-130 <br /> LCS ug/L 0.2438 103% 70-130 <br /> MS ug/L 0.2363 101% 70-130 <br /> (SP 2600033 052) MSD ug/L 0.2407 104% 70-130 <br /> MSRPD ug/L 5.3% 1 :00 <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 analyte. <br /> section:Quality Control Page 5 of 6 Page 5 of 6 <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 9411 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 /> 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 />