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1534 Willow Pass Road,Pittsburg,CA 94565-1701 <br /> _ M c C a m p b e I I Analytical, Inc. Toll Free Telephone:(877)252-9262/Fax:(925)252-9269 <br /> I "When Quality Counts" http://www.mccampbell.com/E-mail:main@mccampbell.com <br /> Quality Control Report <br /> Client: Patriot Environmental Services,Inc. WorkOrder: 2411396 <br /> Date Prepared: 11/07/2024 BatchID: 305511 <br /> Date Analyzed: 11/11/2024 Extraction Method: SW5030B <br /> Instrument: GC49 Analytical Method: SW8260D <br /> Matrix: Soil Unit: mg/kg <br /> Project: 6515;Marathon Stockton Bin Sample ID: MB/LCS/LCSD-305511 <br /> QC Summary Report for SW8260D <br /> Analyte MB MDL RL SPK MB IS/SS MB IS/SS <br /> Result Val %REC Limits <br /> Surrogate Recovery <br /> Dibromofluoromethane 0.11 0.125 89 70-140 <br /> Toluene-d8 0.14 0.125 109 70-140 <br /> 4-131`13 0.011 0.0125 92 70-140 <br /> Benzene-d6 0.088 0.1 88 70-140 <br /> Ethylbenzene-d10 0.093 0.1 93 70-140 <br /> 1,2-DCB-d4 0.063 0.1 63,1`3 70-140 <br /> (Cont.) <br /> CA ELAP 1644•NELAP 4033ORELAP <br /> Page 14 of 27 <br />