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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 Service WorkOrder: 2409559 <br /> Date Prepared: 09/11/2024 BatchID: 301631 <br /> Date Analyzed: 09/11/2024-09/12/2024 Extraction Method: SW5030B <br /> Instrument: GC38,GC49 Analytical Method: SW8260D <br /> Matrix: Soil Unit: mg/kg <br /> Project: 5113;MARATHON STOCKTON-OILY DEBRIS Sample ID: MB/LCS/LCSD-301631 <br /> QC Summary Report for SW8260D <br /> Analyte MB MDL RL SPK MB SS MB SS <br /> Result Val %REC Limits <br /> Surrogate Recovery <br /> Dibromofluoromethane 0.092 0.125 74 70-140 <br /> Toluene-d8 0.13 0.125 105 70-140 <br /> 4-13FB 0.013 0.0125 103 70-140 <br /> Benzene-M 0.090 0.1 90 70-140 <br /> Ethyl benzene-d10 0.13 0.1 127 70-140 <br /> 1,2-DCB-d4 0.085 0.1 85 70-140 <br /> (Cont.) <br /> CA ELAP 1644•NELAP 4033ORELAP <br /> Page 19 of 38 <br />