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1534 Willow Pass Road,Pittsburg,CA 94565-1701 <br /> _ M c C a m p b e I l Analytical, Inc. Toll Free Telephone:(877)252-9262/Fax:(925)252-9269 <br /> "When Quality Counts" http://www.mccampbeR.com/E-mail:main@mccampbell.com <br /> Quality Control Report <br /> Client: AdvancedGeo,Inc. WorkOrder: 2309886 <br /> Date Prepared: 09/14/2023 BatchID: 278038 <br /> Date Analyzed: 09/22/2023 -09/23/2023 Extraction Method: SW5030B <br /> Instrument: GC16,GC49 Analytical Method: SW8260B <br /> Matrix: Soil Unit: mg/kg <br /> Project: San Joaquin County Corp Yard Sample ID: MB/LCS/LCSD-278038 <br /> QC Summary Report for SW8260B <br /> Analyte MB MDL RL SPK MB SS MB SS <br /> Result Val %REC Limits <br /> Surrogate Recovery <br /> Dibromofluoromethane 0.13 0.125 108 70-140 <br /> Toluene-d8 0.15 0.125 118 70-140 <br /> 4-BFB 0.014 0.0125 110 70-140 <br /> Benzene-d6 0.10 0.1 103 70-140 <br /> Ethyl benzene-d10 0.12 0.1 117 70-140 <br /> 1,2-DCB-d4 0.081 0.1 81 70-140 <br /> (Cont.) <br /> CA ELAP 1644•NELAP 4033ORELAP <br /> Page 18 of 28 <br />