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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.mccampbell.com/E-mail:main@mccampbell.com <br /> Quality Control Report <br /> Client: AdvancedGeo,Inc. WorkOrder: 2503L69 <br /> Date Prepared: 03/31/2025 BatchID: 314331 <br /> Date Analyzed: 04/01/2025 Extraction Method: SW5030B <br /> Instrument: GC49 Analytical Method: SW8260D <br /> Matrix: Soil Unit: mg/kg <br /> Project: SUSD-Weber Institute Sample ID: MB/LCS/LCSD-314331 <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 0.12 0.125 93 70-140 <br /> Toluene-d8 0.14 0.125 115 70-140 <br /> 4-BFB 0.012 0.0125 96 70-140 <br /> Benzene-d6 0.11 0.1 106 70-140 <br /> Ethyl benzene-d10 0.13 0.1 130 70-140 <br /> 1,2-DCB-d4 0.077 0.1 77 70-140 <br /> (Cont.) <br /> CA ELAP 1644•NELAP 4033ORELAP <br />