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M1534 Willow Pass Road,Pittsburg,CA 94565-1701 <br /> c C a m p b e I l Analytical, Inc. Toll Free Telephone:(877)252-9262/Fax:(925)252-9269 <br /> t '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: 314350 <br /> Date Analyzed: 04/01/2025 Extraction Method: SW5030B <br /> Instrument: GC19 Analytical Method: SW8015B <br /> Matrix: Soil Unit: mg/Kg <br /> Project: SUSD-Weber Institute Sample ID: MB/LCS/LCSD-314350 <br /> QC Summary Report for 8015B <br /> Analyte MB MDL RL SPK MB IS/SS MB IS/SS <br /> Result Val %REC Limits <br /> TPH(g)(C6-C12) ND 0.87 1.0 - - - <br /> Surrogate Recovery <br /> 2-Fluorotoluene 0.094 0.1 94 60-140 <br /> Analyte LCS LCSD SPK LCS LCSD LCS/LCSD RPD RPD <br /> Result Result Val %REC %REC Limits Limit <br /> TPH(g)(C6-C12) 2.0 1.8 2 102 91 60-140 11.8 20 <br /> Surrogate Recovery <br /> 2-Fluorotoluene 0.098 0.093 0.10 98 93 60-140 4.78 20 <br /> CA ELAP 1644•NELAP 4033ORELAP <br /> Page 27 of 32 <br />