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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: 09/13/2023 BatchID: 277990 <br /> Date Analyzed: 09/14/2023 Extraction Method: SW5035 <br /> Instrument: GC19 Analytical Method: SW802113/801513m <br /> Matrix: Soil Unit: mg/Kg <br /> Project: San Joaquin County Corp Yard Sample ID: MB/LCS/LCSD-277990 <br /> QC Summary Report for SW8021B/8015Bm <br /> Analyte MB MDL RL SPK MB SS MB SS <br /> Result Val %REC Limits <br /> TPH(g)(C6-C12) ND 0.48 1.0 - - <br /> MTBE ND 0.0025 0.050 - - <br /> Benzene ND 0.0014 0.0050 - - <br /> Toluene ND 0.0021 0.0050 - - <br /> Ethylbenzene ND 0.00093 0.0050 - - <br /> m,p-Xylene ND 0.0024 0.010 - - <br /> o-Xylene ND 0.00090 0.0050 - - - <br /> Surrogate Recovery <br /> 2-Fluorotoluene 0.080 0.1 80 75-134 <br /> Analyte LCS LCSD SPK LCS LCSD LCS/LCSD RPD RPD <br /> Result Result Val %REC %REC Limits Limit <br /> TPH(btex) 0.56 0.55 0.60 93 92 82-118 1.34 20 <br /> MTBE 0.095 0.098 0.10 95 98 61-119 3.19 20 <br /> Benzene 0.078 0.082 0.10 78 82 77-128 4.03 20 <br /> Toluene 0.084 0.087 0.10 84 87 74-132 3.58 20 <br /> Ethylbenzene 0.087 0.089 0.10 87 89 84-127 2.26 20 <br /> m,p-Xylene 0.17 0.18 0.20 87 90 80-120 2.92 20 <br /> o-Xylene 0.087 0.089 0.10 87 89 80-120 1.39 20 <br /> Surrogate Recovery <br /> 2-Fluorotoluene 0.077 0.080 0.10 77 80 75-134 4.55 20 <br /> CA ELAP 1644•NELAP 4033ORELAP <br /> Page 22 of 28 <br />