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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 LCS LCSD SPK LCS LCSD LCS/LCSD RPD RPD <br /> Result Result Val %REC %REC Limits Limit <br /> cis-1,3-Dichloropropene 0.016 0.016 0.020 78 81 60-140 3.94 30 <br /> trans-1,3-Dichloropropene 0.016 0.016 0.020 78 81 60-140 4.03 30 <br /> Diisopropyl ether(DI PE) 0.014 0.016 0.020 72 78 60-140 9.04 30 <br /> Ethylbenzene 0.017 0.018 0.020 87 88 60-140 0.943 30 <br /> Ethyl tert-butyl ether(ETBE) 0.013 0.015 0.020 67 74 60-140 10.4 30 <br /> Freon 113 0.013 0.015 0.020 64 75 50-140 16.2 30 <br /> Hexachlorobutadiene 0.019 0.017 0.020 97 83 60-140 14.9 30 <br /> Hexachloroethane 0.021 0.019 0.020 104 93 60-140 10.8 30 <br /> 2-Hexanone 0.010 0.011 0.020 52 54 40-140 3.73 30 <br /> Isopropyl benzene 0.023 0.022 0.020 115 109 60-140 5.04 30 <br /> 4-Isopropyl toluene 0.023 0.021 0.020 114 104 60-150 8.58 30 <br /> Methyl-t-butyl ether(MTBE) 0.013 0.014 0.020 65 72 50-140 10.2 30 <br /> Methylene chloride 0.023 0.023 0.020 114 116 60-140 1.58 30 <br /> 4-Methyl-2-pentanone(MIBK) 0.011 0.012 0.020 56 60 50-140 7.52 30 <br /> Naphthalene 0.0051 0.0055 0.020 25,F2 28,F2 30-140 8.71 30 <br /> n-Propyl benzene 0.023 0.022 0.020 115 110 60-140 4.27 30 <br /> Styrene 0.015 0.015 0.020 75 77 60-140 1.70 30 <br /> 1,1,1,2-Tetrachloroethane 0.016 0.016 0.020 79 81 60-140 1.42 30 <br /> 1,1,2,2-Tetrachloroethane 0.015 0.015 0.020 77 74 40-140 4.38 30 <br /> Tetrachloroethene 0.018 0.018 0.020 88 90 60-140 2.29 30 <br /> Toluene 0.018 0.018 0.020 88 91 60-140 3.29 30 <br /> 1,2,3-Trichlorobenzene 0.0072 0.0071 0.020 36,F2 36,F2 40-140 0.810 30 <br /> 1,2,4-Trichlorobenzene 0.010 0.010 0.020 51 52 50-140 1.88 30 <br /> 1,1,1-Trichloroethane 0.016 0.017 0.020 79 84 60-140 6.43 30 <br /> 1,1,2-Trichloroethane 0.016 0.016 0.020 81 82 60-140 1.03 30 <br /> Trichloroethene 0.017 0.018 0.020 83 89 60-140 6.82 30 <br /> Trichlorofluoromethane 0.013 0.015 0.020 63 73 50-140 15.3 30 <br /> 1,2,3-Trichloropropane 0.0089 0.0086 0.010 89 86 60-130 3.65 30 <br /> 1,2,4-Trim ethyl benzene 0.020 0.019 0.020 98 94 30-140 3.59 30 <br /> 1,3,5-Trim ethyl benzene 0.021 0.020 0.020 106 100 60-140 6.08 30 <br /> Vinyl Chloride 0.0061 0.0081 0.010 61 81 30-140 29.1 30 <br /> m,p-Xylene 0.036 0.036 0.040 89 89 60-140 0.510 30 <br /> o-Xylene 0.016 0.016 0.020 79 80 60-140 1.29 30 <br /> (Cont.) <br /> CA ELAP 1644•NELAP 4033ORELAP <br />