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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: GHD WorkOrder: 1905227 <br /> Date Prepared: 5/3/19 BatchID: 177316 <br /> Date Analyzed: 5/4/19 Extraction Method: SW5030B <br /> Instrument: GC38 Analytical Method: SW8260B <br /> Matrix: Soil Unit: mg/kg <br /> Project: 11191863;212470-Tracy Chevron Sample ID: MB/LCS/LCSD-177316 <br /> 1905227-014AMS/MSD <br /> QC Summary Report for SW8260B <br /> Analyte MS MS MSD SPK SPKRef MS MSD MS/MSD RPD RPD <br /> DF Result Result Val Val %REC %REC Limits Limit <br /> Trichlorofluoromethane 1 0.017 0.018 0.020 ND 83 91 9-119 8.63 20 <br /> 1,2,3-Trichloropropane 1 0.017 0.018 0.020 ND 83 91 45-115 9.29 20 <br /> 1,2,4-Trimethylbenzene 1 0.018 0.020 0.020 ND 91 102 69-133 11.2 20 <br /> 1,3,5-Trimethylbenzene 1 0.019 0.021 0.020 ND 94 104 27-172 10.7 20 <br /> Vinyl Chloride 1 0.012 0.013 0.020 ND 59 64 33-114 8.66 20 <br /> m,p-Xylene 1 0.036 0.039 0.040 ND 89 97 62-117 9.03 20 <br /> o-Xylene 1 0.017 0.019 0.020 ND 87 95 19-144 8.02 20 <br /> Surrogate Recovery <br /> Dibromofluoromethane 1 0.12 0.11 0.12 93 92 66-116 0.688 20 <br /> Toluene-d8 1 0.12 0.12 0.12 98 100 86-110 1.18 20 <br /> 4-BFB 1 0.012 0.012 0.012 93 95 71-114 1.79 20 <br /> Benzene-d6 1 0.097 0.11 0.10 97 106 62-122 8.98 20 <br /> Ethyl benzene-d10 1 0.10 0.12 0.10 103 115 69-130 11.5 20 <br /> 1,2-DCB-d4 1 0.080 0.088 0.10 80 88 55-108 8.81 20 <br /> CA ELAP 1644•NELAP 4033ORELAP <br /> Page 75 of 88 <br />