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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: 177310 <br /> Date Analyzed: 5/4/19 Extraction Method: SW5030B <br /> Instrument: GC16 Analytical Method: SW8260B <br /> Matrix: Soil Unit: mg/kg <br /> Project: 11191863;212470-Tracy Chevron Sample ID: MB/LCS/LCSD-177310 <br /> QC Summary Report for SW8260B <br /> Analyte LCS LCSD SPK LCS LCSD LCS/LCSD RPD RPD <br /> Result Result Val %REC %REC Limits Limit <br /> Acetone 0.20 0.21 0.20 100 105 59-127 4.57 20 <br /> tert-Amyl methyl ether(TAME) 0.016 0.016 0.020 79 82 54-98 4.56 20 <br /> Benzene 0.017 0.018 0.020 86 88 71-115 2.26 20 <br /> Bromobenzene 0.018 0.017 0.020 89 85 69-120 4.30 20 <br /> Bromochloromethane 0.015 0.016 0.020 76 79 63-117 3.30 20 <br /> Bromodichloromethane 0.015 0.015 0.020 76 77 61-109 2.32 20 <br /> Bromoform 0.011 0.012 0.020 57 58 46-87 1.38 20 <br /> Bromomethane 0.013 0.015 0.020 66 73 22-195 9.09 20 <br /> 2-Butanone(MEK) 0.064 0.070 0.080 80 87 53-124 9.45 20 <br /> t-Butyl alcohol(TBA) 0.057 0.063 0.080 71 79 29-142 9.52 20 <br /> n-Butyl benzene 0.025 0.024 0.020 124 121 102-169 2.62 20 <br /> sec-Butyl benzene 0.023 0.023 0.020 116 117 100-166 0.868 20 <br /> tert-Butyl benzene 0.020 0.020 0.020 99 99 91-153 0 20 <br /> Carbon Disulfide 0.016 0.017 0.020 80 86 60-125 6.77 20 <br /> Carbon Tetrachloride 0.016 0.017 0.020 80 83 69-124 3.56 20 <br /> Chlorobenzene 0.018 0.018 0.020 88 89 73-116 1.04 20 <br /> Chloroethane 0.014 0.015 0.020 72 76 47-140 5.33 20 <br /> Chloroform 0.016 0.016 0.020 80 82 69-118 2.03 20 <br /> Chloromethane 0.013 0.014 0.020 66 69 30-132 4.47 20 <br /> 2-Chlorotoluene 0.020 0.020 0.020 102 101 75-147 1.43 20 <br /> 4-Chlorotoluene 0.020 0.020 0.020 100 98 75-137 2.01 20 <br /> Dibromochloromethane 0.014 0.015 0.020 72 75 57-105 4.01 20 <br /> 1,2-Dibromo-3-chloropropane 0.013 0.013 0.020 66 67 36-103 1.11 20 <br /> 1,2-Dibromoethane(EDB) 0.014 0.015 0.020 71 75 66-101 4.87 20 <br /> Dibromomethane 0.015 0.016 0.020 77 79 61-103 2.15 20 <br /> 1,2-Dichlorobenzene 0.017 0.017 0.020 83 83 59-104 0 20 <br /> 1,3-Dichlorobenzene 0.019 0.019 0.020 97 95 70-133 1.43 20 <br /> 1,4-Dichlorobenzene 0.017 0.017 0.020 84 84 68-123 0 20 <br /> Dichlorodifluoromethane 0.0069 0.0080 0.020 35 40 13-107 13.9 20 <br /> 1,1-Dichloroethane 0.016 0.017 0.020 82 84 69-118 2.94 20 <br /> 1,2-Dichloroethane(1,2-DCA) 0.015 0.016 0.020 76 78 59-112 3.35 20 <br /> 1,1-Dichloroethene 0.015 0.016 0.020 75 79 69-126 6.46 20 <br /> cis-1,2-Dichloroethene 0.017 0.017 0.020 84 87 69-116 3.64 20 <br /> trans-1,2-Dichloroethene 0.016 0.016 0.020 78 82 73-116 4.45 20 <br /> 1,2-Dichloropropane 0.016 0.016 0.020 79 81 65-111 2.57 20 <br /> 1,3-Dichloropropane 0.016 0.017 0.020 82 85 67-110 3.26 20 <br /> 2,2-Dichloropropane 0.018 0.018 0.020 89 92 65-125 3.23 20 <br /> 1,1-Dichloropropene 0.016 0.017 0.020 82 85 70-123 3.30 20 <br /> (Cont.) <br /> CA ELAP 1644•NELAP 4033ORELAP <br /> Page 65 of 88 <br />