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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 /> Surrogate Recovery <br /> Dibromofluoromethane 0.11 0.11 0.12 89 90 66-112 0.676 20 <br /> Toluene-d8 0.13 0.13 0.12 103 104 92-109 1.11 20 <br /> 4-BFB 0.012 0.012 0.012 95 93 72-112 2.00 20 <br /> Benzene-d6 0.10 0.10 0.10 101 104 81-126 3.01 20 <br /> Ethyl benzene-d10 0.11 0.11 0.10 111 115 92-138 2.80 20 <br /> 1,2-DCB-d4 0.086 0.086 0.10 86 86 68-108 0 20 <br /> (Cont.) <br /> CA ELAP 1644•NELAP 4033ORELAP <br /> Page 67 of 88 <br />