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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 Services,Inc. WorkOrder: 1910846 <br /> Date Prepared: 10/17/19 BatchID: 187314 <br /> Date Analyzed: 10/17/19 Extraction Method: SW5030B <br /> Instrument: GC38 Analytical Method: SW8260B <br /> Matrix: Soil Unit: mg/kg <br /> Project: 11202858-07.00;Chevron 372736-UDC Removal Sample ID: MB/LCS/LCSD-187314 <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 0.13 0.12 0.12 101 94 66-112 7.45 20 <br /> Toluene-d8 0.13 0.13 0.12 100 101 92-109 0.667 20 <br /> 4-BFB 0.013 0.012 0.012 101 98 72-112 3.25 20 <br /> Benzene-d6 0.095 0.090 0.10 95 90 81-126 6.23 20 <br /> Ethyl benzene-d10 0.10 0.11 0.10 104 106 92-138 1.41 20 <br /> 1,2-DCB-d4 0.082 0.085 0.10 82 85 68-108 2.62 20 <br /> CA ELAP 1644•NELAP 4033ORELAP <br /> Page 22 of 29 <br />