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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: 1910845 <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: 11202858-07.11;Chevron 372736 UDC Removal Sample ID: MB/LCS/LCSD-187314 <br /> QC Summary Report for SW8260B <br /> Analyte MB MDL RL SPK MB SS MB SS <br /> Result Val %REC Limits <br /> Benzene ND 0.0016 0.0050 - - - <br /> Ethylbenzene ND 0.0025 0.0050 - - - <br /> Toluene ND 0.0024 0.0050 - - - <br /> m,p-Xylene ND 0.0040 0.0050 - - - <br /> o-Xylene ND 0.0018 0.0050 - - - <br /> Surrogate Recovery <br /> Dibromofluoromethane 0.11 0.125 92 66-112 <br /> Toluene-d8 0.13 0.125 100 92-109 <br /> Benzene-d6 0.088 0.1 88 81-126 <br /> Ethyl benzene-d10 0.10 0.1 103 92-138 <br /> Analyte LCS LCSD SPK LCS LCSD LCS/LCSD RPD RPD <br /> Result Result Val %REC %REC Limits Limit <br /> Benzene 0.020 0.018 0.020 98 92 71-115 6.34 20 <br /> Ethylbenzene 0.020 0.020 0.020 98 101 80-128 2.78 20 <br /> Toluene 0.019 0.020 0.020 96 99 78-121 2.87 20 <br /> m,p-Xylene 0.041 0.042 0.040 103 105 80-122 2.39 20 <br /> o-Xylene 0.019 0.019 0.020 93 94 79-116 0.932 20 <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 /> Benzene-d6 0.095 0.090 0.10 95 90 81-126 6.23 20 <br /> Ethylbenzene-d10 0.10 0.11 0.10 104 106 92-138 1.41 20 <br /> CA ELAP 1644•NELAP 4033ORELAP <br /> Page 10 of 17 <br />