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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: 177315 <br /> Date Analyzed: 5/6/19 Extraction Method: SW5030B <br /> Instrument: GC 19,GC3 Analytical Method: SW802113/801513m <br /> Matrix: Soil Unit: mg/Kg <br /> Project: 11191863;212470-Tracy Chevron Sample ID: MB/LCS/LCSD-177315 <br /> 1905227-OOlAMS/MSD <br /> QC Summary Report for SW8021B/8015Bm <br /> Analyte LCS LCSD SPK LCS LCSD LCS/LCSD RPD RPD <br /> Result Result Val %REC %REC Limits Limit <br /> TPH(btex) 0.63 0.65 0.60 104 109 82-118 4.09 20 <br /> MTBE 0.087 0.088 0.10 87 88 61-119 0.589 20 <br /> Benzene 0.098 0.10 0.10 98 100 77-128 1.41 20 <br /> Toluene 0.10 0.10 0.10 102 103 74-132 1.59 20 <br /> Ethylbenzene 0.10 0.10 0.10 100 101 84-127 0.736 20 <br /> m,p-Xylene 0.20 0.21 0.20 102 103 80-120 0.891 20 <br /> o-Xylene 0.097 0.098 0.10 97 98 80-120 0.443 20 <br /> Surrogate Recovery <br /> 2-Fluorotoluene 0.093 0.091 0.10 93 91 75-134 1.90 20 <br /> Analyte MS MS MSD SPK SPKRef MS MSD MS/MSD RPD RPD <br /> DF Result Result Val Val %REC %REC Limits Limit <br /> TPH(btex) 1 0.53 0.52 0.60 ND 89 86 58-129 3.26 20 <br /> MTBE 1 0.072 0.070 0.10 ND 72 70 47-118 3.46 20 <br /> Benzene 1 0.075 0.080 0.10 ND 75 80 55-129 6.77 20 <br /> Toluene 1 0.081 0.083 0.10 ND 81 83 56-130 1.50 20 <br /> Ethylbenzene 1 0.082 0.082 0.10 ND 82 82 63-129 0 20 <br /> m,p-Xylene 1 0.17 0.17 0.20 ND 85 84 80-120 0.385 20 <br /> o-Xylene 1 0.085 0.083 0.10 ND 85 83 80-120 2.02 20 <br /> Surrogate Recovery <br /> 2-Fluorotoluene 1 0.075 0.077 0.10 75 77 62-126 2.17 20 <br /> CA ELAP 1644•NELAP 4033ORELAP <br /> Page 77 of 88 <br />