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Page 10 of 16 <br /> L alsclence <br /> nvlronmentat Quality Control - LCS/LCSD <br /> f.aboratories, Inc. <br /> Cardno ERI Date Received: 10/03/13 <br /> 601 North McDowell Blvd. Work Order: 13-10-0243 <br /> Petaluma, CA 94954-2312 Preparation: N/A <br /> Method: EPA TO-15M <br /> Project: ExxonMobil 99CAS/022789C Page 1 of 3 <br /> Quah1y Control Sample 117 Matrix Instrument Date Prepared Date Analyzed LCS/LCSD Batch Number <br /> ,63`3-12-1.83-30311 Air GCIMS K NIA 1 W0311 3 14.00 i3.WXM <br /> Parameter Soike LCS LCS LCSD LCSD %Rec.CL RPD RPD CL Qualifiers <br /> Added Conc. Conc. ° Re . <br /> Benzene 0.07987 0.08807 110 0.08723 109 60-156 1 0-40 <br /> Toluene 0.09421 0.1052 112 0.1027 109 56-146 2 0-43 <br /> Ethylbenzene 0.1086 0.1201 111 0.1189 110 52-154 1 0-38 <br /> p/m-Xylene 0.2171 0.2461 113 0.2433 112 42-156 1 0-41 <br /> o-Xylene 0.1086 0.1193 110 0.1195 110 52-148 0 0-38 <br /> Methyl-t-Butyl Ether(MTBE) 0.09013 0.1001 111 0.1004 111 50-150 0 0-35 <br /> RPD:Relative Percent Difference. CL:Control Limits <br /> 7440 Lincoln Way,Garden Grove.CA 92841-1427 • TEL:(714)895-5494 • FAX:('/14)894-7501 <br />