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Page 9 of 14 <br /> Ca/science <br /> Quality Control - LCS/LCSD <br /> Enlvlronmantal <br /> Laboratorlos,Inc. <br /> Cardno ERI Date Received: 12/05/13 <br /> 601 North McDowell Blvd. Work Order: 13-12-0336 <br /> Petaluma, CA 94954-2312 Preparation: N/A <br /> Method: EPA TO-15M <br /> Project: ExxonMobil 99CAS/022789C Page 1 of 2 <br /> Quality Control Sample ID Matrix Instrument Date Prepared Date Analyzed LCS/LCSD Batch Number <br /> 699.12-9833220 Air GCIMS NN NIA 12106113 16.47 131205L03 <br /> Parameter Soike LCS LCS LCSD LCSD %Rec.CL RPD RPD CL Qualifiers <br /> ed Zo c. ec. Zonc. =. e . <br /> Benzene 0.07987 0.07140 89 0.07108 89 60-156 0 0-40 <br /> Toluene 0.09421 0.07813 83 0.07770 82 56-146 1 0-43 <br /> Ethylbenzene 0.1086 0.09466 87 0.09228 85 52-154 3 0-38 <br /> p/m-Xylene 0.2171 0.2084 96 0.2042 94 42-156 2 0-41 <br /> o-Xylene 0.1086 0.1016 94 0.09922 91 52-148 2 0-38 <br /> Methyl-t-Butyl Ether(MTBE) 0.09013 0.07021 78 0.07253 80 50-150 3 0-35 <br /> RPD:Relative Percent Difference. CL:Control Limits <br /> 7440 Lincoln Way,Garden Grove,CA 92841-1427 - TEL:(714)895-5494 • FAX:(714)894-7501 <br />