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Page 47 of 57 <br /> tiff <br /> eurof ins Quality Control - LCS <br /> Calscience <br /> Conestoga-Rovers&Associates Date Received: 06/14/14 <br /> 19449 Riverside Drive, Suite 230 Work Order: 14-06-1139 <br /> Sonoma, CA 95476-6955 Preparation: EPA 5030C <br /> Method: EPA 82608 <br /> Project: Cordes Ranch, Hansen Road,Tracy, CA Page 5 of 8 <br /> Quality Control Sample ID Type Matrix Instrument Date Prepared Date Analyzed LCS Batch Number <br /> 099-12-796-8593 LCS Solid GC/MS Q 06/16/14 06116/1412:38 140616L013 <br /> Parameter Soike Added Conc.Recovered LCS%Rec. 0/.Rec.CL Qualifiers <br /> Benzene 50.00 42.64 85 78-120 <br /> Elhylbenzene 50.00 42.30 85 76-120 <br /> Toluene 50.00 43.58 87 77-120 <br /> p/m-Xylene - 100.0 85.93 86 75-125 <br /> o-Xylene 50.00 44.10 88 75-125 <br /> 3 <br /> E <br /> tt <br /> RPD:Relative Percent Difference. CL:Control Limits <br /> 7440 Lincoln Way,Garden Grove,CA 92841-1427 TEL:(714)8955494 FAX:(714)894-7501 <br />