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Page 23 of 31 <br /> alscience <br /> ` nvironmental Quality Control LCS <br /> aboratories, Inc. <br /> Conestoga-Rovers&Associates Date Received: 05/22/14 <br /> 19449 Riverside Drive, Suite 230 Work Order: 14-05-1684 <br /> Sonoma, CA 95476-6955 Preparation: EPA 3550B <br /> Method: EPA 8015B (M) <br /> Project: Cordes Ranch, Hansen Road, Tracy, CA Page 2 of 4 <br /> Quality Control Sample In Type Matrix Instrument Date Prepared Date Analyzed LCS Batch Number <br /> 099-15-430-41 LCS Solid GC 47 05123/14 05/24/1400:56 14052313155 <br /> Parameter Spike Added Conc.Recovered LCS%Rec. %Rec.CL Qualifiers <br /> TPH as Crude Oil 400.0 303.9 76 75-123 <br /> 6 <br /> O <br /> U <br /> E <br /> 3 <br /> K <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 />