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Page 22 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 35506 <br /> Method: EPA 80158 (M) <br /> Project: Cordes Ranch, Hansen Road, Tracy, CA Page 1 of 4 <br /> Quality Control Sample ID Type Matrix Instrument Date Prepared Date Analyzed LCS Batch Number <br /> 099-15430-40 LCS Solid GC 47 05/23/14 05/24/1406:01 140523B15 <br /> Parameter Spike Added Conc Recovered LCS%Rec. %Re .CL Qualifiers <br /> TPH as Crude Oil 400.0 303.0 76 75-123 <br /> i <br /> r`r <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 />