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Page 9 of 16 <br /> alsClenCe <br /> A—. nWronmenta/ Quality Control - Sample Duplicate <br /> L 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-3M <br /> Project: ExxonMobil 99CAS/022789C Page 1 of 1 <br /> Quality Control Sample IE] Matrix Instrument Date Prepared Date Analyzed Duplicate Batch Number <br /> V-DSCHG Air GC 13 N/A 10103113 13:44 131003001 <br /> Parameter Sample Conc. DUP Conc. RPD RPD CL Qualifiers <br /> TPH as Gasoline 63.11 63.00 0 0-20 <br /> 0 <br /> 0 <br /> U <br /> 0 <br /> E <br /> m <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 />