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Page 8 of 14 <br /> Ca/ac/once <br /> Quality Control -Sample Duplicate <br /> Environmental <br /> 1 aboratorles,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-3M <br /> Project: ExxonMobil 99CAS/022789C Page 1 of 1 <br /> Quality Control 5ampic Ip Matrix Instrument Date Prepared Date Analyzed Duplicate Batch Number <br /> V•DSCHG Air GC 13 NIA 12/05/13 45:45 931205DOI <br /> Parameter Sample Conc. DUP Conc. RPD RPD CL Qualifiers <br /> TPH as Gasoline 26.64 24.70 8 0-20 <br /> 0 <br /> U <br /> 0 <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 />