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Page 8 of 15 <br /> alscience <br /> nvironmenta/ Quality Control - Sample Duplicate <br /> aboratories, Inc. <br /> Cardno ERI Date Received: 11/06/13 <br /> 601 North McDowell Blvd. Work Order: 13-11-0353 <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 ID Matrix Instrument Date Prepared Date Analyzed Duplicate Batch Number <br /> V4NF-0X0 Air GC 53 NIA 11/06/13 15:30 13110606/ <br /> Parameter Sami)le Conc. DUP Conc. RPD RPD CL Qualifiers <br /> TPH as Gasoline 2629 2674 2 0-20 <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 />