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Page 20 of 38 <br /> ;alscience <br /> � 4G FU. <br /> M1 <br /> nvironmental Quality Control - Spike/Spike Duplicate ~t <br /> aboratories, Inc. 7 <br /> Cardno ERI Date Received: 12/03/11 <br /> 601 North McDowell Blvd. Work Order No: 11-12-0206 <br /> Petaluma, CA 94954-2312 Preparation: EPA 5030C <br /> Method: EPA 8015B (M) <br /> Project ExxonMobil99CAS/022789C <br /> Date Date MS/MSD Batch <br /> Quality Control Sample ID Matnx Instrument Prepared Analyzed Number <br /> W-33-DW2 Aqueous GC 11 12107/91 12187111 111207$89 <br /> Parameter SPIKE ADDED MS%REC MSD%REC %REC CL RPD RPD CL Qualifiers <br /> TPH as Gasoline 2000 93 95 68-122 1 0-18 <br /> c <br /> RPD-Relative Percent Difference, CL-Control Limit <br /> 7440 Lincoln Way, Garden Grove, CA 92841-1427 . TEL:(714)895-5494 . FAX: (714)894-7501 <br />