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Page 19 of 38 <br /> ' IV <br /> alscience �tti FCCfl9 <br /> AGnvironmental Quality Control - Spike/Spike Duplicate <br /> a :43 <br /> aboratories, Inc. <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 Matrix Instrument Prepared Analyzed Number <br /> 11-12-0247-3 Aqueous GC 11 12/06/11 12/06/11 111206501 <br /> Parameter SPIKE ADDED MS%REC MSD%REC %REC CL RPD RPD CL Qualifiers <br /> TPH as Gasoline 2000 78 81 68-122 4 0-18 <br /> r� <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 />