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Page 20 of 36 <br /> alscience <br /> A& nvironmental Quality Control - Spike/Spike Duplicate w` <br /> :W C, M . <br /> &-�� <br /> 1. a�boratories, Inc. r <br /> Cardno ERI Date Received: 03/17/12 <br /> 601 North McDowell Blvd. Work Order No: 12-03-1242 <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 /> 12-03-1239-1 Aqueous GC 57 03/19/12 03/19/12 120319501 <br /> Parameter SPIKE ADDED MS%REC MSD%REC %REC CL RPD RPD CL Qualifiers <br /> TPH as Gasoline 2000 101 103 68-122 1 0-18 <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 />