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Calscience <br />Environmental <br />Laboratories, Inc. <br />Cardno ERI <br />601 North McDowell Blvd. <br />Petaluma, CA 94954-2312 <br />Quality Control - LCS/LCS Duplicate <br />Project: ExxonMobil99CAS/022789C <br />Date Received: <br />Work Order No: <br />Preparation: <br />Method: <br />Page 15 of 22 <br />N/A <br />11-09-1799 <br />EPA 3550B <br />EPA 8015B (M) <br />RPD - Relative Percent Difference , CL - Control Limit <br />A"A 7440 Lincoln Way, Garden Grove, CA 92841-1427 . TEL:(714) 895-5494 . FAX: (714) 894-7501 <br />Date <br />Date <br />LCS/LCSD Batch <br />Quality Control Sample ID <br />Matrix Instniment <br />Prepared <br />Analyzed <br />Number <br />099-12-275-4,148 <br />Solid GC 46 <br />09/28/11 <br />09/28/11 <br />1109281310 <br />Parameter <br />SPIKE ADDED LCS %REC <br />LCSD %REC <br />%REC CL RPD <br />RPD CL Qualifiers <br />TPH as Diesel <br />400.0 96 <br />92 <br />75-123 4 <br />0-12 <br />RPD - Relative Percent Difference , CL - Control Limit <br />A"A 7440 Lincoln Way, Garden Grove, CA 92841-1427 . TEL:(714) 895-5494 . FAX: (714) 894-7501 <br />