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alscience <br />nvironmental <br />JL aboratories, 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 9 of 16 <br />N/A <br />11-08-1796 <br />EPA 3510C <br />EPA 8015B (M) <br />Dale Date LCS/LCSD Batch <br />Quality Control Sample ID Matrix Instrument Prepared Analyzed Number <br />099-12-330-1,991 Aqueous GC 27 08/26/11 08/30/11 110826804 <br />Parameter LCS %REC LCSD %REC %REC CL RPD RPD CL Qualifiers <br />TPH as Diesel 106 99 75-117 7 0-13 <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 />