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alscience <br />j�_nvironmental <br />aboratories, Inc. <br />Cardno ERI <br />601 North McDowell Blvd. <br />Petaluma, CA 94954-2312 <br />Quality Control - LCS/LCS Duplicate <br />Date Received: <br />Work Order No: <br />Preparation: <br />Method: <br />Page 25 of 43 <br />N/A <br />11-05-1637 <br />EPA 5030C <br />EPA 8015B (M) <br />Project: ExxonMobil99CAS/022789C <br />Date Date LCS/LCSD Batch <br />Quality Control Sample ID Matrix Inslrunion( Prepared Analyzed Number <br />099-12-436-6,258 Aqueous GC 29 05/27111 05127111 110527B0l <br />Parameter LCS %REC LCSD %REC %REC CL RPD RPD CL Qualifiers <br />TPH as Gasoline 106 108 78-120 2 0-10 <br />RPD -Relative Percent Difference . CL -Control Limit <br />7440 Lincoln Way, Garden Grove, CA 92841-1427. TEL:(714) 895-5494. FAX: (714) 894-750' <br />