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Page 14 of 19 <br /> alscience <br /> _nvironmental Quality Control - LCS/LCS Duplicate �° <br /> AN aboratories, Inc. <br /> Q ne <br /> Parsons Date Received: N/A <br /> 2121 North California Blvd., Suite 500 Work Order No: 09-04-1683 <br /> Walnut Creek, CA 94596-7305 Preparation: EPA 3510C <br /> Method: EPA 8015B (M) <br /> Project: PG&E TRACY MGP SITE <br /> Date Date LCS/LCSD Batch <br /> Quality Control Sample ID Matrix Instrument Prepared Analyzed Number <br /> 099-12-234-412 Aqueous GC 45 04/23/09 04/24/09 0904231321 <br /> Parameter LCS%REC LCSD%REC %REC CL RPD RPD CL Qualifiers <br /> TPH as Motor Oil 104 112 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 />