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Page 12 of 19 <br /> alscience <br /> _nvironmental Quality Control - LCS/LCS Duplicate <br /> AN aboratories, Inc. �e <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 5030B <br /> Method: EPA 8015B <br /> Project: PG&E TRACY MGP SITE <br /> Date Date LCS/LCSD Batch <br /> Quality Control Sample ID Matrix Instrument Prepared Analyzed Number <br /> 099-12-022-855 Aqueous GC 24 04/22/09 04/22/09 090422B01 <br /> Parameter LCS%REC LCSD%REC %REC CL RPD RPD CL Qualifiers <br /> Gasoline Range Organics 88 85 78-120 4 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) 894-7501 <br />