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Page 21 of 31 <br /> z <br /> a/science <br /> nvironmental Quality Control - LCS/LCS Duplicate <br /> Aw aboratories, Inc. <br /> STANTEC Date Received: N/A <br /> 3017 Kilgore Road, Suite 100 Work Order No: 10-12-0722 <br /> Rancho Cordova, CA 95670-6141 Preparation: Ext. + D/I <br /> Method: EPA 801513(M) <br /> Project: ARCO Service Station No. 6080 <br /> Date Date LCS/LCSD Batch <br /> Quality Control Sample ID Matrix Instrument Prepared Analyzed Number <br /> 099-12-007-4,921 Solid GC 9 12/09/10 12/09/10 101209L01 <br /> Parameter LCS%REC LCSD%REC %REC CL RPD RPD CL Qualifiers <br /> Ethanol 86 88 68-122 2 0-19 <br /> Methanol 89 90 71-113 2 0-17 <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 />