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Page 17 of 31 <br /> • s <br /> alscience <br /> nvironmental Quality Control - Spike/Spike Duplicate <br /> aboratories, Inc. <br /> STANTEC Date Received: 12/09/10 <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 8015B(M) <br /> Proiect ARCO Service Station No. 6080 <br /> Date Date MS/MSD Batch <br /> Quality Control Sample ID Matrix Instrument Prepared Analyzed Number <br /> D-1-3.5 Solid GC 9 12/09/10 12/10/10 101209501 <br /> Parameter MS%REC MSD%REC %REC CL RPD RPD CL Qualifiers <br /> Ethanol 85 85 72-114 1 0-20 <br /> Methanol 89 90 66-120 1 0-22 <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 />