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Page 9 of 16 <br /> valscience <br /> _nvironmental Quality Control - LCS/LCS Duplicate <br /> aboratories, Inc. <br /> STANTEC Date Received: N/A <br /> 3017 Kilgore Road, Suite 100 Work Order No: 10-12-1103 <br /> Rancho Cordova, CA 95670-6141 Preparation: EPA 3050B <br /> Method: EPA 6010B <br /> Project: ARCO Service Station No. 6080 <br /> Date Date LCS/LCSD Batch <br /> Quality Control Sample ID Matrix Instrument Prepared Analyzed Number <br /> 097-01-002-14,435 Solid ICP 5300 12/15110 12/16/10 101215L01 <br /> Parameter LCS%REC LCSD%REC %REC CL RPD RPD CL Qualifiers <br /> Lead 102 99 80-120 2 0-20 <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 />