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Page 15 of 22 <br /> alscience <br /> A._nvironmental Quality Control - LCS/LCS Duplicate <br /> mw aboratories, Inc. <br /> Kiff Analytical Date Received: N/A <br /> 2795 2nd Street, Suite 300 Work Order No: 09-01-1418 <br /> Davis, CA 95616-6593 Preparation: EPA 30508 <br /> Method: EPA 60108 <br /> Project: Stockton Promenade <br /> Date Date LCS/LCSD Batch <br /> Quality Control Sample ID Matrix Instrument Prepared Analyzed Number <br /> 097-01-002-11,970 Solid ICP 5300 01/21/09 01/22/09 090121L05 <br /> Parameter LCS%REC LCSD%REC %REC CL RPD RPD CL Qualifiers <br /> Cadmium 107 114 80-120 6 0-20 <br /> Chromium 101 107 80-120 5 0-20 <br /> Lead 105 111 80-120 6 0-20 <br /> Nickel 109 116 80-120 6 0-20 <br /> Zinc 103 108 80-120 5 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 />