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Page 8 of 18 <br /> Ciai-Invironmental <br /> science <br /> Quality Control - Spike/Spike Duplicate <br /> A = <br /> aboratories, Inc. <br /> Klff Analytical Date Received 05/17/05 <br /> 2795 2nd Street, Suite 300 Work Order No 05-05-1068 <br /> Davis, CA 95616-6593 Preparation EPA 3010A Total <br /> Method EPA 6010B <br /> Project 2575 Country Club Boulevard, Stockton <br /> Date Date MS/MSD Batch <br /> Quality Control Sample ID Matrix Instrument Prepared Analyzed Number <br /> d �w <br /> Parameter MS%REC MSD%REC %REC CL RPD RPR CL Qualifiers <br /> Cadmium 108 108 80-120 a 0-20 <br /> Chromium(Total) 112 112 80-120 0 0-20 <br /> Copper 99 99 80-120 0 0-20 <br /> Lead ill 109 80-120 2 0-20 <br /> Nickel 107 107 80-120 0 0-20 <br /> Zinc 113 113 80-120 0 0-20 <br /> • <br /> RPD-Relative Percent Difference CL-Control Umit <br /> 7440 Lincoln Way, Garden Grove, CA 92841-1427 . TEL (714) 895-5494 FAX (714) 894-7501 <br />