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Page 12 of 18 <br /> a1science <br /> • Upvironmental Quality Control - Laboratory Control Sample <br /> abcralorles, Inc. <br /> Kiff Analytical Date Received: NIA <br /> 2795 2nd Street, Shite 300 Work Order No: 05-04-0078 <br /> Davis, CA 95616-6593 Preparation: EPA 3010A Total <br /> Method: EPA 6010B <br /> Project: Sanchez-Sewer-Start <br /> Quality Control Sample ID Matrix Instrument Date Analyzed Lab File ID LCS Batch Number <br /> 097-01-0034,725 Aqueous ICP 33UU 04105f05 0504041-02 050404L02 <br /> Parameter Conc Added Conc Recovered LCS%Rec ° Re <br /> GL Qualifiers <br /> Cadmium 1.00 1.05 105 80-120 <br /> Chromium(Total) 1.00 1.02 102 80-120 <br /> Copper 1.00 1.01 101 80-120 <br /> Lead 1.00 1.02 102 80-12D <br /> Nickel 1.00 1.04 104 80-120 <br /> Zinc 1.00 1.04 104 80-120 <br /> RPD-Relative Percent Difference, CL-Control limit <br /> 7440 Lincoln Way, Garden Grove, CA 92841-1427 e TEL:(714) 895-5494 a FAX: (714) 894-7501 <br />