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CAL TECH Environmental Laboratories <br /> 10D6814 Rosecrans Avenue. Paramount- CA 90723-3146 <br /> Telephone: (562) 272-2700 Fax: (�63) 272-2789 <br /> QA/QC Report <br /> Method: 60108 <br /> Matrix: Soil <br /> Date Analyzed: 5/5/08 <br /> Units: 5/7/08 <br /> Perimeters Method LCS LCSD Spike LCS % LCSD % Limits RPD <br /> Blank Added Rec. Rec. <br /> Chromium 0 0.96 0.95 1 96 95 60-140 1 <br /> Copper 0 0.9 0.9 1 90 90 60-140 0 <br /> Lead 0 0.94 0.92 1 94 92 60-140 2 <br /> Nickle 0 0.92 0.91 1 92 91 60-140 1 <br /> Zinc 0 0.92 0.9 1 92 90 60-140 2 <br /> LCS: Laboratory Control Standard <br /> LCSD: Laboratory Control Standard Duplicate <br /> RPD: Relative Percent Difference of LCS and LCSD <br /> TOT\1.I l' I)L1)IC:1I LU 10 C't S I ONIIR SAlISFACI ION <br />