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CAL TECH Environmental Laboratories <br /> Co11 Ro�e�l un r��uItW. I'nlI n! cult l 1 t1(lI'.-il Ib <br /> ���� _7i_'i <br /> QA/QC Report <br /> Method: 60108 <br /> Matrix: Soil <br /> Date Analyzed: 11/19/07 <br /> Units: m k/Kg <br /> Perimeters Method LCS LCSD Spike LCS % LCSD % Limits RPD <br /> Blank Added Rec. Rec. <br /> Chromium 1 0 1 0.998 0.965 1 100 97 60-140 1 3 <br /> Copper 0 1 0.99 0.974 1 99 97 60-140 2 <br /> Lead 0 1.12 1.15 1 112 115 60-140 3 <br /> Nickle 0 1 1.05 1.01 1 105 101 60-140 4 <br /> Zinc 0 1 0.985 0.961 1 99 96 60-140 3 <br /> LCS: Laboratory Control Standard <br /> LCSD: Laboratory Control Standard Duplicate <br /> RPD: Relative Percent Difference of LCS and LCSD <br /> "I,OTAI.l,Y DFDl(',,'I`GI) 10 (l'tiI(MER SAFISFA("CION <br />