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l <br /> CALTECH Environmental Laboratories <br /> O6814 Rosecrans Avenue Paramount CA 90723-3146 <br /> Telephone (562) 272-2700 Fax (562) 272-2789 <br /> QA/QC Report <br /> Method 8015M /8021 B <br /> Matrix Water <br />' Date Analyzed 11/23/04 <br /> Date Extracted 11/23/04 <br />' Perimeters Conc u /L Spike Recover % Control Limits RPD <br /> LCS LCSD Added LCS LCSD Rec RPD <br /> I Benzene 43 42 50 86 84 70-130 20 2 <br /> Toluene 43 41 50 86 82 70-130 20 4 <br /> Eth benzene 44 42 50 88 84 70-130 20 4 <br /> I <br /> Xylenes 99 92 100 99 92 70-130 20 7 <br /> TPH - Gasoline 1011 988 1000 101 99 70-130 20 1 3 <br /> LCS Laboratory Control Standard <br /> LCSD Laboratory Control Standard Duplicate <br /> RPD Relative Percent Difference of LCS and LCSD <br /> Method Blank <br /> Perimeters Method Units Det <br /> Blank Limit <br /> I MTBE ND u /L 05 <br /> Benzene ND u /L 05 <br /> Toluene NDqu <br /> 05 <br /> I Eth benzene ND 05 <br /> Xylenes ND 1 <br /> TPH - Gasoline ND 50 <br /> TOTAL LY DCDICArFD TO CUSTOMER SATISFACTION <br />