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CALTECH Environmental Laboratories <br />' 6814 Rosecrans Avenue Pal amount CA 90723-3146 <br /> . Telephone (562) 272-2700 Fax (562) 272-2789 <br /> 1 <br /> QA/QC Report <br /> 1 <br /> Method 8015M /8021 B <br />' Matrix Water <br /> Date Analyzed 1/21105 <br />' Date Extracted 1/21/05 <br />' Perimeters Cone u /L Spike Recover % Control Limits RPD <br /> LCS LCSD Added LCS LCSD Rec RPD <br /> Benzene 47 1 48 50 94 96 70-130 20 2 <br />' Toluene 42 45 50 84 90 70-130 20 6 <br /> Eth benzene 45 47 50 90 94 70-130 20 4 <br />' <br /> Xylenes 92 99 100 92 99 70-130 20 7 <br /> TPH - Gasoline 991 1011 1000 99 101 70-130 1 20 2 <br /> LCS Laboratory Control Standard <br /> LCSD Laboratory Control Standard Duplicate <br /> RPD Relative Percent Difference of LCS and LCSD <br />' <br /> Method Blank <br />' Perimeters Method Units Det <br /> Blank Limit <br /> MTBE ND u /L 0 5 <br /> Benzene ND u /L 0 5 <br /> Toluene ND u /L 0 5 <br /> Eth benzene ND ug/L. 0 5 - <br />' <br /> Xylenes ND u /L 1 <br /> TPH - Gasoline ND u IL 50 <br /> 1 <br />' <br /> TOTALLYD DIC ATE,D TO CUSTOMER SATISFACTION <br /> E <br />