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CALTECH Environmental Laboratories <br /> O6814 Rosecrans Avenue Pat ailiont CA 90723-3 146 <br /> uTelephone {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 /> Benzene 46 45 50 92 90 70-130 20 2 <br /> Toluene 46 45 50 92 90 1 70-130 20 2 <br /> Eth benzene 51 47 50 102 94 70-130 20 8 <br /> Xylenes 102 94100 1 102 94 70-130 20 8 <br /> TPH - Gasoline 1061 1009 1000 1 106 101 70-130 1 20 5 <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 /> MTBE ND u /L 05 <br /> Benzene ND u /L 05 <br /> Toluene ND u /L 05 <br /> Eth benzene ND u /L 05 <br /> Xylenes ND uq/L 1 <br /> TPH Gasoline ND u /L I50 <br /> TOTALLY DEDICAI ED TO CUSTOMER SATISFACTION <br />