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I <br /> CALTECH Environmental Laboratories <br />' 6814 Rosecrans Avenue Palan10Llnt CA 90723-3146 <br /> Telephone (562) 272-2700 Fax (562) 272-2789 <br /> QA/QC Report <br /> 1 ' <br /> Method 8015M /8021 B <br /> Matrix Water <br />' Date Analyzed 12/2/04 <br /> Date Extracted 12/1/04 <br /> IPerimeters Conc u /L Spike Recover % Control Limits RPD <br /> LCS LCSD Added LCS LCSD Rec RPD <br /> Benzene 43 44 50 86 88 70-130 20 2 <br /> Toluene 44 44 50 88 88 70-130 20 0 <br /> Eth benzene 47 49 50 94 98 70-130 20 4 <br /> Xylenes 89 92 100 89 92 70-130 20 3 <br /> TPH - Gasoline 982 1012 1000 98 1 101 70-130 1 20 3 <br /> TPH - Diesel 2021 2044 2000 101 1 102 70-130 1 20 1 <br /> lie LCS Laboratory Control Standard <br /> LCSD Laboratory Control Standard Duplicate <br /> RPD Relative Percent Difference of LCS and LCSD <br /> I 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 ug/L. 05 <br /> Eth benzene ND u /L 05 <br /> Xylenes ND ug/L 1 <br /> TPH - Gasoline ND ug/L. 50 <br /> TPH - Diesel ND u /L 50 <br /> TOTALLY DEDIC A rF D TO CUSTOMER SATISFACTION <br />