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CALTECH Environmental Laboratories <br />' 6814 Rosecrans Avenue Paiamount CA 90723-3146 <br /> O Telephone (562) 272-2700 Fax (562) 272-2789 <br /> I <br /> QA/QC Report <br /> Method 8015M 18021 B <br /> Matrix Water <br />' Date Analyzed 12/17/04 <br /> Date Extracted 12/17/04 <br />' Perimeters Conc. u /L Spike Recovery % Control Limits RPD <br /> LCS LCSD Added LCS LCSD Rec RPD <br />' Benzene 46 45 50 92 90 70-130 20 2 <br /> Toluene 45 45 50 90 90 70-130 20 0 <br /> Eth benzene 49 47 50 98 94 70-130 20 4 <br /> Xylenes 98 91 100 98 91 70-130 20 7 <br /> TPH - Gasoline 1061 1018 1000 106 1 102 70-130 20 4 <br /> TPH - Diesel 2043 2106 2000 102 1 105 70-130 20 2 <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 ug/L. 05 <br /> Benzene ND u /L 0 5 <br /> Toluene ND u /L 05 <br /> Eth benzene ND u /L 05 <br /> Xylenes ND ug/L 1 <br /> TPH - Gasoline ND u /L 50 <br /> TPH - Diesel ND u /L 50 <br /> TOTALLY DCDICXFED FO CUSTOMER SATISFACTION <br />