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I <br /> CALTECH Environmental Laboratories <br /> O6814 Rosecrans Avenue Paianiount CA 90723-3146 <br /> 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 12/23/04 <br /> Date Extracted 12/23/04 <br />' Perimeters Cone u L Spike Recover % Control Limits RPD <br /> LCS LCSD Added LCS LCSD Rec RPD <br />' Benzene 40 42 50 80 84 70-130 20 4 <br /> Toluene 41 42 50 82 84 70-130 20 2 <br /> Eth benzene 45 47 50 90 94 70-130 20 4 <br /> Xylenes 90 93 100 90 93 70-130 20 3 <br /> TPH - Gasoline 1027 1 1051 1000 103 105 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 />' Method Blank <br />' Perimeters Method Units Det <br /> Blank Limit <br /> MTBE ND u /L 05 <br /> Benzene ND u /L 0 5 <br /> Toluene ND u /L 05 <br /> Eth benzene ND u /L 05 <br />' <br /> Xylenes ND u /L 1 <br /> TPH - Gasoline ND u /L 50 <br /> 1 <br /> 1 <br /> TOTALLY DEDICAFED f0 CUSTOMER SATISFACTION <br />