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CALTECH Environmental Laboratories <br /> 6$14 Rosecrans Avenue, Paramount CA 90723-3146 <br /> Telephone (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 11/24/04 <br /> Perimeters Conc u L Spike Recovery % Control Limas RPD <br /> LCS LCSD Added LCS LCSD Rec. RPD <br /> Benzene 44 42 50 88 1 84 70-130 20 4 <br /> Toluene 42 41 50 84 82 70-130 20 2 <br /> Eth benzene 42 40 50 82 80 70-130 20 2 <br /> Xylenes 96 91 100 96 91 70-130 20 5 <br /> TPH -Gasoline 1044 1036 1000 104 104 70-130 20 0 <br /> TPH - Diesel 2069 2050 2000 103 102 70-130 20 1 <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 0 5 <br /> Benzene ND u /L 05 <br /> Toluene ND +gj/ <br /> 0 5 <br /> Eth benzene ND 0 5 <br /> Xylenes ND 1 <br /> TPH - Gasoline ND 50 <br /> TPH - Diesel ND 50 <br /> TOTALLY DEDICA'FED TO CUSTOMER SATISFACTION <br />