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CALTECH Environmental Laboratories <br />' 6814 Rosecrans Avenue Paianiount CA 90723-3146 <br /> C O Telephone (562) 272-2700 Fax (562) 272-2789 <br /> QA/QC Report <br /> I <br /> Method 8015M/8021 B <br /> Matrix Water <br />' Date Analyzed 2/17/05 <br /> Date Extracted 2/17/05 <br />' Perimeters Cone u /L Spike Recovery % Control Limits RPD <br /> LCS LCSD Added LCS LCSD Rec RPD <br />' Benzene 51 53 50 102 106 70-130 20 4 <br /> Toluene 46 49 50 92 98 70-130 20 6 <br /> Eth benzene 47 50 50 94 100 70-130 20 6 <br /> ,Xylenes 97 104 100 97 104 70-130 20 7 <br /> TPH - Gasoline 1065 1099 1000 107 110 70-130 1 20 3 <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 ug/L__A ug/L__ 1 <br /> TPH - Gasoline ND u /L 50 <br /> TOTALLY DEDICATED TO CUSTOMER SATISFACTION <br />