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CALT EC.H Environmental Laboratories <br /> O6814 Rosecrans Avenue PalallIOUnt CA 90723-3146 <br /> Telephone (562) 272-2700 Fax (562) 272-2789 <br /> QA/QC Report <br /> 1 <br /> Method 8015M /8021B <br />' Matrix Water <br />' Date Analyzed 11/18/04 <br /> Date Extracted 11/18/04 <br /> Perimeters Conc u /L Spike Recover % Control Limits RPD <br /> LCS LCSD Added LCS LCSD Rec RPD <br />' Benzene 46 47 50 92 94 70-130 20 2 <br /> Toluene 46 47 50 92 94 70-130 20 2 <br /> Eth benzene 45 48 50 90 96 70-130 20 6 <br /> Xylenes 105 107 100 105 107 70-130 20 2 <br /> TPH - Gasoline 1028 1055 1000 103 106 70-130 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 0 5 <br /> Benzene ND u /L 05 <br /> Toluene ND u /L 05 <br /> Eth benzene ND u /L 05 - <br /> X lenes ND u /L 1 <br /> TPH - Gasoline ND u /L 50 <br /> 1 <br /> 1 <br /> TOTALLY DEDICATED TO CUSTOMER SATISFACTION <br />