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CALTECH Environmental Laboratories <br /> 6814 Rosecrans Avenue, Paramount, CA 90723-3 146 <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: 11/23/04 <br /> ' Perimeters Cork. u IL Spike Recovery % Control Limits RPD <br /> LCS LCSD Added LCS LCSD Rec. RPD <br /> ' Benzene 46 1 45 50 92 90 70-130 20 2 <br /> Toluene 46 45 50 92 90 70-130 20 2 <br /> Eth benzene 51 47 1 50 102 94 .70-130 20 8 <br /> Xylenes 102 94 i00 102 94 70-130 20 1 8 <br /> ' TPH - Gasoline 1061 1009 1 1000 106 101 70-130 20 5 <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 u2/1- 0.5 <br /> Toluene ND u /L 0.5 <br /> Eth benzene ND u /L 0.5 <br /> ' <br /> Xylenes ND ug/L 1 <br /> TPH - Gasoline ND ug/L 50 <br /> TOTALLY DEDICATED TO CUSTMIER SATISFACTION <br />