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CALTECH Environmental Laboratories <br /> O6414 Rosecrans Avenue. Paramount, CA 90723-3146 <br /> Telephone: (562) '272-2700 Fax: (562) 272-2749 <br /> QA/QC Report <br /> Method: 8260B <br /> Matrix: Water <br /> Date Analyzed: 11/20/04 <br /> Date Extracted: 11/20/04 <br /> Perimeters Conc. ug/L Spike Recovery % Control Limits RPD <br /> LCS LCSD Added LCS LCSD Rec. RPD <br /> 1,1-Dichloroethene 45 48 50 90 96 70-130 20 6 <br /> Benzene 48 52 50 96 104 70-130 20 8 <br /> Trichloroethene 48 52 50 96 104 70-130 20 8 <br /> Toluene 51 54 50 102 108 70-130 20 6 <br /> Chlorobenzene 50 53 50 100 106 70-130 20 6 <br /> m.p-X lenes 109 118 100 109 1 118 70-130 1 20 8 <br /> LCS: Laboratory Control Standard <br /> LCSD: Laboratory Control Standard Duplicate <br /> RPD: Relative Percent Difference of LCS and LCSD <br /> Perimeters Method Units Det. <br /> Blank Limit <br /> 1,1-Dichloroethene ND ug/L 1 <br /> Benzene ND ug/L 0.5 <br /> Trichloroethene ND ug/L 0.5 <br /> Toluene ND ug/L 0.5 <br /> Chlorobenzene ND ug/L 0.5 <br /> m,p-Xylenes ND ug/L 0.6 <br /> MTBE ND u /L 1 <br /> TBA ND u /L 10 <br /> DIPE ND ug/L 1 <br /> ETBE ND ug/L 1 <br /> TAME ND u /L 1 <br /> 1,2-Dichloroethane ND u /L 0.5 <br /> EDB ND u /L 0.5 <br /> Ethylbenzene ND u /L 0.5 <br /> lo-Xylene ND ug/L 0.6 <br /> TOTALLY DEDICATED "CO Cl'STOMER SATISFACTION <br />