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CALTECH ECH Environmental Laboratories <br /> C6814 Roxct tns AN enuc. P<u:un, unt. t \ 90!''31 .10 <br /> l lrhhunc , 1-,- '7110 1 <br /> QA/QC Report <br /> Method: 8260B <br /> Matrix: Water <br /> Date Analyzed: 11/20/07 <br /> Date Extracted: 11/20/07 <br /> Perimeters Cone. u /L Spike Recove %WLimits Limits RPDMS MSD Added MS MSRPD1,1-Dichloroethene 46 44 50 92 8820 4Benzene 48 48 50 96 9620 0Trichloroethene 51 49 50 102 9820 4Toluene 52 50 50 104 1020 4Chlorobenzene 47 45 50 94 9020 4m, -Xylenes 98 93 100 98 9320 5 <br /> MS: Matrix Spike <br /> MSD: Matrix Spike Duplicate <br /> RPD: Relative Percent Difference of MS and MSD <br /> Perimeters Method Units Det. <br /> Blank Limit <br /> 1,1-Dichloroethene ND ug/L 1 <br /> Benzene ND u IL 0.5 <br /> Trichloroethene ND u /L 0.5 <br /> Toluene ND u /L 0.5 <br /> Chlorobenzene ND u /L 0.5 <br /> m,p-X. lenes ND u /L 0.6 <br /> MTBE ND ug/L 1 <br /> TBA ND u /L 10 <br /> DIPE ND ug/L 1 <br /> ETBE ND u /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 /> Eth (benzene ND u /LI 0.5 <br /> o-X Iene ND ug/L 0.6 <br /> TCE ND u /L 1 <br /> PCE ND u /L 1 1 <br /> TOTALLY I)LDWAI ED "1-O ( 1 '`;'I OMI..R SATISFACTION <br />