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cbCurtis&Tompkins,Ltd. <br /> , Batch QC Report <br /> Purgeable Organics by GC/MS <br /> Lab It: 227030 Location: DVI-Burn Pit <br /> Client: URS Corporation Prep: EPA 50303 <br /> ' Project#: DVI-BP Analysis: EPA 8260B <br /> Matrix: Water Batch#: 173459 <br /> Units: ug/L Analyzed: 04/06/11 <br /> Diln Fac: 1.000 <br /> Type: BS Lab ID: QC586493 <br /> . Analyte Spiked Result %REC Limits <br /> 1,1-Dichloroethene 25.00 22. 62 90 65-138 <br /> Benzene 25.00 26. 85 107 80-124 <br /> Trichloroethene 25.00 26.06 104 78-122 <br /> Toluene 25.00 25.77 103 80-120 <br /> Chlorobenzene 25.00 26.78 107 80-120 <br /> Surrogate %REC Limits - <br /> Dibromofluoromethane 94 80-125 <br /> 1,2-Dichloroethane-d4 94 71-146 <br /> Toluene-d8 98 80-120 <br /> Bromofluorobenzene 89 80-120 <br /> Type: BSD Lab ID: QC586494 <br /> Analyte Spiked Result %REC Limits RPD Lim <br /> 1, 1-Dichloroethene 25.00 20.55 82 65-138 10 20 <br /> Benzene 25.00 25.32 101 80-124 6 20 <br /> Trichloroethene 25.00 24.19 97 78-122 7 20 <br /> Toluene 25.00 24.45 98 80-120 5 20 <br /> Chlorobenzene 25.00 25.79 103 80-120 4 20 <br /> Surrogate %REC Limits <br /> Dibromofluoromethane 94 80-125 <br /> 1, 2-Dichloroethane-d4 93 71-146 <br /> Toluene-d8 99 80-120 <br /> Bromofluorobenzene 88 80-120 <br /> r <br /> RPD= Relative Percent Difference <br /> Page 1 of 1 23.0 <br /> 23 of 69 <br />