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cbCurtis&Tompkins.Lid. <br /> Batch QC Report <br /> Purgeable Organics by GC/MS ' <br /> Lab #: 227645 Location: DVI-Burn Pit <br /> Client: URS Corporation Prep: EPA 5030B <br /> Project#: DVI-BP Analysis: EPA 8260B <br /> Matrix: Water Batch#: 174297 <br /> Units: ug/L Analyzed: 05/02/11 <br /> Diln Fac: 1.000 <br /> Type: BS Lab ID: QC589822 <br /> Analyte. Spiked Result %REC Limits <br /> 1, 1-Dichloroethene 25.00 24 .30 97 65-138 <br /> Benzene 25.00 26.64 107 80-124 <br /> Trichloroethene 25.00 25.55 102 78-122 <br /> Toluene 25.00 25.92 104 80-120 <br /> Chlorobenzene 25.00 24.96 100 60-120 1 <br /> Surrogate %REC Limits <br /> Dibromofluoromethane 108 80-125 <br /> 1,2-Dichloroethane-d4 119 71-146 _ <br /> Toluene-d8 103 80-120 <br /> Bromofluorobenzene 92 80-120 <br /> 1 <br /> Type: BSD Lab ID: QC589823 <br /> '. Analyte Spiked Result %REC Limits RPD Lim <br /> 1,1-Dichloroethene 24.75 24.56 99 65-138 2 20 <br /> Benzene 24.75 26.94 109 80-124 2 20 <br /> Trichloroethene 24.75 25.91 105 78-122 2 20 <br /> Toluene 24.75 26.18 106 80-120 2 20 <br /> Chlorobenzene 24.75 25.04 101 80-120 1 20 <br /> Surrogate %REC Limits ' <br /> Dibromofluoromethane 107 80-125 <br /> 1,2-Dichloroethane-d4 116 71-146 <br /> Toluene-d8 102 80-120 <br /> Bromofluorobenzene 93 80-120 <br /> RPD= Relative Percent Difference <br /> Page 1 of 1 <br /> 18.0 <br /> 19 of 47 <br />