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' cb Curtis &Tompkins.Ltd. <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#: 174342 <br /> Units: ug/L Analyzed: 05/03/11 <br /> Diln Fac: 1.000 <br /> Type: BS Lab ID: QC589988 <br /> Analyte Spiked Result %REC Limited <br /> 1, 1-Dichloroethene 25.00 25.69 103 65-138 <br /> ' Benzene 25.00 26.82 107 80-124 <br /> Trichloroethene 25.00 25.79 103 78-122 <br /> Toluene 25.00 25.49 102 80-120 <br /> Chlorobenzene 25.00 24.51 98 80-120 <br /> Surrogate %REC Limits <br /> Dibromofluoromethane 112 80-125 <br /> 1,2-Dichloroethane-d4 124 71-146 <br /> Toluene-d8 102 80-120 <br /> Bromofluorobenzene 92 80-120 <br /> ' Type: BSD Lab ID: QC589989 <br /> Analyte. Spiked Result %REC Limits RPD Lim <br /> 1, 1-Dichloroethene 24.75 23 . 17 94 65-13B 9 20 <br /> Benzene 24.75 26.31 106 80-124 1 20 <br /> ' Trichloroethene 24.75 25.40 103 78-122 1 20 <br /> Toluene 24.75 25.33 102 80-120 0 20 <br /> Chlorobenzene 24.75 24.34 98 80-120 0 20 <br /> ' Surrogate: . %REC. Limits <br /> Dibromofluoromethane 110 80-125 <br /> 1,2-Dichloroethane-d4 120 71-146 <br /> Toluene-d8 103 80-120 <br /> tBromofluorobenzene 93 80-120 <br /> RPD= Relative Percent Difference <br /> Page 1 of 1 =o.o <br /> 22 of 47 <br />