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CbCurtis &Tompkins. Ltd <br /> Batch QC Report <br /> Purgeable Organics by GC/MS <br /> Lab #: 227030 Location: DVI-Burn Pit <br /> Client: URS Corporation Prep: EPA 5030B <br /> Project#: DVI-BP Analysis: EPA 8260B , <br /> Matrix: Water Batch#: 173410 <br /> Units: ug/L Analyzed: 04/05/11 <br /> Diln Fac: 1.000 <br /> Type: BS Lab TD: QC586329 <br /> Analyte Spiked - Result %REC Limits <br /> 1, 1-Dichloroethene 25.00 27.29 109 65-138 <br /> Benzene 25.00 26.69 107 80-124 <br /> Trichloroethene 25.00 25.51 102 78-122 <br /> Toluene 25.00 27.26 109 80-120 <br /> Chlorobenzene 25.00 26.93 108 80-120 <br /> Surrogate %REC Limits <br /> Dibromofluoromethane 96 80-125 <br /> 1,2-Dichloroethane-d4 96 71-146 <br /> Toluene-d8 99 80-120 <br /> Bromofluorobenzene 99 80-120 <br /> Type: BSD Lab ID: QC586330 <br /> Analyte Spiked Result %REC Limits RPD Lim <br /> 1, 1-Dichloroethene 25.00 24.88 100 65-138 9 20 <br /> Benzene 25.00 25.52 102 80-124 4 20 <br /> Trichloroethene 25.00 24.15 97 78-122 5 20 <br /> Toluene 25.00 26.25 105 80-120 4 20 <br /> Chlorobenzene 25.00 26.19 105 80-120 3 20 <br /> Surrogate %REC Limits <br /> Dibromofluoromethane 94 80-125 <br /> 1,2-Dichloroethane-d4 95 71-146 <br /> Toluene-d8 102 80-120 - <br /> Bromofluorobenzene 97 60-120 <br /> RPD= Relative Percent Difference <br /> Page 1 of 1 i t <br /> 20 of 69 t <br />