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cbCurfis&Tompkins.Ltd. <br /> Batch QC Report <br /> Purgeable Organics by GC/MS <br /> Lab #: 225721 Location: Newark Sierra Stockton <br /> Client: GeoSyntec Consultants Prep: EPA 5035 <br /> N Project#: WR1194 Analysis: EPA 8260B <br /> Matrix: Soil Batch#: 171528 <br /> Units: ug/Kg Analyzed: 02/04/11 <br /> Diln Fac: 1.000 <br /> Type: BS Lab ID: QC578769 <br /> Analyte Spiked Result %REC Limits <br /> l,l-Dichloroethene 25.00 23.83 95 68-134 <br /> Benzene 25.00 23.87 95 80-128 <br /> Trichloroethene 25.00 23.24 93 75-130 <br /> Toluene 25.00 23.15 93 80-130 <br /> Chlorobenzene 25.00 23.70 95 80-126 <br /> Surrogate %REC Limits <br /> Dibromofluoromethane 97 79-120 <br /> 1,2-Dichloroethane-d4 98 72-148 <br /> Toluene-d8 98 80-120 <br /> Bromofluorobenzene 99 78-130 <br /> Type: BSD Lab ID: QC578770 <br /> Analyte Spiked Result %REC Limits RPD Lim <br /> 1,1-Dichloroethene 25.00 23.74 95 68-134 0 27 <br /> Benzene 25.00 24.21 97 80-128 1 20 <br /> Trichloroethene 25.00 23.35 93 75-130 0 20 <br /> Toluene 25.00 22.81 91 80-130 2 20 <br /> Chlorobenzene 25.00 23.57 94 80-126 1 20 <br /> Surrogate %REC Limits <br /> Dibromofluoromethane 95 79-120 <br /> 1,2-Dichloroethane-d4 96 72-148 <br /> Toluene-d8 98 80-120 <br /> Bromofluorobenzene 95 78-130 <br /> r <br /> RPD= Relative Percent Difference <br /> Page 1 of 1 15.0 <br /> 39 of 47 <br />