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CbCurtis&Tompkins.Ltd. <br /> Batch QC Report , <br /> Purgeable Organics by GC/MS <br /> Lab #: 225721 Lunation: Newark Sierra Stockton <br /> Client: GeoSyntec Consultants Prep: EPA 5035 <br /> Project#: WR1194 Analysis: EPA 8260B , <br /> Matrix: Soil Batch#: 171524 <br /> Units: ug/Kg Analyzed: 02/04/11 <br /> Diln Fac: 1.000 <br /> Type: BS Lab ID: QC578759 <br /> Analyte Spiked Result %REC Limits <br /> 1, 1-Dichloroethene 25.00 25.07 100 68-134 <br /> Benzene 25.00 23.11 92 80-128 <br /> Trichloroethene 25.00 23.09 92 75-130 <br /> Toluene 25.00 25.18 101 80-130 <br /> Chlorobenzene 25.00 26.10 104 80-126 ' <br /> Surrogate %REC Limits <br /> Dibromofluoromethane 94 79-120 <br /> 1,2-Dichloroethane-d4 110 72-148 <br /> Toluene-d8 111 80-120 <br /> Bromofluorobenzene 94 78-130 <br /> Type: BSD Lab ID: QC578760 <br /> Analyte Spiked Result %REC Limits RPD Lim <br /> 1, 1-Dichloroethene 25.00 24.27 97 68-134 3 27 <br /> Benzene 25.00 22.70 91 80-128 2 20 <br /> Trichloroethene 25.00 22.37 89 75-130 3 20 <br /> Toluene 25.00 24.60 98 80-130 2 20 <br /> Chlorobenzene 25.00 25. 17 101 80-126 4 20 <br /> Surrogate %REC Limits ' <br /> Dibromo£luoromethane 92 79-120 <br /> 1,2-Dichloroethane-d4 109 72-148 <br /> Toluene-d8 111 80-120 <br /> Bromofluorobenzene 92 78-130 <br /> RPD= Relative Percent Difference <br /> Page 1 of 1 ]3.0 <br /> 36 of 47 <br />