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cbCurtis&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 /> Project#: WR1194 Analysis: EPA 8260B <br /> Matrix: Soil Batch#: 171520 <br /> Units: ug/Kg Analyzed: 02/04/11 <br /> Diln Fac: 1.000 <br /> Type: BS Lab ID: QC578743 <br /> Analyte Spiked Result %REC Limits <br /> 1, 1-Dichloroethene 20.00 22 .70 114 68-134 <br /> Benzene 20.00 21.63 108 80-128 <br /> Trichloroethene 20.00 21.26 106 75-130 <br /> Toluene 20.00 20.80 104 80-130 <br /> Chlorobenzene 20.00 20.94 105 80-126 <br /> Surrogate %REC Limits <br /> Dibromofluoromethane -7 79-120 <br /> ' 1,2-Dichloroethane-d4 66 72-148 <br /> Toluene-d8 100 80-120 <br /> Bromofluorobenzene 96 78-130 <br /> Type: BSD Lab ID: QC578744 <br /> Analyte Spiked Result %REC Limits RPD Lim <br /> 1,1-Dichloroethene 20.00 24. 15 121 68-134 6 27 <br /> Benzene 20.00 20.78 104 80-128 4 20 <br /> Trichloroethene 20.00 20.45 102 75-130 4 20 <br /> Toluene 20.00 20.44 102 80-130 2 20 <br /> Chlorobenzene 20.00 20.50 103 80-126 2 20 <br /> Surrogate %REC Limits <br /> Dibromofluoromethane 101 79-120 <br /> 1,2-Dichloroethane-d4 86 72-148 <br /> Toluene-d8 97 80-120 <br /> Bromofluorobenzene 99 78-130 <br /> RPD= Relative Percent Difference <br /> Page 1 of 1 <br /> 33 of 47 <br />