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cbCurtis &Tompkins.Ltd. <br /> s <br /> Batch QC Report <br /> F Curtis b Tompkins Laboratories Analytical Report <br /> # Lab #: 211070 Location: Valero <br /> Client: Technical Studies, Inc. Prep: EPA 5030E <br /> Project#: STANDARD Analysis: EPA 8015B <br /> Matrix: Soil Diln Fac: 1.000 <br /> Units: mg/Kg Batch#: 149692 <br /> Basis: as received Analyzed: 04/07./09 <br /> Type: BS Lab ID: QC49OB35 <br /> Analyte SpikedResult %REC Limits <br /> " Gasoline C7-C12 5.000 4 .789 96 77-120 <br /> Surrogate %REC Limits <br /> " Trifluorotoluene (FID) 127 54-•152 <br /> Bromofluorobenzene (FID) 109 50-152 <br /> Type: BSD Lab ID: QC490636 <br /> ' Analyte Spiked Result %REC Limits -RPD Lim <br /> Gasoline C7-C12 10.00 8.719 87 77-120 9 21 <br /> Surrogate %REC Limits <br /> Trifluorotoluene (FID) 126 54-152 <br /> Bromofluorobenzene (FID) 113 50-152 <br /> j <br /> I <br /> i <br /> �I <br /> RPD= Relative Percent Difference <br /> Page 1 of 1 19 1 <br />