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Alpha Scientific Corporation <br /> Environmental Laboratories <br /> 12-06-2007 <br /> EPA 8260B <br /> Batch QA/QC Report <br /> Client: Environmental Applications Lab Job No.: Q712016 <br /> Project: 0710-01 <br /> Matrix: Soil Lab Sample ID: Q712016-13 <br /> Batch No: 1206-VOBS I Date Analyzed: 12-06-2007 <br /> I.MS/MSD Report <br /> Unit:ppb <br /> Analyte Sample Spike MS MSD MS MSD %RPD %RPD %Rec <br /> Conc. Conc. %Rec. %Rec. Accept. Accept. <br /> Limit Limit <br /> 1,1- ND 20 20.7 20.6 103.5 103.0 0.5 30 70-130 <br /> Dichloroethene <br /> Benzene ND 1 20 19.6 20.7 98.0 103.5 5.5 30 70-130 <br /> Trichloro- ND 20 19.4 20.9 97.0 104.5 7.4 30 70-130 <br /> ethene <br /> Toluene ND 20 20.1 20.3 100.5 101.5 1.0 30 70-130 <br /> IChlorobenzenel ND 20 19.7 19.2 98.5 96.0 2.6 30 70-130 <br /> II.LCS Result <br /> Unit: ppb <br /> Analyte LCS Value True Value Rec.% Accept. Limit <br /> 1,1-Dichloroethene 50.1 50.0 100.2 80-120 <br /> Benzene 50.2 50.0 100.4 80-120 <br /> Trichloro-ethene 52.8 50.0 105.6 80-120 <br /> Toluene 51.2 50.0 102.4 80-120 <br /> Chlorobenzene 50.0 50.0 1 100.0 80-120 <br /> ND: Not Detected. <br /> 16760 Gridley Road,Cerritos,CA 90703 15 Phone:(562)809-8880 Fax:(562)809-8801 <br />