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Alpha Scientific Corporation <br /> Igo Environmental Laboratories <br /> C <br /> 10-04-2006 <br /> EPA Method 8260B f <br /> Batch QA/QC Report <br /> Client: Biophysics Environmental Assessment Lab Job No: BE609137 <br /> Project: Frontier <br /> Matrix: Soil Lab Sample ID: R609135- 1 <br /> Batch No: 0927-VOES1 Date Analyzed: 09-28-2006 <br /> 1, MSIMSD Report <br /> Unit: ppb <br /> Analyte Sample Spike MS MSD MS MSD % RPD %RPD %Rec <br /> Conc. Cones %Rec. %Rec. Accept. Accept. <br /> Limit Limit <br /> 1 , 1 - ND 20 21 .2 19.5 106.0 97.5 8.4 30 70- 130 <br /> Dichloroethene <br /> Benzene ND 20 1 20.8 21 .5 1 104.0 107.5 1 3 .3 30 1 70- 130 <br /> Trichloro- ND 20 22,6 22.9 113 .0 114.5 1 .3 30 70- 130 <br /> ethene <br /> Toluene ND 20 22.6 23 .2 113 .0 116.0 2.6 30 70430 <br /> Chlorobenzene ND 20 21 .6 23 .0 108.0 115.0 6.3 30 70- 130 <br /> I1. LCS Result <br /> Unit: ppb <br /> Analyte LCS Report Value True Value Rec.% Accept. Limit <br /> 1 , 1 -Dichloroethene 17.2 20 86:0 80- 120 <br /> Benzene 20.4 20 102.0 80- 120 <br /> Trichloro-ethene 20.0 20 100.0 80- 120 <br /> Toluene 22.2 20 111 .0 80- 120 <br /> Chlorobenzene 21 .4 20 107.0 80- 120 <br /> ND: Not Detected (at the specified limit) <br /> 16760 Gridley Road, Cerritos, CA 90703 5 Phone: (562) 809-8880 Fax: (562) 809-8801 <br />