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I <br /> l ( Alpha Scientific Corporation <br /> Environmental Laboratories <br /> 10-06-2006 <br /> l EPA Method 8260B <br /> Batch QA/QC Report <br /> Client: Biophysics Environmental Assessment Lab Job No: BE609158 <br /> Project: Frontier Trucking/Tracy <br /> Matrix: Water Lab Sample ID: BE609158- 13 <br /> Batch No : 1002-VOEWI Date Analyzed : 10-02-2006 <br /> 1. MS/MSD Report <br /> Unit b <br /> Analyte Sample Spike MS MSD MS MSD % RPD %RPD %Rec <br /> Conc. Conc. %Rec. %Rec. Accept. Accept. <br /> I Limit Limit <br /> 1 , 1 - ND 20 17.9 16,8 89.5 84.0 6.3 30 70- 130 <br /> Dichloroethene <br /> i <br /> Benzene ND 20 1 20.8 19.0 1 104.0 95 .0 9.0 30 70- 130 <br /> Trichloro- ND 20 21 .6 203 108.0 101 .5 6.2 30 70- 130 <br /> ethene <br /> J Toluene ND 20 22.6 21 .2 113 .0 106.0 6.4 30 70- 130 <br /> Chlorobenzene ND 20 21 .3 20.5 106.5 102.5 3 .8 30 70- 130 <br /> H. LCS Result <br /> Unit: ppb <br /> Analyte LCS Value True Value Rec.% Accept. Limit <br /> 1 1 , 1 -Dichloroethene 50.2 50.0 100.4 80- 120 <br /> _ Benzene 51 .3 50.0 102.6 80420 <br /> Trichloro-ethene 56. 1 50.0 112.2 80- 120 <br /> Toluene 54.6 50.0 109.2 80-120 <br /> lChlorobenzene 1 55 .7 1 50.0 111 .4 80-120 <br /> i <br /> ND: Not Detected. <br /> - - 16760 Gridley Road, Cenfitos, CA 90703 11 Phone: ( 562) 809-8880 Fax: (562) 809-8801 <br />