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IT Corp Project 7-Eleven#21756 <br /> 4005 Port Chicago Hwy Project Number 781723 Reported <br /> ' Concord CA,94520 Project Manager Shelby Lathrop 419/02 <br /> Volatile Organic Compounds by EPA Method 8260B - Quality Control <br /> SunStar Laboratories,Inc. <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 2040901 -EPA 5030 Soil MS <br /> Matrix Spike(2040901-MS1) Source T200247-01 Prepared&Analyzed 04/08/02 <br /> ' Benzene 189 5 0 ug/kg 250 ND 75 6 75-125 <br /> Chlorobenzene 210 5 0 " 250 ND 84 0 75-125 <br /> 1,1-Dichloroethene 215 5 0 " 250 ND 860 75-125 <br /> Toluene 198 50 " 250 ND 792 75-125 <br /> Trichloroethene 213 5 0 250 ND 852 75-125 <br /> Surrogate Toluene-d8 94 4 100 94 4 81-117 <br /> Surrogate 4-Bromofluorobenzene 918 100 918 74-121 <br /> Surrogate DibromofluorDmethane 946 100 94 6 80-120 <br /> Matrix Spike Dup(2040901-MSD1) Source T200247-01 Prepared&Analyzed 04/08/02 <br /> ' Benzene 193 5 0 ug/kg 250 ND 77 2 75-125 209 20 <br /> Chlorobenzene 213 5 0 " 250 ND 852 75-125 142 20 <br /> 1,1-Dichloroethene 216 50 " 250 ND 864 75-125 0464 20 <br /> Toluene 197 5 0 " 250 ND 788 75-125 0 506 20 <br /> Tnchloroethene 212 5 0 250 ND 948 75-125 0 471 20 <br /> i <br /> Surrogate Toluene-d8 93 4 100 93 4 81-117 <br /> Surrogate 4-Bromofluorobenzene 916 100 916 74-121 <br /> ' Surrogate Dibromofluoromethane 102 100 102 80-120 <br /> i <br /> j . SunStar Laboratories, Inc The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document This analytical report must be reproduced in its entirety <br /> Leah Beauchame,Project Manager Page I 1 of 13 <br />