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1 � <br /> IT Corp Project 7-Eleven#21756 <br /> 4005 Port Chicago Hwy Project Number 781723 Reported <br /> Concord CA,94520 Project Manager Shelby Lathrop 416102 <br /> Volatile Organic Compounds by EPA Method 8260B - Quality Control <br /> ' SunStar Laboratories, Inc. <br /> Reporting Spike Source %RFC RPD <br /> ' Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 2040403-EPA 5030 Soil MS <br /> Matrix Spike(2040403-MSI) Source T200236-02 Prepared&Analyzed 04/03/02 <br /> Benzene 196 5 0 ug/kg 250 ND 784 75-125 <br /> Chlorobenzene 220 50 250 ND 880 75-125 <br /> 1,1 Dichloroethene 218 50 250 ND 872 75-125 <br /> Toluene 201 50 „ 250 ND 804 75-125 <br /> Trichloroethene 219 50 250 ND 876 75-125 <br /> Surrogate Toluene-d8 943 100 943 81-117 <br /> ' Surrogate 4-Bromofluorobenzene 939 100 939 74-121 <br /> Surrogate Dibromofluoromethane 104 100 104 80-120 <br /> Matrix Spike Dup(2040403-MSD1) Source T200236-02 Prepared&Analyzed 04/03/02 <br /> I Benzene 194 5 0 ug/kg 250 ND 77 6 75-125 1 03 20 <br /> Chlorobenzene 216 5 0 250 ND 964 75-125 1 83 20 <br /> 1,1-Dichloroethene 212 5 0 250 ND 84 8 75-125 279 20 <br /> Toluene 190 5 0 i 250 ND 760 75-125 5 63 20 <br /> Trichloroethene 207 5 0 250 ND 82 8 75-125 5 63 20 <br /> Surrogate Toluene-d8 928 100 92 8 81-117 <br /> ' Surrogate 4-Bromofluorobenzene 90 6 I, 100 90 6 74-121 <br /> Surrogate Dibromofluoromethane 100 100 100 80-120 <br /> i <br /> Batch 2040404-EPA 5030 Water MS <br /> Blank(2040404-BLK1) Prepared&Analyzed 04/03/02 <br /> Benzene ND 5 0 ug/l <br /> Bromobenzene ND 5 0 <br /> Bromochloromethane ND 5 0 <br /> Bromodichloromethane ND 5 0 <br /> Bromoform ND 5 0 " <br /> Bromomethane ND 5 0 <br /> n-Butylbenzene ND 5 0 <br /> sec-Butylbenzene ND 5 0 " <br /> ' tert Butylbenzene ND 5 0 <br /> Carbon tetrachloride ND 5 0 <br /> Chlorobenzene ND 5 0 " <br /> Chloroethane ND 50 " <br /> ' Chloroform ND 5 0 <br /> Chloromethane ND 5 0 <br /> 2-Chlorotoluene ND 5 0 " <br /> 4-Chlorotoluene ND 5 0 " <br /> 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 Beauchaine,Project Manager Page 13 of 17 <br />