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f� <br /> Corp Project 7-Eleven#17334 <br /> 005 Port Chicago Hwy Project Number 779950 Reported <br /> Concord CA,94520 Project Manager Kim Metez 04/19/02 15 17 <br /> Volatile Organic Compounds by EPA Method 8260B-Quality Control <br /> SunStar Laboratories, Inc. <br /> r Reporting Spike Source %REC RPD <br /> Analyte Result Limit Chits Level Result %REC Limits RPD Limit Notes <br /> ' Batch 2040901 -EPA 5030 Sod MS <br /> Matrix Spike Dup(2040901-MSD1) Source T200247-01 Prepared&Analyzed 04/08/02 <br />' Benzene 193 5 0 ug/kg 250 ND 772 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-I25 0464 20 <br />' Toluene 197 5 0 250 ND 78 8 75-125 0 506 20 <br /> Trichloroethene 212 5 0 250 ND 848 75-125 0 471 20 <br /> Surrogate Toluene-d8 934 100 934 81-117 <br /> Surrogate 4-Bromofluorobenzene 916 100 916 74-121 <br />' Surrogate Drbromofluoromethane 101 100 101 80-110 <br /> Batch 2040902-EPA 5030 Water MS <br /> Blank(2040902-BLK1) Prepared&Analyzed 04/08/02 <br /> Benzene ND 50 ug/l <br /> Bromobenzene ND 5 0 " <br /> Bromochloromethane ND 5 0 " <br /> modichloromethane ND 50 *' <br /> ftmoform ND 50 <br /> Bromomethane ND 50 <br /> n-Butylbenzene ND 50 " <br /> sec-Butylbenzene ND 50 " <br /> tert-Butylbenzene ND 5 0 <br /> Carbon tetrachloride ND 50 " <br />' Chlorobenzene ND 5 0 <br /> Chloroethane ND 5 0 <br /> Chloroform ND 50 " <br /> Chloromethane ND 50 " <br /> 2-Chlorotoluene ND 5 0 11 <br /> 4-Chlowtoluene ND 5 0 <br /> Dibromochloromethane ND 50 " <br /> 1,2-Dibromo-3-chloropropane ND 50 " <br /> 1,2-Dibromoethane(EDB) ND 5 0 <br /> Dibromomethane ND 50 " <br /> 1,2-Dichlorobenzene ND 5 0 " <br /> 1,3-Dichlorobenzene ND 50 " <br /> 1,4-Dichlorobenzene ND 5 0 <br /> Dichlorodifluoromethane ND 5 0 " <br />' 1,1-achloroethane ND 50 " <br /> 1,2-Dichloroethane ND 5 0 " <br /> 1,1-Dichloroethene ND 5 0 " <br /> cis-1,2-Dichloroethene ND 50 " <br />' trans-l,2-Dichloroethene ND 5 0 <br /> Star Laboratones,Inc The results to this report apply to the samples analyzed in accordance with the chain of <br /> custody document Thus analytical report must be reproduced in its entirety <br />' Jo heeler,Laboratory Director Page 13 of 17 <br />