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404 N Wlget Lane <br /> Sequoia Walnut Creek CA 94598 <br /> 4(D (925)988-9600 <br /> FAX{925}988-9673 <br /> Analytical www seqUolalabs <br /> Gettler Ryan,Inc -Dublin Project Chevron <br /> 6747 Sierra Court Suite J Project Number Chevron# 9-8264 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 29-Dec-00 08 15 <br /> Volatile Organic Compounds by EPA Method 8010B - Quality Control <br /> Sequoia Analytical - Walnut Creek <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Lunits RPD Limit Notes <br /> Batch OL19005-EPA 5030B [PIT] <br /> Blank(OL19005-BLK3) Prepared&Analyzed 19-Dec-00 <br /> Chloromethane ND 20 ug/l <br /> Vinyl chlonde ND 1 0 " <br /> Bromomethane ND 20 <br /> Chloroethane ND 10 " <br /> Trichlorofluoromethane ND 10 " <br /> Freon 113 ND 1 0 <br /> 1,1-Dcchloroethene ND 10 " <br /> Methylene chlonde ND 10 " <br /> trans-l,2-Drchloroethene ND 10 " <br /> l,1-Dichloroethane ND 1 0 " <br /> cts-1,2-Dichloroethenc ND 10 <br /> Chloroform ND 10 " <br /> 1,1,1-Thchloroethane ND 10 <br /> Carbon tetrachlonde ND 10 " <br /> 1,2-Dichloroethane ND 20 " <br /> Trichloroethene ND 20 " <br /> 1,2-Dichloropropane ND 10 " <br /> Bromodrehloromethane ND 10 <br /> cu-1,3-Dichloropropene ND 10 " <br /> trans-l,3-Drchloropropene ND 10 " <br /> 1,1,2-Tnchloroethane ND 050 " <br /> Tetrachloroethene ND 10 " <br /> Drbromochloromethane ND 050 " <br /> 12-Dnbromoethane ND 10 " <br /> Chlorobenzene ND 10 " <br /> Bromofonn ND 050 " <br /> 1,2,3-Tnchloropropane ND 0 50 " <br /> 1,1,2,2-Tetrachloroethane ND 10 " <br /> 1,3-Dichlorobenzene ND 050 " <br /> 14-Dichlorobenzene ND 20 " <br /> 1,2-Dichlorobenzene ND 20 <br /> Surrogate Dibramo*luorvmethane 810 100 8.10 50-150 <br /> Surrogate 4-Bromofluorobenzene 730 100 730 50-150 <br /> Sequoia Analytical-Walnut Creek The results in this report apply to the samples analyzed in accordance with the chain <br /> custody document Tlas analytical repon must be reproduced to its ental" <br /> Page 14 of 22 <br />