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+ 680 Chesapeake Drive Redwood City CA 94063 (650)364-%00 FAX(650)364-9233 <br /> Sequoia 404 N Wiget Lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988 9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma,CA 94954 707 792-1865 FAX(707)792-0342 <br /> • <br /> Blaine Technical Services,Inc Project Shell Oil Co Sampled 1/26/99 <br /> 1680 Rogers Ave Project Number 141 N El Dorado,Stockton/990126-52 Received 2/2/99 <br /> San Jose,CA 95112 Project Manager Fran Thie Reported 2/12/99 <br /> Volatile Organic Compounds by EPA Method 8010B/Quality Control <br /> Sequoia Analytical-Petaluma <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Batch 9020100 Date Prepared _2/3/99 Extraction Method EPA 5030 waters <br /> Blank 9020100-BLKI <br /> Bromodichloromethane 2/3/99 ND ug/l 0 500 <br /> Bromoform ND 0 500 <br /> Bromomethane ND 0 500 <br /> Carbon tetrachloride ND 0 500 <br /> Chlorobenzene ND 0 500 <br /> Chloroethane ND 0 500 <br /> 2-Chloroethylvinyl ether ND 500 <br /> Chloroform ND 0 500 <br /> Chloromethane ND 0 500 <br /> Dibromochloromethane ND 0 500 <br /> 1,2-Dlbromoethane(EDB) ND 0 500 <br /> 1,2-Dichlorobenzene ND 0 500 <br /> isichlorobenzene ND 0 500 <br /> ichlorobenzene ND 0 500 <br /> Dichlorodifluoromethane ND 0 500 <br /> I,I-Dichloroethane ND 0 500 <br /> I,2-Dichloroethane ND 0 500 <br /> I,1-Dichloroethene ND 0 500 <br /> cis-1,2-Dichloroethene ND 0 500 <br /> trans-1,2-Dichloroethene ND 0 500 <br /> 1,2-Dichloropropane ND 0 500 <br /> cis-1,3-Dichloropropene ND 0 500 <br /> trans-l,3-Dichloropropene ND 0 500 <br /> Freon 113 ND 0 500 <br /> Methylene chloride ND 0 500 <br /> 1,1,2,2-Tetrachloroethane ND 0 500 <br /> Tetrachloroethene ND 0 500 <br /> 1,1,2-Tnchloroethane ND 0 500 <br /> 1,1,1-Tnchloroethane ND 0 500 <br /> Trichloroethene ND 0 500 <br /> Tnchlorofluoromethane ND 0 500 <br /> Vinyl chlonde ND 0 500 <br /> Surrogate Bromochloromethane 300 324 108 <br /> Surrogate 1 4-Dichlorobutane 300 313 104 <br /> Blank 9020100-BLK3 <br /> Bromodichloromethane 2/5/99 ND ug/1 0 500 <br /> Bromoform ND 110 500 <br /> Bromomethane ND 0 500 <br /> 0 n tetrachloride ND 0 500 <br /> Sequoia Analytical-Petaluma *Refer to end of report for text of notes and definitions <br /> Page 7 of 10 <br />