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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364 9233 <br /> 404 N Wiget lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-%73 <br /> Analytical 819 Striker Avenue Suite a 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 /> r <br />' Pacific Environmental Group-Sac Project Unocal 0123,Tracy,CA Sampled 10/6198 <br /> 11315 Sunrise Gold Circle St M Project Number 910-017 1 Received 10/7/98 <br /> Rancho Cordova,CA 95742 Project Manager Mike Mitchener Reported 10/16/98 <br /> Volatile Organic Compounds by EPA Method 8010B <br /> Sequoia Analytical-Sacramento <br />' Batch Date Date Surrogate Reporting <br /> Analyte Number Pre ared Analyzed Limits Limit Result Units Notes* <br />' BB-4aS810088-01 )Yate <br /> Bromodichloromethane 8100195 10/14/98 10/14/98 0 500 ND ug/1 <br /> Bromoform 0 500 ND " <br /> Bromomethane 100 ND <br /> Carbon tetrachloride 0 500 ND " <br /> Chlorobenzene 0 500 ND " <br /> Chloroethane 100 ND " <br />' 2-Chloroethylvmyl ether " 1 00 ND <br /> Chloroform 0 500 ND <br /> Chloromethane 100 ND " <br />' DibromochIoromethane 0 500 ND " <br /> 1,3-Dichlorobenzene 11 0 500 ND " <br /> 1,4-Dichlorobenzene 0 500 ND <br /> 1,2-Dichlorobenzene 0 500 ND " <br /> D1-Dichloroethane 0 500 0 510 <br /> 2-Dichloroethane 0 500 ND " <br /> 1,1-Dichloroethene 0 500 ND " <br /> cis-1,2-Dichloroethene 0 500 1 39 " <br />' trans-1,2-Dichloroethene " 0 500 ND " <br /> 1,2-Dichloropropane 0 500 ND " <br /> ci s-1,3-Di chloropropene 0 500 ND " <br />' trans-1,3-Dichloropropene 0 500 ND " <br /> Methylene chloride 500 ND " <br /> 1,1,1,2-Tetrachloroethane 0 500 ND " <br /> Tetra chloro ethene 0 500 297 " <br />' 1,1,1-Tnchloroethane 0 500 ND <br /> 1,1,2-Trichloroethane 0 500 ND <br /> Trichloroethene 0 500 ND " <br />' Tnchlorofluoromethane 0 500 ND <br /> Vinyl chloride 1 00 ND " <br /> Surrogate Bromochloromethane 700-130 107 % <br /> Surrogate 2-Chlorololuene 7011-130 740 <br /> Sequoia Analytical-Sacramento *Refer to end of report for text of notes and definitions <br /> G%NE���G G <br /> oda C Schneider, aboratory Director Page 5 of 13 <br />