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1 <br /> Sequoia (i80 L..-sapeake 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 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) 79 2-1865 FAX(707) 792-0342 <br /> Pacific Environmental Group-Sac Project Unocal 0123,Tracy,CA Sampled 10/6/98 <br /> 113 15 Sunrise Gold Circle St M Project Number 910-017 1A Received 10/7198 <br /> Rancho Cordova,CA 95742 Pra ect Manager Mike Mitchener Reported 10/20/98 <br /> Volatile Organic Compounds by EPA Method 801013 <br /> Sequoia Analytical-Sacramento <br /> Batch Date Date Surrogate Reporting <br /> Analyte Number Prepared Analyzed Limits Limit Result Units Notes* <br /> BA Q 10' 5810080-01 SAW <br /> Bromodichloromethane 8100176 10/14/98 10/14/98 500 ND ug/kg <br /> Bromoform 500 ND " <br /> Bromomethane 100 ND " <br /> Carbon tetrachloride 500 ND " <br /> Chlorobenzene 500 ND " <br /> Chloroethane 100 ND " <br />' 2-ChloroethyIvinyl ether 100 ND <br /> Chloroform <br /> 500 ND <br /> Chloromethane 100 ND " <br /> DibrornochlorOmethane 500 ND " <br /> 1,3-Dichlorobenzene 500 ND <br /> 1,4-Dichlorobenzene 500 ND " <br /> 1,2-Dichlorobenzene 500 ND " <br /> DI-Dichloroethane " 500 ND " <br /> 2-Dichloroethane 500 ND <br /> 1,1-Dichloroethene 500 ND " <br /> cis-1,2-Dichloroethene 500 ND <br /> trans-1,2-Dichloroethene 500 ND <br /> 1,2-Dichloropropane 500 ND <br /> cis-1,3-Dichloropropene 500 ND " <br /> trans-l,3-Diehl oropropene 500 ND " <br /> Methylene chlonde 500 ND " <br /> 1,1,2,2-Tetrachloroethane 500 ND <br /> Tetrachloroethene 500 ND " <br />' 1,1,l-Tnchloroethane " 500 ND <br /> 1,1,2-Tnchloroethane 500 ND " <br /> Trichloroethene Soo ND " <br /> Trichlorofluoromethane 500 ND " <br /> Vinyl chloride 100 ND " <br /> Surrogate Bromochloromethane " 600-140 110 % <br /> Surrogate 2-Chlorololuene 600-140 860 <br /> 1 <br /> Sequoia Analytical-Sacramento *Refer to end of report for text of notes and definitions <br /> nda C Schnei er, Laboratory Director Page 7 of 16 <br />