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' Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9Z33 <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)9 21-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br />' Pacific Environmental Group-Sac Project Unocal 0123,Tracy,CA Sampled 10/22/98 <br /> l 1315 Sunrise Gold Circle St M Project Number 910-017 IA Received 10/22/98 <br />' Rancho Cordova,CA 95742 Project Manager Mike Mitchener Reported 10/30/98 <br /> Total Purgeable Hydrocarbons(C6-C12),BTEX and MTBE by DHS LUFT <br /> Sequoia Analytical-Sacramento <br /> Batch Date Date Surrogate Reporting <br /> Analyte Number Prepared Analyzed Limits Limit Result Units Notes* <br />' U__5 5810250-01 Water <br /> Purgeable Hydrocarbons 8100282 10/26/98 10/26/98 50 0 ND ug/I <br /> Benzene 0 500 ND " <br />' Toluene 0 500 ND <br /> Ethylbenzene 0 500 ND " <br /> Xylenes(total) 0 500 ND " <br /> Methyl tert-butyl ether 500 ND " <br />' Surrogate a a,a-Trifluorotoluene " 600-140 102 % <br /> IL-5 5810250-02 Wate <br /> Purgeable Hydrocarbons 8100282 10/26/98 10/26/98 500 968 ug/l 1 <br />' Benzene " " 0 500 ND <br /> Toluene 0 500 300 <br /> Ethylbenzene 0 500 171 " <br /> ylenes(total) 0 500 3 76 " <br /> ethyl tert-butyl ether 500 ND " <br /> Surrogate a a a-Trifluorotoluene 600-140 965 % <br /> 1 <br /> 1 <br /> 1 <br /> 1 <br /> equoia Analytical-Sacramento *Refer to end of report for text of notes and def nitions <br /> zzelzj"'�11' ' <br /> nda C Schneider,Laboratory Director Page 2 of 12 <br />