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Sequoia 680 Chesapeake Drove 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 /> 4 a— ) Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> mqW 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)792-0342 <br /> Project Unocal/Tosco Sampled 2/1199 to 212199 <br /> Digital Dr Suite 6 Project Number 227903IUnacal 5098 Received 2/3/99 <br /> Novato,CA 94949 Project Mana er Mark Dockum R m2rted 2118199 <br /> tmple Description S-70-B1 <br /> boratory Sample Number: P902106-24 <br /> Batch Date Date Specific Method/ Reporting <br /> alyte Number Prepared Analyzed Surrogate Li ruts Limit Result Units Notes' <br /> Se4noia Analvdcal-Petaluma <br /> tal Petroleum Hvdrocarbons as Gasoline and BTEX by EPA 8015M/8020M <br /> ohne 9020316 2/12/99 2113/99 0 400 ND mg/kg <br /> Benzene 000200 00217 " <br /> Wlucnc H 000200 ND <br /> hylbenzene 000200 00112 <br /> Xylenes(total) 000400 000906 " <br /> rrogate a a a-Trifluorotoluene " - 983 % <br /> rrogate 4-Bromofluorobenzene 82 0 " <br /> I <br /> I <br /> is Analytical-Petaluma 'Refer to end of report for text of notes and definitions <br /> Page 13 of 24 <br />