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Sequoia 400 Chesapeake Drive Redwood ClA 94063 (650)354-9600 FAX(650)364-9233 <br /> 1a) 404 N Wiget tare Walnut Creek.k.U 94598 (925)988-9500 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento U 95834 (916)92t-9600 FAX(916)921-0100 <br /> i„W Analytical 1455 McDowell Blvd North Ste D Petaluma,U 94954 (707)792-1865 FAX(707)792-0342 <br /> Project Unocal/Tosco Sampled 211199 to 212/99 <br /> rMtaR:IDr Suite 6 Project Number 227903/Unocal5098 Received 213/99 <br /> ao94949 Pro ect Mana er Mark Dockum Re rted 2/18/99 <br /> mple Description- S-50-B1 <br /> aboratory Sample Number. P902106-10 <br /> Batch Date Date Specific Method/ Reporting <br /> alyte Number Prepared Analyzed Surrogate Limits Lenut Result Units Notes* <br /> Sequoia Analytical-Petaluma <br /> tal Petroleum Hydrocarbons as Gasolene and BTEX by EPA 8015M/8020M <br /> asohne 9020316 2/12/99 2112199 1 00 200 mg/kg <br /> Benzene 000500 ND " <br /> tluene 000500 ND " <br /> hylb nzene 000500 ND " <br /> ylenes(total) 00100 ND " <br /> Surrogate a a a-Trifluorotoluene - 953 <br /> rmgate 4-Bromofluorobenzene - 970 " <br /> fpia Analytical-Petaluma "Refer to end of report for text of notes and definitions <br /> Page 4 of 24 <br /> � I <br />