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Sequoia fiSChesapeakeDrive Redwood CityCA 94 (650)364-9600 FAX(620)364-9633 <br /> 1G) 404 N Wiget LA Lane Walnut Creek.CA 9454898 (925)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (9t6)921-9600 FAX(916)921-0100 <br /> w„w Analytical 1455 McDowell Blvd North.Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> Project Unocal/Tosco Sampled 211199 to 212199 <br /> rgital Dr Suite 6 Project Number 227903/llnocal 5098 Received 2/3/99 <br /> o,CA 94949 Project Manager Mark Dockum R arced 2118199 <br /> ample Description S-30-B2 <br /> aboratory Sample Number: P902106-12 <br /> Batch Date Date Specific Method/ Reporttng <br /> al a Number Prepared Analyzed Surrogate Limits Liitut Result Units Notes* <br /> Sequoia Analytical-Petaluma <br /> atal Petroleum Hydrocarbons as Gasoline and BTEX by EPA 9015M/8020M <br /> gasoline 9020316 2112199 2/12/99 0 400 ND mg/kg <br /> Benzene 000200 ND " <br /> Tluene " 000200 ND " <br /> 11hlberizene or or or 000200 ND " <br /> ylenes(total) " 000400 ND <br /> Surrogate a a a-Trifluorotoluene - 92 0 <br /> rrogate 4-Bromofluorobenzene - 903 " <br /> oia Analytical-Petaluma *Refer to end of report for text of notes and definitions <br /> Page 5 of 24 <br />