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Sequoia 660 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N Wiget Lane Walrwt 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)911-0100 <br /> 1455 McDowell Blvd North Ste D t'etAuma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> Project Unocal/Tosco Sampled 211199 to 212199 <br /> 4 Digital Dr Suite 6 Project Number 227903/Unocal 5098 Received 213199 <br /> ovato,CA 94949 Project Manager Mark Dockum Re rted 2118/99 <br /> ample Description S-55-B1 <br /> aboratory Sample Number P902106-21 <br /> Batch Date Date Specific Method/ Reporting <br /> nalyte Number Prepared Analyzed Surrogate Limits Lieut Result Units Notes* <br /> SegUO12 Analytical-Petaluma <br /> Iffotal Petroleum Hydrocarbons as Gasoline and BTEX by EPA 8015M/8020M <br /> asoline 9020316 2/12/99 2/13/99 0 400 ND mg/kg <br /> Benzene 000200 ND " <br /> oluene 000200 ND <br /> thylbcnzene " 000200 ND " <br /> ylenes(total) 000400 ND " <br /> Surrogate a,a,a-Triuorotoluene " _ 993 <br /> trrogate 4-Bromofluorobenzene - 840 " <br /> 1 <br /> 1 <br /> ola Analytical-Petaluma *Refer to end of report for test of notes and definitions <br /> Page 10 of 24 <br />