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Sequoia Geo Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N Wlget 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)921-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> j <br /> Project Unocal/Tosco Sampled 2/1/99 to 2/2/99 <br /> Digital Dr Suite 6 Project Number 227903/Unocal 5098 Received 213/99 <br /> Novato,CA 94949 Pro ect Mama er Mark Dockum Ree2rted 2/18/99 <br /> Imple Description. S-80-B1 <br /> boratory Sample Number. P902106-26 <br /> Batch Date Date Specific Method/ Reporting <br /> Italyte Number Prepared Anal ed Surrogate Limits Ltnut Result Units Notes* <br /> Seciuota Analytical-Petaluma <br /> tal Petroleum Hydrocarbons as Gasoline and BTEX by EPA 801 SM/8020M <br /> ohne 9020316 2/12/99 2/13/99 0 400 ND mg/kg <br /> Benzene 0 00200 ND " <br /> luene 000200 ND <br /> ylbenzene 000200 ND 1. <br /> ylenes(total) 000400 ND " <br /> Surrogate a,a,a-Trrfluorotoluene " - 980 % <br /> Irroiate 4-Bromofluorobenzene " - 833 " <br /> I <br /> I <br /> to Analytical-Petaluma *Refer to end of report for test of notes and defi'mitons <br /> Page 15 of 24 <br /> Rz�, <br />