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Sequoia 1455 McDowell Blvd North Ste D <br /> 4q) Petaluma, CA 94954 <br /> (707) 792-1862 <br /> Analytical <br /> FAX(707) 792-0342 � <br /> ETIC Engineering Protect Exxon Sampled 5/5/99 <br /> P O Box 4429 Project Number UP3942 In-3942 Received 5/7/99 <br /> Walnut Creek,CA 94596 Project Manager Chnsta Marting Reported 5/20/99 <br /> Sample Description: MW7 <br /> Laboratory Sample Number: P905293-06 <br /> Batch Date Date Specific Method/ Reporting <br /> LA,alyte Number Prepared Analyzed Surrogate Linuts Limit Result Units Notes* <br /> Sequoia Analytical-Petaluma <br /> Total Petroleum Hydrocarbons as Gasoline and BTEX by EPA 80tSM/8020M <br /> Gasoline 9050481 5/18/99 5/18/99 500 542 ug/l <br /> Benzene " 0 500 ND " <br /> Toluene 0 500 NU <br /> Ethylbenzene 0 500 NU " <br />' Xylenes(total) „ 0 500 0 637 T <br /> Methyl tert-butyl ether 2 00 ND <br /> Surrogate a a,a-Trifluorotoluene 650-135 983 <br /> Surrogate 4-Bromofluorohenzene 650-135 92 7 <br /> r <br /> t <br /> t <br /> • <br /> Sequoia Analytical-Petaluma *Refer to end of report for text of notes and definitions <br /> Page 7 of 25 <br />