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Sequoia 1455 McDowell Blvd North Ste D <br /> Petaluma CA 94954 <br /> (707) 792-1865 <br /> Analytical <br /> FAX(707) 792-0342 <br /> RI Project Unocal/Tosco Sampled 419/99 <br /> 73 Digital Dr Suite 6 Project Number Tosco SS#58861205503 T8 Received 4/14199 <br /> ovato,CA 94949 Project Manager Glenn Mattuecci Reported 5/24/99 <br /> ample Descriptzan. SP-1(14) <br /> Laboratory Sample Number P904486-01 <br /> Batch Date Date Specific Method/ Reporting <br /> TAnalyte Number Prepared Analyzed Surrogate Luruts Limit Result Units Notes* <br /> Sequoia Analytical-Petaluma <br /> total Petroleum Hydrocarbons as Gasoline and BTEX by EPA 801SM/8020M <br /> Gasoline 9040563 4123199 4/23199 0 400 NO mg/kg <br /> 1enzene 000200 ND <br /> oluene " 000200 ND <br /> Ethylbenzene 000200 ND " <br /> ylenes(total) 000400 ND <br /> ethyl tert-butyl ether 00100 ND <br /> Wurrogate a a a-Trifluorotoluene 650-135 987 % <br /> Surrogate 4-Bromgfluorobenzene 650-135 863 if <br /> Ilotal Petroleum Hydrocarbons as Diesel&others by EPA 8015M <br /> Wbiesel 9040573 4/23/99 519199 500 ND mg/kg I <br /> Surrogate o-Terphenyl 11 11 " 500-150 00378 % 1 <br /> Itall Metals-by EPA 6000/7000 Senes Methods <br /> 9040488 4/22/99 4/27/99 EPA 6010A 750 ND mg/kg <br /> total Petroleum Hydrocarbons as Diesel&others by EPA 8015M <br /> iesel 9050262 5/10/99 5/13199 500 ND mg/kg <br /> Surrogate o-Terphenyl 500-150 919 YO <br /> uoia Analytical-Petaluma *Refer to end of report for text of notes and definitions <br /> ' Page 2 of 6 <br />