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1551 IndusftW <br /> " San Carlos,CA 94070-4111 <br /> 4 = Sequoia- - - - - - - - - - - - -- - _ - _ _ - _ -- (650)�2-96o0 <br /> 4D_ Analytical -F�`6�' bsc:om <br /> www.sequoialabs com <br /> Geuler-Ryan/Geostrategies(l) project Towo(5) Sampled. 8/3/00 to 8/4/00 <br /> T 6747_Sierra Court,Swte J==__-- ---_ _ —Project Project Number_Unocal SS#5886/2701 West March Lane,StacHbaceived --- <br /> Dublin,CA 94568 Project Manager Deanna Hanhn 8/28/00 <br /> Sample Description: MW-4S <br /> Laboratory Sample Number: L008034-06 <br /> Batch Date Date Specific Method/ Reporting <br /> =Number- - Prepared =-Analyzed—Surrogate Limits= - Lumt= _- Result-= Units---__ = Notes* <br /> Seauoia Ans"cal-San Carlos <br /> Total Pureeable Hydrocarbons(C6-0121.BTEX and MTBE by DHS LUFI' <br /> Puigeable Hydrocarbons as Gasoline 0080080 8/17/00 8117/00 500 ND 119/1 <br /> Baizcue H 0 500 ND " <br /> Toluene " 0 500 ND " <br /> Ethylbenzene ^ " 0 500 ND " <br /> Xylenes(total) " " 0 500 ND ^ <br /> Methyl tat-butyl ether 5 00 ND <br /> Surrogate a,a,a-Tnfluorotoluene 700-130 110 % <br /> Volatile OraamcOxyqenated Compounds by EPA Method 8260B <br /> Ethanol 0080033 8/7/00 817/00 1000 ND ug/I <br /> Tat-butyl alcohol 100 ND " <br /> Methyl tert-butyl etber 2 00 3.20 <br /> Di-isopropyl ether 2 00 ND " <br /> Ethyl tert-butyl ether 2 00 ND " <br /> Tart-amyl methyl ether " ^ " 2 00 ND " <br /> Surrogate 1,2-Dichloroethane-& 760-114 100 % <br /> Diesel Hydrocarbons(C9-C241 by DHS LUFI' <br /> Diesel Ran a Hydrocarbons OH 15021 8115100 8/17/00 DHS LUFr 500 ND u8/1 <br /> Surrogate n Pentacosane " " 50-150 978 % <br /> Sequoia Analytical-San Carlos *Refer to end of reportfor text of notes and deftnwons <br /> Page 7 of 30 <br />