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TABLE 1 GROUNDWATER EXTRACTION AND TREATMENT SYSTFM ANALYTICAL DATA Former Chevron Service. Station #9 5775 301 West Kettleman Lane Lodi Cahfomla Sample Sample TPHg Benzene Toluene Ethyl Total MtBE TBA DIPS EtBE TAME Ethanol Methanol ED13 l2 -DCA Date Location 1 1 benzene Xylenes 1 f I 1 I ] I 06/06/01 Effluent <50 <0 50 <0 50 <0 50 <0 50 <0 50 <5 0 <0 50 <0 50 <0 50 <5 0 <50 <0 50 <0 50 06/13/01 Effluent <50 <0 50 <0 50 <0 50 <0 50 <0 50 <5 0 <0 50 <0 50 <0 50 <5 0 <50 <0 50 <0 50 06/20/01 Effluent <50 <0 50 <0 50 <0 50 <0 50 <0 50 <5 0 <0 50 <0 50 <0 50 <5 0 <50 <0 50 <0 50 06/27/01 Effluent <50 <0 50 <0 50 <0 50 <0 50 <0 50 <5 0 <0 50 <0 50 <0 50 <5 0 <50 <0 50 <0 50 07/05/01 Effluent <50 <0 50 <0 50 <0 50 <0 50 <0 50 <50 <0 50 <0 50 <0 50 <5 0 <50 <0 50 <0 50 07/11/0 1 Effluent <50 <0 50 <0 50 <0 50 <0 50 <0 50 <5 0 <0 50 <0 50 <0 50 <5 0 <50 <0 50 <0 50 07/18/01 Effluent <50 <0 50 <0 50 <0 50 <0 50 <0 50 <50 <0 50 <0 50 <0 50 <5 0 <50 <0 50 <0 50 07/25/01 Effluent <50 <0 50 <0 50 <0 50 <0 50 <0 50 <5 0 <0 50 <0 50 <0 50 11 <50 <0 50 <0 50 08/02/01 Effluent <50 <0 50 <0 50 <0 50 <0 50 <0 50 <5 0 <0 50 <0 50 <0 50 <5 0 <50 <0 50 <0 50 08/08/01 Effluent <50 <0 50 <0 50 <0 50 <0 50 <0 50 <5 0 <0 50 <0 50 <0 50 <5 0 <50 <0 50 <0 50 08/15/01 Effluent <50 <0 50 <0 50 <0 50 <0 50 <0 50 <5 0 <0 50 <0 50 <0 50 <5 0 <50 <0 50 <0 50 08/21/01 Effluent <50 <0 50 <0 50 <0 50 <0 50 <0 50 <5 0 <0 50 <0 50 <0 50 <5 0 <50 <0 50 <0 50 08129/01 Effluent <50 <0 50 <0 50 <0 50 <0 50 <0 50 <5 0 <0 50 <0 50 <0 50 <5 0 <50 <0 50 <0 50 Discharge Limitation ND <5 0' <5 0' <5 O' 1 <5 01 1 ND NQ I ND ND I NQ I --- I ---- i -- i -- EXPLANATIONS ANALYTICAL LABORATORIES TPHG = Total Petroleum Hydrocarbons as Gasoline DIPE = Di isopropy3 ether Sequoia Analytical (ELAP 01271 k 1624 and NI2360) 1.2 DCA a 1,2 Dichloroethane ELBE = Ethyl tertiary butyl ether KLIT Analytical (ELAP 712236) MERE- Methyl ternary butyl ether TAME =Tertiary amyt methyl ether TBA - tett Butyl alcohol NA - Not analyzed for this constituent EDB = Ethylene dlbgimlde ND = Not Detected or below method detection limits NiTES ` Sum of benzene toluene ehtylbenzene and xylenes not to exceed 0 005 mg/L (5 ppb) ple collected atter approximately 1 400 gallons of tap water was pumped through system during cleaninb procedures Ie included 2 butanaane and tetrahydrofuran which were quantified as TPHg Sam Ie collected after approximately 1500 Gallons of t2p water were pumped throubh system dunnG cleanmG procedures Tetrahydrofuran r orted as ND (<5 0) • D77 43452 5701GWEdw Page 8 of 8