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0 �71 TABLE GROUNDWATER EXTRACTION AND TREATMENT SYSTEM ANALYTICAL DATA Former Chevron Service Station f14-5775 301 West Kettleman Lane Lodi, California Sample Sample TPHg Benzene Toluene Ethyl- Total MtBE TBA DIPE ELBE TAME Ethanol Methanol EDB 1,2 -DCA Date Location benzene Xylenes 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 Dischar a Limitation ND <S.Ot <S.Ot <5.01 <5.0' NO ND ND ND ND - - - - EXPLAtV�710 ANALYTICAL LABORATORIES TPHg - Total Petroleum Hydrocarbons as Gasoline DIPE = Di -isopropyl ether Sequoia Analytical (ELAP A 1271, 311624 and 1112360) 1,2 -DCA- 1,2-Dichloroethanc ELBE - Ethyl tertiary butyl ether KiffAnalytical (ELAP #2236) MLBE- Methyl tertiary butyl ether TAME - Tertiary amyl methyl ether TBA - ten -Butyl -alcohol NA - Not analyzed for this constituent EDB - Ethylene dibromide ND - Not Detected or below method detection limits NOTE& 'Sum ofbenaene, toluene, ehtylb=mc and xylenes not to exceed 0.005 mpJL (5 ppb). ' Sample collected after approximately 1,400 gallons ortap water was pumped through system during cleaning proccclum. 'Sample included 2-butanaone and tetrehydrollwan which were quantiried as TPHg ' Sample collected alter approximately 1,500 gallons of tap water were pumped through system during cleaning procedures. TetrahydroNran reported as ND (<5,O). 077.43452.5701GWEdw.As Page 8 of B