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TABLE GROUNDWATER EXTRACTION SYSTEM ANALYTICAL DATA Former Chevron Service Station #E9-5775 301 West Kettleman Lane Lodi California Sample Sample TPHg Benzene Toluene Ethyl- Total MtBE TBA D1PE E1BE TAME Ethanol Methanol EDS 1,2 -DCA Date, LOLation benzene Xylenes 1) I I I I 1 E 1 I I ( 1} I 1 l 06/06/01 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 06!13101 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 06/20101 Effluent <Sd <0 50 <0 50 <0 50 <0 50 <0 50 <5 4 <0 50 <0 50 <0 50 <5 0 <50 <0 50 <0 50 06!27101 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 07105101 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 07/11/01 Effluent <50 <0 50 <0 50 <0 50 <0 54 <0 50 <5 0 <0 50 <0 50 <0 50 <5 0 <50 <0 50 <0 50 0711$101 Effluent <50 <0 54 <0 50 <0 50 <0 50 <0 50 <5 0 <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 08108!01 Effluent <50 <0 50 <0 50 <4 50 <0 50 <0 54 <5 0 <0 50 <0 50 <0 50 <5 0 <50 <0 50 <0 50 08/15/01 Elfluent <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 08/21/01 Eflluint <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 08/29/01 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 09!05101 Effluent <50 <0 50 <0 50 <0 50 <0 50 <0 50 <5 0 <0 50 <0 50 <0 50 <5 d <50 <0 50 <0 50 09112!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 09/19/01 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 09/26/01 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 N!7 <5 0' <5 Oi <5 Or <5 0' ND ND ND ND ND I i— TPH6 - Total Petroleum Hydrocarbons as Gasoline 1,2 DCA - 1 2 Dhehloroethane MtBE- Methyl lertiary beryl ether TRA -tert Bulyl alcohol EDB = Ethylene dibromide DIPE m Di isopropyl ether ELBE - Ethyl tertiary butyl ether TAME = Tertiary amyl methyl ether NA = Not analyzed for this constituent ND = Not Detected or below method detection limits of benzene toluene ehtylbenzene and xylenes not to exceed 0 OOS mg/L (5 ppb) Sample collected after approximately l 400 Gallons of tap water was pumped through system durm6 cleaning procedures s Sample included 2 butanaone and tetrahydrof umn which were quantified as TYHg 4 Simple collected after apEroximately 1 500 gallons oftap water were pumped through system during cleaning rocedure • Sequoia Analytical (ELAP #1271 0624 and #12360) KifTAnalyucal ( ELAP 02236) as ND 077 43452 5701GW Edw2 Page 8 of 8