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. Closure Summary Report ' MEL BOKIDES PETROLEUM 501 West Lodi Avenue, Lodi, California ' 1.0, INTRODUCTION ' At the request of Mr Nicholas Bokides of Mel Bokides Petroleum, hie , Advanced GeoEnvironmental, Inc (AGE) has prepared this Closure Summary Report for 501 West Lodi Avenue (site), Lodi, California The site setting is illustrated on Figure 1 Site structures and ' monitoring well locations are depicted on Figure 2 r The purpose of this report is to summarize site assessment and corrective action activities at the site to date,estimate the remaining amounts of petroleum hydrocarbon-impacted soil and ground water, and provide justifications for a site closure request The report was prepared in accordance with guidelines established by the Tri-Regional Board Staff Recommendations for Preliminary ' Investigations and Evaluation of Underground Storage Tank Sites (RWQCB, 1990) and the California Water Resources Control Board's California Underground Storage Tank Regulations (CWRCB, 1992) , . 2.0 BACKGROUND The site is located at the northwest corner of the Lodi Avenue and Hutchins Street in Lodi,California ' at an elevation of approximately 45 feet above mean sea level, it is currently vacant and unpaved The site was formerly an Arco service station,which stored and distributed gasoline and diesel fuel for retail sale The site was operated by the Tide Water Associated Oil Company from 1949 to 1966, ' and by the Philips Petroleum Company in 1966 Between 1966 and 1985 the site occupants have not been determined MBP purchased the site in 1985 and operated it as a fuel service station until February 1998, when the underground storage tank(UST) system was removed 2 1 INITIAL SITE INVESTIGATIONS Information regarding initial investigations conducted at the site was obtained from the Clearwater Group, Inc (CGI)-prepared Preliminary Site Assessment Report, dated October 11, 1995 CGI ' installed two ground water monitoring wells(BMW-1 and BMW-2)at the site in July 1995,analysis of soil samples collected during well installation detected only low concentrations of methyl tertiary butyl ether(MTBE) Monitoring well MW-5 was installed by Geocon Environmental Consultants ' in November 1994 - - - - The on-site monitoring wells were sampled five times between 1995 and May 1998 The greatest concentration of total petroleum hydrocarbons as gasoline (TPH-g) and benzene, toluene, ethylbenzene, and total xylenes (BTEX compounds) were detected during the May 1998 quarterly r Advanced Geo Environmental,Inc 1