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1.0 Mtroduction <br /> On behalf of Pacific Bell, IT Corporation(IT)was contracted to provide environmental <br /> consulting services for the removal of one 4,000-gallon, diesel fuel underground storage tank <br /> (UST) at 124 West Elm Street in Lodi, California(Figure 1). Pacific Bell contracted TAIT <br /> Environmental Systems(TAIT)to provide and operate equipment to perform the UST removal. <br /> R.H.L. Designs, Inc. was contracted to provide engineering and permitting services. UST <br /> removal activities discussed in this report were completed in compliance with local and state <br /> regulatory requirements in October 2001. <br /> 1.1 Site Description <br /> The western portion of the site is occupied by a two-story office building housing Pacific Bell <br /> switching equipment and administrative personnel. The western portion of the site had <br /> previously been an asphalt-paved lot for parking of Pacific Bell fleet and personal vehicles. At <br /> the time of field activities,the majority of the asphalt pavement had been removed in preparation <br /> for a planned expansion of the office building to the east. A 4,000-gallon UST containing diesel <br /> fuel was located in the central portion of the site, adjacent to the building(Figure 2). As part of <br /> the planned building expansion activities, the tank was to be removed. <br /> The site is located in a predominantly commercial area. Three groundwater monitoring wells <br /> were noted on the adjacent property,with the closest well approximately 175 feet to the <br /> northeast. The wells were located adjacent to a vacant retail store. The nearest surface water is <br /> the Mokelumne River,located approximately 3/4-mile to the north. <br /> 1.2 Permits <br /> Prior to the initiation of excavation activities,R.H.L. Designs,Inc. obtained permits for tank <br /> removal from the San Joaquin County Public Health Services—Environmental Health Division <br /> (SJCPHS-EHD). Upon receipt of the permit, a representative of the SJCPHS-EHD was <br /> scheduled to observe the tank closure activities. Copies of the permit and the Unified <br /> Consolidated Program Tank forms are presented in Appendix A. <br /> CNCD\10-30-01\0:SHARE\US1\01-0076.doc 1 <br />