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Underground Storage Tank Abandonment Work Plan Lodi Airport 23987 North Highway 99,Acampo, California 1.0. INTRODUCTION At the request of Mr. Robert Kupka, Advanced GeoEnvironmental, Inc (AGE) has prepared this Underground Storage Tank Abandonment Work Plan for the collection of soil samples from beneath underground storage tanks (USTs) at 23987 North Highway 99, Acampo, California (site). The location of the site is illustrated on Figure 1 - Location Map. A plan of the site is illustrated on Figure 2 -Site Plan. This Work Plan has been prepared as required by the San Joaquin County Public Health Services - Environmental Health Division (PHS-EHD) for the in-place abandonment/closure of USTs. Additionally,this work plan is prepared in accordance with PHS-EHD and Central Valley Regional Water Quality Control Board (RWQCB) guidelines for the investigation of underground storage tanks (UST) sites. The purpose of this investigation is to collect soil and/or ground water samples and evaluate the petroleum hydrocarbon impact, if any,beneath the USTs. This Work Plan provides a description of the scope of work and procedures to be used in soil probe borings, soil and groundwater sample collection and analysis and soil probe boring abandonment. 2.0. BACKGROUND The site is at 23987 North Highway 99,Acampo, California(Figure 1)near the southwest comer of Jahant Road and Highway 99 Frontage (Figure 2). 2.1. SITE DESCRIPTION The site is occupied by Lodi Airport, a private airport facility for agricultural and recreational flying use. Several airplane hangers, maintenance facilities, storage facilities, one office structure and a restaurant are located on the property. The property is serviced by two domestic wells. Two 4,000-gallon USTs and one 5,000-gallon UST are located between the restaurant and office structures. All USTs are used to store aviation fuel(Avgas). A domestic well is located immediately north of the USTs.One dispenser island and two dispensers are located approximately 150 feet south of the USTs. It is our understanding that additional USTs are located near the south end of the airport; however, these USTs are owned and operated by the Lodi Parachute Center and are not included in this abandonment investigation. Most of the site is surfaced with asphalt. However, some areas of dirt and grass landscaping are Advanced GeoEnvironmental,Inc.