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Preliminary Site Assessment Work Plan Bogetti's Orchard Restaurant 2393 East Highway 132, Vernalis, California 1.0. INTRODUCTION At the request of Mr. Albert Bogetti, Advanced GeoEnvironmental, Inc. (AGE) has prepared the enclosed Preliminary Site Assessment Work Plan for the Bogetti's Orchard Restaurant site located at 2393 East Highway 132, Vernalis, California. The location of the site is illustrated on Figure 1. A plan of the site is illustrated on Figure 2. This Work Plan has been prepared as required by the San Joaquin County Public Health Services - Environmental Health Division (FHS-EHD) to evaluate an unauthorized release of petroleum hydrocarbon compounds from underground storage tanks (USTs) formerly located at the site. Additionally,this work plan is prepared in accordance with PHS-EHD and Central Valley Regional Water Quality Control Board(CVRWQCB)guidelines for the subsurface investigation of UST sites. The purpose of this site assessment is to evaluate the lateral and vertical extent of petroleum hydrocarbon impacts to soil and groundwater at the site. This Work Plan provides a description of the scope of work and procedures to be used in soil borings, soil and groundwater sample collection and analysis, soil boring abandonment, and ground water monitoring well installation. 2.0. BACKGROUND 2.1 SITE LOCATION The site is located in a business/agricultural area of northern Vernalis, California, in southern San Joaquin County(Figure 1). The property is located in a highway-retail business development owned by Mr. Albert Bogetti. A produce stand and Restaurant is located on the property. Three structures are located on the property. The southern edge of the site is against Highway 132. 2.2. UNDERGROUND STORAGE TANK REMOVAL It is our understanding that one 10,000-gallon gasoline UST, one 5,000-gallon gasoline UST, one 5,000-gallon o4eaded diesel UST and associated piping were removed from the site in late February 1999. Based on the analytical report from GeoAnalytical of Modesto, soil samples were collected and analyzed from beneath the end of UST#1 and UST 2, soil sample was collected from south end of UST43 and soil samples were collected from the ends of the former dispenser island at a depth of four feet below surface grade(bsg). A `grab' ground water sample was collected at the north end of Advanced CeoEnvironmenial,Inc.