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9 w <br /> r' <br /> 1.0 INTRODUCTION/HISTORY <br /> The subject property is a located in central Escalon (Figure <br /> 1). The site currently is occupied by a former retail fueling <br /> facility. <br /> On April 17, 1991, soil samples were collected at the site by <br /> RESNA Industries/WaterWork Corp. (RESNA) personnel during the <br /> routine removal of six underground (u/g) storage tanks. The <br /> u/g tanks consisted of one 550-gallon diesel tank, two 2,000- <br /> gallon gasoline tanks, one 4,000-gallon gasoline tank, 10,000-- <br /> gallon regular gasoline tank, and a 350-gallon waste oil tank. <br /> Soil samples were collected from native soil beneath each of <br /> the above tanks at the locations shown on Figure 2. <br /> Laboratory analysis of samples indicated that elevated <br /> concentrations of both gasoline and diesel petroleum <br /> hydrocarbons were present in soils within the former tank pits <br /> (Table 1). Gasoline hydrocarbons were primarily confined to <br /> the northeastern section of the excavation pit #1. Diesel <br /> hydrocarbons were confined to excavation pit #2. <br /> Based op_ the laboratory results, investigation of the extent <br /> of soil and possible groundwater contamination is required <br /> under San Joaquin County Public Health Services Environmental <br /> Health Division guidelines. <br /> This Preliminary Report is intended to provide background <br /> information pertinent to the site; to present a workplan for <br /> an initial investigation and to establish acceptable <br /> methodologies whereby the workplan can be implemented. <br /> 2.0 BACKGROUND TECHNICAL DATA <br /> 2.1 Name and address of contact person; site address: <br /> Conn tact Person: Mrs. Margaret Ekholm <br /> 1211 Avenue `G' <br /> Sterling, IL 61081 <br /> SiteAddress: 1702 Jackson Street <br /> Fscalon, CA 95320 <br /> 2.2 Map showing site location, relative to nearby landmark <br /> The site location is shown on Figure 1. <br /> C` �i <br /> .,`, <br /> EPRD730.WP 1 <br />