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f WZI INC. <br /> 1.0 INTRODUCTION <br /> This workplan is designed to conduct a soil and group iwater hydrocarbon contamination site <br /> assessment investigation as a result of an unauthorizec.release of hydrocarbon compounds from a <br /> single underground storage tank(UST)that was formerly located at the property owned by Mr. <br /> Henry Hansen at 200 South Cherokee Lane, Lodi, Cal ifornia(Exhibit 1). The site is located <br /> within the city limits of Lodi and is 30 feet east of Cherokee Lane (Exhibit 2). <br /> The site is comprised of a single 1.2-acre parcel on w ich an automobile repair shop is located. <br /> The property is owned by Mr. Henry Hansen, an individual who has owned the parcel for over <br /> ten years. The site is managed by Mr. Verseput(Rig ay Properties). The site is leased to <br /> Millennium Automotive Repair which has occupied tt a site as an automobile repair facility for <br /> over five years. <br /> Waste oil from automotive repairs was reportedly stored in a single-walled, 350-gallon UST that <br /> was located south of the main building in the central portion of the property (Exhibit 2). This <br /> tank was reportedly in service from the early-1980's utitil 1998 when it was taken out of service. <br /> The tank was reportedly never used to store any fuels and no dispensers or dispenser piping was <br /> observed to be present during the tank removal. <br /> .9 <br /> The tank was removed by Jim Thorpe Oil on July 23, 199Y. Prior to removal, the tank was triple <br /> rinsed onsite. Approximately 275 gallons of water w re removed from the tank and disposed of <br /> as liquid hazardous waste. <br /> No obvious holes were found in the tank according to the San Joaquin County Public Health <br /> Services, Environmental Health Division(PHSEHD) Inspection Report dated 7/23/98. <br /> Regulatory Agency correspondence is included as Ap endix I. Soil immediately adjacent to the <br /> base of the tank on the east and north wall of the excavation was inspected and found to contain <br /> hydrocarbon staining and exhibited a gasoline-likes ell. <br /> 08420010.001 1 <br />