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L <br />TANK REMOVAL REPORT <br />BP GAS STATION <br />L 75 East Alpine Road <br />Stockton, California <br />L September 26, 1994 <br />L <br />1.0 INTRODUCTION <br />L On September 14, 1994, James Hoblitzell & Associates (H & A), General Contractors, removed <br />four underground storage tanks (UST's) from the site of a former Mobil Oil and later BP gasoline <br />station at the intersection of East Alpine and North EI Dorado in Stockton, California. H & A <br />retained Upgradient Environmental Consultants (Upgradient) to witness the UST removal and <br />collect soil samples from the tank excavation. The UST's were removed under the supervision of <br />personnel from the Stockton Fire Department and San Joaquin County Public Health Services, <br />Environmental Health Division. The purpose of this report is to summarize field and laboratory <br />` data regarding the presence or absence of petroleum contamination in the UST excavation. <br />2.0 SITE DESCRIPTION <br />` The site is the former location of a gasoline service station in north -central Stockton (Figure 1). <br />The property was residential prior to 1955, when it was leased by Mobil Oil Corporation and a <br />gasoline service station was constructed. The station was sold to British Petroleum (BP) in the <br />1980's, and operated until 1990, when it was converted to an automobile repair garage. The site <br />was abandoned in 1992 and the building was demolished in early September, 1994. <br />L <br />The topography in the area is flat. The area is zoned for mixed commercial and residential use, and <br />most of the nearby properties are residences. A church and school are located to the west of the site <br />on Alpine Road. <br />According to the San Joaquin County Flood Control and Water Conservation District 1993 <br />groundwater map, the average depth to first groundwater in the vicinity of the site is between 65 <br />and 70 feet. <br />L <br />6. <br />L <br />i"M <br />