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1 <br /> ' 1.0 INTRODUCTION <br /> ' SECOR International Incorporated (SECOR) has prepared this report to document the results of <br /> an environmental investigation conducted at the Jackpot Food Mart at 14000 Fast Highway 88 in <br /> ' Lockeford, California (Figure 1) This report was prepared at the request of Time Oil Company, <br /> the property owner The investigation involved the drilling of five soil borings, conversion of <br /> ' four of the five soil borings to groundwater monitor wells, and the collection and chemical <br /> analysis of soil and groundwater samples All work was conducted under the direction of a <br /> ' California registered geologist <br /> ' 2.0 BACKGROUND <br /> ' The site is located on East Highway 88 on the east side of the community of Lockeford in San <br /> Joaquin County, California at an elevation of approximately 100 feet above mean sea level <br /> The site is currently an operating Jackpot Food Mart/Exxon gas station The former and current <br /> ' site features are shown on the Site Map (Figure 2) <br /> In September 1991, three tanks were removed from the site by Scott Company as part of a <br /> facility upgrade In addition, the pump islands and dispensers were removed and replaced <br /> ' After removal of the USTs and the pump islands, soil samples were collected from the tank and <br /> pump island excavations The highest levels of petroleum hydrocarbons were found in the 6,000 <br /> ' gallon and the 8,000 gallon USTs at 8,900 parts per million (ppm) and 6,700 ppm total <br /> petroleum hydrocarbons as gasoline (TPHg) respectively Soil samples analyzed for total lead <br /> were below the laboratory detection limit Approximately 150 cubic yards of soil was removed <br /> from the UST and pump island excavation Soil samples collected from the excavated soil after <br /> ' it was stockpiled indicated it contained levels of petroleum hvdrocarbon,, up to 3 700 ppm 1PIlg <br /> ]nh 1iti00(15 p[ll 113 I <br /> I(H h3 RPT Sk(�(1R <br /> u c <br /> 1 <br />