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Mr. Carl Navarra Report of Tank Removal January 16, 1999 Page Four accomplished to approximately 2 feet below the surface. The pump island area which was excavated to a depth of approximately 7 to 8 feet was lined with plastic and backfilled using the sand backfill removed from the tank pit. This area was also compacted with the 66 inch vibratory pad foot compactor to approximately 2 feet below the surface. The soil removed from beneath the pump islands was stockpiled in preparation for future treatment. Samples were taken to characterize this stockpile. The site was then cleared of loose material and debris and the stockpile and future treatment area fenced. The stockpile was covered with plastic. Observations • Three levels of service stations existed at this site. • The registered underground storage tanks removed from the site did not appear to have any visual signs of deterioration. • The sand backfill around the tanks did not appear(by sight and smell) to be impacted from tank or piping leakage. The soil/water interface contained hydrocarbon affected soil. • The pump islands,particularly the area where the dispensers were previously installed/appeared to be the source of hydrocarbons affecting this site. • The soil beneath the four 1000 gallon storage tanks and the pipelines appeared to contain biodegraded hydrocarbons. • The water table on this site is approximately 9 feet below grade. Remediation to Date The following remediation of hydrocarbon affected water and soil was performed during the tank and piping removal operations as well as the site characterization activities. The site characterization was a byproduct of the search for tanks and underground piping. • The pump island area was over excavated to a depth of 7 to 8 feet and the soil stockpiled on site for future treatment. The soil stockpile was sampled to obtain preliminary information for future treatment. • Approximately 2000 gallons of hydrocarbon affected water was skimmed from the water accumulating in the tank pit approximately 9 feet below the surface.