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VUJ/1-K L01-1 J Wk..jdward-Clyde Consultants INTRODUCTION In September of 1986, LOF Glass Company retained Woodward-Clyde Consultants to assist them in the assessment and remediation of subsurface soil contamination identified during the removal of an idle underground gasoline storage tank. The removed tank was located adjacent to an existing 5,000-gal tank which will remain in service. An inventory reconciliation monitoring system will be installed in the tank and the existing despensing pump relocated over the previous location of the removed tank. LOF is anxious to complete the installation not only to resume normal operations but also to prevent the currently-uncovered tank from floating up out of the ground should the water table rise in response to the impending rains. INVESTIGATIVE ACTIVITIES Tank Removal The idle 550-gal tank was removed by B & C Construction on September 2, 1986. A soil sample was taken from below the tank and submitted to Canonie Environmental for analysis. Although the tank was reported to be in sound condition with no apparent leaks, onsite personnel detected a strong hydrocarbon odor in the soils surrounding the tank. The excavation was backfilled to avoid any safety hazards. The. sample analyses found levels of total hydrocarbons and benzene to be 49 and 2.9 mg/kg, respectively. The sample .was also tested for other aromatics and lead. A copy of the lab results is appended to this report. The observations and analytical results from the tank removal suggested that the extent of contamination was limited and probably confined to the immediate vicinity of the tank. The absence of known historical spills or inventory losses and the good condition of the tank supported this assumption. In addition, the excavation around the adjacent .tank extended below the water table, and no evidence of hydrocarbons was apparent on the