Tri-City Oil Conservationist, Inc.

• Site Profile
• Tri-City Oil Conservationist Reuse Fact Sheet (PDF: 1 pp, 899K)
• Additional Site Documents including Five Year Reviews, Records of Decisions (ROD) and Explanation of Significant Differences (ESD).
• For documents not available on the website, please contact the Region 4 Freedom of Information Office (http://www.epa.gov/region4/foiapgs/submit.htm).

Site Background:
The Tri-City Oil Conservationist Corporation property, occupying about 1/4 of an acre, housed a heating oil business from 1960 to 1975. From 1978 to 1983, the facility acted as a waste oil storage and distribution center. Three aboveground storage tanks and one known underground storage tank were on site. While it operated, people complained to the State about the odor and sloppy practices at the facility. In 1982, 3,000 gallons of oil were spilled. When the owner failed to clean up the site at the request of the Florida Department of Environmental Regulation (FDER), the EPA removed the bulk of the oil and later removed contaminated soil. Tri-City was dissolved involuntarily in 1983, and the owners are in bankruptcy. An estimated 35 people are served by nine private wells and live within one block of the site. The site is about 3,000 feet from the Hillsborough River and within 3 miles of the public well field serving the community's 16,000 residents. Elevated levels of lead were found in initial sampling of the groundwater, but none were found in later samples. Soil excavated from the area was heavily contaminated with volatile organic compounds (VOCs) and heavy metals from former site activities. The removal of contaminated soils and sludges in 1984 has eliminated the threats to human health and the environment.

Cleanup Progress: Construction Completed
The EPA cleaned up the 3,000-gallon oil spill in 1984 and excavated 850 cubic yards of contaminated soil and sludges, which were disposed of off site. The excavated areas were brought back to their original grade using clean fill, and the EPA planted grass to prevent erosion.

Tests of soil, groundwater, and sediment in 1986 showed that the source of contamination was removed. After detailed site analyses, the EPA determined that because of the success of the initial actions undertaken in 1989, no further actions were required at the site. The removal of contaminated soil and sludge has restored the site to the environmental standards established by the State and the EPA. The site was deleted from the NPL on September 1, 1988. No Five-Year Reviews are required for the Site. No further updates are warranted at this time.