Brownfield Site Assessment and Remediation at Former Star Station
Liberty City, FL
OWNER: Liberty City Community Revitalization Trust
- Soil Groundwater Assessment
CEI proposed measures that the Liberty City Community Revitalization Trust (Formerly Model City Trust) utilized to maximize the grant monies awarded by the US Environmental Protection Agency (EPA) and maximized the four site’s eligibility in the Florida Department of Environmental Protection (FDEP) Petroleum Pre-approval Program. CEI found the most effective approach to accelerate the cleanup schedule by conducting source removal of the most contaminated areas, that is, those areas that appeared to be the sources of the overall site contamination.
Without immediate source removal, groundwater contamination would have continued via contact with the petroleum saturated soil, as well as via stormwater infiltration through the source area. This action alone was sufficient to eliminate up to 90 percent of the overall contamination at many sites. Miami-Dade County Department of Environmental Resource Management (DERM) allowed additional activities during the source removal, such as open hole air sparging of the exposed groundwater, or the addition of slow release oxygenating compounds during backfilling operations that increased the rate of natural biodegradation ‘bioremediation”) of the remaining contamination. CEI completed soil and groundwater assessment activities by delineating the contaminants vertically and horizontally.