Brownfield Sites are property sites that have been contaminated with hazardous materials and/or pollutants. While not as large as a Superfund site, they still require extensive cleanup before the site can safely be used again. The property may be a vacant lot, an abandoned factory or other industrial sites, or a piece of land where construction has not yet begun.
The EPA estimates there are more than 450,000 brownfields nationwide – the majority concentrated in urban areas like New York City; however even rural communities suffer from these contamination issues.
HazardHub maintains a comprehensive database of all known brownfield locations in the US.