WHAT IS A BROWNFIELD?
A brownfield is a property, of which the expansion, redevelopment, or reuse may be complicated by the presence, or potential presence, of a hazardous substance, pollutant, or contaminant. It is estimated that there are more than 450,000 brownfields in the U.S. Cleaning up and reinvesting in these properties increases local tax bases, facilitates job growth, utilizes existing infrastructure, takes development pressures off of undeveloped, open land, and both improves and protects the environment.
The above information is from the United States Environmental Protection Agency
For more information on brownfields:
EPA Brownfield Site: https://www.epa.gov/brownfields/overview-epas-brownfields-program