A brownfield is a property, the expansion, redevelopment, or reuse of which 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 United States. 1 They have the potential to affect property values and potentially involve extensive and disruptive remediation.
Federally designated superfund sites are generally larger and more contaminated than brownfields. Contaminants include asbestos, dioxin, lead (Pb), radiation, and soil bioavailability. 2
The HazardHub Brownfield/Superfund Risk file consists of 500 foot buffers around known brownfield sites and 2,500 foot buffers around known superfund sites. Figure 1 shows sites and buffers for a portion of the St. Louis Metropolitan Area.
Figure 1 Brownfield/Superfund St. Louis Metro
The HazardHub Brownfield/Superfund file is delivered as a two point files (sites) and two polygon files (buffers) for the conterminous United States. All HazardHub geospatial files are delivered as Esri shapefiles (other formats upon request) in a projection designated by the client and include complete metadata (FGDC format).