Which of the following statements would you associate with brownfields?

1. They are contaminated with hazardous chemical pollutants.
2. They are lands left barren due to over cultivation.
3. They are underused industrial facilities available for reuse.

Brownfields are abandoned or underused industrial and commercial facilities available for reuse. Expansion or redevelopment of such a facility may be complicated by real or perceived environmental contaminations. The land may be contaminated by low concentrations of hazardous waste or pollution, and has the potential to be reused once it is cleaned up.