As defined by the Environmental Protection Agency (EPA), Environmental Justice is the fair treatment and meaningful involvement of all people regardless of race, color, national origin, or income, with respect to the development, implementation, and enforcement of environmental laws, regulations, and policies. Fair treatment means that no group of people, including a racial, ethnic, or socioeconomic group, should bear a disproportionate share of the negative environmental consequences resulting from industrial, municipal, and commercial operations or the execution of federal, state, local, and tribal programs and policies.
EPA has developed an environmental justice strategy that focuses on the Agency's efforts in addressing these concerns.
The Environmental Justice Page of the U.S. Environmental Protection Agency
http://www.epa.gov/compliance/environmentaljustice/index.html
The Environmental Justice Page of the Sierra Club
http://www.sierraclub.org/EJ/