The Environmental Protection Agency has finalized stronger air quality standards for soot pollution and one regional organization said it is a step in the right direction. Soot is fine particulate matter from power plants, vehicles and refineries, and the EPA revised its National Ambient Air Quality Standards for soot. Willie Dodson, central Appalachian field coordinator for Appalachian Voices, said it reduces the maximum allowable amount of soot in the air from 12 micrograms per cubic meter of air to nine. ...