Fine-Particle Air Goals Unmet in Many Counties.

Reports on the U.S. Environmental Protection Agency's disclosure on December 17, 2004, that about a third of Americans live in counties that do not meet standards for microscopic particles of pollution. Deadline set by the agency for affected states to develop plans to bring their problem counties into compliance; Provisions of the Clean Air Act; Measures proposed by the administration of U.S. President George W. Bush to reduce emissions of particulate matter and other regulated air pollutants.