||Effects of the 1990 Clean Air Act Amendments on visibility in Class I areas and EPA report to Congress.
Polkowsky., B. V.
||Environmental Protection Agency, Research Triangle Park, NC. Office of Air Quality Planning and Standards.
||U.S. Environmental Protection Agency,
Clean Air Act ;
Wilderness areas ;
National parks ;
Air quality data ;
Air pollution episodes ;
Mathematical models ;
Air pollution forecasts ;
Acid rain ;
Implementation air pollution planning programs ;
Air quality control regions ;
Air pollution monitoring ;
Sulfur dioxide ;
Nitrogen compounds ;
NAPAP(National Acid Precipitation Assessment Program) ;
1990 Clean Air Act Amendments ;
Class I areas
||Research Triangle Park Library/RTP, NC
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||xxii, 92 p. : ill., map ; 28 cm.
In the report the EPA has assessed changes in regional visibility expected from implementation of the many provisions of the Clean Air Act Amendments of 1990. The report provides an estimate of future regional visibility conditions for the contiguous 48 United States, and used a layered approach to assessing visibility changes. A preliminary assessment was made choosing key locations and a simple emission driven air quality assessment to ascertain areas likely to see changes in the distribution of man-made visibility impairment related pollutants. This preliminary analysis pointed towards a more focused approach for the Eastern U.S., concentrating mostly on changes in sulfur dioxide emissions. For the Southwestern U.S., the mixture of pollutants is more varied and less dominated by sulfur particles.
Cover title. Project Coordinator : Bruce Polkowsky. "Office of Air Quality Planning and Standards". "October 1993". Includes bibliographical references.