||IMPROVE progress report : appendix A /
Pitchford, Marc L. ;
||Environmental Monitoring Systems Lab., Las Vegas, NV. ;National Park Service, Lakewood, CO. Air Quality Div.
|| Office of Air Quality Planning and Standards, Office of Air and Radiation, U.S. Environmental Protection Agency,
Air quality--Government policy--United States--States. ;
Air quality--United States--States--Measurement. ;
Environmental monitoring--United States--States. ;
Parks--Government policy--United States--States.
Air pollution control ;
National parks ;
States(United States) ;
Performance evaluation ;
Air filters ;
Quality control ;
Data processing ;
Clean Air Act and Amendment of 1977 ;
Class I Federal Areas
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||180 pages : illustrations ; 28 cm
In Section 169A of the Clean Air Act as amended August 1977, Congress declared as a national goal 'the prevention of any future, and the remedying of any existing, impairment of visibility in mandatory class I Federal areas which impairment results from manmade air pollution.' Mandatory class I Federal areas are national parks greater in size than 6000 acres, wilderness areas greater in size than 5000 acres and international parks that were in existence on August 7, 1977. The section required the Environmental Protection Agency (EPA) to promulgate regulations requiring States to develop programs in their State Implementation Plans (SIPs) providing for visibility protection in these areas. EPA promulgated these regulations on December 2, 1980.
"May 1990." Includes bibliographical references. "EPA-450/4-90-008a." Microfiche.