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AIR QUALITY CRITERIA FOR CARBON MONOXIDEFOR RELEASE: THURSDAY, AUGUST 17, 2000 AIR QUALITY CRITERIA FOR CARBON MONOXIDE EPA is releasing the “Air Quality Criteria for Carbon Monoxide,” a revision of the 1991 document. EPA found that ambient (outdoor) concentrations in metropolitan areas of the United States have decreased significantly since the late 1980s. This decline approximately follows the decline in motor vehicle emissions of carbon monoxide. Exposure of the general population to carbon monoxide, particularly from indoor sources, cannot be precisely estimated at this time. Under the Clean Air Act, carbon monoxide is one of six criteria pollutants for which EPA has established National Ambient Air Quality Standards. Periodically, EPA reviews the scientific basis for these standards by preparing an Air Quality Criteria Document. The document (EPA/600/P-99/001F) may be found at EPA’s National Center for Environmental Assessment web site at: http://www.epa.gov/ncea/. A notice of availability will appear in the Federal Register on August 17, 2000. R-124 ### Release date:08/17/2000 Receive our News Releases Automatically by Email
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