Explore Air

Archives - April, 2004

Ozone Nonattainment Area Designation for Great Smoky Mountains National Park and Shenandoah National Park

The National Park Service has been following federal and state activities related to the implementation of the new 8-hour ozone standard, including proposed rules by the Environmental Protection Agency (EPA) on various alternatives for designating and classifying nonattainment areas that are violating the ozone standard. Two letters from the National Park Service were recently sent to the EPA which contained issues concerning the nonattainment designations for Great Smoky Mountains National Park and Shenandoah National Park. National Park Service concerns relate to state-recommended boundaries that define only parts of these parks as nonattainment for the 8-hour ozone national ambient air quality standard and in a manner that would isolate affected park areas from nearby existing emission source areas and potential emission growth areas. Such treatment may needlessly delay implementation of reasonable and effective control measures necessary to improve ozone air quality in the parks to levels protective of human health and its ozone sensitive resources. Nationally, over 110 park units are currently contained within State and EPA recommended ozone nonattainment area counties. EPA is required to complete the designation process U.S.-wide by mid-April 2004.

Great Smoky Mountains National Park Comments

Shenandoah National Park Comments

NPS Nonattainment Designation Guiding Principles

Great Smoky Mountains NP Ozone Nonattainment Comment Letter - February 2004 (PDF format)
Shenandoah NP Ozone Nonattainment Comment Letter - February 2004  (PDF format)

At the end of last year, the Department of the Interior, on behalf of the National Park Service, provided comments to the Environmental Protection Agency (EPA) on EPA's proposed ozone implementation rule. See letter below.

December 31, 2003, DOI letter to EPA (PDF format)

updated on 11/22/2004  I   http://nature.nps.gov/air/hot/archive/200404/headlines.cfm   I  Email: Webmaster