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42 U.S.C. § 7492

Visibility

United States · Title 42 — THE PUBLIC HEALTH AND WELFARE · Status: effective

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42 U.S.C. § 7492, Visibility, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/481373
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The Administrator, in conjunction with the National Park Service and other appropriate Federal agencies, shall conduct research to identify and evaluate sources and source regions of both visibility impairment and regions that provide predominantly clean air in class I areas. A total of $8,000,000 per year for 5 years is authorized to be appropriated for the Environmental Protection Agency and the other Federal agencies to conduct this research. The research shall include— Within 24 months after November 15, 1990, the Administrator shall conduct an assessment of the progress and improvements in visibility in class I areas that are likely to result from the implementation of the provisions of the Clean Air Act Amendments of 1990 other than the provisions of this section. Every 5 years thereafter the Administrator shall conduct an assessment of actual progress and improvement in visibility in class I areas. The Administrator shall prepare a written report on each assessment and transmit copies of these reports to the appropriate committees of Congress. Whenever, upon the Administrator’s motion or by petition from the Governors of at least two affected States, the Administrator has reason to believe that the current or projected interstate transport of air pollutants from one or more States contributes significantly to visibility impairment in class I areas located in the affected States, the Administrator may establish a transport region for such pollutants that includes such States. The Administrator, upon the Administrator’s own motion or upon petition from the Governor of any affected State, or upon the recommendations of a transport commission established under subsection (b) of this section 11 So in original. Words “subsection (b) of this section” probably should be “paragraph (2)”. may— Whenever the Administrator establishes a transport region under subsection (c)(1), the Administrator shall establish a transport commission comprised of (as a minimum) each of the following members: All representatives of the Federal Government shall be ex officio members. The visibility transport commissions shall be exempt from the requirements of chapter 10 of title 5. A Visibility Transport Commission— shall, within 4 years of establishment, issue a report to the Administrator recommending what measures, if any, should be taken under this chapter to remedy such adverse impacts. The report required by this subsection shall address at least the following measures: The Administrator pursuant to subsection (c)(1) shall, within 12 months, establish a visibility transport commission for the region affecting the visibility of the Grand Canyon National Park.

Legislative history

The public laws that enacted or amended this section. Tallies are for the whole bill as it passed each chamber — often an omnibus covering far more than this provision — not a vote on this section alone.

  • Enacted byPub. L. 101-549(S. 1630)1990-11-15
    Clean Air Act Amendments of 1990
  • Amended byPub. L. 117-286(H.R. 5961)2022-12-27
    To make revisions in title 5, United States Code, as necessary to keep the title current, and to make technical amendments to improve the United States Code.
    House: 413–3Senate: no recorded tally