EPA is proposing to partially approve and partially disapprove approve a State Implementation Plan (SIP) revision submitted by the State of Wyoming on January 12, 2011, that addresses regional haze. This SIP revision was submitted to address the requirements of the Clean Air Act (CAA or ``the Act'') and our rules that require states to prevent any future and remedy any existing anthropogenic impairment of visibility in mandatory Class I areas caused by emissions of air pollutants from numerous sources located over a wide geographic area (also referred to as the ``regional haze program''). States are required to assure reasonable progress toward the national goal of achieving natural visibility conditions in Class I areas. EPA is taking this action pursuant to section 110 of the CAA. EPA is proposing a Federal Implementation Plan (FIP) to address the deficiencies identified in our proposed partial disapproval of Wyoming's regional haze SIP. In lieu of this proposed FIP, or a portion thereof, we propose approval of a SIP revision if the State submits such a revision and the revision matches the terms of our proposed FIP.
Agency Contact: Laurel Dygowski, Air Program, U.S. Environmental Protection Agency, Region 8, Mailcode 8P-AR, 1595 Wynkoop, Denver, Colorado 80202-1129, (303) 312-6144, firstname.lastname@example.org.
This is a proposed regulation.