Approval and Promulgation of Air Quality Implementation Plans; District of Columbia; Infrastructure Requirements for the 2008 Lead National Ambient Air Quality Standards and State Board Requirements

摘要

EPA is taking direct final action to approve two State Implementation Plan (SIP) revisions submitted by the District of Columbia (hereafter "the District") pursuant to the Clean Air Act (CAA). Whenever new or revised national ambient air quality standards (NAAQS) are promulgated, the CAA requires states to submit a plan for the implementation, maintenance, and enforcement of such NAAQS. The plan is required to address basic program elements including, but not limited to, regulatory structure, monitoring, modeling, legal authority, and adequate resources necessary to assure attainment and maintenance of the NAAQS. These elements are referred to as infrastructure requirements. The District made a submittal addressing the infrastructure requirements for the 2008 lead (Pb) NAAQS and a separate submittal addressing requirements in relation to State Boards. EPA is approving portions of the infrastructure requirements for the 2008 lead NAAQS and the requirements addressing State Boards for the District in accordance with the requirements of the CAA.