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

Résumé

EPA proposes to approve the State Implementation Plan (SIP) revision 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 has made a submittal addressing the infrastructure requirements for the 2008 lead (Pb) NAAQS ("the infrastructure submittal") and a separate submittal addressing requirements in relation to State Boards. This action is being taken under the CAA. In the Final Rules section of this Federal Register, EPA is approving the District's SIP submittals as a direct final rule without prior proposal because the Agency views these as noncontroversial submittals and anticipates no adverse comments. A more detailed description of the