Approval and Promulgation of Air Quality Implementation Plans; Pennsylvania; 2011 Lead Base Year Emissions Inventory

The Environmental Protection Agency (EPA) proposes to approve the State Implementation Plan (SIP) revision submitted by the Commonwealth of Pennsylvania regarding the 2011 lead base year emissions inventory. The base year emissions inventory SIP revision was submitted to meet the requirements of the Clean Air Act (CAA) for the Lyons 2008 lead National Ambient Air Quality Standards (NAAQS) nonattainment area (hereafter referred to as the ``Lyons Area'' or ``Area''). In the Rules and Regulations section of this Federal Register, EPA is approving the Commonwealth's SIP submittal as a direct final rule without prior proposal because the Agency views this as a noncontroversial submittal and anticipates no adverse comments. A more detailed description of the SIP submittal and EPA's evaluation is included in a Technical Support Document (TSD) prepared in support of this rulemaking action. A copy of the TSD is available, upon request, from the EPA Regional Office listed in the ADDRESSES section of this document or is also available electronically within the Docket for this rulemaking action. If no adverse comments are received in response to this action, no further activity is contemplated. If EPA receives adverse comments, the direct final rule will be withdrawn and all public comments received will be addressed in a subsequent final rule based on this proposed rule. EPA will not institute a second comment period. Any parties interested in commenting on this action should do so at this time.