Air Plan Approval; Vermont; Nonattainment New Source Review and Prevention of Significant Deterioration Permit Program Revisions; Infrastructure Requirements for National Ambient Air Quality Standards

The Environmental Protection Agency (EPA) is approving several different revisions to the State Implementation Plan (SIP) submitted to the EPA by the Vermont Department of Environmental Conservation (VT DEC). On May 23, 2017, Vermont submitted revisions to the EPA satisfying the VT DEC's earlier commitment to adopt and submit revisions that meet certain requirements of the Federal Prevention of Significant Deterioration (PSD) air permit program. Vermont's submission also included revisions relating to the federal nonattainment new source review (NNSR) permit program. This action approves those revisions and also fully approves certain elements of Vermont's infrastructure SIPs (ISIPs), which were conditionally approved by the EPA on June 27, 2017. Additionally, the EPA is approving several other minor regulatory changes to the SIP submitted by VT DEC on May 23, 2017. This action is being taken in accordance with the Clean Air Act.