Approval and Promulgation of Implementation Plans; Vermont: Prevention of Significant Deterioration; Greenhouse Gas Permitting Authority and Tailoring Rule

EPA is approving revisions to the Vermont State Implementation Plan (SIP), submitted by the Vermont Department of Environmental Conservation (VT DEC) Air Pollution Control Division to EPA on February 14, 2011. The SIP revision modifies Vermont's Prevention of Significant Deterioration (PSD) program to establish appropriate emission thresholds for determining which new stationary sources and modification projects become subject to Vermont's PSD permitting requirements for their greenhouse gas (GHG) emissions. EPA proposed approval of these regulatory revisions on August 16, 2012, and received no comments. This action affects major stationary sources in Vermont that have GHG emissions above the thresholds established in the PSD regulations.