Approval and Promulgation of Air Quality Implementation Plans; Delaware; Prevention of Significant Deterioration; Greenhouse Gas Permitting Authority and Tailoring Rule Revision

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EPA is proposing to approve a State Implementation Plan (SIP) revision submitted by the Delaware Department of Natural Resources and Environmental Control (DNREC). This revision pertains to EPA's greenhouse gas (GHG) permitting provisions as promulgated on June 3, 2010. This action is being taken under the Clean Air Act (CAA).