2060-AO24 201010 The Regulatory Plan and the Unified Agenda of Federal Regulatory and Deregulatory Actions 2060 Air and Radiation AR 2000 Environmental Protection Agency EPA Prevention of Significant Deterioration for PM2.5—Increments, Significant Impact Levels, and Significant Monitoring Concentrations Other Significant Previously Published in The Unified Agenda Completed Actions No No 40 CFR 52.21 40 CFR 51.166 42 USC 7410 42 USC 7470-7479 42 USC 7501-7503 42 USC 7601(a)(1) No NPRM 09/21/2007 72 FR 54112 Notice of Extension of Comments 11/20/2007 72 FR 65282 NPRM Comment Period End 01/08/2008 Final Action 10/20/2010 75 FR 64864 EPA publication information: NPRM - http://www.regulations.gov/search/Regs/home.html#documentDetail?R=090000648029651b; EPA Docket information: EPA-HQ-OAR-2006-0605 No No Federal Local State Tribal No No http://www.epa.gov/nsr/ No No Dan DeRoeck 2060 Office of Air and Radiation OAR 919 541-5593 919 541-5509 deroeck.dan@epamail.epa.gov C504-02, Research Triangle Park NC 27711 Chuck Buckler 2060 Office of Air and Radiation OAR 919 541-0873 919 541-5509 buckler.charles@epa.gov C504-03, Research Triangle Park NC 27711