2060-AO48 201004 Unified Agenda of Federal Regulatory and Deregulatory Actions 2060 Air and Radiation AR 2000 Environmental Protection Agency EPA Review of the Primary National Ambient Air Quality Standard for Sulfur Dioxide Economically Significant Previously Published in The Unified Agenda Final Rule Stage Yes No 40 CFR 50 42 USC 7408 42 USC 7409 Judicial NPRM 11/16/2009 Judicial Final 06/02/2010 Yes NPRM 12/08/2009 74 FR 64810 NPRM Comment Period End 02/08/2010 Final Action 06/00/2010 SAN No. 5163; EPA publication information: NPRM - http://www.epa.gov/ttn/naaqs/standards/so2/fr/20091208p64810.pdf; EPA Docket information: EPA-HQ-OAR-2007-0352. No No Federal Local State Tribal No No www.epa.gov/ttn/naaqs/standards/so2/s_so2_index.html No No Michael Stewart 2060 Office of Air and Radiation OAR 919 541-7524 919 541-0237 stewart.michael@epa.gov C504-06, Research Triangle Park NC 27711 Karen Martin 2060 Office of Air and Radiation OAR 919 541-5274 919 541-0237 Martin.Karen@epamail.epa.gov C504-06, Research Triangle Park NC 27711