2060-AI43 201004 Unified Agenda of Federal Regulatory and Deregulatory Actions 2060 Air and Radiation AR 2000 Environmental Protection Agency EPA Review of the National Ambient Air Quality Standards for Carbon Monoxide Economically Significant Previously Published in The Unified Agenda Proposed Rule Stage Yes No 40 CFR 50 42 USC 7408 42 USC 7409 Judicial NPRM 10/28/2010 US District Court Northern District of CA, San Francisco Division 5/5/08. Judicial Final 05/13/2011 US District Court Northern District of CA, San Francisco Division 5/5/08. No NPRM 11/00/2010 Final Action 05/00/2011 SAN No. 4266; EPA Docket information: EPA-HQ-OAR-2008-0015. No No Federal Local State Tribal No No www.epa.gov/ttn/naaqs/standards/co/s_co_index.html No No Ines Pagan 2060 Office of Air and Radiation OAR 919 541-5469 pagan.ines@epa.gov C504-06, RTP NC 27711 Deirdre Murphy 2060 Office of Air and Radiation OAR 919 541-0729 919 541-0840 murphy.deirdre@epa.gov C539-02, Research Triangle Park NC 27709