Comment submitted by Milan Hazucha PhD, Department of Medicine and Center for Environmental Medicine, Asthma, and Lung Biology, University of North Carolina and Allen S. Lefohn PhD, A.S.L. & Associates
Posted : 12/01/2011     ID ：EPA-HQ-ORD-2011-0050-0024     Agency : EPA

Comment Period Closed
Jan 01,0001 12:00 AM ET

Comment submitted by Daniel S. Greenbaum, President, Health Effects Institute (HEI)
Posted : 01/03/2012     ID ：EPA-HQ-ORD-2011-0050-0028     Agency : EPA

Comment Period Closed
Jan 01,0001 12:00 AM ET

Comment submitted by Ted Steichen, Senior Policy Advisor, Regulatory and Scientific Affairs, American Petroleum Institute or (API)
Posted : 01/03/2012     ID ：EPA-HQ-ORD-2011-0050-0029     Agency : EPA

Comment Period Closed
Jan 01,0001 12:00 AM ET

Comment submitted by Giedrius Ambrozaitis, Alliance of Automobile Manufacturers
Posted : 01/03/2012     ID ：EPA-HQ-ORD-2011-0050-0030     Agency : EPA

Comment Period Closed
Jan 01,0001 12:00 AM ET

Comment submitted by Lucinda Minton Langworthy, Counsel, Hunton & Williams LLP et al. on behalf of Utility Air Regulatory Group
Posted : 01/03/2012     ID ：EPA-HQ-ORD-2011-0050-0031     Agency : EPA

Comment Period Closed
Jan 01,0001 12:00 AM ET

Comment submitted by Allen S. Lefohn and Samuel J. Oltmans, A.S.L. & Associates
Posted : 01/03/2012     ID ：EPA-HQ-ORD-2011-0050-0032     Agency : EPA

Comment Period Closed
Jan 01,0001 12:00 AM ET

Comment submitted by John A Dege Jr., Leader Air Competency, E. I. DuPont de Nemours, Inc. (DuPont)
Posted : 01/05/2012     ID ：EPA-HQ-ORD-2011-0050-0033     Agency : EPA

Comment Period Closed
Jan 01,0001 12:00 AM ET

Comment submitted by J. Dillard
Posted : 01/05/2012     ID ：EPA-HQ-ORD-2011-0050-0034     Agency : EPA

Comment Period Closed
Jan 01,0001 12:00 AM ET

Late public comment submitted by Deborah Shprentz, Consultant, American Lung Association
Posted : 01/05/2012     ID ：EPA-HQ-ORD-2011-0050-0035     Agency : EPA

Comment Period Closed
Jan 01,0001 12:00 AM ET

Late public comment submitted by Dr. Roger O. McClellan, Advisor, Inhalation Toxicology and Human Health Risk Analysis
Posted : 02/02/2012     ID ：EPA-HQ-ORD-2011-0050-0037     Agency : EPA

Comment Period Closed
Jan 01,0001 12:00 AM ET

Late comment submitted by Dr. Roger O. McClellan, Advisor, Inhalation Toxicology and Human Health Risk Analysis
Posted : 02/10/2012     ID ：EPA-HQ-ORD-2011-0050-0038     Agency : EPA

Comment Period Closed
Jan 01,0001 12:00 AM ET