List of Documents Submitted by the State of Colorado
   * December 31, 2012, Letter from Christopher E. Urbina, MD, MPH, Executive Director and Chief Medical Officer, Colorado Department of Public Health and the Environment to Carl Daly, Air Program Director, U.S. EPA Region 8, Denver, CO.  Certification that the states meets the requirements of Clean Air Sections 110(a)(1) and (2) for the 2008 Ozone National Ambient Air Quality Standards.
 
   * State of Colorado Provisions to Meet the Requirements of Section 110(a) (1) and (2) of the Clean Air Act


