id,agency_id,docket_id,title,document_type,subtype,posted_date,posted_year,posted_month,comment_start_date,comment_end_date,last_modified,fr_doc_num,open_for_comment,withdrawn,object_id
EPA-R08-OAR-2010-0285-0047,EPA,EPA-R08-OAR-2010-0285,"September 10, 2010, Letter from State of Colorado Executive Director of Colorado Department of Public Health and Environment, Martha E. Rudolph, to Region 8 EPA Regional Administrator, James B. Martin, on withdrawal of Ambient Air Quality Standards regarding mobile source emission budgets and Regulation 3, Part C, regarding revisions to operating permit program.",Supporting & Related Material,Letter,2011-08-05T04:00:00Z,2011,8,,,2011-08-05T15:00:00Z,,0,0,0900006480b53b8e
EPA-R08-OAR-2010-0285-0046,EPA,EPA-R08-OAR-2010-0285,Approvals and Promulgations of State Implementation Plans: State of Colorado; Attainment Demonstration for 1997 8-Hour Ozone Standard and Approval of Related Revisions,Rule,,2011-08-05T04:00:00Z,2011,8,2011-08-05T04:00:00Z,,2011-08-05T14:41:47Z,2011-19807,0,0,0900006480ed7cd5
EPA-R08-OAR-2010-0285-0045,EPA,EPA-R08-OAR-2010-0285,Memorandum: Environ to Denver Regional Air Quality Council: Denver Final 2010 Ozone Attainment Demonstration Modeling using Correct Point Source Locations.,Supporting & Related Material,"Letter, Memorandum, Email",2011-01-20T05:00:00Z,2011,1,,,2011-01-20T16:19:13Z,,0,0,0900006480bce0c0