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withdrawn,object_id EPA-R03-OAR-2017-0149-0018,EPA,EPA-R03-OAR-2017-0149,Air Quality State Implementation Plans; Approval and Promulgation: Maryland; 2011 Base Year Inventory for the 2008 8-Hour Ozone National Ambient Air Quality Standard for the Maryland Portion of the Philadelphia-Wilmington-Atlantic City Nonattainment Area,Rule,,2018-03-01T05:00:00Z,2018,3,2018-03-01T05:00:00Z,,2018-03-01T13:21:28Z,2018-04184,0,0,0900006482f7a353