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withdrawn,object_id EPA-HQ-OAR-2012-0486-0001,EPA,EPA-HQ-OAR-2012-0486,Revisions to Ambient Nitrogen Dioxide Monitoring Requirements,Proposed Rule,Notice of Proposed Rulemaking (NPRM),2012-10-19T04:00:00Z,2012,10,2012-10-19T04:00:00Z,2012-11-20T04:59:59Z,2012-12-05T03:02:15Z,2012-25423,0,0,0900006481148667