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withdrawn,object_id EPA-HQ-OAR-2011-0816-0002,EPA,EPA-HQ-OAR-2011-0816,"California Air Resources Board (CARB) waiver request cover letter September 27, 2010",Supporting & Related Material,Letter,2011-11-16T05:00:00Z,2011,11,,,2011-11-16T15:30:29Z,,0,0,0900006480f6cdb5 EPA-HQ-OAR-2011-0816-0001,EPA,EPA-HQ-OAR-2011-0816,California State Motor Vehicle Pollution Control Standards; Amendments to the California Heavy-Duty Engine On-Board Diagnostic Regulation; Waiver Request; Opportunity for Public Hearing,Notice,Hearings,2011-11-10T05:00:00Z,2011,11,2011-11-10T05:00:00Z,2012-01-10T04:59:59Z,2011-11-22T20:29:32Z,2011-29168,0,0,0900006480f69b7f