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withdrawn,object_id PHMSA-2011-0023-0021,PHMSA,PHMSA-2011-0023,Interstate Natural Gas Association of America - Letter,Other,Acknowledgement Letter/Receipt,2011-12-27T05:00:00Z,2011,12,2011-12-27T05:00:00Z,,2013-08-11T04:49:27Z,,0,0,0900006480f882b1 PHMSA-2011-0023-0008,PHMSA,PHMSA-2011-0023,Pipeline Safety: Safety of Gas Transmission Pipelines,Proposed Rule,Advance Notice of Proposed Rulemaking (ANPRM),2011-11-16T05:00:00Z,2011,11,2011-11-16T05:00:00Z,2012-01-21T04:59:59Z,2024-11-07T22:42:39Z,2011-29497,1,0,0900006480f6d746 PHMSA-2011-0023-0004,PHMSA,PHMSA-2011-0023,Interstate Natural Gas Association of America's & American Gas Association's,Supporting & Related Material,Supplement,2011-09-28T04:00:00Z,2011,9,,,2011-09-28T18:48:47Z,,0,0,0900006480f1526d PHMSA-2011-0023-0003,PHMSA,PHMSA-2011-0023,Texas Pipeline Association - Request for Extension,Supporting & Related Material,Supplement,2011-09-28T04:00:00Z,2011,9,,,2011-09-28T18:28:00Z,,0,0,0900006480f4069f PHMSA-2011-0023-0002,PHMSA,PHMSA-2011-0023,The Interstate Natural Gas Association of America and the American Gas Association - Request,Supporting & Related Material,Supplement,2011-09-19T04:00:00Z,2011,9,,,2011-09-19T14:15:00Z,,0,0,0900006480f184ce PHMSA-2011-0023-0001,PHMSA,PHMSA-2011-0023,Pipeline Safety: Gas Transmission Pipelines,Proposed Rule,Advance Notice of Proposed Rulemaking (ANPRM),2011-08-25T04:00:00Z,2011,8,2011-08-25T04:00:00Z,2011-12-03T04:59:59Z,2016-07-20T01:00:25Z,2011-21753,0,0,0900006480eee3f9