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withdrawn,object_id PHMSA-2015-0057-0006,PHMSA,PHMSA-2015-0057,U.S. DOT/PHMSA - Gas Detection and Monitoring in Compressor Station Buildings (PS-100),Other,Supplement (SUP),2015-08-28T04:00:00Z,2015,8,2015-08-28T04:00:00Z,,2015-08-28T20:21:00Z,,0,0,0900006481c42cb2 PHMSA-2015-0057-0004,PHMSA,PHMSA-2015-0057,U.S. DOT/PHMSA - Comments from Multiple Submitters (PS-100),Other,Letter(s),2015-02-05T05:00:00Z,2015,2,2015-02-05T05:00:00Z,,2015-02-05T19:39:19Z,,0,0,09000064819f676b PHMSA-2015-0057-0003,PHMSA,PHMSA-2015-0057,U.S. DOT/PHMSA - Comments from Multiple Submitters (PS-100),Other,Letter(s),2015-02-05T05:00:00Z,2015,2,2015-02-05T05:00:00Z,,2015-02-05T19:34:45Z,,0,0,09000064819f6391