documents: EPA-HQ-OAR-2007-0492-10006

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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posted_date posted_year posted_month comment_start_date comment_end_date last_modified fr_doc_num open_for_comment withdrawn object_id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-2007-0492-10006 EPA EPA-HQ-OAR-2007-0492 Letter from Richard A. “Chet” Wayland, Director, Air Quality Assessment Division, U.S. EPA, Office of Air Quality Planning and Standards to Mr. Kurt Blasé, Coarse Particulate Matter Coalition, March 4, 2011 Supporting & Related Material Letter 2012-12-18T05:00:00Z 2012 12     2012-12-18T15:42:25Z   0 0 090000648118c41a

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