documents: EPA-R09-OAR-2010-0491-0029

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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posted_date posted_year posted_month comment_start_date comment_end_date last_modified fr_doc_num open_for_comment withdrawn object_id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-R09-OAR-2010-0491-0029 EPA EPA-R09-OAR-2010-0491 Memorandum from Lydia N. Wegman, Director, EPA Air Quality Strategies and Standards Division, “Additional Guidance On Defining Area Boundaries for PM-2.5 Designations,” February 12, 2004. Supporting & Related Material Other 2010-10-04T04:00:00Z 2010 10     2010-10-04T14:42:53Z   0 0 0900006480b620e1

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