documents: EPA-HQ-OAR-2004-0394-2038

Regulatory documents from Regulations.gov including rules, proposed rules, notices, and supporting materials.

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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posted_date posted_year posted_month comment_start_date comment_end_date last_modified fr_doc_num open_for_comment withdrawn object_id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-2004-0394-2038 EPA EPA-HQ-OAR-2004-0394 National Ambient Air Quality Standards for Ozone and Particulate Matter, Proposed Decision; Requirements for Designation of Reference and Equivalent Methods for PM_, and Ambient Air Quality Surveillance for Particulate Matter, Proposed Decision; etc. A-95-58-III-A-2 Proposed Rule Notice of Proposed Rulemaking (NPRM) 2020-07-21T04:00:00Z 2020 7 2020-07-21T04:00:00Z 1997-03-13T04:59:59Z 2020-07-21T20:09:45Z 97-4330 0 0 090000648412578b

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