federal_register: E8-31305

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document_number title type abstract publication_date pub_year pub_month html_url pdf_url agency_names agency_ids excerpts regulation_id_numbers
E8-31305 Approval and Promulgation of Air Quality Implementation Plans; the Metropolitan Washington Nonattainment Area; Determination of Attainment of the Fine Particle Standard Rule EPA is determining that the Metropolitan Washington, DC-MD-VA nonattainment area for the 1997 fine particle (PM<INF>2.5</INF>) National Ambient Air Quality Standard (NAAQS) has attained the 1997 PM<INF>2.5</INF> NAAQS. 2009-01-12 2009 1 https://www.federalregister.gov/documents/2009/01/12/E8-31305/approval-and-promulgation-of-air-quality-implementation-plans-the-metropolitan-washington https://www.govinfo.gov/content/pkg/FR-2009-01-12/pdf/E8-31305.pdf Environmental Protection Agency 145 EPA is determining that the Metropolitan Washington, DC-MD-VA nonattainment area for the 1997 fine particle (PM<INF>2.5</INF>) National Ambient Air Quality Standard (NAAQS) has attained the 1997 PM<INF>2.5</INF> NAAQS.  

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