United States Government Publishing Office publisher pbl distributor dst United States National Archives and Records Administration Office of the Federal Register author aut Government Organization text government publication eng FR Regulatory Information 2013_register executive 2013-01-15 article Part II Rules and Regulations D09002ee1c7fbf8b5 D09002ee1c7fbf9b9 United States Environmental Protection Agency originator org United States Government Agency or Subagency Based on its review of the air quality criteria and the national ambient air quality standards (NAAQS) for particulate matter (PM), the EPA is making revisions to the suite of standards for PM to provide requisite protection of public health and welfare and to make corresponding revisions to the data handling conventions for PM and to the ambient air monitoring, reporting, and network design requirements. The EPA also is making revisions to the prevention of significant deterioration (PSD) permitting program with respect to the NAAQS revisions. With regard to primary (health-based) standards for fine particles (generally referring to particles less than or equal to 2.5 micrometers ([mu]m) in diameter, PM<INF>2.5</INF>), the EPA is revising the annual PM<INF>2.5</INF> standard by lowering the level to 12.0 micrograms per cubic meter ([mu]g/m\3\) so as to provide increased protection against health effects associated with long- and short-term exposures (including premature mortality, increased hospital admissions and emergency department visits, and development of chronic respiratory disease), and to retain the 24-hour PM<INF>2.5</INF> standard at a level of 35 [mu]g/m\3\. The EPA is revising the Air Quality Index (AQI) for PM<INF>2.5</INF> to be consistent with the revised primary PM<INF>2.5</INF> standards. With regard to the primary standard for particles generally less than or equal to 10 [micro]m in diameter (PM<INF>10</INF>), the EPA is retaining the current 24-hour PM<INF>10</INF> standard to continue to provide protection against effects associated with short-term exposure to thoracic coarse particles (i.e., PM<INF>10-2.5</INF>). With regard to the secondary (welfare-based) PM standards, the EPA is generally retaining the current suite of secondary standards (i.e., 24-hour and annual PM<INF>2.5</INF> standards and a 24-hour PM<INF>10</INF> standard). Non-visibility welfare effects are addressed by this suite of secondary standards, and PM-related visibility impairment is addressed by the secondary 24-hour PM<INF>2.5</INF> standard. 78 FR 3086 https://www.govinfo.gov/app/details/FR-2013-01-15/2012-30946 2012-30946 fr15ja13-10 RIN 2060-AO47 6560-50-P EPA-HQ-OAR-2007-0492 FRL-9761-8 https://www.govinfo.gov/app/details/FR-2013-01-15/2012-30946 https://www.govinfo.gov/content/pkg/FR-2013-01-15/html/2012-30946.htm https://www.govinfo.gov/content/pkg/FR-2013-01-15/pdf/2012-30946.pdf Environmental Protection Air Pollution Control Carbon Monoxide Lead Nitrogen Dioxide Ozone Particulate Matter Sulfur Oxides Administrative Practices and Procedures Intergovernmental Relations Incorporation by Reference Administrative Practice and Procedure Reporting and Recordkeeping Requirements 202 p. 3086 3287 78 FR 3086 Title 40 Part 50 40 CFR Part 50 Title 40 Part 51 40 CFR Part 51 Title 40 Part 52 40 CFR Part 52 Title 40 Part 53 40 CFR Part 53 Title 40 Part 58 40 CFR Part 58 RIN 2060-AO47 National Ambient Air Quality Standards for Particulate Matter; Federal Register Vol. 78, Issue RULE 2012-30946 II ENVIRONMENTAL PROTECTION AGENCY 2013-03-18 EPA-HQ-OAR-2007-0492 FRL-9761-8 6560-50-P 2012-30946 Final rule.

Based on its review of the air quality criteria and the national ambient air quality standards (NAAQS) for particulate matter (PM), the EPA is making revisions to the suite of standards for PM to provide requisite protection of public health and welfare and to make corresponding revisions to the data handling conventions for PM and to the ambient air monitoring, reporting, and network design requirements. The EPA also is making revisions to the prevention of significant deterioration (PSD) permitting program with respect to the NAAQS revisions. With regard to primary (health-based) standards for fine particles (generally referring to particles less than or equal to 2.5 micrometers ([mu]m) in diameter, PM<INF>2.5</INF>), the EPA is revising the annual PM<INF>2.5</INF> standard by lowering the level to 12.0 micrograms per cubic meter ([mu]g/m\3\) so as to provide increased protection against health effects associated with long- and short-term exposures (including premature mortality, increased hospital admissions and emergency department visits, and development of chronic respiratory disease), and to retain the 24-hour PM<INF>2.5</INF> standard at a level of 35 [mu]g/m\3\. The EPA is revising the Air Quality Index (AQI) for PM<INF>2.5</INF> to be consistent with the revised primary PM<INF>2.5</INF> standards. With regard to the primary standard for particles generally less than or equal to 10 [micro]m in diameter (PM<INF>10</INF>), the EPA is retaining the current 24-hour PM<INF>10</INF> standard to continue to provide protection against effects associated with short-term exposure to thoracic coarse particles (i.e., PM<INF>10-2.5</INF>). With regard to the secondary (welfare-based) PM standards, the EPA is generally retaining the current suite of secondary standards (i.e., 24-hour and annual PM<INF>2.5</INF> standards and a 24-hour PM<INF>10</INF> standard). Non-visibility welfare effects are addressed by this suite of secondary standards, and PM-related visibility impairment is addressed by the secondary 24-hour PM<INF>2.5</INF> standard.

The final rule is effective on March 18, 2013. Ms. Beth M. Hassett-Sipple, Health and Environmental Impacts Division, Office of Air Quality Planning and Standards, U.S. Environmental Protection Agency, Mail code C504-06, Research Triangle Park, NC 27711; telephone: (919) 541-4605; fax: (919) 541-0237; email: hassett-sipple.beth@epa.gov. 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Table of Contents: AE 2.7: GS 4.107: AE 2.106: KF70.A2 https://www.govinfo.gov/app/details/FR-2013-01-15 P0b002ee183aa92d8 0097-6326 0042-1219 0364-1406 769-004-00000-9 000582072 f:fr15ja13 https://www.govinfo.gov/app/details/FR-2013-01-15 https://www.govinfo.gov/content/pkg/FR-2013-01-15/pdf/FR-2013-01-15.pdf https://www.govinfo.gov/content/pkg/FR-2013-01-15/xml/FR-2013-01-15.xml fdlp 2879 3309 DGPO 2013-01-15 2024-06-03 FR-2013-01-15 machine generated eng FR FR-2013-01-15 78 10