Environmental Protection Agency
Based on its review of the air quality criteria for oxides of sulfur and the primary national ambient air quality standard (NAAQS) for oxides of sulfur as measured by sulfur dioxide (SO<INF>2</INF>), EPA is proposing to revise the primary SO<INF>2</INF> NAAQS to provide requisite protection of public health with an adequate margin of safety. Specifically, EPA proposes to establish a new 1-hour SO<INF>2</INF> standard within the range of 50-100 parts per billion (ppb), based on the 3-year average of the annual 99th percentile (or 4th highest) of 1-hour daily maximum concentrations. The EPA also proposes to revoke both the existing 24-hour and annual primary SO<INF>2</INF> standards.
Document Headings Document headings vary by document type but may contain the following: the agency or agencies that issued and signed a document the number of the CFR title and the number of each part the document amends, proposes to amend, or is directly related to the agency docket number / agency internal file number the RIN which identifies each regulatory action listed in the Unified Agenda of Federal Regulatory and Deregulatory Actions See the Document Drafting Handbook for more details. Environmental Protection Agency 40 CFR Parts 50, 53, and 58 [EPA-HQ-OAR-2007-0352; FRL-8984-3] RIN 2060-A048 AGENCY: Environmental Protection Agency (EPA). ACTION: Proposed rule. SUMMARY: Based on its review of the air quality criteria for oxides of sulfur and the primary national ambient air quality standard (NAAQS) for oxides of sulfur as measured by sulfur dioxide (SO 2 ), EPA is proposing to revise the primary SO 2 NAAQS to provide requisite protection of public health with an adequate margin of safety. Specifically, EPA proposes to establish a new 1-hour SO 2 standard within the range of 50-100 parts per billion (ppb), based on the 3-year average of the annual 99th percentile (or 4th highest) of 1-hour daily maximum concentrations. The EPA also proposes to revoke both the existing 24-hour and annual primary SO 2 standards. DATES: Comments must be received on or before February 8, 2010. Under the Paperwork Reduction Act, comments on the information collection provisions must be received by OMB on or before January 7, 2010. Public Hearings: A public hearing is scheduled for this proposed rule. The public hearing will be held on January 5, 2010 in Atlanta, Georgia. ADDRESSES: Submit your comments, identified by Docket ID No. EPA-HQ-OAR-2007-0352 by one of the following methods: http://www.regulations.gov : Follow the on-line instructions for submitting comments. E-mail: a-and-r-Docket@epa.gov . Fax: 202-566-9744. Mail: Docket No. EPA-HQ-OAR-2007-0352, Environmental Protecti…
Other Federal Register documents from the same docket.
Denial of the Petitions To Reconsider the Final Rule Promulgating the Primary National Ambient Air Quality Standard for Sulfur Dioxide
Primary National Ambient Air Quality Standard for Sulfur Dioxide
Final Risk and Exposure Assessment Report for Sulfur Dioxide (SO2)
Second Draft Risk and Exposure Assessment Report for Sulfur Dioxide (SO2)
Second Draft Risk and Exposure Assessment Report for Sulfur Dioxide (SO2)
Citation: 74 FR 64810
