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Air Quality Designations for the 2010 Sulfur Dioxide (SO2) Primary NAAQS -Round 2 (Final)
Jul. 12, 2016
This rule establishes the initial air quality designations for certain areas in the United States (U.S.) for the 2010 primary sulfur dioxide (SO2) National Ambient Air Quality Standard (NAAQS). The EPA is designating the areas as either nonattainment, unclassifiable/attainment, or unclassifiable, based on whether the areas do not meet the NAAQS or contribute to a nearby area that does not meet the NAAQS; meet the NAAQS; or cannot be classified on the basis of available information as meeting or not meeting the NAAQS, respectively. The designations are based on the weight of evidence for each area, including available air quality monitoring data and air quality modeling. This is the second round of area designations for the 2010 SO2 NAAQS. The effective date of this rule is 12 September 2016. POC is Rhea Jones, U.S. EPA, Office of Air Quality Planning and Standards, Air Quality Planning Division, C539-04, Research Triangle Park, NC 27711, tel: 919-541-2940, email: jones.rhea@epa.gov (Federal Register; 12 July 2016 [Rules and Regulations], pages 45039-45055).
 

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