WebMar 31, 2024 · Current Nonattainment Counties for All Criteria Pollutants. Data is current as of February 28, 2024. The 8-hour Ozone (1997) standard was revoked on April 6, 2015 and the 1-hour Ozone (1979) standard was revoked on June 15, 2005. The asterisk (*) indicates only a portion of the county is included in the designated nonattainment area … WebNational ambient air quality standards (NAAQS) are air quality standards whose purpose is to protect public health and the environment. The NAAQS are set by EPA for the six …
Air Quality Designations for Particle Pollution US EPA
WebOct 5, 2024 · Indoor air quality is a major concern to businesses, building managers, tenants and employees because it can impact the health, comfort, well being and productivity of building occupants. Most Americans spend up to 90% of their time indoors and many spend most of their working hours in an office environment. WebMay 25, 2024 · Director, U.S. EPA, Office of Air Quality Planning and Standards, to Air Division Directors, U.S. EPA Regions 1–10, titled ‘‘Updated Guidance for Area Designations for the 2010 Primary Sulfur Dioxide National Ambient Air Quality Standard,’’ which contains the factors that EPA evaluated in determining the appropriate sharn coombes vicbar
eCFR :: 40 CFR Part 81 -- Designation of Areas for Air …
WebJan 25, 2024 · Priority areas are geographic sites or regions where air quality is of particular concern. We identify priority areas to allow for a focused effort to improve air quality and engage the community. Once … WebAug 24, 2024 · Subpart B—Designation of Air Quality Control Regions, §§81.11 to 81.275. Subpart C—Section 107 Attainment Status Designations, §§81.300 to 8.356. Subpart D Subpart D—Identification of Mandatory Class I Federal Areas Where Visibility Is an Important Value, §§81.400 to 81.437. Appendix A to Part 81—Air Quality Control … WebMar 19, 2024 · On November 9, 2024, the EPA issued a final rule titled “Approval and Promulgation of Implementation Plans; Designation of Areas for Air Quality Planning Purposes; California; South Coast Moderate Area Plan and Reclassification as Serious Nonattainment for the 2012 PM 2.5 NAAQS.” That publication inadvertently omitted from … population of nigeria africa