Under the caa, congress mandated that epa establish two. Nonattainment areas for criteria pollutants green book. All nonattainment areas green book including 8hour ozone nonattainment areas. Green book 1hour ozone 1979 area information naaqs revoked this section provides detailed information about designations, classifications and the status of the nonattainment areas at the time of the 1hour ozone 1979 national ambient air quality standards naaqs revocation. For additional information about original designations and attainment status, please refer to the epas green book. Green book pm10 1987 area information this section provides detailed information about designations, classifications and the nonattainment area status for the pm10 1987 national ambient air quality standards naaqs.
The epa green book provides detailed information about area naaqs national ambient air quality standards designations, classifications and nonattainment status. The rule sets more stringent standards, lowering both the primary healthbased and secondary welfarebased standards from the current 75 parts per billion ppb to 70 ppb. National ambient air quality standards naaqs for six common air pollutants. Epa maintains a list of nonattainment areas for all six principal pollutants on. The levels set by epa are known as national ambient air quality standards naaqs. Epa454r05001 emissions inventory guidance for implementation of ozone and particulate matter national ambient air quality standards naaqs and regional haze regulations issued by. Under the caa, congress mandated that epa establish two types of naaqs for each criteria pollutant a primary naaqs, which must protect public health with. For additional information on nonattainment areas across the country for the six naaqs pollutants, visit the epas green book. The most significant uncertainties currently exist in the implementation of naaqs for particulate matter pm. National ambient air quality standards ozone naaqs nonattainment consequences so 2 naaqs 2. It is merely informative and does not contain requirements necessary.
Following these faqs is a chart that shows where each state currently stands. The epa green book provides detailed information about area national ambient air quality standards naaqs designations, classifications and nonattainment status. The clean air act requires the environmental protection agency epa to set the national ambient air quality standards for pollutants considered harmful to public health and the environment. Green book carbon monoxide 1971 area information this section provides detailed information about nonattainment area designations for the carbon monoxide 1971 national ambient air quality standards naaqs. Nonattainment not meeting the standards or contributing to a nearby area that does not meet the standards. Current nonattainment counties for all criteria pollutants. Californias strict emissions standards, primarily to obtain the additional pollution reductions needed to comply with national ambient air quality standards naaqs. Green book national area and countylevel multipollutant epa. So 2 primary rea plans presentation for the casac bob hetes, stephen graham, nicole hagan march 21, 2017. Federal register notices related to 8hour ozone 1997 designations and classifications naaqs revoked data is current as of march 31, 2020 ordered by category click on the fr link to view the federal register notice the 1997 8hour ozone naaqs was revoked effective april 6. Revised 8hour ozone 2015 standard naaqs notices national ambient air quality standards for ozone december 17, 2014 see 79 fr 75234. In 1997, a standard for fine particulate matter pm2.
Today the environmental protection agency announces new standards for particulate matter pm under the national ambient air quality standards naaqs. These commonly found air pollutants also known as criteria pollutants are particle pollution or particulate matter pm, groundlevel ozone, carbon monoxide co. Dec 01, 2008 the environmental protection agency epa published revisions to the clean air act caa national ambient air quality standards naaqs for particulate matter particulates, or pm on october 17, 2006. Environmental protection agency epa makes final determinations called designations as to whether states meet the national ambient air quality standards epa publishes these determinations in the federal register and they are contained in the code of federal regulations cfr. This page provides links to criteria pollutant national ambient air quality standards naaqs nonattainment area and county information based on data in the green book. Designation and naaqs information related to so2 2010. Environmental protection agency research triangle park, nc 27711 august 2005. Secondary standards provide public welfare protection, including protection against.
Epa ttn naaqs ozone implementation technical resources. Nonattainment areas for criteria pollutants green book us epa. Naaqs statutory requirements naaqs do not directly limit emissions. Green book 8hour ozone 1997 area information naaqs. Epa sets both an annual and a 24hour standard for fine particles. The data is available in xbase dbf and spreadsheet xls formats. Rather, naaqs are concentrationbased standards for ambient outdoor pollution. National air quality and emission trends report special. Designation and naaqs information related to 8hour. As described in detail below see implementation of the 2015 standards, under the caa.
State and federal area designations california air. On october 1, 2015, the environmental protection agency epa finalized revisions to the national ambient air quality standards naaqs for groundlevel ozone. In 2012, epa strengthened the national ambient air quality standards naaqs for annual fine particle pm 2. Green book national area and countylevel multipollutant information.
Extension of deadline for promulgating designations for the 2010 primary sulfur dioxide naaqs august 3, 2012 see 77 fr 46295. Epa the green book so2 nonattainment areas 2010 standard. The agency later designated 9 areas as nonattainment not meeting the standards effective april 15, 2015. Air quality designations for the 2006 24hour fine particle naaqs 2006 24hour pm 2. Aug 31, 2011 national ambient air quality standards. As described in detail below see implementation of the 2015 standards.
Nonattainment areas for criteria pollutants green book the epa green book provides detailed information about area national ambient air quality standards naaqs designations, classifications and nonattainment status. For other naaqs nonattainment areas, see epas green book. National ambient air quality standards naaqs, pronounced \naks\ are standards for harmful pollutants. Help attainment areas ensure continued health protection better position areas to remain in attainment efficiently direct available resources toward actions to address ozone and pm. This table is intended to provide a listing of designations and classifications for current, active national ambient air quality standards naaqs. The primary standards are designed to protect the health of sensitive populations such as asthmatics, children, and the elderly. Epa region 4 regulatory update mecklenburg county annual air quality forum charlotte, nc november 21, 2019 ken mitchell, ph. Although the impacts of this pollutant on health are well characterized, less is known whether the air pollution standards have.
Epa home green book 1hour ozone 1979 area information naaqs revoked green book 1hour ozone 1979 area information naaqs revoked this. Emissions inventory group emissions, monitoring and analysis division office of air quality planning and standards u. Rather, naaqs rationbased standards for ambient outdoor pollution. Naaqs designations, classifications, and nonattainment status. Once a nonattainment area meets the standards, epa will designate it as maintenance.
Environmental protection agency epa announced its proposal to retain, without changes, the national ambient air quality standards naaqs for particulate matter pm including both fine particles pm2. The agency later designated 39 areas including at least part of 208 counties as nonattainment not meeting the standards effective april 5, 2005. Emissions inventory guidance for implementation of. Secondary standards provide public welfare protection, including protection against decreased visibility and damage to animals, crops, vegetation, and buildings. This table is intended to provide a listing of designations and classifications for current, active naaqs. Naaqs statutory requirements do not directly limit emissions. Njdepcleanairnjclean air njnj ozone air quality standards. The epa measures, track, report and regulates ground level ambient ozone levels in large cities throughout the united states. Compliance of san antonio area counties with the national ambient air quality standards naaqs. Designation and naaqs information related to 8hour ozone. The epa internet green book system contains clean air act nonattainment area and county information for criteria pollutants. Areas of the country where air pollution levels of are above a naaqs may be designated by usepa as nonattainment. Nonattainment area classifications approach, attainment deadlines and revocation of the 1997 ozone standards for transportation conformity purposes february 14, 2012 see 77 fr 8197. While naaqs which have been revoked by the epa do not appear in this table.
Information is current as of the green book posted date and is available in reports, maps and data downloads. Will my state adopt californias offroad engine emission standards. The naaqs are health based and the epa sets two types of standards. The levels set by epa are known as national ambient air quality standards.
Final rule national ambient air quality standards for ozone october 26, 2015. Unclassifiable available monitoring data is not sufficient to make a determination. Cambria, chester, cumberland, dauphin, delaware, greene p, indiana p. The 1997 naaqs for pm introduced new standards for pm less than 2.
The epa has set national ambient air quality standards for six principal pollutants, which are called criteria air pollutants. Environmental protection agency epa to establish national air quality standards for six common air pollutants that are found throughout the united states. Louisiana nonattainmentmaintenance status for each county. Designation and naaqs information related to 8hour ozone 2015. Epa s revised particulate matter standards todays action. Environmental protection agency epa has established national ambient air quality standards naaqs. Green book 1hour ozone 1979 area information naaqs. National ambient air quality standards for ozone october 26, 2015 see. Utahair common air pollutants utah department of health.
For more information on attainment status, visit the epas green book exit the tceq. The 8hour ozone 1997 standard was revoked on april 6, 2015 and the 1hour ozone 1979 standard was revoked on june 15, 2005. Epa proposes retaining current naaqs for particulate. The site is intended to make easily available information on both data and policy related to the ozone naaqs. In 1997, epa set the national ambient air quality standards naaqs for annual fine particle pm 2. Established by the united states environmental protection agency epa under authority of the clean air act 42 u.
The naaqs were set at 15 gm3 for the annual standard and 65 gm3 for the 24hour. Additionally, the epas green book nonattainment areas for criteria pollutants. Epa refers to these pollutants as criteria pollutants because they are. The national ambient air quality standards naaqs are the concentrations. This web site contains a variety of information related to several aspects of the ozone national ambient air quality standard naaqs attainment effort. The map shows the current ozone nonattainment areas that include parts of new jersey. National ambient air quality standards naaqs, pronounced \naks\ are limits on.
Chapter criteria pollutants national trends this chapter presents national and regional trends for each of the six criteria pollutants for which the u. While naaqs which have been revoked by the epa do not appear in this table, some antibacksliding obligations may continue to apply for revoked standards. Ambient air quality has been steadily improving since promulgation of national ambient air quality standards naaqs by epa in accordance with the clean air act. The clean air act requires the epa to set us national ambient air quality standards naaqs for the six caps. Air quality designations for the 2010 sulfur dioxide so 2 primary naaqs august 5, 20 see 78 fr 47191. Epas 2015 revision congressional research service that the administrator is to set the primary standard at a level requisite to protect public health, allowing an adequate margin of safety. Epa proposes retaining current naaqs for particulate matter. Epas actions leading up to and following promulgation of the 2006 standard have been the subject of considerable congressional oversight. Current pm naaqs implementation activities center on the naaqs promulgated in 1997 and the upcoming 2006 naaqs promulgation. For additional information about original designations and attainment status, please refer to the epa s green book. The us environmental protection agency epa is proposing to retain, without changes, the national ambient air quality standards naaqs for particulate matter pm including both fine particles pm 2. National ambient air quality standards naaqs were set across the united states in the clean air act of 1970.
May 17, 2018 the clean air act requires epa to issue designations after a new or revised naaqs is set. Learn about clean air act nonattainment area and county information for criteria pollutants. The federal clean air act requires the united states environmental protection agency usepa to set national ambient air quality standards naaqs for six common air pollutants. Proposed implementation of the 2008 national ambient air quality standards for ozone. National ambient air quality standards bad river tribe.
Air quality designations for the 2010 sulfur dioxide so 2 primary naaqs round 2 july 12, 2016 see 81 fr. The usepas ord calculated a threeyear average 2004 2006 using the values for ozone number of days with the maximum 8hour average above the national ambient air quality standards naaqs and pm 2. Jul 24, 2009 following are answers to the most frequently asked questions about states likely to adopt californias offroad engine emission standards. Epa lowered the federal 8hour primary and secondary ozone standard from 0. Epa refers to these pollutants as criteria pollutants because they are regulated by using human healthbased andor environmentallybased criteria to set permissible levels. Will my state adopt californias offroad engine emission. The design value is the annual arithmetic mean concentrations, averaged over 3 years. In 2015, epa established a new naaqs primary ozone standard of 0. This report is a summary of the population living in an area that is in nonattainment for at least one of the national ambient air quality standards naaqs.
This section provides detailed information about designations, classifications and the status of the nonattainment areas at the time of the 8hour ozone 1997 national ambient air quality standards naaqs revocation on april 6, 2015. State and federal area designations california air resources board. Epa groundlevel ozone 2015 naaqs regulatory actions website. Epa home green book current nonattainment counties for all criteria pollutants current nonattainment counties for all criteria pollutants data is current as of march 31, 2020 the 8hour ozone 1997 standard was revoked on april 6, 2015 and the 1hour ozone 1979 standard was revoked on june 15, 2005. State and federal area designations indicate how each area in california fares in relation to the ambient air quality standards, which identify outdoor pollutant levels considered safe for the public. The epa green book provides detailed information about area national ambient air quality standards naaqs designations, classifications and nonattainment. To view a list of areas designated nonattainment, see epa s green book site. Where applicable, links to green book reports that contain information similar to the exported data are listed. Q1 which states are currently or previously in nonattainment of the pm2. Under the caa, congress mandated that epa establish two types of naaqs for each criteria pollutant. Environmental protection agency 1200 pennsylvania avenue, nw washington, dc 20460 subject. Green book 8hour ozone 1997 area information naaqs revoked. The usepa finalized attainmentnonattainment designations for the 1997 8hour ozone naaqs on june 15, 2004. More information on the 2015 standard, including a number of fact sheets and the u.
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