National ambient air quality standards naaqs the clean air act, which was last amended in 1990, requires epa to set national ambient air quality standards for pollutants considered harmful to public health and the environment. Epa as polluted under the clean air act is documented in the u. These commonly found air pollutants also known as criteria pollutants are particle pollution or particulate matter pm, groundlevel ozone, carbon monoxide co. For more information on attainment status, visit the epas green book exit the tceq webpage regarding. Information is current as of the green book posted date and is available in reports, maps and data downloads. Epa issues final naaqs rule washington energy report.
Epa issues implementation requirements for 2015 ozone naaqs. Presidential memorandum for the administrator of the. So 2 primary rea plans presentation for the casac bob hetes, stephen graham, nicole hagan march 21, 2017. Last week, epa posted its draft integrated science assessment for particulate matter. This table is intended to provide a listing of designations and classifications for current, active national ambient air quality standards naaqs. The legal consequences of epas disruption of the naaqs. All nonattainment areas green book including 8hour ozone nonattainment areas. Cambria, chester, cumberland, dauphin, delaware, greene p, indiana p.
The clean air act identifies two types of national ambient air quality standards. 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. Dec 29, 2014 on november 25, 2014, the environmental protection agency epa proposed to reduce both the primary and secondary national ambient air quality standards naaqs for groundlevel ozone from 75 parts per billion ppb to within the range of 6570 ppb. Njdepcleanairnjclean air njnj ozone air quality standards.
Us epa nonattainment areas and designationspm10 1987. Understanding the permitting impacts of the proposed ozone naaqs. The 8hour ozone 1997 standard was revoked on april 6, 2015 and the 1hour ozone 1979 standard was revoked on june 15, 2005. Prior to publishing a new monthly green book report, an epa contractor runs a quality assurance check.
Oct 01, 2017 id like to receive the forbes daily dozen newsletter to get the top 12 headlines every morning. Here are answers to some questions about the recent announcement by the u. Naaqs and other caa implementation updates anna marie wood director, air quality policy division. Environmental protection agency epa released a notice accepting public comments on their proposed attainment and nonattainment designations for the 2015 national ambient air quality standards naaqs for ozone. The clean air act requires epa to set national ambient air quality standards naaqs for six criteria pollutants lead, carbon monoxide, sulfur dioxide, nitrous oxides, ozone, and particulate matter.
Current nonattainment counties for all criteria pollutants. A designation is the term epa uses to describe the air quality in a given area for. Polygons in this shapefile indicate areas in indiana designated as nonattainment for ozone and or pm2. New ozone pollution rules take effect over objections from trumps team. Our nations air united states environmental protection agency. Mayor bowser extends public health emergency, stay at home order, and closure of nonessential businesses through may 15. Section 181 of the act required epa to classify each area as a marginal, moderate, serious, severe or extreme ozone nonattainment area. On april 30, 2012, the environmental protection agency epa issued a final rule for the implementation of the 2008 national ambient air quality standards naaqs for groundlevel ozone. These standards, called the national ambient air quality standards naaqs, are a cornerstone of epas mission to achieve and maintain clean air. Some files are rather large and may take a while to load.
That decision set in motion the agencys responsibility to. Epa seeking public comment on designation recommendations. Areas participating in the reformulated gasoline program. 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. The epa office of air quality planning and standards oaqps has set national ambient air quality standards for six principal pollutants, which are called criteria pollutants. Read mayor bowsers presentation on dcs covid19 situational update. Naaqs, the clean air act requires epa to designate areas as attainment meeting, nonattainment not meeting, or unclassifiable insufficient data after. Green book 8hour ozone 1997 area information naaqs revoked. What businesses need to know about national ambient air quality standards and nonattainment the federal clean air act requires u. Recent additions epa science advisory board sab us epa. After grumbling that it intended to resist implementing the revised national ambient air quality standards naaqs for ozone it issued in 2015, in august 2018, the epa informed a federal court that it had decided to uphold and defend the naaqs as they had been promulgated. 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.
The clean air act established two types of national air quality standards. Established by the united states environmental protection agency epa under authority of the clean air act 42 u. Nonattainment and maintenance areas for the current 8hour ozone naaqs obtained from epas green book. For a current list of ozone nonattainment areas, refer to the epa green book. Montana deq air 2017air standards airnonattainment. In 2015, epa established a new naaqs primary ozone standard of 0. While naaqs which have been revoked by the epa do not appear in this table, some. Compliance of austinround rock arr area counties with the national ambient air quality standards naaqs. Environmental protection agency epa is committed to protecting public health by improving air quality and reducing air pollution.
Additionally, the epas green book nonattainment areas for criteria pollutants. Epa home green book 1hour ozone 1979 area information naaqs revoked green book 1hour ozone 1979 area information naaqs revoked this page has been updated and moved to. When a nonattainment area attains the naaqs, epa designates the area as a. State and federal area designations california air resources board. See also ser, chapter 1, federal requirements and chapter 2, state requirements for laws and regulations that apply to all environmental analysis activities the primary laws related to air quality issues are the federal and california clean air acts, federal planning regulations and enabling legislation, u. The proposed regulations largely retain and update the implementing regulations that were promulgated for the 2008 8hour ozone naaqs. Epa ttn naaqs ozone implementation technical resources. In 1997, epa set the national ambient air quality standards naaqs for annual fine particle pm 2. The naaqs are health based and the epa sets two types of standards.
Epas tribal authority rule gives tribes the ability to develop air quality management programs, write. Us epa nonattainment areas and designationsso2 2010 naaqs. The us environmental protection agency has approved texass state implementation plan sip to. Epa also indicated that attainment designations for the remaining counties will be announced at a later date. National ambient air quality standards naaqs, pronounced \naks\ are limits on atmospheric concentration of six pollutants that cause smog, acid rain, and other health hazards. 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. Epa issues ozone naaqs designations while reconsidering. Louisiana nonattainmentmaintenance status for each county. Oct 29, 2018 last june 26 epa posted a call for information asking interested parties to submit information on any adverse public health, welfare, social, economic, or energy effects which may result from various strategies for attainment and maintenance of existing, new, or revised naaqs national ambient air quality standards, e. Epas proposed revisions to the national ambient air quality standard naaqs for ozone donnie redmond ambient monitoring section chief. This annual report presents the trends in the nations air quality, and summarizes the detailed information found at epas airtrends website. The national ambient air quality standards naaqs are the concentrations of.
The primary standards are designed to protect the health of sensitive populations such as asthmatics, children, and the elderly. The 2006 national ambient air quality standards naaqs for particulate matter pm congressional research service summary on october 17, 2006, the environmental protection agency epa published its final revisions to the national ambient air quality standards naaqs for particulate matter particulates, or pm. Designation and naaqs information related to 8hour. The proposed 2015 ozone rule would lower the naaqs for ozone from 75 parts per billion ppb to 70 ppb. Epas monthly green book publication includes a summary of nonattainment areas, taking into account all final redesignation actions published in the federal register. If an area was in nonattainment, but now attains the standard and has an epa. Epa office of air and radiation oar office of air quality planning and standards oaqps web service contains the following state level layers related to nonattainment areas and designations.
Ozone 8hr 1997 standard, ozone 8hr 2008 standard, lead 2008. In addition to the epa, the clean air act is administered by state, tribal, and local agencies, which are responsible for developing local solutions to air quality problems. While naaqs which have been revoked by the epa do not appear in this table, some antibacksliding. National ambient air quality standards naaqs us epa. Epa conformity regulations, and local and air district ordinances and. Nonattainment area classifications approach, attainment deadlines and revocation of the 1997 ozone standards for transportation conformity purposes may 21, 2012 see 77 fr 30160. Compliance of dallasfort worth dfw area counties with the national ambient air quality standards naaqs. Epa proposes implementation regulations for the 2015 ozone. Green book 1hour ozone 1979 area information us epa. Green book 8hour ozone 1997 area information naaqs. Epa proposes update to national ambient air quality standards.
Nonattainment status for each county by year, october 2007. Epa to set national ambient air quality standards for pollutants considered harmful to public health and the environment. Under the clean air act caa, public law 88206, the environmental protection agency epa establishes national ambient air quality standards naaqs for. The united states environmental protection agency s epa green book defines criteria pollutants. The clean air act identifies two types of national ambient air quality. These statecounty reports list the annual nonattainment and maintenance status of each county by designated area name by naaqs. The epa green book provides detailed information about area national ambient air quality standards naaqs designations, classifications and nonattainment. Us epa nonattainment areas and designationsso2 2010 naaqs metadata updated. After setting naaqs, there are several activities required to implement the standard including conducting ambient monitoring to identify areas of the country that exceed naaqs levels, i. Nonattainment area is any area that does not meet or that contributes to ambient air quality in a nearby area that does not meet the national primary or secondary ambient air quality standard naaq for. Areas of the country where air pollution levels of are above a naaqs may be designated by usepa as nonattainment. Nonattainment areas for criteria pollutants green book us epa. For more information on attainment status, visit the epas green book exit the tceq.
For additional information about original designations and attainment status, please refer to the epa s green book. National ambient air quality standards naaqs attainment status. Final national ambient air quality standards for ozone rule signed october 1, 2015 80 fr 65292, revising the primary and secondary 8hour ozone standards to 0. Environmental protection agency epa released a partial list of counties that will not be impacted by the yettobe implemented 2015 national ambient air quality standards naaqs for ozone.
Epa uses six criteria pollutants as indicators of air quality, and has established for each of them a maximum concentration above which adverse effects on human health may occur. Environmental resource information reference guide in. Nonattainment and maintenance areas for the current 8hour ozone naaqs obtained from epa s green book. Epa home green book 8hour ozone 1997 nonattainment area map naaqs revoked view pdf map that can be zoomed. Air quality standard naaqs, the clean air act requires epa to designate areas as. On november 17, 2016, epa proposed regulations in the federal register to establish nonattainment area classification thresholds and implementation requirements for the 8 hour ozone naaqs adopted in 2015. Green book national area and countylevel multipollutant epa. The agency later designated 39 areas including at least part of 208 counties as nonattainment not meeting the standards effective april 5, 2005.
The clean air act, which was last amended in 1990, requires the united states environmental protection agency usepa to set national ambient air quality standards 40 cfr part 50 for pollutants considered harmful to public health and the environment. Christopher frey, distinguished university professor at north carolina state university and chair of the epas clean air scientific advisory committee. Soundsoluonsdelivereduncommonlywell understanding the permitting impacts of the proposed ozone naaqs georgia environmental conference august 27, 2015. Water table refers to a saturated zone in the soil. The map shows the current ozone nonattainment areas that include parts of new jersey. The national ambient air quality standards naaqs for. The purpose of this memorandum is to provide guidance to state and local air pollution control agencies and tribes states and tribes on designating areas as attainmentunclassifiable 1 or nonattainment and the environmental protection agencys epas views on the boundaries for nonattainment areas for the 8hour groundlevel ozone naaqs. The usepa green book provides detailed information about area. The final naaqs rule identifies nonattainment areas, establishes nonattainment parameters and sets compliance deadlines for states to come into. Epa approves texas plan to limit ozoneforming emissions under naaqs.
Epas proposed revisions to the national ambient air. State and federal area designations indicate how each area in california fares in relation to the ambient air quality standards, which. Epa home epa science advisory board sab recent additions recent additions get sab recent additions delivered to your feed reader more about rss news feeds usa. National ambient air quality standards naaqs the clean air act, which was last amended in 1990, requires epa to set national ambient air quality standards 40 cfr part 50 for pollutants considered harmful to public health and the environment.
Each of these proposed changes ties back to former epa administrator. Epa has issued its delayed designations for which areas are attaining the obamaera stricter ozone national ambient air quality standard naaqs and finds that 2,646 of more than 3,100 counties meet the naaqs, meaning they will not have to impose strict new ozone reduction measures for the standard that the trump epa is reconsidering. Epas green book on nonattainment areas for criteria pollutants. Last june 26 epa posted a call for information asking interested parties to submit information on any adverse public health, welfare, social, economic, or energy effects which may result from various strategies for attainment and maintenance of existing, new, or revised naaqs national ambient air quality standards, e. Nonattainment areas for criteria pollutants green book.
The design value is the annual arithmetic mean concentrations, averaged over 3 years. 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 additional information on nonattainment areas across the country for the six naaqs pollutants, visit the epas green book. Revised 8hour ozone 2008 standard naaqs notices final implementation of the 2008 national ambient air quality standards for ozone. Guidance on air quality designations for the 8hour. Environmental protection agency regarding a proposed revision to the national ambient air quality standard naaqs for ozone from dr. Epa approves texas plan to limit ozoneforming emissions. Select one of the naaqs below to view information about designated. Applicable authorities and regulations take precedence over guidance material and should be consulted as necessary to achieve full compliance. Improve air quality by implementing pollution control. New ozone pollution rules take effect over objections from. Estimates of the upper limit are based mainly on observations of the water table at selected sites and on evidence of a saturated zone, namely grayish colors redoximorphic features in the soil. The following files may be viewed using adobe acrobat.
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