Proposed implementation of the 2008 national ambient air quality standards for ozone. Epa ttn naaqs ozone implementation planning documents. A cumulative standard called w126 in the range of 7 to 15 ppmhours air quality division ozone standard revisions and hgb ozone update marissa gonzales august. Rather, naaqs rationbased standards for ambient outdoor pollution. Guidance on air quality designations for the 8hour ozone naaqs. 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. Kiewit epa rules to reduce the level of naaqs for ozone. Nonattainment area classifications approach, attainment deadlines and revocation of the 1997 ozone standards for transportation conformity purposes february 14, 2012. Basic information and fact sheets regarding 2015 revision to 2008 ozone national ambient air quality standards naaqs interactive map showing the progress states, tribes, and epa have made to meet the 1997 groundlevel ozone standards. In february 2006, epa released the final document, air quality criteria for ozone and other photochemical oxidants. Pete olson rtx and bob latta roh and senator john thune rsd, respectively, were introduced on september 17, 2014. Final rule highlights epas final rule reduced the primary and secondary ozone naaqs from its current level of 75 ppb as an eighthour average to a level of 70 ppb.
This date, july 20, 20, coincides with the end of the conformity grace period for the 2008 ozone naaqs. Implementing the 2008 ozone national ambient air quality. All nonattainment areas green book including 8hour ozone nonattainment areas. Current design values are current as of the posted green book date. Nonattainment areas for the 1997 ozone standards revoked. Epa452r08003 march 2008 final ozone naaqs regulatory impact analysis u. Epa doj filed a rehearing petition on april 23, 2018 seeking. Epa home green book 8hour ozone 1997 designated area stateareacounty report naaqs revoked 8hour ozone 1997 designated area stateareacounty report naaqs revoked data is current as of march 31, 2020 view notes. Check the air quality design value site for design value updates. Environmental protection agency epa under the clean air act. Select one of the naaqs below to view information about designated nonattainment areas. Environmental protection agency epa further strengthened the national air quality standards for groundlevel ozone, setting a design value level of 0.
Environmental protection agency office of air quality planning and standards health and environmental impacts division air benefit and cost group c43902 research triangle park, north carolina. The ozone layer found high in the upper atmosphere the stratosphere shields us from much. National ambient air quality standards naaqs for ozone o 3 general background. Epa no longer updates this information, but it may be useful as a reference or resource. Other rules promulgated since 2011 notably the tier 3 auto emission and. Epa region 9 1hour ozone naaqs designations display field. Ozone designation and classification information us epa. Tropospheric or surfacelevel ozone o3 is one of six major air pollutants regulated by national ambient air quality standards naaqs under the u. The national ambient air quality standard naaqs for groundlevel ozone is an outdoor air regulation established by the u. The epa green book provides detailed information about area national ambient air quality standards naaqs designations, classifications and nonattainment status. Naaqs statutory requirements do not directly limit emissions. Revised 8hour ozone 2015 standard naaqs notices national ambient air quality standards for ozone december 17, 2014 see 79 fr 75234.
Green book 1hour ozone 1979 area information naaqs revoked. Epa home green book 8hour ozone 1997 nonattainment area map naaqs revoked view pdf map that can be zoomed. These standards are known as national ambient air quality standards naaqs. As described in detail below see implementation of the 2015 standards, under the caa. The epa designates nonattainment areas at its green book web site.
Epa sets national ambient air quality standards naaqs for groundlevel. Green book gis download nonattainment areas for criteria. 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. Environmental protection agency epa further strengthened the national air quality standards naaqs for groundlevel ozone, setting a design value level of 0. Epa has designated all of massachusetts as attainmentunclassifiable for the 2015 ozone naaqs. This page links you to draft documents written by epa staff in the course of planning for implementation of the 1997 8hour ozone standard.
Ozone is one of the six major air pollutants for which epa has issued air quality criteria and established national ambient air quality standards naaqs based on those criteria. The site is intended to make easily available information on both data and policy related to the ozone naaqs. The epa is revising the levels of both standards to 0. The environmental protection agency epa is announcing that a public hearing will be held for the proposed rule titled, implementation of the 2015 national ambient air quality standards for ozone. The pending failure of many regions to meet the 1977 deadline for the national ambient air quality standards for ozone presented epa with the prospect of imposing construction bans on new sources in the noncomplying areas. See public comments and testimony regarding the united states environmental protection agency s epa proposed updates to the national air quality standards naaqs below. The court ordered epa to finalize proposed revisions to the rule by october 1, 2015. Learn about air quality in massachusetts relative to the national ambient air quality standards naaqs. Green book 8hour ozone 2015 area information this section provides detailed information about designations, classifications and the nonattainment area status for the 8hour ozone 2015 national ambient air quality standards naaqs. One topic covered is the regional transport of ozone rto and ozone precursors including nitrogen oxides or nox. For additional information on nonattainment areas across the country for the six naaqs pollutants, visit the epa s green book. The american petroleum institute api supports the option epa included in the proposal to retain the current primary national ambient air quality standards naaqs for ozone at the level of 0. In such a case, epa would issue guidance regarding designations for that revised naaqs. On july 10, 1998 63 fr 37258, epa published the final rule redesignating the san francisco bay area to nonattainment with the federal 1hour ozone naaqs.
National ambient air quality standards for ozone october 26, 2015 see. 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. 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 8hour ozone 1997 naaqs was revoked on april 6, 2015. Naaqs, last shapefile update 1, shapefile containing all designated nonattainment areas, external data files with area status as of green. Toxicology division, texas commission on environmental quality the texas commission on environmental quality tceq strives to protect our states public health and natural resources consistent with sustainable economic development.
Proposed revision of national ambient air quality standards. Information is current as of the green book posted date and is available in reports, maps and data downloads. National ambient air quality standards naaqs for ozone o. Epa ttn naaqs ozone implementation technical resources.
For other naaqs nonattainment areas, see epa s green book. These commonly found air pollutants also known as criteria pollutants are particle pollution or particulate matter pm, groundlevel ozone, carbon monoxide co. The 2015 standard lowered the national ambient air quality standard naaqs for ozone a criteria pollutant from 75 to 70 parts per billion ppb after designating most of the us. Green book attainment status update in 2015, epa established a new naaqs primary ozone standard of 0. Groundlevel ozone is a gas that occurs both naturally and forms due to chemical reactions between nitrogen oxides and volatile organic compounds, which are emitted from industrial facilities, power plants. Oct 01, 2015 the environmental protection agency epa on oct. In this action, the environmental protection agency epa is designating.
Apr 20, 2017 on april 11, 2017, the united states court of appeals for the district of columbia circuit canceled oral argument, which had been scheduled for april 19, in several consolidated cases challenging epas 2015 revision of national ambient air quality standards naaqs for ozone. Naaqs statutory requirements naaqs do not directly limit emissions. Implementing epas 2015 ozone air quality standards. National ambient air quality standards ozone implementation technical resources ozone monitoring season by state ozone monitoring season by state note. Nonattainment area classifications and state implementation plan requirements, which published in the federal register on november 17, 2016.
Sep 14, 2016 on september 7, 2016, the united states environmental protection agency epa issued a final rule updating the crossstate air pollution rule csapr ozone season trading program. Mar 28, 2000 if epa promulgates a revised ozone naaqs in response to a final unappealable court decision regarding the validity of the 8hour standard, epa would then be required to begin the designation process under 107 of the caa for that revised ozone naaqs. Epa home green book 8hour ozone 1997 designated areas by statecountyarea naaqs revoked 8hour ozone 1997 designated areas by statecountyarea naaqs revoked data is current as of march 31, 2020. Designation and naaqs information related to 8hour ozone. Epa issues final naaqs ozone rule at 70 ppb updated. Green book 1hour ozone 1979 area information naaqs. Under the caa, congress mandated that epa establish two types of naaqs for each criteria. Epa updates crossstate air pollution rule for the 2008 ozone. New jersey is required to meet air quality standards established by the united states environmental protection agency usepa. Aug 23, 2011 epa is also reconsidering the 2008 secondary ozone naaqs.
Three layers of the atmosphere are relevant to ozone formation and transport. Trump administration delays enforcement of stricter ozone. 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. Certain states were required to revise their state implementation plan sip measures under epa s nox sip call to ensure. Epa refers to these pollutants as criteria pollutants because they are regulated by using human healthbased andor environmentallybased criteria to set permissible levels. Details about the designations and classifications of previous 1hour ozone nonattainment and maintenance areas can be found here on june 8, 2007, the united states court of appeals vacated the subpart 1 portion of the phase 1 rule court order pdf. State code county code site number state name county name begin month begin day end month end day. Other rules promulgated since 2011 notably the tier 3 auto.
Green book national area and countylevel multipollutant information you may need a pdf reader to view some of the files on this page. Nonattainment areas for criteria pollutants green book us epa. Connecticut department of energy and environmental protection epas designations for the 2015 ozone naaqs january 11, 2018 paul bodner. The map shows the current ozone nonattainment areas that include parts of new jersey. Epa reduces ozone naaqs environmental resource center. Subcommittee for ozone, particulate matter and regional haze. Njdepcleanairnjclean air njnj ozone air quality standards. Epa revoked the 199 7 ozone naaqs for transportation conformity purposes only, and this revocation will occur one year after the effective date of designations of the 2008 ozone naaqs 77 fr 30160. On may 14, 2012, the former subpart 1 nonattainment areas were classified under subpart 2 77 fr 28424 pdf, effective june, 2012. Established by the united states environmental protection agency epa under authority of the clean air act 42 u.
Epa is planning next steps to address interstate ozone transport with respect to the 2015 ozone naaqs and considering any remaining interstate transport obligation for the 2008 ozone naaqs epa plans to share modeling in the fall of 2016 to help inform sip development for the 2015 ozone naaqs. Once a nonattainment area meets the standards, epa designates it as maintenance. Epa designates 2015 70 ppb ozone naaqs nonattainment areas. Counties failing to meet the 8hour ozone naaqs, 199698 note. Nov 21, 2014 ozone is one of the six major air pollutants for which epa has issued air quality criteria and established national ambient air quality standards naaqs based on those criteria. Under the caa, congress mandated that epa establish two types of naaqs for. Epa analyzed the benefits and costs of reducing pollution to meet alternative ozone naaqs standards this is the ria regulatory impact analysis the benefit and cost analysis is required by executive order 12866 the benefit and cost analysis is not used when selecting the proposed ozone standards.
Rather, naaqs are concentrationbased standards for ambient outdoor pollution. Nonattainment areas for criteria pollutants green book. The design value is the 3year average of the annual fourthhighest daily maximum 8hour ozone. Proposed revision of national ambient air quality standards naaqs for ozone 2007 ua white paper from the usda agricult ural air quality task force aaqtf summary and recommendations on july 12, 2007, us epa environmental protection agency proposed revisions of both primary human health and secondary human welfare. 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 for a naaqs. Federal register implementation of the 2015 national. Environmental protection agency epa to establish national air quality standards for six common air pollutants that are found throughout the united states. Substantive rehearing on the courts 1 application of antibacksliding requirements following revocation of the 1997 ozone naaqs and 2. The rule promulgates more stringent ozone season nox budgets in several states. Green book 8hour ozone 2015 area information us epa.
Environmental protection agency epa proposed to strengthen the national ambient air quality standards naaqs for. Ozone designation and classification information nonattainment. Because of the potential cost, various interest groups have lobbied against strengthening the standards. The documents include possible issue topics, status reports, a briefing document, and potential implementation schedules and policy objectives. Epa entered into a consent decree with the petitioners on january 19, 2017, which sets deadlines for epa to complete final actions on sip submittals by various dates ranging from june 2017 to july 2018. 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. Additionally, the epas green book nonattainment areas for criteria pollutants. On april 11, 2017, the united states court of appeals for the district of columbia circuit canceled oral argument, which had been scheduled for april 19, in several consolidated cases challenging epa s 2015 revision of national ambient air quality standards naaqs for ozone. Jun 07, 2017 trump administration delays enforcement of stricter ozone pollution standard an asthma attack cannot be delayed a year, sierra club responds. Naaqs last shapefile update 1 shapefile containing all designated nonattainment areas external data files with area status as of green book posting 2.
858 1467 910 100 1231 1360 46 1037 582 618 1105 154 366 741 1151 1450 220 1354 1417 540 1055 451 801 1420 1032 715 809 498 189 231 331 538 1104 867 619 1398 625 553 1004 428 186 386 607