Fact Sheet — Final Area Designations for the National Ambient Air Quality Standards for Ozone Established in 2015 ACTIONS • On April 30, 2018, the U.S. Environmental Protection Agency (EPA) completed additional area designations for most of the remaining portions of the United States. EPA has designated areas as: o "nonattainment" - not meeting the standards (51 areas in 22 states and the District of Columbia and including two tribal areas designated separately from the surrounding states), o "unclassifiable" - available monitoring data is not sufficient to make a determination (1 area), or o "attainment/unclassifiable" - meeting the standard and not contributing to a violation of the standard (all remaining areas addressed in this final rule). The table at the end of this fact sheet provides details for each area. • This final rule does not designate eight counties in the San Antonio, Texas area. EPA will complete designations for these counties by July 17, 2018. • The Clean Air Act directs that ozone nonattainment areas will be classified based on the severity of their air quality problem at the time of designation. Classifications range from "Marginal" to "Extreme." As part of this action, each area is classified area based on air quality monitoring data. In addition, five areas in California are voluntarily designated to a higher classification. • These final designations will take effect 60 days after the notice is published in the Federal Register. Nonattainment Area Requirements • The Clean Air Act requires air agencies to take steps to control ozone pollution in nonattainment areas. Those steps may include stricter controls on industrial facilities. • State and local governments detail these steps in plans that demonstrate how they will meet the ozone standards. Those plans are known as state implementation plans (SIPs). Areas classified as Marginal are not required to submit plans demonstrating how they will meet the ozone standards. For all other nonattainment areas, states have three to four years after the effective date of final designations to develop and submit required SIP elements to EPA, depending on area classification. • Once designated, nonattainment areas are subject to Nonattainment New Source Review requirements. New Source Review is a permitting program for industrial facilities to ensure that new and modified sources of pollution do not impede progress toward cleaner air. ------- • Nonattainment areas are required to meet the standard as quickly as possible, but no later than the maximum attainment date associated with each classification. o Marginal - 3 years from effective date of designation; o Moderate - 6 years from effective date of designation; o Serious - 9 years from effective date of designation; o Severe -15 years (or 17 years) from effective date of designation; and o Extreme - 20 years from effective date of designation. • EPA must determine whether the area has attained the standard by the applicable attainment date. If EPA determines that an area failed to meet the standard by the attainment date, EPA must reclassify the area to a higher classification. EPA must establish a date for the state to submit a new SIP demonstrating attainment by the attainment date for the new classification. BACKGROUND • The Clean Air Act requires EPA to issue designations after the agency sets a new National Ambient Air Quality Standard or revises an existing standard. • On October 1, 2015, EPA strengthened the air quality standards for ozone by establishing a 8-hour standard at a level of 70 parts per billion. On November 6, 2017, EPA designated 85% of the counties in the U.S. as attainment/unclassifiable for the 2015 ozone standards. • EPA will complete area designations for the San Antonio, Texas area by July 17, 2018. FOR MORE INFORMATION • For more information on the designation process for the 2015 ozone standards go to EPA's Web site at: https://www.epa.gov/ozone-desienations. ------- Nonattainment and Unclassifiable Area Designations for the 2015 Ozone Standards - April 30, 2018 State or Tribe Area Name Counties or Areas of Indian Country (p) - partial Designation Classification Arizona Phoenix-Mesa, AZ Gila(p) Maricopa (p) Pinal (p) Nonattainment Marginal Yuma, AZ Yuma (p) Nonattainment Marginal California Amador County, CA Amador Nonattainment Marginal Calaveras County, CA Calaveras Nonattainment Marginal Chico (Butte County), CA Butte Nonattainment Marginal Imperial County, CA Imperial Nonattainment Marginal Kern County (Eastern Kern), CA Kern (p) Nonattainment Moderate Los Angeles-San Bernardino Counties (West Mojave Desert), CA Los Angeles (p) San Bernardino (p) Nonattainment Severe-15 Los Angeles-South Coast Air Basin, CA Los Angeles (p) Orange Riverside (p) San Bernardino (p) Nonattainment Extreme Mariposa County, CA Mariposa Nonattainment Marginal Nevada County (Western part), CA Nevada(p) Nonattainment Moderate Riverside County (Coachella Valley), CA Riverside (p) Nonattainment Severe-15 Sacramento Metro, CA El Dorado (p) Placer (p) Sacramento Solano (p) Sutter (p) Yolo Nonattainment Moderate San Diego County, CA San Diego Nonattainment Moderate San Francisco Bay Area, CA Alameda Contra Costa Marin Napa San Francisco San Mateo Santa Clara Solano (p) Sonoma (p) Nonattainment Marginal ------- State or Tribe Area Name Counties or Areas of Indian Country (p) - partial Designation Classification San Joaquin Valley, CA Fresno Kern(p) Kings Madera Merced San Joaquin Stanislaus Tulare Nonattainment Extreme San Luis Obispo (Eastern part), CA San Luis Obispo (p) Nonattainment Marginal Sutter Buttes, CA Sutter (p) Nonattainment Marginal Tuolumne County, CA Tuolumne Nonattainment Marginal Tuscan Buttes, CA Tehama (p) Nonattainment Marginal Ventura County, CA Ventura (p) Nonattainment Serious Colorado Denver Metro/North Front Range, CO Adams Arapahoe Boulder Broomfield Denver Douglas Jefferson Larimer (p) Weld (p) Nonattainment Marginal Connecticut Greater Connecticut, CT Hartford Litchfield New London Tolland Windham Nonattainment Marginal New York-Northern New Jersey-Long Island, NY-NJ-CT Fairfield Middlesex New Haven Nonattainment Moderate Delaware Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE New Castle Nonattainment Marginal District of Columbia Washington, DC-MD-VA District of Columbia Nonattainment Marginal Florida Jacksonville, FL Duval Unclassifiable ------- State or Tribe Area Name Counties or Areas of Indian Country (p) - partial Designation Classification Georgia Atlanta, GA Bartow Clayton Cobb DeKalb Fulton Gwinnett Henry Nonattainment Marginal Illinois Chicago, IL-IN-WI Cook DuPage Grundy (p) Kane Kendall (p) Lake Will Nonattainment Marginal St. Louis, MO-IL Madison St. Clair Nonattainment Marginal Indiana Chicago, IL-IN-WI Lake (p) Nonattainment Marginal Louisville, KY-IN Clark Floyd Nonattainment Marginal Kentucky Louisville, KY-IN Bullitt Jefferson Oldham Nonattainment Marginal Cincinnati, OH-KY Boone (p) Campbell (p) Kenton(p) Nonattainment Marginal Maryland Baltimore, MD Anne Arundel Baltimore Carroll Harford Howard City of Baltimore Nonattainment Marginal Washington, DC-MD-VA Calvert Charles Frederick Montgomery Prince George's Nonattainment Marginal Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE Cecil Nonattainment Marginal Michigan Allegan, Ml Allegan (p) Nonattainment Marginal Berrien, Ml Berrien Nonattainment Marginal Detroit, Ml Livingston Macomb Monroe Nonattainment Marginal ------- State or Tribe Area Name Counties or Areas of Indian Country (p) - partial Designation Classification Oakland St. Clair Washtenaw Wayne Muskegon, Ml Muskegon (p) Nonattainment Marginal Missouri St. Louis, MO-IL Franklin (p) St. Charles St. Louis City of St. Louis Nonattainment Marginal Morongo Band of Mission Indians Morongo Band of Mission Indians Area of Indian Country Area of Indian Country Nonattainment Serious Nevada Las Vegas, NV Clark (p) Nonattainment Marginal New Jersey New York-Northern New Jersey-Long Island, NY-NJ-CT Bergen Essex Hudson Hunterdon Middlesex Monmouth Morris Passaic Somerset Sussex Union Warren Nonattainment Moderate Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE Atlantic Burlington Camden Cape May Cumberland Gloucester Mercer Ocean Salem Nonattainment Marginal New Mexico Dona Ana County (Sunland Park Area), NM Dona Ana(p) Nonattainment Marginal ------- State or Tribe Area Name Counties or Areas of Indian Country (p) - partial Designation Classification New York New York-Northern New Jersey-Long Island, NY-NJ-CT Bronx Kings Nassau New York Queens Richmond Rockland Suffolk Westchester Nonattainment Moderate Ohio Cincinnati, OH-KY Butler Clermont Hamilton Warren Nonattainment Marginal Cleveland, OH Cuyahoga Geauga Lake Lorain Medina Portage Summit Nonattainment Marginal Columbus, OH Delaware Fairfield Franklin Licking Nonattainment Marginal Pechanga Band of Luiseno Mission Indians Pechanga Band of Luiseno Mission Indians Area of Indian Country Main body of the Pechanga Reservation and Pu'eska Mountain parcel Nonattainment Marginal Pennsylvania Philadelphia-Wilmington- Atlantic City, PA-NJ-MD-DE Bucks Chester Delaware Montgomery Philadelphia Nonattainment Marginal Texas Dallas-Fort Worth, TX Collin Dallas Denton Ellis Johnson Kaufman Parker Tarrant Wise Nonattainment Marginal ------- State or Tribe Area Name Counties or Areas of Indian Country (p) - partial Designation Classification Houston-Galveston-Brazoria, TX Brazoria Chambers Fort Bend Galveston Harris Montgomery Nonattainment Marginal Utah Northern Wasatch Front, UT Salt Lake Davis Weber (p) Tooele (p) Nonattainment Marginal Southern Wasatch Front, UT Utah (p) Nonattainment Marginal Uinta Basin Duchesne(p) Uintah (p) Nonattainment Marginal Virginia Washington, DC-MD-VA Arlington Fairfax Loudoun Prince William Alexandria City Fairfax City Falls Church City Manassas City Manassas Park City Nonattainment Marginal Wisconsin Chicago, IL-IN-WI Kenosha(p) Nonattainment Marginal Door County, Wl Door (p) Nonattainment Marginal Manitowoc County, Wl Manitowoc (p) Nonattainment Marginal Sheboygan County, Wl Sheboygan(p) Nonattainment Marginal Northern Milwaukee/Ozaukee Shoreline, Wl Milwaukee (p) Ozaukee(p) Nonattainment Marginal ------- |