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Area Designations for 2008 Ground-level Ozone Standards

Nonattainment Designations for the 2008 Ozone Standards - Counties by State, April 30, 2012 and May 31, 2012

State Area Name Area Classification 2012 EPA Designated Nonattainment Counties
AR Memphis, TN-MS-AR Marginal Crittenden
AZ Phoenix-Mesa, AZ Marginal Maricopa (p)
Pinal (p)
CA Calaveras County, CA Marginal Calaveras
Chico (Butte County), CA Marginal Butte
Imperial County, CA Marginal Imperial
Kern County (Eastern Kern), CA Marginal Kern (p)
Los Angeles-San Bernardino Counties (West Mojave Desert), CA Severe-15 Los Angeles (p)
San Bernardino (p)
Los Angeles-South Coast Air Basin, CA Extreme Los Angeles (p)
Orange
Riverside (p)
San Bernardino (p)
Mariposa County, CA Marginal Mariposa
Nevada County (Western part), CA Marginal Nevada (p)
Riverside County (Coachella Valley), CA Severe-15 Riverside (p)
Sacramento Metro, CA Severe-15 El Dorado (p)
Placer (p)
Sacramento
Solano (p)
Sutter (p)
Yolo
San Diego County, CA Marginal San Diego
San Francisco Bay Area, CA Marginal Alameda
Contra Costa
Marin
Napa
San Francisco
San Mateo
Santa Clara
Solano (p)
Sonoma (p)
San Joaquin Valley, CA Extreme Fresno
Kern (p)
Kings
Madera
Merced
San Joaquin
Stanislaus
Tulare
San Luis Obispo (Eastern San Luis Obispo), CA Marginal San Luis Obispo (p)
Tuscan Buttes, CA Marginal Tehama (p)
Ventura County, CA Serious Ventura (p)
Morongo Areas of Indian Country (Morongo Band of Mission Indians) Serious Areas of Indian Country
Pechanga Areas of Indian Country (Pechanga Band of Luiseno Mission Indians of the Pechanga Reservation) Moderate Areas of Indian Country
CO Denver-Boulder-Greeley-Ft Collins-Loveland, CO Marginal Adams
Arapahoe
Boulder
Broomfield
Denver
Douglas
Jefferson
Larimer (p)
Weld (p)
CT Greater Connecticut, CT Marginal Hartford
Litchfield
New London
Tolland
Windham
New York-N. New Jersey-Long Island, NY-NJ-CT Marginal Fairfield
Middlesex
New Haven
DC Washington, DC-MD-VA Marginal District of Columbia
DE Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE Marginal New Castle
Seaford, DE Marginal Sussex
GA Atlanta, GA Marginal Bartow
Cherokee
Clayton
Cobb
Coweta
DeKalb
Douglas
Fayette
Forsyth
Fulton
Gwinnett
Henry
Newton
Paulding
Rockdale
IL Chicago-Naperville, IL-IN-WI* Marginal Cook
DuPage
Grundy (p)
Kane
Kendall (p)
Lake
McHenry
Will
St. Louis-St. Charles-Farmington, MO-IL Marginal Madison
Monroe
St. Clair
IN Chicago-Naperville, IL-IN-WI*

Marginal

Lake
Porter
Cincinnati, OH-KY-IN Marginal Dearborn (p)
KY Cincinnati, OH-KY-IN Marginal Boone (p)
Campbell (p)
Kenton (p)
LA Baton Rouge, LA Marginal Ascension
East Baton Rouge
Iberville
Livingston
West Baton Rouge
MA Dukes County, MA Marginal Dukes
MD Baltimore, MD Moderate Anne Arundel
Baltimore
Baltimore City
Carroll
Harford
Howard
Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE Marginal Cecil
Washington, DC-MD-VA Marginal Calvert
Charles
Frederick
Montgomery
Prince George's
MO St. Louis-St. Charles-Farmington, MO-IL Marginal Franklin
Jefferson
St. Charles
St. Louis
St. Louis City
MS Memphis, TN-MS-AR Marginal DeSoto (p)
NC Charlotte-Rock Hill, NC-SC Marginal Cabarrus (p)
Gaston (p)
Iredell (p)
Lincoln (p)
Mecklenburg
Rowan (p)
Union (p)
NJ New York-N. New Jersey-Long Island, NY-NJ-CT Marginal Bergen
Essex
Hudson
Hunterdon
Middlesex
Monmouth
Morris
Passaic
Somerset
Sussex
Union
Warren
Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE Marginal Atlantic
Burlington
Camden
Cape May
Cumberland
Gloucester
Mercer
Ocean
Salem
NY Jamestown, NY Marginal Chautauqua
New York-N. New Jersey-Long Island, NY-NJ-CT Marginal Bronx
Kings
Nassau
New York
Queens
Richmond
Rockland
Suffolk
Westchester
OH Cincinnati, OH-KY-IN Marginal Butler
Clermont
Clinton
Hamilton
Warren
Cleveland-Akron-Lorain, OH Marginal Ashtabula
Cuyahoga
Geauga
Lake
Lorain
Medina
Portage
Summit
Columbus, OH Marginal Delaware
Fairfield
Franklin
Knox
Licking
Madison
PA Allentown-Bethlehem-Easton, PA Marginal Carbon
Lehigh
Northampton
Lancaster, PA Marginal Lancaster
Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE Marginal Bucks
Chester
Delaware
Montgomery
Philadelphia
Pittsburgh-Beaver Valley, PA Marginal Allegheny
Armstrong
Beaver
Butler
Fayette
Washington
Westmoreland
Reading, PA Marginal Berks
SC Charlotte-Rock Hill, NC-SC Marginal York (p)
TN Knoxville, TN Marginal Blount
Anderson (p)
Knox
Memphis, TN-MS-AR Marginal Shelby
TX Dallas-Fort Worth, TX Moderate Collin
Dallas
Denton
Ellis
Johnson
Kaufman
Parker
Rockwall
Tarrant
Wise
Houston-Galveston-Brazoria, TX Marginal Brazoria
Chambers
Fort Bend
Galveston
Harris
Liberty
Montgomery
Waller
VA Washington, DC-MD-VA Marginal Alexandria City
Arlington
Fairfax
Fairfax City
Falls Church City
Loudoun
Manassas City
Manassas Park City
Prince William
WI Chicago-Naperville, IL-IN-WI* Marginal Kenosha (p)
Sheboygan County, WI Marginal Sheboygan
WY Upper Green River Basin Area, WY Marginal Lincoln (p)
Sublette
Sweetwater (p)
Total
26 states,
2 areas of Indian country,
District of Columbia
46 Areas Marginal - 36 areas
Moderate - 3 areas
Serious - 2 areas
Severe 15 - 3 areas
Extreme - 2 areas
192 whole nonattainment counties
40 partial nonattainment counties

*EPA completed area designations for the Chicago-Naperville, IL-IN-WI area on May 31, 2012. All other area designations were completed on April 30, 2012.

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