Technology Transfer Network / NAAQS
Ozone Implementation
Ozone Air Quality Data by Area Then County
Note: EPA no longer updates this information, but it may be useful as a reference or resource.Ozone Air Quality Data by Area
Areas Are Listed First
Then Lone Counties Are Listed by State
Report Date: December 1997
Notes: Data are mostly from 1994-96. Some 1993-95 data was used in certain situations(see the TSD). Data for a few areas affected by 1995-97 are included. (See end of this document or the TSD). Design value is in parts per billion (ppb). There is a violation when the expected exceedance rate is greater than 1. A blank indicates the expected exceedance rate is 0. The design value and expected exceedance rate are the highest for the area; therefore, they may come from different monitors.
Design Expected Value Exceedance Area State County ppb Rate Albany-Schenectady-Troy, NY 109 0.3 NY Albany Co 109 0.3 NY Saratoga Co 96 NY Schenectady Co 92 Albuquerque, NM 98 NM Bernalillo Co 98 NM Sandoval Co 94 NM Valencia Co 77 Allentown-Bethlehem-Easton, PA 116 PA Lehigh Co 111 PA Northampton Co 116 Altoona, PA 110 PA Blair Co 110 Appleton-Oshkosh-Neenah, WI 98 0.5 WI Outagamie Co 98 0.5 WI Winnebago Co 96 Asheville, NC 85 NC Buncombe Co 85 Atlanta, GA 147 5.4 Violating GA De Kalb Co 147 3.5 Violating GA Douglas Co 140 3.5 Violating GA Fulton Co 143 5.4 Violating GA Gwinnett Co 123 GA Paulding Co 114 GA Rockdale Co 141 2.0 Violating GA Spalding Co 125 1.4 Violating Atlantic City, NJ 110 NJ Atlantic Co 110 Augusta-Aiken, GA-SC 109 0.3 GA Richmond Co 109 0.3 SC Aiken Co 104 SC Edgefield Co 92 Austin-San Marcos, TX 105 TX Travis Co 105 Baltimore, MD 151 5.1 Violating MD Anne Arundel Co 151 3.7 Violating MD Baltimore Co 130 2.7 Violating MD Carroll Co 115 0.7 MD Harford Co 140 5.1 Violating MD Baltimore city 137 3.9 Violating Bangor, ME 95 ME Penobscot Co 95 Baton Rouge, LA 134 2.4 Violating LA Ascension Par 121 0.3 LA East Baton Rouge Par 134 2.4 Violating LA Iberville Par 132 1.7 Violating LA Livingston Par 116 1.0 LA Pointe Coupee Par 107 LA West Baton Rouge Par 112 Beaumont-Port Arthur, TX 139 2.1 Violating TX Jefferson Co 139 2.1 Violating TX Orange Co 120 0.4 Bellingham, WA 80 WA Whatcom Co 80 Benton Harbor, MI 116 1.0 MI Berrien Co 116 1.0 Biloxi-Gulfport-Pascagoula, MS 113 MS Hancock Co 113 MS Jackson Co 101 Birmingham, AL 132 2.1 Violating AL Jefferson Co 132 2.1 Violating AL Shelby Co 127 1.3 Violating Boston-Lawrence-Worcester (E. MA), MA-NH 128 1.3 Violating MA Barnstable Co 128 1.3 Violating MA Bristol Co 122 1.0 MA Essex Co 119 0.7 MA Middlesex Co 113 0.3 MA Plymouth Co 104 MA Suffolk Co 106 MA Worcester Co 122 0.7 NH Hillsborough Co 106 Brownsville-Harlingen-San Benito, TX 84 TX Cameron Co 84 Buffalo-Niagara Falls, NY 102 NY Erie Co 91 NY Niagara Co 102 Burlington, VT 85 VT Chittenden Co 85 Canton-Massillon, OH 107 0.3 OH Stark Co 107 0.3 Cedar Rapids, IA 74 IA Linn Co 74 Champaign-Urbana, IL 105 IL Champaign Co 105 Charleston-North Charleston, SC 98 SC Berkeley Co 98 SC Charleston Co 93 Charleston, WV 110 WV Kanawha Co 110 Charlotte-Gastonia-Rock Hill, NC-SC 124 1.0 NC Lincoln Co 108 NC Mecklenburg Co 120 1.0 NC Rowan Co 124 1.0 SC York Co 114 Chattanooga, TN-GA 118 0.3 TN Hamilton Co 118 0.3 Chicago-Gary-Kenosha, IL-IN-WI 129 2.4 Violating IL Cook Co 119 1.0 IL Du Page Co 104 IL Kane Co 117 0.3 IL Lake Co 116 1.0 IL McHenry Co 108 IL Will Co 112 0.3 IN Lake Co 117 0.7 IN Porter Co 124 1.0 WI Kenosha Co 129 2.4 Violating Chico-Paradise, CA 97 CA Butte Co 97 Cincinnati-Hamilton, OH-KY-IN 128 1.3 Violating KY Boone Co 113 KY Campbell Co 115 0.3 KY Kenton Co 118 0.7 OH Butler Co 124 1.0 OH Clermont Co 116 0.7 OH Hamilton Co 114 0.3 OH Warren Co 128 1.3 Violating Clarksville-Hopkinsville, TN-KY 103 KY Christian Co 103 Cleveland-Akron, OH 118 0.7 OH Ashtabula Co 105 OH Cuyahoga Co 110 0.7 OH Lake Co 118 0.4 OH Lorain Co 101 OH Medina Co 114 0.3 OH Portage Co 114 OH Summit Co 113 Colorado Springs, CO 79 CO El Paso Co 79 Columbia, SC 104 SC Richland Co 104 Columbus, GA-AL 108 GA Muscogee Co 108 Columbus, OH 113 0.3 OH Franklin Co 107 0.3 OH Licking Co 108 0.3 OH Madison Co 113 0.3 OH Pickaway Co 110 Corpus Christi, TX 115 0.7 TX Nueces Co 115 0.7 Dallas-Fort Worth, TX 139 4.3 Violating TX Collin Co 126 1.6 Violating TX Dallas Co 134 2.4 Violating TX Denton Co 139 4.2 Violating TX Ellis Co 116 TX Tarrant Co 139 4.3 Violating Davenport-Moline-Rock Island, IA-IL 95 IL Rock Island Co 85 IA Scott Co 95 Dayton-Springfield, OH 125 1.1 Violating OH Clark Co 125 1.1 Violating OH Miami Co 110 OH Montgomery Co 115 Daytona Beach, FL 91 FL Volusia Co 91 Decatur, AL 114 AL Lawrence Co 96 AL Morgan Co 114 Decatur, IL 100 IL Macon Co 100 Denver-Boulder-Greeley, CO 107 0.3 CO Adams Co 90 CO Arapahoe Co 101 CO Boulder Co 94 CO Denver Co 95 CO Douglas Co 100 CO Jefferson Co 107 0.3 CO Weld Co 94 Des Moines, IA 84 IA Polk Co 84 Detroit-Ann Arbor-Flint, MI 129 1.3 Violating MI Lenawee Co 104 MI Macomb Co 129 1.3 Violating MI Oakland Co 120 1.0 MI St. Clair Co 129 1.3 Violating MI Washtenaw Co 104 0.5 MI Wayne Co 121 1.0 Duluth-Superior, MN-WI 76 MN St. Louis Co 76 El Paso, TX 134 2.7 Violating TX El Paso Co 134 2.7 Violating Elmira, NY 88 NY Chemung Co 88 Erie, PA 107 PA Erie Co 107 Eugene-Springfield, OR 102 OR Lane Co 102 Evansville-Henderson, IN-KY 114 IN Posey Co 66 IN Vanderburgh Co 114 IN Warrick Co (See Lone County below) 131 1.7 Violating KY Henderson Co 108 Fargo-Moorhead, ND-MN 75 ND Cass Co 75 Fayetteville, NC 106 NC Cumberland Co 106 Flagstaff, AZ-UT 81 AZ Coconino Co 81 Flint, MI 98 MI Genesee Co 98 Florence, AL 102 AL Colbert Co 102 Fort Collins-Loveland, CO 96 CO Larimer Co 96 Fort Myers-Cape Coral, FL 89 FL Lee Co 89 Fort Pierce-Port St. Lucie, FL 82 FL St. Lucie Co 82 Fort Wayne, IN 112 IN Allen Co 112 IN De Kalb Co 82 Grand Rapids, MI 127 1.4 Violating MI Kent Co 127 1.4 Violating MI Ottawa Co 116 0.7 Greater Connecticut, CT 149 3.4 Violating CT Hartford Co 141 2.4 Violating CT Litchfield Co 119 0.7 CT Middlesex Co 140 3.2 Violating CT New Haven Co 149 3.4 Violating CT New London Co 132 2.1 Violating CT Tolland Co 120 1.0 CT Windham Co 137 2.1 Violating Green Bay, WI 107 WI Brown Co 107 Greensboro-Winston Salem-High Point, NC 118 1.0 NC Forsyth Co 118 1.0 NC Guilford Co 111 0.3 Greenville, NC 97 NC Pitt Co 97 Greenville-Spartanburg-Anderson, SC 114 SC Anderson Co 114 SC Cherokee Co 103 SC Pickens Co 107 SC Spartanburg Co 110 Hancock & Waldo Cos, ME 121 0.5 ME Hancock Co 121 0.5 Harrisburg-Lebanon-Carlisle, PA 113 PA Dauphin Co 113 PA Perry Co 103 Hickory-Morganton-Lenoir, NC 95 NC Alexander Co 94 NC Caldwell Co 95 Honolulu, HI 56 HI Honolulu Co 56 Houma, LA 127 1.4 Violating LA Lafourche Par 127 1.4 Violating Houston-Galveston-Brazoria, TX 188 13.9 Violating TX Brazoria Co 144 2.7 Violating TX Galveston Co 182 5.8 Violating TX Harris Co 188 13.9 Violating Huntington-Ashland, WV-KY-OH 122 0.7 KY Boyd Co 122 0.7 KY Greenup Co 121 0.7 OH Lawrence Co 117 0.7 WV Cabell Co 120 0.7 Huntsville, AL 102 AL Madison Co 102 Indianapolis, IN 122 1.0 IN Hamilton Co 116 0.3 IN Hancock Co 122 1.0 IN Madison Co 121 IN Marion Co 115 0.4 Jackson, MS 90 MS Hinds Co 90 MS Madison Co 89 Jacksonville, FL 111 0.4 FL Duval Co 111 0.4 FL St. Johns Co 91 Jamestown, NY 103 NY Chautauqua Co 103 Janesville-Beloit, WI 105 WI Rock Co 105 Johnson City-Kingsport-Bristol, TN-VA 110 TN Sullivan Co 110 Johnstown, PA 109 PA Cambria Co 100 PA Somerset Co 109 Kalamazoo-Battle Creek, MI 102 0.3 MI Kalamazoo Co 102 0.3 Kansas City, MO-KS 124 1.0 Lowest Possible 1995-97 Values 128 1.3 Violating KS Miami Co 100 KS Wyandotte Co 107 0.3 MO Clay Co 124 1.0 Lowest Possible 1995-97 Values 128 1.3 Violating MO Jackson Co 92 MO Platte Co 110 0.3 Kent & Queen Anne's Cos, MD 111 0.3 MD Kent Co 111 0.3 Lowest Possible 1995-97 Values 129 1.7 Violating Knox & Lincoln Cos, ME 111 0.4 ME Knox Co 111 0.4 Knoxville, TN 124 1.0 TN Anderson Co 112 TN Blount Co 124 1.0 TN Knox Co 115 0.3 TN Loudon Co 112 TN Sevier Co 111 Lafayette, LA 107 LA Lafayette Par 107 Lafayette, IN 104 IN Tippecanoe Co 104 Lake Charles, LA 113 0.3 LA Calcasieu Par 113 0.3 Lake Tahoe South Shore, CA 83 CA El Dorado Co 83 Lakeland-Winter Haven, FL 91 FL Polk Co 91 Lancaster, PA 116 0.3 PA Lancaster Co 116 0.3 Lowest Possible 1995-97 Values 125 1.3 Violating Lansing-East Lansing, MI 97 MI Clinton Co 89 MI Ingham Co 97 Laredo, TX 73 TX Webb Co 73 Las Cruces, NM 106 NM Dona Ana Co 106 Las Vegas, NV-AZ 96 NV Clark Co 96 Lawton, OK 92 OK Comanche Co 92 Lewiston-Auburn, ME 98 ME Kennebec Co 98 Lexington, KY 108 KY Fayette Co 108 KY Jessamine Co 99 KY Scott Co 107 Lima, OH 106 OH Allen Co 106 Lincoln, NE 75 NE Lancaster Co 75 Little Rock-North Little Rock, AR 105 AR Pulaski Co 105 Longview-Marshall, TX 130 1.4 Violating TX Gregg Co 130 1.4 Violating Los Angeles South Coast Air Basin, CA 231 78.3 Violating CA Los Angeles Co 223 70.0 Violating CA Orange Co 156 6.0 Violating CA Riverside Co 200 55.3 Violating CA San Bernardino Co 231 78.3 Violating Louisville, KY-IN 132 1.7 Violating IN Clark Co 132 1.7 Violating IN Floyd Co 119 1.0 KY Bullitt Co 115 KY Jefferson Co 121 1.0 KY Oldham Co 109 Madison, WI 96 WI Dane Co 96 Manchester, NH 101 NH Hillsborough Co 101 NH Merrimack Co 95 Mansfield, OH 102 OH Crawford Co 102 McAllen-Edinburg-Mission, TX 64 TX Hidalgo Co 64 Medford-Ashland, OR 97 0.4 OR Jackson Co 97 0.4 Melbourne-Titusville-Palm Bay, FL 86 FL Brevard Co 86 Memphis, TN-AR-MS 128 2.3 Violating AR Crittenden Co 121 0.7 MS De Soto Co 120 1.0 Lowest Possible 1995-97 Values 131 1.3 Violating TN Shelby Co 128 2.3 Violating Miami-Fort Lauderdale-W. Palm Beach, FL 106 0.3 FL Broward Co 103 0.3 FL Dade Co 106 FL Palm Beach Co 89 Milwaukee-Racine, WI 128 2.0 Violating WI Milwaukee Co 128 2.0 Violating WI Ozaukee Co 126 1.3 Violating WI Racine Co 119 1.0 WI Washington Co 102 0.3 WI Waukesha Co 102 Minneapolis-St. Paul, MN-WI 101 MN Anoka Co 101 MN Dakota Co 91 MN Washington Co 98 WI St. Croix Co 87 Mobile, AL 105 AL Mobile Co 105 Monroe, LA 98 LA Ouachita Par 98 Monterey Bay, CA 114 0.3 CA Monterey Co 93 CA San Benito Co 114 0.3 CA Santa Cruz Co 97 Montgomery, AL 102 AL Elmore Co 102 AL Montgomery Co 94 Muskegon, MI 142 2.0 Violating MI Muskegon Co 142 2.0 Violating Nashville, TN 124 0.7 TN Davidson Co 115 0.3 TN Dickson Co 120 TN Rutherford Co 93 TN Sumner Co 124 0.7 TN Williamson Co 106 TN Wilson Co 108 New Orleans, LA 119 1.0 LA Jefferson Par 110 LA Orleans Par 99 LA St. Bernard Par 112 LA St. Charles Par 115 0.7 LA St. James Par 119 1.0 LA St. John The Baptist Pa 114 New York-N. New Jersey-L.Island,NY-NJ-CT-PA 144 4.1 Violating CT Fairfield Co 144 4.1 Violating NJ Bergen Co 121 0.3 NJ Essex Co 115 NJ Hudson Co 120 1.0 NJ Hunterdon Co 113 0.3 NJ Middlesex Co 139 3.5 Violating NJ Monmouth Co 130 2.1 Violating NJ Morris Co 125 1.3 Violating NJ Ocean Co 138 2.8 Violating NJ Union Co 109 0.5 NY Bronx Co 122 1.0 NY Kings Co 131 1.6 Violating NY Queens Co 123 1.2 Violating NY Richmond Co 123 1.0 NY Suffolk Co 131 3.0 Violating NY Westchester Co 124 0.7 Norfolk-Virginia Beach-Newport News, VA-NC 104 VA Hampton city 100 VA Suffolk city 104 Oklahoma City, OK 110 0.4 OK Cleveland Co 101 OK McClain Co 93 OK Oklahoma Co 110 0.4 Omaha, NE-IA 85 NE Douglas Co 85 Orlando, FL 104 FL Orange Co 104 FL Osceola Co 96 FL Seminole Co 92 Owensboro, KY 114 0.3 KY Daviess Co 108 0.3 KY Hancock Co 114 0.3 Paducah, KY 108 KY Livingston Co 108 Parkersburg-Marietta, WV-OH 118 0.3 OH Washington Co 112 0.3 WV Wood Co 118 0.3 Pensacola, FL 117 0.7 FL Escambia Co 117 0.7 Peoria-Pekin, IL 96 IL Peoria Co 96 Philadelphia-Wilmington-Trenton,PA-NJ-DE-MD 139 3.3 Violating DE Kent Co 115 1.1 Violating DE New Castle Co 134 2.4 Violating MD Cecil Co 139 2.1 Violating NJ Camden Co 127 1.7 Violating NJ Cumberland Co 105 0.7 NJ Gloucester Co 125 1.3 Violating NJ Mercer Co 134 3.3 Violating PA Bucks Co 137 2.8 Violating PA Delaware Co 124 1.0 PA Montgomery Co 118 0.4 PA Philadelphia Co 130 2.0 Violating Phoenix-Mesa, AZ 133 6.2 Violating AZ Maricopa Co 133 6.2 Violating Pittsburgh, PA 133 2.7 Violating PA Allegheny Co 133 2.7 Violating PA Beaver Co 107 PA Washington Co 112 PA Westmoreland Co 119 1.1 Violating Portland, ME 126 1.6 Violating ME Cumberland Co 116 0.7 ME Sagadahoc Co 124 1.0 ME York Co 126 1.6 Violating Portland-Vancouver AQMA, OR-WA 111 0.7 OR Clackamas Co 111 0.7 OR Columbia Co 94 WA Clark Co 108 0.3 Portsmouth-Dover-Rochester, NH 130 1.4 Violating NH Rockingham Co 130 1.4 Violating NH Strafford Co 98 Poughkeepsie, NY 125 1.5 Violating NY Dutchess Co 115 0.3 NY Orange Co 115 0.6 NY Putnam Co 125 1.5 Violating Providence-Fall River-Warwick, RI-MA 133 1.4 Violating RI Kent Co 133 1.4 Violating RI Providence Co 120 1.1 Violating Provo-Orem, UT 105 UT Utah Co 105 Raleigh-Durham-Chapel Hill, NC 115 NC Chatham Co 102 NC Durham Co 103 NC Franklin Co 105 NC Granville Co 115 NC Johnston Co 104 NC Wake Co 107 Reading, PA 114 0.3 PA Berks Co 114 0.3 Redding, CA 111 CA Shasta Co 111 Reno, NV 94 NV Washoe Co 94 Richmond-Petersburg, VA 116 0.7 VA Charles City Co 104 VA Chesterfield Co 107 0.3 VA Hanover Co 116 0.7 VA Henrico Co 108 0.3 Roanoke, VA 98 VA Roanoke Co 98 Rochester, NY 102 NY Monroe Co 102 NY Wayne Co 102 Rockford, IL 101 IL Winnebago Co 101 Rocky Mount, NC 91 NC Edgecombe Co 91 Sacramento-Yolo, CA 146 7.4 Violating CA El Dorado Co 130 2.0 Violating CA Placer Co 131 2.5 Violating CA Sacramento Co 146 7.4 Violating CA Solano Co 115 0.5 CA Sutter Co 104 0.3 CA Yolo Co 111 St Louis, MO-IL 136 3.3 Violating IL Jersey Co 112 IL Madison Co 127 1.3 Violating IL St. Clair Co 108 0.3 MO Jefferson Co 126 1.7 Violating MO St. Charles Co 136 3.3 Violating MO St. Louis Co 129 2.0 Violating MO St. Louis city 108 0.3 Salem, OR 111 0.5 OR Marion Co 111 0.5 Salt Lake City-Ogden, UT 121 0.7 UT Davis Co 115 0.3 UT Salt Lake Co 121 0.7 UT Weber Co 103 San Antonio, TX 120 0.7 TX Bexar Co 120 0.7 San Diego, CA 141 6.7 Violating CA San Diego Co 141 6.7 Violating San Francisco-Oakland-San Jose, CA 138 5.7 Violating CA Alameda Co 138 5.7 Violating CA Contra Costa Co 127 1.3 Violating CA Marin Co 88 CA Napa Co 95 0.3 CA San Francisco Co 71 CA San Mateo Co 103 0.3 CA Santa Clara Co 129 1.7 Violating CA Solano Co 113 0.3 CA Sonoma Co 90 San Joaquin Valley, CA 165 30.5 Violating CA Fresno Co 146 12.1 Violating CA Kern Co 165 30.5 Violating CA Kings Co 138 2.7 Violating CA Madera Co 121 0.9 CA Merced Co 125 1.3 Violating CA San Joaquin Co 124 1.0 CA Stanislaus Co 125 1.3 Violating CA Tulare Co 140 5.4 Violating San Luis Obispo-Atascadero-Paso Robles, CA 104 CA San Luis Obispo Co 104 Santa Barbara-Santa Maria-Lompoc, CA 130 2.8 Violating CA Santa Barbara Co 130 2.8 Violating Sarasota-Bradenton, FL 99 FL Manatee Co 94 FL Sarasota Co 99 Savannah, GA 88 GA Chatham Co 88 Scranton-Wilkes-Barre-Hazleton, PA 110 PA Lackawanna Co 110 PA Luzerne Co 105 Seattle-Tacoma-Bremerton, WA 118 0.7 WA King Co 118 0.7 WA Pierce Co 98 0.3 WA Snohomish Co 79 Sheboygan, WI 122 0.7 WI Sheboygan Co 122 0.7 Shreveport-Bossier City, LA 100 LA Bossier Par 96 LA Caddo Par 100 South Bend-Elkhart, IN 115 IN Elkhart Co 115 IN St. Joseph Co 112 Southeast Desert Modified AQMA, CA 182 40.3 Violating CA Los Angeles Co 138 5.4 Violating CA Riverside Co 176 17.1 Violating CA San Bernardino Co 182 40.3 Violating Spokane, WA 84 WA Spokane Co 84 Springfield, IL 101 IL Sangamon Co 101 Springfield, MO 101 MO Greene Co 101 Springfield (Western MA), MA 129 1.7 Violating MA Berkshire Co 89 MA Hampden Co 126 1.3 Violating MA Hampshire Co 129 1.7 Violating State College, PA 106 PA Centre Co 106 Steubenville-Weirton, OH-WV 114 0.3 OH Jefferson Co 114 0.3 WV Hancock Co 103 0.3 Sunland Park, NM 135 2.1 Violating NM Dona Ana Co 135 2.1 Violating Syracuse, NY 103 NY Madison Co 88 NY Onondaga Co 103 Tallahassee, FL 90 FL Leon Co 90 Tampa-St. Petersburg-Clearwater, FL 109 0.7 FL Hillsborough Co 109 0.7 FL Pasco Co 87 FL Pinellas Co 92 Terre Haute, IN 107 IN Vigo Co 107 Toledo, OH 114 0.7 OH Lucas Co 114 0.7 Tucson, AZ 104 AZ Pima Co 104 Tulsa, OK 121 1.0 OK Tulsa Co 121 1.0 Tyler, TX 111 TX Smith Co 111 Utica-Rome, NY 90 NY Herkimer Co 86 NY Oneida Co 90 Victoria, TX 98 TX Victoria Co 98 Washington, DC-MD-VA 134 2.1 Violating DC Washington 125 1.3 Violating MD Calvert Co 97 MD Charles Co 109 0.3 MD Montgomery Co 119 0.3 MD Prince George's Co 134 2.1 Violating VA Arlington Co 126 1.3 Violating VA Fairfax Co 120 1.2 Violating VA Fauquier Co 99 VA Prince William Co 109 0.7 VA Stafford Co 109 VA Alexandria city 120 0.7 Wausau, WI 84 WI Marathon Co 84 Wheeling, WV-OH 104 WV Ohio Co 104 Wichita, KS 90 KS Sedgwick Co 90 Williamsport, PA 87 PA Lycoming Co 87 Wilmington, NC 103 NC New Hanover Co 103 York, PA 112 PA Adams Co 112 PA York Co 105 Youngstown-Warren-Sharon, PA-OH 111 0.3 OH Mahoning Co 108 0.3 OH Trumbull Co 108 PA Mercer Co 111 Yuba City, CA 108 CA Sutter Co 108 Yuma, AZ 99 AZ Yuma Co 99 LONE COUNTIES Design Expected Listed by State then County Value Exceedance County, State ppb Rate Clay Co, AL 116 0.3 De Kalb Co, AL 108 0.3 Geneva Co, AL 81 Sumter Co, AL 85 Yukon-koyukuk Ed, AK 58 Cochise Co, AZ 79 Clark Co, AR 92 Montgomery Co, AR 80 Newton Co, AR 80 Amador Co, CA 123 1.0 Lowest Possible 1995-97 Values 127 1.3 Violating Calaveras Co, CA (Adjacent to Stockton) 129 1.4 Violating Colusa Co, CA 111 Del Norte Co, CA 58 Glenn Co, CA 98 Imperial Co, CA 180 8.0 Violating Inyo Co, CA 93 Lake Co, CA 80 Mariposa Co, CA 111 Mendocino Co, CA 80 Mono Co, CA 100 Nevada Co, CA 110 Plumas Co, CA 92 Siskiyou Co, CA 70 Tehama Co, CA 100 Tuolumne Co, CA 116 0.3 Ventura Co, CA 158 17.3 Violating Gunnison Co, CO 82 Montezuma Co, CO 75 Sussex Co, DE 109 Calhoun Co, FL 86 Fannin Co, GA 97 Glynn Co, GA 86 Spalding Co, GA (in Atlanta MSA) 125 1.4 Violating Hawaii Co, HI 52 Maui Co, HI 52 Butte Co, ID 70 Adams Co, IL 89 Effingham Co, IL 97 Jo Daviess Co, IL 99 Macoupin Co, IL 103 Randolph Co, IL 102 Knox Co, IN 103 Kosciusko Co, IN 100 La Porte Co, IN (Adjacent to Chicago) 146 3.4 Violating Wabash Co, IN 108 Warrick Co, IN (in Evansville-Henderson MSA)131 1.7 Violating Van Buren Co, IA 82 Pawnee Co, KS 80 Sherman Co, KS 80 Bell Co, KY 92 Edmonson Co, KY 110 Graves Co, KY 94 Hardin Co, KY 115 0.3 Lawrence Co, KY 115 0.4 Mc Cracken Co, KY 103 Mc Lean Co, KY 110 Morgan Co, KY (Eastern KY) 126 1.5 Violating Perry Co, KY 92 Pike Co, KY 101 0.7 Pulaski Co, KY 99 Simpson Co, KY 100 Trigg Co, KY 104 Washington Co, KY 108 Beauregard Par, LA 108 Grant Par, LA 91 St Mary Par, LA 103 Aroostook Co, ME 76 Oxford Co, ME 97 Piscataquis Co, ME 80 Somerset Co, ME 92 Washington Co, ME 104 De Soto Co, MS (in Memphis MSA) 120 1.0 Lowest Possible 1995-97 Values 131 1.3 Violating Dorchester Co, MD 117 Allegan Co, MI 137 1.7 Violating Benzie Co, MI 108 0.3 Cass Co, MI 115 0.3 Huron Co, MI 115 0.3 Manistee Co, MI 97 Mason Co, MI (on Lake Michigan) 125 1.4 Violating Mecosta Co, MI 124 Roscommon Co, MI 99 Tuscola Co, MI 103 0.3 Koochiching Co, MN 75 Lake Co, MN 78 Adams Co, MS 94 Choctaw Co, MS 64 Franklin Co, MS 93 Lauderdale Co, MS 91 Lee Co, MS 94 Sharkey Co, MS 96 Warren Co, MS 96 Yalobusha Co, MS 93 Monroe Co, MO 97 0.3 Ste Genevieve Co, MO 122 1.0 Flat Head Co, MT 64 Douglas Co, NV 83 White Pine Co, NV 80 Belknap Co, NH 88 Carroll Co, NH 79 Cheshire Co, NH 91 Grafton Co, NH 81 Sullivan Co, NH 89 Essex Co, NY 99 Hamilton Co, NY 90 Jefferson Co, NY 104 0.3 Tompkins Co, NY 102 Ulster Co, NY 105 Avery Co, NC 95 Camden Co, NC 95 Carteret Co, NC 90 Caswell Co, NC 109 Duplin Co, NC 84 Haywood Co, NC 101 Macon Co, NC 88 Martin Co, NC 89 Montgomery Co, NC 106 Northampton Co, NC 101 Person Co, NC 94 Rockingham Co, NC 111 Swain Co, NC 76 Yancey Co, NC 103 0.4 Mc Kenzie Co, ND 64 Mercer Co, ND 62 Oliver Co, ND 63 Steele Co, ND 68 Clinton Co, OH 118 Knox Co, OH 113 0.3 Logan Co, OH 111 Noble Co, OH 119 0.6 Preble Co, OH 103 Elk Co, PA 95 Franklin Co, PA 113 Lawrence Co, PA 101 Abbeville Co, SC 93 Barnwell Co, SC 95 Chester Co, SC 105 0.3 Darlington Co, SC 100 Oconee Co, SC 92 Union Co, SC 93 Williamsburg Co, SC 88 Claiborne Co, TN 105 Coffee Co, TN 105 De Kalb Co, TN 97 Dyer Co, TN 112 Giles Co, TN 104 Haywood Co, TN 103 Humphreys Co, TN 102 Jefferson Co, TN (Adjacent to Knoxville) 123 1.0 Lowest Possible 1995-97 Values 125 1.3 Violating Putnam Co, TN 96 Brewster Co, TX 82 Cache Co, UT 83 San Juan Co, UT 77 Washington Co, UT 86 Bennington Co, VT 103 Caroline Co, VA 98 Frederick Co, VA 103 Henry Co, VA 104 Madison Co, VA 97 Montgomery Co, VA 96 Prince Edward Co, VA 101 Smyth Co, VA 98 Wythe Co, VA 95 Clallam Co, WA 58 Skagit Co, WA 64 Gilmer Co, WV 107 Greenbrier Co, WV 100 Tucker Co, WV 97 Columbia Co, WI 104 Dodge Co, WI 90 Door Co, WI 125 1.3 Violating Florence Co, WI 80 Fond Du Lac Co, WI 95 Jefferson Co, WI 98 Kewaunee Co, WI 120 0.7 Manitowoc Co, WI 126 1.7 Violating Oneida Co, WI 76 Polk Co, WI 85 Sauk Co, WI 93 Taylor Co, WI 81 Vernon Co, WI 83 Walworth Co, WI 100 Albany Co, WY 79 Sublette Co, WY 75 Teton Co, WY 76
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Areas With Data Violating in 1995-97 and No Violation in 1994-96 Based on 1995-97 data, the 1-hour standard will still apply to the following areas: Jefferson County, TN The county is adjacent to the Knoxville, TN MSA and is violating the 1-hour standard during 1995-97. The monitor (47-089-0001) has a daily maximum 1-hour concentration of 132 ppb in 1995, 127 and 125 ppb in 1996, and a 138 ppb in 1997. If there are complete data in 1997, the design value would be 125 ppb and the expected exceedance rate would be 1.3 (which is a violation). All exceedances are in AIRS. Kent and Queen Anne's Counties, MD The monitor (24-029-0002) is violating the 1-hour standard during 1995-97. In 1995 there was one exceedance (135 ppb) and in 1997 there were four exceedances (148, 139, 129, and 126 ppb). If there are complete data in 1997, the design value would be 129 ppb and the expected exceedance rate would be 1.7 (which is a violation). All exceedances are in AIRS. For the areas listed below, the 1997 data are reported from sources other than AIRS and may not be quality assured. If the data is determined to be incorrect and the area has no violations, the 1-hour standard will be revoked after complete 1997 data are available. Kansas City, KS-MO The monitor (29-047-0005) in Clay Co., MO, is violating the 1-hour standard during 1995-97. In 1995 there were three exceedances ( 161, 131, and 128 ppb) and in 1997 there was one exceedance of 133 ppb. If there are complete data in 1997, the design value would be 128 ppb and the expected exceedance rate would be 1.3 (which is a violation). As of this date the 1997 exceedance is not in AIRS. DeSoto County, MS (Memphis) The monitor (28-033-0002) is violating the 1-hour standard during 1995-97. In 1996 there were three exceedances ( 145, 145, and 139 ppb) and in 1997 there was one exceedance of the 1-hour standard at 131 ppb. If there are complete data in 1997, the design value would be 131 and the expected exceedance rate would be 1.3 (which is a violation). As of this date the 1997 exceedance is not in AIRS. Lancaster, PA The monitor (42-071-0007) is violating the 1-hour standard during 1995-97. In 1995 there was one exceedance (125 ppb) and in 1997 there were three exceedances (139, 133, and another exceedance greater than 124 ppb). If there are complete data in 1997, the design value would be 125 ppb and the expected exceedance rate would be 1.3 (which is a violation). As of this date the 1997 exceedances are not in AIRS. Amador County, CA The monitor (06-005-0002) is violating the 1-hour standard during 1995-97. In 1995 there was one exceedance (146 ppb), in 1996 there were two exceedances (127 and 127 ppb) and in 1977 there was one exceedance (135 ppb). If there are complete data in 1997, the design value would be 127 ppb and the expected exceedance rate would be 1.3 (which is a violation). All exceedances are in AIRS. |