![[logo] US EPA](http://www.epa.gov/epafiles/images/logo_epaseal.gif){kind=logo}
Carbon Monoxide Maintenance State/Area/County Report
As of November 13, 2009
| ALASKA(Region X) |
| Anchorage, AK (Serious) |
| Anchorage Municipality (P) |
| Portion of Anchorage urban area |
| Fairbanks, AK (Serious) |
| Fairbanks North Star Borough (P) |
| Portion of Fairbanks urban area |
| ARIZONA(Region IX) |
| Phoenix, AZ (Serious) |
| Maricopa Co (P) |
| Tucson, AZ (Not Classified) |
| Pima Co (P) |
| Portion of Tucson urban area |
| CALIFORNIA(Region IX) |
| Bakersfield, CA (Not Classified) |
| Kern Co (P) |
| Chico, CA (Moderate <= 12.7ppm) |
| Butte Co (P) |
| Fresno, CA (Moderate > 12.7ppm) |
| Fresno Co (P) |
| Fresno Urbanized Area (11/20/85, 50 FR 47735) |
| Lake Tahoe North Shore, CA (Not Classified) |
| Placer Co (P) |
| Lake Tahoe South Shore, CA (Moderate <= 12.7ppm) |
| El Dorado Co (P) |
| Los Angeles South Coast Air Basin, CA (Serious) |
| Los Angeles Co (P) |
| Orange Co |
| Riverside Co (P) |
| San Bernardino Co (P) |
| Modesto, CA (Moderate <= 12.7ppm) |
| Stanislaus Co (P) |
| Sacramento, CA (Moderate <= 12.7ppm) |
| Placer Co (P) |
| Sacramento Co (P) |
| Yolo Co (P) |
| San Diego, CA (Moderate <= 12.7ppm) |
| San Diego Co (P) |
| San Francisco-Oakland-San Jose, CA (Moderate <= 12.7ppm) |
| Alameda Co (P) |
| Contra Costa Co (P) |
| Marin Co (P) |
| Napa Co (P) |
| San Francisco Co |
| San Mateo Co (P) |
| Santa Clara Co (P) |
| Solano Co (P) |
| Sonoma Co (P) |
| Stockton, CA (Moderate <= 12.7ppm) |
| San Joaquin Co (P) |
| COLORADO(Region VIII) |
| Colorado Springs, CO (Moderate <= 12.7ppm) |
| El Paso Co (P) |
| Teller Co (P) |
| Denver-Boulder, CO (Serious) |
| Adams Co (P) |
| Denver Metro Area |
| Arapahoe Co (P) |
| Denver Metro Area |
| Boulder Co (P) |
| Denver Metro Area |
| Broomfield Co |
| Denver Co |
| Douglas Co (P) |
| Denver Metro Area |
| Jefferson Co (P) |
| Denver Metro Area |
| Fort Collins, CO (Moderate <= 12.7ppm) |
| Larimer Co (P) |
| Greeley, CO (Not Classified) |
| Weld Co (P) |
| Longmont, CO (Moderate <= 12.7ppm) |
| Boulder Co (P) |
| Portion of Longmont |
| Weld Co (P) |
| Portion of Longmont |
| CONNECTICUT(Region I) |
| Hartford-New Britain-Middletown, CT (Moderate <= 12.7ppm) |
| Hartford Co (P) |
| Litchfield Co (P) |
| Plymouth Town |
| Middlesex Co (P) |
| Tolland Co (P) |
| New Haven-Meriden-Waterbury, CT (Not Classified) |
| Fairfield Co (P) |
| Shelton City |
| Litchfield Co (P) |
| New Haven Co |
| New York-N. New Jersey-Long Island, NY-NJ-CT (Moderate > 12.7ppm) |
| Fairfield Co (P) |
| All cities and townships except Shelton city |
| Litchfield Co (P) |
| Bridgewater town, New Milford town |
| DISTRICT OF COLUMBIA(Region III) |
| Washington, DC-MD-VA (Moderate <= 12.7ppm) |
| Entire District |
| IDAHO(Region X) |
| Boise-Northern Ada County, ID (Not Classified) |
| Ada Co (P) |
| Northern half of Ada Co |
| INDIANA(Region V) |
| East Chicago, IN (Not Classified) |
| Lake Co (P) |
| Indianapolis, IN (Not Classified) |
| Marion Co (P) |
| MARYLAND(Region III) |
| Baltimore, MD (Moderate <= 12.7ppm) |
| Baltimore (City) (P) |
| Washington, DC-MD-VA (Moderate <= 12.7ppm) |
| Montgomery Co (P) |
| Election Districts 4, 7, 13 |
| Prince George's Co (P) |
| Election Districts 2, 6, 12, 16, 17, 18 |
| MASSACHUSETTS(Region I) |
| Boston, MA (Moderate <= 12.7ppm) |
| Middlesex Co (P) |
| Norfolk Co (P) |
| Quincy CIty |
| Suffolk Co (P) |
| Cities of: Boston, Chelsea, and Revere |
| Lowell, MA (Not Classified) |
| Middlesex Co (P) |
| Lowell City |
| Springfield, MA (Not Classified) |
| Hampden Co (P) |
| Springfield City |
| Waltham, MA (Not Classified) |
| Middlesex Co (P) |
| Waltham City |
| Worcester, MA (Not Classified) |
| Worcester Co (P) |
| City of Worcester |
| MICHIGAN(Region V) |
| Detroit, MI (Not Classified) |
| Macomb Co (P) |
| A portion of Detroit |
| Oakland Co (P) |
| A portion of Detroit |
| Wayne Co (P) |
| A portion of Detroit |
| MINNESOTA(Region V) |
| Duluth, MN (Moderate <= 12.7ppm) |
| St Louis Co (P) |
| City of Duluth |
| Minneapolis-St Paul, MN (Moderate <= 12.7ppm) |
| Anoka Co |
| Carver Co (P) |
| Dakota Co (P) |
| Hennepin Co |
| Ramsey Co |
| Scott Co (P) |
| Washington Co (P) |
| Wright Co (P) |
| MISSOURI(Region VII) |
| St Louis, MO (Not Classified) |
| St Louis |
| St Louis Co (P) |
| MONTANA(Region VIII) |
| Billings, MT (Not Classified) |
| Yellowstone Co (P) |
| Certain ranges and townships |
| Great Falls, MT (Not Classified) |
| Cascade Co (P) |
| Missoula, MT (Moderate <= 12.7ppm) |
| Missoula Co (P) |
| NEVADA(Region IX) |
| Lake Tahoe, NV (Not Classified) |
| Carson City (P) |
| Hydrographic Area 90 |
| Douglas Co (P) |
| Hydrographic Area 90 |
| Washoe Co (P) |
| Hydrographic Area 90 |
| Reno, NV (Moderate <= 12.7ppm) |
| Washoe Co (P) |
| Truckee Meadows Hydrographic Area 87 |
| NEW HAMPSHIRE(Region I) |
| Manchester, NH (Not Classified) |
| Hillsborough Co (P) |
| City of Manchester |
| Nashua, NH (Not Classified) |
| Hillsborough Co (P) |
| City of Nashua |
| NEW JERSEY(Region II) |
| Atlantic City, NJ (Not Classified) |
| Atlantic Co (P) |
| The City of Atlantic City |
| Burlington, NJ (Not Classified) |
| Burlington Co (P) |
| City of Burlington |
| Freehold, NJ (Not Classified) |
| Monmouth Co (P) |
| Borough of Freehold |
| Morristown, NJ (Not Classified) |
| Morris Co (P) |
| City of Morristown |
| New York-N. New Jersey-Long Island, NY-NJ-CT (Moderate > 12.7ppm) |
| Bergen Co |
| Essex Co |
| Hudson Co |
| Passaic Co (P) |
| Union Co |
| Penns Grove, NJ (Not Classified) |
| Salem Co (P) |
| Perth Amboy, NJ (Not Classified) |
| Middlesex Co (P) |
| City of Perth Amboy |
| Philadelphia-Camden Co, PA-NJ (Moderate <= 12.7ppm) |
| Camden Co |
| Somerville, NJ (Not Classified) |
| Somerset Co (P) |
| Borough of Somerville |
| Toms River, NJ (Not Classified) |
| Ocean Co (P) |
| City of Toms River |
| Trenton, NJ (Not Classified) |
| Mercer Co (P) |
| City of Trenton |
| NEW MEXICO(Region VI) |
| Albuquerque, NM (Moderate <= 12.7ppm) |
| Bernalillo Co |
| NEW YORK(Region II) |
| New York-N. New Jersey-Long Island, NY-NJ-CT (Moderate > 12.7ppm) |
| Bronx Co |
| Kings Co |
| Nassau Co |
| New York Co |
| Queens Co |
| Richmond Co |
| Westchester Co |
| Syracuse, NY (Moderate <= 12.7ppm) |
| Onondaga Co |
| NORTH CAROLINA(Region IV) |
| Charlotte, NC (Not Classified) |
| Mecklenburg Co |
| Raleigh-Durham, NC (Moderate <= 12.7ppm) |
| Durham Co |
| Wake Co |
| Winston-Salem, NC (Moderate <= 12.7ppm) |
| Forsyth Co |
| OHIO(Region V) |
| Cleveland, OH (Moderate <= 12.7ppm) |
| Cuyahoga Co |
| OREGON(Region X) |
| Eugene-Springfield, OR (Not Classified) |
| Lane Co (P) |
| Air Quality Maintenance Area |
| Grants Pass, OR (Moderate <= 12.7ppm) |
| Josephine Co (P) |
| Central Business District |
| Klamath Falls, OR (Moderate <= 12.7ppm) |
| Klamath Co (P) |
| Urban Growth Boundary |
| Medford, OR (Moderate <= 12.7ppm) |
| Jackson Co (P) |
| Medford-Ashland Urban Growth Boundary |
| Portland, OR (Moderate <= 12.7ppm) |
| Clackamas Co (P) |
| Portland Metro Service District Boundary |
| Multnomah Co (P) |
| Portland Metro Service District Boundary |
| Washington Co (P) |
| Portland Metro Service District Boundary |
| Salem, OR (Not Classified) |
| Marion Co (P) |
| City of Salem |
| Polk Co (P) |
| City of Salem |
| PENNSYLVANIA(Region III) |
| Philadelphia-Camden Co, PA-NJ (Moderate <= 12.7ppm) |
| Philadelphia Co (P) |
| Pittsburgh, PA (Not Classified) |
| Allegheny Co (P) |
| TENNESSEE(Region IV) |
| Memphis, TN (Moderate <= 12.7ppm) |
| Shelby Co |
| TEXAS(Region VI) |
| El Paso, TX (Moderate <= 12.7ppm) |
| El Paso Co (P) |
| Portion of the City Limits of El Paso |
| UTAH(Region VIII) |
| Ogden, UT (Moderate <= 12.7ppm) |
| Weber Co (P) |
| City of Ogden |
| Provo, UT (Moderate > 12.7ppm) |
| Utah Co (P) |
| City of Provo |
| Salt Lake City, UT (Not Classified) |
| Salt Lake Co (P) |
| Salt Lake City |
| VIRGINIA(Region III) |
| Washington, DC-MD-VA (Moderate <= 12.7ppm) |
| Alexandria |
| Arlington Co |
| WASHINGTON(Region X) |
| Seattle-Tacoma, WA (Moderate > 12.7ppm) |
| King Co (P) |
| Pierce Co (P) |
| Snohomish Co (P) |
| Spokane, WA (Serious) |
| Spokane Co (P) |
| Vancouver, WA (Moderate <= 12.7ppm) |
| Clark Co (P) |
| Yakima, WA (Not Classified) |
| Yakima Co (P) |
| Portion of the Central Business District |
|
|