Area Designations for 2008 Ground-level Ozone Standards
2008 Ground-level Ozone Standards —
Region 5 Final Designations, April 2012 and May 2012
EPA is implementing the 2008 ozone standards as required by the Clean Air Act. Meeting these standards will provide important public and environmental health benefits. EPA has worked closely with states and tribes to identify areas in the country that meet the standards and those that need to take steps to reduce ozone pollution.
EPAs final designations are based on air quality monitoring data, recommendations submitted by the states and tribes, and other technical information. EPA will work closely with states and tribes to implement the standards using a common sense approach that improves air quality, maximizes flexibilities and minimizes burden on state and local governments.
Map of Final Designations - EPA Region 5
This table identifies area designations for EPAs region 5 states. In some cases EPA designated partial counties. These are identified by a (P). If a county is not listed below, EPA has designated it as unclassifiable/attainment.
EPA Areas for Designations for the 2008 Ozone Standards
| State | Area Name | Counties | Area Classification |
|---|---|---|---|
| Illinois | Chicago-Naperville, IL-IN-WI | Cook | Marginal |
| DuPage | |||
| Grundy (p) | |||
| Kane | |||
| Kendall (p) | |||
| Lake | |||
| McHenry | |||
| Will | |||
| St. Louis-St. Charles-Farmington, MO-IL | Madison | Marginal | |
| Monroe | |||
| St. Clair | |||
| Rest of state is unclassifiable/attainment | |||
| Indiana | Chicago-Naperville, IL-IN-WI | Lake | Marginal |
| Porter | |||
| Cincinnati, OH-KY-IN | Dearborn (p) | Marginal | |
| Rest of state is unclassifiable/attainment | |||
| Michigan | Entire state is unclassifiable/attainment | ||
| Minnesota | Entire state is unclassifiable/attainment | ||
| Ohio | Cincinnati, OH-KY-IN | Butler | Marginal |
| Clermont | |||
| Clinton | |||
| Hamilton | |||
| Warren | |||
| Cleveland-Akron-Lorain, OH | Ashtabula | Marginal | |
| Cuyahoga | |||
| Geauga | |||
| Lake | |||
| Lorain | |||
| Medina | |||
| Portage | |||
| Summit | |||
| Columbus, OH | Delaware | Marginal | |
| Fairfield | |||
| Franklin | |||
| Knox | |||
| Licking | |||
| Madison | |||
| Wisconsin | Chicago-Naperville, IL-IN-WI | Kenosha (p) | Marginal |
| Sheboygan County, WI | Sheboygan | Marginal | |
| Rest of state is unclassifiable/attainment | |||
Tribal information is available on the Tribal Designations page.
Recommendations from Region 5 States and EPA Responses