A complete list of all programs within the Department of Environment, Great Lakes, and Energy (EGLE)
Community involvement and public participation are an essential part of EGLE’s mission, vision, and values.
Resources and information on utilizing RRD's data exchange and the Inventory of Facilities.
An interactive map displaying contaminated sites throughout Michigan regulated under Parts 213, 201, and 211.
EGLE's interactive calendar is designed to provide timely information on decisions before the Director, proposed settlements of contested cases, administrative rules promulgation, public hearings, meetings and comment deadlines, and environmental conferences, workshops and training programs.
The Michigan Freedom of Information Act (FOIA) provides all persons (except persons incarcerated in correctional facilities) with access to public records of public bodies. Requests to inspect or receive public records from EGLE must be in writing and describe the requested records with enough detail to enable the department to identify and locate the requested records. Some records are exempt from disclosure under the FOIA or another statute and thus will not be provided. A fee may be charged to process your request. Please note that many records are available that do not require a formal FOIA request.
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Jay Olaguer, Air Quality Division
OlaguerJ@michigan.gov
517-512-0059
This webpage has information about Michigan's ozone attainment status, the Clean Air Act (CAA) requirements for the nonattainment classifications, EGLE's timeline, workgroups, field study, and additional related resources.
Information on proposed rule changes related ozone nonattainment can be found on the Laws and Rules page.
Ozone Nonattainment Designation Map West Michigan currently has areas designated as "Moderate Nonattainment" and there are areas of southeast Michigan designated as "Attainment/Maintenance." To learn more about the history of ozone attainment in Michigan and how three-year design values are used to determine attainment status, see "Michigan's Ozone History" below. To get to where Michigan is today, several things happened:
Ozone Reclassification Chart The southeast Michigan redesignation request includes Michigan’s maintenance plan detailing how air quality will be maintained considering projected growth for a period of 20 years. If future monitoring shows that ozone levels are no longer meeting the criteria, the maintenance plan helps determine when and how the problem will be addressed through adoption of contingency measures.
Michigan currently has three areas in West Michigan that were reclassified to moderate nonattainment on November 7, 2022. The Clean Air Act requires several responses / actions be taken for areas designated as moderate, including:
The United States Environmental Protection Agency (USEPA) revised the primary and secondary ozone National Ambient Air Quality Standard (NAAQS) to 70 parts per billion (ppb) October 26, 2015 and published ozone nonattainment designations with an effective date of August 3, 2018. The Michigan counties initially designated as nonattainment were Berrien, Livingston, Macomb, Monroe, Oakland, St. Clair, Washtenaw, and Wayne, and western portions of Allegan and Muskegon counties.
Ozone nonattainment areas are classified based on the severity of their ozone concentrations. The ozone concentration uses a calculation called the "design value." The nonattainment counties were classified as marginal nonattainment, which means that ozone concentrations were less than 10 parts per billion (ppb) above the standard at the time of initial designations. Marginal nonattainment is the lowest classification requiring less actions than more severe classifications.
Michigan had until August 3, 2021, to bring the design values at or below the 2015 Ozone NAAQS. Michigan was not able to attain the standard based on data from 2018 – 2020 and was "bumped-up" to a moderate nonattainment classification for all nonattainment areas. This “bump-up” became effective November 7, 2022 for the west Michigan nonattainment areas and March 1, 2023 for the southeast Michigan nonattainment areas. As of May 19, 2023, southeast Michigan was redesignated as attainment, please see below for more information on that process.
* Dates Subject to Change
Ozone Standard Deadlines Timeline (2018 to 2024) Work to address moderate nonattainment requirements and upcoming deadlines associated with the 2015 ozone standard is ongoing. This work has consisted of development of VOC and NOx RACT rules, exceptional events demonstrations where applicable, an attainment plan for West Michigan, and more.
A major component of Michigan's response to the nonattainment status of these areas may be rule making. Information regarding recently finalized and upcoming rules can be found on the EGLE AQD Laws and Rules webpage.
The following workgroups have been established with the intent of facilitating early discussion of potential control strategies for a moderate nonattainment SIP for the southeast Michigan Ozone nonattainment area:
