For a particular application, please contact the listed permit engineer.
Permit to Install (PTI) applications included here may be of particular interest to the public. These applications and supporting documents are subject to revision during the review of the applications in response to EGLE requirements. The public is encouraged to provide informal comments to assist the EGLE in identifying issues of concern.
Permit applications are now available in MiEnviro Portal. For help using the MiEnviro Site Explorer and other aspects of the system visit Using Site Map Explorer page.
Location:
5088 Energy Drive
Flint, MI 48505
Details:
This PTI Application No. was APP-2021-0019 for a new hot mix asphalt plant. The application was received December 28, 2020 and was approved with changes on November 15, 2021 as PTI No. 90-21.
Public documents related to Ajax Materials Corporation, including inspections, violation notices, permits, and other compliance information, are now available at MiEnviro Portal – Ajax Materials Corporation.
Contact:
Mark Mitchell, Air Quality Division
MitchellM7@Michigan.gov
517-582-5293
Laura Gramza, Air Quality Division
GramzaL@Michigan.gov
517-230-4404
Location:
10611 Five Mile Road
Northville, MI 48168
Details:
Arbor Hills Energy is an active landfill. On the same property (or stationary source is a landfill gas-to-energy plant, Emerald RNG, LLC (SRN P1488). There have been several PTI applications associated with these facilities.
Public documents related to Arbor Hills Landfill, including inspections, violation notices, permits, and other compliance information, are now available at:
Amber Brown, Air Quality Division
BrownA39@Michigan.gov
517-730-1158
Location:
25 Marion Avenue
River Rouge, MI 48218
Details:
PTI Application No. APP-2022-0028 was a request to use of coke oven gas as an additional fuel. PTI 77-24 was approved with changes based on public input on 7/25/2024 based on an evaluation of this application.
Public documents related to Carmeuse Lime, Inc., including inspections, violation notices, permits, and other compliance information, are now available at: MiEnviro Portal Carmeuse Lime, Inc.
Andrew Drury, Air Quality Division
DruryA@Michigan.gov
517-648-6663
Location:
Ironwood & Wakefield Townships
Gogebic County, MI 49938
Details:
Copperwood Resources, Inc/Highland Copper Company Inc.(Copperwood) is a proposed nonferrous mine and ore processing facility. Copperwood plans to construct this facility to mine, extract, and process a nonferrous copper and silver ore body. A PTI No. 180-11A v2.0 was approved with changes based on public comment on February 25, 2025.
Public documents related to Copperwood, including inspections, violation notices, permits, and other compliance information, are now available at: MiEnviro Portal Highland Copper Company, Inc.
Andrew Drury, Air Quality Division
DruryA@Michigan.gov
517-648-6663
Location:
6510 AAA Road
Michigamme Township, MI 49861
Details:
Eagle Mine, LLC is a Subsidiary of Lundin Mining. PTI Application No. APP-2024-0180 was received on 7/30/2024 to replace APP-2024-0042. A PTI No. 50-06D v2.0 was approved with changes on May 15, 2025. Public documents related to Eagle Mine, including inspections, violation notices, permits, and other compliance information, are now available at: MiEnviro Portal Eagle Mine, LLC.
Andrew Drury, Air Quality Division
DruryA@Michigan.gov
517-648-6663
Location:
8941 W. Jefferson Avenue
Jefferson Marine
Detroit, MI 48209
Details:
The application for a cement grinding plant was received March 10, 2023 and was approved with changes based on public comment on November 30, 2023 as PTI No. 135-23. Public documents related to Edward C. Levy Company, including inspections, violation notices, permits, and other compliance information, are now available at MiEnviro Portal – Edward C. Levy Company.
Jacob Young, Air Quality Division
YoungJ30@Michigan.gov
517-582-5218
Location:
1400 Zug Island Road
Detroit, MI 48209
Details:
The application was for the installation of a secondary screener and subsequent equipment. PTI0000061 v1.0 was approved with changes on June 11, 2025. Public documents related to EES Coke, including inspections, violation notices, permits, and other compliance information, are now available at MiEnviro Portal EES Coke Battery, LLC.
Grace Knauss, Air Quality Division
KnaussG@Michigan.gov
517-643-6174
Location:
1300 S. Fort Street
Detroit, MI 48217
Details:
The Marathon Detroit Refinery stationary source, State Registration Number (A9831), consists of three separate companies that are included in the Renewable Operating Permit (ROP) for the source.
Public documents related to Marathon, including inspections, violation notices, permits, and other compliance information, are now available at MiEnviro Portal Marathon Petroleum Company.
Marathon’s facility-specific Information page contains additional information on compliance and enforcement activities.
Marathon is asking to install equipment for unloading feedstock from railcars, to load more fuels into railcars using existing equipment, and to change some permit conditions, including removing some sulfur production limits. Marathon refers to these changes as the Feedstock & Fuels Flexibility Project.
MPLX is asking to use the vapor combustion unit control device instead of the vapor recovery unit control device for a limited amount of time during fuel loading.
The companies submitted air permit applications to allow Marathon to operate at its physical capacity, to add new criteria pollutant emission caps, and for some pollution control projects. These permits were approved with changes on September 10, 2024.
These documents can be found in MiEnviro Portal Marathon Petroleum Company.
Location:
4000 Saint Jean Street
Detroit, MI 48124
Details:
Stellantis – FCA Detroit Assembly Complex – Mack (Mack Plant) is an automotive assembly plant. Application No. APP-2022-0125 was a request to modify their existing permit to add requirements for the continued operation of a second air pollution control device and to increase how much particulate matter they are allowed to emit. PTI No. 14-19B v1.0 was approved with changes on November 8, 2024.
Public documents related to the Mack Plant, including inspections, violation notices, permits, and other compliance information, are now available at MiEnviro Portal Stellantis FCA Detroit Assembly Complex Mack.
The Stellantis facility-specific Information page contains additional information on compliance and enforcement activities for all Michigan Stellantis facilities.
Dave Thompson, Air Quality Division
ThompsonD22@Michigan.gov
517-582-5095
