• November 2025: The Supplemental Environmental Project (SEP) required by Consent Order AQD No. 2022-16 was completed in April 2025. For this SEP, Stellantis updated the building management system at Southeastern High School, located at 3030 Fairview Street in Detroit. AQD received the SEP Completion Report from Stellantis on July 15, 2025. At that time, more information was needed to ensure the SEP was done correctly. AQD reviewed the additional information provided by the company and determined the SEP was completed properly.

• November 2024: Air Permit No. 14-19B has been issued with changes based on public comments. The permit changes include correction to the stack testing methodology and the removal of obsolete footnotes and stacks. More information can be found on our public notice page, under “Final Decisions”.
  
  EGLE sought public input during the comment period. A hybrid informational session and a public hearing were held as part of the public comment period.
  • Recording of the September 5, 2024 informational session and hearing
• July 2024: We have extended the public comment period to September 9, and rescheduled the public meeting and hearing to September 5, for the proposed air permit requested by FCA’s Mack Plant.  This is a request to modify their current 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. The comment period has remained open, any comments already submitted on this proposed action will be considered in the final decision. Find more information at Michigan.gov/EGLEAirPublicNotice.     
• June 2024: EGLE opened a public comment period on an air permit for the Detroit Assembly Complex – Mack Plant on July 12. The company is requesting to modify their current Permit to Install 14-19A for the existing automotive assembly plant by adding requirements for the continued operation of a second regenerative thermal oxidizer (RTO2) and increasing particulate matter emission limits. More information on how to submit comments or learn more about this request, can be found at Michigan.gov/EGLEAirPublicNotice.
• March 2024: The consent order between EGLE and the FCA Jefferson North Assembly Plant has been finalized without changes. FCA has been in compliance with the 12-month rolling 4.8 lbs volatile organic compound per job emission limit since September 2023.  More details about the decision are below:
  • Response to Comments
  • Proposed Enforcement Factsheet
  • Enforcement Summary and Draft Consent Order

  More information about the enforcement action, how to attend the meeting, and submitting comments can be found at Michigan.gov/EGLEAirPublicNotice (choose “Compliance/Consent Orders).

• February 2024: The Stellantis Detroit Assembly Complex Mack (DACM) installed and began operating an air pollutant control device called a regenerative thermal oxidizer (RTO) in June 2023.  The control device, RTO2, was installed to reduce odors and resulted from an enforcement action. This action included mitigation measures that resolved multiple verified odor violations issued to the company.
• January 2024: An on-line informational session and public hearing was held on January 9, 2024, at 6:00 PM EST.

• December 2023: EGLE is seeking public input on a proposed consent order. The proposed consent order contains a compliance plan, a monetary fine, and fines for future violations. Comments may be submitted at any time during the comment period ending on January 23, 2024. An online informational session and public hearing will be held on January 9, 2024, at 6:00 PM EST. The meeting will be recorded. A link to the recording will be provided when it is available.
• July 2023: The company began operation of the second regenerative thermal oxidizer (RTO2) on July 5. EGLE staff did an inspection of RTO2 on July 17 and determined it is installed and operating as required by the existing consent order. The permit associated with this equipment is being drafted and will contain further requirements for testing, monitoring, and recordkeeping. EGLE staff will continue to be responsive to community concerns and do additional investigations when warranted.
• June 2023: As a result of the May 11, 2023 violation notice issued for odors following community complaints and an odor investigation by AQD, the company is required to pay a stipulated penalty of $5,000 by July13, 2023 as required by the 2022 consent order.
• May 2023: A violation notice was issued on May 11, 2023 for odors following community complaints and an odor investigation by AQD. The facility has 21 days to respond with a plan to return to compliance. The company's response will be posted once it is received.
• March 2023: EGLE's AQD did limited onsite air sampling on October 14, 2022.  The purpose of the sampling was to determine whether community odor complaints were linked to specific air pollutants exiting the building at points other than the stacks, including doorways, vents, openings, or storage piles. Full results are available in the Detroit Assembly Complex Stellantis On-Site Sampling Report.
• January 2023:  EGLE has started escalated enforcement against the JNAP facility related to the November 14, 2022 violation notice for excess emissions.  The response to the violation notice was received on December 5, 2022 with additional information sent on December 21, 2022.  Escalated enforcement can take time.  More information will be shared as it becomes available.

• December 2022:  The consent order between EGLE and the FCA Mack Plant has been finalized with changes.  These changes include:
  • The second regenerative thermal oxidizer must begin operation by June 30, 2023.
  • The October 4, 2022, violation notice was added to the consent order with a $10,000 increase to the total monetary fine.
  • Updated Nuisance Minimization Plan for Odors (NMPO).
  • Removal of the Brewer Park Supplemental Environmental Project (SEP).
  • Changed the monetary fine that is being paid to the State of Michigan general fund from $62,863 to $136,832.
    
    More details about the decision and the final Consent Order are below:
  • Response to Comments
  • Final Consent Order
  • Proposed Enforcement Factsheet
  • Enforcement Summary and Draft Consent Order
• November 2022:  A violation notice was issued on November 14, 2022 to the JNAP facility for exceeding an emission limit in their permit for the month of September 2022. The facility has 21 days to respond with a plan to return to compliance. The company's response will be posted once it is received.
• October 2022:  View the recording of the October 19, 2022, information session and public hearing on the enforcement action.
• September 2022:  EGLE is taking enforcement action and is seeking public input on a proposed consent order. The proposed consent order contains a monetary penalty, a compliance plan, penalties for future violations, and two supplemental environmental projects (SEPs). Comments can be submitted at any time during the comment period ending on November 2, 2022.  An informational session and public hearing will be held on October 19, 2022, at 6:00 PM EDT.
• August 2022:  Work on the enforcement action is moving forward and is anticipated to go out for public notice and comment on the Mack Plant in fall 2022.  The public notice and comment period will include a virtual information session and public hearing.  Comments will be accepted at any time during the comment period.  More information will be shared at Michigan.gov/EGLEAirPublicNotice (choose “Compliance / Consent Orders” as it becomes available). Repeat sampling is still being planned for fall 2022. EGLE will share results of this sampling when received.
• July 2022: On-site air sampling on the Stellantis property was completed in early June. This sampling was done to further evaluate sources of potential odors. Unfortunately, due to samples being damaged by high temperatures during shipping, the samples were ruined and could not be analyzed. Because the samples were damaged, the results would not be valid. Staff at EGLE and Stellantis were very displeased with this news and are working hard to redo the sampling. The results of sampling can take four to six weeks and will be shared once they are received. EGLE continues to work through the air permitting and enforcement process. Progress in both these areas is being made.
• May 2022: Recent compliance activity has included:
  • The submittal of an air permit application by Stellantis requesting the installation of a new air pollution control device, called a Regenerative Thermal Oxidizer or RTO and changes to existing exhaust equipment.
  • A May 20, 2022 violation notice for objectionable odors.
  • Continuing progress on the escalated enforcement action.
  • Final planning for additional onsite air sampling to help further evaluate sources of potential odors.
• March 2022: EGLE continues to respond to and evaluate complaints. An additional violation notice was issued for objectionable odors on March 24, 2022. EGLE is working through the escalated enforcement process, partnering with the USEPA, and consulting with MDHHS on matters related to evaluation of public health. Additional information will be posted as it becomes available.
• January 12, 2022: EGLE will host an on-line community meeting to talk with the public about air sampling activities around the Stellantis - Detroit Assembly Complex in Detroit, Michigan. The online meeting will be on Thursday, January 27, 2022, at 6:00 PM EST. The meeting will be recorded and the recording posted soon. A link will be provided when it is available.
• January 27, 2022: On-Line Community Meeting
• January 11, 2022: Stellantis has submitted the Detroit Assembly Complex Mack Odor Investigation, Analysis, and Mitigation Plan as part of their response to the violation notices. EGLE is reviewing the plan.

Air Sampling Updates

• Air Sampling Map 2021
• GMAP Report for November 19, 2021
• GMAP Report for November 19, 2021 - Addendum
• MOOSE Field Study Measurements*
• Detroit Assembly Complex Stellantis On-Site Sampling Report (March 3, 2023)

General Updates

• December 21, 2021: Stellantis notified EGLE that corrections has been made to the assembly line ductwork. The ductwork is now venting emissions to the control devices, as the air permit required. EGLE and MDHHS continue to investigate odors and evaluate air sampling results.
• November 22 & December 8, 2021: The Michigan Department of Health and Human Services (MDHHS) contractors conducted air sampling near the facility. The samples from November 22 have been analyzed by laboratory staff and the results have been provided to MDHHS. The samples collected on December 8 are being analyzed by laboratory staff.
• November 22, 2021: At EGLE's request, the United States Environmental Protection Agency did mobile air monitoring on November 16 and 17 using their Geospatial Measurement of Air Pollution (GMAP) vehicle. Results of the monitoring and the evaluation can be found in their GMAP Report for November 19, 2021. Please note that canister samples collected during this monitoring are still being analyzed by laboratory staff. These results will be added as soon as they become available.
• November 18, 2021: EGLE has started escalated enforcement against Stellantis related to violations above.
• Autumn 2021: Recent compliance activity has included September 20, 2021, October 20, 2021, and November 3, 2021 violation notices. These violations were related to odors and improperly installed equipment.