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Detroit Refinery Expansion Permit Enhancements

Marathon's Detroit refinery is the only refinery in Michigan. Our Detroit Heavy Oil Upgrade Project (DHOUP) will add new equipment to process heavy crude oils, such as those from Canadian oil sands. DHOUP will add more than 400,000 gallons per day of clean transportation fuel to the marketplace. Project completion is expected in 2012.

The refinery is in an area defined as an environmental justice community by the U.S. Environmental Protection Agency (EPA). Marathon followed the recommendation of the Michigan Department of Environmental Quality to conduct extensive public outreach before applying for environmental permits. The purpose was to understand what Marathon could do to improve the project.

Going Beyond Compliance 

As a result of our outreach and stakeholder engagement, Marathon committed to go beyond environmental permit compliance to reduce air emissions. Initial actions included retrofitting 160 Detroit public school buses with diesel emission controls and enhancing street sweeping of paved roads near the refinery.

Since the DHOUP air permit was issued in June 2008, we have continued to work with the community, Sierra Club, regulators and other stakeholders to look for potential additional enhancements.

In September 2008, Marathon agreed to measures outside of the DHOUP permit that further minimize emissions and enhance operation and/or communications with the local community. Items completed in 2009 include:

  • Additional pollution control equipment was installed on a fluid catalytic cracking unit to reduce refinery emissions by nearly 10 percent.
  • One of four ambient air monitors will be located at a school near the refinery. 
  • The permit was modified to reflect enhanced monitoring and reporting requirements for several point sources. Commitments included (but were not limited to) installing four additional continuous emissions monitors not mandated by regulation. 
  • One local community meeting was held concerning the Detroit HOUP project, including employment statistics, emissions and process technology scholarships. One meeting is planned in 2010.
  • Marathon agreed to fund 100 scholarships to city of Detroit residents through 2018 for obtaining process technology certification at designated local community colleges. Ten scholarships were granted in 2009.