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Mark J. Steger

Senior Counsel
fax +1 312.985.5964

Mark J. Steger assists clients in navigating the maze of environmental laws and regulations impacting their businesses. He has worked with many clients over the years on air, water, chemical regulation, and solid and hazardous waste matters on the federal, state, and local levels, including administrative enforcement matters.

Mark relies upon his extensive experience with environmental regulations in all environmental media to counsel and represent industrial and commercial clients in environmental compliance, transactional, and litigation matters.

With respect to air permitting, he has been actively involved in both minor and major source matters in both attainment and nonattainment areas throughout the country under Title V of the Clean Air Act and similar state statutes. These matters involve both criteria pollutants as well as hazardous air pollutants and greenhouse gases.

Mark has also been involved in water permitting matters involving industrial and municipal process wastewater discharges, as well as storm water discharges under the National Pollutant Discharge Elimination System and Pretreatment programs under the Clean Water Act and similar state statutes.

Mark has assisted clients with solid and hazardous waste matters including permitting, closure, and post-closure care, as well as corrective action matters and beneficial use determinations under the Resource Conservation and Recovery Act and similar state statues.

In commercial transactions on environmental due diligence matters, Mark helps clients understand the environmental transactional risks and provides solutions to meet clients’ objectives. He helps address environmental issues in a variety of ways including voluntary cleanup programs, as well as insurance and contractual provisions. Mark has been involved in Brownfield projects involving sites that have environmental issues that need to be resolved as part of their commercial or residential redevelopment.

Mark represents clients in matters involving the Comprehensive Environmental Response, Compensation, and Liability Act (Superfund) and similar state statutes. In addition, he assists clients in responding to requests for information from the government and negotiating settlement agreements with federal and state agencies. He also has served as common counsel for Steering and Allocation Committees and for cost recovery/contribution litigation.

Mark counsels clients in connection with chemical management, labeling, reporting, and similar requirements related to clients’ operations and products, including those under the Emergency Planning and Community Right-to-Know Act (EPCRA), the Toxic Substances Control Act (TSCA), and the European Union’s Registration, Evaluation, Authorization, and Restriction of Chemicals (REACH) regulation.

Mark provides compliance counseling and enforcement defense to clients related to the employee health and safety matters under the Occupational Safety and Health Act, including the Process Safety Management standard and the Risk Management Program rule (RMP) under the Clean Air Act.


J.D., Seattle University School of Law, Seattle, Washington
M.S., University of Illinois at Urbana-Champaign, Champaign, Illinois
B.S., University of Illinois at Urbana-Champaign, Champaign, Illinois


Named a Leading Lawyer in Illinois by Leading Lawyers℠ (2022)

State Bar Licenses


Court Admissions

U.S. Court of Appeals, 7th Circuit
  • “The future of energy and environmental policy under President Donald J. Trump,” The Illinois Manufacturer Magazine, Winter 2017
  • Illinois Hydraulic Fracking Bill Becomes Law, Holland & Knight Alert, July 16, 2013
  • Illinois Proposes Soil Vapor Intrusion Requirements, Holland & Knight Newsletter, Fourth Quarter 2008
  • Supreme Court Decision Turns Up the Heat on Greenhouse Gas Regulation, Holland & Knight Newsletter, Second Quarter 2007
  • Recent State Right-to-Know Laws Focus on Individual Property Owners, Holland & Knight Newsletter, Fourth Quarter 2006
  • D.C. Circuit Vacates Equipment Replacement Rule, Holland & Knight Newsletter, May 4, 2006
  • New Illinois Pollution Notice Law Gives the IEPA New Authority, Holland & Knight Newsletter, First Quarter 2006
  • Illinois Adopts Brownfield Site Restoration Regulations, Holland & Knight Newsletter, April 15, 2004
  • Illinois Amends Petroleum Underground Storage Tank Program, Holland & Knight Newsletter, September 6, 2002
  • Current Issues in Storm Water Regulation in Illinois, Lorman Education Services Seminar, January 23, 2013