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Mark J. Steger

Senior Counsel
fax +1 312.985.5964

Mark Steger assists clients in navigating the maze of environmental laws and regulations impacting their businesses. He 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.

Mark has worked with many clients over the years on air, water, chemical regulation, solid and hazardous waste, as well as climate change and site remediation matters on the federal, state, and local levels, including judicial and administrative enforcement matters. He has handled matters arising under a range of federal statutes, including the CAA, CWA, RCRA, CERCLA, TSCA, FIFRA, and EPCRA, as well as similar state statutes.

In addition, Mark assists clients with assessing and managing environmental, social, and governance (ESG) risks, including those related to environmental justice. He also 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 (PSM), and the Risk Management Program rule (RMP) under the CAA.

On commercial transactions pertaining to 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.


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 Chicago by Leading Lawyers℠ (2003-2024)

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