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Mayer Brown

1999 K STREET, NW, WASHINGTON, DC 20006-1101, USA
Tel:
Work +1 202 263 3000
Fax:
Fax +1 202 263 3300
Email:
Web:
www.mayerbrown.com

John Hahn

Tel:
Work +1 202 263 3346
Email:
Mayer Brown

Work Department

Litigation

Position

John Hahn's practice encompasses a wide variety of environmental counseling and litigation matters. Often these have involved contaminated sites and issues of successor liability. He also has extensive experience with environmental challenges to real estate development and the allocation of environmental liabilities in corporate and real estate transactions. John received the Oak Leaf Award from The Nature Conservancy in 1991 for his pro bono work in support of TNC's conservation projects. He joined Mayer Brown as a partner in 2000.

Education

Yale Law School, JD, 1977 Duke University, AB, magna cum laude, 1974


United States: Industry focus

Environment: litigation

Within: Environment: litigation

Mayer Brown’s ‘service is extremely good’. The team acts in high-stakes matters, such as air enforcement cases involving the CAA New Source Review program, criminal environmental prosecutions, and major development projects. It represented several industry groups in challenging the legality of the EPA’s new regulation defining the waters of the US. The team also defended CSX Transportation in several environmental tort lawsuits that alleged personal injuries and property damage resulting from the 2012 derailment of a Conrail train. The practice’s co-chairs are Chicago-based Richard Bulger, who acts for clients in the chemical, utility, scrap metal, railroad, and ranching industries, and Mark Ter Molen, whose experience includes toxic tort trials and appeals, as well as putative class actions. Also in Chicago, Timothy Bishop has substantial experience in environmental and land use litigation; in Washington DC, ‘the extremely knowledgeableJohn Hahnalways has the client’s best interests at heart’; and Dan Himmelfarb and Evan Tager, and counsel Roger Patrick, are also widely praised.

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