Skip to main content
John S. Hahn

John S. Hahn

T +1 202 263 3346
F +1 202 263 5346
  • RSS Icon

“‘[E]xtremely knowledgeable and hardworking[,]’ [he] is a ‘tireless negotiator’ who regularly defends clients in enforcement actions.”

Chambers USA 2018

John Hahn's practice encompasses a variety of high-stakes environmental counseling and litigation matters. These have involved defense against federal and state enforcement actions and challenges to rulemaking authority, as well as private-sector disputes over contaminated sites and issues of successor liability. He has extensive experience with environmental challenges to real estate development and the allocation of environmental liabilities in corporate and real estate transactions. John is recognized by Chambers USA for Environmental Law. John received the Oak Leaf Award from The Nature Conservancy in 1991 for his pro bono work in support of TNC's conservation projects.

John has been appointed Special Master for In Re: Dicamba Herbicides Litigation, US District Court, EDMO, consolidated multi-district litigation involving claims arising out of the application of dicamba and the sale of dicamba-resistant seed (appointed June 2018).

The Build a Report feature requires the use of cookies to function properly. Cookies are small text files that are placed on your computer by websites that you visit. They are widely used in order to make websites work, or work more efficiently. If you do not accept cookies, this function will not work. For more information please see our Privacy Policy

You have no pages selected. Please select pages to email then resubmit.