Practice Areas


Our attorneys have comprehensive experience in all aspects of environmental law.




We routinely advise on safety compliance issues, permitting, audit protocols and enforcement actions


We have decades of experience defending and trying toxic tort cases.



Our team has litigated a wide variety of environmental, corporate, product liability and commercial matters.

MD Attorneys to present at OSBA Environmental Law Seminar

The 33rd Annual OSBA Environment, Energy and Resources Law Seminar, one of OSBA’s largest, packs a host of hot legal topics into two busy days of meetings on April 12 and 13, 2018. MD attorneys are key parts of 4 presentations.

On April 12, Keely O’Bryan will guide the “Parks and Recreation: Ohio Style” discussion featuring Kyle Baker of the Cleveland Metroparks, John Hoopingarner from the Muskingum Watershed Conservancy District, and others. Later that afternoon, Lou McMahon will moderate “Drinking Water: Public Health Priority,” a discussion with Ohio EPA Legal and Greater Cincinnati Water Works that will address new lead and copper rules and other emerging issues.

Toxic Blobs and Ohio Jobs: Ohio v. USACE and the Future of Lake Erie Dredge Management” on April 13 will feature Lou McMahon on a panel with attorneys David Emerman, of the Ohio Lake Erie Commission/Ohio EPA, and Janean Weber, of the Ohio Attorney General’s Office, to discuss the successful litigation. Following lunch, Andrea Salimbene will facilitate the discussion “Beyond Diversity to Inclusion: Integrating, Valuing, Empowering,” which is available for professional conduct hours. Andrea also launched this year’s Ambassador Program as a diversity and inclusion project that will connect seminar newcomers with a seasoned participant.

Register Here

Greg DeGulis Delivers 6th Circuit Oral Argument

On January 31, 2018, Greg DeGulis delivered an oral argument in the U.S. Court of Appeals for the Sixth Circuit in Cincinnati. Greg, along with co-counsel Erin McDevitt-Frantz, represents the City of Green in a challenge to Ohio EPA’s issuance of a 401 Water Quality Certification for the Nexus Pipeline.

Learn More About Greg's Work

OSBA Environmental Law “Call for Papers” Winner to be Announced April 12

The OSBA Environmental Law Call for Papers winner will be announced on April 12, 2018.  This annual, competitive scholarship award is announced each year at the OSBA’s Environmental, Energy and Resources Law Seminar, one of the largest seminars OSBA offers with roughly 200 attorneys from the public and private sectors attending each year. Winning papers are published in seminar materials.

The OSBA Environmental Law Award call for papers seeks manuscripts that advance the application and practice of environmental, energy or resources law in Ohio. The winner of this contest will receive the OSBA Environmental Law Award and a prize of $1,000, donated by McMahon DeGulis LLP. MD is pleased to collaborate with OSBA to sponsor and promote this contest.

Learn More

Environmental Law Network recognized by Chambers Global

The Environmental Law Network (ELN) received a Band 1 ranking in Environment in the Chambers 2018 Global Guide. The Environmental Law Network is the only environmental law network to be globally recognized by Chambers and Partners.

ELN is the first environmental law firm network that makes local environmental legal representation available nationwide. ELN also has foreign affiliates in Argentina, Brazil, Canada, Columbia, France, Italy, Mexico, Spain and the United Kingdom. Greg DeGulis, Partner at McMahon DeGulis, currently serves as Chair. ELN provides significant benefit to MD clients, especially when the situation calls for an attorney in another jurisdiction with strong local connections.

Learn More About ELN

MD Attorneys Selected to 2018 Ohio Super Lawyers and Rising Stars Lists

Gregory DeGulis and Louis McMahon were selected to the 2018 Ohio Super Lawyers list. Each year, no more than five percent of the lawyers in the state are selected by the research team at Super Lawyers to receive this honor.

Erin McDevitt-Frantz and Andrea Salimbene were selected to the 2018 Ohio Rising Stars list. Each year, no more than 2.5 percent of the lawyers in the state are selected by the research team at Super Lawyers to receive this honor.

The Super Lawyers lists are published nationwide in Super Lawyers Magazines and in leading city and regional magazines and newspapers across the country. Super Lawyers Magazines also feature editorial profiles of attorneys who embody excellence in the practice of law. For more information about Super Lawyers, visit

Learn More About Our Attorney Recognitions