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.

Sandra Becher Sommers Joins MD as Partner

McMahon DeGulis is pleased to welcome Sandra Becher Sommers.  Sandra joins the firm’s Cleveland office as a Partner and will continue her litigation practice focusing on toxic tort and environmental cases, as well as workers’ compensation.

Sandra has over 30 years of experience in  civil  litigation,  including toxic  torts,  occupational  disease  matters,  asbestos  exposure claims, and  environmental  matters. She has appeared in various courts throughout the country in asbestos litigation as national counsel for a Fortune 500 company and has assisted in trials of mesothelioma cases.  Sandra served as trial counsel in a case involving CERCLA, EPCRA and RCRA claims related to power plant emissions and controls that resulted in a settlement agreement after several days of trial in federal court.

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6 MD Attorneys Recognized in The Best Lawyers in America© 2019

Congratulations to the 6 McMahon DeGulis LLP attorneys recognized in The Best Lawyers in America© 2019! Each attorney listed below was selected by his or her peers for inclusion in Best Lawyers 2019 in the indicated fields:

  • Mike McMahon: Environmental Law and Litigation-Environmental.
  • Greg DeGulis: Litigation-Environmental.
  • Dave Nash: Environmental Law, Litigation-Environmental, and Energy Regulatory Law.
  • Lou McMahon: Environmental Law, Litigation-Environmental, and Water Law.
  • Wendy Lavey: Environmental Law.
  • Keely O’Bryan: Environmental Law and Litigation-Environmental.

Since it was first published in 1983, Best Lawyers® has become universally regarded as the definitive guide to legal excellence. Best Lawyers lists are compiled based on an exhaustive peer-review evaluation. Lawyers are not required or allowed to pay a fee to be listed; therefore inclusion in Best Lawyers is considered a singular honor.

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Michael McMahon Named 2019 Litigation – Environmental “Lawyer of the Year” in Cleveland by Best Lawyers™

Congratulations to Michael McMahon, who has been honored by Best Lawyersas the 2019 Litigation – Environmental “Lawyer of the Year” in Cleveland. Only a single lawyer in each practice area and community is honored with a “Lawyer of the Year” award. Mike was recognized as a “Lawyer of the Year” in both 2011 and 2016 for his work in Environmental law in Cleveland. Mike has been recognized by The Best Lawyers in America™, the peer-reviewed publication, for Environmental Law since 2006 and Litigation-Environmental since 2011.

This is the 7th time in recent years that a McMahon DeGulis attorney has received a “Lawyer of the Year” in Cleveland distinction. Louis McMahon was recognized in both 2018 and 2015 as the Environmental “Lawyer of the Year” in Cleveland, as well as in 2017 with the Litigation-Environmental “Lawyer of the Year” distinction. Gregory DeGulis was recognized as the 2014 Litigation-Environmental “Lawyer of the Year” in Cleveland. David Nash was recognized as the 2013 Environmental “Lawyer of the Year” in Cleveland.

Learn more about Best Lawyershere.

Learn More About Mike's Work