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.

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.

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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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Greg DeGulis Elected as Fellow to ACOEL

Congratulations to Greg DeGulis, who is one of only 24 attorneys nationwide elected in 2018 to the American College of Environmental Lawyers.  This professional organization is comprised of distinguished private practitioners, government lawyers and academics who practice in the field of environmental law.

Membership is by invitation only and individuals are selected by their peers based on criteria that show members to be preeminent in the field. Members are dedicated to maintaining and improving the ethical practice of environmental law; the administration of justice; and the development of environmental law at both the state and federal level. Learn more about the ACOEL at

Greg’s 32 years of experience include prosecuting and defending environmental and toxic exposure claims. He has significant experience in environmental cost recovery matters, environmental insurance litigation, construction litigation and wetlands cases.

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Greg DeGulis and Lauryn Kitchen published in ABA Committee Newsletter

Gregory DeGulis, Partner, and Lauryn Kitchen, Law Clerk, authored an article published in the June issue of the American Bar Association Section of Environment, Energy and Resources In-House Counsel Committee newsletter. Titled Gasoline, Diesel, and Oil: Recent Case Developments and the Avenues for Cleaning Up Sites Contaminated by Petroleum, the article reviews recent RCRA case law involving petroleum and also considers the use of Clean Water Act citizen suits to bolster the argument for cleanup.

Read the Article