Board of Directors


John Holmes, Chair

John Holmes is President of AEMS, LLC and provides consulting services in the areas of environmental compliance and air pollution permitting. John has over 40 years of experience in… Read more
Randy Benn

D. Randall Benn, Vice-Chair

Randy Benn is a seasoned lawyer, lobbyist and strategic consultant in Washington D.C., has been a Partner in two of the world’s largest law firms, and recently co-founded the… Read more

Scott C. Plein, Treasurer

Scott C. Plein is the founding principal of Equinox Investments, LLC, a real estate investment, development and management firm specializing in community planning, entitlements and project development. A lifelong resident… Read more
Peter Bross, MD

Peter Bross, MD, Secretary

Peter has a BA and MD from the University of Virginia and works for the Federal Government (FDA). He grew up next to the Potomac River in McLean, VA… Read more

Carol Ackerman

The protection, preservation, and improvement of water systems have been life-long passions for Carol Ackerman. Born the granddaughter of Art Flick, an internationally renowned fly-fisherman and New York state… Read more
Ann Codrington

Ann Codrington

Ann is the owner of Nisani Farm in Phenix, VA, where she produces Certified Naturally Grown specialty ginger, turmeric, flowers, vegetables and value-added products. In the past, she was Director,… Read more

Brent Blackwelder

Brent Blackwelder graduated summa cum laude from Duke University. He has master’s degree in math from Yale and doctorate in philosophy from the University of Maryland. He teaches part-time… Read more

Sally Davidson

Sally Davidson is Chairman of the Board of Clyde’s Restaurant Group, which was founded by her late husband Stuart. Clyde’s has restaurants in Washington, DC, Maryland and Virginia. She… Read more

Katherine Edwards

Kathie is an energy law attorney and has been in private practice for over thirty years specializing in natural gas and oil regulation before the Federal Energy… Read more

Thomas P. Ehrhard, Ph.D.

Tom just returned to the private sector after over seven years as a strategy advisor to the most senior executives in the Department of Defense. Most recently, he served… Read more
William Guerry, Jr.

William Guerry, Jr.

Bill Guerry co-chairs the Environmental Law group at Kelley, Drye, and Warren. Bill is a nationally recognized lawyer in Clean Air Act compliance. For over three decades, Bill has… Read more

Tim Hill

Born and raised in Rockville, MD, Tim has lived within the Chesapeake watershed for most of his life. His passion and commitment to the environment come from his dedication… Read more

Dave Hunke

Dave Hunke is former CEO and Publisher of USA Today with over 40 years of publishing experience is the news and media business. In Dave’s role at USA Today/Gannett… Read more
Nick Kuttner

Nick Kuttner

Nick Kuttner has been focused on DC-area community and advocacy issues for many years. He provides strategy and technology consulting services to nonprofit organizations and he serves on the… Read more

Lydia Lawrence

Lydia is a healthcare professional and outdoor enthusiast, who has lived and worked in the Potomac watershed her entire life. Her journey toward environmental justice began… Read more

Pat Munoz

Pat is currently retired and spends her time volunteering for a number of river groups, traveling with her partner, Dorcas, and playing with her children and grandchildren. From 1994… Read more

Greg Parrilli

Greg Parrilli is a PwC Audit Director on the PwC Private team where he focuses on providing audit related services to private companies, as well as connecting his clients… Read more
Rick Peterson

Rick Peterson

William E. “Rick” Peterson serves as the Chairman of the Investment Board which oversees all non-real estate assets of Peterson Companies, which also owns National Harbor. His leadership role at… Read more

Stuyvesant Pierrepont

Born and raised in Long Island, NY, Stuyve has developed a true passion for the environment over the years through hunting and fishing trips with his father. In high… Read more

Shelley Slade

Shelley R. Slade is a member of Vogel, Slade & Goldstein, LLP. Ms. Slade’s practice focuses primarily on the representation of qui tam plaintiffs in False Claims Act actions… Read more

Mac Thornton

Mac Thornton, an avid kayaker since the 1970’s, started his river conservation avocation by founding the West Virginia Rivers Coalition in 1989, and serving as its Board Chair for… Read more
Tony Wu

Tony Wu

Anthony (Tony) Wu joins us as paddler (past U.S. Canoe & Kayak Marathon Team member) and recent power boater on the Potomac, with experience in spacecraft,… Read more