Mark C. Pennington

After a clerkship with U.S. District Judge Barbara Crabb in the Western District of Wisconsin, Mark began his career in environmental law in 1986 with the Washington, D.C. office of Bryan Cave, where he developed an in-depth knowledge of hazardous waste law and regulation, representing trade associations and corporations in rulemaking, permitting, and compliance matters.

He moved to Bryan Cave’s New York office in 1987, and from there to the New York office of Morgan Lewis in 1990. At Morgan Lewis, he handled a broad array of projects, including cleanups before local, state and federal agencies; multi-party Superfund proceedings; proactive compliance counseling (solid and hazardous waste, clean air, clean water, community right-to-know); compliance audits; environmental management systems; permitting and enforcement proceedings; litigation of insurance recovery and tort cases; and due diligence and contract negotiation in business transactions.

He created Mark C. Pennington LLC in July 2006 to concentrate on his key interests, and to pursue his passion for land conservation and sustainability. In November of 2007, he joined the law firm of John E. Osborn P.C. as Of Counsel. This affiliation enables him to draw upon the resources of a talented group of senior and junior practitioners with complementary skills.

Contact Mark C. Pennington

Contact Mark C. Pennington

Mark C. Pennington LLC
841 Broadway
Suite 500
New York, New York  10003
Phone: (917) 546-0747
Fax: (212) 686-4023


Service Area

Statewide service provider in:
  • New York