Karthaus Environmental Lawyers

Chris is a founding member of Haberl, Buell & Rice, PLLC, where he focuses on oil and gas, real estate, corporate, litigation, and estate matters. Chris represents oil and gas operators in land issues, litigation, regulatory appeals, and general commercial matters. He also regularly represents businesses and individuals in civil litigation, real estate transactions, corporate formations and counseling, and estate planning and administration. Chris has been named a Rising Star by Pennsylvania Super Lawyers® from 2012 through 2020.

Bar Admissions
• Pa Supreme Court of Pennsylvania 2012 to Present
• United States District of Pennsylvania for the Western District of Pennsylvania 2012 to Present
• United States District Court District of Maryland 2015 to Present
o Greenbelt Division
o Baltimore Division
• Untied States Court of Appeals for the Third Circuit
2015 to Present
• United States Tax Court 2017 to Present
• Commonwealth of Pennsylvania Environmental Hearing Board
2012 to Present
• West Virginia Supreme Court of Appeals 2011-2012

Bar Pro Hac Vice
• United States District Court for the Middle District of Florida Fort Myers Division


Litigation in Experience Pennsylvania Court of Common Pleas

• Allegheny County
• Armstrong County
• Beaver County
• Bradford County
• Bedford...

Mark Wendaur serves as counsel in the firm’s Business Law & Transactions practice group. Mark maintains a broad corporate and transactional practice focusing on mergers and acquisitions, commercial agreements, corporate governance, venture capital transactions, and corporate restructurings. He also represents clients in commercial real estate and energy matters, including transactions, financing, land use, and zoning issues. Mark represents clients of all sizes, including individuals, closely held companies, investor groups, publicly traded companies, and government entities. He regularly provides strategic business counseling to these clients to help them achieve their goals and business objectives. Prior to joining Offit Kurman, Mark owned and operated...

Married; Father of six children. Avid outdoorsman, hunter and fisherman; member of sportsmen’s clubs, NRA and 4-H shooting sports instructor; local 4-H Club Leader 14 yrs; recipient of Boy Scouts of America Distinguished Citizen Award, 2013

David Cedar is the co-founder of Williams Cedar and prior founding member of the Cedar Law Firm, Merovitz & Cedar, L.L.P. and Merovitz, Cedar and Gruber., L.L.C. He is a graduate of Rutgers State University, School of Law, Camden (1992). He is admitted to practice in the bars of Pennsylvania (1993) and New Jersey (1992), along with various district courts and the United States Court of Appeals for the Third Circuit. David Cedar was appointed by the Supreme Court of New Jersey as a Certified Civil Trial Attorney (2001) a honor awarded to less than 1% of all attorneys...

David J. Brooman has more than three decades experience in zoning and land use development, as well as environmental law. His background includes negotiating creative solutions in complex land use and environmental disputes, during project development and litigation. He has also counseled public and private companies, developers and lenders, and municipal governments on the business risks and economic impacts of federal, state and local land use and environmental regulations. Brooman is well-versed in crisis management and controversial land uses.

Brooman’s engagements include serving as special environmental and land use counsel to a Pennsylvania municipality in its acquisition and redevelopment of a...

Russell S. Warner is the Managing Partner of the law firm of MacDonald, Illig, Jones & Britton LLP in Erie, Pennsylvania. He is the founder and past Chairman of the firm's Environmental Group. He concentrates his practice in the areas of business and environmental law, including matters involving the U.S. Environmental Protection Agency and the Pennsylvania Department of Environmental Protection, as well as matters before the USEPA Environmental Appeals Board and the Pennsylvania Environmental Hearing Board.

Mr. Warner's practice includes representation of businesses, financial institutions, economic development organizations and municipal entities regarding business and environmental matters, as well as acquisitions, capital...