Atty. David G. Mandelbaum
David G. Mandelbaum represents clients facing problems under the environmental laws.
Profile Summary
About David G. Mandelbaum at a glance
David G. Mandelbaum is a Shareholder; Co-Chair, Environmental Practice based in Philadelphia, Pennsylvania, practicing at Greenberg Traurig, LLP. Their practice focuses on personal injury, litigation, environmental, government, and energy. Educated at Harvard Law School (J.D., 1983) and Harvard College (A.B., 1980). Recognitions include AV Preeminent. Serands clients in Philadelphia, PA and the surrounding metropolitan area.
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About
- David G. Mandelbaum represents clients facing problems under the environmental laws
- He regularly represents clients in lawsuits and also has helped clients achieve satisfactory outcomes through regulatory negotiation or private transactions
- A fellow of the American College of Environmental Lawyers, David teaches Superfund, and Oil and Gas Law in rotation at the Temple University Beasley School of Law as well as an environmental litigation course at Suffolk (Boston) Law School
- Mr. Mandelbaum has been engaged in matters involving allocation of costs among responsible parties, especially under the Comprehensive Environmental Response, Compensation and Liability Act (CERCLA)
- He has tried large cases and resolved others as lead counsel
- He has written, spoken, and taught extensively on the subject
- He also has been engaged to assist lead counsel from this firm and others: •to develop cost allocation methodologies
- •to craft expert testimony in support of a favored methodology (given a definition of “fairness,” why one methodology better tracks it than another)
- •to develop efficient case management approaches
- •to manage portfolio of contaminated properties and related risks and litigation
- and •to assist private allocation as part of a neutral team
- Mr. Mandelbaum has advised clients on specific compliance and enforcement questions, and broader issues of compliance management systems, sustainability policies, and, more recently, strategies concerning “ESG.” He has been engaged to assist in the development of offshore wind and onshore alternative energy projects as well as the redevelopment of contaminated properties
- Judicial Clerkships •Hon
- Louis H. Pollak, U.S
- District Court for the Eastern District of Pennsylvania Recognition & Leadership Awards & Accolades •Honoree, Pennsylvania Bar Association Environmental and Energy Law Section, 'Environmental Law Lifetime Achievement Award,' 2022 •Listed, Chambers USA Guide, 2003-2025 (Band 1 in each edition) •Listed, The Best Lawyers in America, Environmental Law
- Litigation - Environmental
- Water Law, 2006-2026 •'Lawyer of the Year,' Litigation - Environmental, Philadelphia, 2016 and 2024 •'Lawyer of the Year,' Environmental Law, Philadelphia, 2015 and 2018 •Listed, Who's Who Legal, 2013-2022 •Thought Leaders - USA, Environment, 2023 •Global Leader, Environment, 2013-2022 •Listed, Euromoney's Expert Guide to the World’s Leading Experts in Environmental Law, 2017-2021 •Listed, The Legal 500 United States, 2014-2025 •Environment - Litigation, 2014-2024 •'Recommended Lawyer,' 2022 and 2024 •'Other Key Lawyer,' 2022 and 2023 •Environment - Regulatory, 2018-2024 •'Other Key Lawyer,' 2022 and 2023 •Dispute Resolution - Product Liability, Mass Tort and Class Action - Toxic Tort - Defense, 2018-2019, 2021, and 2024-2025 •Listed, Boston magazine, 'Top Lawyers - Land Use Environment,' 2022-2023 •Listed, Super Lawyers magazine, Pennsylvania Super Lawyers, 2004-2025 •Team Member, Law360 “Environmental Practice Group of the Year,” 2022 •Team Member, The American Lawyer’s “Regional Litigation Department of the Year - Pennsylvania,” Finalist, 2018 •Team Member, U.S
- News - Best Lawyers , Best Law Firms Edition, 'Law Firm of the Year,' Environmental Law, 2016 •Selected, National Law Journal magazine, 'Energy & Environmental Trailblazer,' 2015 •Rated, AV Preeminent 5.0 out of 5.0
Practice Areas Explained
David G. Mandelbaum's Areas of Practice
Each practice area below reflects the types of cases David G. Mandelbaum handles, with a brief overview of what that area of law covers.
Personal injury attorneys help accident victims recover compensation for medical bills, lost wages, and pain & suffering. Most work on contingency — no fee unless you win.
David G. Mandelbaum is one of 264,852 personal injury attorneys indexed nationally. Browse personal injury attorneys in Pennsylvania →
Civil litigation attorneys for breach of contract, business disputes, civil rights, and class action lawsuits.
David G. Mandelbaum is one of 454,532 litigation attorneys indexed nationally. Browse litigation attorneys in Pennsylvania →
Environmental attorneys for regulatory compliance, contamination, land use, and natural resource law.
David G. Mandelbaum is one of 56,434 environmental attorneys indexed nationally. Browse environmental attorneys in Pennsylvania →
Attorneys for administrative law, agency hearings, government contracts, licensing, and public benefits.
David G. Mandelbaum is one of 132,225 government attorneys indexed nationally. Browse government attorneys in Pennsylvania →
Energy attorneys for oil & gas, renewables, utility regulation, and energy sector transactions.
David G. Mandelbaum is one of 36,230 energy attorneys indexed nationally. Browse energy attorneys in Pennsylvania →
Jurisdictional Context
Why local counsel matters in Pennsylvania
Practicing law in Pennsylvania. Legal matters in Pennsylvania are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Philadelphia are typically filed in the local municipal court or the appropriate Pennsylvania state district court, depending on subject matter and amount in controversy. An attorney licensed in Pennsylvania brings working knowledge of local procedural deadlines, judicial practices in this andnue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in Pennsylvania courts without local counsel or pro hac vice admission.
Looking for additional Pennsylvania attorneys? Browse all attorneys in Philadelphia or all attorneys in Pennsylvania.
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