Noted for its ‘interdisciplinary model that pairs deep regulatory fluency with sophisticated litigation and transactional support’, Lowenstein Sandler LLP has been active in CERCLA Superfund disputes, as well as being engaged in complex investigations involving multiple parties. Michael Lichtenstein oversees the practice, chiefly focusing on the defense of cost recovery and toxic tort claims. Kegan Brown ’has the perfect blend of administrative, technical, and litigation experience’, representing clients throughout the full lifecycle of complex environmental and product liability litigation. Mark Heinzelmann is well-versed in New Jersey enforcement and regulatory agendas. All individuals are based in New Jersey. Thomas Pearce joined the New York team in July 2026.
Legal 500 Editorial commentary
Testimonials
Collated independently by Legal 500 research team.
‘The Superfund litigation and counseling offered by Lowenstein is top-notch. They not only have extensive experience in the law, but they can readily apply useful tactics from other cases, and they also bring a great deal of technical and scientific expertise as well.’
‘They work very well with technical consultants and archivists to build your best defense. Finally, their advice on which issues to fight and which to settle is based on experience and focuses on the best interest of the client.’
‘Kegan Brown is an excellent environmental litigator who, for Superfund, has the perfect blend of administrative, technical, and litigation experience. He thinks ahead, is a great tactician, is aggressive but reasonable, and is very efficient.’
‘Taylor West is a great environmental litigation counsel. She's smart, experienced, well-organized, and efficient.’
‘The practice is distinguished by an interdisciplinary model that pairs deep regulatory fluency with sophisticated litigation and transactional support.’
‘The attorneys I collaborate with consistently deliver defensible work products and practical guidance that moves matters forward. Their strengths include agency navigation, structured collaboration with consultants, and transparent scoping that supports budgeting and schedule control.’
‘The Lowenstein team, led by Kegan Brown, provides top-notch environmental litigation support. They have an excellent knowledge of the complex law and applicable science, they think creatively and are highly strategic.’
‘Kegan Brown is truly an outstanding lawyer. He is the most strategic litigator I have worked with. His writing and work product are always excellent, he is always available and highly responsive, and he drives results.’
‘Great care and attention paid to clients. Subject matter expertise. ’
‘Kegan Brown is great. Forward thinker; strategic; bulldog; smart. Knows the subject matter. ’
Key clients
- Syensqo Specialty Polymers USA, LLC
- Paddock Enterprises, LLC
- Nokia of America Corporation
- Borough of Wildwood Crest
- The Chemours Company
- Ventron/Velsicol Customer Group
- Nature’s Choice Corporation, Harvest Garden State, TAS Recycling, Nicholas Vene
Work highlights
Represent Syensqo Specialty Polymers USA, LLC in defending against more than a dozen litigations brought by local water authorities in Georgia and South Carolina, relating to injuries allegedly caused by per- and polyfluoroalkyl substances in the plaintiffs’ drinking water supplies.
Represented Paddock Enterprises, LLC as plaintiff in litigation against the United States of America relating to contamination at the former Jaite Paper mill site located in the Cuyahoga Valley National Park in Ohio.
Represent Paddock Enterprises, LLC in defending against federal and state claims relating to environmental contamination at a former Paddock facility in Connecticut.
Lawyers
Leading associates
Leading associates with regular involvement in their team's key work, and recognition from peers or clients as being ones to watch.
Practice head
Michael Lichtenstein
Other key lawyers
Kegan Brown; Mark Heinzelmann; Thomas Pearce