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Caleb’s practice focuses on complex environmental litigation and environmental compliance. Caleb has represented clients in state and federal courts and in administrative proceedings. In his environmental litigation practice, Caleb often represents corporate clients in cost recovery, contribution and government enforcement actions under Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA). Caleb has litigated such matters through trial and has also helped clients negotiate and settle matters. He has worked with clients on cases involving a wide variety of contaminants, including but not limited to PCBs, PFAS, and dioxins. Caleb also has broad experience litigating complex commercial litigation, including products liability and mass tort/toxic tort matters. He has a depth of experience with all aspects of discovery, including work with experts, taking and defending depositions, motion practice, trial preparation and settlement negotiation.

Caleb provides practical advice to clients in the acquisition and disposition of businesses and assets and the re-development of brownfield sites. He works with clients to achieve compliance with state-specific voluntary cleanup programs, including Pennsylvania’s Land Recycling Program (Act 2).

Caleb counsels clients on compliance with a broad range of federal and state environmental laws, including RCRA, the Clean Air Act, the Clean Water Act, and a host of other federal and state environmental laws.

In addition to his legal work, Caleb is active in various professional and civic organizations. He is currently serving as the Council’s Secretary for the Pennsylvania Bar Association’s Environmental and Energy Law Section.


  • Air, water and waste regulation
  • Superfund and contamination
  • Oil and gas development



  • Represented paper manufacturer in enforcement, cost recovery, natural resources damages, and contribution litigation arising from the Lower Fox River and Green Bay Superfund site. NCR Corp. v. Geo. A. Whiting Paper Co., No. 2:08-cv-16 (E.D. Wis.); United States v. P. H. Glatfelter Co., No. 2:10-cv-910 (E.D. Wis.).
  • Represented pesticide manufacturer in litigation over selection of RCRA corrective action for arsenic in soils. FMC Corp. v. NYSDEC, 101 N.E.3d 379 (N.Y. 2018), and related federal and administrative litigation.
  • Represent defendant in contribution litigation related to the Centredale Manor Superfund Site. Emhart Industries, Inc. v. New England Container Company, Inc. et al., Civil Action No. 06-218-S, and Emhart Industries, Inc. v. U.S. Department of the Air Force et al., Civil Action No. 11-023-S (D.R.I.).
  • Represent former owner of an Illinois oil refinery in contribution litigation under CERCLA for costs of actions to address groundwater contamination at the facility and in the surrounding area. Premcor Ref. Grp. Inc. v. Apex Oil Co., Inc., No. 3:17-cv-738 (S.D. Ill).
  • Represent client in voluntary cleanup of contaminated property under Pennsylvania Land Recycling Act and negotiation of Buyer-Seller Agreement with purchaser and Pennsylvania Department of Environmental Protection.

Recognition & Leadership

  • Listed, The Best Lawyers in America
    • Environmental Law, 2024
    • Litigation - Environmental, 2024
  • Team Member, a Law360 "Environmental Practice Group of the Year," 2022
  • Listed, Super Lawyers magazine, Pennsylvania Super Lawyers, "Rising Stars," 2014-2020
  • Listed, The Legal 500 United States, Industry focus - Environment - Litigation, 2018-2019
  • 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
  • Member, American Bar Association
  • Member, Pennsylvania Bar Association
    • Vice Chair, Environmental and Energy Law Section, 2023-Present
    • Council Member, Environmental and Energy Law Section
  • Member, Delaware Valley Environmental Inn of Court
    • Secretary, 2023-Present


  • J.D., cum laude, Vermont Law School, 2007
    • Notes Editor, Vermont Law Review
    • Member, National Moot Court Team
    • Member, Moot Court Advisory Board
  • Master of Studies in Environmental Law, magna cum laude, Vermont Law School, 2007
  • B.A., Middlebury College, 2003
  • Law Clerk, Hon. Chief Judge Anthony J. Scirica, U.S. Court of Appeals for the Third Circuit
  • Pennsylvania
  • U.S. Court of Appeals for the Seventh Circuit
  • U.S. Court of Appeals for the Third Circuit
  • U.S. District Court for the Eastern District of Pennsylvania
  • U.S. District Court for the Eastern District of Wisconsin
  • U.S. District Court for the Middle District of Pennsylvania
  • U.S. District Court for the Western District of Pennsylvania