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Township of Marple and the Scope of Agency Environmental Review Under the Environmental Rights Amendment

By David Mandelbaum on March 17, 2026
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In a closely watched case involving a natural gas “reliability station,” the Pennsylvania Commonwealth Court recently reiterated quite plainly that court’s narrow view of the Pennsylvania Environmental Rights Amendment, Article I, Section 27, of the Pennsylvania Constitution. See Township of Marple v. Pennsylvania Public Utilities Commission, No. 1385 C.D. 2024 (Pa. Commw. Ct. Feb. 2, 2026)(Marple II). The case had been to the Commonwealth Court already and the court had decided that a regulatory agency may not make a permitting decision without conducting some level of environmental review. See Township of Marple v. Pennsylvania Public Utilities Commission, 294 A.3d 965, 973-74 (Pa. Commw. Ct. 2023)(Marple I). However, Marple II read that constitutional obligation to be limited to the environmental impacts of the specific project without consideration of consequences of the project. Further, the court held that regulatory agencies implementing the Environmental Rights Amendment should stay in their own lanes and should defer to regulatory determinations of agencies charged with environmental protection.

Link to Read “Township of Marple and the Scope of Agency Environmental Review Under the Environmental Rights Amendment” authored by David G. Mandelbaum on The Legal Intelligencer website. (subscription). Read “Township of Marple and the Scope of Agency Environmental Review Under the Environmental Rights Amendment” authored by David G. Mandelbaum on The Legal Intelligencer website. (subscription).

Link to Click here to download the PDF. Click here to download the PDF.

*The opinions expressed in this column are those of the author and do not necessarily reflect the views of Greenberg Traurig or its clients.

Photo of David Mandelbaum David Mandelbaum

David G. Mandelbaum represents clients facing problems under 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…

David G. Mandelbaum represents clients facing problems under 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.

Since United States v. Atlas Minerals, the first multi-generator Superfund contribution case to go to trial in 1993, 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.  More recently 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; and to assist private allocation as part of the neutral team.

Concentrations

  • Air, water and waste regulation
  • Superfund and contamination
  • Climate change
  • Oil and gas development
  • Water rights
Read more about David MandelbaumEmailDavid's Twitter Profile
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  • Posted in:
    Environmental and Climate
  • Blog:
    E2 Law Blog
  • Organization:
    Greenberg Traurig, LLP
  • Article: View Original Source

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