Marc Weinreich

Marc Weinreich Headshot

Vice President, Managing Principal, and Cofounder


Marc Weinreich is the cofounder and vice president of Greenfield Environmental Trust Group, Inc. and vice president of Resources for Responsible Site Management, Inc. (Trustee of the Industri-plex Superfund Site Custodial Trust). Marc also serves as a managing principal of the Montana Environmental Trust Group LLC (Trustee of the Montana Environmental Custodial Trust), comanaging principal of Greenfield Environmental Multistate Trust LLC (Trustee of the Multistate Environmental Response Trust), and comanaging principal of Greenfield Environmental Savannah Trust LLC.


Multidisciplinary Expertise

Marc has overseen water treatment plant optimization, dense nonaqueous phase liquid (DNAPL) extraction programs, site-wide Resource Conservation and Recovery Act (RCRA) facility investigations, institutional controls inaugurations, and multiple Superfund and brownfield reuse initiatives. He has successfully managed site demolition and recycling of former chemical facilities, generating millions in salvage dollars for cleanup, and has run the multiyear operations of a 30-employee (including 15 union members) sulfuric acid plant in Savannah, Georgia, under a $28 million annual operating budget, producing and selling 300,000 tons of high-grade sulfuric acid a year. Under Marc’s oversight, the previously bankrupt acid plant made $2 million–$4 million of net revenue a year, with the profit being put back into Greenfield’s Savannah Trust for future environmental actions.


Leader, Collaborator

Marc has overall project, cleanup, and disposition management responsibility for hundreds of contaminated CERCLA (Superfund), RCRA, mine-scarred, and state and other hazardous waste sites throughout the country. He collaborates as Trustee with state and federal remedial project managers, senior environmental staff, state attorneys general offices, and the U.S. Department of Justice. Marc comanages Greenfield’s environmental and financial programs and oversees Greenfield’s treasury, insurance, legal, and property sale functions. He chaired the Anadarko Litigation Trust Advisory Board—the entity charged with prosecuting and settling for $5.14 billion in the fraudulent conveyance litigation against Anadarko. Marc has spoken at national, regional, and local conferences on the environment, published opinion-editorial articles on current environmental matters, and has garnered two national Phoenix Awards for the management and revitalization of federal Superfund sites.

Marc is a trained mediator. He was recently named and listed as a member of the National Roster of Environmental Conflict Resolution Professionals by the U.S. Institute for Environmental Conflict Resolution. The U.S. Institute was established by Congress to provide impartial collaboration and conflict resolution services. The National Roster serves as a resource for federal agencies and others seeking to identify professionals experienced in environmental problem-solving.

Marc relocated to Utah from Boston, Massachusetts, to be more proximate to Greenfield Trust properties in the western United States. A certified power vinyasa yoga teacher, he coowns and cofounded Salt Lake Power Yoga, Salt Lake City’s first local, heated, power vinyasa yoga studio.



Before cofounding Greenfield, Marc worked as a complex commercial transaction lawyer for the prestigious, national Boston-based law firm of Gaston & Snow. Marc served as a summer associate with the Office of the Attorney General of the Commonwealth of Massachusetts. Marc graduated from Columbia University with Master of Art and Master of Philosophy degrees in Humanities and Comparative Literature. As a professor in the English and Humanities Departments at Columbia University and Pace University, he taught undergraduates the nuances of Plato, Machiavelli, and Freud, among other things. Subsequently, Marc graduated from Boston University School of Law, where he was a Paul J. Liacos Scholar and executive editor of the Annual Review of Banking Law.

Michael Orifounder