Thomas A. Mackie

Senior Counsel


Thomas Mackie is one of the preeminent attorneys in the field of environmental law, having spent almost four decades representing clients facing complex environmental issues. His work has focused on permitting and siting of solid waste, recycling, and renewable energy facilities; cleaning up hazardous waste; acquiring brownfields properties; drafting and contracting for private and public environmental projects; recovering costs under CERCLA and M.G.L. c. 21E; pursuing insurance claims for environmental damages; and litigating permit appeals.

Tom helps clients to develop strategies that address regulator and public concerns over the siting or expansion of controversial facilities. Purchasers and developers of renewable energy facilities, such as solar, landfill gas, biomass, anaerobic digestion, and biofuel manufacturers, rely on Tom to advise on required permits and approvals. In addition to handling the state and local permitting required for these and other projects, he assists clients with renewable energy credits, contracting, financing, and public procurement issues.

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J.D., cum laude, Suffolk University Law School

B.S., Biology, Hobart College



New York

honors & awards

Lawdragon Green 500: Leaders in Environmental Law (2023, 2024)

Steven G. Lewis Award for Service to the Environmental Industry, Environmental Business Council

Best Lawyers in America© Best Lawyer, Environmental Law, Litigation – Environmental (2006-2024)

Chambers USA – Band 2 Massachusetts Environmental Law

Massachusetts Super Lawyers (2004-2023)

community involvement

Commonwealth of Massachusetts MassDEP, Solid Waste Advisory Committee

Keep Massachusetts Beautiful, President of the Board of Directors


Environmental Business Council on New England, Board Member

National Waste & Recycling Association (Boston Chapter)



“Massachusetts’ path to reduced waste hitting barriers”, Quoted, Construction & Demolition Recycling, February 2024

speaking engagements

“Regional and National Trends in the C&D Industry”, Panel Moderator, EBC 17th Annual Construction and Demolition Materials Management Summit, January 2023