Mr. Schweisberg provides policy, regulatory and technical advice and assistance for clients seeking to navigate a wide range of regulatory and non-regulatory issues related to wetlands and other aquatic resources. He works throughout the U.S. Mr. Schweisberg is a Professional Wetland Scientist under the Professional Certification Program of the Society of Wetland Scientists. He is a retired federal wetlands ecologist and wildlife biologist who spent over 32 years with the U. S. Environmental Protection Agency at its headquarters office in Washington, D.C., and at the New England Region office in Boston. Mr. Schweisberg served as chief of the New England Region’s Wetlands Protection Program, as senior wetland ecologist, and on national work groups developing guidance and regulations on Clean Water Act jurisdiction, among other issues. He has testified before federal grand juries and has served several times as an expert witness in federal, state, and private litigation. Mr. Schweisberg has taught courses in wetland regulation, restoration, and creation; wetland ecology; and wetland identification and delineation for federal and state agencies, academic organizations, and environmental consultants. He received his degree in Wildlife Management from the University of Maine.

Shareholder, Mackie Shea P.C.
Mr. Shea has practiced environmental and land use law for over 35 years. He focuses on wetlands, water, wildlife and hazardous waste laws. Mr. Shea is recognized as a master strategist in securing approvals for complex and controversial projects, developing environmental compliance plans for proactive and troubled companies and successfully defending permits in administrative and court appeals. He represents developers, businesses and high net worth individuals in permitting, siting, enforcement defense and litigation. Mr. Shea’s development projects include coastal homes, subdivisions, subsidized housing, hotels, assisted living facilities, hospitals, colleges, banks, coastal erosion protections, docks, marinas, aquaculture farms, radio antennas, industrial plants, office parks and retail complexes. He is recognized as a leader in environmental and land use law by Chambers USA’s America’s Leading Lawyers for Business. The 2013 edition described Mr. Shea as a “Dean of the Environmental Bar;” the 2014 edition reported “there’s nothing he hasn’t seen or done;” and the 2019 edition observed that “he is great at permitting disputes as well as working effectively with regulators to reach a compromise.” He was selected as the 2013 Boston Environmental Law “Lawyer of the Year” by The Best Lawyers in America®, and as one of the four best environmental lawyers in New England. Since 2004, he is designated a Massachusetts and New England SuperLawyer by Boston Magazine and Thomson Reuters. Mr. Shea enjoys an AV Preeminent rating for the highest levels of professional excellence from Martindale-Hubbell. He chairs professional programs and lectures to lawyers, engineers and business groups. Mr. Shea is a member of The Planetary Society and The Mars Society and lectures on space law.