GreenTrust Alliance, Inc. is a non-profit environmental organization committed to completing complicated restoration projects and protecting land for the future by building unique public and private strategic partnerships to accomplish mutual goals.

© 2019 by GreenTrust Alliance, Inc.

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T: (443) 445-0068

E: kirk@greentrustalliance.org

6755 Business Pkwy, Suite 317

Elkridge, MD 21075


Executive Director

Kirk Mantay serves GTA as its Executive Director and Principal Ecologist in Elkridge, Maryland. Kirk is a certified Professional Wetland Scientist who has been restoring and preserving fish and wildlife habitat in Maryland, Virginia, Delaware and New Jersey since 1997. GTA’s strategy, staff, operations, and board governance are supported by Kirk’s efforts and he leads the organization in its key practice areas of large scale coastal resiliency, federal agency support, long term land stewardship, and consulting on wetland, stream, shoreline, and reef/shellfish restoration efforts. Kirk is most excited about the protection and enhancement of pre-Columbian ecosystems, including mangrove systems, coastal plain bogs, and bald cypress swamps. He has previously led habitat restoration programs for the Arundel Rivers Federation, Chesapeake Bay Trust, Ducks Unlimited, and wetland and stream mitigation consultants. Kirk serves as a Board Member for several state and national-level conservation organizations, and as a coach and commissioner for St. Pius X Boys Soccer in Towson, where he lives with his wife and son, in between outdoor adventures.


Environmental Scientist

Jeff is a certified Professional Wetland Scientist (PWS), and Certified Professional in Stormwater Quality (CPSWQ) with experience in applied river morphology, wetland restoration, and natural resource conservation. Jeff had a successful career in banking and finance, but obtained an advanced degree in Environmental Science and Biology and joined the ecological restoration industry about 10 years ago.  Jeff has since established himself as a talented and well-respected field biologist in the mid-Atlantic region. Jeff is actively engaged with multiple nonprofit watershed groups, serves on the Board of Directors for the Maryland Water Monitoring Council, and several professional associations. His knowledge and experience in environmental site assessment, permit processes and standards, and tools and techniques of ecological restoration, combined with previous experience in the banking industry, enables Jeff to be a substantial contributor to GreenTrust’s mission of building strategic partnerships with public and private entities to identify, acquire, restore and conserve environmentally degraded sites and corridors that result in enhanced ecological functions and habitat values at a large scale.


Land Protection Intern

Trevor is a rising senior at Salisbury University on Maryland’s Eastern Shore, and captain of the men’s soccer team. He is majoring in Environmental Studies with an emphasis on law and policy, and hopes to attend law school in Fall, 2020. At GTA, Trevor’s efforts are focused on record keeping related to GTA’s conservation easements, as well as organizational protocols associated with our land trust activities. Trevor is a native of Carroll County, Maryland.



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Rick has over forty years of water resources engineering, research and management experience in both the public and private sectors. His technical expertise includes water quality assessments, water quality modeling, watershed restoration and management, active and passive wastewater treatment system design and applications and hydrological analysis. Current interests are in market-based mechanisms for restoring impaired ecosystems. During his career he chaired numerous state and national policy, advocacy and research committees and was the recipient of a number of awards and recognitions. Additional non-profit involvement includes Sewickley Creek Watershed Association, Pheasants Forever, Ruffed Grouse Society, Westmoreland Conservation District and Hempfield Township Planning Commission. Rick earned a BA in biology from Otterbein College, an MS in ecology from Indiana University of Pennsylvania and a ME in civil engineering (environmental) from the University of Virginia.


Richard Herd

Dr. Frederick is a Professor in the Department of Forestry and Environmental Resources at North Carolina State University. He has a B.S. and M.S. from West Virginia University, and a Ph.D. from University of Idaho. His research interests include hardwood silviculture and ecology; restoration ecology; mitigation; wetlands; biomass, nutrient, and energy distribution in hardwood forests of the South; species selection and silvicultural systems for plantation hardwoods in the Southeast.

Board Member

Dr. Douglas Frederick

Dr. Albert Robert Rubin is an Emeritus Professor in the Biological and Agricultural Engineering Department at North Carolina State University and is currently a Senior Environmental Consultant and principal with his firm, A. R. Rubin and Associates. From 1999 through 2005 he was a visiting scientist with the USEPA in Washington, D.C., where he assisted with development of the onsite and decentralized wastewater management program.  For that effort, the USEPA awarded a Bronze Medal to Dr. Rubin and the decentralized project. From 2005 through 2009 he was employed as a senior technical consultant with a private firm and in 2009 he formed a consulting firm. In 2013 he was appointed to the USEPA Infrastructure Committee for Nutrient Recovery from Wastewater and Environmental Management Commission for the State of North Carolina. In 2018 he assisted in development of Natural Systems for Wastewater Treatment, in WEF Design Manual for Wastewater Systems; WEF, Alexandria, VA, 2018. Throughout his career he has been involved in the development of guidelines, rules, and technologies that benefit the water, wastewater, and solid waste management industry in recovery of products for beneficial use. In 2012 he assisted in development of NSF Standard 350 for non-potable water reuse and that Standard is in building codes to promote wise water management. He has remained active in teaching and research to address a variety of water, wastewater, stormwater and wastewater residuals/solid waste management.

Board Member

Dr. Albert Rubin

Mr. Williamson, a Washington DC environmental attorney, joined the GTA Board in March, 2019. Max has been recognized by Chambers and Super Lawyers as an outstanding lawyer in environmental law and climate change policy. He is a past co-chair of the D.C. Bar Environment, Energy and Natural Resources Section. Max holds B.A. from Yale University and received his J.D. magna cum laude and Masters degree summa cum laude from Vermont Law School specializing in environmental law and policy.

Board Member

Max Williamson, Esq.