Principals

Elsa Loehmann, PE, is an accomplished engineer with over 20 years of expertise in aquatic habitat restoration, nature-based solutions, and urban flood resiliency. As a Principal at eDesign Dynamics (EDD), she directs a diverse portfolio of projects, including resiliency master planning and design, habitat restoration design, and urban flood mitigation. Her expertise extends to stakeholder engagement and guiding interdisciplinary teams to sustainable solutions.
Ms. Loehmann brings a client-focused approach, emphasizing collaboration with community stakeholders, local and national regulators, and project teams to ensure efficiency and effectiveness. She has led efforts in securing funding, feasibility analysis, and long-term project implementation for urban and suburban flood mitigation initiatives. A licensed Professional Engineer in Connecticut, she is also a contributing author of multiple American Society of Civil Engineers (ASCE) publications.
Prior to joining EDD, she served as the Water Resources Group Lead at Fuss & O’Neill Inc., where she spearheaded high-profile projects like the Meriden Green revitalization project, Resilient Danbury flood mitigation and infrastructure protection planning, and various ecological restoration initiatives. Her career highlights include award-winning flood mitigation projects and innovative strategies for integrating natural and engineered solutions to enhance climate resilience.

Amanda holds a Master’s in Landscape Architecture from The City College of New York, a B.A. in Geography from Hunter College of New York, and a certificate in Sustainability Analytics from Columbia University’s Earth Institute. Amanda has over fifteen years of experience designing natural areas and green infrastructure in New York City and its suburbs working for a diversity of public agencies and private firms. Prior to joining eDesign Dynamics, Amanda was a renewable energy siting specialist for New York State’s Office of Renewable Energy Siting, serving as the Office’s subject matter expert for native plantings, visual impact, and agrivoltaics. Amanda previously founded PLAN it WILD, a sustainable landscaping company that installed thousands of native plants for landowners throughout Westchester and successfully launched Westchester’s first electric-powered yard care membership program. Amanda also served as a wetlands restoration specialist for the Natural Areas Conservancy, designing bioengineered solutions to support New York City’s coastal resiliency initiatives and worked as a project manager for the Green Infrastructure Unit at NYC Parks and Recreation, where she oversaw the design, construction, maintenance, and monitoring of green infrastructure citywide. Amanda was awarded a 2021 Woman in Business award by 914 Inc. and was honored as a 40 Under 40 Rising Star by the Business Council of Westchester. Amanda is a licensed landscape architect in Connecticut and New York.

Kyle joined eDesign Dynamics in 2016 as a Project Engineer working on green infrastructure and stormwater management projects. Prior to joining eDesign Dynamics, Kyle conducted graduate research on nutrient recovery in source-separated wastewater through ion-exchange treatment. Kyle has previously worked as a consultant engineer on large scale buried infrastructure rehabilitation projects performing both engineering design and construction management. Kyle holds a B.S. and M.E. in Environmental Engineering from the University of Florida.

Theo Barbagianis joined eDesign Dynamics in 2012. Theo performs calculations, modeling, and analyses relating to hydraulics and hydrology and manages the design and construction of green infrastructure projects throughout New York City. His projects include assisting in the design and managing the construction of a treatment wetland in Flushing Meadows-Corona Park in Queens, designing a bioretention system in Bronx River Park in The Bronx and designing over 20 right-of-way bioswales in the Gowanus neighborhood of Brooklyn. Prior to joining eDesign Dynamics, Theo Barbagianis performed research as a graduate student on the use of green infrastructure in urban stormwater management as well as on the spatiotemporal impact of wastewater point sources on nitrogen pollution. Theo has also worked for the NYC Department of Environmental Protection’s Bureau of Wastewater Treatment, where he managed the design and construction of pumping station upgrades throughout the five boroughs. Theo holds a B.S. in Chemical (Environmental) Engineering from the University of Southern California and an M.E. in Civil Engineering, with a focus in environmental engineering and water resources, from The City College of New York. He is also a licensed professional engineer in New York and New Jersey.

Dr. Montalto, PE is a licensed civil/environmental engineer and hydrologist with 20 years of experience working in urban and urbanizing ecosystems as a practitioner, designer, and researcher. This experience includes planning, design, implementation, and analysis of natural area restoration and green infrastructure projects, featuring natural treatment systems for wastewater and stormwater management, as well as water harvesting and reuse systems. In addition to serving as the  President and Principal Engineer of eDesign Dynamics LLC, Franco Montalto directs the Sustainable Water Resource Engineering Laboratory at Drexel University, where he was appointed as an Assistant Professor in the Department of Civil, Architectural, and Environmental Engineering in 2007. He is a member of the Advisory Boards of the New York City Natural Areas Conservancy and serves as Co-Chair of the American Society of Civil Engineer’s Technical Committee on Low Impact Development Computational Methods. Prior to founding eDesign Dynamics, Franco Montalto served as the wetlands engineer at the New Jersey Meadowlands Commission, where he was responsible for the engineering design of the 209-acre Mill Creek Marsh in Secaucus, NJ among other large urban wetland restoration projects.  He has worked overseas in Europe, Africa, the Caribbean, and Latin America and is the author of several publications in the water resources field.  He was also formerly a Fellow at the Earth Institute at Columbia University, a Fulbright Scholar, and an Adjunct Professor at the Cooper Union for the Advancement of Science and Art, where he received his first degree. Curriculum vitae ▼

Eric Rothstein is a hydrologist with twenty years of experience working on a variety of sustainability projects.

Mr. Rothstein’s career has focused on ecosystem restoration and water resources planning within urban centers. He currently leads the team investigating the sustainable water resource planning for multiple projects in New York City. His international work includes water resource and ecosystem planning in Nepal, Sao Paulo, Brazil, rural Rwanda, and the Aegean coast of Turkey.

Mr. Rothstein previously worked as a project manager for New York City for over seven years. In that capacity, he managed ecological restorations including salt marshes, fresh water wetlands, grasslands, and forests and developed naturalized stormwater management structures. Examples of Eric Rothstein’s built work can be found in all five boroughs of New York City and beyond. He has also worked for a national ecological restoration firm where he worked on master planning of ecological, stormwater management and soil components for large scale developments.

Mr. Rothstein has lectured on wetland restoration and stormwater management issues at the graduate level at Harvard, Columbia, and The University of Pennsylvania. He teaches continuing education courses to professionals through the State University of New York College of Environmental Science and Forestry. Eric Rothstein holds an M.S. in Soil and Water Engineering /Hydrology from Cornell University and a B.S. from the University of Wisconsin, Madison.