Leslie Mesnick, Principal & Founder

Leslie has more than 25 years of environmental consulting experience serving as Project Director, Project Manager, and Deputy Project Manager for a variety of complex and high-profile transportation, infrastructure, and Brownfields redevelopment projects. Her capabilities include: project management, environmental review, permitting, interagency coordination, public outreach, and consensus-based mitigation. She has led many successful agency and community engagement programs for large and controversial transportation projects. Her recent projects required the preparation of EISs, permit applications, public involvement programs, and technical studies for various clients in New York, New Jersey, Pennsylvania, Maryland, and Connecticut. Leslie has expertise in natural resources permitting and environmental reviews performed in accordance with NEPA, SEQRA, CEQR, and NJ EO215. Leslie earned her M.S.E. in Environmental Engineering from the University of Pennsylvania and her B.S. in Environmental Systems from Cornell University.
Grace Donovan, Environmental Planner
Grace is an environmental planner with experience working on data analysis and assessment, stakeholder engagement, and community outreach. In previous roles, Grace engaged residents with the NYC Compost Project through outreach and education about community composting. Grace has experience in GIS and presenting to a variety of academic, public, and professional audiences. Grace received her B.A. double majoring in Environmental Studies/Geography and double minoring in GIS/Sustainability from George Washington University.
Caleigh Ingram, Environmental Planner
Caleigh is an environmental planner with experience working in stakeholder engagement, community outreach, and data analysis. Caleigh contributes to robust public outreach efforts for transportation projects. Her current responsibilities include developing engaging public outreach materials, such as graphics, presentations, and videos; contributing to environmental analyses; and working in partnership with clients and project teams. Caleigh received her B.A. double majoring in Environmental Analysis & Policy and Economics from Boston University.
Eric Wisnom, Environmental Planner
Eric is an environmental planner with The Calladium Group. His responsibilities include performing land use surveys, analyzing demographic data, performing environmental screening, and preparing materials for public outreach meetings. Prior to joining the firm, Eric was a Riparian Buffer Steward with the Tioga County Soil and Water Conservation District. He graduated from Binghamton University with a Bachelor’s in Environmental Science with a focus in Ecosystem Sciences.
TaeHo Lee, Environmental Planner
TaeHo is a planner and community engagement specialist. His work includes preparing public-facing materials and planning outreach events for large-scale infrastructure projects. Prior to joining the firm, TaeHo served as an Outreach Associate at Big Reuse, where he successfully executed more than 150 community events to educate the public about NYC Department of Sanitation’s Curbside Composting Program. He earned a Bachelors of Science in Environmental Policy from Rutgers University.
Sarah Chamedes, Junior Environmental Planner
Sarah is a junior environmental planner with The Calladium group, bringing a strong background in data analysis, natural resource economics, and public outreach. She earned her B.S. in Economics and B.A. Environmental Studies from Binghamton University. She brings expertise in econometric data analysis and natural resource modeling, complemented by a strong background in public sector policy reporting and community outreach.


