Get to Know the Team Behind the Mission
Our team is comprised of passionate individuals with a shared commitment to driving environmental stewardship and advancing sustainable practices in green infrastructure and stormwater management. With diverse expertise and a collective vision for a greener future, we work tirelessly to innovate, collaborate, and make a positive impact on our communities and the environment.
Board of Directors
Beatrice Ohene-Okae
(President)
Environmental Protection Specialist at DOEE
Washington D.C.
Claire Maulhardt
(Vice President)
TBA
Stephanie Chiorean (Secretary)
Environmental Staff Scientist & Planner
Philadelphia, PA
Andy Szatko (Treasurer)
GI Maintenance Project Manager
Omaha, NE
Torrey Lindbo
Water Resources Science & Policy Manager
Gresham, OR
Irene Ogata
Urban Landscape Manager
Tucson, AZ
Heidi Horlacher
Senior Water Resources Specialist
Vancouver, BC
Ryan Durocher
Watershed Operations & Maintenance Division Manager
Portland, OR
Lisa Sasso
Project Manager for MMSD
Milwaukee, WI
Sally Hoyt, PE
Stormwater Review Supervisor and GSI Advocate
Raleigh, NC
GI Leadership Exchange
Our Staff
Barbara L. Hopkins, Esq, ASLA
Executive Director (Parkville, MD)
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Trained as both a lawyer & landscape architect, Barbara spent 13 years as ED of an urban land trust before joining the Exchange in 2022. Prior to that, she practiced law, consulted, & worked for 11 years at Baltimore City Community College, serving as vp for institutional advancement, among other roles.
Nina Baldwin
Program Manager (Atlanta, GA)
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Originally from NC, Nina received a B.S. in Biology from East Carolina University. Since 2016, she’s worked as an environmental educator for several institutions, most recently in Atlanta, GA. Throughout her career, she’s developed programs for students, educators, and community partners.
Tracy Tegart
Education Manager (Hickory, NC)
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Tracy grew up in southern Ontario and earned a B.Sc.in Physics from the University of Guelph. Her career in education began with a non-profit in Vancouver, BC, where she promoted science literacy through community-based programming. Tracy went on to earn a Master of Human Relations while living in Germany, and has since worked in several mission-driven environments across the US. She specializes in designing, building, and facilitating learning programs that help professionals do complex, meaningful work.
Megan Warner
Education Coordinator (Scottsdale, AZ)
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Megan (she/her) has worked in outdoor and environmental education across several states, including Arizona, Pennsylvania, Hawaiʻi, Colorado, and Oregon. She holds a B.S. in Sustainability from Arizona State University. Throughout her career, she has created programs on climate justice, waste prevention, and mindful activism. Megan enjoys rock climbing, trailrunning, and nature journaling.