Our Team

Tacy Lambiase

Director, Office of Sustainability

Tacy is the Director of GW's Office of Sustainability and joined the team in May 2026. Tacy has built a career around helping individuals and communities understand, prepare for, and resiliently face a world impacted by climate change. Previously, she served as the Head of Client Partnerships at Kim Lundgren Associates, Inc. (KLA), where she managed climate action planning and implementation projects for local governments across the country. In addition, Tacy managed campus sustainability initiatives at both her alma maters, American University and the University of Maryland. She is an alumna of American University’s Kogod School of Business, with a Master of Science in Sustainability Management, and holds a bachelor’s degree in History from the University of Maryland. She can be reached at tacy [dot] lambiasegwu [dot] edu (tacy[dot]lambiase[at]gwu[dot]edu). 

Danielle Corsan

Sustainability Associate, Office of Sustainability

Danielle Corsan is a Sustainability Associate at the Office of Sustainability. Danielle supports the progress of several sustainability initiatives at the university. Prior to her role at GW, Danielle was a project developer at a utility-scale solar energy company, with specific interests in sustainable land use and agrivoltaics, which is the integration of agriculture and solar. Danielle earned her B.A. in Policy Studies with a concentration in Environmental Policy at Syracuse University in 2021, and then went on to receive her MPA, also from Syracuse University, in 2022. She can be contacted at d [dot] corsangwu [dot] edu (d[dot]corsan[at]gwu[dot]edu).

Rebecca Moser

Sustainability Manager, Donohoe

Rebecca Moser is a Sustainability Manager with 9 years of facilities management experience in the Washington, DC area. She oversees the research and implementation of sustainability projects, programs, and initiatives in the following core areas: technology, energy, water, and gas conservation, waste management (including composting and recycling), green cleaning, and landscaping. She proposes and supports innovation activities, utilizing best practices to support leading-edge technology for building management. Rebecca holds a Master's degree in Environmental Politics and Policy from Virginia Tech and won the Research and Academic Achievement award for Best Master's Thesis in her graduating class. She can be reached at r [dot] mosergwu [dot] edu (r[dot]moser[at]gwu[dot]edu).

Sasha Nathan

Zero Waste Coordinator, Office of Sustainability 

Sasha Nathan is the new Zero Waste Program Coordinator at the Office of Sustainability. She received a B.S. in Environmental and Sustainability Science with a concentration in Ecological Management from GWU in December of 2025. As a recent graduate, she is eager to get involved in the environmental space as a professional with particular interests in ecological restoration and conservation. She enjoys making art, rock climbing, and spending as much time as possible outside! She can be reached at snathan04email [dot] gwu [dot] edu (snathan04[at]email[dot]gwu[dot]edu.)

Sofia Tjia

Sustainability Program Coordinator, Office of Sustainability

Sofia is the new Sustainability Program Coordinator at the Office of Sustainability. She recently graduated from GW with a Bachelor of Arts in International Affairs with a concentration in Environmental Studies and a Minor in Sustainability. She is passionate about environmental justice and is excited to contribute to work that helps to shape global environmental practices! In her free time, she loves doing puzzles, reading, and crocheting. She can be reached at stjiaemail [dot] gwu [dot] edu (stjia[at]email[dot]gwu[dot]edu).

Ben Jacobs

Intern | Marketing and Communications

Ben is currently enrolled in GW's BA/MA Program in Environmental Studies and Political Science and Environmental and Sustainability Policy. His interests include conservation policy, nature, music, hiking, and the ocean! 

Deeksha Ravi

Intern | Zero Waste

Deeksha supports zero waste work, especially in food recovery. She also works with the Sustainability Living Learning Community on the Vern. She is a health data science major.

Elizabeth Ellingson

Intern | Textile Reuse

Elle is an intern with the Textile Reuse team. She's a native Hoosier and an avid fashion lover! She is majoring in political science with a public policy focus and an economics double major.

Elizabeth Hajosy

Intern | GroW Community Garden

Elizabeth Hajosy, native of South Carolina, is studying International Affairs and Spanish at GWU and her interests include law and sustainability. 

Elias Theofilopoulos

Intern | GroW Community Garden

Elias Theofilopoulos is an Intern at the GW Grow Garden. He is majoring in Environmental Studies with a double minor in Sustainability and Public Policy. He inherited his love for gardening from both his grandfathers.

Emily Meltzer

Sustainability Administrative Assistant

Emily Meltzer is a graduate student assistant at the Office of Sustainability. Emily is majoring in Environmental Studies with a minor in both Sustainability and Political Science.

Eva Howe

Intern | Mount Vernon Community Garden

Eva (they/she) is a gardener at the Mount Vernon Campus. She is majoring in political science and minoring in food leadership. In their free time, Eva loves to cook, eat, and care for their house plants.

Isel Neira

Intern | Compost Educator

Isel Neira interns with the Composter Educator program. She is majoring in Political Science and minoring in Journalism and Mass Communication.

Jisae Son

Intern | Compost Educator

Jisae interns with the Compost Educator program. She is majoring in International Affairs and Environmental Studies.

Juliette Travassos

Intern | Zero Waste

Juliette is a Zero Waste Intern. She is double majoring in Political Science (Public Policy Focus) and Environmental Studies, with a minor in Women's, Gender, and Sexuality Studies.

Kalina Freel

Intern | GroW Community Garden

Kalina Freel is a Garden Manager at the GroW Community Garden on the Foggy Bottom Campus. She is majoring in Environmental Studies with Minors in Political Science and Geography.

Ruby Burns

Intern | Zero Waste

Ruby Burns is studying human services and social justice, as well as food leadership through the Global Food Institute. Ruby is on our Zero Waste Team!

Sophia McCoy

Intern | Textile Reuse

Sophia McCoy is a Textile Reuse Intern for the Office of Sustainability. She is majoring in International Affairs, and minoring in Chinese Language and Literature. 

Join Our Team!

The Office of Sustainability proudly employs an average of twenty GW students, both undergraduate and graduate, each academic year, offering hands-on opportunities to lead, learn, and create real impact across campus. Our student team plays a key role in advancing sustainability through a wide range of programs, from running The Loop, GW's free thrift store, to planning Zero Waste events and supporting strategic sustainability initiatives across campus. If you're passionate about sustainability and eager to make a difference, visit our Student Employment Opportunities page to learn more about how you can join the team.

Our Student Organization Partners

Several GW student organizations have missions related to sustainability.  The GW Center for Student Engagement has resources to help students join, form, and manage student organizations. Search for these organizations on GW Engage.

GW Engage 

The Responsible Fashion Collective is a collective of students and faculty at GW aiming to teach students about sustainable fashion practices. They organize upcycling workshops, knitting circles, thrift pop-up shops, and other programming. Follow their Instagram account @rfcollective.gwu to learn more.

The Environmental and Energy Law Association brings together law students to provide educational, career and networking opportunities.

Food Recovery Network aims to tackle both food waste and hunger by collecting food that would otherwise be thrown away from restaurants and catered events.

Orca works to educate the community about the injustices posed by environmental degradation, racism and the global climate crisis, build student power, increase transparency and democracy within our University institutions, and pursue a moral strategy of sustainable investment.

Green GW works to make the university more eco-friendly and spread awareness of environmental issues to the student body.

The Humanitarian Mapping Society brings together those who seek to render aid and improve the world through humanitarian Geographic Information Systems (GIS) projects.

Net Impact GW Chapter mobilizes next-generation leaders to use their skills and careers to make a positive impact on the world.

GroW Community offers students and community members a space to engage with sustainable agricultural practices, consider issues of food access and food sovereignty in Washington D.C., and cultivate community around food. The GroW Community also facilitates a CSA program you can sign up for using GWorld.

Take Back the Tap is an initiative to transition from using single use plastic water bottles to reusable, refillable bottles. 

Environmental Justice Action Network is dedicated to advancing and bringing awareness to the field of Environmental Justice.

GW TRAiLS stands for "Teaching Recreation and Adventure incorporating Leadership and Service." They are a group of students serving the GW community by planning and leading outdoor adventure trips throughout the year. As a departmental organization in the CSE, GW TRAiLS is a private, non-profit learning institution that is run by GW students.

Veg Out is a community of students interested in veganism and the issues that intersect with animal agriculture. We strive to make plant-based eating more accessible to the GW community and delve into issues such as animal ethics and sustainability.

OneWorld GW is a non-partisan environmental organization dedicated to combating climate change, building a sustainable future, and reconnecting students with the natural world. Through service and storytelling, OneWorld inspires students to Think Globally and Act Locally about our collective responsibility to care for the planet. 

The Student Association at George Washington University represents over 27000 undergraduate and graduate students in Washington DC. The mission of The George Washington University Student Association is to further the interests and promote the welfare of all students at GW. Our responsibilities are defined in four ways: to advocate, allocate, advertise, and assist.

The GW Association of Energy Engineers (GW AEE) seeks to train future sustainable energy leaders equipped to deal with 21st century challenges. Visit AEE's website to learn more.

Does your organization belong on this list? Let us know! Email us at sustaingwgwu [dot] edu.