Meet Our Staff

The Office of Sustainability’s offices are located in the Northeast Module 2 on Fairfax Campus, across from the Rappahannock Parking Deck and Hamptons Road residence hall.  Contact us at to get connected with us!

Greg Farley
Director of University Sustainability George Mason UniversityOffice of Sustainability

Greg Farley is Director of University Sustainability for George Mason University in Fairfax, VA.  He has held similar positions at Washington College (Chestertown, MD) and at Chesapeake College (Wye Mills, MD), where he was also an award-winning instructor and director of the Chesapeake College Center for Leadership in Environmental Education.  His career in sustainability began as a visiting scholar at the Sustainable Living Institute of Maui (SLIM), part of the University of Hawai‘i Maui College, where he also co-edited a book, “Thinking Like an Island,” with SLIM Director Jennifer Chirico.  A biologist by training, he holds degrees from Duke University and Florida State University.

Ben Auger
Sustainability Program Manager Education and Outreach George Mason UniversityOffice of Sustainability

Ben (he/him/his &/or they/them/theirs) joined the Office of Sustainability (OoS) in September 2019 as the Sustainability Program Manager for Education & Outreach. Ben supports the office’s work to leverage Mason’s strengths to advance sustainability institution-wide by comprehensively managing communications for the office. He integrates sustainability into Mason’s culture and engages and educates the campus community through education, outreach, and engagement programs and initiatives. In addition, Ben serves as the Environment and Sustainability Living Learning Community (LLC) Coordinator and teaches as an Adjunct Faculty member with the School of Integrative Studies (SIS).

Before Mason, Ben worked in student affairs where he directly supported students at the University of Massachusetts Amherst and Mansfield University. Ben’s formal education credentials are a Bachelor of Arts degree in Sociology/Anthropology and History, and a Master of Arts degree in Organizational Leadership.

Story idea? Feedback? Want to chat? Say hello via email.

Sarah D’Alexander
Sustainability Program Manager – Patriot Green Fund

Sarah joined the Office of Sustainability in 2019 where she manages the Patriot Green Fund, a grant designed to support the Mason community with projects that help build a culture of sustainability on its campuses.

Prior to Mason, Sarah worked as the Lead Coordinator at the University of Maryland’s Office of Community Engagement where she created mutually beneficial and collaborative partnerships with community stakeholders as well as organized an annual, large-scale day of service. Sarah has a Graduate Certificate in Leadership and Management from University of Maryland Global Campus and received her B.A. in Biology and Environmental Studies from Ohio Wesleyan University. While an undergraduate student, she created the university’s first major waste diversion program that collected over 20 tons of reusable items. After graduation, Sarah served as a Team Leader in AmeriCorps NCCC where she traveled the country to work with different nonprofit organizations in their missions of energy conservation, environmental stewardship, agriculture, and disaster relief. Sarah is also trained in organic farming practices from her time working as an apprentice at Crown Point Ecology Center in Akron, Ohio.

Hala Elbarmil
Innovation Food Forest Coordinator

Hala graduated from George Mason University (GMU) in 2015, majoring in Communication, concentration in Media Studies, and minor in Film. Additionally, Hala earned a Permaculture Design Certification from GMU in 2015, and an Advanced Permaculture Design Certification in 2016 from Kinstone Academy in Wisconsin. Hala joined the GMU Office of Sustainability team as the Greenhouse and Gardens Coordinator. During her spare time, Hala enjoys raising chickens and sheep, gardening, hiking, biking, and practicing parkour.

Bryce Gatling
Alternative Transportation Team Lead

Bryce completed his degree in Environmental and Sustainability Studies with a concentration in Business, and Minor in Geographic Information Systems. His role in the Office of Sustainability and the Transportation Office  is to help lower Mason’s carbon footprint through a focus and expansion of alternative transportation modes over single occupancy vehicles, and use his skills with ArcGIS to highlight sustainable transportation resources on campus. When not working in the office, Bryce is a part of the collegiate Men’s Volleyball at George Mason. Previously a Residential Advisor for two years, Bryce has worked to better a sense of community and has worked for sustainable behavior change throughout his undergraduate years.

Doni Nolan
Sustainability Program Manager, Greenhouse & Gardens

Donielle Nolan (Doni for short) has been at Mason for almost 10 years. She started out as a student in 2010, studying biology and volunteering as the president of the GMU Organic Gardening Association (GOGA). She joined the Office of Sustainability in 2013 as the summer intern for the Potomac Heights Organic Vegetable Garden (PHVG) and later as the assistant coordinator for the Permaculture Design Certification Course (PDCC).

After working all summer in the garden, she knew that growing food was her passion. In 2014, she was hired part time to start the hydroponic greenhouse program at the President’s Park Greenhouse. The facility is still going strong today, hosting hundreds of volunteers every semester, and growing lettuce, microgreens, and culinary herbs year round, which are served in the dining halls on campus. She became full time staff in 2016, and began managing GOGA, the PHVG and the Innovation Food Forest (IFF), in addition to the hydroponic greenhouse.

Once she received her Masters of Science in plant science and pest management in 2018, Doni began teaching sustainability courses as adjunct faculty for the School of Integrative Studies. Her passion and joy is contagious as she engages and educates the community about sustainable food production, composting, herbal medicine and so much more. If you would like to get involved with the Greenhouse & Gardens Program, or have a landscaping related project idea, please contact Doni at, or find her in the campus gardens during the weekly volunteer shifts.

Colleen Regan
Campus Efficiencies Assistant

Colleen graduated from Mason in Fall 2019 with a major in Environmental Studies with a concentration in Environmental Policy and a minor in GIS. She continues to serve as support staff as the Campus Efficiencies Assistant to Amber Saxton. Although she is no longer a student, she continues to support Mason’s Campus Kitchen (which is now a part of the Food Recovery Network) to fight food insecurity and food waste in our campus community.

Photo of Lynn Ruffa
Lynn Ruffa
Presidents Park Hydroponic Greenhouse Coordinator

Lynn graduated with her bachelor’s degree in Environmental & Sustainability Studies with a concentration in Sustainable Food & Agriculture from George Mason University in summer 2020. She first learned about the Greenhouse & Gardens program as a student in fall 2018 when she needed to earn volunteer hours for a class. While completing volunteer hours, Lynn quickly fell in love with the Greenhouse & Gardens program and went on to complete an internship in the summer of 2019. In early 2020, the Presidents Park Hydroponic Greenhouse Coordinator position opened up and Lynn applied for the position, which yielded an offer to join the Office of Sustainability’s Greenhouse & Gardens team! Lynn is directly supervised by Doni Nolan, the Program Manager for the Greenhouse & Gardens program, and hosts volunteers and interns while ensuring the Presidents Park Hydroponic Greenhouse operates efficiently and provides an opportunity for one-of-a-kind experiential learning to all who visit. Lynn loves working collaboratively with Alexa Hines, the Potomac Heights Vegetable Garden Coordinator, and Hala Elbarmil, the Innovation Food Forest Coordinator, to create incredible opportunities for the Mason Nation and the surrounding community to learn about sustainable agriculture. In her free time, she enjoys gardening, cooking, traveling, and hiking with her rescue beagle, Chloe.

Amber Saxton
Sustainability Program Manager – Campus Efficiencies

Amber has 8+ years in sustainability policy, planning, education, and assessment. She recently supported the launch of the Mason Sustainability Council (MSC), 2020 AASHE STARS reporting, and recently conducted Mason’s first internal GHG inventory. She manages various energy efficiency (EE), alternative transportation, green purchasing, and zero waste programs, including a collaboration with Mason Athletics, Sodexo, EagleBank Arena, and over 60 volunteers that earned 1st place nationally for waste diversion in 2020. She led sessions at AASHE’s 2020 Global Conference on plastics pollution, and recently authored NWF’s CR2ZW “Plastics Reduction for College Campuses Recognition” program launching summer 2021, which has secured recurring AASHE STARS credit. To engage the Mason community, she and Facilities ITS developed an ArcGIS ‘Sustainable Mason Map,’ and are working on a sustainability dashboard. She has also taught Sustainability Project Management as an adjunct instructor for Mason (SIS) and was the Coordinator and a Faculty Liaison for the Environment & Sustainability LLC. She was selected by the National Renewable Energy Lab (NREL) as one of 18 Energy Execs for NREL’s 2021 Executive Energy Leadership Academy.

Amber got her start at the Alliance to Save Energy in D.C. as an International Research Associate, where she worked on projects for the World Bank on EE in new/ existing buildings in the EU; APERC studies on alt. transportation; US DOE’s US-China Eco-City Exchanges; EM&V policy development for Vietnam; and LEAD gender strategy for climate change adaptation/ mitigation for the USAID, an ICF sub-contract. She holds an M.A. in Foreign Policy Analysis & Conflict Negotiation from Seton Hall University and a B.A. from Ohio University. She did her graduate internship at The Clinton Foundation in Domestic Policy, and consulted-for-credit in IIE’s Heiskell award-winning Global Leadership Center for the U.S. Senate, foreign embassies, and Procter & Gamble.


Student Staff

Alexa Hines
Potomac Heights Vegetable Garden Coordinator

Alexa Hines is a junior majoring in Environmental Sustainability with a concentration in Sustainable Food and Agriculture. She loves to connect people to their food and teach students how to grow their own food using sustainable agricultural practices. That is why she is excited to intern with the Office of Sustainability as George Mason’s Organic Gardening Association’s Events and Outreach Coordinator this semester. Motivating students to get involved in sustainability initiatives has become one of her passions. She has found that knowing how to market to students is what initially sparks their interest and draws them into wanting to create a change, and she enjoys being a part of that process.

Thaw Zin Htwe
Green Campus & Residence Team Lead

Thaw Zin is a graduate student at Mason majoring in Data Analytics Engineering with proficient knowledge in statistics, mathematics, and analytics. She loves to work with sustainability data and tell data-based stories by assisting Mason’s Office of Sustainability with research, conducting cost-benefit analyses and collecting, analyzing, and visualizing data. By using data, she interprets and analyzes information to uncover new insights that drive continuous improvement in the operation of the Office of Sustainability and the Mason campus.