Our Staff

Stephanie Bush

Deputy Director of Halton Environmental Network

Stephanie rediscovered her passion for the environment and gained a new understanding of climate change during a period of study and self-reflection. With two young children and climate change concerns increasing, Stephanie left her career as a Social Worker to dedicate herself to taking action on climate with the goal of inspiring and guiding others to do the same. In 2019, she joined the Halton Environmental Network as the Program Manager for Greening Sacred Spaces – Halton-Peel.  As the current Deputy Director of HEN, Stephanie hopes to bring a social justice and equity lens to the issues of climate change and looks forward to engaging more people in the conversation.

Katrine Handley-Derry

Generation Green and Marketing Manager

Katrine Handley-Derry graduated from the University of Toronto with a Master’s of Environmental Science, following undergraduate studies in Ecology & Evolutionary Biology and Film.  Many of her experiences have involved engaging with the public in a number of ways: from being a Camp Director at Harbourfront, planning workshops to teach digital arts, to being part of the television show Daily Planet, bringing daily science programming to TV to spark the interest of children and adults alike. Katrine has worked for the Toronto International Film Festival on their Canada 150 project and then again in their Industry Services Department. For the past 3 years,  Katrine has worked at HEN as communications coordinator, producing promotional videos, managing social media, connecting with stakeholders and promotional material for all of HEN's programs.

Katrine is the Program Lead for Generation Green a program designed by youth for youth with the goal of reducing greenhouse gas emissions in the Halton community.

With her passion for engaging audiences, she travelled and lived abroad, developing my language skills in both French and Spanish. Outside of her academic and professional career, she is a landscape painter.

Alicja Jazwiec

Food and Community Garden Animator
Alicja Jazwiec graduated from McMaster University as a Master of Science in Hydrogeology, after completing her undergraduate studies in Earth and Environmental Science. Currently, Alicja is completing her Bachelor of Education at Brock University. She hopes to combine her passions for the environment and the local community with her love for teaching. Alicja loves teaching the next generation about our local environment, sustainability best practices, and the steps we can take as a community to protect our shared environment. Her love for the environment translates into her personal life, where she enjoys spending time outdoors, hiking, reading, travelling, and of course, gardening.

Trinity Kendell

HEN Co-op Student: Communications Assistant
Hi my name is Trinity Kendell, and I am in grade eleven at St.Mildred’s Lightbourn School. I am doing my professional internship at Halton Environmental Network! Since I was a young girl I have always loved helping the Earth and our local community through tree plantings, and other volunteer work. More recently I have helped run discussions on school sustainability with students from all around the world. Here at HEN I will be focusing on marketing on the various social media platforms to help educate others about environmental facts, and upcoming events! Learning this skill is very important because I will be able to create informational posts that will reach as many people as possible. It is inspiring to be a part of such a great non profit organization and group of people to help educate communities and see how companies can make a positive difference.

Lisa Kohler

Executive Director

Lisa’s career in the environmental not-for-profit sector spans more than twenty years in the U.S. and Canada. Lisa has a degree in environmental policy and analysis and certification as an Accredited Partnership Broker. With a demonstrated history of working in the non-profit organization management industry. With internationally-recognized leadership for inspiring climate change initiatives, Lisa has an influential role in Halton. She is the orchestrator of the Halton Climate Collective, a dedicated team of leaders focused on advancing local action. In addition to engaging the community in climate mitigation and adaptation strategies, she champions successful HEN programs including Generation Green, Halton Food, Halton Green Screens, Oakville Ready, and Greening Sacred Spaces Halton-Peel Chapter. Lisa is skilled in collective facilitation, transitioning innovation and developing inter-relational strategies integrating climate action, environmental sustainability and the green economy.

Ms. Kohler serves on Community Energy Taskforce for the Town of Oakville, City of Burlington’s Climate Action Committee, The Low Carbon Transition Steering Committee and the Climate Change Resilience Steering Committee for the Town of Halton Hills, the Halton Equity and Diversity Roundtable, Halton District School Board’s Environmental Management Team, Green Communities Canada National Board of Directors, Chair of the Halton Region’s Natural Heritage Advisory Committee. For the last two years Ms Kohler has enjoyed being a member of the City of Toronto’s Urban Forestry Grant Review Panel. Lisa is the Climate Realty Regional Organizer for the GTHA West.

Atish Pereira

Development Manager

Atish Pereira graduated from the University of Toronto with a Master’s in Environmental Science following an undergrad degree in Honours Bachelor of Science in Environmental Science and Biology. His passions are hiking, gardening and learning about various flora and fauna species across this great country.  He is very passionate about current climate change challenges and excited about the vital role organizations such as Halton Environmental Network play in engaging local communities to combat these issues. He hopes to utilize his experience fundraising for the Peel Environmental Youth Alliance to secure diverse funding resources to support Halton Environmental Network's essential programs, ensuring long-term sustainability. 

Alyson Prokop

Community Garden Coordinator

Alyson has been with Halton Food since 2018, as Education Coordinator coordinating our community gardens in Burlington as well as developing and delivering programs for Burlington elementary and high school students and the community. Alyson's passion lies in local food production and strengthening our connection to growing food. With a BSc in Plant Biology, MSc Plant Pathology, as well as a Diploma in Outdoor Education Alyson has worked for certified organic farms and built a rich career as a botanical instructor and community garden coordinator the past 15 years. Alyson loves teaching others about the benefits of being able to grow their own food and make good food choices - especially through applied learning and you'll often find her in the garden with compost-encrusted hair, mud on her face and always with a cup of tea in hand.

Jaynie Purcell

Manager of Volunteer Services and Administration

Jaynie Purcell graduated from the University of Guelph Humber with a Degree in Media and Communications and a Diploma in Public Relations. As a proud member of the Beaver Lake Cree Nation, Jaynie has a passion for protecting and preserving the environment in honour of our ancestors and on behalf of future generations. At Halton Environmental Network, Jaynie is stepping into the role of Manager of Volunteer Services and Administration. With industry experience coordinating and engaging volunteers and a background in the Non-Profit sector, Jaynie welcomes this opportunity to combine her experiences and passion for the environment. She is excited to create rich and meaningful opportunities for volunteers in the Halton Community. In her spare time, Jaynie enjoys camping, hiking, running, snowboarding and volunteering within the Halton community.

Andrea Rowe

Director, Sustainable Environments


After leaving the corporate world to raise her two boys, Andrea rekindled an appreciation for nature from her childhood. In 2017, she joined the Halton Environmental Network in the Greening Sacred Spaces program, helping Faith Based Organizations reduce their environmental impact through greening initiatives. Additionally, as the Program Manager for Halton Food, HEN's newest program, she also supports community gardens and garden-based education throughout Halton Region. Recent projects have included implementing gardens at elementary and secondary schools, supporting food gardens and programming in Community Housing neighbourhoods, establishing Canoe Gardens and other pollinator gardens, and supporting social organizations' clients through garden based initiatives.  Andrea now also facilitates "Depave Paradise" projects throughout Halton, removing asphalt and pavement to create new pollinator gardens.


Helen Stephenson

Community Garden Coordinator

With nearly 200 square feet of vegetable gardens in her backyard, a certificate in Horticulture from the University of Guelph, and a degree in Biology from the University of Waterloo, Helen has extensive knowledge in sustainable urban agriculture. Helen joined Halton Food Council, now Halton Food, in 2017 but had been leading the Junior Gardening Program through the Oakville Horticultural Society for many years before that. Her program included lessons on vegetable growing, weeding, watering, harvesting as well as talks by experts on soil, bugs, milkweed and bees. She has also spent many years independently studying, identifying and growing species native to the Carolinian Region. She is committed to remaining up-to-date and involved with current trends in horticulture.When she isn’t gardening, Helen is actively involved with the sport of curling.

Georgia Wiggins

Educational & Virtual Programming Developer 

Georgia is in her second year pursuing a Bachelor of Environmental Studies, majoring in Environment, Resources and Sustainability at the University of Waterloo. Her studies focus on environmental sustainability including climate change, environmental policy, and ecology. With a strong personal passion for sustainable fashion, she enjoys upcycling clothing to give garments a second life and divert textile waste from landfills. In her spare time she also enjoys drawing, hiking, running, and learning new languages. Georgia believes in promoting sustainability at a community level and has co-organized a climate strike, planned a clothing swap, and was active in various environment focused student clubs. She is very passionate about current environmental challenges, and is interested in finding innovative solutions to these problems. Georgia is very excited to be able to work with Halton Environmental Network to further explore community level initiatives to contribute to a sustainable future. 

Canada Summer Jobs

Kayne Boyall

Volunteer and Engagement Program Animator

Kayne is entering his third year of environmental sciences at the University of Guelph. Majoring in environmental economics and policy, he is delving into how socio-environmental values and our use of resources impact our relationship with the natural world. He hopes to combine multidisciplinary tools, experience, and research to help enact holistic and adaptive solutions to the crises faced by environments and communities of all scales and scopes. Kayne became involved in community-based volunteerism after moving to Oakville from South Africa in 2016, and quickly grew a zeal for giving back to the Halton community and landscape that had warmly welcomed him. Having been a volunteer for HEN for 4 years, he gained a full appreciation for the symbiosis shared between grassroots eNGOs and their communities in enacting climate change mitigation and adaptation. Kayne helped to conceptualize and spearhead the Generation Green program in 2019, a perennial initiative that empowers Halton youth to create, measure and track their own carbon-mitigation projects. Kayne is also an undergraduate research assistant at the FARE Laboratory for Experimental and Applied Economics and a part of the University of Guelph's Gryphons Rowing team. In his spare time, he is an avid plant-based cook and outdoor-sports junkie.".

Riley Cerovcec

Eco-camp Coordinator

Riley is going into his 2nd year in environmental engineering at the University of Western Ontario. His position at the Halton Environmental Network is to coordinate an environmental education camp in hopes of teaching others about climate change and its effect on the world. Riley has experience in multiple camp environments which he is excited to apply to his role here. In his spare time, Riley enjoys astronomy, statics, and other science courses, as well as wakeboarding and playing hockey. Riley is thrilled to be given the opportunity to work with the Halton Environmental Network and is excited to educate about climate change.

Allison Headrick

Enviroguide Coordinator

Allison is entering her fourth year of the Concurrent Education program at Queen’s University in Kingston, pursuing a Bachelor of Arts (Honours) with a major in History and a Bachelor of Education. At the Halton Environmental Network (HEN), Allison is excited to be applying her passion for learning, writing, and engaging community members and youth with the mission of sustainability and practices centred on mindful consumption by developing HEN’s 2021 EnviroGuide. Allison brings past experience from a number of non-profit roles, including youth advocacy with the provincial government and a volunteer recognition role at Habitat for Humanity Halton-Mississauga. As an aspiring high school History, English, and Geography teacher, she is motivated to explore cross-curricular opportunities in which environmental stewardship can promote lifelong learning and well-being.

Gemma Patey

Community Garden Assistant
Gemma is going into her fourth year of her undergraduate degree in Global and International Studies at Carleton University. With a specialization in Global Politics, she studies how politics is intertwined with current crises in our modern world. At the foundation of global issues is the work done within communities, and Gemma is excited to work in and with the Halton Community she has called home her whole life. She has experience working in student affairs at Carleton and within politics in Halton Hills, delivering programming and supporting folks in her communities. Most recently, she has been developing a virtual climate advocacy camp for students in the Ottawa area to create change in their own communities. In her spare time, she loves abstract painting, watering her plants, and hiking with her dog. Gemma is excited to step into her role at the Halton Environmental Network to develop her knowledge of how sustainability, food sovereignty, and food security can come together through community gardening.