Kawall, treasurer

Sandy brings over 30 years of financial accounting and management experience to the board. Currently, she is responsible for all internal and external financial reporting for The Effort Trust Company in Hamilton. 

Her family has called Burlington home for the past 20 years. She is an active member of her lake association and works hard to maintain their cottage property using environmentally friendly practices.

Sandy believes providing sound environmental education in schools is the best way to to find solutions to the many environmental challenges we face.

​Ken Kawall is the retired Chief Information Officer at the Workplace Safety and Insurance Board. Over his 40-year career, Ken has held senior executive positions in both the public and private sectors.

He has an MBA from the Ivey Business School at Western University and is a Chartered Professional Accountant who has significant board experience. A former member of the Niagara Health System board, Ken currently is a board member of the Resource Productivity and Recovery Authority as well as the Niagara Peninsula Conservation Authority. He volunteer his time with our organization as treasurer.

Pedro Pereyra Becker is a high school chemistry teacher with a PhD in Neurochemistry and a long standing interest in the environment.

He has conducted ecology field research for his own interest and at the behest of several agencies including Conservation Halton and the Ministry of Natural Resources and Forestry. Pedro aids in new presentation development.

Pereyra, board member



board member

Our Board

Our Volunteers

Heather is a passionate believer in the importance of educating young people and others in the community about nature and our environment, for their own health as well as the health of our earth.  She has been part of the Ontariogreen educational programs since their initiation. As well as assisting with the environmental education programs, she has participated in Ontariogreen’s plantings of native species in schools and parks.

Heather holds a B.Sc. in Chemistry from UBC and a PhD in Chemical Engineering from the University of Waterloo, as well as a diploma in Holistic Nutrition. She has worked in industrial and academic environments. She enjoys communicating her love of both science and nature through Ontariogreen's presentations. She loves walking, kayaking, and being in nature.




secretary & educator

Our Educator

Bernadette Ward is the executive director for the Oakville Arts Council.

Prior to this role, she held progressively responsible positions in the field of journalism and communications including the roles of Communications Director and Operational Director at the Oakville Arts Council. Bernadette has a wide array of expertise and experience in organizational planning, issues management, project management, human resources management, brand and identity development and financial management.




Call us anytime to learn about our programs at 905-562-3819 or email us at

Liz is a former journalist and newspaper editor who has worked in Europe and Canada. Since 2004, she has led environmental groups and been engaged in environmental policy at the local and Provincial level.

With a degree in Science from the University of Toronto and her background in journalism, Liz is able to combine excellent communication skills with the ability to thoroughly research issues to  make her an effective environmental educator. The environmental education presentations and programs she has developed, based on the Ontario Science, Social Studies and Geography curricula, have been delivered to over 77,000 students. 

Liz has received local, Provincial and National awards for her environmental work. In 2007, Liz was awarded both Oakville's Individual Community Spirit Award and the Rotary’s Paul Harris Fellowship Award for outstanding contributions to her community. In 2009, she was chosen as Earth Day Canada's National Hometown Hero and in February of 2010 she received an award from the Ontario Heritage Trust in recognition for her success in conserving the Province’s natural heritage. In 2020 she received a Good Citizen Award from the Town of Lincoln for her environmental work.