Vice-Chair
Denisa Mertiri she/her
Ontario Power Generation
Denisa Mertiri
Biography
Denisa Mertiri practices in the areas of environmental, aboriginal and energy law. Denisa delivers strategic, effective and practical legal advice as well as litigation guidance to confront environmental challenges and ever-shifting regulatory frameworks. Denisa has practiced environmental law and commercial as well as environmental litigation at some of Canada’s leading law firms and represented clients in many of Canada’s biggest commercial and regulatory cases and prosecutions. She has also acted as both defence and Crown counsel on a number of criminal and quasi-criminal cases with a track record of negotiating successful resolutions.Newsletter Editor
Alessia Petricone-Westwood
Newsletter Editor
Joanna Vince
Willms & Shier Environmental Lawyers LLP
Joanna Vince
Biography
Joanna Vince, B.Sc. (Hons.), J.D., is a partner and Certified Specialist in Environmental Law by the Law Society of Ontario at Willms & Shier Environmental Lawyers LLP. She has significant expertise representing a wide range of clients with environmental issues, civil claims and prosecutions, orders and appeals. Joanna provides advice about environmental aspects of the purchase, sale, remediation and development of contaminated land. She helps quantify and manage environmental risk, provides solutions for environmental due diligence and compliance, and assists with negotiations with environmental regulators to prevent orders and prosecutions. Joanna also helps clients navigate the environmental regulatory process, environmental assessments and approvals for manufacturing and other industry, energy, mining, natural resource and infrastructure projects, and helps clients obtain approvals for air, noise, waste and sewage.
Joanna represents plaintiffs and defendants in environmental civil litigation. She also defends individuals and companies against environmental regulatory prosecutions. Joanna appears before administrative tribunals including the Environmental Review Tribunal, Ontario Municipal Board, National Energy Board and Ontario Energy Board to appeal or uphold regulatory orders and approvals. She advocates for client interests in energy and transmission projects and pipelines.
Joanna advises First Nation and Inuit communities, resource proponents, and environmental boards and tribunals connected with natural resource development in Canada’s near and far north.
In addition to her law degree from the University of Toronto, Joanna also received a Certificate in Environmental Studies and a B.Sc., (Hons., High Distinction) in Biology and Environmental Science from the University of Toronto. Joanna is called to the bar in Ontario, Nunavut, and the Northwest Territories.
CPD Liaison
Graham Reeder he/him
Gowling WLG (Canada) LLP
Graham Reeder
Biography
Graham Reeder is an associate in Gowling WLG’s Toronto office. Graham completed his JD at Osgoode Hall Law School. During his time at Osgoode, he won awards for academic achievement and leadership. He also completed the Environmental Justice and Sustainability Clinic at Osgoode with a placement at an international NGO. Prior to law school, Graham worked with local communities to adapt to climate change in Bangladesh, Malaysia, and the Maldives after graduating from the College of the Atlantic with a Bachelor in Human Ecology. Graham completed his Master of Environmental Studies at York University in the accredited planning program, where he published his research on urban climate resilience in Southeast Asia. Prior to joining Gowling WLG as an associate, Graham worked with the firm as an articling and summer law student.Regional Representative
David S. McRobert
McRobert Law
David S. McRobert
Biography
David S. McRobert is an environmental lawyer based in southern Ontario with offices in Peterborough and Toronto. Between October 1994 and June 2010, he was In-House Counsel and Senior Policy Advisor at the Environmental Commissioner of Ontario and was involved in the establishment of the office. David has a B.Sc. in Biology from Trent University (1980) and a Master’s degree in Environmental Studies (MES) from York University (1984). He graduated with an LL.B. degree from Osgoode Hall Law School (1987) and was admitted to the Ontario Bar in 1990. Before joining the ECO, David was a senior policy advisor in the Waste Reduction Office in the Ontario Ministry of the Environment. From 1989 to 1991, he coordinated research and advocacy on waste management and global warming at Pollution Probe. He has also worked for the Workplace Health and Safety Agency in Toronto, the Ontario Round Table on Environment and Economy, the Ministry of Labour, and the Ministry of the Attorney General. David has published numerous articles and reports on a range of environmental issues. In the past two decades, he has prepared a number of reports, articles, and conference papers on a range of environmental subjects, including public participation and government accountability for environmental decision-making. Between 1991 and 2009, he taught courses on environmental law and policy to undergraduate students in the Faculty of Environmental Studies at York University and the University of Toronto and he continues to guest lecture on a wide range of topics.Member-At-Large
Matthew C.M. Lakatos-Hayward
Cassels
Matthew C.M. Lakatos-Hayward
Biography
Matthew is an associate in the Administrative Law Group at Goodmans. He is developing his practice in the area of land use planning and municipal law, with a particular emphasis on environmental law and alternative dispute resolution. Matthew acts for real estate developers, corporations, and landowners in connection with business, municipal, environmental, and planning disputes, including contaminated land lawsuits, impact assessment and regulatory prosecutions. He also advises clients on planning and environmental matters, including compliance, remediation, and natural heritage. Matthew has appeared before the Federal Court of Canada and has experience in multi-party arbitrations and mediations. Matthew obtained his J.D. from the University of Ottawa where he was named to the Dean’s List and graduated cum laude. While at law school, Matthew competed in the Willem C. Vis International Commercial Arbitration Moot, where his team received international recognition and was the highest ranking Canadian team. He was also the President of the Environmental Law Student’s Association and organized a national conference on environmental law.Student Member at Large
Julia Singer
Osgoode Hall Law School

Policy and Professional Development Lawyer
Jenny Commisso