Harry Dahme Partner Leader - Toronto Environmental Law Group, Certified Specialist (Environmental Law)


Speaks:  English

Year of Call: 1984 - Ontario

Primary phone: + 1 416-862-4300

Fax: 416-863-3410

Email: harry.dahme@gowlingwlg.com

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Primary office:  Toronto




Harry Dahme

Harry Dahme is a partner in Gowling WLG's Toronto office and past leader of the firm's Environmental Law Group. He has practised exclusively in the area of environmental law since 1984, and has a solid reputation as one of the foremost environmental lawyers in Canada. Harry is certified by the Law Society of Ontario as a specialist in environmental law, and is described by Who's Who Legal: Canada 2014 as "widely regarded as a leading authority in the field," by Legal 500 Canada 2017 as "absolutely fantastic" and by Acritas Stars 2017 as "an acknowledged expert in environmental law."

Harry has been involved in all aspects of environmental law. He regularly advises on environmental risks in corporate transactions. He advises corporations and boards of directors on the development and maintenance of corporate environmental due diligence programs. He provides ongoing regulatory advice to businesses in a wide variety of sectors and has an active advocacy practice, which includes defence to prosecutions, appeals to various tribunals, including the Environmental Review Tribunal, and civil litigation with respect to environmental claims.

Harry also has specialized expertise in a variety of areas:

  • He has represented provincial agencies, municipalities, proponents and opponents in respect of waste management related matters since 1984.
  • In addition to his general expertise relating to water and wastewater, he is an acknowledged expert on outsourcing and private sector operation of water and wastewater facilities.
  • Harry's expertise relating to chemical substances includes representing importers, manufacturers and suppliers with respect to registration and licensing of chemical substances, and responding to proposed regulatory control or elimination from use of chemical substances.
  • His experience in respect of contaminated sites and Brownfield redevelopment has been widely recognized. He regularly advises on environmental aspects of property transactions, and remediation and redevelopment of Brownfields.

Harry has achieved numerous other recognitions for environmental law. He is also recognized as a leading infrastructure and energy lawyer.

Career & Recognition

Filter timeline:
  • 2018

  • 2017

  • 2016

  • 2015

    • Rankings & Awards
      December2015
      Who's Who Legal: Canada 2015
    • Rankings & Awards
      December2015
      Lexpert's Leading Lawyers in Energy 2015
    • Rankings & Awards
      November2015
      Chambers Canada 2016
    • Rankings & Awards
      November2015
      Who's Who Legal: Environment 2015
    • Rankings & Awards
      September2015
      Lexpert/ROB Special Edition on Infrastructure: Canada's Leading Infrastructure Lawyers
    • Rankings & Awards
      September2015
      The Best Lawyers in Canada 2016
    • Rankings & Awards
      September2015
      The International Who's Who of Business Lawyers 2015
    • Rankings & Awards
      July2015
      Canadian Legal Lexpert Directory 2015
    • Rankings & Awards
      April2015
      Chambers Global 2015
  • 2014

    • Rankings & Awards
      December2014
      Lexpert lists Gowlings as the top environmental law firm in Toronto
    • Rankings & Awards
      November2014
      Lexpert's Leading Lawyers in Energy 2014
    • Rankings & Awards
      October2014
      Lexpert's Guide to Canada's Leading Infrastructure Lawyers 2014
    • Rankings & Awards
      October2014
      Who's Who Legal: Canada 2014
    • Rankings & Awards
      September2014
      Who's Who Legal: The International Who's Who of Business Lawyers 2014
    • Rankings & Awards
      September2014
      The Best Lawyers in Canada 2015
    • Rankings & Awards
      July2014
      Canadian Legal Lexpert Directory 2014
    • Rankings & Awards
      April2014
      Chambers Global 2014
  • 2013

    • Rankings & Awards
      December2013
      Lexpert's guide to Canada's Leading Energy Lawyers
    • Rankings & Awards
      November2013
      Who's Who Legal: Canada 2013
    • Rankings & Awards
      October2013
      Who's Who Legal - The International Who's Who of Environment Lawyers 2013
    • Rankings & Awards
      October2013
      Lexpert - Canada's Leading Infrastructure Lawyers 2013
    • Rankings & Awards
      September2013
      The Best Lawyers in Canada 2014
    • Rankings & Awards
      May2013
      Starbucks International Excellence in Diversity Award
    • Rankings & Awards
      April2013
      Chambers Global 2013
    • Rankings & Awards
      February2013
      The Best Lawyers in Canada® 2013
    • Rankings & Awards
      2013
      Canadian Legal Lexpert Directory, Leading Energy Lawyer, 2013-2017
  • 2012

    • Rankings & Awards
      December2012
      Who's Who Legal: Canada 2012
    • Rankings & Awards
      October2012
      Lexpert Canada's Leading Infrastructure Lawyers 2012
    • Rankings & Awards
      July2012
      Canadian Legal Lexpert Directory 2012
    • Rankings & Awards
      July2012
      Who's Who Legal: The International Who's Who of Business Lawyers 2012
    • Rankings & Awards
      June2012
      PLC Which Lawyer? 2012
    • Rankings & Awards
      April2012
      Chambers Global 2012
    • Rankings & Awards
      February2012
      The Best Lawyers in Canada 2012
    • Rankings & Awards
      2012
      Chambers Global (Environmental Law), 2012-2016
    • Rankings & Awards
      2012
      Canadian Legal Lexpert Directory, Leading Infrastructure Lawyer, 2012-2015
  • 2011

    • Rankings & Awards
      December2011
      Who's Who Legal 2011
    • Rankings & Awards
      May2011
      Who's Who Legal - The International Who's Who of Business Lawyers, 2011
    • Rankings & Awards
      March2011
      PLC Which Lawyer? 2011
    • Rankings & Awards
      February2011
      Canadian Legal Lexpert Directory , 2011
    • Rankings & Awards
      February2011
      The Best Lawyers in Canada® 2011
    • Rankings & Awards
      2011
      Who's Who Legal: Environment, 2011-2015
    • Rankings & Awards
      2011
      The International Who's Who of Business Lawyers, 2011-2015
  • 2010

    • Rankings & Awards
      February2010
      Canadian Legal Lexpert Directory , 2010
    • Rankings & Awards
      February2010
      The Best Lawyers in Canada® 2010
    • Rankings & Awards
      2010
      Listed as a leading environmental lawyer in Canada in the Environment Handbook 2010/11, Fifth Edition, published by Practical Law Company
    • Rankings & Awards
      2010
      Listed in the Guide to the World's Leading Environmental Lawyers, 2010
    • Rankings & Awards
      2010
      Listed as a leading environmental lawyer in Canada in the Environment Handbook 2010/11, Fifth Edition, published by Practical Law Company
    • Rankings & Awards
      2010
      Listed in the Guide to the World's Leading Environmental Lawyers
  • 2006

    • Rankings & Awards
      2006
      Best Lawyers in Canada, Leading Lawyer in Environmental Law, 2006-2015
  • 2005

    • Rankings & Awards
      2005
      Canadian Legal Lexpert Directory (Environmental Law), 2005-2015
  • 1984

    • Qualifications (Year of Call/Admission, etc.)
      1984
      Year of Call, Ontario
  • 1982

    • Education
      1982
      Osgoode Hall Law School, LLB
  • 1977

    • Education
      1977
      University of Toronto, BSc.
  • 1972

    • Education
      1972
      York University, Fine Arts, 1972-1974
    • Rankings & Awards
      Certified by the Law Society as a Specialist in Environmental Law

Memberships

  • Canadian Bar Association
  • Law Society of Upper Canada

2017

  • "Canada's Chemicals Management Plan", Chemicals in the Americas Conference, Beveridge & Diamond, November 30
  • "Environmental Review Tribunal Costs Awards", Law Society of Upper Canada - Six Minute Environmental Lawyer, October 4
  • "Canadian Environmental Law Applicable to Contaminated Sites", 22nd Annual Contaminated and Hazardous Waste Site Management Course, GOwen Environmental Limited
  • "Chemical Management in Canada": Canadian Bar Association National Environmental, Energy and Resources Law Section
  • Discussion Facilitator "Advanced Environmental Law Practitioner Round-Table: The Legal Landscape Following Midwest, Crombi and Huang", Ontario Bar Association Environmental Law Section

2016

  • "What's Next etc.," Six Minute Environmental Lawyer, Law Society of Upper Canada
  • "Canadian Environmental Law Applicable to Contaminated Sites," 21st Annual Contaminated and Hazardous Waste Site Management Course, GOwen Environmental Limited

2015

  • "Canadian Environmental Law Applicable to Contaminated Sites," 20th Annual Contaminated and Hazardous Waste Site Management Course, GOwen Environmental Limited
  • "Law on Soil Environmental Protection," presented to the China Council for International Cooperation on Environment and Development

2014

  • "Canadian Environmental Law Applicable to Contaminated Sites," 19th Annual Contaminated and Hazardous Waste Site Management Course, GOwen Environmental Limited
  • "Applicable Law for Water and Waste Water," Economics 502-Economics of Natural Resources Ryerson University
  • "Environmental Causes of Action Post-Inco," The Six Minute Environmental Lawyer 2014, Law Society of Upper Canada
  • "Board of Review for Siloxane D5," Gowlings, Environmental Law for Business, 2014
  • "Private Sector Delivery of Water and Wastewater Infrastructure", Insight - Land Development & Planning Forum 2014
  • "Selected Topics in Environmental Law," SMART Remediation
  • "Directors' and Officers' Environmental Liability," Oatmeal Breakfast Seminar, Gowlings Waterloo Region

2013

  • "Canadian Environmental Law Applicable to Contaminated Sites," 18th Annual Contaminated and Hazardous Waste Site Management Course, GOwen Environmental Limited
  • "Environmental Liability of Borrowers and Lenders," Royal Bank (Mortgage Enforcement)
  • "Environmental Law Applicable to Infrastructure Projects," University of Windsor Law School, Large Scale Infrastructure Law Course
  • "Emerging Trends and Environmental Liabilities: City of Kawartha Lakes v. Director (Ministry of the Environment)," Provincial/Municipality Government Liability, Canadian Institute
  • Inspections and Investigations, "Understanding Environmental Regulations," EPIC
  • Spills, "Understanding Environmental Regulations," EPIC
  • Legal Liabilities, "Understanding Environmental Regulations," EPIC

2012

  • "Borrowers' and Lenders' Environmental Liabilities," speech to a lending institution
  • "Legal Issues Relating to Brownfield Development" presentation to Brantford Brownfield Community Advisory Committee
  • "Designated Substances - Duties of Building Owners," Gowlings Real Estate National Practice Group
  • "Board of Review for Siloxane D5," 24th Annual Meeting of the Canadian Bar Association and Justice Canada: National Environment, Energy and Resources Law Section
  • "Liability Protection in Operating and Maintenance Agreements," Environmental Law for Elected Officials and Industry Professionals, 2012 Drinking Water Leadership Summit
  • "Cross-Country Remediation Round-Up," International Sites and Spills Expo
  • "Extended Producer Responsibility & Waste Sector Servicing" (panel chairman), Canadian Waste & Recycling Expo
  • Contaminated Sites & Ontario Regulation 153/04, Training Workshop for the Regional Municipal of Durham
  • "Canadian Environmental Law Applicable to Contaminated Sites," 17th Annual Contaminated and Hazardous Waste Site Management Course, GOwen Environmental Limited
  • "Contaminated Sites and Designated Substances in Ontario," presentation to Gowlings' Hamilton office
  • "Ontario's Brownfields Regulation: Impact on Value and Remediation Approach," Smart Remediation
  • "Update on Changes to Ontario's Brownfields Regulation," Gowlings Oatmeal Series, (Waterloo Region office)

2011

  • "Changes to Ontario's Record of Site Condition Regulation Come into Effect on July 1, 2011," Ontario Real Estate Law Development, CCH Canadian Limited
  • "Environmental Law Applicable to Infrastructure Projects," Mega Projects in Canada: Canadian Large Scale Infrastructure Law, University of Windsor, Faculty of Law
  • "Canadian Environmental Law," Noble International University (speech to 22 judges from Dalian, China)
  • "Ontario's Brownfields Regulation and Impact on Value," Ontario Expropriations Association Fall Seminar
  • "Environmental Risk Management," Toronto Greenhouse
  • "Water and Energy," Canadian Water Summit
  • "Canadian Environmental Law Applicable to Contaminated Sites," 16th Annual Contaminated and Hazardous Waste Site Management Course, GOwen Environmental Limited
  • "Update on Ontario's Brownfields Regulation," Gowlings - Environmental Law for Business, 2011
  • "Fisheries Act: Compliance and Enforcement," 4th Canadian Wastewater Management Conference
  • "The Proactive Identification of Critical Environmental Issues in Off-Shore Wind Development," Off-Shore Wind: Canada, EUCI

2010

  • "Stormwater Regulation: Statutory Framework," Current Issues and Stormwater Regulations, Lorman Education Services
  • Moderator, "Cross-Country Check-Up: Assessing the State of Play of Brownfield Redevelopment Across Canada, and the Policies, Programs, Partnerships and Plans that are Having an Impact," Canadian Brownfields 2010: Making Great Places
  • "Update on Ontario's Contaminated Sites Regulation," Gowlings Waterloo Region Office Real Estate Seminar
  • "Obtaining Environmental Approvals," Ontario Tire Stewardship Workshop
  • "Changes to Ontario's Brownfields Regulation," Realtors Association of Grey Bruce Owen Sound
  • "Spills," Understanding Environmental Regulations, EPIC
  • "Enforcement: Inspection and Investigation," Understanding Environmental Regulations, EPIC
  • "Liability and Legal Defence," Understanding Environmental Regulations, EPIC
  • "Changes to Ontario's Brownfields Regulation," Gowlings Real Estate Breakfast Seminar
  • "Changes to Ontario's Brownfields Legislation," Gowlings-Environmental Law for Business, 2010
  • "Waste Disposal Site and Waste-to-Energy/Energy-from-Waste Approvals," Ontario Bar Association: Environmental Law Section (What a Waste: Stewardship Ontario, Waste Diversion and Waste-to-Energy Projects)
  • "Changes to Ontario's Brownfields Regulation," Ontario Real Estate Association

2009

  • "Provincial Regulation of Water," Understanding Environmental Regulations, EPIC
  • "Regulation of Waste and Waste Management," Understanding Environmental Regulations, EPIC
  • "Spills and Spills Reporting," Understanding Environmental Regulations, EPIC
  • "Environmental Inspections and Investigations," Understanding Environmental Regulations, EPIC
  • "Environmental Liability and Defence Strategies," Understanding Environmental Regulations, EPIC
  • Moderator and Speaker, "Brownfields, Green Building, and Other Forms of Sustainable Development: The Cost Benefit is on the Rise," Land & Development Conference
  • "Canadian Brownfields," Gowlings Real Estate National Practice Group
  • "Liability for Contaminated Sites and Canadian Environmental Law Applicable to Contaminated Sites," GOwen Environmental
  • "Brownfields, Green Building Other Forms of Sustainable Development: The Cost Benefit is on the Rise," Land and Development Conference
  • "Brownfields - Ontario Update," Environmental Law for Business
  • "Canada's Management of Chemicals," Environmental Law for Business
  • "Environmental Law Update," Samuel Manutech
  • "Legal Issues: Storm Water Quantity and Quality": Environmental Management of Storm Water and Land Development, EPIC

2008

  • "The Utility File: Maximizing a Municipality's Energy and Water Assets," 2008 AMO Annual Conference
  • "Liability for Contaminated Sites and Canadian Environmental Law Applicable to Contaminated Sites," GOwen Environmental
  • "Region of Peel: An Example of A Successful Government Procurement," Henan Province, Delegation (China)
  • "Managing Risks: Overcoming the Public Perception Challenge Facing Waste Management Options," Canadian Institute
  • "Water Law in Canada: Is it Adequate for Long Term Protection of Drinking Water?" Union Internationale des Avocats, 52nd UIA Congress
  • "Enforcement of Environmental Regulations and Standards: Understanding Environmental Regulations - Due Diligence (Water; Spills and Emergency Response; Inspection and Investigation; Enforcement of Environmental Regulations and Standards)," EPIC
  • "Cross-Country Check Up," Hot Properties: Canadian Brownfields 2008, Urban Development Institute

2007

  • Chair, "Water and Wastewater Infrastructure Renewal", Canadian Urban Institute
  • "Canada's Chemical Management Plan", Environmental Law for Business Conference: Gowlings, November 29, 2007
  • "Canadian Brownfields Legislation and Practice", Environmental Law for Business Conference: Gowlings, November 29, 2007
  • "Cross Country Review of Provincial Contaminated Sites Legislation" Brownfields 2007, Canadian Urban Institute
  • "Understanding Environmental Regulations-Due Diligence: Enforcement of Environmental Regulations and Standards", Educational Program Innovations Centre ("EPIC")
  • "Understanding Environmental Regulations-Due Diligence: Enforcement, Inspection and Investigation", Educational Program Innovations Centre ("EPIC")
  • "Understanding Environmental Regulations-Due Diligence: Liability and Legal Defence", Educational Program Innovations Centre ("EPIC")
  • "Environmental Law Up-Date", Gowling Lafleur Henderson LLP
  • "Contaminated Sites Legislation and Case Law in Canada", 12th Annual Course: Contaminated and Hazardous Waste Site Management, GOwen Environmental
  • "Chemical Regulation in Canada and the U.S.", Gowling Lafleur Henderson LLP and Thompson Hine Webinar

2006

  • "Cross-Country Check-Up 2006: The Link Between Legislation and Implementation", Canadian Brownfields 2006: Developing the New Real Estate Frontier.
  • "Canadian Environmental Workshop, August 30, 2006 - Regulatory Update", Goodyear Canada Inc.
  • "11th Annual Course: Contaminated and Hazardous Waste Site Management" Gowen Environmental
  • "Legal Aspects of O. Reg. 419/05", Air & Waste Management Association, Ontario Section
  • "Legal Aspects of O. Reg. 419/05", Canadian Foundry Association 2006

2005

  • "Ontario Regulation 419/05", Year in Review Environmental Conference 2005.
  • "Ontario Waste Disposal Crisis" Year in Review Environmental Conference 2005.
  • "Cross Country Check Up" Canadian Brownfields 2005
  • "Contaminated and Hazardous Waste Site Management: Theory, Practice & Outdoor Field Demonstrations", GOwen Environmental Ltd.
  • 3rd Annual - Water and Wastewater in Ontario, Insight Information Co., "Contracting Out Municipal Water & Wastewater Services: A Changing Landscape".
  • "Liability in Respect of Water and Wastewater", The Ontario Good Roads Association.
  • "Brownfields' Site Liability Management in the Era of the Brownfields' Bill and its Regulations", Knowledge Workshop Series: Redeveloping Ontario's Brownfields', Canadian Brownfields' Network and aboutREMEDIATION.com. (North Bay, Ontario - January)
  • "Brownfields' Site Liability Management in the Era of the Brownfields' Bill and its Regulations", Knowledge Workshop Series: Redeveloping Ontario's Brownfields', Canadian Brownfields' Network and aboutREMEDIATION.com. (Thunder Bay, Ontario - March)

2004

  • "Recent Initiatives Regarding Hazardous Waste", What's New in Environmental Law & Regulation in Ontario Conference, Canadian Institute
  • "Recent Developments in Environmental Assessments", What's New in Environmental Law & Regulation in Ontario Conference, Canadian Institute
  • "Quenching the Thirst: Aboriginal Water & Wastewater Projects", The 12th Annual Conference on Public-Private Partnerships, Canadian P3: Under the Microscope, Canadian Council for Public Private Partnerships
  • "Recent Developments in Environmental Assessments", Environmental Law & Regulation in Ontario Conference, Canadian Institute
  • "Canadian Provincial And Federal Environmental Law Applicable To Contaminated Sites", Contaminated And Hazardous Waste Site Characterization And Remediation Course, Gowen Environmental Ltd.
  • "4th Annual Conference on Safe-Drinking Water: Meeting your Obligations in an Era of Transition", Chairperson, Canadian Institute
  • "Legislative & Policy Context" and Panel Chair, "From Policy to Breaking Ground: A Cross Country Round-Up of Policy and Legislative Initiatives Illustrated with Case Studies", Brownfields 2004 Conference Turning up the Heat!, Canadian Urban Institute
  • "Liability in Respect of Water and Wastewater", Preventing Liability & Minimizing Risk in the Public Sector, Federated Press
  • "Water and Waste Water - A New Era in Risk Management", Society of Public Insurance Administrators of Ontario Extended Workshop
  • "Understanding the Legal Framework for Redeveloping Brownfields", Strategy Institute
  • "Waste Management Strategies, Innovations and Solutions: Public Private Partnerships for Waste", Strategy Institute

2003

  • "Report Card on Canada's Approach to Brownfields - Positive But Uneven Progress", Canadian Urban Institute
  • "Environmental Inspections Investigations and Enforcement: The Year in Review and Look Ahead", Canadian Institute
  • "Collection of Data - Legal Aspects", "Presentation of Sampling and Data Analysis - Legal Aspects" Effective Environmental Monitoring Sampling, Educational Program Innovations Centre (EPIC)
  • Public-Private Partnerships: Focusing on The Nuts and Bolts of a Successful PPPSs "Old Ghosts: Closed Landfills and Abandoned Industrial Sites", OBA 2003 Annual Institute
  • "Tackling the Challenges Ahead for Water Service Delivery - A Constructive Role for the Private Sector?", moderator and speaker, Insight,
  • "The Walkerton Inquiry Recommendations Relating to the Private Sector" and "Public Private Partnership: Examples Which Work.", Water and Wastewater: Regulation Management Forum
  • "Environmental Law", Instructor, University of Western Ontario (Faculty of Law)

2002

  • "Environmental Compliance: Landfill Design and Management for Long Term Performance", EPIC
  • "Current Trends and Legislation in Canada", Brownfields 2002, Canadian Urban Institute
  • "Federal Update: Key Legal Developments That Affect Industry in Ontario", The Canadian Institute 5th Annual What's New In Environmental Law and Regulation in Ontario
  • "Contractual Protection of the Public Interest in Water", Managing Shared Waters: Towards Sustainable Transboundary Coastal Ecosystems
  • "Due Diligence: What are your Environmental Responsibilities?", Ontario Independent Meat Processors (OIMP)
  • "Brownfields", Canadian Association of Municipal Administrators (CAMA)
  • "Provincial Environmental Law, Regulation and Policy", EPIC
  • "Environmental Decommissioning and Cleanup: Legal Perspective", EPIC
  • "Regulatory Considerations Relating to Environmental Decommissioning", EPIC
  • "Contractual Protection for Municipal Water and Waste Water Facilities", Canadian Urban Institute 4th Annual Municipal Infrastructure Partnership Conference
  • "Environmental Law Update", Gowling Lafleur Henderson LLP, Waterloo Region

2001

  • "Air Emissions Reduction Credit Trading", Industrial Accident Prevention Association (Printing Trade Conference)
  • "ISO 14000 and Managing Legal Risks", KPMG
  • "New Service Delivery Options: P3 Agreements That Work", Insight

2000

  • "P3 Agreements that Work", The Canadian Council for Public-Private Partnerships, 8th Annual Conference
  • "Legal Framework for Emissions Reduction Credits Trading", EPIC
  • "Consultant Section and Contractual Issues", EPIC
  • "Legal Issues Related to the Presentation of Sampling Data Analysis", EPIC
  • "Legal Issues Related to the Investigation of Fires in Buildings", EPIC
  • "Regulatory Aspects of Emissions Trading", EPIC
  • "National and International Markets for Emissions Trading", EPIC
  • "Canadian Association of Metal Finishers - The Importance of Industry Associations", Finishing Technologies 2000
  • "Monitoring and Reporting of Emissions and Emissions Reduction Credit Trading", CleanPrint Canada

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