About Us

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LEHDER Environmental Services is an environmental consulting company focused on providing Excellence in Industrial Air Quality Services. Watch our video to learn more about our commitment to comprehensive, innovative consulting services and how LEHDER's services can help you. 

A photo of a chemical plant within Chemical Valley, just outside Sarnia, Ontario

Meeting the Needs of Industry

Formed in 1995, LEHDER Environmental Services is now one of the largest Air Quality Management companies in Canada. At LEHDER we recognize our client’s need to make decisions that provide for operational flexibility while meeting regulatory, economic and social requirements.

All Air Quality aspects are managed internally without outsourcing and partnering.

The LEHDER name is pronounced LEADER and comes from the surnames of the original founding partners of the company:

The name was selected to reflect our commitment to being an innovative leader in consulting services.

There are now a total of seven Principals at LEHDER:
Peter Pakalnis became a Principal at LEHDER In March 2003
Marnie Freer was appointed as Principal in August 2005
Penny McInnis joined the management team as Principal in November 2012

Industries We Service

We provide services to companies in varying industries:

  • Petroleum and petrochemical sectors
  • Steel manufacturers
  • Mining and smelting
  • Glass manufacturing
  • Chemical industries
  • Power producers
  • Health care facilities
  • Government agencies
  • Food processors
  • Pharmaceutical manufacturers
  • Marine transport

Our Team

LEHDER's highly skilled, multidisciplinary team works cohesively to provide integrated solutions for our clients to address complex situations. Our team consists of the industry’s top consulting professionals including:

  • Engineers
  • Scientists
  • Information management specialists
  • Industrial hygienists
  • Biologists
  • Technologists

The Head Office for LEHDER is located in Point Edward, Ontario - adjacent to Sarnia. Our Western division is based in Edmonton, Alberta.


                             LEHDER Mission Statement: LEHDER will provide uncompromising quality in services to ensure that we meet our customers' requirements. We continually strive for excellence in: Personal development, Information management, Integrated services.