Environmental Consulting

Since 1979, we provide unparalleled environmental services to our clients.

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Occupational Hygiene

Our teams include Certified Industrial Hygenists & Registered Occupational Hygenists.

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Health & Safety

Our training programmes include legislation & working with hazardous materials.

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Hazardous Materials

Our hazardous materials management system includes waste, characterization & audits.

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T. Harris Environmental Management Inc. (THEM) is a leading Canadian environmental consulting firm in the following fields:



Our professional staff serve a wide range of clientele including commercial, government, industrial institutional, and residential.

We inspire and empower companies to achieve excellence in creating safe and healthy environments. We strive to create an engaged, proactive society which values and protects the health and safety of people and the environment.


Our Commitment

We are passionate about health & safety and committed to excellence. Since 1979, we continue to provide high quality services. We take pride in building long-term relationships with our clients. We are dedicated to understanding your concerns and meeting your needs by delivering efficient, cost-effective solutions.


Our Experience

T. Harris Environmental Management (THEM) is an established leader in the environmental consulting industry. It is the first consultancy in Canada to specifically address the hazards of asbestos. Since then,  THEM has evolved into a fully integrated consulting business that possesses a broad range of expertise.


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Our Mission

To be the preeminent niche environmental and occupational health and safety consulting firm in Ontario, Quebec and Alberta.


Our Vision

To enhance our position as a premier niche environmental consulting company based on knowledge, innovation, technology, and be at the forefront of emerging EHS concerns and regulatory changes. We will achieve this by further developing our expertise, fostering growth of our team, synergistic relationships, excellence in performance, and strengthening client relationships.


Value Statement

Since 1979, THEM is committed to understanding and providing our clients in the institutional, commercial and industrial (ICI) sectors, with a variety of environmental and occupational health and safety solutions to their concerns. We   meet our client’s needs by informing them of their options, reducing risk, anxiety, and formulating qualitative, practical, efficient, and cost-effective solutions.



Our Affiliations

What Our Clients Say


“I engaged THEM to complete an environmental site assessment on a large redevelopment site that spanned several registered lots. THEM worked diligently to persuade the municipality having authority and third-party agencies to consider this redevelopment site as consolidated in order to avoid duplication of requirements and time required to complete the assessment. I am satisfied THEM kept me well advised by providing solutions as unanticipated challenges arose.

It is always a pleasure to work with THEM. I would recommend THEM for any difficult or atypical investigation.

– Douglas Haines, Maclab Development Group


Over the past fourteen years, T. Harris Environmental Inc. has worked with PCL on three large asbestos abatement projects within the Ottawa area. These landmark projects include the Victoria Memorial Museum Building Rehabilitation project, the Saint Vincent Hospital Renovations and Addition project and currently, the West Block Rehabilitation Project. Given the complexities and challenges of these projects, their knowledge, practicality and quick response to issues has been an asset for the owners, consultants and contractors.

– Irvin Heiber, PCL Constructors Canada Inc.


I wanted to thank T.Harris for your fantastic customer service, prompt response, availability to meet my needs and follow-up. Your team was very professional, knowledgeable and friendly. The onsite technician answered all my questions and even provided me with additional resources to potential issues outside of the test they were conducting. I will definitely recommend T.Harris for any of your services to friends and clients.

– Amanda Williams, Homeowner


We are a high-end residential contractor company and ESA provided a list of qualified companies that could provide testing and a report re possible asbestos on the property we had renovated. We contacted T. Harris Environmental Management Inc. who were very professional in explaining the process, provided a quote and were able to conduct the testing and deliver a report in less than 24 hours. The service we received was exemplary. We would highly recommend the services of T. Harris Environmental Management Inc. and we will definitely contact them in the future.

– David E. Strathy, Montclair Construction Limited



T. Harris Environmental Management Inc. COVID-19 Announcement

Dear Friends

As you are dealing with the unprecedented business disruptions and challenges caused by the novel coronavirus (COVID-19), we don’t want to overwhelm you with another announcement on our preparedness to support you during this difficult time. However, we do want to emphasize that our motto at T. Harris Environmental Management Inc. (THEM) is:

“We treat our clients as friends, because you never let a friend down”

It is in these difficult times that this takes on more meaning and our team is committed to ensuring that we don’t let you down if you need us. The health and safety of our team is paramount so that we can take care of your needs, including maintaining our operational capacity during this stressful time. As such, we have implemented all precautions that we can to mitigate any disruption with our service offerings. In addition, Richard Quenneville, B.Sc., CIH, ROH and Dr. Carl Fisher, PhD (Medical Biophysics), our Senior Director-Corporate Services and Senior Science Advisor, respectively, are reviewing related literature on a daily basis to ensure that we can provide you with relevant and practical information if called upon.

We would like to take this opportunity to provide you with an updated list of contacts to help alleviate any problems that may arise during this transitory period. In addition, we would like to reaffirm our ongoing effort to consistently provide the highest possible standards of service to our clients and suppliers during the COVID-19 outbreak and we will endeavor to provide the same dedicated and professional services that you are accustomed to.

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