Company Description

Terrapex is a Canadian, employee-owned company providing specialized consulting services in environmental, geotechnical, hydrogeological, and health and safety fields across Ontario. With offices in Toronto, Ottawa, Hamilton, and the Durham Region (Oshawa), our multidisciplinary team of engineers and scientists deliver expert, practical solutions.

Built on our core values of integrity, technical excellence, respect, personal service, and a practical approach, Terrapex has grown steadily since 1995. Our diverse and dedicated team takes pride in a reputation for quality work and lasting client relationships.

Why Join Terrapex?

We value our people and invest in their success. Employees enjoy:

• Extended Health & Dental Benefits
• LTD, Life and AD&D Insurance
• Company Group RRSP Match
• Health Care Spending Account
• Employee Assistance Program (EAP) and Wellness Initiatives
• Generous Personal Time Off
• Memberships in Professional Societies
• Support for Professional Designations
• Bonus Opportunities
• Flexible Work Arrangements

The Opportunity – EnvironmentalRisk Assessor

We are seeking an Environmental Risk Assessor to join our Environmental Services – Risk Assessment team. This role is ideal for a professional who thrives on developing detailed environmental risk assessments, applying scientific expertise, and collaborating within a multidisciplinary team environment.

This role offers a salary range of $80,000 – $105,000 per year, depending on qualifications and experience and can be based at any of our locations.

Position Highlights:

• 5–8 years of experience in human health and/or ecological risk assessment in Ontario
• Recognition as, or the ability to become recognized as, a QPRA per O. Reg. 153/04
• Strong knowledge of MECP regulations and risk assessment frameworks
• Experience with environmental modeling tools (e.g., MECP MGRA, HC PQRA, RBCA, Johnson & Ettinger)

What You’ll Do:

• Preparing human health and ecological risk assessments in accordance with regulatory and industry standards;
• Assisting in the development of risk-based contaminant management strategies for various clients;
• Communicating with internal and external clients;
• Review of regulatory and guidance documentation;
• Analyzing data for trends and completeness, and to determine significance to the project and the client;
• Reviewing and summarizing Environmental Site Assessment and soil vapour sampling work programs;
• Development of Risk Assessment Human Health and Ecological Conceptual Site Models;
• Proper execution of both standard modeling software and internal proprietary models;
• Compilation of Risk Assessment documentation;
• Assisting in the provision of technical expertise and advice to project staff;
• Mentor junior RA team members; and,
• Exemplifying the core values and vision and mission statements of Terrapex in all aspects of their work.

What We’re Looking For:

• A bachelor’s or master’s degree in a related field of study such as toxicology, ecology, geology, environmental science, environmental chemistry, or environmental engineering.

• Between 5 and 10 years of progressive experience in completing human health and/or ecological risk assessments in Ontario, in either a consulting or regulatory setting.

• Recognition, or the ability to become recognized, by the Ontario Ministry of the Environment, Conservation and Parks as a Qualified Person for Risk Assessment (“QPRA”) per Section 6 of O. Reg. 153/04.

• A strong understanding of regulations and standards applicable to environmental risk assessment, including O. Reg. 153/04, RBCA, FCSAP and a basic understanding of other relevant regulations and standards pertinent to supporting investigations (Phase One and Two ESAs, soil vapour sampling, etc.) such as O. Reg. 406/19, Reg. 903, and CSA and ASTM Standards.

• Experience with Phase II Environmental Site Assessments (ESAs) and Conceptual Site Models (CSMs) is considered an asset.

• A solid understanding of toxicology, contaminant fate and transport, vapour intrusion, exposure pathway analysis, and data evaluation as they relate to environmental risk assessment.

• Knowledge and proficiency with common risk assessment models (e.g., MECP MGRA, Health Canada PQRA, Johnson & Ettinger, RBCA).

• Strong ability with Microsoft Office suite of programs, including Excel and Word.

• Proven ability to work within quality/budget/schedule expectations.

• Strong organizational and time management skills.

• Excellent oral and written communication skills.

Our Commitment to Health, Safety, and Inclusion

The health and safety of our employees, clients, and communities is a top priority. All staff are expected to follow Terrapex’s Health, Safety & Environment (HSE) policies and applicable client requirements. Safety-sensitive roles may require candidates to perform essential physical tasks and work in varied conditions, including remote sites or inclement weather, within safe limits.

While we appreciate the interest of all applicants, only those candidates who have been selected for an interview will be contacted.

Terrapex is committed to providing a diverse and barrier‑free work environment in concert with the Accessibility for Ontarians with Disabilities Act and the Ontario Human Rights Code. As such, Terrapex will make accommodations available to applicants upon request during the recruitment process.

We do not use AI-based tools for screening, assessing, or selecting candidates. All applications are reviewed by a member of our human recruitment team. The position is for an existing vacancy.

Disclaimer: Unsolicited referrals and/or resumes submitted from vendors, including recruiting, search and staffing agencies in the absence of a signed recruitment agreement shall not be considered binding and will become the independent property of Terrapex.