• Intrinsik Science Inc. :: Science - Integrity - Knowledge
  • Intrinsik Science Inc. :: Science - Integrity - Knowledge
  • Intrinsik Science Inc. :: Science - Integrity - Knowledge
  • Intrinsik Science Inc. :: Science - Integrity - Knowledge
  • Intrinsik Science Inc. :: Science - Integrity - Knowledge

Elliot Sigal, BSc., QPRA

Office: Mississauga, Ontario
Position: Vice-President
Phone: +1 905 364-7800, ext. 222
Fax: +1 905 364-7816
Email: This e-mail address is being protected from spambots. You need JavaScript enabled to view it

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Elliot Sigal is a Vice President of Intrinsik Corp. and has over 25 years of experience in toxicology, modeling and, human health and ecological risk assessment.  Mr. Sigal graduated with an Honours B.Sc. in Toxicology from the University of Toronto in 1988.  Mr. Sigal has experience in all aspects of toxicology and risk assessment and he overseen and contributed to hundreds of risk assessments.  Mr. Sigal has been responsible for leading risk assessment teams in the determination of potential exposures and risks associated with complex contaminated sites, military base closures, underground storage tanks, incinerator emissions, landfill sites, consumer products and industrial processes.  He also has been involved in the use of toxicological principles to facilitate the risk assessment process, such as the development of a health-based method for the evaluation of total petroleum hydrocarbons (TPH), the provision of a benchmark comparison of remediation alternatives in order to determine economically feasible and scientifically sound solutions to risk management problems, the use of in vitro bioaccessibility methods and human biomonitoring studies (urinary arsenic and blood lead) in the risk assessment decision making process.

Mr. Sigal has conducted interpretive reviews of toxicology and mechanistic databases for a variety of chemicals including metals (i.e., arsenic, nickel), chlorinated organics (i.e., vinyl chloride, PCBs, dioxins and furans), volatile organic compounds (i.e., benzene, toluene), combustion gases (NOX, SOX), and PAHs (i.e., benzo[a]pyrene). Mr. Sigal has conducted peer reviews on many risk assessments in jurisdictions across Canada and the U.S., and has conducted reviews of risk assessments on behalf of the Ontario Ministry of the Environment and Health Canada. Mr. Sigal also has extensive project management experience and has been responsible for managing both small (a few thousand dollars) and large projects (over a million dollars).  Many of these initiatives involved integration of multi-company teams composed of engineering services, analytical services, as well as other technical and scientific efforts.   His role as a project manager has included responsibility for project budget, allocation of technical personnel, adherence to project schedule, and senior responsibility for ensuring that a quality, scientifically defensible product is received by the client.

Experience Highlights

  • Considered an authority in site-specific and community-wide risk assessment. He has led risk assessments and provided risk communication support for communities impacted by mining/smelting activities, power plants (gas and oil fired stations), waste management facilities (municipal, hazardous and medical incinerators and landfill sites), and industrial activities.
  • Has provided expert advice and review of RAs on behalf of the Ontario Ministry of the Environment and Health Canada, in the areas of human health risk assessment and toxicology; has also provided expert advice to municipal and provincial public health officials.
  • Led numerous high-profile risk assessment and environmental toxicology projects across Canada and internationally.
  • Called upon to provide peer review services for other consulting firms, industry and government agencies.
  • Provides scientific litigation support, including research, consultation, and testimony.
  • Research interest is the field of oral bioavailability of contaminants in the environment, and a member of Bioavailability Research Canada (BARC) .
  • Full member of the Society of Toxicology and the Association for Environmental Health and Sciences.
  • Over 50 scientific publications and presentations regarding toxicology and risk assessment.
  • A Qualified Person Risk Assessment (QPRA) under Ontario’s Record of Site Condition Regulation (O. Reg. 153/04) and Qualified Toxicologist (Air Standards Branch) in Ontario.


B.Sc., Honours, Toxicology, University of Toronto

QPRA, Qualified Person for Risk Assessment as defined by the Environmental Protection Act of Ontario (O. Reg. 153/04)

Service Areas