• 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

Leadership and Senior Staff

Chemicals Group

Dr. Donald Davies, Ph.D., DABT

Chairman and Senior Vice President

Dr. Davies brings a wealth of technical knowledge to the account. He is fluent in the science of toxicology and its application to chemical hazard evaluation, public health risk assessment, worker hazard identification and product approval processes. During his 20-year professional career in toxicology, Dr. Davies has accumulated considerable practical working experience related to the assessment, interpretation and communication of the health risks related to chemical exposures both in the workplace and in the public domain.

Dr. Davies holds B.Sc. (Biochemistry), M.Sc. (Nutrition) and Ph.D. (Nutrition and Toxicology) degrees.  He is a member of the Society of Toxicology, the American College of Toxicology, the International Society of Regulatory Toxicology and Pharmacology, and the Society of Environmental Toxicology and Chemistry. In addition, he has served on various national and international technical committees concerned with chemical hazards and environmental risks, including the Natural Sciences and Engineering Research Council of Canada (NSERC), the Industry Coordinating Group of the Canadian Chemical Producers Association (ICG) and the Organization for Economic Cooperation and Development (OECD). Dr. Davies is a Diplomate of the American Board of Toxicology (DABT).

Roger Breton, M.Sc.

Senior Scientist

Mr. Breton’s graduate training includes a M.Sc. in chemistry in 1990. Mr. Breton has considerable expertise in ecological risk assessment (ERA) including the development of exposure and effects assessments of aquatic and wildlife species. He has conducted assessments on numerous commercial chemicals, pesticides and other environmental contaminants. He worked in the Existing Substances Branch of Environment Canada where he managed, co-lead and/or assessed chemical substances that were part of the Priority Substances List Program and the Categorization and Screening of the Domestic Substances List (CSDSL) Program. The CSDSL involved assessing the persistence, bioaccumulation and inherent toxicity of nearly 23,000 substances. Mr. Breton conducted the ecological risk assessments of pesticides including brodifacoum, chlorothalonil, chlorpyrifos and azinphos-methyl, bifenthrin,, permethrin, methomyl, tefluthrin, fluoxypyr, pendimethalin, trichlorfon, malathion, quintozene and others. Most assessments involved the development of probabilistic exposure and effects models useful in determining the magnitude of risk to species of interest. Mr. Breton has been involved in conducting ecological risk assessment of threatened and endangered (T&E) species exposed to pesticides. He has participated in other T&E national pesticide assessments, and targeted T&E species assessments. Mr. Breton has been involved in preparing an ecological risk assessment for the Housatonic River and the Calcasieu Estuary Superfund sites for the U.S. EPA; his responsibilities included writing the exposure, effect and risk characterizations for the wildlife assessment of piscivorous, omnivorous and carnivorous mammals. Mr. Breton has expertise in structure-activity relationships (SARs), quantitative structure-activity relationships (QSARs) and chemical clustering (chemical similarity searching) using Leadscope Hosted. He is a current member of the Society of Environmental Chemistry and Toxicology (SETAC).

Dr. Dwayne Moore, Ph.D.

Senior Vice President and Senior Scientist

Dr. Dwayne Moore has a B.Sc. in Biology from the University of Western Ontario, and a M.Sc., and Ph.D. in wetland community ecology from the University of Ottawa. After graduating, he worked for six years at Environment Canada, the first two years developing environmental quality guidelines for industrial chemicals, and the last four years conducting ecological risk assessments for priority substances in Canada. He was with the Cadmus Group for over seven years, first as a Senior Associate and then as a Principal.

Dr. Moore has considerable expertise in ecological risk assessment, wildlife exposure modeling, the development of environmental quality guidelines and criteria, community ecology, statistics, uncertainty analysis, and analysis of toxicity data. Dr. Moore has managed over 150 projects for Canadian, U.S. and international clients in government and industry and participated in many others. He recently led the development of a probabilistic exposure and risk model for birds exposed to granular pesticides, and is currently developing a similar model for liquid pesticides. Dr. Moore has led or is currently leading assessments being conducted for threatened and endangered species in the United States for a variety of pesticides including aldicarb, atrazine, azinphos-methyl, brodifacomb, chlorthalonil and simazine. Previously, Dr. Moore led the ecological risk assessment for the PCBs-contaminated Housatonic River in Massachusetts on behalf of the U.S. EPA, and is participating in oversight of the ecological risk assessment for the Anniston Site in Alabama on behalf of U.S. EPA. Previously, he co-led the ecological risk assessment of the Calcasieu Estuary in Louisiana also on behalf of the U.S. EPA. Dr. Moore has been involved in projects to prepare guidance, training, and case studies for probabilistic risk assessments for several agencies including the ACC, CEFIC, Environment Canada, pesticide companies, and the U.S. EPA Office of Pesticide Products. He led a team that recently completed a project to develop ambient water quality criteria for mercury for the Water Environment Research Foundation. Dr. Moore co-chaired the Society of Environmental Toxicology and Chemistry (SETAC) Pellston conference on the use of uncertainty analysis in ecological risk assessment and co-edited the book that followed from the conference. He recently served on the SETAC Pellston steering committee for Probabilistic Risk Assessments of Pesticides. Dr. Moore has participated in several other Pellston workshops (e.g., assessing multiple stressors, re-evaluation of environmental quality criteria), and has participated in numerous U.S. EPA Science Advisory Panels, Science Advisory Boards and other U.S. EPA peer review workshops.

Consumer Products Group


Jon Daniels, Ph.D, DABT, ERT

Executive Vice President and Senior Toxicologist

Dr. Daniels is a consulting toxicologist whose principal focus is the assessment of safety of regulated products and regulatory toxicology. Dr. Daniels interacts frequently on behalf of domestic and international clients with regulatory agencies such as FDA, EMA, and Health Canada on product development and safety matters.

For nearly 20 years, Jon has been extensively involved in the development of safety programs for pharmaceuticals, consumer products, food products, supplements, and medical devices,  and in the evaluation and presentation of safety data in support of regulatory filings. Dr. Daniels also conducts and reviews toxicological risk assessments for consumer products under the US, Canadian and European regulations.
Dr. Daniels holds a Ph.D. degree in Pharmacology & Toxicology, is board certified as a Diplomate of the American Board of Toxicology (DABT), and is a Registered Toxicologist in Europe.

Geoff Goodfellow, Ph.D, DABT

Director  of Toxicology

Dr. Goodfellow's is a toxicologist with a primary focus on the  of safety programs for pharmaceuticals and consumer products and he has been involved in the design and development of protocols for hundreds of toxicological studies including general toxicology,  genotoxicity, reproductive and developmental toxicity, and carcinogenicity studies. Dr. Goodfellow also conducts and review toxicological risk assessments for consumer products under the US, Canadian and European regulations.

Dr. Goodfellow has authored or co-authored over 150 publications, expert reports, or regulatory submissions, including peer-reviewed articles of scientific, research-based papers and regulatory topics. Dr. Goodfellow has also been invited to participate in several drug development/regulatory toxicology workshops and has given presentations at national and international meetings.
Dr. Goodfellow graduated with a B.Sc. (Honours) in Life Sciences and holds a M.Sc. and Ph.D. in Pharmacology. In addition, he is board certified as a Diplomate of the American Board of Toxicology and is a Registered Toxicologist in Europe.