Human Health Risk Assessment (HHRA) Services
Evaluation of Potential Human Health Concerns Associated with a Spectrum of Exposure Scenarios
Roux's team of toxicologists, industrial hygienists, epidemiologists, and human health risk assessors has evaluated complex issues in the context of product safety, environmental and occupational exposures, epidemiology, general causation, air toxics, and public health.
Our human health risk assessors guide efficient cleanup of contaminated sites via innovative technical approaches to exposure unit/land use assumptions, background contributions, historic fill, and statistical approaches under various regulatory regimes across the United States. Our human health risk assessors also provide important answers regarding potential community exposure from industrial sources. Roux’s industrial hygienists provide qualitative and quantitative assessments for commercial and industrial clients in various industries to assist them with both complex and regulatory challenges.
Roux’s team includes experienced expert witnesses who have offered expert opinions on general causation (mechanistic toxicity data, animal bioassays, and epidemiological data), dose reconstruction, epidemiology, and association of exposure-specific health outcomes. Roux has been retained and testified in some of the country’s highest profile cases, as outlined below.
HHRA Team
National Director of Human Health Risk Services
Vice President/Principal Scientist
Principal Scientist
Principal Scientist
Principal Scientist
Technical Director
Ariel Newman
Senior Scientist
Stella Keck, MPH
Senior Scientist
Justin Collins, MPH
Senior Scientist
Areas Of Expertise:
- Site-specific human health risk assessments from environmental media
- Contaminated site risk assessment
- Exposure science
- Dose reconstruction/exposure modeling
- Monte Carlo evaluations (probabilistic risk assessments)
- Evaluation and modeling of air emissions and concentrations
- Health-based risk allocation of liability
- Groundwater flow modeling
- Forensic air studies and risk assessments
- Environmental Justice concerns and assessments
- Occupational exposure assessments
- Area and personal exposure monitoring and measurement
- Development and/or guidance for sampling strategies
- Indoor air quality
- Exposure mapping
- Evaluation of biomonitoring data
- Development of workplace controls to mitigate identified or potential employee exposures
- Consumer product safety and regulatory compliance
- Food and Drug Administration (FDA), Consumer Product Safety Commission (CPSC), US EPA, California EPA, etc.
- Exposure assessments under California’s Proposition 65 (Prop 65)
- Regulatory basis for health-based standards
- Critical review of State and Federal regulations and advisory levels (e.g., PFAS, ethylene oxide, asbestos), derivation of site-specific levels
- Analyses of existing environmental data to inform decision-making
- Systematic literature reviews and weight of evidence analysis to inform decision-making
- Risk communication to non-technical audiences
- Participation in public meetings
- Written explanation of complex analyses or studies
- Testifying in jury trials or regulatory proceedings
- Assessment of potential health risk from emerging contaminants
- Examples: PFAS, microplastics, 6-PPD
- Environmental epidemiology
- Study design, analysis, and inference
- Evaluation of epidemiological studies
- Survey design and administration
- Biostatistical analyses
- Systematic literature reviews
- Weight of evidence analyses
- Toxic tort evaluations
- General causation
- Integrated analysis of mechanistic, toxicology, and epidemiology literature
- Systematic literature reviews
- Weight of evidence analysis
- Specific causation
- Evaluation of associations between specific exposures and health outcomes
- Alternative causation
- Assessment of other relevant factors associated with claimed health outcomes
- General causation
Related Services/Tools:
High-Profile Projects
Roundup Product Liability Litigation
MDL No. 2741
Roux testified in this Multi District Litigation (MDL) case. This MDL concerns plaintiffs' claim that the prolonged use of Roundup herbicide causes various cancers, such as Non-Hodgkin’s Lymphoma (NHL).
Click here to read moreAqueous Film-Forming Foams (AFFF) Products Liability Litigation
MDL No. 2873
Roux testified in this MDL case. This MDL concerns plaintiffs' claim that the prolonged exposure to PFAS chemicals released during AFFF training and use causes various adverse health effects.
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