Gradient
Gradient is an environmental and risk sciences consulting firm committed to scientific excellence since 1985. They employ multidisciplinary scientific principles to help clients understand and resolve complex environmental and health challenges, delivering responsive and protective work products with high professional standards. The company values integrity, objectivity, and independent scientific interpretation, and is dedicated to building an inclusive, collaborative, and innovative work environment. With a global project portfolio spanning 31 countries, Gradient addresses pressing issues across various market sectors and service areas, including toxicology, epidemiology, risk assessment, product safety, and environmental sciences. They actively participate in community involvement and scientific advisory roles, and have received numerous awards and recognitions for their contributions to science and environmental health.
Industries
Nr. of Employees
medium (51-250)
Gradient
600 Stewart Street, Suite 1900, Seattle, WA 98101
Services
Expert toxicology and epidemiology analyses to support human health risk assessments, exposure modeling, and regulatory decision-making.
Preparation of preliminary and abridged alternatives analyses, hazard and exposure scoring, lifecycle comparisons, and direct engagement with regulatory agencies.
Analytical interpretation, source apportionment, and forensic approaches for contaminated sediments, soils, and waters including PFAS and persistent organic pollutants.
Spatial analyses to support exposure assessment, site characterization, and identification of potentially responsible parties.
Workplace exposure monitoring, development of occupational exposure values, and industrial hygiene program support.
Economic analysis of remediation options, cost allocation modeling, and uncertainty evaluation to inform remedial decision-making.
Expert toxicology and epidemiology analyses to support human health risk assessments, exposure modeling, and regulatory decision-making.
Preparation of preliminary and abridged alternatives analyses, hazard and exposure scoring, lifecycle comparisons, and direct engagement with regulatory agencies.
Analytical interpretation, source apportionment, and forensic approaches for contaminated sediments, soils, and waters including PFAS and persistent organic pollutants.
Spatial analyses to support exposure assessment, site characterization, and identification of potentially responsible parties.
Workplace exposure monitoring, development of occupational exposure values, and industrial hygiene program support.
Economic analysis of remediation options, cost allocation modeling, and uncertainty evaluation to inform remedial decision-making.
Expertise Areas
- Risk assessment
- Toxicology
- Epidemiology
- Environmental/forensic chemistry
Key Technologies
- In silico hazard prediction
- Read-across methods
- Chemical scoring/index approaches
- Monte Carlo simulation
News & Updates
Gradient's abstract received the award for risk assessment at the SOT 2025 Annual Meeting. The abstract was authored by Gradient scientists Satori A. Marchitti, Ph.D., DABT, and Lisa A. Bailey, Ph.D.
Gradient’s scientists and graphic artist contributed to a cover article on hazard-screening methods for safer chemicals, published in ACS Sustainable Chemistry & Engineering April 2018.
Gradient is scheduled to present multiple platform and poster presentations at the Battelle Sediments Conference in New Orleans, LA, February 11-14, 2019.
Gradient has five presentations at the 2023 Battelle Sediments Conference in Austin, TX, January 9-12, 2023.
Gradient’s Dr. Barbara D. Beck was recognized for her publication on arsenic exposure and toxicology.
Gradient scientist Dr. Barbara D. Beck received the Society of Toxicology Metals Section Career Achievement Award in 2023.
Gradient's abstract received the award for risk assessment at the SOT 2025 Annual Meeting. The abstract was authored by Gradient scientists Satori A. Marchitti, Ph.D., DABT, and Lisa A. Bailey, Ph.D.
Gradient’s scientists and graphic artist contributed to a cover article on hazard-screening methods for safer chemicals, published in ACS Sustainable Chemistry & Engineering April 2018.
Gradient is scheduled to present multiple platform and poster presentations at the Battelle Sediments Conference in New Orleans, LA, February 11-14, 2019.
Gradient has five presentations at the 2023 Battelle Sediments Conference in Austin, TX, January 9-12, 2023.
Gradient’s Dr. Barbara D. Beck was recognized for her publication on arsenic exposure and toxicology.
Gradient scientist Dr. Barbara D. Beck received the Society of Toxicology Metals Section Career Achievement Award in 2023.