Cityscape of Portland, Oregon at sunset with Mount Hood in the background. Text reads: “46th Annual Meeting SETAC North America, November 16–20, 2025 | Portland, Oregon.” Geosyntec Consultants logo and Brian Hitchens featured in the top right corner.
Published On: November 11th, 2025

Geosyntec Significantly Contributes to SETAC Annual Meeting

Geosyntec practitioners will contribute to the Society of Environmental Toxicology and Chemistry (SETAC) North America 46th Annual Meeting on November 16 through 20, 2025, in Portland, Oregon.

Our practitioners will give seven presentations, present five posters, and chair one session. Visit the Geosyntec team at booth 26 to learn more about toxicology, ecological risk assessment, and emerging contaminants.

SETAC is a global, not-for-profit professional organization dedicated to advancing environmental science and management through interdisciplinary collaboration, education, and development of sustainable solutions to environmental challenges.

More Information About Toxicology and Emerging Contaminants

Learn more about the Society of Environmental Toxicology and Chemistry.
Learn more about the SETAC Annual Meeting.
To get in contact with Geosyntec practitioners, click on their names below.
For consultation regarding toxicology and ecological risk assessment, risk communication, and emerging contaminants, reach out to Jason Conder at JConder@Geosyntec.com.

Geosyntec’s Toxicology Experts at the Conference

Presentations

Microplastics Aquatic Life Criteria Review and Development for Regulatory Decision Making
Geosyntec Speaker: Rachel Zajac-Fay
Geosyntec Authors: Zach Pandelides, PhD; Jason Conder, PhD, IBERAD; and Elizabeth Nichols
Date/Time: Monday, November 17, at 11:40 a.m. PT

Bioaccumulation and Risks Associated with PFAS in Bivalves at AFFF Sites
Geosyntec Speaker: Zach Pandelides
Geosyntec Authors: Jennifer Arblaster, Elizabeth Nichols, and Jason Conder
Date/Time: Monday, November 17, at 1:50 p.m. PT

Derivation of PFAS Mammalian Biomagnification Factors for Predicting the Dietary Exposure of Predators That Eat Small Mammals
Geosyntec Speaker: Jason Conder
Geosyntec Authors: Paige Leitman, PhD, IBERAD, and Jean Zodrow, PhD
Date/Time: Tuesday, November 18, at 10:00 a.m. PT

Reeling in Success: Declining Pesticides in Shiner Surfperch in the Lauritzen Channel Since the 1997 Remedy
Geosyntec Speaker: Wendy Hovel, PhD
Geosyntec Authors: Jason Conder and Brian Hitchens, PG, CHG, RG
Date/Time: Wednesday, November 19, at 1:30 p.m. PT

Demonstration of a Commercially Available Peeper Passive Sampler for PFAS in Sediment
Geosyntec Speaker: Rachel Zajac-Fay
Geosyntec Authors: Jason Conder and Elizabeth Nichols
SiREM Author: Brent Pautler, PhD
Date/Time: Wednesday, November 19, at 2:10 p.m. PT

Contribution of Previously Unidentified Non-Arclor PCB Congeners to Sediment Impacts
Geosyntec Speaker: James Peale, RG, LHG
Date/Time: Wednesday, November 19, at 2:10 p.m. PT

Monte Carlo Modeling to Assess Variability in Food Web Models for PFAS
Geosyntec Speaker: Jean Zodrow
Geosyntec Authors: Jason Conder, Jennifer Arblaster, Elizabeth Nichols, Zach Pandelides, and Paige Leitman.
Date/Time: Thursday, November 20, at 11:40 a.m. PT

Posters

Development of a Lead Background Concentration at the Westside Lead Superfund Site
Geosyntec Speaker: Ankita Bhattacharya, PhD
Geosyntec Authors: Axel Berky, PhD, and Lauren Wellborn, PE

Integrating CO? Dynamics and Monitoring Tools to Understand Carbonate Mineral Behavior in Mine-Influenced Waters
Geosyntec Speaker: Marianne Batchelder
Geosyntec Authors: Gephen Sadove, Kevin Dufresne, PEng, and Karen Bechard, QPRA

Field Logistics for Passive Sampler (PFASsive) Deployment and Retrieval at Freshwater and Marine Department of Defense Sites
Geosyntec Speaker: Elizabeth Nichols
Geosyntec Authors: Rachel Zajac-Fay and Jason Conder
SiREM Author: Brent Pautler

Kinetic Uptake Factors of 15 PFAS in a Marine Benthic Polychaete
Geosyntec Speaker: Zach Pandelides
Geosyntec Authors: Jennifer Arblaster and Jason Conder

Ecotoxicity and Uptake of AFFF-Relevant PFAS to Pelagic and Epibenthic Marine Species
Geosyntec Speaker: Zach Pandelides
Geosyntec Speaker: Jennifer Arblaster and Jason Conder

Sessions

Risk Communication: The Essence of Science Solutions
Geosyntec Cochair: Rachel Zajac-Fay
Date/Time: Tuesday, November 18, at 10:00 a.m. PT