Environmental toxicologist working on microplastics, PFAS, regulatory science, and open environmental data tools.
I develop risk assessment methods and open science tools that help governments, researchers, and communities understand emerging contaminants and make decisions under uncertainty.
I currently serve as a Staff Toxicologist Specialist at the California Office of Environmental Health Hazard Assessment (OEHHA), where I am assessing the human health effects of microplastics in drinking and bottled water to support the implementation of California Senate Bill 1147.
In addition to my duties at OEHHA, I serve as an editor for Cambridge Prisms: Plastics, a board member of the Moore Institute for Plastic Pollution Research, and one of the founders of Plastiverse.org — a community hub for plastic pollution research resources.
I am committed to making data and science open to the extent possible, which is why this entire website is open-source and may be freely copied by anyone who so wishes.
Some things I’m known for:
- Helped develop California’s regulatory definition of microplastics in drinking water (SB 1422).
- Helped develop California’s microplastics drinking water monitoring and human health risk assessment frameworks — the first in the world.
- Developed health-based and ecological risk frameworks for microplastics used by California’s EPA.
- Co-founded Plastiverse as a community hub for plastic pollution research.
- Built or contributed to open data tools including ToMEx 2.0, pSSD++, and PFAS data tools.
- Communicated microplastics and emerging-contaminant science through public talks, media appearances, podcasts, and community-facing events.
Outside of science, I can be found rock climbing, surfing, mountain biking, dancing, playing music, or DJing. I’m a Wyoming native living in West Sacramento, California [unceded Patwin Indian territory].