Plastic Pollution Workgroup
The Plastic Pollution Workgroup seeks to reduce the environmental presence and impact of plastic pollution.
Meetings
No upcoming meetings.
Plastic Pollution Workgroup (PPoW) Quarterly Meeting - Fall 2026
Plastic Pollution Action Team Meeting - April 2026
Plastic Pollution Action Team Fall Meeting
About
The Plastic Pollution Action Team (PPAT) seeks to reduce the presence and impacts of plastic pollution on the Chesapeake Bay and its watershed. It was first established as an Action Team though a charge from the Management Board [PDF, 77KB] in response to a presentation on a microplastics workshop. The PPAT oversees research to determine the effects that microplastics have on the Chesapeake Bay ecosystem. This is accomplished through the following actions:
- Providing oversight to the development of preliminary ecological risk assessments (ERAs) of microplastics for one or more subwatersheds to the Chesapeake Bay;
- Using the results of the preliminary ERAs to develop a strategy that identifies and prioritizes gaps in information concerning the effects of microplastics pollution on the Chesapeake Bay ecosystem, highlighting future research questions that need to be answered;
- Present results from ERAs to the Management Board in order to guide future action on addressing plastic pollution; and
- Monitoring policy advances at the state and federal level that could potentially impact, advance or complement this work to inform the science strategy and to identify potential policy or management options that could be utilized for source reduction strategies.
Publications
Microplastic Source Tracking: Preliminary Investigation Data Report
Publication date:This preliminary investigation was designed to determine likely sources for microplastics related to land use by collecting surface water samples conveyed by several land use types in the tidal Potomac River watershed.
View document [PDF, 3.1 MB] Microplastic Source Tracking: Preliminary Investigation Data Report
Framework for Monitoring Plastic Pollution in the Chesapeake Bay
Publication date:This report includes recommendations for plastic pollution monitoring strategies throughout the Chesapeake Bay and its watershed.
View document [PDF, 6.6 MB] Framework for Monitoring Plastic Pollution in the Chesapeake Bay
Conceptual Model for an Ecological Risk Assessment for Microplastics on Striped Bass in the Potomac River Estuary
Publication date:This preliminary conceptual ecological risk assessment model was designed to identify pathways, sources, effects and unknowns related to microplastics in the tidal portion of the Potomac River.
Microplastic Monitoring & Science Strategy for the Chesapeake Bay
Publication date:This strategy presents a starting point to address microplastics across the Chesapeake Bay by engaging in research, monitoring and policy development.
View document [PDF, 3.9 MB] Microplastic Monitoring & Science Strategy for the Chesapeake Bay
Uniform Size Classification and Concentration Unit Terminology for Microplastics
Publication date:This document describes and recommends a uniform size classification and concentration unit terminology for plastics, to be applied to the parallel effort to develop an environmental risk assessment framework and eventual monitoring plan for environmental plastics in the tidal Potomac River.
Our Members
- Tish Robertson (Chair)
Virginia Department of Environmental Quality tlrobertson@deq.virginia.gov - Kelly Somers (Vice Chair)
U.S. Environmental Protection Agency (EPA) Somers.Kelly@epa.gov - Matt Robinson (Coordinator)
U.S. Environmental Protection Agency (EPA) robinson.matthew@epa.gov - Erin Sonnenburg (Staffer)
Chesapeake Research Consortium Sonnenburg.Erin@epa.gov - Barbara Balestra
American University balestra@american.edu - Bob Murphy
Tetra Tech Bob.Murphy@tetratech.com - Christine Knauss
University of Maryland Center for Environmental Science cknauss@umces.edu - Mark Trice
Maryland Department of Natural Resources mtrice@dnr.state.md.us - Martin Gary
New York State Department of Environmental Conservation Martin.Gary@dec.ny.gov - Meredith Seeley
Virginia Institute of Marine Science meseeley@vims.edu - Josh Lookenbill
Pennsylvania Department of Environmental Protection mlookenbil@pa.gov - Phong Trieu
Metropolitan Washington Council of Governments ptrieu@mwcog.org - Renee Thompson
Interstate Commission on the Potomac River Basin rthompson@icprb.org - Will Isenberg
VA Coastal Zone Management william.isenberg@deq.virginia.gov - Kelly Somers
U.S. Environmental Protection Agency (EPA) Somers.Kelly@epa.gov - Kelly Doordan
Trash Free Maryland kelly@trashfreemaryland.org - Beth Polidoro
University of Maryland Center for Environmental Science bpolidoro@umces.edu - Julia Wakeling
District of Columbia Department of Energy & Environment julia.wakeling@dc.gov - Nathan Bailey
Delaware Department of Natural Resources and Environmental Control nathan.bailey@delaware.gov