Project Overview: Cardno ChemRisk scientists were retained to conceive, manage and provide technical oversight of a study evaluating the freshwater fate and transport of microplastics on behalf of the European Tyre & Rubber Manufacturers’ Association (ETMRA).

Our Approach: The project consisted of a literature review, integrated modeling methodology development, and the coordination of an integrated modeling effort and sensitivity analysis. The modeling effort characterized tire and road wear particles (TRWP) transport in the Seine and Scheldt watersheds, and represents one of the first microplastic freshwater mass balance assessments.

Our Value: The model development and sensitivity analysis demonstrated the use of mass flow and balance models to support microplastics product sustainability assessments. The studies provided one of the first examples of a linked release and environmental distribution model at a watershed scale and were published in peer reviewed scientific journal articles.