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Microplastic Pollution in California

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Microplastic Pollution in California Microplastic APRIL 2021 Pollution in California NEW REPORT SHARES A PRECAUTIONARY FRAMEWORK AND SCIENTIFIC GUIDANCE TO ASSESS AND ADDRESS RISK and may lead to adverse effects in organisms Background and humans. • Manage and assess microplastic pollution risk using a particulate approach, rather than a In 2018, the California Ocean Protection Council toxicant approach, until California-specific (OPC) was tasked by state legislation (S.B. 1263) data are available and the chemical effects of to develop a Statewide Microplastics Strategy, microplastics are fully understood. including the development of a risk assessment framework for microplastic pollution in California. • Focus future microplastic risk assessments, The Ocean Science Trust (OST) convened an OPC using the precautionary framework, on the Science Advisory Team (OPC SAT) Microplastic following high priority & most prevalent Working Group of interdisciplinary scientific experts components: to develop this framework and provide scientific • Particle Morphology: microfibers and guidance to assist the State in understanding the fragments risks microplastics pose to marine ecosystems and humans in California. • Polymer Types: microfibers and tire & road wear particles • Fate & Transport Pathways: stormwater Key Recommendations runoff (urban, agricultural), aerial deposition, and wastewater • Sources: unknown in California, but international literature suggests tire & • Use a precautionary approach to assess the road wear, laundry & textiles, and plastic risk of and manage microplastic pollution.This litter from aquaculture & fishing recommendation is based on current scientific • Priority Endpoints: microplastic understanding on microplastic persistence, lack internalization for benthic mollusks, large of feasible cleanup options, projected rate of crustaceans, and lower and upper trophic increased concentrations in the environment, level fish and evidence that microplastics contaminate KEY RECOMMENDATIONS CONTINUTED… CONTRIBUTORS Working Group Members • Apply the risk prioritization tool, proposed in the full report, that uses a weight-of-evidence approach to characterize Susanne Brander and rank risk associated with the highest priority and most Oregon State University (Co-Chair) prevalent components of microplastic pollution. Eunha Hoh San Diego State University • True source reduction of plastic materials may be the most (Co-Chair) effective precautionary strategy to reduce and prevent Kenneth Unice microplastic pollution, given the lack of feasible microplastic Cardno ChemRisk (Co-Chair) cleanup strategies. Anna-Marie Cook U.S. Environmental Protection • The top research need is an inventory of the top sources Agency (Retired) of macro- and micro- plastic loading in California, that investigates the contribution of agricultural sources relative Rusty Holleman University of California, Davis to urban and industrial runoff, as well as wastewater. Chelsea Rochman • Revisit this risk assessment framework in five (5) years, given University of Toronto how rapidly microplastics science is evolving, to assess if Julie Thayer effects data are then sufficient for a quantitative effects risk Farallon Institute assessment. Project Team For more information and the full report, please visit Dominique Kone https://www.oceansciencetrust.org/projects/ California Ocean Science Trust microplastics-risk-assessment/ Kiya Bibby California Ocean Science Trust Anthony Rogers California Ocean Science Trust ABOUT OCEAN SCIENCE TRUST Ocean Science Trust (OST) is a non-profit organization dedicated Policy Advisory Committee to accelerating progress towards a healthy and productive ocean future for California. Created by the California Ocean Resources Scott Coffin Stewardship Act of 2000 (CORSA), OST bridges the gap between California State Water Resources cutting-edge scientific research and sound ocean management. Control Board Evan Johnson ABOUT THE CALIFORNIA OCEAN PROTECTION COUNCIL CalRecycle The California Ocean Protection Council (OPC) is a cabinet-level Thomas Mumley state policy body within the California Natural Resources Agency. San Francisco Bay Regional Water Created by the California Ocean Protection Act of 2004 (COPA), Quality Control Board OPC advances the Governor’s priorities for coastal and ocean policy Wesley Smith and works to ensure healthy coastal and ocean ecosystems for California Office of Environmental current and future generations by advancing innovative, science- Health Hazard Assessment based policy and management, making strategic investments, and Holly Wyer catalyzing action through partnerships and collaboration. California Ocean Protection Council External Advisors FUNDING Diana Lin Funding was provided by the California Ocean Protection Council. San Francisco Estuary Institute Steve Weisberg Southern California Coastal Water Research Project.
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