AB 1691: Marine resources: copper-based antifouling paint: standards, studies, and best methods.

The bill aims to address the environmental impact of copper-based antifouling boat paint products. It requires a reevaluation of these products by the Department of Pesticide Regulation by January 1, 2029, to determine whether to retain, modify, or suspend existing standards. The bill also mandates active studies on the effectiveness of low-leach-rate paint and elevated copper concentrations in saltwater areas by June 1, 2028. These studies will be conducted by the Department of Pesticide Regulation in collaboration with other state agencies. The findings of these studies will inform the development of best methods to address elevated copper concentrations in saltwater areas, which will be posted on the California Environmental Protection Agency's website by January 1, 2029.