The EPA will begin assessing the health and environmental risks of 6PPD, which studies have shown is lethal to salmon

The US Environmental Protection Agency has agreed to hear a petition by the Yurok, Port Gamble S’Klallam, and Puyallup Tribes calling for the agency to regulate the use of N-(1,3-dimethylbutyl)-N’-phenyl-p-phenylenediamine, known as 6PPD, in tires. The compound is linked to mass die-offs of coho salmon, which are central to the cultures, diets, and economies of these three tribes and important to other communities on the West Coast. In a response to the petition, the EPA says that, in the coming months, it will issue an advance notice of proposed rulemaking for 6PPD and begin gathering data to better understand the health and environmental risks associated with the chemical and a byproduct, 6PPD-quinone. The agency also plans to finalize a rule under the Toxic Substances Control Act (TSCA) that will require manufacturers and importers of 6PPD to report any unpublished health and safety studies on the compound. ....