In a recent government meeting, discussions centered on the environmental impact of tire-related chemicals, particularly six PPD, which has been linked to high lethality in coho salmon. The meeting highlighted the ongoing research efforts by the global tire industry, particularly through a Swiss-based organization that has been studying tire and road wear particles for years. While the U.S. leads in research on six PPD, coordination with international counterparts is emphasized.

The meeting also addressed the regulatory framework guiding the evaluation of safer alternatives to harmful chemicals. A representative detailed the rigorous California regulations that govern this process, noting that initial screenings of seven identified chemicals showed no negative impacts on salmonids, although further research is planned.

Concerns were raised about the broader presence of six PPD in other products beyond tires, with participants acknowledging a lack of comprehensive data on its prevalence in various rubber products.

Additionally, suggestions were made to improve the Environmental Protection Agency's (EPA) chemical review process. Recommendations included adopting a more reasonable approach to data defaults and enhancing communication between the EPA and chemical submitters to streamline the review timeline.

The meeting concluded with a consensus on the urgency of addressing the toxicity of six PPD, drawing parallels to the historical impact of DDT on eagle populations. Stakeholders were invited to submit further questions and materials for the record, indicating ongoing engagement in this critical environmental issue.