Bill > S4397

This bill, titled the "Sound Science Act of 2026," amends the Toxic Substances Control Act (TSCA) to enhance the transparency and scientific rigor of regulatory processes. Key provisions include requiring that testing methodologies used under TSCA be "technically feasible" and consider the intended purposes of chemical substances, and that risk evaluations by the Environmental Protection Agency (EPA) Administrator must focus on exposures more likely than not to cause unreasonable risk, consider sentinel and aggregate exposures only when necessary for clarity, and incorporate information from other federal agencies regarding exposure limits or thresholds. The bill also mandates that the EPA Administrator consider existing occupational safety and health standards when selecting regulatory requirements for chemical substances, and that risk evaluations be subject to a more robust interagency review process, including a minimum of 30 days for federal departments and agencies to provide feedback on draft evaluations. Furthermore, it strengthens scientific standards by requiring the EPA Administrator to document the consistency of assessments with established scientific standards, consult with experts and other federal agencies on worker protection standards, and ensure that peer reviews of risk evaluations are conducted in-person for at least 30 days to thoroughly examine the underlying science and risk determinations.