On April 23, 2019, the U.S. Environmental Protection Agency (EPA) issued a proposed rule regarding its plan to review certain confidential business information (CBI) claims to protect the specific chemical identities of substances on the confidential portion of the Toxic Substances Control Act (TSCA) Inventory. 84 Fed. Reg. 16826. The CBI claims that would be reviewed under this plan are those that were asserted on Notice of Activity (NOA) Form A’s filed in accordance with the requirements in the Active-Inactive rule. Comments are due June 24, 2019. See the full memorandum for more information on the proposed rule.