Download PDF
November 8, 2019

Comments on Proposed Revisions to the CBI Substantiation Requirements Due December 9

Lynn L. Bergeson Carla N. Hutton

On November 8, 2019, the U.S. Environmental Protection Agency (EPA) published in the Federal Register a supplemental notice of proposed rulemaking regarding revisions to the confidential business information (CBI) substantiation requirements under the Toxic Substances Control Act (TSCA).  84 Fed. Reg. 60363.  EPA states that in response to a recent federal circuit court decision, it is proposing revisions to existing and proposed substantiation requirements for certain CBI claims.  Specifically, EPA is proposing two additional questions that manufacturers and processors would be required to answer to substantiate certain CBI claims for specific chemical identities and is proposing procedures for manufacturers and processors to use in amending certain previously submitted substantiations to include responses to the additional questions.  Comments on the supplemental notice are due December 9, 2019.

EPA notes that these proposed revisions supplement the proposed rule issued in the April 23, 2019, Federal Register and would amend the TSCA Inventory Notification (Active-Inactive) Requirements rule promulgated on August 11, 2017.  More information on the proposed rule is available in our April 11, 2019, memorandum, “EPA Announces Proposed Procedures for Review of CBI Claims for the Identity of Chemicals on the TSCA Inventory,” and more information on the final rule is available in our June 26, 2017, memorandum, “EPA Issues Final TSCA Framework Rules.”