On March 17, 2023 (88 FR 16389), the Environmental Protection Agency (EPA) published a Notice in the Federal Register (FR) announcing the availability of and soliciting public comment on additional data received by EPA related to the proposed rule for Part 1: Chrysotile Asbestos; Regulations of Certain Conditions of Use under TSCA. These additional data pertain to chrysotile asbestos diaphragms used in the chlor-alkali industry and chrysotile asbestos-containing sheet gaskets used in chemical production and may be used by EPA in the development of the final rule, including EPA’s determination of what constitutes “as soon as practicable” with regard to the proposed chrysotile asbestos prohibition compliance dates for these uses. Comments must be received on or before April 17, 2023.

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EPA 03-17-2023 proposed rule TSCA asbestos data availability