Document 4aEaBEveqm6r6Nn2e6aJrQ0yx

Additional Information Requested by EPA in December 20, 2024 Letter & 40 CFR 63.6(i)(10) Each of the requested items is provided for Projects #1 and #2. Process Vent Streams In Ethylene Oxide Service - Information for Projects #1 and #2 -- Installation of water scrubbers and Purge Glycol Reactors. Identify each affected source covered by the extension: Process Vent Stream Alcohol Recovery Column Vent Scrubber Vent -- EPN 583 Condensate Pot C-1219 Vent -- EPN 781 TEA Column Jet Vent -- EPN 294 South Jet Condensate Tank Vent Plant Glycol Ethers Glycol Ethers Ethanolamines Ethanolamines Specify the termination date of the extension. The termination date of the extension will be July 15, 2027, for the installation of the vent scrubbers and their Purge Glycol Reactor systems. The termination date of the extension will be December 12, 2027, for the Notification of Compliance Status Report and other associated requirements as detailed below. Specify the dates by which steps toward compliance are to be taken, if appropriate As noted above, construction is expected to commence on this project by August 1, 2026, with the goal of completing construction by June 1, 2027. A performance test on each scrubber along with establishment of operating parameters for each scrubber for continuous monitoring will be conducted after the start-up date. Specify other applicable requirements to which the compliance extension applies (e.g., performance tests). We also propose extensions to the following items related to the start-up of the water scrubbers and the testing, monitoring, recordkeeping, and reporting requirements: Page 6 Sierra Club FOIA 2025-EPA-04883 ED_018388_00000034-00006 SC_EVERSPLIT0005206