Categories October Surprise 2024 TCEQ – 40 CFR Part 60, Subpart OOO; Flowchart Post author By Post date October 1, 2025 Last Modified: 05/02/2019 From 40 CFR Part 60, Subpart OOO, Amended 04/28/2009 These flowcharts are for use by sources subject to the Federal Operating Permit Program and are subject to change.