Emission Limits and Compliance Requirements for Continuous Process Vents

[As required in § 63.11496, you must comply with the requirements for continuous process vents as shown in the following table] For . . . You must . . . Except . . . 1. Each continuous process vent with a TRE ≤1.0 a. Reduce emissions of total organic HAP by ≥95 percent by weight (≥85 percent by weight for periods of startup or shutdown) or to ≤20 ppmv by routing emissions through a closed vent system to any combination of control devices (except a flare) in accordance with the requirements of § 63.982(c) and the requirements referenced therein; or i. Compliance may be based on either total organic HAP or TOC; and ii. As specified in § 63.11496(g). b. Reduce emissions of total organic HAP by routing all emissions through a closed-vent system to a flare (except that a flare may not be used to control halogenated vent streams) in accordance with the requirements of § 63.982(b) and the requirements referenced therein, or i. Not applicable. c. Comply with the alternative standard specified in § 63.2505 and the requirements referenced therein i. As specified in § 63.11496(e). 2. Halogenated vent stream that is controlled through combustion a. Comply with the requirements for halogen scrubbers in § 63.11496(d). 3. Each continuous process vent with a TRE >1.0 but ≤4.0 a. Comply with the requirements of § 63.982(e) and the requirements specified therein if a recovery device, as defined in § 63.11502, is used to maintain a TRE >1.0 but ≤4.0. [77 FR 75760, Dec. 21, 2012, as amended at 91 FR 16534, Apr. 1, 2026]