(a) You must meet the emission limitations for each CISWI, including bypass stack or vent, specified in tables 4 through 7 to this subpart by January 10, 2025. The emission limitations apply at all times the unit is operating including and not limited to startup, shutdown, or malfunction.

(b) Units that do not use wet scrubbers must maintain opacity to less than or equal to the percent opacity (three 1-hour blocks consisting of ten 6-minute average opacity values) specified in table 4 to this subpart, as applicable.