SAN LUIS OBISPO COUNTY AIR POLLUTION CONTROL DISTRICT
RULE 422 - REFINERY PROCESS TURNAROUNDS
A. A person shall not vent organic compounds to the atmosphere during the depressurization or the vessel purging steps of a refinery process turnaround.
B. Compliance with this Rule shall be accomplished by venting all uncondensed organic gases to a fuel gas system or to a flare, or by other methods which the Air Pollution Control Officer has determined will prevent said gases from being emitted to the atmosphere.