Existing vapor control system
Existing vapor control system means a vapor control system that satisfies the requirements of 33 CFR part 154, subpart E as certified by a certifying entity, or a tank barge cleaning facility vapor control system that meets the safety Standards of Navigation and Vessel Inspection Circular No. 196 as certified by a certifying entity or approved by the U.S. Coast Guard, and that began operating prior to August 15, 2013.