“Assist system” means a type of stage II system which uses a vacuum pump to assist the transfer of displaced vapors from a motor vehicle fuel tank into a gasoline storage tank at a gasoline dispensing facility.

Source. (See Revision Note #1 and Revision Note #2 at chapter heading for Env-Or 500) #10229, eff 11-17-12; ss by #13458, eff 10-7-22