In this chapter, the following terms have the meanings indicated. Terms Defined. “Bulk gasoline plant” means a gasoline storage and distribution facility with a maximum daily throughput of 20,000 gallons (75,500 liters) or less which receives gasoline from bulk terminals, stores it in tanks, then dispenses the gasoline via trucks to local farms, businesses, and gasoline dispensing facilities. “Bulk gasoline terminal” means a gasoline storage facility with a minimum daily throughput greater than 20,000 gallons (75,500 liters) which receives gasoline by pipeline, ship, or barge and delivers gasoline to bulk gasoline plants or to commercial or retail accounts by tank truck. “External floating roof” means a double deck or a pontoon single deck cover in an open top tank which rests upon, and is supported by, the liquid being contained. “Gasoline” means a petroleum distillate or alcohol, or their mixtures, having a true vapor pressure within the range of 1.5 to 11 pounds per square inch absolute (psia) (10.3 to 75.6 kilonewtons/square meter) that is used as fuel for internal combustion engines or aircraft. “Gasoline leak” means a reading equal to or greater than 100 percent of the lower explosive limit measured as propane at a distance of 1 inch from any point on the perimeter of a potential leak source. “Internal floating roof” means a double deck or a pontoon single deck cover which rests upon and is supported by the liquid being contained in a closed top tank. “Marine vessel” means any tank ship or barge that transports volatile organic compounds (VOCs) in bulk as cargo. “Motor vehicle” means a vehicle registered with the Maryland Motor Vehicle Administration or the equivalent agency of any other state. “Pipeline breakout station” means a facility that receives gasoline from a main pipeline and distributes the gasoline by smaller spur pipelines to bulk gasoline terminals. “Primary seal” means a continuous seal in a storage tank that extends from a floating roof to the tank wall to prevent the escape of vapors into the atmosphere. “Secondary seal” means a continuous seal in a storage tank that extends from the floating roof to the tank wall covering the entire primary seal. “Tank truck” means a truck or trailer equipped with storage tanks and used for the transport of gasoline or volatile organic compounds (VOC) from sources of supply to stationary storage tanks. “Vapor balance system” means coaxial or dual piping that creates a closed system between a tank truck and a stationary storage tank and contains the vapors during the transfer of gasoline. “Vapor control system” means any piping, hoses, equipment, and devices that collect and process gasoline or VOC vapor, using a vapor processing system. “Vapor processing system” means any equipment used for recovering or oxidizing VOC vapors.