Scope. This regulation does not limit the type and quantity of fuel for generators and their fuel storage located not less than 50 feet from the exterior of the sales or distribution facility. Generators using flammable or combustible liquid or gas fuels supplying power to ground-based sparkling devices sales or distribution facilities may not be located less than 20 feet from the exterior of the sales or distribution facility. Combustible and flammable liquid generator fuel may not: Exceed 5 gallons; or Be stored less than 20 feet from the exterior of a sales or distribution facility. Flammable gas generator fuel may not: Exceed 20 pounds; or Be stored less than 20 feet from the exterior of a sales or distribution facility.