(1) "Alternative fuel source," as used in this chapter, includes: Propane, compressed natural gas, liquid petroleum gas, alcohol, or any chemically similar gas, but does not include gasoline or diesel fuel.

(2) "National Fire Protection Association" means the nationally recognized organization dedicated to fire safety and development of standards for fire protection and safeguarding of hazards, whose headquarters are located at Batterymarch Park, Quincy, MA 02269.