Washington Revised Code Title 82. Excise Taxes § 82.38.065. Dyed special fuel use--Authorization, license required--Imposition of tax

A person may operate or maintain a licensed or required to be licensed motor vehicle with dyed special fuel in the fuel supply tank only if the use is authorized by the internal revenue code and the person is either the holder of a dyed special fuel user license or the use is exempt from the special fuel tax. A person may maintain dyed special fuel for a taxable use in bulk storage if the person is the holder of a dyed special fuel user license issued under this chapter.