Va. Code § 3.2-3935
As used in this article, unless the context requires otherwise:
"Acceptable release rate" means a measured release rate not to exceed 4.0 micrograms per square centimeter per day at steady state conditions as determined in accordance with a U.S. Environmental Protection Agency (EPA) testing procedure as outlined in the EPA data call-in notice of July 29, 1986, on tributyltin in antifoulant paints under the Federal Insecticide, Fungicide and Rodenticide Act, (7 U.S.C. § 136 et seq.); or a lower release rate if adopted by the Board as necessary to protect health or the environment.
"Commercial boat yard" means any facility that engages for hire in the construction, storage, maintenance, repair or refurbishing of vessels (other than seaplanes) or any licensed independent marine maintenance contractor who engages in such activities.
"Marine antifoulant paint" means any compound, coating, paint or treatment applied or used for the purpose of controlling freshwater or marine fouling organisms on vessels.
"Tributyltin compounds" means any compound having three normal butyl groups attached to a tin atom and with or without an anion such as chloride, fluoride or oxide.
"Vessel" means every description of watercraft, other than a seaplane, used or capable of being used as a means of transportation on the water, whether self-propelled or otherwise, and includes barges and tugs.
Va. Code § 3.2-3935