As used in this chapter, unless the context requires a different meaning: “Battlefield preservation organization” means a private nonprofit organization whose primary purpose is the preservation of one or more historical battlefields, including a battlefield property as defined in § 10.1-2200. “Field investigation” means the study of the traces of human culture at any site by means of surveying, sampling, excavating, or removing surface or subsurface material, or going on a site with that intent. “Field supervisor” means a person who is physically present at least 70 percent of the time during a field investigation, exploration, or recovery operation involving the removal, destruction, or disturbance of any object of antiquity and who directly oversees such field investigation, exploration, or recovery operation. “Object of antiquity” means any relic, artifact, remain, including human skeletal remains, specimen, or other archaeological article that may be found on, in, or below the surface of the earth that has historic, scientific, archaeologic, or educational value. “Person” means any natural individual, partnership, association, corporation, or other legal entity. “Site” means a geographical area on dry land that contains any evidence of human activity that is or may be the source of important historic, scientific, archaeologic, or educational data or objects. “State archaeological site” means an area designated by the Department in which it is reasonable to expect to find objects of antiquity. “State archaeological zone” means an interrelated grouping of state archaeological sites. “State archaeologist” means the individual designated pursuant to § 10.1-2301. “State-controlled land” means any land owned by the Commonwealth or under the primary administrative jurisdiction of any state agency. “State agency” shall not mean any locality or any board or authority organized under state law to perform local or regional functions. “State-controlled land” includes state parks, state wildlife areas, state recreation areas, highway rights-of-way, and state-owned easements.