; (v) has accessory facilities on which an antenna, sensor, camera, meteorological instrument, or other equipment is mounted; and (vi) is located on land that is— (I) in a remote or rural area; and (II) used for agricultural purposes or immediately adjacent to such land. (B) Exclusions The term covered tower does not include any structure that— (i) is adjacent to a house, barn, electric utility station, or other building; (ii) is within the curtilage of a farmstead or adjacent to another building or visible structure; (iii) supports electric utility transmission or distribution lines; (iv) is a wind-powered electrical generator with a rotor blade radius that exceeds 6 feet; (v) is a street light erected or maintained by a Federal, State, local, or tribal entity; (vi) is designed and constructed to resemble a tree or visible structure other than a tower; (vii) is an advertising billboard; (viii) is located within 100 feet from the centerline of the rail line on the right of way of a rail carrier over which service has not been discontinued, or within the boundaries of a rail yard; (ix) (I) is registered with the Federal Communications Commission under the Antenna Structure Registration program set forth under part 17 of title 47, Code of Federal Regulations; and (II) after being registered as described in subclause (I), is determined by the Administrator to pose no hazard to air navigation; or (x) has already mitigated any hazard to aviation safety in accordance with FAA guidance or as otherwise approved by the Administrator. (2) Other definitions The Administrator shall define such other terms as may be necessary to carry out this section. (e) Database The Administrator shall— (1) develop a database that contains the location and height of each covered tower that is not marked in accordance with this section, except that— (A) meteorological evaluation towers shall be marked and contained in the database; and (B) towers excepted under subsection (d)(1)(B)(viii) must be contained in the database