4 Va. Admin. Code § 25-40-1150
Compressed-air receivers shall have inspection openings which, when the tanks are over 36 inches in diameter, shall be manholes.
§§ 45.1-161.3, 45.1-161.294 and 45.1-161.305 of the Code of Virginia.
Derived from VR480-05-1.2 § 8.6, eff. July 19, 1989.