4 Va. Admin. Code § 25-40-1050
Boreholes large enough to create a hazard shall be covered or guarded.
§§ 45.1-161.3, 45.1-161.294 and 45.1-161.305 of the Code of Virginia.
Derived from VR480-05-1.2 § 7.12, eff. July 19, 1989.