4 Va. Admin. Code § 25-40-400
Rims of open pits shall be stripped back of loose, unconsolidated material and trees for at least 10 feet, and unconsolidated material beyond 10 feet shall be sloped to the angle of repose. Areas that were developed prior to the effective date of this chapter may be barricaded and posted with warning signs in lieu of meeting this requirement.
§§ 45.1-161.3, 45.1-161.294 and 45.1-161.305 of the Code of Virginia.
Derived from VR480-05-1.2 § 3.2, eff. July 19, 1989; amended, Virginia Register Volume 14, Issue 17, eff. July 1, 1998.