Earth, sand dikes, or enclosures filled with the prescribed thickness of at least 3 feet of earth or sand shall be acceptable artificial barricades. Natural barricades such as hills or timber of sufficient density that the surrounding exposures requiring protection cannot be seen from the "donor" when the trees are bare of leaves shall also be acceptable.
N.H. Admin. Code § Saf-C 1639.04
#2220, eff 12-31-82; ss by #2837, eff 8-27-84; ss by #4584, eff 3-3-89; ss by #5996, INTERIM, eff 3-3-95, EXPIRES, 7-1-95; ss by #6054, eff 7-1-95, EXPIRED: 7-1-03
New. #8116, INTERIM, eff 7-14-04, EXPIRES: 1-10-05; ss by #8231, eff 12-20-04