“Minimally stocked” means having sound, thrifty trees distributed over the growing area, excluding rocky areas, meadows and bodies of water, in which:
1. There are 250 trees per acre, at least 6 inches in height, but less than 4 inches d.b.h.;
2. There are 150 trees per acre, 4 to 6 inches d.b.h.;
3. There are 75 trees per acre, 8 to 10 inches d.b.h.;
4. There are 40 trees per acre, 12 inches d.b.h. or larger; or
5. Any other minimum stocking levels of the area as set forth in a logging plan that were approved by the State Forester Firewarden are satisfied.