| 7. Property boundary. A natural buffer strip at least 50 |
feet wide must be maintained between any excavation and any |
property boundary. A natural buffer strip at least 25 feet wide |
must be maintained between any topsoil excavation and a property |
boundary. These distances may be reduced to not less than 10 |
feet with the written permission of the affected property owner |
or owners, except that the distance may not be reduced to less |
than 25 feet from the boundary of a cemetery or burial ground. |
The buffer strip between excavations owned by abutting owners may |
be eliminated with the abutter's written permission, provided the |
elimination of this buffer strip does not increase the runoff |
from either excavation across the property boundary. Any written |
permission to reduce a buffer must provide that it remains in |
effect until mining ceases and must be recorded in the registry |
of deeds. All property boundaries must be identified in the |
field by markings such as metal posts, stakes, flagging or blazed |
trees. The department may not grant a variance from the |
provisions of this subsection. |