Where, due to topography or other conditions especially
affecting the land being subdivided, a literal enforcement of this
chapter would result in practical difficulty, unnecessary hardship
or a conflict with other requirements in such subdivision deemed to
be of greater benefit or importance, the Planning Board may vary the
application of these regulations in harmony with their general purpose
and intent. The approval of any such modification shall be deemed
to be included in the approval by the Planning Board of the subdivision
plat, and the Planning Board shall state in its minutes its reasons
for granting any such modifications.