The Planning Board may waive any of the provisions contained herein
where, by reason of the exceptional shape of a specific pice of property,
or where, by reason of exceptional topographic or other conditions,
the strict application of this Part 2 would result in extreme practical
difficulties and undue hardship upon the owner of such property. Such
relief may only be granted without detriment to the public good and
without substantially impairing the intent and purposes of this Part
2.