Where the Planning Board finds that, because
of special circumstances of a particular site, extraordinary difficulties
may result from strict compliance with these regulations, it may adjust
the regulations so that substantial justice may be done and the public
interest secured, provided that any such adjustment will not have
the effect of nullifying the intent and purpose of these regulations.
In granting any adjustment, the Planning Board shall attach such conditions
as are, in its judgment, necessary to secure substantially the objectives
of the regulations so adjusted.