The following planning and design standards
shall be complied with except where the Planning Board finds that
because of exceptional and unique conditions of topography, location,
shape, size, drainage or other physical features of the site, or because
of the special nature and character of the surrounding development,
the minimum standards specified herein would not reasonably protect
or provide for public health, safety or welfare. Any higher standard
required shall be reasonable and shall be limited to the minimum additional
improvements necessary to protect the public health, safety or welfare.