Zone district boundary lines are intended to follow the centerline of streets or interior waterways and the dune line as established by Ordinance No. 442 adopted October 7, 1970. Where district boundaries are so indicated that they are approximately parallel to said lines, such district boundaries shall be construed as being parallel thereto and at such distances there from as indicated on the Zoning Map. If no distance is given, such dimensions shall be determined by use of graphic scale shown on said map.

Where boundary lines are not fixed by dimension and where they do not scale more than ten (10) feet distance from a plat or Tax Map lot line, such lot line shall be construed to be the boundary line.

Where district boundary lines follow an exterior waterway or water body, the boundary line shall be deemed to be located at the limit of the jurisdiction of the Borough unless otherwise specified.

Where physical or other features existing on the ground are at variance with those shown on the Zoning Map or in other circumstance not covered by subsection 27-4.3a, b and c above, the Board shall interpret the district boundary.

Where the districts containing lots shown on the tax map adjoin barrier sand dunes, either artificial or natural; these barrier sand dunes being located immediately west of the beach area, the districts and lots therein shall be bounded by an imaginary line along the westerly side of the sand dunes.