Boundary lines. The zone boundary lines are intended
generally to follow straight lines, existing lot lines, center line
street railroad rights-of-way and waterways and development boundaries
as indicated on the Zoning Map; but where a boundary line does not
coincide with such line, its location is indicated on said map by
means of figures expressing distance in feet from a street line. In
case of uncertainty as to the true location of any zone boundary line,
the determination thereof shall lie with the Joint Land Use Board
of the Borough of Dumont.