a. Any building requiring
space
be located at such an elevation that a sloping
shall be maintained to cause the flow of water to run away from the walls of the structures thereon. The balance of
spaces shall be graded and adequate drainage provided where necessary to deflect proper drainage of surface waters from the said
.
b. When a new building is constructed on a vacant lot between two existing buildings or adjacent to an existing building, the existing established
be used in determining the
around the new building and the
around the new building shall be graded in such a manner as to meet existing grades.
c. The final
be approved by the
.