Any proposal for the development of a property shall indicate the
grading by cross sections through the property at critical locations,
indicating existing and proposed grades and noting percentages of
slopes. For retaining walls, working drawings and specifications shall
be required, showing foundations, cross sections, reinforcing, drainage
and soil conditions below and behind the wall. The Zoning Officer
shall not approve any development proposal until he is satisfied that
the proposed grading will not exceed the requirements of this section.