Modification of topographic features on Tier I sites
The topographic features, including natural topography and topsoil, existing at the time of designation of a Special Natural Area District may be modified by the City Planning Commission, provided that the Commission finds that:
(a) development, enlargement and site alteration is not feasible without such modification, or that the requested modification will permit a development, enlargement or site alteration that satisfies the purposes of this Chapter;
(b) such modification, including any removal of topsoil, will not disturb the drainage pattern and soil conditions in the area;
(c) such modification of topography has minimal impact on the existing topographic features of the surrounding area and blends harmoniously with it;
(d) such modification is the least modification required to achieve the purpose for which it is granted; and
(e) the development, enlargement or site alteration takes advantage of the natural characteristics of the site.
Where permits are required from a City agency, the Commission shall request a report from such agency, and the provisions of Section 105-93 (Inter-agency Coordination) shall apply.