(A) Erodible slopes. The following standards shall apply to sloped portions of any lot or property where the sloped area measures at least 50 feet in any direction. Such areas are considered areas of steep slopes, or “erodible slopes”, and the following standards shall apply.
(1) No more than 40% of the erodible slope shall be developed and/or re-graded or stripped of vegetation from areas where slope exceeds 12%.
(2) No more than 30% of the erodible slope shall be developed and/or re-graded or stripped of vegetation from areas where the slope exceeds 20%.
(3) No more than 15% of the erodible slope shall be developed and/or re-graded or stripped of vegetation from areas where the slope exceeds 30%.
(4) All such areas shall remain as permanent open space to every extent possible.
(5) Erodible slopes may be used to provide access to non-sloped areas, provided that no alternate means or routes of access are feasible.
(B) Soil erosion and sedimentation control plan.
(1) In order to prevent soil erosion and sedimentation, a soil erosion and sedimentation control plan shall be required as a part of an application for a zoning certificate whenever a development in any district will involve clearing, grading, transporting or other form of disturbing land by the movement of earth, provided that any one of the following descriptions applies to the said movement of land:
(a) Excavation, fill or any combination thereof will exceed 500 cubic yards;
(b) Fill will exceed three feet in vertical depth at its deepest point as measured from the natural ground surface;
(c) Excavation will exceed four feet in vertical depth at its deepest point (excluding foundations) as measured from the natural ground surface;
(d) Excavation, fill or any combination thereof will exceed an area of 5,000 square feet; and
(e) Plant and/or tree cover is to be removed from an area exceeding 5,000 square feet on any parcel of land.
(2) Whenever any land located in a stream, stream channel or body of water is disturbed, a soil erosion and sedimentation control plan shall be provided with the application for a zoning certificate.
(C) Additional requirements. All measures necessary to minimize soil erosion and to control sedimentation in disturbed land shall be provided, including minimize velocities of water runoff, maximize protection of disturbed areas from stormwater runoff and retain sedimentation within the development sites as early as possible following disturbances.
(Ord. 1999-03, passed 3- -1999; Ord. 2013-04, passed 2-4-2013)