10.930 Definitions.
When used in Sections 10.929 to 10.933, the following terms shall have the meanings herein ascribed:
Slope. The natural earth’s surface expressed as a ratio of the change, i.e. the delta (∆) in horizontal (H) distance to the change (∆) in vertical (V) distance. Slopes are expressed as a percentage. Slope refers to a given rise in elevation over a given run in distance, multiplied by 100, i.e. (∆V ÷ ∆H) 100 = Slope. For example, a 40-foot rise in elevation over a distance of 100 feet is a 40% Slope, i.e. (40’ ÷ 100’) 100 = 40% Slope.
Slope Analysis. A topographical contour map to scale of the lot or parcel which depicts the slope, and which satisfies the following requirements:
(1) Contours are depicted at no greater than ten-foot (10’) intervals and the map differentiates between areas of a lot or parcel with Slopes of: (a) between fifteen percent (15%) and thirty-five percent (35%); and (b) Slopes greater than thirty-five percent (35%).
(2) Slopes shall, as near as practical, be measured perpendicular to the map’s contour lines.
(3) Land or natural features comprising less than two hundred (200) horizontal square feet with Slopes greater than of fifteen percent (15%) shall not be included in the Slope Analysis.
(4) Man-made features including, but not limited to, ditches, canals, existing retaining walls, and existing buildings, which necessarily will be relocated, placed underground, or otherwise removed as part of future urban development, shall not be included in the Slope Analysis.
(5) Portions of lots or parcels which are undevelopable, including (but not limited to) jurisdictional wetlands and riparian setback areas, shall not be included in the Slope Analysis.