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No more than seven (7) units shall be permitted on any one net acre through a density transfer in the H-P-D Zone. The density for property within an H-P-D Zone shall depend on the average slope of the natural terrain of the area within the proposed development and a consideration of all requirements of this Code.
“Average slope” of a parcel or any portion thereof shall be computed by applying the formula:
S = 0.00229 I L
to the natural slope of the land before any grading is commenced, as determined from a topographic map conforming to national mapping standards and having a scale not less than one (1") inch equals two hundred (200') feet and a contour interval not less than five (5') feet. The formula letters represent the following:
S = Average percent slope;
I = Contour interval, in feet;
L = Summation of length of contours, in feet; and
A = Area in acres of the parcel being considered.
The density for property within this zone shall be computed in accordance with the following scale:
Average Percent of Slopes
Maximum Density (D/U per Gross Acre)
10 – 14.9%
15 – 19.9%
20 – 24.9%
25 – 29.9%
30 – 34.9%
35 and over
For certain unique properties within this zone, where the average slope percentage is less than ten (10%) percent, the Council may allow the maximum density of four (4.0) units per gross acre for the entire development.
All parcels of record which have been recorded prior to September 9, 1971, and which subsequently are placed in the H-P-D Zone, shall be subject to all the provisions of this article except, when such parcels are located in natural slope areas of twenty-four and nine-tenths (24.9%) percent and above, all parcels shall be permitted at least one dwelling unit.
(§ 1, Ord. 224-NS, eff. September 9, 1971, renumbered by § II, Ord. 383-NS, eff. July 12, 1973, and amended by § 7, Ord. 899-NS, eff. October 22, 1985)