(A) The restrictions on development on sloped areas in this subchapter refer to existing (pre-development) site conditions. Slopes shall be determined by dividing the horizontal run of the slope into the vertical rise of the same slope and converting the result into a percentage value.
(B) Steepness of a slope shall be measured from the points with the highest and lowest elevation between slope breaks. The Planning Director in consultation with NRCS representatives shall make the final determination of what constitutes a slope break.
(LDC § 4.7.3)