8-7-55: DRAINAGE; DISPOSAL REQUIREMENTS:
All drainage facilities shall be designed to carry surface and subsurface waters to the nearest adequate street, storm drain, natural watercourse or other juncture, and shall be subject to the approval of the city engineer. Drainage areas shall conform to patterns established by the city engineer. Erosion of ground in the area of discharge shall be prevented by installation of nonerosive down drains or other devices.
Building pads shall have a drainage gradient of two percent (2%) toward approved drainage facilities, unless waived by the city engineer.
   (A)   Exception: The gradient from the building pad may be one percent (1%) if all of the following conditions exist throughout the permit area:
      1.   No proposed fills are greater than ten feet (10') in maximum depth.
      2.   No proposed finish cut or fill slope faces have a vertical height in excess of ten feet (10').
      3.   No existing slope faces, which have a slope face steeper than ten (10) horizontally to one vertically, have a vertical height in excess of ten feet (10'). (Ord. 1523, 4-11-1995)