A. Ravines: Except as otherwise expressly provided in subsection C of this section, no principal structure or building, no accessory structure or building that requires the issuance of a building permit pursuant to this code, and no driveway shall be erected or altered on any lot so as to place any portion of any such building, structure, or driveway within ten feet (10') from any top ravine edge.
B. Bluffs:
1. Principal Structures And Buildings: Except as otherwise expressly provided in subsection C of this section, no principal structure or building or driveway shall be erected or altered on any lot so as to place any portion of any such building, structure, or driveway within forty feet (40') from any top bluff edge.
2. Small Accessory Structures And Buildings: Except as otherwise expressly provided in subsection C of this section, no accessory structure or building that is equal to or less than four hundred forty (440) square feet in area and that requires the issuance of a building permit pursuant to this code shall be erected or altered on any lot so as to place any portion of any such building or structure within ten feet (10') from any top bluff edge.
3. Large Accessory Structures And Buildings: Except as otherwise expressly provided in subsection C of this section, no accessory structure or building that is greater than four hundred forty (440) square feet in area and that requires the issuance of a building permit pursuant to this code shall be erected or altered on any lot so as to place any portion of any such building or structure closer to any top bluff edge than ten feet (10'), plus an additional 0.053 feet for every one foot (1') that the accessory structure or building exceeds four hundred forty (440) square feet in area.
C. Exceptions:
1. Nonimpervious And Other Improvements: Notwithstanding the setback requirements in subsections A and B of this section, any nonimpervious improvement including, without limitation, a paver patio, and any other improvement that does not require the issuance of a building permit pursuant to this code, including, without limitation, a swing set or similar apparatus, may be located up to but no further than the top ravine edge of a ravine or the top bluff edge of a bluff, as the case may be; provided, however, that such improvement does not, as determined in advance by the village engineer, adversely affect stormwater drainage or unnecessarily accelerate erosion of the bluff or ravine or otherwise create a hazardous condition or public nuisance.
2. Swimming Pools: Notwithstanding the setback requirements in subsections A and B of this section:
a. No swimming pool shall be located within twenty feet (20') from any top ravine edge; and
b. No swimming pool shall be located within forty feet (40') from any top bluff edge. (Ord. 99-9, 3-8-1999; amd. Ord. 99-15, 5-24-1999)