(A) The required width for the riparian buffer totals 50 feet (Zone 1 equals 25 feet, Zone 2 equals 25 feet). This buffer shall be extended if wetlands or steep slopes are present.
(1) Wetlands. When wetlands are present, the width of the streamside zone shall be adjusted so that the Zone 1 buffer will consist of the extent of the wetland plus 20 feet beyond the wetland edge.
(2) Percent slope. The riparian buffer width shall be modified if steep slopes are within close proximity to the stream and drain into the stream. The following extensions will be added to the standard 50-foot riparian buffer in relation to the slope of the stream bank. The extensions are calculated as follows:
Percent of Slope | Buffer Extension | Required Riparian Buffer Width | Adjusted Total Width |
15%—17% | 10 feet | 50 feet | 60 feet |
18%—20% | 30 feet | 50 feet | 80 feet |
21%—23% | 50 feet | 50 feet | 100 feet |
24%—25% | 60 feet | 50 feet | 110 feet |
>25% | 70 feet | 50 feet | 120 feet |
(B) Water pollution hazards. The following land uses and/or activities are designated as potential water pollution hazards, and must be set back from any stream or waterbody by the distance indicated below:
(1) Storage of hazardous substances: 150 feet;
(2) Above ground or underground petroleum storage facilities: 150 feet;
(3) Drain fields from on-site sewage disposal and treatment systems (i.e., septic systems): 50 feet;
(4) Raised septic systems: 50 feet;
(5) Solid waste landfills or junkyards: 300 feet;
(6) Confined animal feedlot operations: 250 feet;
(7) Subsurface discharges from a wastewater treatment plant: 50 feet; and
(8) Land application of bio-solids: 100 feet.
(1980 Code, Ch. 24, Part 5, § 502) (Ord. 1403, passed 7-18-2011, § 502)