(A) Because considerable soil erosion can take place during the subdivision construction, development plans shall contain proposed erosion and sediment control measures. These measures shall be incorporated into the final plat and final construction drawings. Erosion and sediment control measures shall conform to the standards and specifications established by the Soil and Water Conservation District. The measures shall apply to all features of the construction site, including street and utility installations as well as to the protection of individual lots. Measures shall also be instituted to prevent or control erosion and sedimentation during the various stages of development. Technical standards for the design and installation of erosion and sediment control measures are on file at the office of the Soil and Water Conservation District and other governmental agencies.
(B) Practical combinations of the following general principles will provide effective sediment control when properly planned and applied:
(1) The development plan shall be fitted to the topography and soils so as to create the least erosion potential.
(2) Permanent vegetation and construction improvements such as streets, storm sewers or other features of the development shall be scheduled for installation to the greatest extent possible before removing the existing vegetation cover from an area.
(3) Whenever feasible, natural vegetation shall be retained and protected.
(4) Where inadequate vegetation (ground cover) exists, temporary or permanent vegetation shall be established.
(5) The smallest practical area of land shall be exposed at any one time during development.
(6) When land is exposed during development, the exposure shall be kept to the shortest practical period of time.
(7) Critical areas exposed during construction shall be protected with temporary vegetation or mulching.
(8) Sediment basins (debris basins, desilting basins or silt traps) shall be installed and maintained to remove sediment from runoff waters from land undergoing development.
(9) Provisions shall be made to accommodate effectively the increased runoff caused by changed soil and surface conditions during and after development.
(10) The permanent final vegetation and structures shall be installed as soon as practical in the development.
(BCC Ord. 1977-38, passed 12-19-77) Penalty, see § 10.99