(A) It is the objective of this chapter to control soil erosion and sedimentation caused by development activities within the county. Measures taken to control erosion and sedimentation as adopted by §§ 155.35 through 155.43 should be adequate lo assure that sediment is not transported from the site by a storm event. The following principles shall apply to all development activities within the county’s jurisdiction and to the preparation of the submissions required under §§ 155.15 through 155.22.
(B) Development should be related to the existing topography and soils of the site so as to create the least potential for erosion. Areas of steep slopes where high cuts and fills may be required should be avoided wherever possible, and natural contours should be followed as closely as possible.
(C) Natural vegetation should be retained and protected wherever possible. Areas immediately adjacent to natural watercourses should be left unaltered wherever possible.
(D) The smallest practical area of land should be exposed for the shortest practical time during development.
(E) Sediment basins, debris basins, desilting basins or silt traps or filters should be installed and maintained to remove sediment from runoff waters from land altering activity or development.
(F) The selection of erosion and sedimentation control measures should be based on assessment of the probable frequency of climatic and other events likely to contribute to erosion, and on evaluation of the risks, costs and benefits involved.
(G) In the design of erosion control facilities and practices, aesthetics and the requirements of continuing maintenance should be considered.
(H) Provisions should be made to accommodate the increased runoff caused by changed soil and surface conditions during and after development. Drainageways should be designed so that their final gradients and the resultant velocities of discharge will not create additional erosion.
(I) Permanent vegetation and structures should be installed as soon as practical during development.
(J) Post construction measures should be considered for their ability to provide long-term reduction in associated pollutant loading of the waterways.
(Ord. 2008-07, passed 5-5-2008)