(A) Grading, erosion control practices, sediment control practices, and waterway crossings shall meet the design criteria set forth in the most recent version of the Ohio DNR Rainwater and Land Development manual, and shall be adequate to prevent transportation of sediment from the site to the satisfaction of the Village of Indian Hill. Erosion and sediment controls or BMPs shall also comply with the SWP3 requirements prescribed in the OEPA NPDES Construction General Permit, latest version.
(B) The following principles are effective in minimizing erosion and sedimentation and shall be included where applicable in the control plan:
(1) Stripping of vegetation, regrading, or other development shall be done in such a way that will minimize erosion. Whenever feasible, natural vegetation shall be retained, protected, and supplemented.
(2) Development plans shall preserve salient natural features, keep cut-fill operations to a minimum, and ensure conformity with topography so as to create the least erosion potential.
(3) The smallest practical area of land shall be exposed at any one time and the duration of exposure shall be kept to a practical minimum, the topsoil shall be preserved and returned to the surface of areas to be revegetated.
(4) Disturbed soils shall be stabilized as quickly as practicable with temporary vegetation or mulching to protect exposed critical areas during development.
(5) The permanent final vegetation and structural erosion control and drainage measures shall be installed as soon as practical in the development.
(6) Provisions shall be made to effectively accommodate the increased runoff caused by changed soil and surface conditions during and after development. Where necessary, surface water runoff shall be structurally retarded.
(7) Sediment in the runoff water shall be trapped until the disturbed area is stabilized by the use of debris basins, sediment basins, silt traps, or similar measures.
(Ord. 12-20, passed 11-23-20)