Prior to the granting of Final Plat approval, the subdivider shall have installed or shall have furnished adequate bond, as provided in Section 1181.13 hereof, for the ultimate installation of the following:
(a) All necessary facilities, including underground pipe, inlets, catch basins or open drainage ditches shall be installed to provide for the adequate disposal of surface water and to maintain any natural drainage course. Storm drainage, including drain tile around basements, shall not be permitted to discharge into any sanitary sewer facility, but shall connect to an adequate drainage outlet.
(b) Catch basins shall be installed in street gutters and located so that not more than four hundred (400) feet of gutter is drained into any basin. The catch basins shall conform to ODOT Construction and Material Specifications Item 604.
(c) Storm sewers shall be installed to outlet the street catch basins and to provide storm drainage for the lots. Storm sewers shall extend to the farthest lot line and terminate in a manhole that conforms to ODOT Construction and Material Specifications Item 604. These sewers shall be a minimum of twelve (12) inches in diameter and consist of tongue and groove, sealed joint, rigid pipe or an approval equal. All storm sewers under the pavement and curbs shall be of reinforced or extra strength pipe and shall be backfilled with granular material in concurrence with ODOT Construction and Material Specifications Item 603 Type B conduit specifications. All sewers shall be laid with a gradient that will provide a minimum full flow velocity of two (2) feet per second.
(d) All storm sewers must be inspected by a representative of the Village and thereby obtain approval from the Village before backfilling. Final acceptance of the storm sewer system will not be made without this approval.
(e) In order to protect the health, safety, and general welfare of the people, the Planning Commission may reject any proposed subdivision located in an area subject to periodic flooding, and may reject any proposed subdivision located in a one hundred (100) year floodplain, as identified by the Federal Emergency Management Agency or other appropriate authority. If the subdivision is located in an area having poor drainage or other adverse physical characteristics, the Commission may approve the subdivision provided the subdivider designs the subdivision to mitigate and minimize the disturbance of the one hundred (100) year floodplain. In lieu of improvements, the subdivider shall furnish adequate bond, as provided in Section 1181.13 hereof, covering the cost of the required improvements.
(f) Where natural drainage channels intersect the street right-of-way, it shall be the responsibility of the subdivider to have satisfactory bridges and/or culverts constructed. Where culverts are required, the following minimum requirements shall be observed:
(1) All culverts shall extended across the entire right-of-way width of the proposed road. The cover over the culvert and its capacity shall be approved by the responsible government official, depending upon jurisdiction. The minimum diameter of a culvert pipe shall be 18 inches. Head walls, depending on existing drainage conditions, may be required.
(2) Driveway culverts shall have a minimum length of twenty (20) feet. The diameter of driveway culverts shall be subject to the approval of the responsible governmental official, depending upon jurisdiction. The driveway culverts shall be laid so as to maintain the flow lines of the ditch or gutter. Head walls may be required.
(g) Standards and Specifications for Drainage Facilities: The construction of storm water drainage improvements shall be subject to the approval of the authority having jurisdiction.
(Ord. 95-35. Passed 11-20-95.)