Utility improvements shall be provided by the proprietor in accordance with the standards and requirements established in this section and any other such standards and requirements which may from time to time be established by the Township Engineer or by the Township Board.
(A) Requirements for underground wiring. The proprietor shall make arrangements for all distribution lines for telephone, electric and cable television service to be placed underground entirely throughout a subdivided area. The conduits or cables shall be placed within 12-foot wide easements provided to such service companies by the developer. These easements shall be located adjacent to the road right-of-way or in the rear of the lots. No underground wiring shall be located within a public road right-of-way. Telephone and electrical facilities shall be planned so as not to conflict with other underground utilities. The proposed location of all underground wiring shall be submitted to the Township Engineer for approval. Installation shall not proceed until this approval has been granted. All telephone and electrical facilities shall be constructed in accordance with standards of construction approved by the Michigan Public Service Commission. All drainage and underground utility installations which traverse privately owned property shall be protected by easements granted by the proprietor.
(B) Storm drainage system.
(1) An adequate storm drainage system including necessary storm sewers, catch basins, manholes, culverts, bridges and other appurtenances shall be required in all subdivisions. Paved spillways shall be required when deemed necessary by the Township Engineer.
(2) Adequate provision shall be made for proper drainage of stormwater runoff from residential rear yards. Each yard shall be self-contained and shall be drained from rear to front except where topography or other natural features require otherwise. The Township Engineering Consultant may approve drainage to the rear lot line where adequate rear yard drainage is provided.
(3) Ditch bottoms having greater than a 3% slope shall be sodded. Ditch bottoms having greater than a 5% slope shall not be permitted.
(4) A detention basin is required for all subdivisions, unless the property is located adjacent to an existing water body and the petitioner submits a hydraulic study prepared by a registered engineer which shows the runoff from the development will not adversely affect any or the downstream properties. A sedimentation basin shall be provided for all developments which do not require detention. Such drainage shall be permitted only with the approval of the GCDC.
(5) All detention and retention ponds shall be designed to have a naturalistic appearance and have gradual side slopes of not more than 1:6 so as to not require security fencing.
(6) Where county drains are involved, the GCDC approval shall be required prior to final preliminary plat approval by the township.
(7) Detention or retention ponds shall not be within the boundaries of any lot intended for residential use. No detention or retention pond shall be placed within a required buffer zone or along a county road right-of-way unless it is demonstrated to the satisfaction of the Township Engineering Consultant and Planning Commission that there is no other alternative.
(C) Sewage system. Public sanitary sewers and other required appurtenances thereto shall be installed in such manner as to adequately serve all lots shown on the subdivision plat. Construction plans for sanitary sewers shall be approved by the Township Engineering Consultant.
(D) Water supply. Water mains, fire hydrants, required water system appurtenances shall be constructed in such a manner as to adequately serve all lots shown on the subdivision plat, both for domestic use and fire protection. Construction plans for public water shall be approved by the Township Engineering Consultant.
(Ord. 372.1 § 405, passed 6-10-1999)