[HISTORY: Adopted by the Town Board of the Town of Wallkill 3-8-2001 by L.L. No. 1-2001. Amendments noted where applicable.]
In any project, wherein site plan approval is required by the Planning Board, including, but not limited to, condominium, townhouse, apartment, commercial and business parks, the ownership and maintenance responsibility for stormwater retention and detention basins and water quality basins shall remain with the site owner. Construction, operation and maintenance shall be required for any site plan approval.
For site plans, any such basins shall remain on the same lot as the site improvements. It is not permissible to create a separate lot for any such basin.
For subdivisions, a homeowners' association shall not be obligated to own and maintain the drainage basins or ponds.
For subdivisions, the town shall accept dedication of the properties on which the basin and improvements are located and assume maintenance responsibilities, this being determined the best alternative to guarantee the long-term proper function of the improvements.
For subdivisions, in order to create a device to financially support the maintenance of needed drainage facilities, a drainage district shall be created, which shall incorporate all lots of the subdivision and any other lots the town may determine are benefited by the improvements; and the drainage district shall be formed, before final subdivision approval, with all costs borne by the developer.
Drainage districts so formed shall contract out for grass mowing, maintenance and clean-out of the basins approximately six times per year or as required; and the Department of Public Works shall maintain the inlet and outlet structures as required.
Prior to subdivision approval, the developer shall provide a deed of said facilities to the town, including a metes and bounds description for the basin parcel or easement to the attorney for the town, the engineer for the town and Highway Superintendent for review and approval.
The following basin design criteria shall be incorporated into all basins and ponds:
Landscaping is required where buffers or screening are necessary, staggered white pine plantings and berms being deemed preferable for these situations as determined by the Planning Board.
Basins shall include stone channels between inlet and outlet locations. The channel shall be over excavated, filled with stone during construction and have a final course of rip-rap placed after initial siltation occurs and the basin is stabilized.
Side slopes shall generally be 1:3 (vertical:horizontal).
Maximum side slope shall be 1:2.
Fences may be required at the discretion of the Planning Board.
All drainage basins will be provided with maintenance roads for access, including easements. The design and detail shall be provided as part of the plan submitted for Planning Board review and shall be found acceptable to the Town Engineer and Department of Pubic Works Superintendent.