In all major subdivisions and residential site plans, the developer shall reserve an area as specified in §
285-56 for recreational purposes. The developer shall improve this area for active and passive recreation. Plans for the improvement of this recreation area shall be an integral element of any preliminary plat and final construction drawings on any major subdivision or residential site plan. The developer shall have the option to post an off-tract assessment in the amount of $1,500 per lot or dwelling unit to be used for the construction of recreational facilities within the Township or provide services or property equal to said amount.