The Village Board of Trustees of the Village of Ardsley hereby finds and declares it to be the public policy of the Village of Ardsley to preserve its wetlands (including water bodies and watercourses), its steep slopes and its trees, so as to protect both the environment and the aesthetic character of the Village. The following specific purposes and findings are related to each of these areas of environmental concern:
A.
Wetlands.
(1)
Population growth has produced increasing demands upon the Village's land and natural resources. The resulting development is encroaching upon, despoiling, polluting and/or eliminating some of the Village's wetlands, water bodies, watercourses and other natural resources, including the natural processes associated therewith. The Village Board finds that it is necessary to preserve, protect and conserve Ardsley's wetlands, including water bodies and watercourses, so as to prevent their despoliation and destruction, and to regulate the use and development thereof. The preservation and maintenance of such natural features in an undisturbed condition is important for physical, ecological, social, aesthetic, recreational and economic reasons related to promoting the health, safety and general welfare of present and future residents of the Village, and of downstream drainage areas. In particular, wetlands serve multiple functions, including, but not limited to, the following:
(a)
Protecting water resources by providing sources of surface water, recharging groundwater and aquifers, serving as chemical and biological oxidation basins and functioning as settling basins for naturally occurring sedimentation.
(b)
Controlling flooding and stormwater runoff by storing or regulating natural flows.
(c)
Providing nesting, migratory and wintering habitats for diverse wildlife species, including many on the New York State and federal Endangered Species lists.
(d)
Supporting vegetative associations specifically adapted for survival in low-oxygen environments.
(e)
Providing areas of unusually high plant productivity which support significant wildlife diversity and abundance.
(f)
Providing breeding and spawning grounds, nursery habitat and food for various species of fish.
(g)
Serving as nutrient traps for nitrogen and phosphorus and filters for surface water pollutants.
(h)
Helping to maintain biospheric stability by supporting particularly efficient photosynthesizers capable of producing significant amounts of oxygen and supporting bacteria that process excess nitrates and nitrogenous pollutants and return them to the atmosphere as inert nitrogen gas.
(i)
Providing open space and visual relief from development.
(j)
Serving as outdoor laboratories and living classrooms for the study and appreciation of natural history, ecology and biology.
(2)
Some of these important natural resources have been lost or their function impaired by having been drained, dredged, filled, excavated, built upon, or polluted or by other actions which are inconsistent with their proper protection. Remaining wetlands, water bodies and watercourses are in similar jeopardy. It is the intent of this article to promote the public purposes identified in this section by providing for the protection, preservation, proper maintenance and use of the Village's wetlands, water bodies and watercourses; by preventing or minimizing erosion caused by stormwater runoff and flooding; by maintaining natural groundwater supplies; by preserving and protecting the purity, utility, water retention capability, ecological functions, recreational usefulness and natural beauty of all wetlands, water bodies, watercourses and other related features of the terrain; and by providing and protecting appropriate habitats for natural wildlife. The avoidance or minimization of development on wetlands or wetland buffers will also require appropriate adjustment of development density to achieve the stated purpose.
B.
Steep slopes.
(1)
Population growth and increased land values have resulted in the development of steep slope areas which were once considered to be unbuildable or prohibitively expensive to develop. The Village Board hereby finds that it is necessary to preserve, protect and conserve Ardsley's steep slope areas so as to prevent their unnecessary and improper disturbance with the resultant impact which that may have upon the public health, safety and general welfare. The preservation of such areas in an undisturbed condition is important for physical, ecological, social, aesthetic, recreational and economic reasons related to promoting and protecting the health, safety and general welfare of present and future residents of the Village and surrounding areas. The Village Board finds that it is particularly important to preserve steep slopes for the following reasons, among others:
(a)
The improperly managed disturbance of steep slopes can cause erosion and sedimentation to occur at rates in excess of those experienced under normal conditions. Erosion and sedimentation often includes the loss of topsoil (a valuable natural resource), and can result in the disturbance of natural habitats, the degradation of the quality of surface water, the alteration of drainage patterns, the gullying of land, the obstruction of drainage structures and the intensification of flooding, both on and off the subject site.
(b)
The inadequately or uncontrolled disturbance of steep slopes can lead to the failure of slopes and the mass movement of earth which creates safety concerns for persons, wildlife and man-made structures.
(c)
Sleep slopes, including vegetation and rock outcroppings located thereon, contribute to the attractive visual character of the Village and surrounding areas since such slopes are more highly visible from roadways and neighboring properties than are more level lands.
(2)
Regulation of development on steep slopes can eliminate, or at least minimize, the degradation of these important environmental features while still allowing the reasonable use of private property. This can be done by encouraging flexible development design which seeks to avoid the disturbance of steep slopes or, where that is impractical, requires that any such disturbance be conducted in accordance with acceptable engineering practices. The avoidance or minimization of development on steep slope areas will also require appropriate adjustment of development density to achieve the stated purpose.
C.
Trees. Population growth and changing lifestyles have resulted in increasing demands for the clearance of trees to provide space for various forms of human activity, including roadways, driveways, parking areas, buildings, patios, decks, swimming pools, and other such uses. The Village Board hereby finds that the preservation of trees is necessary to protect the health, safety and general welfare of the Village because trees provide shade, impede soil erosion, aid water absorption and water retention in the soil, inhibit excess runoff and flooding, enhance air quality, offer a natural barrier to noise and glare, provide a natural habitat for wildlife, provide screening, enhance property values and add to the general aesthetic quality of Ardsley. In particular, trees benefit the community in the following specific ways, among others:
(1)
By providing shade and cooling the air, ground and buildings.
(2)
By reducing wind, thereby resulting in greater energy efficiency for the heating of buildings during winter.
(3)
By reducing noise levels and glare.
(4)
By reducing soil erosion, especially on slopes.
(5)
By reducing stormwater runoff and the possibility of flooding.
(6)
By balancing the oxygen in the air by removing carbon dioxide.
(7)
By reducing air, soil and water pollution.
(8)
By providing habitat for wildlife.
(9)
By buffering views of man-made structures, thereby helping to maintain the attractive character of the Village.
(10)
By enhancing property values.