[Amended 7-5-2023 by L.L. No. 3-2023]
The way in which presently undeveloped acreage in the Village is developed is of critical importance to the public interest. The standards for lot count contained in Chapter
211 of the Village Code, which exclude environmentally sensitive lands from the acreage upon which lot count is based, are designed to provide for flexibility in the siting of buildings and other facilities so that the disturbance or alteration of steep slope areas and other environmentally sensitive lands can be avoided. Nonetheless, the Village recognizes that disturbance or alteration of steep slope areas may be necessary in some cases involving only moderately steep slopes (grades of between 15% and 30%), and in exceptional cases involving grades of 30% or greater in which compelling circumstances clearly demonstrate the need to disturb steep slopes and adequate protection measures will be provided. The purpose of this chapter is to establish regulations which prevent improper disturbance or alteration of steep slopes. The intent is not to restrict general development in the Village, but to guide land use proposals into areas where they best preserve and enhance these natural resources and preserve and protect the visual and environmental character of the land.
[Amended 7-5-2023 by L.L. No. 3-2023]
As used in this chapter, the following terms shall have the
meanings indicated:
CUSTOMARY LANDSCAPING
Land maintenance involving tree trimming and pruning, the
removal of dead and diseased vegetation, lawn and garden care and
the planting of decorative trees, shrubs and plants.
DISTURBANCE
Excavation or fill or any combination thereof and shall include
the conditions resulting from any excavation or fill.
EXCAVATION
Any act by which earth, sand, gravel, rock or any other similar
material is cut into, dug, quarried, uncovered, removed, displaced
or spread.
FILL
Any act by which earth, sand, gravel, rock or any other material
is deposited, placed, replaced, dumped, transported or moved by person
or persons to a new location.
HILLTOP
A roughly circular area defined by a radius of 50 feet from
the highest point of a hill or rise of land.
PLATEAU
A flat or predominantly flat area of land which is raised
sharply above adjacent land on at least one side.
RIDGELINE
Areas 50 feet back from prominent hilltops, ridges, plateaus
with a slope of at least 15% and a minimum length of 100 feet as measured
along the center line of the ridge, and other such topographic features
that are visible from a public property, roads open to the public
or other areas open to or accessible to the public, the development
of which may impact scenic views, surface water drainage systems,
open space, wildlife corridors, and existing vegetation as determined
by the Village
STEEP SLOPES
Ground areas with a slope 15% or greater with a minimum area
of 1000 square feet which possess one dimension of a minimum of 20
feet. Measurements shall be made along a horizontal plane.
The approval authority with respect to applications hereunder
shall be as follows:
A. The Zoning Board of Appeals shall be the approval authority with
respect to any application which requires the issuance of any other
permit or approval by it pursuant to the local laws and ordinances
of the Village of Buchanan.
B. The Planning Board shall be the approval authority with respect to
any application which requires the issuance of any other permit or
approval by it pursuant to the local laws and ordinances of the Village
of Buchanan, including any application which also requires the issuance
of any permit or approval by the Zoning Board of Appeals.
C. The Village Board shall be the approval authority with respect to
any application which requires the issuance of any other permit or
approval by it pursuant to the local laws and ordinances of the Village
of Buchanan, including any application which also requires the issuance
of any permit or approval by the Zoning Board of Appeals or the Planning
Board.
D. The Building Inspector or his designee shall be the approval authority
with respect to all other regulated activities.
In denying, granting or granting with modifications any application for a permit as required by this section, the approval authority shall consider, and make specific findings addressing, the consistency of the proposed activity with the findings set forth in §
165-2 of this chapter and each of the following standards:
A. Disturbance or alterations of trees and forests and topographical
disturbances or alterations on steep slopes shall be in conformance
with all provisions of this chapter, as well as with all other applicable
ordinances and regulations of the Village of Buchanan, including,
by way of example only, the requirements of a chapter regarding flood
damage control, a chapter regarding trees, and a chapter regarding
diversion of watercourses.
B. Activities within wetlands shall be in conformance with Chapter
203, Wetlands, and, whether within or outside of wetlands, will not adversely affect any wetlands, water bodies, or watercourses.
C. The proposed activity will not result in creep, sudden slope failure,
or additional erosion.
D. The proposed activity will not adversely affect existing or proposed
wells or sewage disposal systems.
E. The proposed activity will not adversely affect any endangered or
threatened species of flora or fauna.
F. The proposed activity is in accordance with the principles and recommendations
of the most recent Master Plan of the Village of Buchanan.
G. The proposed activity constitutes the minimum disturbance necessary
to allow the property owner a reasonable use of the property.
H. Disturbance or alteration of areas with steep slopes shall additionally
be in conformance with the following provisions:
(1) The planning, design and development of buildings and site modifications
shall provide the maximum in structural safety, slope stability and
human enjoyment while adapting the affected site to, and taking advantage
of, the best use of the natural terrain and aesthetic character.
[Amended 7-5-2023 by L.L. No. 3-2023]
(2) Retaining walls six feet or greater in height shall be considered an accessory structure and shall be subject to the requirements of §
211-19.
[Amended 7-5-2023 by L.L. No. 3-2023]
(3) The terracing of building sites shall be kept to an absolute minimum.
Terraced retaining walls within a horizontal distance equal to 1/2
the height of the greater wall shall be considered and measured as
a single wall.
[Amended 7-5-2023 by L.L. No. 3-2023]
(4) Structures are designed to fit into the hillside rather than altering
the hillside to fit the structure, employing methods such as reduced
footprint design, step down structures, stilt houses, and minimization
of grading outside the building footprint.
[Amended 7-5-2023 by L.L. No. 3-2023]
(5) The natural elevations and vegetative cover of ridgelines shall be
disturbed only if the crest of a ridge and the tree line at the ridge
remain uninterrupted. This may be accomplished either by positioning
buildings and areas of disturbance below a ridgeline or by positioning
buildings and areas of disturbance at a ridgeline so that the elevation
of the roofline of the building is no greater than the elevation of
the natural tree line. However, under no circumstances shall more
than 100 feet along the ridgeline, to a width of 100 feet generally
centered on the ridgeline, be disturbed.
(6) Any regrading shall blend in with the natural contours and undulations
of the land.
(7) Cuts and fills shall be rounded off to eliminate sharp angles at
the top, bottom and sides of regraded slopes. Visible construction
cuts and permanent scarring should be minimized.
(8) The angle of cut and fill slopes shall not exceed a slope of one
vertical to two horizontal except where retaining walls, structural
stabilization or other methods acceptable to the Building Inspector
or Village Engineer are used.
(9) Tops and bottoms of cut and fill slopes shall be set back from structures
a distance that will ensure the safety of the structure in the event
of the collapse of the cut or fill slopes. Generally, such distance
shall be considered to be six feet plus 1/2 the height of the cut
or fill. Nevertheless, a structure built on a slope or at the toe
of a slope is permitted if it is properly designed to retain the slope
and withstand the forces exerted on it by the retained slope.
(10)
Disturbance of rock outcrops shall be by means of explosive
only if labor and machines are not effective and only if rock blasting
is conducted in accordance with all applicable laws and regulations
of the Village of Buchanan, County of Westchester, and the State of
New York.
(11)
Tops and bottoms of cut and fill slopes shall be set back from
structures a distance that will ensure the safety of the structure
in the event of the collapse of the cut or fill slopes. Generally,
such distance shall be considered to be six feet plus 1/2 the height
of the cut or fill. Nevertheless, a structure built on a slope or
at the toe of a slope is permitted if it is properly designed by a
NYS licensed professional engineer to retain the slope and withstand
the forces exerted on it by the retained slope.
[Amended 7-5-2023 by L.L. No. 3-2023]
(12)
Disturbance of existing vegetative ground cover shall not take
place more than 15 days prior to grading and construction.
(13)
Temporary soil stabilization, including, if appropriate, temporary
stabilization measures such as netting or mulching to secure soil
during the grow-in period, must be applied to an area of disturbance
within two days of establishing the final grade, and permanent stabilization
must be applied within 15 days of establishing the final grade.
(14)
Soil stabilization must be applied within two days of disturbance
if the final grade is not expected to be established within 60 days.
(15)
Measures for the control of erosion and sedimentation shall
be undertaken consistent with the Westchester County Soil and Water
Conservation District's Best Management Practices Manual for Erosion
and Sediment Control and New York State Guidelines for Urban Erosion
and Sediment Control, as amended, or their equivalents satisfactory
to the approval authority.
(16)
Soil stabilization must be applied within two days of disturbance
if the final grade is not expected to be established within 60 days
or prior to close of the construction season, whichever occurs first.
[Amended 7-5-2023 by L.L. No. 3-2023]
(17)
Topsoil shall be stripped from all areas of disturbance, stockpiled
and stabilized in a manner to minimize erosion and sedimentation and
replaced elsewhere on the site at the time of final grading. Stockpiling
shall not be permitted on slopes of greater than 10%.
(18)
No organic material or rock with a size that will not allow
appropriate compaction or cover by topsoil shall be used as fill material.
Fill material shall be no less granular than the soil upon which it
is placed and shall drain readily.
(19)
Compaction of fill materials in fill areas shall be such to
ensure support of proposed structures and stabilization for intended
uses.
I. Burden of proof.
[Amended 7-5-2023 by L.L. No. 3-2023]
(1) The presumption in all cases shall be that no disturbance or alteration of any steep slope shall be approved by the approval authority. The applicant shall in all cases have the burden of proof of demonstrating, by clear and convincing evidence, that the proposed activity is fully consistent with each of the findings set forth in §
165-2 and that each of the standards for approval set forth in Subsections
A through
G above have been fully and completely met.
(2) With respect to applications involving proposed disturbance or alteration
of any excessively steep slope with a grade of 30% or greater, the
applicant shall have the additional burden of demonstrating full compliance
with all sections of this chapter and that standard engineering practices
are followed to avoid slope failure, erosion, or adverse impacts to
neighboring properties or natural resources. It must be further demonstrated
that the proposed disturbance of excessively steep slopes is limited
in extent reasonable and necessary for construction, safe, and consistent
with the other provisions of the Village Code.
(3) Not
more than 30% of a site's excessively steep slopes should be disturbed.
For proposed disturbances in excess of 30% of a site's excessively
steep slopes, the applicant shall submit a before-and-after visual
impact analysis and a report prepared by a NYS licensed geotechnical
engineer indicating the impacts of the disturbance to the steep slopes
and provide a slope stability analysis.
[Amended 7-5-2023 by L.L. No. 3-2023]
In granting a permit, the approval authority shall require security,
in an amount and with surety and conditions satisfactory to it, securing
to the Village of Buchanan compliance with the conditions and limitations
set forth in the permit. The amount of the security shall be as recommended
by the Village Engineer based on the estimated cost of construction
to stabilize the area of steep slope disturbance at prevailing wage
rates and municipal administrative costs.
[Amended 7-5-2023 by L.L. No. 3-2023]
A. The Building Inspector or his designee shall inspect on behalf of the approval authority activities undertaken pursuant to a permit so as to ensure satisfactory completion. If, upon inspection, it is found that any of the activities have not been undertaken in accordance with the permit, the applicant shall be responsible for completing those activities according to the permit (in addition to being subject to the sanctions set forth in §
165-11). Failure of the Village to carry out such inspections shall not in any way relieve the applicant or its surety of its responsibilities.
B. The Building Inspector or his designee may require that the applicant
submit for review and approval by the Village Engineer of the Village
of Buchanan a detailed monitoring program, including but not necessarily
limited to written status reports at specified intervals documenting
activities undertaken pursuant to a permit. Where such a monitoring
program has been required, the applicant shall notify the approval
authority and the Building Inspector upon reaching stages of the activity
as may be required in the permit. No activity requiring inspection
shall be approved absent such notification.
C. The approval authority may require that the activities undertaken
pursuant to a permit be supervised by an appropriate licensed professional.
D. At the
completion of the project, an as-built plan and construction certification
letter prepared by a NYS licensed professional engineer shall be prepared
and submitted to the Village Engineer for review and acceptance. For
the site to be accepted and any security being held by the Village
to be released, the site must be constructed in general conformance
with the approved plan and fully stabilized as determined by the Village
Engineer.