The purpose of this chapter is to mitigate the potentially adverse
effects of sediment-laden stormwater runoff resulting from soil disturbance
on steep slopes, to protect the water quality of Canandaigua Lake
as well as the watercourses throughout the Town and to promote the
health, safety and general welfare of the Town of South Bristol.
When used in this chapter, the following terms shall have the
meanings herein ascribed to them:
AREA OF DISTURBANCE
An area depicted on the applicant's initial request
measured in square feet. If a professional plan is required, said
professional shall calculate an area of disturbance based upon the
scope of the work proposed and the terrain of the disturbed area.
If a disparity exists between the applicant's initial calculations
and that of the licensed professional, the professional calculations
will take precedence.
NATURE TRAIL
Any path less than seven feet in width; said trail shall
not have an impervious surface of any kind.
ONCOR (ONTARIO COUNTY ONLINE RESOURCES)
This is the official resource utilized by the Code Enforcement
Officer to determine the applicability of the steep slopes requirements.
The online resource will detail the following information:
RECONSTRUCTION (AS PERTAINING TO DRIVEWAYS)
The effort to remove and replace the existing driveway base,
the widening of the existing driveway by 25% or greater, or the relocation
of the existing driveway to another location.
SOIL DISTURBANCE
A defined area of land where the natural vegetative cover
has been removed or is proposed to be removed. Soil disturbance is
inclusive of placing or filling soil on top of the natural vegetative
cover.
STEEP SLOPES MAP
A hard copy map derived from ONCOR in the possession of the
Code Enforcement Officer's office. The hard copy map will detail
the line at 2,000 feet from the mean high-water mark on Canandaigua
Lake.
TEN-YEAR STORM
The surface runoff resulting from a rainfall of intensity
expected to be equaled or exceeded, on average, once in 10 years,
and of duration which will produce the maximum peak rate of runoff
for the watershed of interest under average antecedent wetness conditions.
Thresholds. The following thresholds have been established regarding
soil disturbances on steep slopes as determined by the official South
Bristol Steep Slopes Map and ONCOR (Ontario County Online Resources).
The following thresholds will determine if a steep slopes permit is
required:
A. In the event that the slope of any part of the disturbed area will be equal to or greater than 15% and if any of the following three conditions apply, then a steep slopes permit is required unless the disturbance is the result of an exempted activity in §
148-5 hereof.
(1) There will be 1,000 square feet or greater of steep slopes disturbance
totally within 2,000 horizontal feet of Canandaigua Lake.
(2) There will be 2,000 square feet or greater of steep slopes disturbance
totally within 100 horizontal feet of a watercourse.
(3) There will be 12,000 square feet or greater of steep slopes disturbance
in any other area of the Town.
The following activities do not require a steep slopes permit:
A. Agriculture related to soil cultivation.
C. Nature trails less than seven feet in width.
E. Permitted mining activities.
G. Maintenance of existing driveways, not to include reconstruction
(see definition).
H. Commercial ski area operations.
I. Emergency situations; where the disturbance is required to protect
persons or property from imminent danger. These must be reported to
the Town of South Bristol Code Enforcement Officer within 48 hours
of the disturbance.
Steep slope permits shall become invalid unless the authorized
work is commenced within six months following the date of issuance.
The permit shall expire 24 months after the date of issuance. A permit
which has expired pursuant to this subsection may be renewed for one
additional six-month-time period at no charge upon application by
the permit holder and approval of the application by the Code Enforcement
Officer. Upon expiration of the six-month extension period, if the
authorized work has not been completed, the permit shall expire and
a new permit must be applied for along with payment of any required
application fee.