[Amended 10-28-2014 by L.L. No. 9-2014; 10-27-2020 by L.L. No. 9-2020; 11-16-2020 by L.L. No. 10-2020]
A. No person shall commence or otherwise perform any land development
activity (major or minor) in the Village of Rye Brook that involves
a net increase of 400 or more square feet of impervious surface coverage
without first obtaining the proper stormwater management control permit
from the Village Public Works Department, and all other necessary
local, state and federal permits, and thereafter comply with the requirements
of this chapter.
B. A stormwater pollution prevention plan (SWPPP) or stormwater management plan must be prepared by a New York State-licensed professional engineer, architect, land surveyor, or landscape architect and submitted for review and approval by the Village Superintendent of Public Works/Village Engineer prior to commencement of any major land development activity as defined by §
217-7 of this chapter. The SWPPP or stormwater management plan, including all forms and other application materials, shall be submitted in electronic file format acceptable to the Village Superintendent of Public Works/Village Engineer in addition to at least one signed original application form and three paper copies of all plans and surveys, or such other format or amount as determined by the Village Superintendent of Public Works/Village Engineer. The Building Department may waive the electronic submission requirement only in extraordinary cases of technical infeasibility.
[Amended 10-16-2007 by L.L. No. 14-2007; 10-27-2020 by L.L. No. 9-2020; 11-16-2020 by L.L. No. 10-2020]
Stormwater control measures shall be selected by giving preference
to the best management practices for pollutant removal and flow attenuation
as specified in the NYS Stormwater Management Design Manual, the NYSDEC's
Reducing the Impacts of Stormwater Runoff from New Development, and
the Westchester County Best Management Practices Manual for Erosion
and Sediment Control. In addition, on-site stormwater management for
minor projects shall be designed for a concept termed "total volume
storage," which said concept requires all stormwater captured from
impervious surfaces to be contained within the site. The following
minimum design requirements shall apply to minor projects:
A. It is the responsibility of an applicant to include sufficient information
in the stormwater management and erosion control and sediment plans
so that the plans may be evaluated with respect to the environmental
characteristics of the affected areas, the potential and predicted
impacts of the proposed activity on community waters and the effectiveness
and acceptability of those measures proposed for reducing or mitigating
adverse impacts.
B. An application for stormwater management and erosion and sediment
control permits shall be made on forms provided by the Village, and
shall include the name(s) and address(es) of the owner, contract vendee,
or developer of the site, and of any consulting firm retained by the
applicant, together with the name and telephone number of the applicant's
principal contact at such firm. Each application shall include a certification
that any land clearing, construction, or development involving the
movement of earth shall be in accordance with the plans approved and
the permit issued. The permit will be valid for the same period as
the associated building or other municipal permits. Where a building
or other municipal permit is not issued, the stormwater management
and erosion and sediment control permits shall expire within 180 days
from the date of approval unless renewed by the Village Superintendent
of Public Works/Village Engineer.
C. Required information.
(1) Each application shall be accompanied by the following, unless specifically
waived by the Village Superintendent of Public Works/Village Engineer
based on the scope of the project:
(b)
A stormwater management and erosion and sediment control plan
for the site showing drainage patterns, on-site stormwater appurtenances,
wetlands, 100-year floodplain, and proposed use of the site, including
areas of excavation, grading and filling.
(c)
Stormwater management improvements, including calculations,
designs and special measures regarding safety and maintenance operations.
(d)
Stormwater conveyance system, including plans, designs and materials
to be used for improvements and erosion control in channel sections
of stormwater conveyance systems and erosion control measures at culvert
inlets and outfalls.
(2) Stormwater shall be managed on site using stormwater control measures
designed to afford optimum protection of ground and surface waters.
Stormwater shall be calculated in accordance with the methodology
for determining stormwater volume and flow rates using the following
methods: For new residential construction and for renovations or additions
to existing homes on individual lots, stormwater management shall
be designed for "total volume storage" in which all runoff shall be
captured from all impervious surfaces and directed into an on-site
catchment system with no discount or consideration to a predeveloped
condition. Volume of runoff shall be the product of the tributary
impervious area and the design storm quantity.
[Amended 3-8-2022 by L.L. No. 3-2022]
(3) Stormwater control measures shall be designed based upon the minimum
twenty-five-year design storm for local conditions. The design shall
consider all existing and new impervious surfaces, including but not
limited to roof areas, driveways, patios, deck areas, and walkways.
(4) Stormwater control measures may include, but shall not be limited
to, dry wells of precast concrete, recharge structures, and infiltration
trenches. Such measures may also include natural and human-made landscape
features such as depressions, blind ditches, retention ponds, swales
and other such measures. Inlets to infiltration devices shall be protected
from sediment at all times in order to maintain their capacity.
(5) Infiltration devices shall not be installed upgradient within 20
feet of the subsurface treatment system of a wastewater treatment
system. Infiltration devices for roadways, parking lots, and other
areas subject to vehicle traffic shall not be installed within 100
feet of any water well, wetland or water body.
(6) Infiltration devices and buildings shall be designed to maintain
maximum attainable horizontal distance separation from wells, water
bodies and wetlands. Pumping stormwater shall not be permitted.
(7) The bottom of any infiltration device shall be a minimum of two feet
above seasonal high groundwater mark and two feet above bedrock.
(8) Temporary erosion controls shall be required to prevent siltation
of water bodies during construction.
No application for approval of a major land
development activity as defined in this chapter shall be reviewed
until the approval authority has received a stormwater pollution prevention
plan (SWPPP) prepared in accordance with the specifications in this
chapter.
The SWPPP shall be prepared by a licensed landscape
architect or licensed engineer and must be signed by the professional
preparing the plan, who shall certify that the design of all stormwater
management practices meet the requirements in this chapter.
The applicant shall assure that all other applicable
environmental permits have been or will be acquired for the land development
activity prior to approval of the final stormwater design plan.
A copy of the approved SWPPP shall be retained
at the site of the land development activity during construction,
from the date of initiation of construction activities to the date
of final stabilization.