Minimum requirements shall be as established
by the New York State Department of Environmental Conservation, Genesee
County Health Department, and the Village of Bergen DPW, where applicable.
A.
Gravity sewers, expanded information.
(1)
Sewer mains shall be a minimum of eight-inch diameter
except in those areas where the sewer shall be of the diameter outlined
in a Comprehensive Plan.
(2)
Manhole spacing, maximum of 300 lineal feet.
(3)
The sewer shall be designed at such a depth to provide
basement drainage. If site conditions are such that basement drainage
cannot be provided to all units, a specific note to that effect shall
be placed on the plan.
(4)
All necessary mains and laterals required to connect
to the public sewage system as shown on the final approved plan shall
be installed by the developer.
(5)
Elevations. Where other utilities parallel or cross
the sanitary system, vertical clearance between the systems shall
be provided to permit the satisfactory installation of all services.
(6)
Laterals for each individual lot shall be:
(a)
Minimum of four inches in diameter.
(b)
Minimum of slope 1/4 inch per lineal foot (2%).
(c)
Cleanouts shall be provided at a maximum distance
of 85 feet and one shall be located on the right-of-way or easement
line. All cleanouts shall include a cast-iron cover per Appendix C.[1]
[1]
Editor's Note: Appendix C is included at the end of this chapter.
B.
Pressure sewers.
(1)
Pressure sewer systems shall be laid out in a configuration
that is hydraulically efficient.
(2)
Access shall be provided at the upstream end of each
force main branch.
(3)
All appurtenances and fittings shall be compatible
with the piping system designed and shall be full bore with smooth
interior surfaces.
(4)
Building service connections shall have a minimum
diameter of 1 1/2 inches saddle tapped with stainless steel bands
and shall tap into the force main with a corporation stop. A check
valve shall be provided near the service pump.
C.
Sewage lift stations. In all cases, the use of gravity
systems are encouraged over pump stations. Specific geographic and/or
topographic areas may require the use of sewage lift stations to transmit
contributory flows to the trunk sewer system.
(1)
Before sewage-pumping stations are designed they will
be discussed with the Town to provide compatible equipment to that
already in use.
(2)
Compliance with design criteria of the New York State
Department of Environmental Conservation Recommended Standards for
Wastewater Facilities (1990).
(3)
Provision of an audible and visual high-water alarm
system, battery backup operated.
(4)
Provision to operate pumps on supplied auxiliary power
equipment.
(5)
Pump stations shall be designed to have the controls
and motors above ground as manufactured by Gorman-Rupp or approved
equal.
(6)
Elapsed time meters shall be provided on the motors
to determine quantity of flow being pumped from the station.
All development projects shall be required to
provide for the adequate conveyance of storm drainage through the
development. The natural drainage patterns are to be followed as much
as possible. Storm sewer systems shall be sized to accommodate the
future potential runoff based on the probable land use and the ultimate
development of the upland watershed area based on the Town's Comprehensive
Plan. All development projects shall be required to obtain coverage
with the SPDES general permit. Where conditions imposed by the SPDES
general permit are more restrictive than comparable restrictions imposed
by these regulations, or any other Town ordinances, the provisions
which are more restrictive shall govern.
A.
Stormwater sizing criteria. All stormwater sizing
shall be in conformance with methods outlined in the New York State
Stormwater Management Design Manual.
B.
Stormwater management practices (SMPs). The New York
State Stormwater Management Design Manual outlines acceptable stormwater
management practices (SMPs) to meet water quantity and water quality
treatment goals. The Planning Board shall, upon recommendation from
the Town Engineer, approve the SMP(s) implemented on a particular
development. Where conditions warrant, the Planning Board may require
specific or additional SMP(s) to be implemented.
C.
Storm sewer system.
(1)
Inlets.
(a)
Catch basins. Catch basins shall be placed at
all low points and intersections with maximum spacing of 300 feet.
Catch basin leads shall only be connected to the storm sewers at manholes.
(2)
Conveyance.
(a)
Natural channels and open swales.
[1]
Natural channels are generally preferred alignments
for major components of a residential drainage system. However, the
utilization of open channels shall be evaluated as to the ease and
cost of maintenance, safety hazards and aesthetics. The channels may
require special invert or side design to properly convey water while
keeping the maintenance cost minimal.
[2]
Backyard swales shall be designed with minimum
side slopes of one on four and a minimum longitudinal slope of 1.0%.
Field inlets shall be generally provided every 300 lineal feet at
all low points and where swales intersect.
(b)
Storm sewers.
[1]
Minimum pipe size: twelve-inch diameter.
[2]
Minimum velocity when flowing full: three feet
per second.
[3]
Maximum manhole and catch basin spacing: 300
lineal feet.
[4]
In general, street drainage shall be in closed
conduit. When gradient and tributary runoff require conduit greater
than 36 inches in diameter, then open channel design may be considered.
[5]
Culverts shall be designed to accommodate the
design storm for the drainage area but shall be checked for the next-highest
increment of storm return interval to evaluate the possible complications.
Headwater and/or tailwater calculations will be required to determine
ponding that may occur. In general, the use of multiple culverts is
discouraged because of maintenance problems. Inlets and outlets of
culverts shall be protected from erosion or turbulence problems by
the use of riprap, headwalls, energy dissipaters, etc.
(c)
Storm laterals. Gravity laterals shall be a
minimum of six inches in diameter. Sump pumps with check valves will
be permitted to discharge to storm laterals or, in the absence of
storm sewers, to splash pads directed to side or rear yard drainage
swales. Roof runoff will not be permitted to tie into the storm laterals
directly but discharge to splash pads.
(3)
Outfalls. Points of discharge shall be recognized
USGS drainage courses, which may require the developer to acquire
downstream easements for dedication to the Town.
(4)
Stormwater management facilities. All facilities shall
be designed in accordance the New York State Stormwater Management
Design Manual.
D.
Drainage easements. The minimum easement width shall
be 20 feet, but the actual width acceptable to the Town will consider
all those factors previously listed.
All work performed and materials furnished for
the purpose of supplying the development with potable water shall
comply with the specifications of the Monroe County Water Authority.
A.
Design.
(1)
Water supply system shall be designed to provide adequate
domestic usage and fire protection. Where public water supply is not
accessible, an alternate private supply shall be furnished, which
conforms to the New York State Health Department regulations.
(2)
All main and service sizing shall be substantiated
by the design engineer using updated flow data provided by the Monroe
County Water Authority.
(3)
All water mains shall be located in an easement adjacent
to the highway right-of-way.
(4)
All water mains shall be a minimum of eight inches
except:
(a)
Where mains are part of a major transmission
distribution network, the Town may require a larger size main.
(b)
Where project demands allow a smaller main while
still providing adequate fire and domestic flows. In no case will
the Town accept for dedication a main smaller than six inches in diameter.
B.
Hydrants. Hydrants shall be spaced at a maximum five-hundred-foot
intervals.
C.
Valves.
(1)
Valves shall be located such that no more than 20
dwelling units and no more than two hydrants need be out of service
for repair of a water main. Valves shall generally be provided at
intersections and shall be no more than 1,000 feet apart along the
water main.
(2)
Additional valves shall be required at creek and/or
railroad crossings depending on network configuration and permit requirements.
D.
Dead-end mains. Provide a hydrant unit, gate valve
and two-inch blowoff units at the end of all "dead end" mains.
E.
Water services. Provide minimum of one-inch water
service to the right-of-way line of all individual lots, or where
an easement is provided, the service shall extend to the easement
line. All services under dedicated roads shall be Type K virgin copper
without line couplings. All direct services from the water main to
the curb box shall be Type K copper.
F.
Meter pits (for individual services). Meter pits may
be installed when the water service length is greater than 250 feet
from the center line of a given road. All services from the water
main to the meter pit shall be Type K copper; PVC may be utilized
from the meter pit to the unit. Remote read receptions shall be placed
outside the pit area.
A.
General.
(1)
The finished grading on developed lands shall provide
for the effective removal of stormwater runoff to a drainage system.
(2)
In general, the design engineer shall try to establish
a finished grade at the structure line to permit a minimum of 2.0%
grade away from the structure to the drainage system.
(3)
Drainage shall generally be to side or rear lot swales,
provided:
(a)
Swales are of a proper cross-section to permit
ease of maintenance by the individual owner.
(b)
Easements are provided for access and/or maintenance
where necessary.
(c)
Finish grade at right-of-way line shall be not
more than two feet above finish grade at center line and the driveway
slope within the lot shall not be greater than 12%. A leveling area
of 3% maximum grade adjacent to the right-of-way shall be provided
which is a minimum of 30 feet in length from the edge of the street
pavement.
(d)
Where multi-lot grading is proposed, all swales
required for positive drainage will be installed prior to the issuance
of a building permit.
B.
Grading plan. A grading plan shall be submitted, with
the final plan for any development, showing at a minimum the following
items:
(1)
Existing contours.
(2)
Proposed finish contours.
(3)
Spot elevations of proposed finish grades at key locations.
(4)
Garage floor elevations.
(5)
Minimum elevations of any architectural opening where
flood hazard areas exist.
(6)
Culvert invert elevations.
(7)
All elevations shall be established from USGS datum
and the plan shall show a site benchmark.
B.
C.
Each of these roads has basic characteristics, which
may be varied to be consistent with unique proposals of development
and construction. The individual variations of the conditions will
not be permitted if they sacrifice design safety or maintenance of
a proposed road type. Standard roads shall comply with the typical
cross sections shown on Appendixes O and P.[1]
[1]
Editor's Note: Appendixes O and P are included at the end
of this chapter.
B.
Horizontal alignment. The following factors shall
be incorporated into the design of each road type:
(1)
Sight distance must conform to minimum safe stopping
sight distance per Geometric Design of Highways and Streets, AASHTO,
Latest Edition.
(2)
Clear sight at intersections.
(3)
Center-line intersection angles shall be 90° whenever
possible. No center-line intersection angles shall be less than 75°.
(4)
Minimum center-line radius of 150 feet.
(5)
Road pavement intersections shall have a minimum of
thirty-five-foot radius.
(7)
Access to future developments will be provided to
property lines.
(8)
Tangent sections shall be used between curves to maintain
the proper flow of traffic at design speeds.
C.
Vertical alignment. The minimum length of vertical
curves shall be based upon current AASHTO policy covering selection
of vertical curve length based upon stopping sight distance, passing
sight distance, riding comfort, and headlight sight distance. Vertical
curves are required whenever changes in grade exceed 1%.
E.
Leveling areas. Leveling areas shall be incorporated
at all intersections for a minimum distance of 100 feet from the edge
of the pavement and the grade shall not exceed 3%.
F.
Road widths.
|
Class
|
Minimum Pavement Width
(feet)
|
Edge Treatment
|
Drainage
| |
|---|---|---|---|---|
|
Private
|
15
|
Roadside swales
| ||
|
Residential dedicated road
|
22
|
30-inch concrete gutters or concrete curb or
4-foot shoulders
|
Underground conduit or roadside swales
| |
|
Commercial industrial dedicated road
|
24
|
30-inch concrete gutters or five-foot shoulders
or concrete curb
|
Underground conduit or roadside swales
|
G.
Special considerations.
(1)
Roadside swale. Where grades exceed 5% and/or unstable
soil conditions warrant, the swales shall be designed to control flow
velocities.
(2)
Underdrains are required under all curbs and gutters.
The developer will be required to install underdrains. The method
used shall be subject to the review and approval of the Town Engineer
and the Superintendent of Highways.
(3)
Clearances. Immovable fixed objects shall be set back
from the edge of travel lane a minimum of 30 feet.
A.
General requirements.
(1)
The design engineer shall consider the proposed use
of the road when preparing a road design. The following criteria is
listed as minimum standards to be considered by the designer. It is
the intent of these requirements to obtain a road and a base that
is stable and capable of supporting HS-25 loading to the sites. All
roads shall require the installation of underdrains. The method used
shall be subject to review and approval of the Town Engineer and Highway
Superintendent.
(2)
The Town Superintendent of Highways reserves the right
to order changes in the design, materials and depths due to any unforeseen
or unusual ground conditions.
B.
Minimum design standards.
(1)
Private.
(a)
Mirafi 500X soil stabilization fabric in all
areas of unstable subgrade as required by the Town Engineer.
(b)
One six-inch lift of No. 2 and No. 3 crushed
stone mixed equally.
(c)
One three-inch lift of crusher-run stone, Type
1 subbase course (NYSDOT Specification 304.02).
(d)
Top dressing: No. 0 and No. 1 crushed stone,
or No. 1 crushed stone and stone dust, compacted to produce a smooth
and uniform surface.
(2)
Residential.
(a)
Mirafi 500X soil stabilization fabric or equal
as required by Town Engineer or Highway Superintendent.
(b)
Three six-inch lifts of crusher run stone, Type
2 subbase course (eighteen-inch compacted thickness) (NYSDOT Specification
304.03).
(c)
Three-and-one-half-inch compacted thickness
asphalt concrete binder course Type 3 (NYSDOT Specification 403.130001M).
(d)
One-and-one-half-inch compacted thickness asphalt
concrete top course Type 7F (NYSDOT Specification 403.190001M).
(3)
Commercial/industrial.
(a)
Mirafi 500X soil stabilization fabric or equal
as required by Town Engineer or Highway Superintendent.
(b)
Three six-inch lifts of crusher run stone, Type
2 subbase course (eighteen-inch compacted thickness) (NYSDOT Specification
304.03).
(c)
Four-inch compacted thickness asphalt concrete
base course Type 1 (NYSDOT Specification 403.110001M).
(d)
Three-inch compacted thickness asphalt concrete
binder course Type 3 (NYSDOT Specification 403.130001M).
(e)
One and 1/2 inch compacted thickness asphalt
concrete top course Type 7F (NYSDOT Specification 403.190001M).
C.
Note: All depths are compacted thicknesses.
D.
Driveways. All driveway aprons shall match the type
of construction from the edge of the pavement to the ROW line. Reference
Appendix Z.[1]
[1]
Editor's Note: Appendix Z is included at the end of this chapter.
A.
Shall be provided along existing road frontage lots
to properly convey roadside drainage. The culverts shall be installed
to the proper grade to allow the natural flow of water. All culverts
installed shall be subject to the review of the Superintendent of
Highways having jurisdiction on the road.
B.
Minimum of twelve-inch diameter unless they are a
part of a larger drainage course which may require larger diameter
pipes.
C.
The culverts shall extend a minimum of five feet beyond
the edge of the access driveway and be provided with end sections.
Culverts shall have a minimum length of 30 feet. The slope from the
driveway to the culvert end section shall be graded and seeded to
maintain the slope stability.
D.
Elevations to be set by USGS datum.
E.
Culverts shall have a minimum of 12 inches of cover.
[1]
Editor's Note: See Appendix BB, which is included at the end
of this chapter.
Where required by the Planning Board, sidewalks
shall be concrete per Appendix DD.[1]
[1]
Editor's Note: Appendix DD is included at the end of this
chapter.
Monuments per shall be located at:
A.
Point of curvature (PC) and Point of tangency (PT)
of all horizontal curves along one side of the right-of-way.
B.
Maximum of 1,000 feet along one side of right-of-way
line.
[1]
Editor's Note: See Appendix V, which is included at the end
of this chapter.
Where land areas are reserved for future connections
to adjacent parcels, all improvements, i.e., sanitary, storm, water,
roads, will be constructed to the common property line.
