[Adopted 2-15-1991 by Ord. No. 256 (Ch.
80, Part 4, of the 1992 Code)]
Any applicant for a building permit for new
construction of a dwelling or commercial unit shall submit a site
development plan demonstrating compliance with:
A.
The site development plan shall show elevations of
sufficient density or elevations and contours of sufficient vertical
displacement (no more than one-foot increments) to demonstrate the
planned final grading of the lot.
B.
The site development plan shall show a reference point
for elevations used for the drainage design (e.g., center line of
road opposite side property line or front property corner) sufficient
to allow verification that final grading has been completed in accordance
with that shown on the site development plan. Elevations will be referenced
to the sea level datum on a benchmark established the United States
Geological Survey or by NOAA.
C.
Drainage will be designed:
(1)
In accordance with the common law rule that a property
owner cannot unreasonably divert surface water onto abutting properties
to the detriment thereof.
(3)
To divert excess stormwater runoff to existing municipal/subdivision
drainage systems via open swales, tiled drains, culverts, ditches,
gutters and the like.
D.
Where drainage swales in public rights-of-way have been authorized in existing subdivisions (in lieu of curbs or gutters or both under Chapter 410, Subdivision of Land) or other properties, such drainage swales shall be constructed to a depth commensurate with the required gradient at that point.
A.
Commercial property abutting state or Town highways, streets and alleys shall include provision for site drainage. As a minimum, the site plan for the project shall show existing and proposed drainage features. The site plan will be subject to the same requirements and specifications as shown under § 395-30A, C(1) and (2) and D.
B.
Should existing drainage facilities be found inadequate
to accommodate new construction, the developer will be required to
control site drainage to predevelopment rates or otherwise construct
or reconstruct highway drainage facilities to accommodate the total
flow.
The site development plan shall show the placement
of residential driveways, whether connected to public streets or private
ways, in accordance with the following standards:
B.
Driveway construction will encounter a variety of
terrain conditions ranging from the flat no-system drainage conditions
in the eastern R-1 Zone to the swale system in the new developments.
To accommodate these varying conditions, the following options may
be used:
(1)
Typically, in the upper reaches of a drainage system,
at the top of the gradient where little runoff accumulates, and in
the older sections where only natural runoff prevails in the right-of-way,
driveways may be constructed with a shallow (four-inch to six-inch)
dip which will allow automobile passage and the uninterrupted flow
of water.
(2)
Subject to Subsection B(6), where a drainage system of swales, ditches, gullies, etc., exists, driveways shall include a drainage pipe crossing under the driveway, within the street right-of-way, at sufficient depth to protect it from damage from the weight of vehicles above.
(3)
The site development plan shall show the invert elevations
of both ends of the drainage pipe to demonstrate water flow commensurate
with adjacent water flow direction.
(4)
Drainage pipes shall be standard twelve-gauge corrugated
pipe not less than 12 inches in diameter; larger diameters may be
required when necessary in the Building Inspector's reasonable discretion.
C.
To prevent soil erosion into the drainageway, driveway
surfaces should be improved using crushed stone, gravel, paving or
other materials on the property; provided, however, that wherever
a driveway intersects with a drainage swale, culvert, ditch or the
like in the right-of-way, the surface of the driveway shall be paved
(e.g., macadam or asphalt) from the right-of-way/property line to
the improved street surface.
A.
Access to Town streets or state highways shall be
governed by this Part 4 and other Town ordinances except where inconsistent
with or preempted by state statutes or regulations.
B.
Frontage adjacent to a public street or highway shall
provide a landscaped buffer of not less than three feet in width designed
to identify points of entrance and exit sufficient to enable proper
and safe driving maneuvers for vehicles entering and exiting the property.
Buffer landscaping shall not exceed three feet in height.
C.
Commercial driveways shall have adequate base and
paved surface from a point not less than 10 feet inside the property
line to the improved portion of the public street or highway.
D.
Where two driveway entrances or exits from a single
property are less than 100 feet apart (measured at the shoulder line
of the traveled way), the shoulder area lying between the two driveways
shall be paved by the property owner. For purposes hereof, the term
"shoulder" means that area within a public right-of-way lying between
the traveled portion of the road and the property line which is graded,
cleared or otherwise maintained as an adjunct to the traveled way.
In the overall approach to stormwater management,
it is essential that flooding be stabilized at its current level as
systems are developed to resolve prior conditions. Therefore, site
preparation for new, single lot, residential construction will include
two or more of the following described techniques which are intended
to detain water on site:
A.
Construct a French drain adjacent to the foundation
of the house. (A "French drain" is a trench two to three feet wide
and three to four feet deep which is filled with gravel or crushed
stone.)
B.
Divert water from downspouts to a dry well on site.
C.
Connect downspouts to perforated plastic pipe buried
in the lawn area and emerging at a point away from the house.
Some major subdivisions were developed with
all lots graded and drained as shown on the final site plans and approved
by the Planning and Zoning Commission.[1] Final grading on single lots in these subdivisions may
not be altered. Only minor cosmetic landscaping will be allowed. The
Building Inspector should be consulted for details.
[1]
Editor's Note: Ordinance No. 527, adopted 11-18-2016, established
the Planning and Zoning Commission. Pursuant to this ordinance, references
throughout the Code to the “Planning Commission” have
been revised to the “Planning and Zoning Commission.”
[Amended 4-19-1991 by Ord. No. 258]
Except for new construction of dwelling or commercial
units commenced prior to February 15, 1991, no certificate of occupancy
shall be issued by the Town Building Inspector until compliance with
applicable provisions of this Part 4 regarding design and construction
have been met.
Property owners shall be under a continuing
duty of proper maintenance of driveway entrances and exits within
the right-of-way, including the driveway drainpipe passing under the
same.
Attached hereto and incorporated herein by reference
are the following:
A.
Without Highway Edge Curb: Schematic 1.1.[1]
[1]
Editor's Note: Schematic 1.1 is included at the end of this chapter.
B.
Typical Driveway Pipe Installation: Schematic 1.2.[2]
[2]
Editor's Note: Schematic 1.2 is included at the end of this chapter.
C.
Typical Driveway Pipe Installation, Plan View: Schematic
1.3.[3]
[3]
Editor's Note: Schematic 1.3 is included at the end of this chapter.
