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 dimensional requirements of Chapter
425, Zoning;
B. The standards set forth in this Part 4; and
C. All other applicable ordinances.
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:
A. Driveways shall be in compliance with Chapter
425, Zoning, §
425-84.
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.
(5) Driveway entrances and drainage pipes shall be designed
and constructed in accordance with the technical drawings shown in
Schematics 1.1, 1.2 and 1.3 attached hereto.
(6) As described in Subsection
B(1) of this section, a shallow open swale across the driveway may suffice instead of a pipe.
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.
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. 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.
[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.
Where construction or reconstruction of a driveway to an existing dwelling unit is involved, such construction or reconstruction of the driveway entrance shall comply with the standards set forth in this Part
4, even if no site development plan is required under §
395-29 of this Part
4.
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.
B. Typical Driveway Pipe Installation: Schematic 1.2.
C. Typical Driveway Pipe Installation, Plan View: Schematic
1.3.