The following improvements, to be constructed
consistent with good building practice, shall be made by the developer
without cost to the Town.
A.
Stumps, brush, roots, bolders, trees, and like material
shall be removed as necessary to provide for paving, shoulders, and
utilities, but, wherever feasible, existing vegetation shall be protected.
B.
All materials not suitable for the foundation shall
be removed from an area three feet wider than the paved width and
to a depth of at least 16 inches below finished grade. In that area,
peat, silt, loam or similar yielding material shall be removed to
leave a firm foundation. No loam suitable for reuse shall be removed
from the subdivision unless adequate loam will remain or is otherwise
assured to provide all disturbed areas within the subdivision with
a loam depth of at least six inches, and also there is assurance that
all streets from which loam is being removed will be brought to subgrade
with approved materials within six months.
C.
No slopes resulting from grading of streets shall
exceed one foot vertical to three feet horizontal in fill, one foot
vertical to two feet horizontal in cut, or one foot to 3/4 foot in
ledge. Slope easements or retaining walls shall be employed where
slopes cannot be contained within street side lines. Land between
the outside of the layout and the street pavement, and driveway entrances,
shall be so graded as to prevent surface water on the street from
draining onto private land except at designated ponding areas (see
cross section).
D.
Traveled ways shall be provided with a foundation
consisting of at least 12 inches or more as required by the Director
of Public Works compacted in six-inch lifts (layers) of good binding
gravel satisfactory to the Director of Public Works, clean, free of
organic matter, and containing no stones over three inches in diameter.
The material shall be thoroughly watered (if necessary) and rolled
true to line and grade to conform to the typical street cross section
and the street profiles. Any depressions that occur, either during
or after rolling, must be filled with additional gravel and rolled
until the surface is true and even.
E.
The wearing surface of roadways and driveways within
the right-of-way shall be a two-course Type I-1 bituminous concrete
pavement, applied with a three-inch (after compaction) base course
and a one-inch (after compaction) finish course, after the roadway
has been subjected to traffic for a time specified by the Director
of Public Works.
F.
Traveled way width.
(1)
The traveled way width, exclusive of curbing, shall
be as follows:
|
With Parking
|
Without Parking**
| ||||
|---|---|---|---|---|---|
|
Mountain
|
Plain
|
Mountain
|
Plain
| ||
|
Lane
|
16 feet
|
22 feet
|
14 feet
|
20 feet
| |
|
Minor Street
|
20 feet
|
26 feet
|
16 feet
|
22 feet
| |
|
Collector Street
|
24 feet
|
30 feet
|
20 feet
|
28 feet
| |
|
** All dwellings set back 75 feet or more from
the right-of-way, or parking bays provided at each dwelling.
|
(2)
The traveled way shall be located as shown on the
approved cross section.
Molded bituminous berms or paved gutters shall
be installed wherever pavement grade exceeds 6% or elsewhere where
required by the Board to control drainage. Berms, where used, shall
be placed directly on the base course.
A.
Sidewalks and footpaths required under § 201-11A(11) shall be constructed four feet in width and bicycle paths six feet in width.
B.
Surfacing of paths and sidewalks shall continue the
material of connecting paths or, where such do not exist, shall be
either three-inch dense-type I-1 bituminous concrete pavement laid
in two one-and-one-half-inch courses on six-inch gravel foundation
or other material specifically approved by the Board.
A.
Water systems.
(1)
When connection to the Adams Fire District system
is possible, a complete water system shall be installed, including
mains, gates, valves, and hydrants, consistent with the specifications
and pipe size requirement of the Adams Fire District and as shown
on the approved street plans.
(2)
Before making connection to the Adams Fire District
water system, the developer shall agree to comply with all appropriate
regulations of the Adams Fire District.
B.
Sewage disposal.
(1)
Common sanitary sewers within the subdivision shall
be installed under the supervision of and in accordance with the requirements
of the Adams Sewer Commission.
(2)
Design and installation of such individual or private
sewerage systems shall be under the supervision of the Board of Health
in strict compliance with Title V of the State Environmental Code.
C.
Stormwater management system. A complete stormwater
management system shall be installed as shown on the street plans
and profiles and as follows:
(1)
Piping shall be concrete unless asphalt-protected
16-gauge corrugated metal is approved by the Board. Piping with less
than 18 inches of cover shall be of reinforced concrete.
(2)
Catch basins and manholes as shown for typical street
cross sections shall be at least six feet deep and four feet in diameter
(inside measurements), constructed of concrete blocks with least two
three-inch weepholes with galvanized one-fourth-inch wire mesh covers
and 1/4 yard of crushed stone drainage per weephole. Leaching basins
shall be backfilled for at least one foot around all sides with one-and-one-half-inch
washed stone, topped with pea stone, and shall be cross-connected
with twelve-inch drainpipe.
(3)
Open brooks or tributary ditches which are to be altered
shall be shaped to a cross section and gradient and provided with
stream bottom hardening and riprap if necessary, all acceptable to
the Board.
(4)
Subdrain. At the option of the Director of Public
Works, a six- or eight-inch perforated metal pipe shall be installed
in a two-foot by four-foot deep trench with a six-inch bed of one-half-inch
crushed stone covered by 3 1/2 feet of crushed stone and connected
to the storm drain system
D.
Cable utilities; streetlights. All cable utilities
shall be installed. Installation of streetlights may be required by
the Planning Board as necessary for the safety of the inhabitants
of the neighborhood.
A.
Boundary markers. Boundary markers shall be installed
at all street intersections, at all points of change in direction
or curvature of streets and at other points where, in the opinion
of the Board, permanent bounds are necessary, but in any event not
spaced further than 500 feet apart. Such monuments shall be granite,
not less than 30 inches long and five inches square, with dressed
top and a one-half-inch drill hole in the center, and shall be set
to finish grade, or a drill hole and pin in ledge.
B.
Street signs. Street signs of a design and material
acceptable to the Director of Public Works shall be installed for
each street at each intersection.
C.
Planting.
(1)
Every effort shall be made to preserve and protect
existing vegetation.
(2)
The subdivider may be required to plant trees where
necessary, in view of existing vegetation, to assure amenity for the
future residents of the proposed subdivision. Before the trees are
planted, a plan showing their proposed location and species, based
on avoidance of problems from pests, disease, or root intrusion, shall
be submitted to the Planning Board for approval. Up to one tree of
two-inch caliper each 40 feet of street side line may be required.
Trees to be retained shall not have grade changed over their root
areas more than 12 inches.
(3)
All unpaved areas within the street layout shall be
stabilized with retained vegetation, topsoil and plot grass, well
rooted low-growing plantings, bark, or other organic materials acceptable
to the Board.
D.
Cleaning up. Before sale of a lot, the subdivider
shall clean up any debris thereon caused by street construction and
installation of utilities.
E.
Fee (title) to ways. The following shall be observed
unless waived by the Planning Board for subdivisions where the public
interest is served by retention of private ways and means of assuring
such retention have been agreed upon. The subdivider shall retain
title to the fee of each street or path in the subdivision until conveyed
to the Town or for three years, whichever is the lesser. Notation
that this is to be done shall be placed upon the definitive plan.
F.
Record plans.
(1)
Upon completion of construction, and before release
of the performance guarantee, the subdivider shall have prepared and
shall submit record plans, which shall indicate the actual location
of the following:
(2)
The accuracy of such record plan shall be certified
by a registered professional land surveyor.
G.
Certification. A professional civil engineer retained
by the developer shall certify that all construction was executed
in conformance with the subdivision regulations and with all requirements
agreed upon as a condition to plan approval.
