Utility and street improvements shall be required in each new subdivision
or land development as follows, except that improvements are not required
in existing public streets which may be incorporated into, or be adjacent
to, the subdivision or land development:
C. Sanitary sewage conveyance.
D. Storm sewers outside of public streets.
E. Streets, including required grading, subgrade, preparation,
underdrains, base and paving.
F. Subgrade drains where necessary.
I. Seeding between the sidewalk and curb.
J. Required utilities, streetlighting, street name signs
and required grading.
K. Erosion control, as needed.
The construction of improvements shall be in accordance with the requirements
of this article. It is the intent of these regulations that all construction
requirements shall be for the purpose of establishing a standard of quality
and durability.
Survey monuments and markers shall be placed at all points as determined
by the following criteria:
A. Monuments shall be concrete with a 3/8 inch metal dowel
in the center at the top. Monument size shall be no less than four inches
by four inches by 30 inches.
B. Markers shall be ferrous metal pipe or rods, 1/2 inch
minimum diameter by 18 inches minimum length or may be standard manufactured
steel survey markers of similar length.
C. Monuments shall be placed so that the center point shall
coincide exactly with the intersection of lines to be marked.
D. Monuments shall be placed so that they protrude approximately
two inches above grade in areas which are not paved, at grade if in a paved
area not subject to vehicle traffic, and four inches to eight inches below
grade if in a paved area subject to vehicle traffic. Monuments set in areas
subject to traffic shall be protected with a cast iron frame and access cover
of adequate design for truck traffic.
E. Markers shall be driven into the ground so as to be approximately
flush with the final grade.
F. Monuments shall be set at the intersection of all lines
forming angles in the boundaries of major subdivisions or land developments
and at all street angle points, and at the intersection of all street center
lines.
G. Markers shall be set at all lot angles and corners, and
at the beginning and end of all curves in lot and street lines. Curves for
corner radii at intersection need not be marked if the intersection is monumented.
Gas, electric and telephone utilities shall be located in subdivisions
or land developments in accordance with utility company practice and in accordance
with agreements with, or as approved by, the Township Engineer.
In wooded areas, floodplains, wetlands, areas having slopes of 25% or
greater where other natural conditions exist in such a manner that development
would be hazardous to the safety of life and property or would cause permanent
ecological instability, the Township may require that the developer preserve
as much of the original natural conditions as is ecologically practicable
and may limit the amount of grading and excavation to the minimum improvement
standards included herein.
It shall be a requirement of all major subdivisions or land developments
that the developer shall have a soil erosion and sedimentation control plan
and/or permit, prepared in accordance with current state law (Erosion and
Sedimentation Control, Chapter 102, Pennsylvania Rules and Regulations, as
amended), reviewed by the Allegheny County Conservation District and determined
to be adequate. The county may also require a like plan for any minor subdivision
or land developments. The plan shall be fully implemented during the construction
of the development.