A.
No grading shall occur within two feet of any property or street
right-of-way line.
B.
Excavation of earth materials during grading shall result in a finished
grade not in excess of one-foot vertical rise to each 1 1/2 feet
of horizontal run, provided no fill material is placed over undisturbed
soil in the disturbed area except topsoil, which shall immediately
be planted to prevent erosion. "Excavation" shall imply removal of
earth materials that have laid dormant for at least two years prior
to grading; in all other situations, earth materials shall be considered
as "fill."
C.
Placing of earth fill upon previously undisturbed soil shall result
in a finish grade not in excess of one-foot vertical rise to every
two feet of horizontal run.
D.
Fill slopes shall be keyed in to preexisting undisturbed earth and
well-compacted in layers not to exceed eight inches in thickness.
All vegetative cover shall be removed from area to receive fill before
fill is placed.
E.
The toe, or lowest edge of a slope, shall be either graded to a natural
existing drainageway or stormwater drainage system or provided with
a stormwater pipe draining to such a system or drainageway.
F.
Where a slope continues upward beyond the limits of grading, the
top of the graded area shall be protected from accumulation of stormwater
by a sloped bench and/or a collection pipe sloped to a drainage system
or drainageway.
G.
Slope areas shall be planted with erosion-resisting materials such
as hardy grasses, shrubs, etc., immediately upon completion of grading
work.
H.
Where soil conditions apparently will permit steeper grades without sacrificing the stability of the graded slopes and areas the slopes support, the developer, if he chooses to employ steeper slopes than allowed in Subsections B and C above, shall present to the Zoning Officer a report prepared by a registered professional engineer, bearing his Pennsylvania seal, testifying that the soil conditions in the area to be developed will tolerate grades up to a maximum slope established by the said engineer. In the event the developer proposes to utilize retaining walls, he shall keep them two feet from any property or street right-of-way line and shall provide drainage above the wall and at its toe as required in Subsections E and F above. The Planning Commission may require a wall or fence be provided along the top of a retaining wall if a dangerous condition will exist.
I.
Any proposal for the development of a property shall indicate the
grading by cross sections through the property at critical locations,
indicating existing and proposed grades and noting percentages of
slopes. For retaining walls, working drawings and specifications shall
be required, showing foundations, cross sections, reinforcing, drainage
and soil conditions below and behind the wall. The Zoning Officer
shall not approve any development proposal until he is satisfied that
the proposed grading will not exceed the requirements of this section.
A.
Stormwater shall not be permitted to collect upon any property, nor
to flow from one property across another without benefit of an easement,
nor from any property across a public street. This subsection shall
not prevent a property owner from directing stormwater to the gutter
in a curbed street adjacent to his property nor shall it supersede
any existing drainage conditions or arrangements present at the time
of adoption of this chapter.
B.
The maximum storm of record over a twenty-four-hour period during
the preceding 50 years shall be the design condition to be used in
developing the storm drainage system.
C.
Solutions to drainage problems shall take into account areas upstream
of the property under development and shall prevent passage of any
eroded materials downstream from the property.
D.
Any proposal for the development of a property shall indicate the
means of collection and disposal of stormwater, and the Zoning Officer
shall not approve any proposal until he is satisfied adequate drainage
is provided, including easements if needed.
