The purpose of this chapter is to regulate modification
of natural terrain and alteration of drainage by providing for certain
runoff erosion and sediment control measures within Borough of Malvern
(the "Borough") to protect public health, safety and welfare. This
chapter shall be known and may be cited as the “Malvern Borough
Soil Erosion, Sedimentation and Grading Control Ordinance.”
It implements Title 25, Rules & Regulations, Part I, Commonwealth
of Pennsylvania, Department of Environmental Resources, Subpart C,
Protection of Natural Resources, Article 11, Water Resources, Chapter
102, Erosion Control.
Whenever the topography and vegetation are to
be disturbed a plan for the control of erosion and sediment is required.
A. It shall be unlawful for any person, firm or corporation
to pave, fill, strip, or change the existing grade of any land within
the Borough without first securing a permit.
B. It shall be unlawful for any person, firm or corporation
to disturb, modify, block, divert or affect the natural overland or
subsurface flow of stormwater within the Borough without first securing
a permit.
C. It shall be unlawful for any person, firm or corporation
to construct, erect or install any dam, ditch, culvert, drain pipe,
bridge or any other structure or obstruction affecting the drainage
of any premises in the Borough without first securing a permit.
D. Whenever the topography or vegetation is to be disturbed and the proposal involves less than one acre, a permit shall be required, subject to Subsection
E of this section, but no fee shall be payable.
E. Notwithstanding the prior provisions of this section,
no permit shall be required hereunder for (1) any activity for which
a permit must be obtained from any agency of the Commonwealth of Pennsylvania;
(2) normal agricultural operations; or (3) any developed residential
lot where the following conditions are met: the aggregate area disturbed
at one time does not exceed 5,000 square feet; the grade level is
not changed to any extent which substantially alters the direction,
or increases the rate, of runoff in such area; and all bare earth
is promptly seeded, sodded or otherwise effectively protected from
erosion.
The application for a permit shall be accompanied
by a plan of the property showing:
A. An area plan, or plans, describing existing and proposed
features of the area surrounding the site of the work, including topography,
existing vegetation, watercourses, man-made features, the affected
watershed and other pertinent natural features. This may be in the
form of a recent USGS map with the property and required features
located thereon.
B. A topographical survey of the site, at a suitable
scale of no less than 1" = 50' and contour interval of no more than
2'-0", prepared by a registered surveyor or registered engineer, including
also a boundary line survey, the location and description of vegetative
cover, soil types (available from Chester County Soil Conservation
District) and any other pertinent existing natural or man-made features.
C. An improvements plan at the same scale as Subsection
B showing and describing all changes to the site including cuts, fills, structures, paving and utilities. (This may be combined with Subsection
B on simple projects).
D. A written description of soil erosion and sediment control measures (with appropriate plans and specifications), in accordance with standards and specifications of the USDA Soil Conservation District and Borough ordinances, including, without limitation, retention basins or other control measures necessary to limit the rate of stormwater runoff to comply with the requirements of §
97-5C hereof.
E. A time schedule indicating the anticipated starting and completion dates of the development sequence, the expected date of completion of construction of each of the measures referred to in Subsection
D of this section and the time of exposure of each area prior to the completion of such measures.
When the area of site to be disturbed exceeds
one acre, or when smaller sites are environmentally sensitive because
of the presence of watercourse or unusual drainage conditions, the
Borough Engineer may require any or all of the following additional
information. This information shall then be prepared by a registered
professional civil engineer, agronomist or other professional qualified
in hydrology:
A. A plan shall indicate present and proposed sources,
storage and disposition of water being channeled through or across
the site, together with elevations, gradients and maximum flow rates.
The application shall describe the work to be performed, the materials
to be used and the manner or method of performance, including provisions
for protecting and maintaining existing drainage facilities, whether
on public or private property.
B. Calculations to determine runoff shall be based on
the Soil-Cover Complex Method, which is available from the USDA Soil
Conservation Service, West Chester, or, if the applicant can demonstrate
the inappropriateness of such method, calculations may be based upon
other generally accepted and applicable engineering methods. The design
criteria for storm sewer piping, inlet systems retention basins, spillways,
culverts, swales and all related facilities shall be those published
by the USDA Soil Conservation Service and available at its office
in West Chester. The coefficient of runoff used for all areas upstream
of any drainage structure shall be computed on the basis of the projected
land use contained in the Borough Comprehensive Plan (when adopted).
C. The following provisions apply to the carrying and
disposal of stormwater runoff:
(1) All drainage facilities shall be designed in the most
practicable fashion to control surface water runoff in such a manner
as to prevent erosion and flooding. Such facilities shall be designed
to retard the rate of stormwater runoff to approximately the same
rate as that existing prior to construction of the project.
(2) The applicant shall agree to the granting and recording
of easements for drainage facilities, including acceptance of the
discharge of water from the property of others, provisions for maintenance
of slopes and swales, and access for the maintenance of anti-erosion
facilities.
D. If load-bearing fill is proposed, a soils investigation
report shall be submitted which shall consist of test borings, laboratory
testings and engineering analysis to correlate surface and subsurface
conditions with the proposed grading plan. The results of the investigation
shall include: data regarding the nature, distribution and supporting
ability of existing soils and rocks on the site; conclusions and recommendations
to ensure stable soil conditions, and ground water control, as applicable.
The Borough may require such supplemental reports and data as is deemed
necessary by the Borough Engineer.
(1) Fills toeing out on natural slopes steeper than four
horizontal to one vertical shall not be made unless approved by the
Borough Engineer after receipt of a report by a registered professional
engineer, qualified in soils analysis, certifying that he has investigated
the property and made soil tests and that, in his opinion, such steeper
slopes will safely support the proposed fill.
(2) Natural and/or existing slopes exceeding five horizontal
to one vertical shall be benched or continuously stepped into competent
materials, as determined by the Borough Engineer, prior to placing
all classes of fill.
The Borough Engineer shall approve and issue
all permits in letter form.
A fee of $50 is required upon initial submission of an application under this chapter, except as provided by §
97-2D. Cost of all inspections (other than initial inspection and the final inspection) will be billed to the applicant as inspections are completed, at the rate of $25 per inspection. Payments shall be made within 30 days, and no occupancy permit will be issued until all payments have been made. If the applicant has paid a fee under another Borough ordinance which is applicable to the requirements of this chapter, such as the Subdivision and Land Development Ordinance, the Zoning Officer may waive any or all of the fees under
this chapter as he determines to be equitable. If an application involves
less than one acre no fee will be required.
Any permit issued under this chapter may be
revoked or suspended by the Borough Council of the Borough after notice
for:
A. Failure to carry out the control measures described
in the application at the appropriate times as specified in the applicable
time schedule or within such reasonable extension as may be granted
by the Borough Engineer;
B. Violation of any other condition of the permit;
C. Violation of any provision of this chapter or any
other applicable law, ordinance, rule or regulation relating to the
work; and
D. Existence of any condition or the doing of any act
constituting or creating a nuisance or hazard or endangering human
life or the property of others.
The Borough Engineer, before issuing a permit
for a project which exceed five acres, shall require corporate surety
bond in a form satisfactory to him conditioned upon the faithful performance
of the control measures and other conditions specified in the permit
within the time specified, or within any extension thereof granted
by the Borough Engineer in the amount of the total estimated cost
of all control measures and safeguards for adjoining properties. Said
bond may be combined with a bond filed under the Borough Subdivision
Ordinance. Each bond shall be maintained and renewed annually and
shall be executed by a surety or guaranty company qualified to transact
business in the state.
In case of any paving, filling, stripping, grading
or regrading; any disturbing, modifying, blocking or diverting the
natural overland or subsurface flow of stormwater; or any construction,
erection or installation of any dam, ditch, culvert, drain pipe, bridge
or any other struction or obstruction affecting the drainage of any
premises, in violation of this chapter, or any regulations made pursuant
thereto, the proper Borough authorities, in addition to other remedies
provided by law, may institute any appropriate action or proceedings
to prevent such unlawful activity; to restrain, correct or abate such
violation; to prevent the use of the applicable premises; or to prevent
any illegal act, conduct, business or use in or about such premises.
In addition, upon the failure of any permit holder to complete the
control measures specified in his application, the Borough may, after
revoking such permit, proceed to complete such measures itself, and
recover the cost thereof from the permittee or his surety.
If any section, subsection, paragraph, clause
or provision of this chapter shall be declared by a court of competent
jurisdiction to be invalid, such decision shall not affect the validity
of this chapter as a whole or in part.