A.
All regulated activities that do not fall under the exemption criteria
referenced herein shall submit a SWM site plan and report to the municipality
for review. These criteria shall apply to the total proposed development
even if development is to take place in stages.
B.
The following items shall be included in the SWM site plan:
(1)
Appropriate sections from the municipal SALDO[1] and other applicable ordinances shall be followed in preparing
the SWM site plans. In instances where the municipality lacks subdivision
and land development regulations, the county SALDO shall be followed.
(2)
The SWM site plan shall provide the following information:
(a)
Unless specifically given written permission by the municipality,
the following must be shown on the SWM site plan, prepared in a form
which meets the requirements for recording in the county office of
the Recorder of Deeds:
[1]
Annotated maps, drawings, engineering plans, and construction
details. Said plan shall be prepared by a qualified professional,
with said preparer's seal and registration number affixed to
the plan. Plans for tracts of less than 20 acres shall be drawn at
a scale of one inch equals no more than 50 feet; for tracts of 20
acres or more, plans shall be drawn at a scale of one inch equals
no more than 100 feet. Plans shall be submitted on the following sheet
sizes: 18 inches by 24 inches, 24 inches by 36 inches, or 36 inches
by 42 inches. All lettering shall be drawn to a size to be legible
if the plans are reduced to half size. All sheets comprising a submission
shall be on one size.
[2]
The name of the proposed development and the name and address
of the owner of the property and the individual or firm preparing
the plan.
[3]
Date of submission and revision, graphic scale, and North arrow.
[4]
Total tract boundary with distances marked to the nearest foot
and bearings to the nearest degree and the total acreage of the tract.
[5]
Key map (drawn to scale) showing all existing natural and man-made
features beyond the property boundary affected by the project and
the extent of the watershed or subbasin which drains through the project
site.
[6]
Existing and proposed topographic contours shall be provided
at intervals not greater than five feet for existing and proposed
conditions.
[7]
Topographic contours at intervals less than five feet may be
required for flat sites, and to depict certain existing and future
stormwater management features. The reference datum used to develop
topographic contours shall be stated on the plans.
[8]
Existing and proposed use, including the total area of impervious
surfaces after construction.
[9]
Location and selected plant material used for vegetative filter
paths to sinkholes, stream buffers, buffer yards, wetlands, streams,
and other waters of the commonwealth, and the location of all notices
to be posted, as specified in this chapter. If stormwater management
facilities are off site, a note on the plan referring to location
and agreements indicating responsibility for conveyance to and maintenance
of the facilities; all such off-site facilities shall meet the design
standards and criteria specified in this chapter, and details of the
facilities shall be included with the plan.
(b)
An erosion and sediment pollution control plan, as prepared
for and submitted to the County Conservation District.
(c)
Plan and profile, and construction detail drawings of all SWM
BMPs, including open channels and swales.
(d)
Locations of existing watercourses (including stream name per
PA DEP Chapter 93 designation, or otherwise noted as "unnamed tributary"
with Chapter 93 numeric designation) and existing and proposed on-lot
wastewater facilities, water supply wells, and infiltration areas.
(e)
Locations of all access and maintenance easements, suitable
for recording.
(f)
Signature blocks:
[1]
The following signature block for the municipality:
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"__________, on this date (date of signature), has reviewed
this SWM Site Plan in accordance with the design standards and criteria
of the applicable Municipal Ordinances."
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[2]
The following signature block for the qualified professional:
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"__________, on this date (date of signature), hereby certify
that this SWM Site Plan was prepared in strict accordance with all
of the design standards and criteria of all applicable Municipal Ordinances."
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[3]
The following signature block for the applicant/owner:
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"__________, on this date (date of signature), has acknowledged
that I/we and/or my/our assignees/grantees shall be responsible for
maintenance of the stormwater management system shown hereon, in accordance
with approved stormwater management ownership and maintenance plan
for this project, and that such stormwater system shall remain as
a permanent fixture that cannot be altered, replaced, or removed without
prior written approval from the Municipality."
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(g)
A note indicating that a copy of the recorded record drawings
will be submitted to the municipality by the applicant's registered
engineer or surveyor for all stormwater facilities prior to occupancy,
or the release of the surety bond. The municipality reserves the right
to authorize the Municipal Engineer to review said record drawings.
C.
The following items shall be included in the SWM report:
(1)
The overall stormwater management concept for the project.
(2)
A determination of site conditions in accordance with Appendix B.[2] A detailed site evaluation shall be completed for projects
proposed in areas of carbonate geology or karst topography, and other
environmentally sensitive areas such as brownfields.
[2]
Editor's Note: Appendix B is on file in the Borough offices.
(3)
Stormwater runoff design computations and documentation as specified in this chapter, or otherwise necessary to demonstrate that the maximum practicable measures have been taken to meet the requirements of this chapter, including the recommendations and general requirements in § 203-11. All calculations shall be submitted to the municipality on computation sheets for approval. If the municipality determines through review and independent computation that the size(s) of stormwater management facilities is insufficient, the municipality may require the applicant to increase the size(s) of said stormwater management facilities. If the storm drainage system design is completed on a computer installation, sufficient supporting data shall be provided to allow comprehensive review by municipal officials.
(4)
Expected project construction schedule.
(5)
The effect of the project (in terms of runoff volumes and peak flows)
on adjacent properties and on any existing municipal stormwater collection
system that may receive runoff from the project site.
(6)
Copies of all permits and applications (where required) by the Pennsylvania
Department of Environmental Protection, Pennsylvania Department of
Transportation (PA DOT), and U.S. Army Corps of Engineers (USACOE)
and other regulatory agencies.
(7)
The SWM site plan shall include an operation and maintenance (O&M)
plan for all existing and proposed physical stormwater management
facilities. This plan shall address long-term ownership and responsibilities
for operation and maintenance as well as schedules and costs for O&M
activities.
(8)
Hydrologic and hydraulic computations for all existing and proposed
stormwater management facilities and measures.
(9)
Construction specifications for SWM BMPs and storm drainage systems.
(10)
Each stormwater management report shall contain provisions that
clearly set forth the ownership and maintenance responsibility of
all permanent stormwater management and erosion and sediment control
facilities, including:
(a)
Description of maintenance requirements.
(b)
Establishment of suitable easements for access to all facilities
by public officials, in accordance with this article.
(c)
Identification of the responsible party or entity for ownership
and maintenance of both temporary and permanent stormwater management
facilities. In meeting this requirement, the following options are
hereby provided for upon approval by the municipality:
[1]
Facilities may be incorporated within individual lots so that
the respective lot owners will own and be responsible for maintenance
in accordance with recorded deed restriction. A description of the
facility or system and the terms of the required maintenance shall
be incorporated as part of the deed to the property.
[2]
Ownership and maintenance may be the responsibility of a property
owners' association. The stated responsibilities of the property
owners' association in terms of owning and maintaining the stormwater
management facilities shall be submitted with final plans for determination
of their adequacy, and upon their approval shall be recorded with
the approved subdivision plan among the county deed records. In addition,
the approved subdivision plan and any deed written from said plan
for a lot or lots shown herein shall contain a condition that it shall
be mandatory for the owner or owners of said lot to be members of
said property owners' association.
(d)
For stormwater management facilities that are proposed as part
of the site development plan, the applicant will be required to execute
a developer agreement and a maintenance agreement with the municipality
for the construction and continued maintenance of the facilities prior
to the signature approval on the final plan. Access for inspection
by the municipality of all such facilities deemed critical to the
public welfare at any reasonable time shall be provided.
(e)
In the event the above priorities cannot be achieved, or where
it is required, the facilities may be dedicated to the municipality
in accordance with this chapter. As a condition of municipality acceptance
of said facilities, the applicant shall provide 30% of the cost of
improvements, in the form of a maintenance bond, as estimated by the
applicant's qualified professional, and approved by the municipality,
to cover contingency maintenance costs for 18 months from the date
of stormwater management facilities acceptance of dedication. The
thirty-percent bond shall be based on the construction costs of the
detention basin and outlet structure within the area dedicated to
the municipality.
(11)
Example report sections:
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Introduction
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Existing Site Conditions
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Models
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Existing Soils Information
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Volume Mitigation
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Description And Background Information
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Peak Rate Mitigation
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Description And Background Information
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Pre-Development Conditions
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Post-Development Conditions
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Stormwater/Detention Basin Hydraulics
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Storm Drain Design
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Peak-Rate Mitigation Results
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Effect of Project on Adjacent Properties
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Expected Project Construction Schedule
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Ownership and Maintenance
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Appendices
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Volume Mitigation Calculations, Worksheets And Information
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Peak Rate Mitigation Calculations And Information
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Water Quality Worksheets And Information
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Precipitation Source Data
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SCS Runoff Curve Numbers, Rational Runoff Coefficients, Manning's
coefficients
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Miscellaneous Computations
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Infiltration Rate Test Data
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General References
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Construction Specifications for SWM BMPs
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A.
The SWM site plan shall be reviewed by a qualified professional for
the municipality for consistency with the provisions of this chapter.
After review, the qualified professional shall provide a written recommendation
for the municipality to approve or disapprove the SWM site plan. If
it is recommended to disapprove the SWM site plan, the qualified professional
shall state the reasons for the disapproval in writing. The qualified
professional also may recommend approval of the SWM site plan with
conditions and, if so, shall provide the acceptable conditions for
approval in writing. The SWM site plan review and recommendations
shall be completed within the time allowed by the municipalities Planning
Code[1] for reviewing subdivision and land development plans.
[1]
Editor's Note: See 53 P.S. § 10101 et seq.
B.
The municipality shall notify the applicant in writing within 45
calendar days whether the SWM site plan is approved or disapproved.
If the SWM Plan involves a subdivision or land development plan, the
notification period is 90 days. If a longer notification period is
provided by other statute, regulation, or ordinance, the applicant
will be so notified by the municipality. If the municipality disapproves
the SWM Plan, the municipality shall cite the reasons for disapproval
in writing.
C.
The municipality's approval of a SWM site plan shall be valid
for a period not to exceed five years. This five-year period shall
commence on the date that the municipality signs the approved SWM
site plan. If stormwater management facilities included in the approved
SWM site plan have not been constructed, or if a record drawing of
these facilities has not been approved within this five-year time
period, then the municipality may consider the SWM site plan disapproved
and may revoke any and all permits. SWM site plans that are considered
disapproved by the municipality shall be resubmitted in accordance
with this chapter.
A modification to a submitted SWM site plan that involves a change in SWM BMPs or techniques, or that involves the relocation or redesign of SWM BMPs, or that is necessary because soil or other conditions are not as stated on the SWM site plan as determined by the municipality, shall require a resubmission of the modified SWM site plan in accordance with this article. The SWM Plan review process shall start over as stated under § 203-21.
A disapproved SWM site plan may be resubmitted, with the revisions
addressing the municipality's concerns, to the municipality in
accordance with this article. The applicable review fee must accompany
a resubmission of a disapproved SWM site plan.
A.
The applicant/developer shall be responsible for completing record
drawings of all SWM BMPs included in the approved SWM site plan. The
record drawings and an explanation of any discrepancies with the design
plans shall be submitted to the municipality.
B.
The submission shall include a signed statement from a qualified
professional verifying that all permanent SWM BMPs have been constructed
according to the plans and specifications and approved revisions thereto.
C.
After receipt of the signed statement and the record drawings by
the municipality, the municipality may conduct a final inspection.
