For any of the activities regulated by this Part 9 and not eligible for the exemptions provided in §
9-903.2, the final approval of subdivision and/or land development plans, the issuance of any building or occupancy permit, or the commencement of any land disturbance activity, may not proceed until the applicant has received written approval of a SWM site plan from the City of Harrisburg.
The SWM site plan and SWM site report shall consist of all applicable
calculations, maps, and plans. All SWM site plan materials shall be
submitted to the City of Harrisburg in a format that is clear, concise,
legible, neat and well organized; otherwise, the SWM site plan shall
be rejected. Appropriate sections from the Municipal Subdivision and
Land Development Ordinance, and other applicable local ordinances, shall be followed
in preparing the SWM site plan.
A. SWM site plans shall include (but not be limited to):
(1)
Plans on sheets no larger than 24 inches by 36 inches and in
a form that meets the requirements for recording in the office of
the Recorder of Deeds of Dauphin County.
(2)
The name of the development; name and location address of the
property site; name, address, and telephone number of the applicant/owner
of the property; and name, address, telephone number, e-mail address,
and engineering seal of the individual preparing the SWM site plan.
(3)
The date of submission and dates of all revisions.
(4)
A graphical and written scale on all drawings and maps.
(5)
A North arrow on all drawings and maps.
(6)
A location map at a minimum scale of one inch equals 1,000 feet.
(7)
Metes and bounds description of the entire tract perimeter.
(8)
Existing and final contours at intervals of two feet.
(9)
Existing water bodies within the project area, including streams,
lakes, ponds, field-delineated wetlands or other bodies of water,
sinkholes, flood hazard boundaries (FEMA-delineated floodplains and
floodways), areas of natural vegetation to be preserved, the total
extent of the upstream area draining through the site, and overland
drainage paths.
(10)
The location of all existing and proposed utilities, on-lot
wastewater facilities, water supply wells, sanitary sewers, and water
lines on and within 50 feet of property lines.
(11)
A key map showing all existing man-made features beyond the
property boundary that may be affected by the project.
(12)
Soil names and boundaries with identification of the Hydraulic
Soil Group classification.
(13)
The proposed limit of disturbance line and associated proposed
disturbed acres.
(14)
Proposed structures, roads, paved areas, and buildings, including
plans and profiles of roads and paved areas and floor elevations of
buildings.
(15)
Horizontal alignment, vertical profiles, and cross-sections
of all open channels, pipes, swales and other BMPs.
(16)
The location and clear identification of the nature of permanent
stormwater BMPs.
(17)
The location of all erosion and sedimentation control facilities.
(18)
A minimum twenty-foot-wide access easement around all stormwater
management facilities that would provide ingress to and egress from
a public right-of-way. In lieu of providing an easement to the public
right-of-way, a note may be added to the plan granting the City of
Harrisburg or its designees access to all easements via the nearest
public right-of-way.
(19)
Construction details for all drainage and stormwater BMPs.
(20)
Construction details of any improvements made to sinkholes.
(21)
Identification of short-term and long-term ownership, operations,
and maintenance responsibilities.
(22)
Notes and statements:
(a)
A statement, signed by the landowner, acknowledging that the
stormwater BMPs are fixtures that cannot be altered or removed without
prior approval by the City of Harrisburg.
(b)
A statement referencing the operation and maintenance (O&M)
agreement and stating that the O&M agreement is part of the SWM
site plan.
(c)
A note indicating that record drawings will be provided for
all stormwater management facilities prior to occupancy or the release
of financial security.
(d)
The following signature block for the qualified professional
preparing the SWM site plan:
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"I,__________, hereby certify that the stormwater management
plan meets all design standards and criteria of the City of Harrisburg's
Stormwater Management Ordinance."
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(e)
The following signature block for the qualified professional
preparing the SWM site plan as applicable:
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"I,__________, hereby certify that there (are/are not) wetlands
on the subject property, the proposed project (will/will not) impact
off-site wetlands, and permits (are/are not) required from the state
or federal government."
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B. SWM site reports shall include (but not be limited to):
(1)
The name of the development; name and location address of the
property site; name, address, and telephone number of the applicant/owner
of the property; and name, address, telephone number, e-mail address,
and engineering seal of the individual preparing the SWM site report.
(2)
Project description narrative, including expected project time
schedule.
(3)
Location map showing the project site and its location relative
to release rate districts.
(4)
Drainage area maps for all watersheds and inlets depicting the
time of concentration paths.
(5)
A detailed description of the existing site conditions. 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.
(6)
Complete hydrologic, hydraulic and structural computations,
calculations, assumptions, and criteria for the design of all stormwater
BMPs.
(7)
Description of and justification and actual field results for
infiltration testing with respect to the type of test and test location
for the design of infiltration BMPs.
(8)
Calculations showing the total drainage area and impervious
area loading rates to each BMP.
(9)
The effect of the project (in terms of runoff volumes, water
quality, and peak flows) on surrounding properties and aquatic features
and on any existing municipal stormwater collection system that may
receive runoff from the project site.
(10)
Description of the proposed changes to the land surface and
vegetative cover, including the type and amount of impervious area
to be added.
(11)
All applicable worksheets from Chapter 8 of the BMP Manual when
establishing volume controls.
(12)
Identification of short-term and long-term ownership, operation,
and maintenance responsibilities as well as schedules and costs for
inspection and maintenance activities for each permanent stormwater
or drainage BMP, including provisions for permanent access or maintenance
easements.
C. Supplemental information to be provided prior to recording of a SWM
site plan, as applicable:
(1)
Signed and executed operations and maintenance agreement (Appendix
A).
(2)
Signed and executed easements, as required for all on-site and
off-site work.
(3)
An erosion and sedimentation control plan and approval letter
from the Dauphin County Conservation District.
(5)
Permits from PADEP and ACOE.
(7)
A wetland delineation report.
(8)
A highway occupancy permit from PennDOT when utilization of
a PennDOT storm drainage system is proposed or when proposed facilities
would encroach onto a PennDOT right-of-way.
A modification to a submitted SWM site plan and report for a
development site that involves a change in stormwater management facilities
or techniques, or that involves the relocation or redesign of stormwater
management facilities, or that is necessary because soil or other
conditions are not as stated on the SWM site plan as determined by
the City of Harrisburg, shall require a resubmission of the modified
SWM site plan in accordance with this Part 9.
A disapproved SWM site plan and report may be resubmitted, with
the revisions addressing the City of Harrisburg's concerns documented
in writing, to the City of Harrisburg in accordance with this Part
9. The applicable municipal review fee must accompany a resubmission
of a disapproved SWM site plan and report.