For any of the activities regulated by this chapter and not eligible for the exemptions provided in §
310-12, the final approval of subdivision and/or land development plans, the issuance of any building or occupancy permit, zoning 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 Borough.
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 Borough in a format that is clear, concise, legible,
neat and well organized; otherwise, the SWM site plan shall be rejected.
Appropriate sections relating to subdivision and land development
of the Code of the Borough of Palmyra, and other applicable Borough
ordinances, shall be followed in preparing the SWM site plan.
A. SWM site plan shall include (but not be limited to):
(1) Plans no larger than twenty-four-inch-by-thirty-six-inch sheets and
in a form that meets the requirements for recording in the Office
of the Recorder of Deeds of Lebanon 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, email 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 hydrologic
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 Borough
or their 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 Borough.
(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 Borough of Palmyra Stormwater Management Ordinance (Chapter 310)."
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(e)
The following signature block for the Borough:
[Added 9-13-2022 by Ord.
No. 819]
"(Borough official or designee), on this date (signature date),
has reviewed and hereby certifies that the SWM site plan meets all
design standards and criteria of Chapter 310."
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(23)
The overall stormwater management concept for the project.
[Added 9-13-2022 by Ord.
No. 819]
(24)
A soil erosion and sediment control plan, where applicable,
as prepared for and submitted to the approval authority.
[Added 9-13-2022 by Ord.
No. 819]
(25)
Plan and profile drawings of all SWM BMPs, including drainage
structures, pipes, open channels, and swales.
[Added 9-13-2022 by Ord.
No. 819]
(26)
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 O&M as well as schedules and costs for O&M activities.
This shall include provisions for permanent access or maintenance
easements for all physical SWM BMPs, such as ponds and infiltration
structures, as necessary to implement the O&M plan.
[Added 9-13-2022 by Ord.
No. 819]
(27)
A justification must be included in the SWM site plan if BMPs
other than green infrastructure methods and LID practices are proposed
to achieve the volume, rate, and water quality controls under this
chapter.
[Added 9-13-2022 by Ord.
No. 819]
B. SWM site report shall include (but not 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, email 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, 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.
(13)
A determination of site conditions in accordance with the BMP Manual Chapter
4. 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.
[Added 9-13-2022 by Ord.
No. 819]
(14)
Stormwater runoff design computations and documentation as specified in this chapter, or as 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 §
310-11.
[Added 9-13-2022 by Ord.
No. 819]
C. Supplemental information to be provided prior to recording of the
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 LCCD.
(5) Permits from PADEP and the United States Army Corps of Engineers.
(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 Borough, shall require a resubmission of the modified SWM site
plan in accordance with this chapter.
A disapproved SWM site plan and report may be resubmitted with
the revisions addressing the Borough's concerns documented in writing,
to the Borough in accordance with this chapter. The applicable borough
review fee must accompany a resubmission of a disapproved SWM site
plan and report.
The Borough's approval of a SWM site plan and report authorizes
the regulated activities contained in the SWM site plan for a maximum
term of validity of five years following the date of approval. The
Borough may specify a term of validity shorter than five years in
the approval for any specific SWM site plan. Terms of validity shall
commence on the date the Borough signs the approval for a 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 time, then the
Borough may consider the SWM site plan disapproved and may revoke
any and all permits or approvals.