[Ord. No. 1177, 11/1/2022]
1.
The following items shall be included in the SWM site plan:
A.
Appropriate sections from the municipality's Subdivision and
Land Development Ordinance,[1] and other applicable local ordinances, shall be followed
in preparing the SWM site plans. In instances where the municipality
lacks subdivision and land development regulations, the content of
SWM site plans shall follow the county's Subdivision and Land
Development Ordinance.
B.
The municipality shall not approve any SWM site plan that is deficient
in meeting the requirements of this Part. At its sole discretion and
in accordance with this Subpart, when a SWM site plan is found to
be deficient, the municipality may either disapprove the submission
and require a resubmission, or in the case of minor deficiencies,
the municipality may accept submission of modifications.
C.
Provisions for permanent access or maintenance easements for all physical SWM BMPs, such as ponds and infiltration structures, as necessary to implement the operation and maintenance (O&M) plan discussed in Subsection 1E(9), below.
D.
The following signature block for the municipality:
"Borough Engineer, on this date (Signature date), has reviewed
and hereby certifies that the SWM site plan meets all design standards
and criteria of the Municipal Ordinance No. 1177."
E.
The SWM site plan shall provide the following information:
(1)
The overall stormwater management concept for the project.
(3)
Stormwater runoff design computations and documentation as specified in this Part, or as otherwise necessary to demonstrate that the maximum practicable measures have been taken to meet the requirements of this Part, including the recommendations and general requirements in § 26-112.
(4)
Expected project time schedule.
(5)
A soil erosion and sediment control plan, where applicable,
as prepared for and submitted to the approval authority.
(6)
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 stormwater conveyance system that may be affected
by the project.
(7)
Plan and profile drawings of all SWM BMPs, including drainage
structures, pipes, open channels, and swales.
(8)
SWM site plan shall show the locations of existing and proposed
on-lot wastewater facilities and water supply wells.
(9)
The SWM site plan shall include an 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.
(10)
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
Part.
F.
Stormwater Management Plan Contents. Stormwater management plans
shall be prepared by professionals registered in the Commonwealth
of Pennsylvania to perform such duties. Designs which entail engineering
expertise shall be prepared by engineers with appropriate expertise.
The plan shall show, be accompanied by, or be prepared in accordance
with the following:
(1)
General.
(a)
The plan shall be clearly and legibly drawn at a scale of 10
feet, 20 feet, 30 feet, 40 feet, 50 feet, or 100 feet to the inch.
Profile plans shall maintain a ratio of 1:10 vertical to horizontal.
(b)
The sheet size shall be 24 inches by 36 inches maximum. If the
plan is prepared in two or more sections, a key map showing the location
of the sections shall be placed on each sheet. If more than one sheet
is necessary, each sheet shall be numbered to show the relationship
to the total number of sheets in the plan (e.g., Sheet 1 of 5).
(c)
Plans shall be legible in every detail.
(d)
Name and address of landowner, applicant, and individual who
prepared the plan.
(e)
Plan date and date of latest revision to plan, north point,
graphic scale and written scale.
(f)
Location map, drawn to scale, relating the property to at least
two intersections of existing road center lines, including the approximate
distance to the intersection of the center lines of the nearest existing
street intersection.
(g)
Note on plan indicating any area that is proposed to be offered
for dedication to the Borough. Any area that is easemented and not
to be offered for dedication shall be identified along with a statement
that the Borough is not responsible for the maintenance of any area
not dedicated to and accepted for public use.
(h)
Certificate, signed and sealed by an individual registered in
the Commonwealth of Pennsylvania and qualified to perform such duties,
indicating compliance with the provisions of this Part (see Appendix
D).
(2)
Existing Features.
(a)
Tract boundaries showing distances, bearings and curve data,
as located by field survey or deed plotting, total acreage of tract,
and total acreage of project if less than the entire tract.
(b)
Existing contours, at a minimum vertical interval of two feet
for land with average natural slope of 4% or less and at a minimum
vertical interval of five feet for more steeply sloping land. Contours
shall be accompanied by the location of the benchmark within or immediately
adjacent to the subject tract and a notation indicating the datum
used. The United States Geodetic Survey shall be used for benchmark
datum.
(c)
Names of all owners of all immediately adjacent land, names
of all proposed or existing developments immediately adjacent, and
locations and dimensions of any streets or easements shown thereon.
(d)
Names, locations and dimensions of all existing buildings, street
rights-of-way, railroads, utilities, watercourses, drainage facilities,
floodplains, wetlands, on-lot sewage disposal facilities, easements,
and other significant features located either within and adjacent
to the property or 200 feet from the property.
(e)
The size, slope capacity, material, elevation and condition
of the existing stormwater management system and any other facility
that may be used to convey storm flows.
(f)
Soil types as designated by the U.S. Department of Agriculture,
Soil Conservation Service, Soil Survey of Cumberland County.
(g)
Designation of the location of on-site and off-site subwatersheds.
(h)
Designation of the location of the time of concentration for
the on-site and off-site subwatersheds.
(3)
Proposed Features.
(a)
Proposed land use, total number of lots and dwelling units,
and extent of commercial, industrial or other nonresidential uses.
(b)
Locations and dimensions of all proposed streets, sidewalks,
lot lines, building locations, parking compounds, impervious and semi-impervious
surfaces, sanitary sewer facilities, water facilities, stormwater
management facilities, utilities, and other significant features.
This information shall be provided to the detail necessary to construct
the facilities.
(c)
Proposed changes to land surface and vegetative cover including
areas to be cut or filled.
(d)
Proposed Topographical Data. This information shall be provided
by contour lines indicating the existing and proposed grades of the
site. Contour lines shall be provided at one foot vertical intervals
for slopes of 10% or less, and at vertical intervals of five feet
for more steeply sloping land.
(e)
Plans and profiles of proposed stormwater management facilities
including horizontal and vertical location. Additionally, a detail
with all pertinent construction requirements shall be provided for
outlet structures. This information shall be of the quality required
for the construction of all facilities.
(f)
The size, slope, capacity, material, elevation, and condition
of the proposed stormwater management system and other facility that
may be used to convey storm flows. This information shall include
invert elevations and top of grate elevations.
(g)
Plans and profiles of all erosion and sedimentation control
measures, temporary as well as permanent.
(h)
Designation of the location of on-site subwatersheds.
(i)
Designation of the location of the time of concentration for
the on-site subwatersheds.
(4)
Written Report and Calculations.
(a)
Calculations, assumptions, criteria, methodology, and references
used in the design of stormwater management facilities, the establishment
of capacities, and the predevelopment and postdevelopment peak discharge.
This information shall include data on all subwatersheds.
(b)
For all basins, a plotting or tabulation of the storage volumes
and discharge curves with corresponding water surface elevations,
inflow hydrographs and outflow hydrographs.
(c)
Geotechnical report addressing all proposed groundwater recharge
methods of stormwater management, such as seepage pits, beds, trenches,
basins.
(d)
Representative percolation tests shall be made throughout the
proposed area in accordance with PA BMP Manual.
(e)
Description of all erosion and sedimentation control measures,
temporary as well as permanent, including the staging of land moving
activities, sufficient in detail to clearly indicate their function.
All erosion and sedimentation control measures shall conform to the
requirements of the Pennsylvania Department of Environmental Protection,
Soil Erosion and Sedimentation Control Manual.
(f)
Description of an ownership and maintenance program, in a recordable
form, that clearly sets forth the ownership and maintenance responsibilities
for all temporary and permanent stormwater management facilities which
shall include the following:
1)
Description of the method and extent of the maintenance requirements.
2)
Identification of an individual, corporation, association or
other entity responsible for ownership and maintenance.
3)
When maintained by a private entity,
a copy of the legally binding document which provides that the Borough
shall have the right to:
a)
Inspect the facilities at any time.
b)
Require the private entity to take corrective measures
and assign the private entity reasonable time periods for any necessary
action.
c)
Authorize maintenance to be done by the Borough
or an agent or contractor of the Borough and the liening of the cost
of the work against the properties of the private entity responsible
for the maintenance.
[Ord. No. 1177, 11/1/2022]
[Ord. No. 1177, 11/1/2022]
1.
SWM site plans shall be reviewed by the municipality for consistency
with the provisions of this Part.
2.
The municipality shall notify the applicant in writing within 45
days whether the SWM site plan is approved or disapproved. If the
SWM site plan involves a Subdivision and Land Development Plan, the
notification shall occur within the time period allowed by the Municipalities
Planning Code[1] (90 days). If a longer notification period is provided
by other statute, regulation, or ordinance, the applicant will be
so notified by the municipality.
[1]
Editor's Note: See 53 P.S. § 10101 et seq.
3.
For any SWM site plan that proposes to use any BMPs other than green
infrastructure and LID practices to achieve the volume and rate controls
required under this Part, the municipality will not approve the SWM
site plan unless it determines that green infrastructure and LID practices
are not practicable.
4.
If the municipality disapproves the SWM site plan, the municipality
will state the reasons for the disapproval in writing. The municipality
also may approve the SWM site plan with conditions and, if so, shall
provide the acceptable conditions for approval in writing.
[Ord. No. 1177, 11/1/2022]
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 Subpart D.
[Ord. No. 1177, 11/1/2022]
A disapproved SWM site plan may be resubmitted, with the revisions
addressing the municipality's concerns, to the municipality in
accordance with this Subpart D. The applicable review fee must accompany
a resubmission of a disapproved SWM site plan.
[Ord. No. 1177, 11/1/2022]
The municipality's approval of an SWM site plan 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 municipality 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 municipality signs the approval for an SWM site plan. If an approved SWM site plan is not completed according to § 26-124 within the term of validity, 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 § 26-122 of this Part.
[Ord. No. 1177, 11/1/2022]
1.
The applicant shall be responsible for providing as-built plans of
all SWM BMPs included in the approved SWM site plan. The as-built
plans and an explanation of any discrepancies with the construction
plans shall be submitted to the municipality.
2.
The as-built submission for major earth disturbances shall include
a certification of completion signed by a qualified professional verifying
that all permanent SWM BMPs have been constructed according to the
approved plans and specifications. The latitude and longitude coordinates
for all permanent SWM BMPs must also be submitted, at the central
location of the BMPs. If any licensed qualified professionals contributed
to the construction plans, then a licensed qualified professional
must sign the completion certificate.
3.
After receipt of the completion certification by the municipality,
the municipality may conduct a final inspection.
