The following items shall be included in the SWM site plan:
A. Appropriate sections from Chapter
266, Subdivision and Land Development, 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 chapter. At its sole discretion
and in accordance with this article, 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 a permanent access or maintenance easement for all physical SWM BMPs, such as ponds and infiltration structures, as necessary to implement the operation and maintenance plan discussed in Subsection
I(9) below.
D. The following signature block for the municipality:
"(Municipal Official or designee), on this date (date of signature) has reviewed and hereby certifies that the SWM site plan meets all design standards and criteria of Chapter
257, Stormwater Management."
E. The following signature block for the registered professional preparing
the plan:
"I, _____, hereby certify on this date (date of signature) that the stormwater management plan meets all design standards and criteria of Chapter
257, Stormwater Management."
F. The following statement by the owner:
"I/we hereby acknowledge 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."
G. A note indicating that as-built plans will be submitted by a qualified
professional 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 as-built plans.
H. All permits required by the Pennsylvania Department of Environmental
Protection, Pennsylvania Department of Transportation (PA DOT), and
U.S. Army Corps of Engineers (USACE) and other regulatory agencies.
I. The SWM site plan shall provide the following information:
(1) The overall stormwater management concept for the project.
(2) A determination of site conditions in accordance with the PA BMP
Manual. 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.
(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 §
257-10.
(4) Expected project time schedule.
(5) A soil erosion and sediment control plan, where applicable, as prepared
for and approved by the approval authority.
(6) The effect (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) Plans and profile drawings of all SWM BMPs, including open channel
structures, pipes, open channels, and swales shall be at the discretion
of the municipality.
(8) SWM site plan shall show the locations of existing watercourses and
existing and proposed on-lot wastewater facilities, water supply wells,
and infiltration areas.
(9) 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.
(10)
Horizontal and vertical profiles of any existing and proposed
watercourses, drainageways, channels or streams, including hydraulic
capacity.
(11)
Hydrologic and hydraulic computations for all existing and proposed
stormwater management facilities and measures.
(12)
Stormwater management both during and after development.
(13)
Unless specifically exempted in writing, the following must
also be shown on the SWM site plan, prepared in a form which meets
the requirements for recording in the Office of the Register and Recorder
of Lycoming County, Pennsylvania:
(a)
Annotated maps, drawings, engineering plans, and construction
details. Said plan shall be prepared by a registered professional
land surveyor, qualified geologist, landscape architect, architect,
or engineer licensed in the State of Pennsylvania, 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 200 feet. Plans
shall be submitted on the following sheet sizes: 18 inches by 24 inches,
24 by 36 inches, or 36 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.
(b)
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.
(c)
Date of submission and revision, graphic scale, and North arrow.
(d)
Total tract boundary with distances marked to the nearest foot
and bearings to the nearest degree and the total acreage of the tract.
(e)
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 for 1,000 feet or as specified by the municipality.
(f)
Existing and proposed topographic contours shall be provided
at intervals not greater than five feet for existing and proposed
conditions. 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.
(g)
Existing and proposed use, including the total area of impervious
surfaces after construction.
(h)
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.
(i)
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.
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.
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.
The municipality's approval of a 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 unless otherwise authorized by the municipality. 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 a SWM site plan. If an approved SWM site plan is not completed according to §
257-21 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 §
257-19 of this chapter.