The SWM site plan shall consist of a general description of
the project, including calculations, maps, and plans. A note on the
maps shall refer to the associated computations and erosion and sediment
(E&S) control plan by title and date. The cover sheet of the computations
and E&S control plan shall refer to the associated maps by title
and date. All SWM site plan materials shall be submitted to the municipality
in a format that is clear, concise, legible, neat, and well organized;
otherwise, the SWM site plan shall not be accepted for review and
shall be returned to the applicant. The following items shall be included
in the SWM site plan:
A. General.
(1) General description of the project.
(2) General description of proposed stormwater management techniques, including construction specifications of the materials to be used for stormwater management facilities. (Required for modified SWM site plan, per
Table 76.1 for Bucks and Montgomery Counties.)
(3) Complete hydrologic, hydraulic, and structural computations for all
stormwater management facilities.
(4) An erosion and sediment control plan, including all reviews and letters of adequacy from the Conservation District. (Required for modified SWM site plan, per
Table 76.1 for Bucks and Montgomery Counties.)
(5) A general description of proposed nonpoint source pollution controls.
(6) The SWM site plan application and completed fee schedule form and
associated fee.
(7) The SWM site plan checklist.
B. Maps.
(1) Prepare an existing resource and site analysis map (ERSAM) showing
environmentally sensitive areas including, but not limited to, steep
slopes, ponds, lakes, streams, wetlands, hydric soils, vernal pools,
stream buffers, floodplains and hydrologic soil groups. Land development,
existing recharge areas, and any other requirements specifically outlined
in the municipal SALDO also shall be included.
(2) Map(s) of the project area shall be submitted on twenty-four-inch-by-thirty-six-inch
sheets and/or shall be prepared in a form that meets the requirements
for recording at the offices of the Recorder of Deeds of Montgomery
County. If the SALDO has more stringent criteria than this Part 3,
then the more stringent criteria shall apply. The contents of the
map(s) shall include, but not be limited to:
(a)
The location of the project relative to highways, municipal
boundaries, or other identifiable landmarks.
(b)
Existing contours at intervals of two feet or less. In areas
of slopes greater than 10%, five-foot contour intervals may be used.
(c)
Existing streams, lakes, ponds, or other waters of the commonwealth
within the project area.
(d)
Other physical features including flood hazard boundaries, stream
buffers, existing drainage courses, areas of natural vegetation to
be preserved, and the total extent of the upstream area draining through
the site.
(e)
The locations of all existing and proposed utilities, sanitary
sewers, and water lines within 50 feet of property lines.
(f)
A map, which may be done as an overlay, showing soil names and
boundaries.
(g)
Limits of earth disturbance, including the type and amount of impervious area that is proposed. (Required for modified SWM site plan, per
Table 76.1 for Bucks and Montgomery Counties.)
(h)
Proposed structures, roads, paved areas, and buildings. (Required for modified SWM site plan, per
Table 76.1 for Bucks and Montgomery Counties.)
(i)
Final contours at intervals of two feet or less. In areas of
steep slopes (greater than 10%), five-foot contour intervals may be
used.
(j)
The name of the development, the name and address of the owner
of the property, and the name of the individual or firm preparing
the plan.
(k)
The date of submission. (Required for modified SWM site plan, per
Table 76.1 for Bucks and Montgomery Counties.)
(l)
A graphic and written scale of one inch equals no more than
50 feet; for tracts of 20 acres or more, the scale shall be one inch
equals no more than 100 feet.
(n)
The total tract boundary and size with distances marked to the
nearest foot and bearings to the nearest degree.
(o)
Existing and proposed land use(s).
(p)
A key map showing all existing man-made features beyond the
property boundary that would be affected by the project.
(q)
Location of all open channels.
(r)
Overland drainage patterns and swales.
(s)
A fifteen-foot wide access easement around all stormwater management
facilities to provide ingress to and egress from a public right-of-way.
(t)
The location of all erosion and sediment control facilities.
(u)
A note on the plan indicating the location and responsibility
for maintenance of stormwater management facilities that would be
located off site. All off-site facilities shall meet the performance
standards and design criteria specified in this Part 3.
(v)
A statement, signed by the applicant, acknowledging that any revision to the approved drainage plan must be approved by the municipality, and that a revised erosion and sediment control plan must be submitted to the municipality or conservation district for approval. (Required for modified SWM site plan, per
Table 76.1 for Bucks and Montgomery Counties.)
(w)
The following signature block for the Design Engineer:
"I, (Design Engineer), on this date (date of signature), hereby
certify that the drainage plan meets all requirements of the Department
of Environmental Protection's (DEP's) regulations and this
Part 3."
C. Supplemental information to be submitted to the municipality.
(1) The following information shall be submitted by the applicant and
shall include:
(a)
The overall stormwater management concept for the project designed.
(b)
Stormwater runoff computations required by this Part 3.
(c)
Stormwater management techniques to be applied both during and
after development.
(d)
Expected project time schedule.
(e)
Development stages or project phases, if so proposed.
(f)
An operations and maintenance (O&M) plan in accordance with §
154-99 of this Part
3.
(3) A description of 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.
(4) An approved highway occupancy permit from the Pennsylvania Department
of Transportation (PennDOT) District office when drainage towards
PennDOT property is proposed.
D. Stormwater management facilities.
(1) All stormwater management facilities must be located on a plan and described in detail (Required for modified SWM site plan, per
Table 76.1 for Bucks and Montgomery Counties.)
(2) When infiltration measures such as seepage pits, beds, or trenches
are used, the locations of existing and proposed septic tank infiltration
areas and wells must be shown.
(3) All calculations, assumptions, and criteria used in the design of the stormwater management facilities must be shown. (Required for modified SWM site plan, per
Table 76.1 for Bucks and Montgomery Counties.)
The municipality requires submission of a complete SWM site
plan, as specified in this Part 3.
A. Proof of application or documentation of required permit(s) or approvals
for the programs listed below shall be part of the plan:
(1) National Pollutant Discharge Elimination System (NPDES) permit for
stormwater discharges from construction activities.
(2) Any other permit under applicable state or federal regulations.
B. Six copies of the SWM site plan shall be submitted and distributed
as follows:
(1) Three copies to the municipality accompanied by the requisite fees,
as specified in this Part 3.
(2) Two copies to the County Conservation District.
(3) One copy to the County Planning Commission/Department.
C. Any submissions to the agencies listed above that are found to be
incomplete may not be accepted for review and may be returned to the
applicant with a notification in writing of the manner in which the
submission is incomplete.
D. Additional copies shall be submitted as requested by the municipality,
County Conservation District, or DEP.
A modification to a submitted SWM site plan that involves a
change in BMPs or techniques, or that involves the relocation or redesign
of 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 modification and resubmission of the 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 fees must accompany
a resubmission of a disapproved SWM site plan.