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 municipality may not accept the SWM site plan for review.
The following items shall be included in the SWM site plan:
A.
General.
(1)
General description of the project.
(2)
All stormwater management facilities must be located on a plan
and detailed description of proposed stormwater management techniques,
including drainage and construction specifications of the materials
to be used for the stormwater management facilities.
(3)
Complete hydrologic, hydraulic, and structural computations
for all stormwater management facilities.
(4)
An erosion and sediment control plan. The applicant is required
to obtain a letter of approval or adequacy from the conservation district
for the erosion and sediment control plan.
(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. 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, hydrologic soil groups, closed
topographic depressions and recharge areas. Land development, existing
recharge areas, and any other requirements specifically outlined in
the municipal SALDO also shall be included. 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 chapter, then the
more stringent criteria shall apply. The contents of the map(s) shall
include, but not be limited to:
(1)
The location of the project relative to highways, municipal
boundaries, or other identifiable landmarks.
(2)
Existing contours at intervals of two feet or less. In areas
of slopes greater than 10%, five-foot contour intervals may be used.
(3)
Existing streams, lakes, ponds, or other waters of the commonwealth
within the project area.
(4)
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.
(5)
The locations of all existing and proposed utilities, sanitary
sewers, and water lines within 50 feet of property lines.
(6)
A map, which may be done as an overlay, showing soil names and
boundaries.
(7)
Limits of earth disturbance, including the type and amount of
impervious area that is proposed.
(8)
Proposed structures, roads, paved areas, and buildings.
(9)
Final contours at intervals of two feet or less. In areas of
steep slopes (greater than 10%), five-foot contour intervals may be
used.
(10)
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.
(11)
The date of submission.
(12)
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.
(13)
A North arrow.
(14)
The total tract boundary and size with distances marked to the
nearest foot and bearings to the nearest degree.
(15)
Existing and proposed land use(s).
(16)
A key map showing all existing man-made features beyond the
property boundary that would be affected by the project.
(17)
Location of all open channels.
(18)
Overland drainage patterns and swales.
(19)
A fifteen-foot-wide access easement around all stormwater management
facilities to provide ingress to and egress from a public right-of-way,
where necessary, or appropriate at discretion of the municipality.
(20)
The location of all erosion and sediment control facilities.
(21)
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 chapter located within
this municipality.
(22)
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 and County Conservation District for approval.
(23)
The following signature block for the design engineer:
"I, (Design Engineer), on this date (date of signature); hereby
certify that this drainage plan meets all requirements of the Department
of Environmental Protection's (DEP's) regulations and this Ordinance."
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 chapter.
(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.
(2)
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.
(3)
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.
The municipality requires submission of a complete SWM site
plan, as specified in this chapter.
A.
Proof of application or documentation of required permit(s) or approvals
for the programs listed below shall be part of the plan:
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 chapter.
(2)
Two copies to the County Conservation District.
(3)
The Montgomery County Planning Commission will be notified by
letter regarding submission of the SWM plan to the municipality and
MCCD, and that no SWM plan need be submitted to MCPC.
C.
If any submissions to the agencies listed above are found to be incomplete,
the municipalities have the option of notifying the applicant and
requesting specific information missing from the submission. The application
review clock will not start until the municipality has determined
that the submission is complete.
D.
Additional copies shall be submitted as requested by the municipality,
County Conservation District, or DEP.
A.
The SWM site plan must be consistent with this chapter. If any submissions
are found to be incomplete, the municipalities have the option of
notifying the applicant and requesting specific information missing
from the submission. The application review clock will not start until
the municipality has determined that the submission is complete.
B.
The municipality will 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
period is 120 days. If a longer notification period is provided by
other statute, regulation, or ordinance, the applicant will be so
notified by the municipality. If the municipality disapproves the
SWM site plan, the municipality shall cite the reasons for disapproval
in writing.
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.
