For any of the activities regulated by this chapter, the preliminary
or final approval of subdivision and/or land development plans, the
issuance of any building or occupancy permit, the commencement of
any earth disturbance, or activity may not proceed until the property
owner or applicant or his/her agent has received written approval
of a SWM Site Plan from the municipality and an approval of an adequate
Erosion and Sediment (E&S) Control Plan review from the municipality
and Bucks County Conservation District, as applicable.
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 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, including plan contents described in subsection
B of this section.
(2) General
description of proposed SWM techniques to be used for SWM facilities.
(3) Complete
hydrologic and hydraulic computations for all SWM facilities.
(4) All
reviews and letters of adequacy from the Bucks County Conservation
District for the erosion and sedimentation plan as required by the
municipal, county, and state regulations.
(5) A
general description of proposed nonpoint source pollution controls.
(6) The
SWM site plan application and completed fee schedule form and associated
fee(s) for all regulated activities not already paid pursuant to the
SALDO regulations (Appendix C-1 of this chapter).
(7) The
SWM Site Plan Checklist (Appendix C-2 of this chapter).
(8) Appropriate
sections from this chapter, the subdivision and land development ordinance,
and other applicable local ordinances shall be followed in preparing
the SWM site plan.
B. Plans.
The SWM site plan shall provide the following information:
(1) The
overall stormwater management concept for the project.
(2) A
determination of natural site conditions and stormwater management
needs in accordance with the PA BMP Manual. This shall include, but
not be limited to:
(a) Site features.
[1] The location of the project relative to highways, municipal boundaries
or other identifiable landmarks.
[2] The locations of all existing and proposed utilities, sanitary sewers,
and water lines on site and to within 50 feet of property lines.
[3] Proposed structures, roads, paved areas, and buildings.
[4] The total tract boundary and size with distances marked to the nearest
foot and bearings to the nearest degree.
[5] Plan and profile drawings of all SWM BMPs, including drainage structures,
pipes, open channels, and swales. At a minimum this should include
pre- and post-drainage area maps, an overall post-construction stormwater
management plan, stormwater details sheets, and landscape plans (if
proposing landscaped SWM BMPs, including bioretention facilities,
low-impact development, bioretention, and vegetative basins).
[6] The locations and minimum setback distances of existing and proposed
on-lot wastewater facilities and water supply wells.
[7] The location of all erosion and sediment control facilities.
[8] The location of proposed septic tank infiltration areas and wells
in cases where groundwater recharge measures such as seepage pits,
beds or trenches are proposed.
(b) Natural site conditions.
[1] 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; hydrologic soil groups A and B; vernal pools; stream buffers; open channels; existing recharge areas; and floodplains. The area of each of these sensitive areas shall be calculated and should be consistent with the runoff volume calculation required pursuant to §
174-16 of this chapter.
[2] A detailed site evaluation for projects proposed in areas of frequent
flooding, carbonate geology or karst topography, and other environmentally
sensitive areas, such as brownfields and source water protection areas.
[3] Existing and proposed contour lines at intervals of two feet, or
one foot as appropriate.
[4] The total extent of the drainage area upstream from the site and
all downgradient receiving channels, swales and waters to which stormwater
runoff or drainage will be discharged.
(c) 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 §
174-14.
(d) 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.
(3) The
format of the plan shall include the following:
(a) The expected project time schedule.
(b) 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.
(d) A graphic and written scale of one inch equals no more than 50 feet
(a larger scale may be required as determined by the Municipal Engineer).
(f) An access easement around all stormwater management facilities is
required that would provide ingress to and egress from a public right-of-way.
The size of the easement shall be commensurate with the maintenance
and access requirements determined in the design of the BMP and as
necessary to implement the operation and maintenance (O&M) plan.
(g) A key map showing all existing manmade features beyond the property
boundary that would be affected by the project.
(h) A note on the plan indicating the location and responsibility for
maintenance of stormwater management facilities. All facilities shall
meet the performance standards and design criteria specified in this
chapter.
(i) The following signature block for the design engineer: "I, (Design
Engineer), on this date (date of signature), hereby certify that the
SWM Site Plan meets all design standards and criteria of the Neshaminy
Creek Watershed Act 167 Stormwater Management Ordinance or Plan."
(j) A statement, signed by the applicant, acknowledging that any revision
to the approved SWM site plan must be approved by the municipality
and that a revised E&S plan must be submitted to the Bucks County
Conservation District.
(4) A
soil erosion and sediment control plan, where applicable, as prepared
for and submitted to the approval authority.
(5) The
SWM site plan shall include an operations and maintenance (O&M)
plan for all existing and proposed physical stormwater management
facilities. This plan shall address longterm ownership and responsibilities
for O&M as well as schedules and costs for O&M activities.
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:
(1) 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 by the applicant to the following
agencies:
(1) Two
copies to the municipality accompanied by the requisite municipal
review fee, as specified in this chapter.
(2) Two
copies to the Bucks County Conservation District, if required.
(3) One
copy to the Municipal Engineer (where applicable).
(4) One
copy to the Bucks County Planning Commission if the regulated activity
is also required to submit a subdivision and/or land development plan
to the County Planning Commission in accordance with the Pennsylvania
Municipal Planning Code.
C. Any submissions
to the agencies listed above that are found to be incomplete shall
not be accepted for review and shall be returned to the applicant
with a notification in writing of the specific manner in which the
submission is incomplete.
D. Additional
copies shall be submitted as requested by the municipality or PADEP.
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 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 this section 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 §
174-25.