For any of the activities regulated by this Part 2, the preliminary
or final approval of subdivision and/or land development plans, the
issuance of any building or occupancy permit, or the commencement
of any land disturbance activity may not proceed until the applicant
or his/her agent has received written approval of a drainage plan
from the Municipality.
The drainage plan shall consist of all applicable calculations,
maps, and plans. A note on the maps shall refer to the associated
computations and erosion and sedimentation control plan by title and
date. The cover sheet of the computations and erosion and sedimentation
control plan shall refer to the associated maps by title and date.
All drainage plan materials shall be submitted to the municipality
in a format that is clear, concise, legible, neat, and well organized;
otherwise, the drainage plan shall be disapproved and returned to
the applicant. The following items shall be included in the drainage
plan:
A. General
(1) General description of project.
(2) General description of permanent stormwater management techniques,
including construction specifications of the materials to be used
for stormwater management facilities.
(3) Complete hydrologic, hydraulic, and structural computations for all
stormwater management facilities.
(4) An erosion and sediment control plan, including all reviews and approvals
by the Conservation District.
(5) A general description of nonpoint source pollution controls.
B. Maps. Map(s) of the project area shall be submitted on twenty-four-inch-by-thirty-six-inch
sheets and shall be prepared in a form that meets the requirements
for recording at the offices of the Recorder of Deeds of Bucks County.
The contents of the maps shall include, but not be limited to:
(1) The location of the project relative to highways, municipalities,
or other identifiable landmarks.
(2) Existing contours at intervals of two feet. In areas of steep slopes
(greater than 15%), five-foot contour intervals may be used.
(3) Existing streams, lakes, ponds, or other bodies of water within the
project area.
(4) Other physical features including flood hazard boundaries, sinkholes,
streams, 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) An overlay showing soil names and boundaries.
(7) Proposed changes to the land surface and vegetative cover, including
limits of earth disturbance and the type and amount of impervious
area that would be added.
(8) Proposed structures, roads, paved areas, and buildings.
(9) Final contours at intervals of two feet. In areas of steep slopes
(greater than 15%), 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.
(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.
(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.
(19)
A minimum fifteen-foot-wide access easement around all stormwater
management facilities that would provide ingress to and egress from
a public right-of-way.
(20)
The location of all erosion and sedimentation 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 Part 2.
(22)
A statement, signed by the landowner, acknowledging the stormwater
management system to be a permanent fixture that can be altered or
removed only after approval of a revised plan by the Municipality,
which shall be recorded with the record plan and which shall be applicable
to all future landowners.
(23)
The following signature block for the design engineer:
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(Design Engineer), on this date (date of signature), has reviewed
and hereby certify that the drainage plan meets all design standards
and criteria of the East Branch Perkiomen Creek Watershed Act 167
Stormwater Management Ordinance.
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C. Supplemental information.
(1) A written description of the following information shall be submitted.
(a)
The overall stormwater management concept for the project designed in accordance with §
129-42.
(b)
Stormwater runoff computations as specified in this Part 2.
(c)
Stormwater management techniques to be applied both during and
after development.
(d)
Expected project time schedule.
(e)
Development stages (project phases) if so proposed.
(f)
An operation and maintenance plan in accordance with §
129-63 of this Part
2.
(2) A soil erosion and sedimentation control plan, where applicable,
including all reviews and approvals, as required by DEP.
(3) A geologic assessment of the effects of runoff on sinkholes as specified
in this Part 2.
(4) 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.
(5) A declaration of adequacy and highway occupancy permit from the PennDOT
District Office when the use of a PennDOT storm drainage system is
proposed.
D. Stormwater management facilities.
(1) All stormwater management facilities must be located on a plan and
described in detail.
(2) When groundwater recharge methods 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.
For all activities regulated by this Part
2, the steps below shall be followed for submission. For any activities that require a DEP joint permit application and regulated under Chapter 105 (Dam Safety and Waterway Management) or Chapter
106 (Floodplain Management) of DEP's Rules and Regulations, require a PennDOT highway occupancy permit, or require any other permit under applicable state or federal regulations, the proof of application for that, the permit(s) shall be part of the plan. The plan shall be coordinated with the state and federal permit process.
A. The drainage plan shall be submitted by the applicant as part of
the preliminary plan submission for the regulated activity.
B. A minimum of four copies of the drainage plan shall be submitted.
C. Distribution of the drainage plan will be as follows:
(1) Two or more copies to the Municipality accompanied by the requisite
municipal review fee, as specified in this Part 2.
(2) One copy to the Municipal Engineers.
(3) One copy to the Bucks County Planning Commission.
A disapproved drainage plan may be resubmitted, with the revisions addressing the Municipal Engineer's concerns documented in writing addressed to the Municipality in accordance with §
129-54 of this Part
2 and distributed accordingly and be subject to review as specified in §
129-55 of this Part
2. The applicable Municipality review fee must accompany a resubmission of a disapproved drainage plan.