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,
or the commencement of any earth disturbance may not proceed until
the applicant or his/her agent has received written approval of a
drainage plan from the municipality and an adequate erosion and sediment
control plan review by the Conservation District.
The drainage plan shall consist of a general description of the project including sequencing items described in §
92-9, calculations, maps and plans and §
92-16, Consumptive use tracking report. A note on the maps shall refer to the associated computations and erosion and sediment control plan by title and date. The cover sheet of the computations and erosion and sediment 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 not be accepted for review and shall be returned to the applicant. The following items shall be included in the drainage plan:
A. General.
(1) General description of the project including those areas described in §
92-9.
(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 letters of adequacy obtained 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 sheets of 24 inches by 36 inches and/or shall be prepared in a
form that meets the requirements for recording at the offices of the
Recorder of Deeds of Monroe County. If the Subdivision and Land Development
Ordinance (SALDO) has more stringent criteria, 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,
municipalities or other identifiable landmarks.
(2) Existing and final 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 waters of
the commonwealth within the project area.
(4) Other physical features including flood hazard boundaries,
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) The location(s) of public water supply wells and surface
water intakes as well as their source water protection areas.
(7) Soil names and boundaries.
(8) Limits of earth disturbance, including the type and
amount of impervious area that would be added.
(9) Proposed structures, roads, paved areas, and buildings.
(10) The name of the development, the name and address
of the applicant 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.
(18) Overland drainage patterns and swales.
(19) A fifteen-foot-wide access easement to and 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 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.
(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 E & S plan must be submitted
to the Conservation District for a determination of adequacy.
(23) 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 design
standards and criteria of the Brodhead/McMichaels 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 §
92-9.
(b)
Stormwater runoff computations as specified
in this chapter.
(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 §
92-28 of this chapter.
(2) An erosion and sediment control plan.
(3) Completed consumptive use tracking report as specified in §
92-16.
(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 utilization 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.
The municipality shall require receipt of a
complete plan, as specified in this chapter. For any activities that
require an NPDES Permit for Stormwater Discharges from Construction
Activities, or a PaDEP Joint Permit Application, or a PennDOT Highway
Occupancy Permit, or any other permit under applicable state or federal
regulations, or are regulated under Chapter 105 (Dam Safety and Waterway
Management) or Chapter 106 (Floodplain Management) of PaDEP's Rules
and Regulations, the proof of application for said permit(s) or approvals
shall be part of the plan. The plan shall be coordinated with the
state and federal permit process and the municipal SALDO review process.
A. For those regulated activities which require SALDO
approval, the drainage plan and ERSAM shall be submitted by the applicant
as part of the preliminary plan submission.
B. For those regulated activities that do not require SALDO approval, see §
92-17, General requirements.
C. Six copies of the drainage plan shall be submitted
and distributed as follows:
(1) Two copies to the municipality accompanied by the
requisite municipal review fee, as specified in this chapter and or
by resolution.
(2) Two copies to the Conservation District.
(3) One copy to the Municipal Engineer.
(4) One copy to the County Planning Commission.
D. Any submissions found 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.
A disapproved drainage plan may be resubmitted, with the revisions addressing the Municipal Engineer's concerns documented in writing and addressed to the Municipal Secretary in accordance with §
92-20 of this chapter and distributed accordingly and be subject to review as specified in §
92-21 of this chapter. The applicable municipal review and inspection fee must accompany a resubmission of a disapproved drainage plan.