For any of the activities regulated by this chapter, the 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 property owner or developer
or his/her agent has received written approval of a drainage plan
from the Plan Administrator.
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 Plan Administrator 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.
B. Map(s) of the project area shall be submitted on twenty-four-inch
by thirty-six-inch or thirty-inch by forty-two-inch sheets and shall
be prepared in a form that meets the requirements for recording in
the offices of the Recorder of Deeds of Clearfield County. 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 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
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)
Horizontal and vertical profiles of all open channels, including
hydraulic capacity.
(19)
A fifteen-foot-wide access easement around all stormwater management
facilities that would provide ingress from and egress to a public
right-of-way.
(20)
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.
(21)
A construction detail of any improvements made to sinkholes
and the location of all notes to be posted, as specified in this chapter.
(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 Plan Administrator.
(23)
The following signature block for the Plan Administrator:
"I, (Plan Administrator), on this date (date of signature),
have reviewed and hereby certify that the drainage plan meets all
design standards and criteria of the Sandy Lick Creek Watershed Act
167 Stormwater Management Ordinance."
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(24)
The location of all erosion and sedimentation control facilities.
C. Supplemental information.
(1) A written description of the following information shall be submitted:
(a)
The overall stormwater management concept for the project.
(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.
(2) A soil erosion and sedimentation control plan, including all reviews
and approvals, as required by PADEP.
(3) A geologic assessment of the effects of runoff on sinkholes as specified
in this chapter.
(4) The effect of the project (in terms of runoff volumes and peak flows)
on adjacent properties and on any existing City 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 map 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 chapter, the steps below
shall be followed for submission. For any activities that require
a PADEP joint permit application and regulated under Chapter 105 (Dam
Safety and Waterway Management) or Chapter 106 (Floodplain Management)
of PADEP's rules and regulations, require a PennDOT highway occupancy
permit, or require any other permit under applicable state or federal
regulations, the permit(s) shall be part of the plan.
A. The drainage plan shall be submitted by the developer as part of
the preliminary plan submission for the regulated activity.
B. Four copies of the drainage plan shall be submitted.
C. Distribution of the drainage plan will be as follows:
(1) One copy to the City accompanied by the requisite City review fee,
as specified in this chapter.
(2) One copy to the City Engineers.
(3) Two copies to the Plan Administrator accompanied by the requisite
Plan Administrator review fee as specified in this chapter.
A disapproved drainage plan may be resubmitted, with the revisions addressing the Plan Administrator's concerns documented, in writing, to the Plan Administrator, in accordance with §
379-16 of this chapter and be subject to review as specified in §
379-17 of this chapter. The applicable Plan Administrator review fee must accompany a resubmission of a disapproved drainage plan.