[Ord. 8/12/1999, § 4.1]
1.
For any of the activities regulated by this Part, 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 Township.
2.
Drainage plans shall be impressed or legibly stamped with the professional
seal of the design professional responsible for the total drainage
plan.
[Ord. 8/12/1999, §§ 4.2]
1.
No exemption shall be provided for regulated activities as defined in § 26-104 unless specifically exempted in this section.
A.
Any regulated activity that would create 5,000 square feet or less
of impervious area is exempt from the drainage plan preparation provisions
of this Part. This criterion shall apply to the total development
even if development is to take place in phases. The date of the appropriate
official County plan adoption shall be the starting point from which
to consider tracts as "parent tracts" in which future subdivision
and respective impervious area computations shall be cumulatively
considered. Exemption shall not relieve the applicant from providing
adequate stormwater management to meet the purpose of this Part and
the requirements of the Pennsylvania Storm Water Management Act, 32
P.S. § 680.1 et seq.
B.
Land disturbance associated with existing or new one- and two-family
dwellings, subject to the limitations described in Subsection A of
this section, is exempted. Long driveways for one-family dwellings
are exempted so long as the lot area and topography allow for natural
drainage of driveway runoff without causing damage or risk to adjacent
properties. In order to qualify for such exemptions the landowner,
developer or other responsible person shall demonstrate to the satisfaction
of the Township that drainage easements have been secured from all
affected landowners along the path of the uncontrolled flow, and further,
that such drainage easements have been officially recorded with the
Columbia County Recorder of Deeds.
C.
Use of land for gardening for home consumption is exempted.
D.
Agriculture, when operated in accordance with a conservation plan
or erosion and sedimentation control plan found adequate by the Conservation
District or NRCS in accordance with Chapter 102[1] regulations, is exempted. The agricultural activities
such as growing crops, rotating crops, filling of soil and grazing
animals and other such activities are specifically exempt from complying
with the requirements of this Part when such activities are conducted
in accordance with a conservation plan found adequate by the Conservation
District in accordance with Chapter 102 regulations.
[1]
Editor's Note: See 25 Pa. Code Chapter 102, Erosion and Sediment
Control.
E.
Forest management operations conducted in accordance with the Pennsylvania
Department of Environmental Protection's management practices
contained in its publication Soil Erosion and Sedimentation Control
Guidelines for Forestry and operated under an erosion and sedimentation
control plan are exempted.
[Ord. 8/12/1999, § 4.3]
1.
The drainage plan shall consist of all applicable calculations, maps
and plans. Notations 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 Township in a format that
is clear, concise, legible, neat and well organized; otherwise, the
drainage plan shall be disapproved and returned to the developer.
A.
The following items shall be included in the drainage plan:
(1)
General.
(a)
General description of project and proposed land use and development.
(b)
General description of permanent stormwater management techniques,
including construction specifications and materials specifications
to be used for stormwater management facilities.
(c)
Complete hydrologic, hydraulic, and structural computations
for all stormwater management facilities.
(2)
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 the
offices of the Recorder of Deeds of Columbia County. The contents
of the map(s) shall include, but not be limited to:
(a)
The location of the project relative to adjacent tax parcels,
highways, municipalities or other identifiable landmarks.
(b)
Existing contours at intervals of two feet. In areas of steep
slopes (greater than 15%) five feet contour intervals may be used.
(c)
Existing streams, lakes, ponds or other bodies of water within
the project area.
(d)
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.
(e)
The locations of all existing and proposed utilities, sanitary
sewers and water lines on the site and within 50 feet of property
lines, and any right-of-way or easement.
(f)
An overlay showing soil names and boundaries.
(g)
Proposed changes to the land surface and vegetative cover, including
the type, location and amount of impervious area that would be added.
(h)
Proposed structures, roads, paved areas and buildings.
(i)
Final contours at intervals of two feet. In areas of steep slopes
(greater than 15%), five-foot contour intervals may be used.
(j)
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.
(k)
The date of submission.
(l)
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.
(m)
A North arrow.
(n)
The total tract boundary and size with courses and distances
marked to the nearest foot and bearings to the nearest degree.
(o)
Existing and proposed land use(s), with the proposed use(s)
distinctly labeled.
(p)
A key map showing all existing man-made features beyond the
property boundary that would be affected by the project.
(q)
Horizontal and vertical profiles of all open channels, including
hydraulic capacity.
(r)
Overland drainage paths.
(s)
An access easement, 20 feet in width, around all stormwater
management facilities so as to provide ingress to and egress from
such facilities from a public right-of-way.
(t)
A note on the plan indicating the location and responsibility
for 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.
(u)
A construction detail of any improvements made to sinkholes
and the location of all notices to be posted as specified in this
Part.
(v)
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 Township.
(w)
The following signature blocks for the Township:
The Montour Township Engineer on this date_____, has reviewed
and hereby certifies that this drainage plan meets all design standards
and criteria required by this Part.
The Montour Township Planning Commission on this date_____,
has reviewed and hereby recommends to the Board of Supervisors that
this drainage plan be approved _____ disapproved _____.
The Montour Township Board of Supervisors on this date _____
has approved _____ disapproved _____ this drainage plan.
(x)
The location of all erosion and sedimentation control facilities.
(3)
Supplemental Information.
(a)
A written description of the following information shall be
submitted.
(b)
A soil erosion and sedimentation control plan, including all
reviews and approvals, as required by PA DEP.
(c)
A geologic assessment of the effects of runoff on sinkholes
as specified in this Part.
(d)
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.
(e)
A declaration of adequacy and highway occupancy permit from
the PA DOT District Office when utilization of a PA DOT storm drainage
system is proposed.
(4)
Stormwater Management Facilities.
(a)
All stormwater management facilities must be located on a map
and be described in detail.
(b)
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.
(c)
All calculations, assumptions and criteria used in the design
of the stormwater, management facilities must be shown or noted.
[Ord. 8/12/1999, § 4.4]
1.
For all activities regulated by this Part, the steps below shall
be followed for submission. For any activities that require a PA DEP
Joint Permit Application and are regulated under 25 Pa. Code, Chapter
105 (Dam Safety and Water Management) or Chapter 106 (Floodplain Management),
require a PA DOT 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.
Ten copies of the drainage plan shall be submitted to the Township
Secretary, accompanied by the requisite Township review fee, as specified
in the Township Fee Resolution.
D.
Where the Township Secretary determines that an adjacent municipality
or a government agency may be affected by a proposed drainage plan
additional copies of the plan may be required and shall be transmitted
to the affected municipality or agency, together with instructions
on contact person and deadline for review and comment.
[Ord. 8/12/1999, § 4.5]
1.
The Township shall review the drainage plan for consistency with
the requirements of this Part and any other applicable Township ordinance
or requirement. The Township shall require receipt of a complete plan,
as specified in this Part.
2.
The Township Engineer shall review the drainage plan for consistency
with this Part. Should the drainage plan be determined to be inconsistent
with this Part, the Township Engineer will forward a written determination
and recommendation for disapproval to the Township Supervisors. The
Township shall decide whether to approve or disapprove the drainage
plan and send a written decision to the developer citing the reason(s)
for the disapproval within 90 days from the receipt of a complete
drainage plan and review fee. Any disapproved drainage plans may be
revised by the developer and resubmitted consistent with this Part.
3.
For regulated activities specified in § 26-104, the Township shall notify the Township Code Enforcement Officer, in writing, whether the drainage plan is consistent with this Part and forward a copy of the approval or disapproval letter to the developer. Any disapproved drainage plan may be revised by the developer and resubmitted consistent with this Part.
4.
For regulated activities requiring a PA DEP joint permit application,
the Township shall notify PA DEP whether the drainage plan is consistent
with this Part and forward a copy of the review letter to the DEP
and the developer.
5.
The Township shall not approve any subdivision or land development for regulated activities specified in § 26-104 if the drainage plan has been found to be inconsistent with this Part, as determined by the Township Engineer, or without considering the comments of the Township Planning Commission. All required permits from PA DEP must be obtained prior to approval.
6.
The Township Code Enforcement Officer shall not issue a building permit for any regulated activity specified in § 26-104 if the drainage plan has been found to be inconsistent with this Part, as determined by the Township Engineer. All required permits from PA DEP must be obtained prior to issuance of a building permit.
7.
The developer shall be responsible for completing an As-Built Survey
of all stormwater management facilities included in the approved drainage
plan. The as-built survey and an explanation of any discrepancies
with the design plans shall be submitted to the Township for final
approval. In no case shall the Township approve the as-built survey
until the Township receives a copy of an approved declaration of adequacy,
highway occupancy permit from the PA DOT District Office, and any
required permits from PA DEP.
8.
The Township's approval of a drainage plan shall be valid for a period not to exceed two years. This two-year time period shall commence on the date that the Township signs the approved drainage plan. If stormwater management facilities included in the approved drainage plan have not been constructed, or if an as-built survey of these facilities has not been approved within this two-year time period, then the Township may consider the drainage plan disapproved and may revoke any and all permits. Drainage plans that are considered disapproved by the Township shall be resubmitted in accordance with § 26-137 of this Part. The Township Supervisors may consider a request from the developer for extension of the time limit for good cause shown.
[Ord. 8/12/1999, § 4.6]
1.
A modification to a submitted drainage plan for a development site that involves a change in stormwater management facilities or techniques, or that involves the relocation or redesign of stormwater management facilities, or that is necessary because soil or other conditions are not as stated on the drainage plan (as determined by the Township or the Township Engineer), shall require a resubmission of the modified drainage plan consistent with § 26-134 of this Part and be subject to review as specified in § 26-135 of this Part.
2.
A modification to an already approved or disapproved drainage plan
shall be submitted to the Township Secretary, accompanied by the applicable
review fee. A modification to a drainage plan for which a formal action
has not been taken by the Township shall be submitted to the Township,
accompanied by the applicable review fee.
[Ord. 8/12/1999, § 4.7]
A disapproved drainage plan may be resubmitted, with the revisions addressing the Township's concerns documented in writing, to the Township in accordance with § 26-134 of this Part and be subject to review as specified in § 26-135 of this Part. The applicable review fee must accompany a resubmission of a disapproved drainage plan.
