A.
Appropriate sections from the Township's Subdivision and Land
Development Ordinance, and other applicable local ordinances, shall
be followed in preparing the SWM site plans.
B.
The Township shall not approve any SWM site plan that is deficient
in meeting the requirements of this chapter. At its sole discretion
and in accordance with this article, when a SWM site plan is found
to be deficient, the Township may either disapprove the submission
and require a resubmission, or in the case of minor deficiencies,
the Township may accept submission of modifications.
C.
The following items shall be included in the SWM site plan:
(1)
Provisions for permanent access or maintenance easements for all physical SWM BMPs, such as ponds and infiltration structures, as necessary to implement the operation and maintenance (O&M) plan discussed in Subsection C(3)(k) below. The lawdowner shall convey to the Township easements and/or rights-of-way to assure access for periodic inspections by the Township and maintenance if required.
(2)
The following signature block for the Township:
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"(Municipal official or designated plan reviewer (§ 71A-21A)), on this date (Signature date), has reviewed and hereby certifies that the SWM site plan meets all design standards and criteria of the Municipal Ordinance No. __________, except where waivers have been granted as noted on the plan. The review is based on a survey and plan prepared by others and assumes that all information is correct and valid as submitted."
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(3)
The SWM site plan shall provide the following information:
(a)
The overall stormwater management concept for the project.
(c)
A key map showing the development site's location within
the Township's stormwater management districts, watersheds and
subareas. On all site drawings, show the boundaries of the district(s),
watershed(s) and subarea(s) as they are located on the development
site and identify their district and watershed names and applicable
subarea numbers.
(d)
Location of the 100-year floodplain on the development site
based on the current municipal Flood Insurance Rate Maps. Land identified
as flood-prone on maps issued by the Federal Insurance Administration
shall be subject to the regulations of the National Flood Insurance
Program and shall comply with the provisions of the Code of the Township
of Pine governing floodplains.
(e)
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 § 71A-14.
(f)
Expected project time schedule.
(g)
A soil erosion and sediment control plan, where applicable,
as prepared for and submitted to the approval authority.
(h)
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.
(i)
Plan and profile drawings and details of all SWM BMPs, including
drainage structures, pipes, open channels, and swales.
(j)
SWM site plan shall show the property lines, dimensions of the
site and the locations of existing and proposed on-lot wastewater
facilities and water supply wells, property boundaries, existing and
proposed topography, point(s) of interest, utilities, and potential
utility conflicts.
(k)
The SWM site plan shall include an O&M plan for all existing
and proposed physical stormwater management facilities. This plan
shall address long-term ownership and responsibilities for O&M,
including type and schedule/frequency of maintenance activities, personnel
and equipment requirements, estimated annual maintenance costs, and
method of financing continuing O&M.
(l)
A justification, acceptable to the designated plan reviewer,
must be included in the SWM site plan if BMPs other than green infrastructure
methods and LID practices are proposed to achieve the volume, rate
and water quality controls under this chapter.
(m)
Certification and seal of the qualified professional responsible
for the preparation of the plans and report.
(n)
Watershed maps delineating predevelopment and post-development
watershed boundaries and land cover conditions, as well as the flow
path and segments used to determine time of concentrations for each
watershed.
(o)
Storm sewer calculations and watershed maps delineating all
sub-areas used to size and compute flow for storm sewer system.
(p)
Existing contours at intervals of two feet except in areas with
slopes greater than 15%, in which case five-foot contour intervals
may be used.
(q)
Contours of the finished project site at intervals of two feet,
except in areas with slopes greater than 15%, in which case, five-foot
contour intervals may be used.
A.
The Township has designated Municipal Engineer as the designated
plan reviewer of SWM site plans for the Township, and shall be understood
to be the reviewer where indicated as the Township within this chapter.
B.
SWM site plans shall be reviewed by the Township for consistency
with the provisions of this chapter.
C.
The Township shall notify the applicant in writing within 45 days
whether the SWM site plan is approved or disapproved or requires additional
documentation. If the SWM site plan involves a subdivision and land
development plan, the notification shall occur within the time period
allowed by the Municipalities Planning Code (90 days). If a longer
notification period is provided by other statute, regulation, or ordinance,
the applicant will be so notified by the Township.
D.
For any SWM site plan that proposes to use any BMPs other than green
infrastructure and LID practices to achieve the volume and rate controls
required under this chapter, the Township will not approve the SWM
site plan unless it determines that green infrastructure and LID practices
are not practicable.
E.
If the Township disapproves the SWM site plan, the Township will
state the reasons for the disapproval in writing. The Township also
may approve the SWM site plan with conditions and, if so, shall provide
the acceptable conditions for approval in writing.
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 designated plan reviewer, 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 Township's concerns, to the Township in accordance with this article. The applicable review fee, in accord with Article VI, must accompany a resubmission of a disapproved SWM site plan.
The Township'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 Township 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 Township signs the approval for an SWM site plan. If an approved SWM site plan is not completed according to § 71A-25 within the term of validity, then the Township may consider the SWM site plan disapproved and may revoke any and all permits, SWM site plans that are considered disapproved by the Township shall be resubmitted in accordance with § 71A-23 of this chapter.
A.
The developer shall be responsible for providing record drawings
of all SWM BMPs included in the approved SWM site plan, including,
but not limited to BMP grading, outlet structure configuration and
emergency spillway configuration. The record drawings and an explanation
of any discrepancies with the construction plans shall be submitted
to the Township.
B.
The record drawing submission shall include a certification of completion
signed by a qualified professional verifying that all permanent SWM
BMPs have been constructed according to the approved plans and specifications.
The latitude and longitude coordinates for all permanent SWM BMPs
must also be submitted, at the central location of the BMPs. If any
licensed qualified professionals contributed to the construction plans,
then a licensed qualified professional must sign the completion certificate.
The certification shall include documentation confirming field reviewed
dewatering times for rate and volume control BMPs. Record drawings
shall be provided in both hard copy and electronic (AutoCAD, latest
edition) format.
C.
The Township may conduct inspections during construction as it deems
appropriate. If inspections performed by the Township reveal deficlencies
from the submitted and approved SWM site plan, the Township may request
corrective actions. Any corrective action shall be at the cost of
the stormwater facility owner.
(1)
The Township or a designated representative shall field review the
construction of the temporary and permanent stormwater management
facilities for the development site. The permittee shall notify the
Township 48 hours in advance of the completion of the following key
development phases:
(a)
At the completion of the preliminary site preparation, including
stripping of vegetation, stockpiling of topsoil and construction of
temporary stormwater management and erosion control facilities.
(b)
At the completion of rough grading, but prior to placing topsoil,
permanent drainage or other site development improvement and ground
covers.
(c)
During construction of the permanent stormwater facilities at
such times as specified by the Township.
(d)
Completion of permanent stormwater management facilities, including
established ground covers and plantings.
(e)
Completion of any final grading, vegetative control measures
or other site restoration work done in accordance with the approved
plan and permit.
(2)
No work shall commence on any subsequent phase until the preceding
one has been field reviewed by the Township Engineer and approved
by the Township in writing. If there are deficiencies in any phase,
the Township shall issue a written description of the required corrections
and stipulate the time by which the corrections must be made.
(3)
If during construction the contractor or permittee identifies any
site conditions, such as subsurface soil conditions or alterations
in surface or subsurface drainage, which could affect the feasibility
of the approved stormwater facilities, said person must notify the
Township within 24 hours of the discovery of such condition and request
a field review by the Township. The Township shall determine if the
condition requires a stormwater plan modification.
(4)
In cases where stormwater facilities are to be installed in areas
of landslide-prone soils or where other special site conditions exist,
the Township may require special precautions, such as soil tests and
core borings, full-time resident project representative services and/or
similar measures. All costs of any such measures shall be borne by
the permittee.
D.
After receipt of the completion certification by the Township, the
Township may conduct a final inspection.
