A.
Appropriate sections from the municipality's Subdivision and
Land Development Ordinance, and other applicable local ordinances,
shall be followed in preparing the SWM site plans.
B.
The municipality 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 municipality may either disapprove the submission
and require a resubmission, or in the case of minor deficiencies,
the municipality 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(11).
(2)
The following signature block for the municipality:
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"(Municipal official or Designated Plan Reviewer (§ 375-21A)), 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 municipality'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.
(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 § 375-14.
(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
subareas 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.
Up to five copies of the SWM site plan shall be submitted as
follows:
A.
The municipality has designated Municipal Engineer as the designated
plan reviewer of SWM site plans for the municipality and shall be
understood to be the reviewer where indicated as the municipality
within this chapter.
B.
SWM site plans shall be reviewed by the municipality for consistency
with the provisions of this chapter.
C.
The municipality 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 § 508 of the Municipalities Planning
Code.[1] If a longer notification period is provided by other statute,
regulation, or ordinance, the applicant will be so notified by the
municipality.
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 municipality will not approve the
SWM site plan unless it determines that green infrastructure and LID
practices are not practicable.
E.
If the municipality disapproves the SWM site plan, the municipality
will state the reasons for the disapproval in writing. The municipality
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 municipality's concerns, to the municipality in accordance with this article. The applicable review fee, in accord with Article VII, must accompany a resubmission of a disapproved SWM site plan.
The municipality'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 municipality 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 municipality signs the approval for an SWM site plan. If an approved SWM site plan is not completed according to § 375-25 within the term of validity, then the municipality may consider the SWM site plan disapproved and may revoke any and all permits. SWM site plans that are considered disapproved by the municipality shall be resubmitted in accordance with § 375-23 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 municipality.
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 municipality may conduct inspections during construction as it
deems appropriate. If inspections performed by the municipality reveal
deficiencies from the submitted and approved SWM site plan, the municipality
may request corrective actions. Any corrective action shall be at
the cost of the stormwater facility owner.
D.
After receipt of the completion certification by the municipality,
the municipality may conduct a final inspection.
