In cases where stormwater management improvements are proposed
and the design review would not be covered under a subdivision or
land development plan application and the accompanying drainage plan,
a stormwater management site plan as described in this article shall
be provided. The following items shall be included in the stormwater
management site plan:
A. Appropriate sections from the Township's Subdivision and Land
Development Ordinance, and other applicable local ordinances, shall be followed
in preparing the stormwater management site plans.
B. The Township shall not approve any stormwater management site plan
that is deficient in meeting the requirements of this chapter. At
its sole discretion and in accordance with this article, when a stormwater
management 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. Provisions for permanent access or maintenance easements for all physical stormwater management BMPs, such as ponds and infiltration structures, as necessary to implement the operations and maintenance plan discussed in Subsection
D(9) below.
D. The stormwater management site plan shall provide the following information:
(1) The overall stormwater management concept for the project;
(2) A determination of site conditions in accordance with the BMP Manual. A detailed site evaluation shall be completed for projects
proposed in areas of carbonate geology or karst topography, and other
environmentally sensitive areas, such as brownfields;
(3) 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 §
220-14;
(4) Expected project time schedule;
(5) A soil erosion and sediment control plan, where applicable, as prepared
for and submitted to the approval authority;
(6) 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;
(7) Plan and profile drawings of all stormwater management BMPs, including
drainage structures, pipes, open channels, and swales;
(8) The stormwater management site plan shall show the locations of existing
and proposed on-lot wastewater facilities and water supply wells;
and
(9) The stormwater management site plan shall include an operations and
maintenance plan for all existing and proposed physical stormwater
management facilities. This plan shall address long-term ownership
and responsibilities for operations and maintenance as well as schedules
and costs for operations and maintenance activities.
A modification to a submitted stormwater management site plan
that involves a change in stormwater management BMPs or techniques,
or that involves the relocation or redesign of stormwater management
BMPs, or that is necessary because soil or other conditions are not
as stated on the stormwater management site plan as determined by
the Township Engineer shall require a resubmission of the modified
stormwater management site plan in accordance with this chapter.
A disapproved stormwater management site plan may be resubmitted,
with the revisions addressing the Township's concerns, to the
Township in accordance with this chapter. The applicable review fee
must accompany a resubmission of a disapproved stormwater management
site plan.
The Township's approval of a stormwater management site plan authorizes the regulated activities contained in the stormwater management 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 stormwater management site plan. Terms of validity shall commence on the date the Township signs the approval for a stormwater management site plan. If an approved stormwater management site plan is not completed according to §
220-52 within the term of validity, then the Township may consider the stormwater management site plan disapproved and may revoke any and all permits. Stormwater management site plans that are considered disapproved by the Township shall be resubmitted in accordance with §
220-51 of this chapter.