A.
Appropriate sections from Chapter 395, Subdivision and Land Development, 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 Part 1. 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(3)(i) below.
(2)
The following signature block for the Municipality:
"(Municipal official or designated plan reviewer (§ 385-19A), 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." |
(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 municipal current Flood Insurance Rate Maps.
(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 Part 1.
(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.