(A) The person shall prepare and submit construction and post construction plans to the city for review and approval by the city. The construction and post construction plans shall meet the applicable requirements listed below.
(B) The project site owner shall develop the construction and post construction plans. Construction site storm water quality measures included in the plan must achieve the minimum project site requirements specified in § 157.019. The construction and post construction plans must include the following:
(1) Project narrative and supporting documents, including the following information:
(a) An index indicating the location, in the construction plan, of all information required by this section.
(b) Description of the nature and purpose of the project.
(c) Legal description of the project site. The description should be to the nearest quarter section, township, and range, and include the civil township.
(d) Soil properties, characteristics, limitations, and hazards associated with the project site and the measures that will be integrated into the project to overcome or minimize adverse soil conditions.
(e) General construction sequence of how the project site will be built, including phases of construction.
(f) Hydrologic Unit Code (14 Digit) available from the United States Geological Survey (USGS).
(g) A reduced plat or project site map showing the lot numbers, lot boundaries, and road layout and names. The reduced map must be legible and submitted on a sheet or sheets no larger than 11 inches by 17 inches for all phases or sections of the project site.
(h) Identification of any other state or federal water quality permits that are required for construction activities associated with the owner's project site.
(2) Vicinity map depicting the project site location in relationship to recognizable local landmarks, towns, and major roads, such as a USGS topographic quadrangle map or county or municipal road map.
(3) An existing project site layout that must include the following information:
(a) Location and name of all wetlands, lakes, and water courses on or adjacent to the project site.
(b) Location of all existing structures on the project site.
(c) One hundred year floodplains, floodway fringes, and floodways. Please note if none exists.
(d) Soil map of the predominant soil types, as determined by the United States Department of Agriculture (USDA), Natural Resources Conservation Service (NRCS) Soil Survey, or an equivalent publication, or as determined by a soil scientist. A soil legend must be included with the soil map.
(e) Identification and delineation of vegetative cover, such as grass, weeds, brush, and trees, on the project site.
(f) Land use of all adjacent properties.
(g) Existing topography at a contour interval appropriate to indicate drainage patterns.
(h) Steep slopes greater than 25% for areas adjacent to and within 200 feet of streams and natural drainage walls.
(4) Final project site layout, including the following information:
(a) Location of all proposed site improvements, including roads, utilities, lot delineation and identification, proposed structures, and common areas.
(b) One hundred year floodplains, floodway fringes, and floodways. Please note if none exists.
(c) Proposed final topography at a contour interval appropriate to indicate drainage patterns.
(d) Clearly delineated forest or vegetated buffer zones as appropriate.
(5) A grading plan, including the following information:
(a) Delineation of all proposed land disturbing activities, including off-site activities that will provide services to the project site.
(b) Location of all soil stockpiles and borrow areas.
(c) Information regarding any off-site borrow, stockpile, or disposal areas that are associated with a project site and under the control of the project site owner.
(d) Existing and proposed topographic information.
(6) A drainage plan, including the following information:
(a) An estimate of the peak discharge, based on the ten year storm event, of the project site for both preconstruction and post construction conditions.
(b) Location, size, and dimensions of all storm water drainage systems, such as culverts, storm sewers, and conveyance channels.
(c) Locations where storm water may be directly discharged into ground water, such as abandoned wells or sinkholes. Please note if none exists. Where such discharges occur they shall meet the requirements of § 157.085.
(d) Locations of specific points where storm water discharge will leave the project site and the estimated peak storm water velocity based on the ten year storm event.
(e) Name of all receiving waters. If the discharge is to a separate municipal storm sewer, identify the name of the municipal operator and the ultimate receiving water.
(f) Location, size, and dimensions of features, such as permanent retention or detention facilities, sedimentation ponds, including existing or manmade wetlands, used for the purpose of storm water management.
(7) A storm water pollution prevention plan associated with construction activities. The plan must be designed to, at least, meet the requirements of § 157.019 and must include the following:
(a) Location, dimensions, detailed specifications, and construction details of all temporary and permanent storm water quality measures.
(b) Temporary stabilization plans and sequence of implementation.
(c) Permanent stabilization plans and sequence of implementation.
(d) Temporary and permanent stabilization plans shall include the following:
1. Specifications and application rates for soil amendments and seed mixtures.
2. The type and application rate for anchored mulch.
(e) Construction sequence describing the relationship between implementation of storm water quality measures and stages of construction activities.
(f) Self-monitoring program including plan and procedures.
(g) A description of potential pollutant sources associated with the construction activities, that may reasonably be expected to add a significant amount of pollutants to storm water discharges.
(h) Material handling and storage associated with construction activity shall meet the spill prevention and spill response requirements in 327 IAC 2-6.1.
(8) The post construction storm water pollution prevention plan. The plan must include the following information:
(a) A description of potential pollutant sources from the proposed land use, that may reasonably be expected to add a significant amount of pollutants to storm water discharges.
(b) Location, dimensions, detailed specifications, and construction details of all post construction storm water quality measures.
(c) 1. A description of measures that will be installed to control pollutants in storm water discharges, as specified in § 157.085, that will occur after construction activities have been completed. Such practices include:
A. Flow reduction by use of open vegetated swales and natural depressions;
B. Buffer strip and riparian zone preservation. Note that a minimum 50-foot buffer strip shall be maintained from the high water mark of a river, lake, stream, or natural drainage way;
C. Filter strip creation;
D. Minimization of land disturbance and surface imperviousness;
E. Maximization of open space;
F. Storm water retention, detention and sedimentation ponds; and
G. Special considerations for sensitive areas to mitigate impacts that may occur, including redirecting natural water courses and meeting special zoning requirements for such areas.
2. Note: Item B above is mandatory for all construction plans where applicable. Buffer strips shall be maintained along all streams which appear as a continuous or dotted blue line on a 7.5-Minutes Series (topographical) USGS quadrangle map showing the development. Reference § 157.085 for buffer strip design standards.
3. Note: Items A and C through G may be used alone or in combination as required to meet compliance with pollutant removal and velocity requirements of § 157.085.
(d) A sequence describing when each post construction storm water quality measure will be installed.
(e) Storm water quality measures that will remove or minimize pollutants from storm water runoff.
(f) Storm water quality measures that will be implemented to prevent or minimize adverse impacts to stream and riparian habitat.
(g) A narrative description of the maintenance guidelines for all post construction storm water quality measures to facilitate their proper long term function. This narrative description shall be made available to future parties who will assume responsibility for the operation and maintenance of the post construction storm water quality measures.
(C) The SWCD or the city may, upon finding reasonable cause, require modification to the construction and post construction plans if they are determined to be necessary due to site conditions or project design changes. Revised plans, if requested, must be submitted to the appropriate entity within 21 calendar days of a request for a modification.
(Ord. 37-2005, passed 10-11-05) Penalty, see § 157.999