(A) The subdivider shall submit the following information to the Finance Officer with the plat application:
(1) A preliminary plat indicating the layout of all property lines, lots, streets, easements, watercourses, parks and open spaces within the proposed subdivision. This plat should show the subdivision’s relation to any surrounding development, including property lines, streets and recorded utility easements or visible utilities;
(2) If any portion of the platted area falls within any area of special flood hazard as identified by FEMA, a note shall be placed on the plat which states “Flood Insurance Rate Map Panel ____with an effective date of _________ indicates the presence of a flood hazard area within the subdivision area represented on this plat”; and
(3) If the proposed subdivision does not adjoin an existing county, state or federal highway or town street, the developer must provide evidence to the Planning and Zoning Commission and governing body that a street that meets current town street specifications exists within a public right-of-way that connects the proposed subdivision with such a highway. If a Road District Association governs the connecting street, then the developer shall petition the Association to add all land within the proposed subdivision to the district or enter into a street maintenance agreement with that Road District Association.
(B) The following supplemental materials may be required at the request of the Planning and Zoning Commission or the governing body.
(1) Narrative on the intended development. The narrative will describe the nature of the intended development, its integration into surrounding development, and its impact on the community. Any contemplated future development shall be included.
(2) Street design plans.
(a) Public streets may be required to be designed under the direction of a professional engineer whose seal shall be affixed to all drawings as stipulated in SDCL § 36-18A-45.
(b) The Town Engineer shall recommend the content of street design plans, which may include, but are not limited to, the following:
1. Plan and profile drawings are to be prepared for all proposed public streets within the subdivision;
2. The plan view shall indicate stationing, centerline, the location of drainage structures, guardrails, signage, horizontal curve data, super-elevation, street right-of-way, horizontal control points, property corners and other significant features;
3. The profile view shall indicate the existing centerline grade, the finish centerline grade, the exact location and elevation of all vertical curves, the location of drainage structures and the estimated amount of cut and fill;
4. Cross-sections are to be drawn at every full station and every major break in grade. They are to show existing and finish ground lines. Cross-sections are to be drawn at all points where a drainage structure crosses the street. The drainage structure is to be shown; and
5. As-built construction drawings prepared by a professional engineer.
(3) Bridge plans. Bridges are to be designed by a professional engineer.
(4) Plans for proposed water and sewer systems. Plans for any proposed water and sewer systems indicating points of connection with existing municipal systems, valve locations, meter types and locations, pipe sizes and locations, proposed tap fees and other pertinent information that may be requested by the Town Engineer or governing body.
(5) Engineer’s report on private water systems, sewer systems and significant hydrologic problems. Small and individual on-site wastewater disposal systems shall conform to regulations established by the state in ARSD 74:53:02 and by County Ord. 2.
(6) Soil erosion and sediment control plans. Soil erosion and sediment control plans are to be prepared under the direction of a professional engineer whose seal shall be affixed to the documents as stipulated in SDCL § 36-18A. The Town Engineer shall recommend the content of the plans, which may include (but are not limited to) the following:
(a) A scaled, topographic survey map of the proposed subdivision site showing proposed lot lines and five-foot contour intervals;
(b) A soil erosion control plan showing locations and areas of anticipated soil disturbance and the proposed erosion control structures and practices that will be used to control the anticipated erosion;
(c) A sediment control plan detailing the structures and practices that will be applied to control sediment generated by on-site erosion;
(d) Proof of acceptance by DENR of these plans; and
(e) A seeding and planting plan for any screening strips or other landscaped areas required by the governing body.
(7) Storm drainage plan. The storm drainage plan shall be made under the direction of a professional engineer. Storm drainage structures are to be designed to withstand the effects of a 25-year, 24-hour rainfall. The Town Engineer shall recommend the content of the plan, which may include (but is not limited to) the following:
(a) The location of all proposed drainage ways, streams and ponds within the subdivision;
(b) The location and size of proposed and existing drainage structures, including culverts, bridges, pipes and drop inlets;
(c) The area of land contributing runoff to each drainage structure;
(d) The location of easements, rights-of-way and maintenance access for all drainages;
(e) The direction of water flow throughout the subdivision; and
(f) With prior approval of the Town Engineer, the drainage plan may be combined with the street design plan.
(8) Electronic plat map. The plat preparer may be required to submit an electronic copy of the plat map in AutoCadd (.dwg) file format.
(a) The electronic copy shall include:
1. A complete layout of the subdivision, including lot and block numbers, street names, public right-of-way width dimensions, all lot lines with length and bearing data, and water and sewer main line locations;
2. The subdivision layout must be tied to a minimum of two existing town control points and the northing and easting data from the points provided;
3. Notes on special items such as easements and lift stations; and
4. The size and type of material of all water and sewer main lines.
(b) The electronic copy shall be submitted with the final plat and be subject to review and approval of the Town Engineer.
(c) The Town Engineer shall determine the media, content and format of all electronic data to be submitted.
(9) Other supplemental data. If the property involves areas where the soil characteristics, terrain, drainage, geology, ground cover or location imposes unusual requirements, the Planning and Zoning Commission may request additional supplementary data to demonstrate the feasibility of subdividing the land.
(Ord. 10.9, passed - -2005)