(A) Approval. No construction shall commence nor building permits issued on a site until the engineering plans have been approved.
(B) Engineering plans. Engineering plans showing details of streets, alleys, culverts, bridges, storm sewers, water mains, sanitary sewers and all engineering details, other than buildings, of the proposed subdivision shall be submitted to the City Engineer along with the final plat application of the subdivision. Such plans shall be prepared by an engineer registered in the state, and shall conform to the design standards of the city.
(C) Streets, alleys, sidewalks and monuments. Copies of plans and profiles of all required streets, alleys, sidewalks, crosswalk ways and monuments shall be provided. The right-of-way and paved width of all streets and street names shall be shown, including their top of curb grade and distances with the elevations indicated at all intersections and grade breaks. Such plans shall show the location of all proposed curbs and gutters.
(D) Sanitary sewer lines. Copies of plans and profiles of proposed sanitary sewer lines, indicating depths and grades of lines, shall be provided. Minimum two foot contour intervals, the location and dimensions of existing sanitary sewer lines, manholes, and the location and size of existing mains to which the system will be connected shall be shown.
(E) Water lines.
(1) Copies of plans for all water lines in public property, valves and fire hydrants shall be provided. Minimum two foot contour intervals, the location and size of existing water lines, valves and fire hydrants, and the location and size of existing mains to which the system will be connected shall be shown.
(2) When a separate water system is planned, or when connection to a water system other than to the city water system is proposed, copies of the plans and specifications, including fire hydrants, of such system shall be provided.
(F) Drainage.
(1) Copies of the proposed plan and profiles, indicating minimum two foot contours based on city datum shall be submitted to the City Engineer and utility companies. All street widths and grades shall be indicated on the plans, and runoff figures shall be indicated on the outlet and inlet side of all drainage ditches, storm sewers and at all points in the street at changes of grade or where the water enters another street storm sewer or drainage ditch. Drainage easements shall indicate width.
(2) A general location map of the subdivision showing the entire watershed.
(3) Calculations shall show the anticipated storm water flow, including watershed area, runoff co-efficient, time of concentration, and intensity. When a drainage ditch or storm sewer is proposed, calculations showing the basis for design shall be submitted to the City Engineer;
(4) When a drainage channel or storm sewer is proposed, complete plans, profiles, cross sections, grades and specifications shall be submitted, showing complete construction details.
(Ord. 08-29, passed 10-21-2009)