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sanitary sewers to serve the subdivision are available. 2. Storm Sewers: Storm sewers shall be constructed to serve all properties in the subdivision where a connection to the City storm sewer system is available or where detailed plans and specifications for storm sewers to serve the subdivision are available. Where drainage swales are necessary, they shall be sodded in accordance with subsection 1102.06E4. 3. Neighborhood Grading and Drainage Plan: The developer will submit a Neighborhood Grading and Drainage Plan (similar to plan submitted to F.H.A.) indicating the elevation of proposed houses, surrounding ground and the direction of flow. The developer will adhere to this plan, and the developer shall obtain prior written acceptance from the Public Works Director before any changes can be made. 4. City Participation in Cost: Where sewer mains are larger than required to serve the subdivision as delineated in the preliminary plan, the City may elect to participate in the cost of such sewer mains. B. Water Supply: Where a connection to the City water system is presently available, water distribution facilities including pipe fittings, hydrants, valves, etc., shall be installed to serve all properties within the subdivision. Water mains shall be a minimum of six inches in diameter and where larger mains are required to serve future growth, the City may elect to participate in the cost of such water mains. Looping of all water mains shall be required and shall conform to the City Master Plan. C. Street Grading: The full width of the right of way shall be graded, including the subgrade of the areas to be paved, in accordance with the plans approved by the Public Works Director and in accordance with the applicable requirements for street construction of the City. (Ord. 216, 7-5-56) Street Improvements 1: 1. All streets shall be improved with pavements to an overall width in accordance with the projected 20 year traffic volumes and consistent with street width policy adopted by the City Council. (1995 Code) 2. All pavements shall be constructed in accordance with the provisions of applicable requirements of the City. 3. Concrete curbs and gutters on all streets within the subdivision shall be constructed in accordance with applicable requirements of the City. 4. In congested traffic areas or in areas where the City Council deems necessary for the health, safety and general welfare of this community, sidewalks, to a width of not less than five feet and constructed of Portland cement concrete, shall be required. 5. Storm water inlets and necessary culverts shall be provided within the roadway improvement at points specified by the Public Works Director. 6. All curb corners shall have a radii of not less than 15 feet, except at collector and marginal access streets where they shall be not less than 25 feet. 7. All parkways within the dedicated street area shall be graded and sodded in an approved manner. (Ord. 216, 7-5-56; amd. 1995 Code) (Ord.1358, 1-28-2008) E. Off-Street Improvements: 1. One tree having a trunk diameter (measured 12 inches above ground) of not less than 2 % inches shall be planted in a naturalistic way in the front yard of each lot in the subdivision, except that corner lots shall have 2 trees. They shall be accepted by the City only after one growing season as a live and healthy plant. Trees shall not be allowed to be planted in the boulevard area. 2. Driveways must be constructed of pavement approved by the Public Works Director. Each driveway shall be graded within the dedicated area to fit the boulevard section, and shall be a minimum of 12 feet in width in the boulevard area (excluding radii). The construction shall conform to City requirements, and the grade of the driveway shall conform to the requirements of the State Building Code. 3. The entire boulevard area, except driveways, shall be sodded with a good quality weed free sod. 4. All drainage swales shall be graded and sodded with a good quality weed free sod. (1990 Code; amd. 1995 Code) F. Pedestrianways 1: Pedestrianways installed or required by the City Council, shall be constructed 'See also Chapters 703 and 704 of this Code.