460.100 Improvements in Subdivisions.
The following improvements shall be installed at the expense of the subdivider and at the time of subdivision.
A. Streets: Public streets, including alleys, within the subdivision and public streets adjacent but only partially within the subdivision shall be improved. Catch basins shall be installed and connected to drainage tile leading to storm sewers or drainage ways. Upon completion of the street improvement, monuments shall be reestablished and protected in monument boxes at every public street intersection and all points of curvature and points of tangency of their center lines.
B. Surface Drainage and Storm Sewer System: Drainage facilities shall be provided within the subdivision and to connect the subdivision drainage to drainage ways or storm sewers outside the subdivision. Design of drainage within the subdivision, as provided by the City Engineer, shall take into account the capacity and grade necessary to maintain unrestricted flow from areas draining through the subdivision and to allow extension of the system to serve such areas.
C. Sanitary Sewers: Sanitary sewers shall be installed to serve the subdivision and to connect the subdivision to existing mains. In the event it is impractical to connect the subdivision to the City trunk system, the Planning Commission may recommend to the City Council and the City Council may authorize by appropriate ordinance to which the emergency clause will not be attached after public hearing before the Council, if public need and necessity be shown, the use of septic tanks if lot areas are adequate considering the physical characteristics of the areas and if sewer laterals designed for future connection to a sewage disposal system are installed and sealed. Design by the City Engineer shall take into account the capacity and grade to allow for desirable extension beyond the subdivision.
If required sewer facilities will without further sewer construction directly serve property outside the subdivision, the following agreements will be made to equitably distribute the cost:
(1) If the area outside the subdivision to be directly served by the sewer line has reached a state of development to justify sewer installation at the time, the Planning Commission may recommend to the City Council construction as an assessment project with such arrangement with the subdivider as is desirable to assure financing his share of the construction.
D. Water System: Water lines and fire hydrants serving each building site in the subdivision and connecting the subdivision to City mains shall be installed. The City Engineer's design shall take into account provisions for extension beyond the subdivision and to adequately grid the City system.
E. Sidewalks: Sidewalks shall be installed on both sides of a public street and in any special pedestrian way within a development or a subdivision, except that in the case of primary or secondary arterials, or special type industrial districts, the Planning Commission may approve a subdivision without sidewalks if alternative pedestrian routes are available and if they provide safe, convenient and reasonably direct pedestrian circulation. On local City streets concrete sidewalks, five (5) feet wide (6 feet in commercial areas), separated from the street by a 4-5 foot wide planter strip for approved, uniformly planted street trees, are required. In the event a pathway is preferable for access, multi-use pathways shall be eight (8) feet wide, asphalted or compacted gravel to meet ADA standards. Pathways shall be located in a 20 foot wide public easement. On County streets, sidewalks shall be provided in accordance with Multnomah County Street Standards and regional street design standards.
F. Bicycle Routes: If appropriate to the extension of a system of bicycle routes, existing or planned in compliance with the City, County or Regional Transportation Plans, the Planning Commission may require the installation of separate bicycle lanes within streets and separate bicycle paths. Existing and planned bicycle routes in the City as illustrated in the City Transportation System Plan, shall be built to Multnomah County bicycle path standards.
G. Street Name Signs: Street name signs shall be installed at all street intersections in a manner provided by pertinent City regulations.
H. Street Lights: Street lights shall be installed by the developer and shall be served from an underground source of supply. Street light style shall be approved by the City.
I. Other: The developer shall make necessary arrangements with utility companies or other persons or corporations affected for the installation of underground lines and facilities. Electrical lines and other wires, including but not limited to communication, street lighting and cable television, shall be placed underground.