Improvements required in this chapter shall be designed and installed under the direction of a registered professional engineer governed by the Standard Specifications for Roads and Municipal Construction as published by the Washington State Department of Transportation and the Washington Chapter of the American Public Works Association (APWA), 1998 Edition. All required construction or utility extensions shall be at the expense of the owner or developer of the subdivision or short subdivision. The city will require a professional certificate by the responsible engineer that the completed facilities are in material compliance with the approved plans and specifications.
(Ord. 1122 § 2, 1996; Ord. 1244 § 14, 2000)
Land being prepared for subdivision must be free of stumps, logs, limbs and other buried debris along the entire width and length of every proposed street right-of-way and utility easement, to a minimum depth of five feet.
(Ord. 1122 § 2, 1996)
(a) 
Dedication. All streets and rights-of-way shall be dedicated to the city unless otherwise approved.
(b) 
Type, Width and Design. See Streetscape Design Standards and Guidelines adopted pursuant to Chapter 22.65 FMC for requirements relating to street types, widths and designs.
(c) 
Grading. All streets shall be graded from property line to property line. Fill slopes shall be flatter than 4:1. Finished street grade will conform to the approved plan. Street grade will not be less than one-half of one percent to permit free flow of stormwater, nor greater than 12 percent. Maximum and minimum street grades and slopes may be exceeded where the terrain will not permit installation of streets within specified limits, or for other good reasons as determined by the city.
(d) 
Adjacent Unimproved Streets. Where a plat borders or abuts upon unimproved streets not included within the limits of the plat, a developer, pursuant to written agreement with the city, shall complete said street or set aside in trust such sum per lot in the ultimate cost of improving such street. The trust funds shall be applied to the cost of the ultimate improvements of such streets if improved within six years from the date of such agreement or, at the expiration of such six-year period, shall be refunded to the developer, or, if the developer has assigned his or her rights to the refund to the purchasers of the lots, the trust funds shall be refunded to the then owners of the lot or lots for which such trust fund is created.
(e) 
Preparation of Roadbed. The surface of roadway shall be true to line, grade and section indicated on the approved plans and thoroughly compacted (95 percent maximum density per Section 2-03.3(14)D of the APWA standards) before base material is placed. Roadbed or subgrade preparation shall conform to Division 2-06 of the APWA standards. Base material shall not be placed until:
(1) 
The city has inspected and approved the material and the grade upon which it is to be placed. The city may require certification that the furnished materials comply with appropriate state specifications;
(2) 
The sidewalk areas, the curb excavation, side streets and driveway approaches, where indicated, have been shaped, dressed, and ballast subgrade entirely completed;
(3) 
All under-the-street utilities located in minor trenches less than four feet in depth shall be installed and compacted with backfilled, crushed, surface grade materials (per Section 9-03.9(3) of the APWA standards). Major trenching for utilities may be engineered and made with engineered backfill according to Section 7-10.3(11) and Section 2-09.3(1) of the APWA standards. Base course shall be crushed gravel with a minimum compacted depth of nine inches (95 percent maximum density per Section 2-093.3(14)(D) of the APWA standards) and will extend under the curb lines. Engineering analysis may be accepted to reduce this depth, where appropriate.
(f) 
Street Surface. Roadway top course will be crushed surfacing (per Section 9-03.9(3) of the APWA standards) with a minimum compacted depth of two inches (95 percent WSDOT No. 66 per APWA standards). Wearing surface of roadway shall be asphaltic concrete pavement, with a minimum compacted depth of two inches. Aggregate materials shall conform to Sections 9-03.9(1), 9-03.8(2) and 9-03.8(3) of the APWA standards. Asphaltic materials and construction methods shall conform to Division 5-04 of the APWA standards. Roadway will be inspected by the city after installation of crushed rock, and again after surfacing with asphaltic concrete.
(Ord. 1122 § 2, 1996; Ord. 1244 § 15, 2000; Ord. 1575 § 8, 2016)
(a) 
Specifications. All sidewalks shall be constructed in accordance with applicable city, state and federal regulations governing the use, construction or repair of city sidewalks. Construction materials and methods for curb, gutter and sidewalks shall conform to state specifications and standard drawings.
(b) 
Design. See streetscape design standards and guidelines adopted pursuant to Chapter 22.65 FMC for requirements relating to sidewalk design.
(c) 
Location. Sidewalks shall be constructed on both sides of all public and private streets, except where the city determines that due to topography or other physical or environmental constraints, such construction would be infeasible or contrary to the public interest. The city may also waive the sidewalk requirement on one side of a public or private local street or access lane within a planned development, small lot development, or other residential development subject to site plan approval, when no dwelling units will be constructed on that side of the street and the city has determined that a sidewalk is not required on this street segment to provide access to adjoining open space, recreational facilities or other properties. The city may also waive the sidewalk requirement on one side of an access lane when such street provides access to not more than six dwelling units, provided the city makes a determination that such design will allow for the provision of safe and functional pedestrian circulation within the development. The city may require a walkway, path or other pedestrian facilities to be constructed at an alternative location in lieu of a sidewalk constructed parallel to the street in order to ensure continuous pedestrian connections throughout a planned development, small lot development, or other residential development subject to site plan approval.
(Ord. 1122 § 2, 1996; Ord. 1244 § 16, 2000; Ord. 1575 § 9, 2016)
After curbs are installed, area from curbs for a distance of eight feet to property line will be filled to curb level. Power, gas, telephone and CATV main lines and stubs may be installed after backfill behind curbs is accomplished. Crushed surface course (5/8 - 3/4'' minus) shall be used as backfill in all minor trenches to base of curb and sidewalk improvements.
(Ord. 1122 § 2, 1996)
All water mains and sanitary sewers shall be installed with individual service connections to each parcel or building site. All storm sewers shall be installed. All utilities shall be installed prior to grading or paving of streets. Construction methods and materials shall conform to Division 7 and 9, State Specifications, with engineered backfill of all major trenching conforming to Section 2-09.3(1)E of the APWA standards.
(Ord. 1122 § 2, 1996; Ord. 1244 § 17, 2000)
All electrical and telephone distribution systems and service installed in those areas which shall be subdivided and developed within the corporate limits of the city shall be placed underground in accordance with all other applicable city ordinances. Construction methods and materials shall conform to Division 7 and 9, State Specifications, per APWA standards.
(Ord. 1122 § 2, 1996; Ord. 1244 § 18, 2000)