“AASHTO”means American Association of State Highway and Traffic Officials.
“Access”means a portion of a driveway or private road that connects from the edge of a City Road extending to edge of the right-of-way (see also "Road Approach").
"Access road"means a public or private road providing vehicular access to the boundary of a parcel of real property being proposed for development.
“ADA”means the Americans with Disabilities Act.
“Adjacent”means abutting public roads, streets, right-of-way or easements in which street system improvements are installed or directly connecting to street system improvements through an interest in real property such as an easement.
Administrator.When used in this title the Administrator shall mean the City Engineer.
“ADT”means Average Daily Trips. When used as a threshold to determine classification size of private road, ADT shall be based on current and buildout of proposed development that will be or are served by the private road.
“Applicant”means the person, firm, partnership, corporation, or other legal entity that proposes to develop property in the City of Langley by submitting an application for any of the activities covered by these Standards.
"APWA"means American Public Works Association.
"Average daily traffic" or "ADT"means the average number of vehicles passing a specified point during a 24-hour period. "Annual average daily traffic (AADT)" denotes that daily traffic that is averaged over one calendar year. ADT to be calculated using standard methodology.
“Benefit area”means that area which includes all parcels of real property adjacent to street system improvements or likely to require connection to or service by utility system improvements constructed by a developer.
“Berm”means an earthen mound designed to provide visual interest, screen undesirable views, decrease noise or separate incompatible uses.
"Best management practice" or "BMP"means physical, structural, and/or managerial practices that, when used singly or in combination, prevent or reduce pollution of water. BMPs are listed and described in the Manual.
“Center Line”means the line, marked or unmarked, parallel to and equal distance from the sides of a two-way traffic roadway except where otherwise indicated by painted lines or markers.
“City”means the jurisdictional boundaries of City of Langley.
"Clearing"means (per DOE Tech Manual) the destruction and removal of vegetation by manual, mechanical, or chemical methods.
“Clear Zone”means the total roadside border area, starting at the edge of the traveled way, available for safe use by errant vehicles. This area may consist of a shoulder, a recoverable slope, a nonrecoverable slope, and/or a clear run-out area. The desired width is dependent upon the traffic volumes, design speed and the roadside geometry.
"Collector road"means a road whose function is to collect traffic from neighborhoods and local streets and which connects to another road of equal or greater classification. A collector also may provide direct access to adjacent properties.
"Common approach"means a shared approach serving no more than two lots/units. A common approach does not have to straddle a common property line.
"Complete street"means a road that is designed to be safe for drivers, bicyclists, transit vehicles and users, and pedestrians of all ages and abilities. The complete streets concept focuses not just on individual roads but on changing the decision-making process so that all users are routinely considered during the planning, designing, building and operating of all roadways.
“Construction Plans”means the plans, profiles, cross sections, elevations, details, and supplementary specifications, signed by a licensed professional Engineer and accepted by the City Engineer, which show the location, character, dimensions, and details of the work to be performed.
"Critical drainage area"includes those mapped sensitive areas as hereinafter identified in the Langley Comprehensive Stormwater Management Plan, June 1994, and those areas where sufficient justification is demonstrated by the city engineer, in which flooding, drainage, erosion and/or instability hazards exist and the welfare and safety of the surrounding community would be threatened by increasing the volume and/or rate of surface water discharge from a developing parcel.
"Cul-de-sac"means a dead-end road having a primary function of serving adjoining land and constructed with a turn-around at its end (local access road).
“Department”means the City of Langley Department of Public Works, unless otherwise noted.
"Design engineer"means an individual licensed by the state of Washington to practice civil engineering and who has been retained to design land development improvements.
“Design Manual”means the most current edition of the “Design Manual” published by the Washington Department of Transportation.
"Design storm"means a rain storm of a particular intensity and duration used in storm drainage analysis and system design.
"Design storm frequency"means the probability of a design storm occurring, expressed in terms of a statistical probable yearly interval of occurrence.
"Developer"means any person, firm, partnership, association, joint venture, or corporation or any other entity responsible for a given project.
"Development coverage"means all developed surface areas within subject property, including but not limited to rooftops, driveways, carports, accessory buildings, and parking areas.
"Drainage area"means the watershed (acreage) contributing surface water within the subject property.
"Drainage plan"means a plan for receiving, handling, and transporting surface water within the subject property and may extend sufficiently downstream to assure adequate control of potential detrimental effects.
"Easement"means the right to use a defined area of property for a specific purpose/purposes as set forth in the easement document, on a plat or short plat, or as required for purposes as set forth herein, and recorded with the Island County auditor.
“Edge Lane Road (ELR)”means a roadway that provides usable shoulders for bicyclists and pedestrians where the travel lane is otherwise too narrow to accommodate them. The shoulders are delineated by pavement markings and may include contrasting pavement color. Motorists may enter the shoulder only when no bicyclists or pedestrians are present and must overtake these users with caution due to potential oncoming traffic. Also known as an “Advisory Shoulder.”
“Facility”means elements of roadways, utilities, and drainage that are built, installed, or established for a particular purpose.
"Filling"means any deposit of earth material, rubble, or demolition wastes placed by artificial means.
“Franchise agreement/permit”means a permit that the City of Langley issues to a utility provider to construct, install, repair, or maintain utility line, facility, or system located in the City right-of-way.
"Generalized plan"means a plan delineating the contiguous property within one ownership and property delineating natural drainage ways and existing roadway systems as well as indicating a conceptual plan for drainage facilities or improvements thereto, and a suitable access plan for the remnant parcel(s) when topography/development and policies could reasonably be expected to limit locations and number of approaches to public roads. It is not to be construed as a binding site plan.
“Grade”means rate or percent of slope, either ascending or descending from or along the roadway. It is measured along the centerline of the roadway.
"Grading"means any clearing, excavating, or filling, exposing of soil by the removal of live vegetation and/or vegetative debris for nonagricultural purposes, or combination thereof.
"Ground cover"means small plants such as salal, ivy, ferns, mosses, grasses or other types of vegetation which normally cover the ground and shall include trees less than four inches in diameter measured at 24 inches above the ground level.
"Half street"means a street constructed along an edge of development utilizing half the regular width of the right-of-way.
"Home site evaluation"means a report prepared by a qualified professional geologist/registered soils engineer which addresses the feasibility/safety of structural improvements within/adjacent to unstable slope areas, citing specific recommendations/conclusions, including but not limited to structure placement, foundation design, drainage and geological stability of the site for the intended use. Such reports shall be site- and development-specific.
“IBC”means the International Building Code.
“IFC”means the International Fire Code.
"Impervious"means a surface which cannot be easily penetrated. For instance, rain does not readily penetrate paved surfaces.
“In-Fill Development”means the construction of buildings or other facilities on previously unused or underutilized land located in an existing urban areas to increase density near services and infrastructure.
“Inspector”means an authorized representative of the Public Works Department assigned to conduct field inspections during various stages of land use development activities to ensure compliance with accepted plans and the Standards of this Title.
"Interceptor"means a sewer that receives flow from a number of mains or trunk sewers, force mains, etc.
“Intersection Sight Distance”means the sight distance required for a vehicle at a stopped position on the minor road or driveway to view an oncoming vehicle traveling at the speed limit on the major road and appearing after the movement has begun, and safely enter or cross the major road.
“ITE”means the Institute of Transportation Engineers.
"Land clearing"means the act of removing or destroying trees or ground cover from any undeveloped or partially developed lot, public lands or public right-of-way.
“Land Use Development Activity”means any land disturbing activity requiring a land use permit or SEPA review from City of Langley including, but not limited to, site plan reviews, short- and long-plats, plat alterations, boundary line adjustments, conditional use permits, unit lot subdivisions, and binding site plans. Further definitions of these permits can be found in Titles 17 and 18.
“Level of Service (LOS)”means a term used to qualitatively describe the operating conditions of a multi-modal roadway based on factors such as speed, travel time, maneuverability, delay, and safety for all users motorized and non-motorized.
"LID Manual"means the Low Impact Development Technical Guidance Manual for Puget Sound.
"LMC"means the Langley Municipal Code.
"Loop road"means a road of limited length forming a loop having a beginning and ending on the same road, having no other intersecting road, and having as its primary function the provision of direct access to adjoining properties (local access road).
"Low-impact development"means a stormwater management and land development strategy applied at the parcel and subdivision scale that emphasizes conservation and use of onsite natural features integrated with engineered, small-scale hydrologic controls to more closely mimic pre-development hydrologic functions.
“MUTCD”means the Manual on Uniform Traffic Control Devices.
"Neighborhood access"means a road whose primary function is to provide access to adjoining properties, but which also provides for traffic circulation within and/or through a neighborhood (local access road).
"Peak discharge"means the maximum surface water runoff rate (cfs) determined for the design storm frequency.
"Pervious surface"means a surface which can be easily penetrated. For instance, rain can easily penetrate gravelly soils.
"Private sewer"means any portion of the sewer system located on private property where no easements are granted to the city and/or the line has not been deeded to the city.
"Private street"means privately owned and maintained vehicular access provided for by an access tract, easement, or other legal means to serve more than two parcels.
"Project"is a general term encompassing all phases of the work to be performed and is synonymous to the term "proposal" or "work."
“Public Roadways”means publicly owned and maintained facility providing access, including the roadway and all other improvements inside the right-of-way.
Major Collector Roadway: See Section 15.01.470 for definition. |
Minor Collector Roadway See Section 15.01.470 for definition. |
Local Access Roadway: See Section 15.01.470 for definition |
"Public sewer"means that portion of the system located within public rights-of-way and/or easements and which is owned, operated and maintained by the city.
"Residential/detention facilities" or "source control BMP"means a BMP that is intended to prevent pollutants from entering stormwater. A few examples of source control BMPs are erosion control practices, maintenance of stormwater facilities, and constructing roofs over storage and working areas.
"Right-of-way"is a general term denoting public land, property, or interest therein (e.g., an easement) acquired for or devoted to a public street, public access or public use.
“Road Approach”means a vehicle driving surface that provides a transition between the following: A City Road and a driveway; a City Road and a private road; a City road and a commercial use; a City Road and an agricultural use; a City Road and a temporary use; or a City Road and a shared-access facility subject to an access permit issued by the City of Langley.
“Road Prism”means any portion of roadway, including but not limited to road surface, shoulders, cut/fill slopes, culvert, walls, ditches, bridges, signing, etc.
"Roadside"means the portion of an easement or right-of-way lying on either side of the roadway, including curbs, sidewalks and ditches.
"Roadway"means the improved portion of an easement of right-of-way, excluding curbs, sidewalks and ditches.
“SEPA”means the (Washington) State Environmental Policy Act.
“Shared Street”means a street designed to serve pedestrians, bicyclists, and motor vehicle traffic in the same slow-speed travel area. Shared streets serve bidirectional motor vehicle traffic without lane markings in the roadway travel area. Also known as a “Yield Roadway.”
“Shared-Use Path”means a facility physically separated from motor vehicle traffic by an open space or barrier and typically within the City right-of-way or within an independent right-of-way. Shared-Use Paths may be used by pedestrians, skaters, wheelchair users, joggers, and other non-motorized users.
"Side casting"means the act of moving excavated waste material and vegetative debris to the side and subsequently depositing or dumping such material over the side of a shoreline bluff or natural drainage way.
“Sidepath”means a facility physically separated from motor vehicle traffic by an open space and typically within the City right-of-way along a street. Sidepaths may also be used by pedestrians, wheelchair users, joggers, and other low speed non-motorized users. Sidepaths are not intended for bicycles.
"Side sewer" or "building sewer"means that portion of the sewer line beginning two feet outside the outer foundation wall of the structure to the sanitary sewer main.
"Sidewalk"means that portion of a street or highway, beyond the curb or edge of roadway pavement, that is intended for use by pedestrians, including pedestrians with disabilities.
"Special provisions"means road construction requirements peculiar to a specific project and which are not otherwise thoroughly or satisfactorily detailed and set forth in the standard specifications.
Standard Plans.Unless otherwise noted, “Standard Plans” shall be referring to City of Langley Standard Plans.
"Street frontage"means the distance between the two points where the lot lines intersect the boundary of public or private street right-of-way.
"Structure"means that which is built or constructed, an edifice or building of any kind or any piece of work artificially built up or composed of parts joined together in some definite manner, but not to include utilities for the purpose of this chapter.
"Subject property"means the tract of land which is the subject of the permit and/or approval action.
“Surveyor”means a professional land surveyor licensed by the State of Washington
“Target Speed”means a speed determined for design and correlation of the physical features of a roadway that influence vehicle operation to achieve a balance of motoring and active transportation safety and mobility.
"Technical Manual"means the Stormwater Management Manual for the Puget Sound Basin prepared by the Washington Department of Ecology.
"Trail"means an improved but natural path or way set aside for public and private use providing an access route to, from or between points of interest and intended for use by pedestrians, equestrians, bicycles and/or other nonmotor vehicular users.
"Tree"means any living woody plant characterized by one main stem or trunk and many branches, and having a diameter of four inches or more measured at 24 inches above the ground level.
Use of Pronoun.As used herein, the singular shall include the plural, and the plural the singular; any masculine pronoun shall include the feminine or neutral gender and vice versa; and the term "person" includes natural person or persons, firm, partnership, corporation or association, or combination thereof.
“Utility”means (1) a privately, publicly, or cooperatively owned line, facility, or system for producing, transmitting, or distributing communications, cable television, power, electricity, light, heat, gas, oil, water, steam, sanitary sewer, storm drainage, or any other similar commodity which directly or indirectly serves the public; (2) the privately, publicly, or cooperatively owned company that owns the line, facility, or system.
"Walkway"means a pedestrian access which is constructed of asphalt concrete pavement. Walkways may be located in right-of-way or on private property and may be connected to or separate from a street.
"Wetlands"means wetlands as defined in Chapter
16.20 as it now exists or is hereafter amended.
“Work Within the Right-of-Way Permit”means a permit issued by the City of Langley authorizing an applicant to construct, install, repair, or maintain any facility or improvement – other than a utility or access – within a City right-of-way, or to use the right-of-way in a manner that impedes or affects pedestrian or vehicular traffic.
"WWHM3"means the Western Washington Hydrology Model, Version 3.
(Ord. 743, 1997; Ord. 862, 2005; Ord. 921, 2009; Ord. 970 § 1, 2012; Ord. 1139, 12/1/2025)