The terminology in this chapter shall have the meanings described as follows:
“Best management practices (BMPs)”means schedules of activities, prohibitions of practices, maintenance procedures, and structural and/or managerial practices approved by the Washington State Department of Ecology that, when used singly or in combination, prevent or reduce the release of pollutants and other adverse impacts to waters of Washington State.
“City”means Poulsbo, Washington, or as indicated by the context, the public works director or other authorized representative of the governmental authority of the city of Poulsbo.
“Director”means the engineering director, public works director, or other designated staff person(s) charged with the responsibility for implementation of this chapter or any of its sections.
“Hard surface”means an impervious surface, a permeable pavement, or a vegetated roof.
“Impervious surface”means a nonvegetated surface area that either prevents or retards the entry of water into the soil mantle as under natural conditions prior to development. A nonvegetated surface area which causes water to run off the surface in greater quantities or at an increased rate of flow from the flow present under natural conditions prior to development. Common impervious surfaces include, but are not limited to, rooftops, walkways, patios, driveways, parking lots or storage areas, concrete or asphalt paving, gravel roads, packed earthen materials, and oiled, macadam or other surfaces which similarly impede the natural infiltration of stormwater. Open, uncovered retention/detention facilities shall not be considered as impervious surfaces for purposes of determining whether the thresholds for application of minimum requirements are exceeded. Open, uncovered retention/detention facilities shall be considered impervious surfaces for purposes of runoff modeling.
“Land disturbing activity”means any activity that results in a change in the existing soil cover (both vegetative and nonvegetative) and/or the existing soil topography. Land disturbing activities include, but are not limited to, clearing, grading, filling, and excavation. Compaction that is associated with stabilization of structures and road construction shall also be considered a land disturbing activity. Vegetation maintenance practices, including landscape maintenance and gardening, are not considered land disturbing activity. Stormwater facility maintenance is not considered land disturbing activity if conducted according to established standards and procedures.
“LID Manual”means the Low Impact Development: Technical Guidance Manual for Puget Sound, December 2012, adopted by the city for stormwater management pursuant to Chapter
12.02 “Low impact development (LID)”means a stormwater and land use management strategy that strives to mimic predisturbance hydrologic processes of infiltration, filtration, storage, evaporation, and transpiration by emphasizing conservation, use of on-site natural features, site planning, and distributed stormwater management practices that are integrated into a project design.
“Maintenance”means repair and maintenance activities conducted on currently serviceable structures, facilities, and equipment that involve no expansion or use beyond that previously existing and results in no significant adverse hydrologic impact. It includes those usual activities taken to prevent a decline, lapse, or cessation in the use of structures and systems. Those usual activities may include replacement of dysfunctional facilities, including cases where environmental permits require replacing an existing structure with a different type structure, as long as the functioning characteristics of the original structure are not changed.
“Maintenance covenant”means a legally recorded binding agreement between the city of Poulsbo and the person(s) holding title to a property served by a stormwater facility whereby the property owner agrees to operate and maintain certain stormwater facilities in accordance with city standards and codes; annually inspect the stormwater facilities, perform any required maintenance, and submit a report of the inspection and maintenance to the city; grants the city the right to enter the subject property to inspect the stormwater facilities to determine that the facility is properly maintained and functioning, and to make certain repairs or perform certain maintenance procedures on the stormwater control facilities when such repairs or maintenance have not been performed by the property owner when directed to do so by the city; and agrees to reimburse the city for the cost should the city perform such repairs or maintenance.
“Maintenance plan”means a compilation of maintenance-related policies, standards, responsibilities, procedures, schedules, manuals, and practices developed by the director to implement this chapter.
“New development”means land disturbing activities, including Class IV general forest practices that are conversions from timber land to other uses; structural development, including construction or installation of a building or other structure; creation of hard surfaces; and subdivision, short subdivision and binding site plans, as defined and applied in Chapter
58.17 RCW. Projects meeting the definition of redevelopment shall not be considered new development.
“NPDES permit” (“National Pollutant Discharge Elimination System stormwater discharge permit”)means the permit issued by the Washington State Department of Ecology on January 17, 2007, to the city of Poulsbo that authorizes the discharge of pollutants to waters of the United States. It shall also mean any permit appendices, subsequent modifications, and new permits for subsequent permit terms issued by the Washington State Department of Ecology. Also known as “Western Washington Phase II municipal stormwater permit.”
“Off-site drainage analysis”means a study of those land areas contributing surface runoff to a development site as well as a study of the existing and predicted impacts of surface runoff from the development site on properties and drainage features that have the potential to receive stormwater from the development site.
“Operation and maintenance manual”means a written manual, prepared by a qualified civil engineer, that provides a description of operation and maintenance procedures for specific stormwater control facilities, for use by operation and maintenance personnel, which are as protective or more protective than those specified in the stormwater manual. Maintenance of manufactured BMPs shall be per the manufacturer’s recommendations.
“Owner”means the owner or owners of the freehold of the premises or lesser estate therein, a mortgagee or vendee in possession, assignee of rents, receiver, executor, trustee, lessee or other person, firm or corporation in control of a piece of land. As used herein, owner also refers to, in the appropriate context: (1) any other person authorized to act as the agent for the owner; (2) any person who submits a stormwater management concept or design plan for approval or requests issuance of a permit, when required, authorizing land development to commence; and (3) any person responsible for complying with an approved stormwater management design plan.
“Person”means any individual, association, organization, partnership, firm, corporation, business or other entity recognized by law and acting as either the owner or as the owner’s agent.
“Premises”means any building, lot, parcel of land, or portion of land whether improved or unimproved.
“Project site”means that portion of a property, properties, or right-of-way subject to land disturbing activities, new impervious surfaces, or replaced impervious surfaces.
“Recharge”means the replenishment of underground water reserves.
“Redevelopment”means, on a site that is already substantially developed (i.e., has thirty-five percent or more of existing hard surface coverage), the creation or addition of hard surfaces; the expansion of a building footprint or addition or replacement of a structure; structural development including construction, installation or expansion of a building or other structure; replacement of hard surface that is not part of a routine maintenance activity; and land disturbing activities.
“Site”means the area defined by the legal boundaries of a parcel or parcels of land that is (are) subject to new development or redevelopment. For road projects, the length of the project site and the right-of-way boundaries define the site.
“Stop work order”means a written notice, signed by the director and posted on the site of construction or other activity, which states that a violation of the Poulsbo Municipal Code has occurred and that all activity, except that of erosion and sediment control, must cease until further notice. The director may cause a stop work order to be issued whenever the director has reason to believe that there is a violation of the terms of this chapter. The effect of such a stop work order shall be to require the immediate cessation of such work or activity until authorization is given by the director to proceed.
“Stormwater”means runoff during and following precipitation and snowmelt events, including surface runoff, drainage, or interflow. It is that portion of precipitation and snowmelt events that does not naturally percolate into the ground or evaporate, but flows via overland flow, interflow, pipes, and/or other features of a stormwater drainage system into a defined surface water body or a constructed infiltration facility.
“Stormwater drainage system”means constructed and natural features which function together as a system to collect, convey, channel, hold, inhibit, retain, detain, infiltrate, divert, treat, or filter stormwater. A system includes, but is not limited to, the city’s municipal separate storm sewer system, roads with drainage systems, municipal streets, gutters, curbs, inlets, piped storm drains, retention and detention basins, ditches, and other drainage structures.
“Stormwater facility”means a constructed component of a stormwater drainage system designed or constructed to perform a particular function or multiple functions, including, but not limited to, pipes, swales, ditches, culverts, street gutters, detention ponds, retention ponds, constructed wetlands, infiltration devices, catch basins, oil/water separators and biofiltration swales. Stormwater facilities shall not include building gutters, downspouts and drains serving one single-family residence.
“Stormwater management”means the use of structural or nonstructural practices that are designed to reduce stormwater runoff pollutant loads, discharge volumes, peak flow discharge rates and detrimental changes in stream temperature that affect water quality and habitat.
“Stormwater manual”means the Stormwater Management Manual for Western Washington prepared by the Washington State Department of Ecology. The version shall be in accordance with the city’s NPDES permit and be adopted by the city for stormwater management pursuant to Chapter
12.02.
“Stormwater site plan”means a comprehensive report containing all of the technical information and analysis necessary to evaluate a proposed new development or redevelopment project for compliance with stormwater requirements for both construction and permanent stormwater management on the site.
“Watercourse”means a depression formed by runoff moving over the surface of the earth; any natural or artificial channel through which water flows; a lake, river, creek, stream, wash, arroyo, channel or other topographic feature on or over which waters flow at least periodically.
“Waters of the state”means lakes, rivers, ponds, streams, inland waters, underground waters, salt waters and all other surface waters and watercourses within the jurisdiction of the state of Washington as defined in Chapter
90.48 RCW.
(Ord. 2010-01 § 1 (part), 2010; Ord. 2016-20 § 2 (Att. A (part)), 2016)