Ordinance 3676-19 - Laserfiche WebLink

"Unavoidable and necessary impacts" means impacts to regulated critical areas after the applicant proposing to alter a regulated critical area has demonstrated that no reasonable alternative exists for the proposed project. "Undevelopable area" means: 1. Regulated wetlands; 2. Geologically hazardous areas which are determined by supporting studies to be unsuitable for development; 3. Streams; 4. Habitats of primary association; 5. Plant associations of infrequent occurrence. "Undisturbed, relatively" is defined in question H2.0 of the 2014 Washington State Wetland Rating System for Western Washington "Unstable soils" means soils which by their physical nature are not suitable to support buildings, roads, utilities or other manmade development related improvements,or which have the potential for slope failure, erosion, or subsidence. Unstable soils include, but are not limited to,those areas defined as landslide hazard areas, erosion hazard areas, and seismic hazard areas, or other soils which have been determined by the public works director or the building official to be unsuitable for building foundations or structural support. "Upper bank" means that portion of the topographic cross-section of a stream which extends from the break in the general slope of the surrounding land to the ordinary high water mark. "Wetlands ', ed" means those areas that are inundated or saturated by surface or ground water at a frequency and duration sufficient to support, and under normal circumstances do support, a prevalence of vegetation adapted for life in saturated soil conditions. Regulated wetlands generally include swamps, marshes, ponds, bogs and similar areas. Regulated wetlands do not include those artificial wetlands intentionally created from nonwetland sites, including, but not limited to, irrigation and drainage ditches,grass-lined swales, canals, detention facilities,wastewater treatment facilities, farm ponds, and landscape amenities, or those wetlands created after July 1, 1990, that were unintentionally created as a result of the construction of a road,street, or highway. Wetlands created as mitigation and wetlands modified for approved land use activities shall be considered as regulated wetlands. For identifying and delineating regulated wetlands, the city shall use the Washington State Wetland Identification and Delineation Manual. "Wetlands," for the purpose of inventory mapping, means lands transitional between terrestrial and aquatic systems where the water table is usually at or near the surface or the land is covered by shallow water.Wetlands must have one or more of the following three attributes: 1. At least periodically, the soil supports predominantly hydrophytes; Planning Commission Resolution 19-- Page 22 Title 19 March 19, 2019