23.60A.908

"DBH" means tree diameter at breast height and is the method to measure the size of a tree. "Development" means a use consisting of the construction or exterior alteration of structures; dredging; drilling; dumping; filling; removal of any sand, gravel or minerals; bulkheading; driving of piling; placing of obstructions; or any project of a permanent or temporary nature that interferes with the normal public use of the surface of the waters overlying lands subject to this Title 23 at any water level. "Development site" means a lot or lots on which a proposed development or use will occur. "Development standards" means regulations pertaining to the physical modification of the environment for development, a shoreline modification, or a use, including the size and location of structures in relation to the lot. "Development, Substantial." See "Substantial development." "Director" means the Director of the Seattle Department of Construction and Inspections. "DNR" means Washington State Department of Natural Resources. "Dock" means an artificial side of a harbor or bank of a river for mooring ships, also described as a shipping or loading platform. "Dredging" means the removal or displacement of sand, silt, gravel, or other submerged materials, from the bottom of water bodies, riparian watercourses, or natural wetlands. Support activities and operations, including but not limited to the collection and transfer of dredged materials, are included in this definition. Dredging does not include removal of riprap and incidental grading when shoreline stabilization is replaced if the water depth does not increase when compared to pre-project conditions. The placement of dredged materials into water bodies, riparian watercourses or natural wetlands is "fill" and regulated under Sections 23.60A.172 and 23.60A.184 . "Dry boat storage" means a "parking and moorage" use, in which space on a lot on dry land, either open or inside a structure, is rented or sold to the public or to members of a yacht, boat or beach club for the purpose of storing boats. "Dry dock" means any method or mechanism by which a vessel can be removed from the water for the purpose of viewing, working on, or painting the underwater portions of the vessel. Dry docks include: "Floating dry dock" means a strong decked barge that is submerged by filling it with water over which a vessel is floated and which is then pumped out to lift the barge deck clear of the water with the vessel sitting high and dry. It includes the wing walls needed to provide enough flotation to prevent sinking all the way to the bottom. "Marine railway dry dock" means a place where a vessel is tied to a carriage which is then pulled out of the water on an inclined railway usually with winches. The rails are spaced far enough apart to provide stability of the carriage with a vessel on it. "Synchrony-lift dry dock" means a stiffened deck or barge like structure that is lifted out of water by lifting mechanisms such as winches or jacks operating synchronously. "Travel-lift" means a motorized device like a lumber carrier that drives over water on two adjacent docks straddling the water to raise a boat in the water between the two docks using straps attached to winches. The travel-lift then drives to an area on land to set the boat on blocks. "Dry land" means land at an elevation above the line of ordinary high water in freshwater or mean higher high water in marine water. "Duwamish" means the area of the Duwamish River from the south city limits north to South Massachusetts Street on the east side and Southwest Florida Street on the west side, and including Harbor Island and the East and West Duwamish Waterways. "Dwelling unit" means a room or rooms, located within a structure or vessel, designed, arranged, occupied, or intended to be occupied as living accommodations independent from any other household. The existence of a food preparation area within the room or rooms shall be evidence of the existence of a dwelling unit. (Ord. 124919 , § 157, 2015; Ord. 124750 , § 63, 2015; Ord. 124105 , § 3, 2013.)