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Native Vegetation comprised of plant species, other than noxious weeds,that are indigenous to <br /> Vegetation the coastal region of the Pacific Northwest and which reasonably could have been <br /> expected to naturally occur on the site. Examples include trees such as Douglas fir,western <br /> hemlock,western red cedar, alder, big-leaf maple,and vine maple;shrubs such as willow, <br /> elderberry,salmonberry and salal; and herbaceous plants such as sword fern,foam flower, <br /> and fireweed. <br /> New Land disturbing activities, including Class IV-general forest practices that are conversions <br /> Development from timberland to other uses;structural development, including construction or <br /> installation of a building or other structure;creation of hard surfaces;and subdivision, <br /> short subdivision and binding site plans,as defined and applied in Chapter 58.17 RCW. <br /> Projects meeting the definition of redevelopment shall not be considered new development. <br /> New Impervious A surface that is: <br /> Surface 0 changed from a pervious surface to an impervious surface(e.g., resurfacing by <br /> upgrading from dirt to gravel,asphalt, or concrete), or <br /> ■ upgraded from gravel to asphalt or concrete,or <br /> ■ upgraded from a bituminous surface treatment("chip seal")to asphalt or <br /> concrete. <br /> Pervious Surface Asurface material that allows stormwaterto infiltrate intotheground.Examples include lawn, <br /> landscape, pasture, native vegetation areas,and permeable pavements. <br /> Rain Garden A non-engineered shallow landscaped depression,with compost-amended native soils and <br /> adapted plants.The depression is designed to pond and temporarily store stormwater <br /> runoff from adjacent areas, and to allow stormwater to pass through the amended soil <br /> profile.See BMP T5.14: Rain Gardens in the SWMMWW. <br /> Redevelopment On a site that is already substantially developed (i.e., has 35%or more of existing hard <br /> surface coverage),the creation or addition of hard surfaces;the expansion of a building <br /> footprint or addition or replacement of a structure; structural development including <br /> construction, installation or expansion of a building or other structure; replacement of hard <br /> surface that is not part of a routine maintenance activity; and land disturbing activities. <br /> Replaced Hard For structures,the removal and replacement of hard surfaces down to the foundation. For <br /> Surface other hard surfaces,the removal down to bare soil or base course and replacement. <br /> Sheet flow Runoff that flows overthe ground surface as a thin,even layer,not concentrated in a channel. <br /> Stormwater Prepared by Ecology,contains BMPs to prevent,control or treat pollution in stormwater <br /> Management and reduce other stormwater-related impacts to waters of the State.The SWMMWW is <br /> Manual for intended to provide guidance on measures necessary in western Washington to control the <br /> Western quantity and quality of stormwater runoff from new development and redevelopment. <br /> Washington <br /> (SWMMWW) <br /> Waters of the Lakes, rivers, ponds,streams, inland waters, underground waters,salt waters,and all other <br /> State surface waters and watercourses within the jurisdiction of the state of Washington. <br /> City of Everett Public Works <br /> Small Project Stormwater Site Plan/Report—Sept.2023 Page 30 of 40 <br />