915 N BROADWAY 2024-07-22 - Laserfiche WebLink

Land Disturbing Activity Any activity that results in a change in the existing soil cover(both vegetative and non-vegetative) 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 shallalso 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. New development Land disturbing activities, including Class IV-general forest practices that are conversions from timberland 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. New Impervious Surface A surface that is: ■ changed from a pervious surface to an impervious surface (e.g. resurfacing by upgradingfrom dirt to gravel,asphalt,or concrete),or ■ upgraded from gravel to asphalt or concrete,or ■ upgraded from a bituminous surface treatment("chip seal')to asphalt or concrete. Pervious Surface A surface material that allows stormwaterto infiltrate into the ground.Examples include lawn, landscape, pasture, native vegetation areas, and permeable pavements. Rain Garden A non-engineered shallow landscaped depression, with compost-amended native soils and adapted plants.The depression is designed to pond and temporarily store stormwater runoff from adjacentareas,and to allow stormwaterto pass through the amended soil profile.See BMP T5.14: Rain Gardens. Redevelopment On a site that is already substantially developed (i.e., has 35%or more of existing hard surface coverage),the creation or addition of hard surfaces;the expansion of a build ingfootprintoraddition orreplacementofastructure;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. Replaced Hard Surface For structures,the removal and replacement of hard surfaces down to the foundation.For other hard surfaces,the removal down to bare soil or base course and replacement. Sheet flow Runoff that flows over the ground surface as a thin,even layer,not concentrated in a channel. City of Everett Public Works Small Project StormwaterSite Plan Report September 2022 3