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Exhibit B <br />ORDINANCE Exhibit A - Page 42 of 55 <br />Stream Classification <br />(Type) <br /> <br />Standard Buffer: Intact Native <br />Vegetation <br />Standard Buffer: Unvegetated; Sparsely <br />Vegetated; or Vegetated with Invasive <br />Species <br />Type Np 50 feet 75 feet <br />Type Ns 50 feet 75 feet <br />B. Standard Buffer Width Increase. The city shall require increased buffer widths as necessary to <br />protect streams when the stream is particularly sensitive to disturbance, or the development poses <br />unusual impacts and the increased buffer width is necessary to protect the critical areas described in <br />this subsection. Circumstances which may require buffers beyond minimum requirements include, but <br />are not limited to, the following: <br />1. When the minimum buffer for a stream extends into an area with a slope of greater than <br />twenty-five percent, the buffer shall be the greater of: <br />a. The minimum buffer for that particular stream; or <br />b. Twenty-five feet beyond the point where the slope becomes twenty-five percent or <br />less; <br />2. The stream reach affected by the development proposal serves as critical fish habitat for <br />spawning or rearing as determined by the city using information from resource agencies <br />including, but not limited to, the Washington State Department of Fish and Wildlife, U.S. Fish <br />and Wildlife Service, and recognized tribal nations; <br />3. The stream or adjacent riparian corridor is used by species listed by the federal government <br />or the state as endangered, threatened, rare, sensitive, or monitored, or provides critical or <br />outstanding actual or potential habitat for those species, or has unusual nesting or resting sites <br />such as heron rookeries or raptor nesting or lookout trees; <br />4. The land adjacent to the stream and its associated buffer is classified as a geologically <br />hazardous or unstable area; <br />5. Increased buffer width is necessary to effectively include the riparian corridor of the stream. <br />C. Standard Stream Buffer Width Reduction with Enhancement. The planning director may, using the <br />review process as described in EMC Title 15, Local Project Review Procedures, reduce the standard <br />stream buffer width only when there has previously been substantial legal alteration of the stream <br />and/or buffer on the subject lot or adjoining lots resulting in the existing buffer being unvegetated, <br />sparsely vegetated, or vegetated with nonnative invasive species and when buffer enhancement is <br />provided per the following criteria. Where buffer reduction with enhancement is permitted by this <br />chapter, it shall be limited to portions of buffers that have minimal functions due to prior legal <br />alteration.