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Exhibit B <br />ORDINANCE Exhibit A - Page 62 of 66 <br />5. Increased buffer width is necessary to effectively include the riparian corridor of the stream. <br />C. Standard Stream Buffer Width Application with Enhancement. The planning director may, using the <br />review process as described in EMC Title 15, Local Project Review Procedures, apply the standard <br />stream buffer width when the existing buffer is unvegetated, sparsely vegetated, or vegetated with <br />nonnative invasive species and when buffer enhancement is provided per the following criteria. <br />1. The planning director shall only allow standard buffer width application to streams when <br />the proposal includes a critical area and buffer enhancement plan that improves the functions of <br />the buffer and the critical area in accordance with this chapter. <br />2. Vegetative Buffer Standard. The following vegetative buffer standards shall be met when <br />applying the standard buffer to streams with vegetative enhancement: <br />a. An average 80 percent aerial cover of native vegetation, composed of trees, shrubs, <br />and ground cover with at least 20 percent tree cover and 20 percent shrub cover; and <br />b. No more than 10 percent cover of invasive species. <br />D. Riparian Wetland. Any stream adjoined by a riparian wetland shall have the buffer which applies to <br />the wetland, unless the stream buffer requirement is more protective, in which case the stream buffer <br />requirement shall apply. <br />E. Lake Buffers. Lakes have the following buffers: <br />a. Lakes used by salmonids: one hundred feet; <br />b. Lakes with no salmonid use: one hundred feet. <br />c. Lake buffers shall exclude functionally disconnected areas legally altered as described <br />in EMC 19.37.530(H). <br />If a wetland or stream occurs along the fringe of a lake, the buffer shall be the greater of that required <br />for the lake or for the wetland or stream. <br />F. Buffers for Restored Stream Channels. When a culverted portion of a stream is proposed to be <br />restored to an open channel, the buffer width shall be determined by the director following review of a <br />critical area study. The study must include an analysis of the buffer width necessary to protect water <br />quality and habitat functions of the stream. <br />G. Riparian Corridors. When a development is proposed on a lot with a disturbed riparian corridor, the <br />city shall require that the habitat be enhanced by creating more diversity and eliminating any source of <br />degradation, including, but not limited to: <br />1. Vegetative plantings of native or preferred wildlife food species; <br />2. Construction of nesting islands or installation of nesting boxes; <br />3. Removal of pollutant sources, hard armoring, or fish movement blockages; or