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ORDINANCE Page 14 of 19 <br />4. Herring, sand lance, and smelt spawning areas; <br />5. State natural area preserves and natural resource conservation areas; and <br />6B. Those areas listed in the 1981 SEPA Resource Inventory as significant biological areas, <br />which are: <br />a 1. Maulsby Swamp; <br />b 2. Kasch Park (Bomarc) Bog; <br />c 3. Simpson Lee site Category I wetlands; <br />d 4. Narbeck Swamp; <br />e 5. Jetty Island. <br />“Significant surface water connection” means a surface water flow that is continuous for thirty <br />days or more during years of normal rainfall. <br />“Species, listed” means any species listed under the federal Endangered Species Act or state <br />endangered, threatened, and sensitive, or priority lists (see WAC 220-610-110 or current <br />“Priority Habitat and Species List,” Washington Department of Fish and Wildlife). <br />“Steep slopes” means any ground that rises ten feet or more for every twenty-five feet of <br />horizontal distance, thus having a grade of forty percent or steeper. A slope is delineated by <br />establishing its toe and top: <br />1. “Toe” of a steep slope is the lowermost limit of the area where the ground surface <br />rises ten feet or more vertically within a horizontal distance of twenty-five feet. <br />2. “Top” of a steep slope is a distinct, sharp break in slope which separates slopes <br />inclined at less than forty percent from slopes equal to or greater than forty percent. <br />Where no distinct break in slope exists, the top of the steep slope shall be the <br />uppermost limit of the area where the ground surface drops ten feet or more vertically <br />within a horizontal distance of twenty-five feet. <br />“Stream” means those areas where naturally occurring surface waters flow sufficiently to <br />produce a defined channel or bed which demonstrates evidence of the passage of water <br />including, but not limited to, bedrock channels, gravel beds, sand and silt beds and defined- <br />channel swales. A “defined channel or bed” means a watercourse that is scoured by water or <br />contains deposits of mineral alluvium. The channel or bed need not contain water during the <br />entire year. Streams do not include watercourses which were created entirely by artificial <br />means, such as irrigation ditches, canals, roadside ditches or storm or surface water run-off <br />features, unless the artificially created watercourse contains salmonids or conveys a stream that <br />was naturally occurring prior to the construction of the artificially created watercourse. <br />“Stream channel bottom” means the submerged portion of the stream cross-section which is <br />totally an aquatic environment. The channel bottom may be seasonally dry.