23.60A.185

Standards for grading, landfill and slope stabilization

Seattle Municipal Code · Seattle Mun. Code § 23.60A.185

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A. In shoreline environments where grading, landfill or on land slope stabilization are allowed, allowed as special uses or allowed as shoreline conditional uses they shall comply with the standards in Section 23.60A.172 and in this Section 23.60A.185 . B. Grading or landfill that necessitates the installation of a taller bulkhead or additional slope stabilization measures is prohibited unless necessary for the operation of a water-dependent use. C. Grading, landfill and alteration of natural drainage features and landforms is limited to the minimum necessary for development. Surface drainage systems or substantial earth modifications shall be professionally designed to prevent maintenance problems or adverse impacts on shoreline features. D. Landfill shall not be placed in the critical root zone of any trees over 6 inches DBH, and grading, landfill and slope stabilization work shall not result in the compaction of soils in the critical root zone of any trees over 6 inches DBH. E. Spray-on concrete and similar material is prohibited as a slope stabilization method. F. Slope stabilization on a waterfront lot with the intent to stabilize the shoreline is shoreline stabilization and is regulated pursuant to Section 23.60A.188 and not this Section 23.60A.185 . (Ord. 124105 , § 3, 2013.)