23.60A.176

Standards for breakwaters, jetties, groins and weirs

Seattle Municipal Code · Seattle Mun. Code § 23.60A.176

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A. In shoreline environments where breakwaters, jetties, groins and weirs 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.176 . B. The applicant is required to demonstrate that: 1. Any jetty is designed to protect inlet entrances from clogging by excess sediment or to protect a harbor area from storm waves; and 2. If the breakwater, jetty or groin protects a water-dependent use, the benefits to the public provided by that use outweigh any undesirable effects or adverse impacts on the environment or impacts on wave energy, water circulation, or sediment movement adversely affecting other waterfront properties that remain after mitigation sequencing. C. Mitigation Sequencing. In applying mitigation sequencing pursuant to Section 23.60A.158 , the Director shall apply the following additional criteria: 1. Impacts on ecological functions to be addressed include, but are not limited to: construction impacts; modification or obstruction of water circulation and flow; modification of waves and currents; loss of intertidal, sub-tidal, or shallow water habitat; loss or disturbance of food, shelter, spawning, and migration habitat; and loss or disturbance of fish runs, biological communities and biodiversity. 2. The following techniques shall be used in the sequence listed below to mitigate the adverse impacts of breakwaters, jetties, groins and weirs on ecological functions, unless the applicant demonstrates that the priority is inapplicable or not feasible, or that a different sequence or technique will be more effective in reducing adverse impacts: a. Use of floating structures; b. Use of structures on piles; and c. Use of solid fill structures. (Ord. 124105 , § 3, 2013.)

Seattle WA 23.60A.176 | Municipal Law | Corpus