16.55.330 Stormwater management implications to wetlands and wetland buffers.
A. Stormwater management facilities shall not be located within wetland buffers, with the following exceptions:
1. Conveyance systems may be located in wetland buffers on a case-by-case basis if deemed necessary and approved by the public works and planning and community development departments.
2. Full dispersion of flow, as defined in Chapter 15.42 BMC, may be allowed in a wetland buffer if approved by the public works and planning and community development departments.
3. The facilities or methods specified in subsections (A)(1) and (2) of this section are allowed only if impacts to the buffer, resulting from their installation, are avoided or mitigated.
B. Stormwater management design and facilities shall be consistent with Chapter 15.42 BMC, as amended, to protect wetland hydrology and wetland functions. Native vegetation enhancement in wetland buffers may be approved for both buffer enhancement and as part of a best management practice to meet low impact development stormwater standards required by the Washington State Department of Ecology. Any stormwater management facility or method associated with wetlands shall meet the state requirements adopted in Chapter 15.42 BMC, as amended. [Ord. 2016-02-005 § 24; Ord. 2010-08-050; Ord. 2008-04-037; Ord. 2005-11-092].