Environmentally Critical Areas | Environment & Sustainability
21.03.020Y.3., shall be prepared for review and approval by the director; and vii. Monitoring. Monitoring of the effect on biologic, hydrologic, and water quality, and assessment of the performance of required mitigation shall be provided by the applicant for five years following the completion of pilot projects authorized by this section. Annual monitoring reports shall be provided to the City for review and approval. Monitoring shall include the collection and analysis of data for the purpose of understanding and documenting changes in natural ecosystems, functions and features including, but not limited to, gathering baseline data. viii. No subsequent exemption from the avoidance sequencing provisions of SDC 21.03.020M.1.a. or SDC 21.03.020Y.1. is authorized for the property participating in this pilot program.
c. The following development standards shall be applied in addition to all applicable requirements of this chapter to development proposals located within a wetland management area district overlay: i. All development proposals on properties zoned R-1 in wetland management areas shall have a maximum impervious surface area of eight percent of the gross acreage of the site. Distribution of the allowable impervious area among the platted lots shall be recorded on the face of the plat. Impervious surface of existing streets need not be counted towards the allowable impervious area. The provisions of SDC 21.03.020.Y.6.c.i shall not apply to the Sammamish Town Center Study Area as identified in Ordinance O2005-185; ii. All subdivisions and short subdivisions on properties identified in a management area for clustering and set aside requirements in the East Lake Sammamish Basin and Nonpoint Action Plan (1994) shall be required to cluster away from wetlands or the axis of corridors along stream tributaries and identified swales connecting wetlands. At least 50 percent of all portions of the property located within wetland management areas identified for vegetation retention shall be left in native vegetation, preferably forest, and placed in a permanent open space tract. The open space tract shall be designed to maximize the amount of separation between any critical areas and the proposed development. If no critical area tracts are required, the open space tract shall be
6. Wetland management area – Special district overlay
a. The purpose of the wetland management area special overlay district is to provide a means to designate certain unique and outstanding wetlands when necessary to protect their functions and values from the impacts created from geographic and hydrologic isolation and impervious surface. b. The wetland management area special overlay district shall be designated on critical areas maps maintained by the department of community development.
Effective | January 1, 2022
Title 21: Sammamish Development Code | 107
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