Town Center | Development Standards—Landscaping and Irrigation
21.07.070 Development Standards— Landscaping and Irrigation A. Purpose
4. Providing physical separation between residential and nonresidential areas; 5. Providing visual screens and barriers as a transition between differing land uses as required in SDC 21.07.060A.8.d.; 6. Retaining existing vegetation and significant trees by incorporating them into the site design; 7. Providing increased areas of permeable surfaces to allow for:
The purpose of this chapter is to preserve the aesthetic character of the Town Center planning area, to improve the aesthetic and functional quality of the built environment, to promote retention and protection of existing vegetation; to promote water efficiency, to provide a drainage function to manage hydrology closest to the source, to reduce the impacts of development on drainage systems and natural habitats, to increase privacy for residential zones, and to promote native wildlife. The desired result of landscaping and site design standards is that the Town Center exhibit a predominantly natural landscape character emphasizing mature plants and informal, naturalistic layout. Within this naturalistic backdrop there may be areas of more formal, urban character where the type and intensity of uses or the desire for a more garden-like setting are appropriate. Another goal of the landscape concept is to improve ecological functions, such as surface water retention, temperature reduction, and habitat enhancement. Landscape schemes that enhance the local ecology are preferred. 1. Providing visual relief from large expanses of parking areas and reduction of perceived building scale;
a. Infiltration of surface water into groundwater resources;
b. Reduction in the quantity of stormwater discharge; and
c. Improvement in the quality of stormwater discharge;
8. Require the use of native plant species by their retention or use in the landscape design; 9. Requiring water use efficiency through water budgeting and efficient irrigation design standards; 10. Encouraging the use of a diversity of plant species that promote native wildlife habitat.
11. Applying bioretention design standards.
12. To avoid conflicts between landscaping, tree and vegetation protection, and underground and above ground utilities. Landscaping should be designed to avoid utility conflicts and utility corridors should be located to avoid tree and vegetation removal where feasible.
2. Enhancing built structures and open spaces;
3. Adding visual interest and variety in the Town Center;
508 | Title 21: Sammamish Development Code
Effective | January 1, 2022
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