Design Standards—Landscaping and Irrigation | Development Standards
with SDC 21.03.020, including the recommendations from any required sensitive areas study. Trails may be located in other areas if it is demonstrated that a new corridor creates less overall or less incremental impact to sensitive areas and habitat while still achieving overall project goals and objectives. As shown in the adopted City comprehensive plan, parks plan or trails plan, trails and corridors should connect public lands, utility corridors, or rights-of-way or other public infrastructure to maximize transportation and public recreation uses. b. Compatibility with Adjacent Land Uses. Trails should be designed and constructed to encourage users to remain on the trail, to diminish the likelihood of trespass and to promote privacy for adjacent landowners. The applicant shall propose for the department’s review and approval the use of fencing, signage, landscaping or other appropriate means to accomplish this requirement. Any proposed lighting should be directed away from houses along the trail corridor. Safety of trail users and adjacent landowners shall be addressed through review of vehicle access and crossing locations and design. Allowed uses should be consistent with the trail types identified in an adopted city comprehensive plan, parks plan or trails plan, and/or determined through a City-approved, site- specific master planning process if applicable. c. Width. The width of the cleared area, trail corridor, surface and shoulder should be designed consistent with AASHTO standards for public multi-use paved trails (Guide for the Development of Bicycle Facilities, 1999, as amended, American Association of State Highway and Transportation Officials), and with U.S.
Forest Service standards (Trails Management Handbook, 1991, as amended, and Standard Specifications for Construction of Trails Handbook, 1984, as amended) if unpaved. Cleared areas shall be the minimum necessary consistent with the standards and requirements in the SMC. d. Sensitive Areas and Buffers. Trail impacts to sensitive areas should be reviewed consistent with the impact avoidance and mitigation sequencing requirements of SDC 21.03.020. Mitigation of impacts is required, even for trails located on existing corridors consistent with subsection 1. of this section. Wetland and stream buffers shall be expanded to compensate for the total area of the trail corridor, including all disturbed areas located within the buffer area. No expansion shall be required for trails located on existing improved corridors, including but not limited to utility corridors, road or railroad rights-of-way, within wetland or stream buffers. Mitigation shall be required for all impacts consistent with SDC 21.03.020. e. Location. Except for approved viewing platforms, spur trails, wetland or stream crossings proposed consistent with SDC 21.03.020, or trails located on existing corridors consistent with subsection 1. of this section, trails that are proposed in proximity to wetlands or streams or associated buffers may only be located in the outer 25 percent of the wetland or stream buffer and should be generally aligned parallel to the stream or perimeter of the wetland. Spur trails and viewing structures should be designed to minimize impacts on
Effective | January 1, 2022
Title 21: Sammamish Development Code | 315
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