Environmentally Critical Areas | Environment & Sustainability
as soon thereafter as possible, and the sewer utility ensures that such vegetation survives; vii. Any additional corridor access for maintenance is provided, to the extent possible, at specific points rather than by a parallel road; and viii. The width of any necessary parallel road providing access for maintenance is as small as possible, but not greater than 15 feet; the road is maintained without the use of herbicides, pesticides or other hazardous substances; and the location of the road is contiguous to the utility corridor on the side away from the wetland. f. Joint use of an approved sewer utility corridor by other utilities may be allowed. g. Where technically feasible, surface water discharge shall be located outside of the wetland and wetland buffer. Where surface water management is authorized within a wetland or wetland buffer it shall be consistent with Appendix I-D: Guidelines for Wetlands when Managing Stormwater Manual for Western Washington, Volume I, August 2012, Publication No. 12-10-030, as such publication may be amended or revised by the Department of Ecology from time to time. h. Public and private trails may be allowed in the outer 25 percent of wetland buffers consistent with the standards and requirements in this chapter, development standards in SDC 21.07.060, and requirements elsewhere in the SMC. Proposals for constructing viewing platforms, associated access trails, and spur
trails must be reviewed by a qualified professional and a critical areas study may be required. i. A dock, pier, moorage, float, or launch facility may be allowed, subject to the provisions of SMC Title 25, if: i. The existing and zoned density around the wetland is three dwelling units per acre or more; ii. At least 75 percent of the lots around the wetland have been built upon and no significant buffer or wetland vegetation remains on these lots; and
iii. Open water is a significant component of the wetland.
j. Crossings. The use of existing crossings, including but not limited to utility corridors, road and railroad rights- of-way within wetlands or buffers for public or private trails is preferred to new crossings, subject to the standards and requirements in the SMC. New wetland road and trail crossings may be allowed if:
i. The director determines that:
a) The crossing is identified as a part of a corridor shown in a City-adopted parks or trails plan, park master plan, transportation plan, or comprehensive plan, or otherwise is necessary to connect or construct the road or trail to publicly owned lands, utility corridors, rights-of- way or other public infrastructure, or is required to provide access to property where no other reasonable alternative access is possible; or
Effective | January 1, 2022
Title 21: Sammamish Development Code | 99
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