Environmentally Critical Areas | Environment & Sustainability
a) A City approved program that utilizes receiving mitigation sites within the same sub-basin as the approved wetland impact. b) The King County mitigation reserves program, or other approved program that gives priority to sites within the same sub-basin. c) A City approved program, the King County mitigation reserves program, or other approved program that gives priority to sites that will expand or improve habitat for Lake Sammamish Kokanee. d) The King County mitigation reserves program, or other approved program that gives priority to sites within the same sub-basin and/or a predefined service area that includes the City of Sammamish.
b. Category III and IV wetlands with a total area of 4,000 square feet or less may have the buffer reduced by 15 feet, provided: i. The wetland does not score four points or less for habitat in the adopted Western Washington rating system; and ii. The buffer functions associated with the area of the reduced buffer width are mitigated through the enhancement of the wetland, the remaining on-site wetland buffer area, and/or other adjoining high value habitat areas as needed to replace lost buffer functions and values; and iii. No subsequent buffer reduction or averaging is authorized. c. Pilot Program. In accordance with SMC 25.01.070, this pilot program is not applicable within the City of Sammamish shoreline jurisdiction. i. Establishment of Pilot Program. A pilot program is hereby established to allow isolated category III and IV wetlands to be exempted from the avoidance sequencing provisions of SDC 21.03.020M.1.a. and the provisions of SDC 21.03.020Y.1., subject to the provisions of this section. ii. Purpose. The purpose of this pilot program is to allow for limited alterations of low habitat value isolated category III and IV wetlands with an area of 4,000 square feet or less, to evaluate the effects of such alterations on hydrologic, habitat, and water quality functions and values.
5. Wetlands – Development flexibilities
The following alterations shall be authorized if the director determines that the cumulative impacts do not unduly counteract the purposes of this chapter and are mitigated pursuant to an approved mitigation plan: a. Isolated wetlands, as defined in SDC 21.04.040B.393., and evaluated in a written and approved critical areas study meeting the requirements of SDC 21.03.020K.3., with a total area of up to 1,000 square feet may be exempted from the avoidance sequencing provisions of SDC 21.03.020M.1.a. This provision is not applicable within the City of Sammamish shoreline jurisdiction.
Effective | January 1, 2022
Title 21: Sammamish Development Code | 105
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