Environmentally Critical Areas | Environment & Sustainability
b. No Net Loss. Wetland mitigation actions shall not result in a net loss of wetland area. c. Functions and Values. Mitigation actions shall address and provide equivalent or greater wetland and buffer functions and values compared to wetland and buffer conditions existing prior to the proposed alteration. d. Mitigation Type and Location. Mitigation actions shall be in-kind and conducted within the same sub-basin and on the same site as the alteration except when the following apply: i. There are no reasonable on-site opportunities for mitigation, or on-site opportunities do not have a high likelihood of success due to development pressures, adjacent land uses, or on-site buffers or connectivity are inadequate; ii. Off-site mitigation has a greater likelihood of providing equal or improved wetland functions than the impacted wetland; and iii. Off-site locations have been identified and evaluated in the following order of preference:
d) Within the Sammamish service area for an approved fee-in-lieu or mitigation bank program sites within the WRIA 8 in accordance with SDC 21.03.020Y.4. e. Mitigation Timing. Where feasible, mitigation projects shall be completed prior to activities that will disturb wetlands. In all other cases, mitigation shall be completed immediately following disturbance and prior to use or occupancy of the activity or development. Construction of mitigation projects shall be timed to reduce impacts to existing wildlife and flora.
f. Mitigation Ratios.
i. Wetland Mitigation Ratios. The following ratios shall apply to required wetland mitigation. The first number specifies the acreage of replacement wetlands and the second specifies the acreage of wetlands altered.
a) Within the same drainage sub-basin;
b) Within the City limits;
c) Within the Sammamish service area for an approved fee-in-lieu or mitigation bank program sites within the City limits in accordance with SDC 21.03.020Y.4.;
Effective | January 1, 2022
Title 21: Sammamish Development Code | 101
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