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Mitigation actions shall be conducted within the same sub-drainage basin and on the site as the alteration except when the following apply:

1. There are no reasonable on-site opportunities 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;

2. Off-site mitigation has a greater likelihood of providing equal or improved wetland functions than the impacted wetland; and

3. Off-site locations shall be in the same sub-drainage basin and the same Water Resource Inventory Area (WRIA) unless;

a. The impact is located near the boundary of a WRIA;

b. Established regional or watershed goals for water quality, flood or conveyance, habitat or other wetland functions have been established and strongly justify location of mitigation at another site; or

c. Credits from a city certified wetland mitigation bank are used as mitigation, and the use of credits is consistent with the terms of the banks certification. (Ord. 1215 §14, 2003).