Laserfiche WebLink
Adrs ra. <br />n <br />Ii1Ti1T�5'fOl'SfTY �--�-J <br />,oacobs. <br />upland preservation. All this can be accomplished on property owned by Kittitas County, <br />where wetland, riparian, and floodplain restoration goals can be prioritized. <br />Advance mitigation will generate credit to be used solely by Kittitas County, and the mitigation <br />plan will describe how credit value increases over time as temporal Loss is eliminated and <br />functions, values, and performance standards are met on the site. Depending on timing and <br />approvals, the approach can be scalable to use the site as concurrent mitigation for the <br />programmed CIP projects, or use the advance credits that will be generated as the effort <br />matures and performance standards are met. <br />Mitigation Need <br />Based on current level of design, the ELN planned projects (rehabilitation of existing runway <br />11/29 and full-length parallel taxiway) will impact 2.67 acres of Category ill wetland. As <br />design progresses, the impact to Category III wetlands should also decrease; however, project <br />impacts to wetlands are unavoidable and mitigation will be required. <br />There are several compensatory mitigation scenarios that determine the required mitigation <br />ratios: <br />• Single method compensation where re-establishment or creation(R/C), rehabilitation, <br />preservation, or enhancement are used independently as compensation. This method <br />often requires R/C ratios at greater than 1:1 <br />• Combining multiple types of compensation, where re-establishment or creation are <br />used in combination with rehabilitation, preservation, or enhancement. This allows <br />Lower R/C ratios and provides the opportunity to protect and enhance more areas. <br />A benefit of advance mitigation is that it provides a ledger of available mitigation credits, by <br />method, in advance of project impacts. This provides the permittee and regulatory agencies <br />clear direction in calculating the amount of compensation required for each impact. Both <br />potentia[ mitigation sites described below are large enough to easily provide the 1:1 re- <br />establishment/creation requirement plus several acres of potential rehabilitation, <br />preservation, and enhancement. This will provide excess mitigation for planned and future CIP <br />projects. <br />Mitigation Opportunity <br />Kittitas County has proactively been acquiring properties in the Yakima River floodplain with <br />the intent of long-term protection. These properties were once slated for development, but <br />upon County ownership, the properties are now protected and provide conservation value for <br />the best remaining habitat in the middle Yakima River Basin. Through partnership and funding <br />opportunities with other agencies Like Department of Ecology, the County has prioritized <br />December 8, 2020 <br />