ST Enclosure D

The overview and mitigation component summaries outlined below are from the Port’s Natural Resource Mitigation Plan, Dec. 2000. Mitigation for the project impacts would affect about 18.61 acres of wetland on-site near STIA, and generally convert farmed or emergent (lawns and golf course turf) wetland to shrub wetlands. Mitigation would also establish about 41.80 acres of upland forested or shrub buffers near STIA to protect wetland and stream functions. The off-site mitigation at Auburn will affect 23.39 acres of wetlands. ON-SITE MITIGATION VACCA FARMS AND LORA LAKE MITIGATION Mitigation at the Vacca Farm site focuses on replacing the Miller Creek stream channel, replacing riverine habitat functions, replacing lost floodplain functions, improving water quality functions, improving organic matter export functions, and reducing the habitat value of the area to waterfowl and flocking birds. Compensatory mitigation at the Vacca Farm site includes the following components: • Relocation of 980 feet of a channelized portion of Miller Creek (to accommodate the embankment for the third runway, the RSA’s, and the relocation of South 154th St.). The new stream channel will be approximately 1,080 feet long. • Restoration of natural channel morphology and instream habitat to the relocated reach of Miller Creek. • Restoration and enhancement of riverine buffers along Miller Creek (3.04 acres). • Restoration of floodplain wetlands on the Vacca Farm site (6.60 acres of Prior Converted Cropland); 1.59 acres of enhancement in Wetlands A1, A1a, A2, A3, A4; and 0.73 acre of enhancement in farmed wetlands (1,2,3,9,10,11). • Enhancement of upland…

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PSCAA Advisory Council Meeting Agenda
Add to CalendarMWednesday Mar 11, 9:00am - 11:35am
1904 3rd Avenue, Suite 105, Seattle, WA 98101
Call to order – Roll Call – Quorum Established – Land Acknowledgement We would like to acknowledge that our Agency operates in four present-day counties, which are the traditional lands of the Coast Salish people, past and present. This acknowledgement does not take the place of authentic relationships with indigenous communities in our jurisdiction and [...]