EXH0175018443

--- _(:,ii._ Summary of wetland mitigation credit for Seattle-Tacoma International Airport Master Plan Update improvements. Mitigation Area Mitigation Mitigation (acres) Credit In-Basin Wetland Restoration- Credit ratio 1:1 Vacca Farm (priorconverted croplandand otherupland) 6.60 6.60 Wetland Enhancement- Credit ratio 1:2 Vacca Farm (Farmed Wetland, OtherWetlands, Lora Lake) 5.70 2.85 Wetlands in Miller Creek Wetland and RiparianBuffer 10.25 5.12 Tyee Valley Golf Course 4.50 2.25 Wetland in Des Moines Creek Buffer 1.01 0.51 Subtotal 28.06 17.33 Buffer Enhancement- Credit ratio 1:5 Miller Creek Buffer, South of Vacca Farm 40.86 8.17 Vacca Farm 4.58 0.92 Lora Lake 0.27 0.05 Tyee Valley Golf Course Mitigation Area Buffer 1.57 0.31 West Branch Des Moines Creek Buffer 3.38 0.68 ' Subtotal 50.66 10.13 Preservation - Credit Ratio 1:10 Borrow Area3 Wetland 2.35 0.24 Borrow Area3 Buffer 21.20 2.10 Subtotal 23.55 2.34 Total In-Basin Mitigation Lb 10227 29.80 Out-of-Basin Wetland Creation¢ - Credit ratio 1:1 Forest (17.20 acres), shrub (6.0 acres), emergent (6.20 acres), and open 29.98 29.98 water (0.60 acres) Wetland Enhancement - Credit ratio 1:2 19.50 9.75 Buffer Enhancement - Credit ratio 1:5 15.90 3.18 Total Out-of-Basin Mitigation 65.38 42.91 Total Mitigation 167.65 72.71 a Mitiigatioo credit has not been assiped for relocating a portiom of Miller Crork charnel, instream _t _. _ _1 _nc _s Mo_ Crork buffer enhancement, or a S300.000 In_ fund for watershed t_toratioa. b Mitiplion areas in the Des Moiaes and Miller Crork watersheds exored 102 acges. In- basin mitigation area divided by wetland impact (18.37 acres pemlaaent phts Z05…

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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 [...]