TagSea-Tac Airport(2027)

Draft map (AR 035005, Exhibit 1015) showing restrictive covenant boundaries, sewer line easements, IWS line, Des Moines Creek, and surveyed OHWM on the south end of Seattle-Tacoma International Airport. Identifies the Tyee Valley Golf Course Mitigation Area and Des Moines Creek Mitigation Area, with a note that mitigation was required by the Washington State Department

Exhibit AR034998-AR035000, Attachment E: Summary table of compensatory mitigation (on-site and off-site) for watershed, wetland, and stream impacts at Seattle-Tacoma International Airport related to third runway embankment and South 154th Street relocation. Details on-site permanent impacts including filling approximately 980 linear feet of Miller Creek channel, filling 8,500 cy of Miller Creek floodplain, and filling

Resume of Joseph T. Brascher, Hydrologist at AQUA TERRA Consultants, Olympia, WA. Details expertise in hydrology, surface water modeling, computer programming, and web development. Experience with hydrologic modeling software packages including HSPF, SWMM, GENSCN, HEC-RAS, HYDRA, WATERWORKS, HYDRAIN, HY8, and MODFLOW. Representative assignments include Green Cove Creek Low Impact Development Study (City of Olympia), Tambark

Resume of John J. Strunk, Associate Geologist at Associated Earth Sciences, Inc. (AESI), Bainbridge Island, WA. Over sixteen years of experience in environmental and ground water industry. Projects include Area-Wide Ground Water Study at Seattle-Tacoma International Airport (Sea-Tac Airport) under MTCA Agreed Order between Ecology and Port Of Seattle; Third Runway project support regarding ground

This document is the professional curriculum vitae of Dyanne Sheldon, principal of Sheldon & Associates, Inc., a Seattle-based wetland ecology consulting firm. Among her relevant work, she co-authored both the Sea-Tac Airport Wetland Inventory and the Sea-Tac Airport Wetland Management Plan in 1991 for the Port of Seattle's Environmental Management Section. Her broader expertise spans wetland delineation, habitat restoration, environmental planning, and regulatory compliance across the Pacific Northwest.

This figure from the Sea-Tac Airport Stormwater Management Plan maps current fish habitat in the Des Moines Creek, Miller Creek, and Walker Creek watersheds near Sea-Tac Airport. It identifies the fish species present in various streams and lakes in the area, including Coho, Cutthroat, Steelhead, Chum, Chinook, Bull Trout, and Pumpkinseed Sunfish. The map also highlights piped stream segments and areas of potential Chinook and Bull Trout habitat within these interconnected watershed basins adjacent to Puget Sound.

This document is the curriculum vitae of Dr. Peter Willing, a water resources consultant based in Bellingham, Washington, who was retained to review surface and ground water hydrology related to the possible construction of a third runway at Sea-Tac Airport from November 1999 to February 2001. His investigation addressed issues including stormwater management effectiveness, compliance with the King County Surface Water Design Manual, and potential project effects on wetlands, stream flows, and anadromous fish. Dr. Willing holds a Ph.D. from Cornell University and has broad experience in flood analysis, water rights, and geohydrologic investigations across the Pacific Northwest.

AR 018450 (DOE Misc 0033, Exhibit 191). Handwritten notes from a conference call between Seattle and City of Des Moines discussing what emergency action will override Section 401, Army Corps of Engineers regulation of indirect impacts, buffer activity language, and mitigation design. Dennis Ostencorp referenced as thinking about writing a letter on circular and mitigation

Exhibit AR018442 is a detailed map of wetland and stream impacts in the Miller Creek Basin associated with the Seattle-Tacoma International Airport Third Runway project. The map shows delineated wetlands verified by the Army Corps of Engineers (ACOE), wetlands not verified by ACOE, water features, Third Runway embankment, Runway Safety Areas (RSAs), relocated S 154th

NPDES Permit WA-002465-1 fact sheet for the Seattle-Tacoma International Airport (STIA), issued to the Port Of Seattle. Establishes basis for effluent limitations and requirements for discharge of treated industrial wastewater to Puget Sound (WA-PS-0270) and stormwater to Miller Creek (WA-09-2005), Des Moines Creek (WA-09-2000), and the City of SeaTac storm sewer, tributary to Gillian Creek