EXH AR019469: NMFS Biological Opinion — STIA Master Plan Update, ESA Section 7 & Essential Fish Habitat

In May 2001, the National Marine Fisheries Service (NMFS) issued a biological opinion concluding that planned construction and expansion projects at Seattle-Tacoma International Airport — including a new 8,500-foot runway and other facility upgrades — were not likely to adversely affect threatened Puget Sound chinook salmon or their designated critical habitat. The review, requested by the FAA under the Endangered Species Act, examined potential impacts to nearby waterways such as Miller, Des Moines, and Gilliam creeks, as well as Essential Fish Habitat for coastal and groundfish species. NMFS concurred with the airport's own Biological Assessment, determining the projects could proceed with the mitigation measures proposed.

Notes

NMFS No. WSB-00-318. Letter dated May 31, 2001 from NMFS Northwest Region to FAA Manager Lowell H. Johnson concurring with the Biological Assessment’s determination of ‘may affect, not likely to adversely affect’ for threatened Puget Sound chinook salmon (Onchorhynchus tshawytscha) and designated critical habitat under ESA Section 7(a)(2). Covers Master Plan Update Improvements at Seattle-Tacoma International Airport (STIA), including construction of a new 8,500-foot air carrier runway, 600-foot runway extension, runway safety areas, Miller Creek relocation (~980-foot reach), Auburn wetland mitigation near Green River, stormwater management, and Industrial Wastewater System (IWS) discharging to Midway Sewer District in Puget Sound. Also addresses Essential Fish Habitat (EFH) under Magnuson-Stevens Act Section 305(b) for coastal pelagic species and West Coast groundfish — finds ‘not likely to adversely affect.’ Action area includes Miller Creek, Walker Creek, Des Moines Creek, Gilliam Creek, and associated estuaries. FAA, Port of Seattle, Corps of Engineers Section 404 permit, and Clean Water Act nexus discussed. Airport Communities Coalition (ACC) scientific consultants also reviewed documents.

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