Appendix D: Biological Opinion and Essential Fish Habitat Response for Seattle-Tacoma International Airport Sustainable Airport Master Plan Near-Term Projects

The National Marine Fisheries Service (NMFS) issued a Biological Opinion on July 28, 2025, in response to a Federal Aviation Administration consultation request regarding near-term construction projects outlined in the Seattle-Tacoma International Airport Sustainable Airport Master Plan. The opinion evaluates potential effects of these projects on endangered species and critical fish habitat under the Endangered Species Act and the Magnuson-Stevens Fishery Conservation and Management Act. NMFS reviewed and independently verified analyses from the FAA's Biological Evaluation, incorporating findings related to the proposed action area, species status, and effects on critical habitat.

Notes

NMFS Biological Opinion (WCRO-2025-01881), dated July 28, 2025, issued by the National Marine Fisheries Service West Coast Region to Kandice Krull, Environmental Protection Specialist, U.S. Department of Transportation Federal Aviation Administration, responding to FAA’s June 30, 2025 initiation of ESA Section 7(a)(2) consultation for the Seattle-Tacoma International Airport Sustainable Airport Master Plan Near-Term Projects (NTPs). Also includes Magnuson-Stevens Fishery Conservation and Management Act Essential Fish Habitat (EFH) response. Incorporates by reference sections of the Final Biological Evaluation (BE; Krull 2025) covering Proposed Action, Action Area, Status of Species, Status of Critical Habitat, Environmental Baseline, and Analysis of Effects on Critical Habitat and Species. BE available via samuel.bankston@noaa.gov.

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