TagSustainable Airport Master Plan(280)
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The SAMP Comment Period Explainer (Intro)
Preparing for the October 21st Comment Period This is the first of a two-part article concerning the SAMP comment period. We’re including a few paragraphs of background because the process has been so lengthy–with many years of delay. The feedback we’ve received thus far has been confusion, partly because the information on the Port’s official -
SAMP-30-DayNotice Factsheet 2024 0920 Page 2
A Port of Seattle informational document outlining the Environmental Study Timeline for the Seattle-Tacoma Airport SAMP NEPA Environmental Assessment, including key dates from Fall 2018 through Late 2025. It announces the 45-day public comment period beginning October 21, 2024, and public meetings on November 13, 14, and 16 in Burien, Des Moines, and SeaTac, directing the public to https://www.sampntpenvironmentalreview.org/. -
SAMP-30-DayNotice Factsheet 2024 0920 Page 1
A Port of Seattle informational flyer describing the Sustainable Airport Master Plan (SAMP) for Seattle-Tacoma International Airport (SEA), outlining 31 Near-Term Projects including a second terminal, elevated busway, and cargo facilities, with a Draft NEPA Environmental Assessment scheduled for release October 21, 2024, and a public comment period ending December 5, 2024. -
2024-09-24Appendix D: Biological Resources — Biological Evaluation and Section 7 Consultation Request, SEA SAMP Near-Term Projects
The FAA submitted a Biological Evaluation to support an informal consultation under the Endangered Species Act for near-term construction projects at Seattle-Tacoma International Airport, all expected to be completed by 2032. The projects aim to expand passenger and cargo capacity, upgrade taxiway layouts, and increase fuel storage including sustainable aviation fuel. The evaluation assessed potential impacts on 14 species, determining that several—including Chinook salmon, bull trout, and killer whales—may be affected but not likely adversely, while the remaining species, such as the marbled murrelet and North American wolverine, would face no effect. -
2024-09-22The Factory: An STNI explainer on the Sustainable Airport Master Plan
This explainer from Sea-Tac Noise.Info describes Seattle-Tacoma International Airport as a large-scale assembly line with three interconnected sections: air (airspace and runways), terminal (gates, passengers, and baggage), and road (cars, trucks, pedestrians, and light rail). The airport processes people, cargo, and vehicles across roughly 450,000 flights per year—more than 1,230 per day—with the goal of moving everything smoothly between sections and no delays. A bottleneck in any one section can ripple through the entire system, making capacity planning central to the airport's Sustainable Airport Master Plan (SAMP). -
2024-09-20
SAMP Update September 20, 2024
After a four year pause, Environmental Review of Near-Term Projects begins October 21 with a 45 day comment period. The end result will be 2025 rulings by the FAA (NEPA) and the State of Washington (SEPA) to determine whether or not a full EIS is required. -
2024-09-20SEA Airport’s Sustainable Airport Master Plan (SAMP) Frequently Asked Questions
The Port of Seattle's Sustainable Airport Master Plan (SAMP) outlines 31 near-term construction projects at Seattle-Tacoma International Airport, including a second terminal with 19 gates, new cargo facilities, and roadway changes, all aimed at serving up to 56 million passengers annually by 2050. A federal environmental review (NEPA) is underway to assess potential impacts, with a 45-day public comment period opening October 21, 2024, allowing community members to submit feedback online, by mail, or at public libraries in Burien, Des Moines, and SeaTac. A separate state-level environmental review (SEPA) will follow once the federal process is complete. -
2024-09-20Sustainable Airport Master Plan: Environmental Review and Airport Master Plan Fact Sheet
Seattle-Tacoma International Airport's Sustainable Airport Master Plan (SAMP), completed in 2018, outlines 31 near-term development projects and is currently undergoing a federal environmental review (NEPA) process, with a draft Environmental Assessment published in October 2024. The review evaluates potential impacts on air quality, water resources, noise, and other environmental factors before any projects move forward. Once the federal NEPA process concludes, a Washington State-level environmental review (SEPA) will follow. -
2024-09-20Press Release: Port Of Seattle Draft Environmental Assessment for SAMP to Be Released Oct. 21
The Port of Seattle announced the release of a draft Environmental Assessment (EA) for Seattle-Tacoma International Airport's Sustainable Airport Master Plan (SAMP) on October 21, 2024, covering 31 near-term development projects including a second terminal, elevated busway, and new cargo facilities. The plan addresses projected regional population growth of one million people by 2035. Members of the public were invited to submit comments on potential environmental impacts during an open comment period running from October 21 to December 5, 2024. -
2024-09-09SAMP NTP Environmental Review: Affected Environment: Existing Traffic Analysis Summary
This report analyzes existing traffic conditions around Seattle-Tacoma International Airport as part of the Sustainable Airport Master Plan (SAMP) Near-Term Projects Environmental Review. It examines 108 intersections—including signalized, stop-controlled, and uncontrolled locations—along key travel routes connecting the airport to surrounding communities, focusing on weekday PM peak hour traffic volumes. The study also includes freeway analysis of SR 518 and I-5 ramps and segments at the request of WSDOT.