TagSEPA(232)

Agenda slide from a Sea-Tac Airport presentation covering Near-Term Projects (NTP), National Environmental Policy Act (NEPA) topics including a Final Environmental Assessment and FAA Finding of No Significant Impact and Record of Decision, State Environmental Policy Act (SEPA) topics including requirements and a Draft SEPA Environmental Impact Statement (EIS), Next Steps, and Outreach and Engagement. This appears to be slide 2 of the presentation.

Title slide for a Port of Seattle presentation on the Sustainable Airport Master Plan Near-Term Projects, covering the State Environmental Policy Act (SEPA) Draft Environmental Impact Statement and Next Steps. The document is identified as Item No. 11b supp, prepared for a meeting dated May 26, 2026.

Slide 7 from a Sea-Tac Airport presentation outlining the lead agencies for environmental review: under NEPA, the FAA serves as lead agency with the Port of Seattle/SEA as sponsor, producing an Environmental Assessment (EA); under SEPA, the Port of Seattle is the lead agency with its Director of Aviation Environment & Sustainability as responsible official, producing an Environmental Impact Statement (EIS).

Slide 6 from a Port of Seattle Seattle-Tacoma International Airport (SEA) Sub-Area Master Plan (SAMP) presentation, explaining that Near-Term Projects are analyzed under regulatory frameworks to mitigate environmental impacts, and listing voluntary Port policies and programs—including emissions reductions, noise management and sound insulation, community capacity building and South King and Port Community Fund grants, workforce development, and sustainability features—that reduce community impacts without requiring a formal environmental evaluation.

Slide 5 from a Seattle-Tacoma International Airport presentation titled 'How Environmental Review Impacts are Analyzed,' showing projected aircraft operations from 2016 to 2037. The chart compares the 2023 Demand Forecast (Unconstrained) against three constrained scenarios: Proposed Action, No Action, and Potential Impacts of SAMP NTPs (Notice to Proceed), with operations ranging from approximately 315,000 in 2016 to a projected 525,000–555,000 by 2037.

A presentation slide titled 'Purpose of Environmental Reviews' explains that environmental reviews assess potential impacts of proposed projects such as SAMP NTPs (Near-Term Projects) before they are undertaken, following federal NEPA and state SEPA requirements. The slide outlines three components: Purpose, Process, and Impacts, including identification of mitigation measures if impacts are found.

A slide titled 'SAMP Near-Term Projects' presents an aerial map of Seattle-Tacoma International Airport annotated with planned near-term capital improvements. Labeled projects include a Second Terminal, North Gates, Busway and Stations, Roadway Improvements, Taxiway A/B and D Extensions, Hardstand areas (Central and North), Fuel Farm Expansion, ARFF Relocation, Runway Blast Pads, Westside Maintenance Campus, C4S Warehouse Redevelopment, Off-site Cargo, Airline Support, Highspeed Exit, and a Centralized Receiving and Distribution Facility.

A presentation slide titled 'Addressing Impacts' distinguishes between Mitigation (triggered when impacts exceed significance thresholds, e.g., surface transportation and level of service improvements) and Minimization Measures (existing SEA programs, regulatory and voluntary, including air quality and emission reduction programs, stormwater BMPs, Sustainable Evaluation Framework, and the Land Stewardship Plan). The 'SEA' abbreviation and subject matter suggest this is from a Seattle-Tacoma International Airport environmental or planning presentation, slide 12.

This presentation slide (page 11) outlines additional analyses conducted under the State Environmental Policy Act (SEPA) to complement a NEPA Environmental Assessment (EA). It lists required analyses including GHGs and Climate, Earth, Transportation, Housing, Plants, Animals, and Cumulative Impacts, as well as voluntary analyses covering Air Quality, Noise, Human Health, and Environmental Justice.

A presentation slide titled 'Surface Transportation Mitigation' describes mitigation measures identified for Category 1 and 2 intersections near Seattle-Tacoma International Airport by 2032, covering 10 Category #1 intersections requiring physical improvements and 16 Category #2 intersections, at an estimated cost of approximately $40 million. The slide includes a map showing study intersections across the Sea-Tac area including Burien, Normandy Park, Sea-Tac, Des Moines, Tukwila, and Renton jurisdictions.