TagSEPA(293)

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.

This slide describes 18 conditions identified in the FAA Record of Decision that must be adhered to, covering five resource categories: Surface Transportation, Historical/Architectural/Archeological and Cultural Resources, Biological Resources, Water Resources, and Hazardous Materials/Pollution Prevention/Solid Waste. A footer note states that mitigation identified in the NEPA EA was carried forward into the Draft SEPA EIS.

This slide summarizes the findings of a Final NEPA Environmental Assessment, categorizing resource areas by impact level ranging from 'Not present' (Farmlands, Wild and Scenic Rivers) to 'Significant impacts requiring mitigation' (Surface Transportation). A footer note states that mitigation identified in the NEPA EA was carried forward into the Draft SEPA EIS, indicating this is part of a joint NEPA/SEPA review process likely related to Sea-Tac Airport or a similar major transportation project.

This Commission agenda memorandum briefing provides an overview of the SEPA Draft Environmental Impact Statement (DEIS) findings for the Sustainable Airport Master Plan (SAMP) Near-Term Projects, to be published May 22, 2026. The DEIS evaluated sixteen environmental resource categories, identifying significant but mitigable impacts to surface transportation. The briefing also outlines a 60-day public comment

A slide titled 'SAMP Near-Term Projects' presents an aerial map of Seattle-Tacoma International Airport identifying planned near-term capital improvements including a Second Terminal, North Gates, Taxiway A/B and D Extensions, Runway Blast Pads, Hardstand areas (Central and North), Busway and Stations, Roadway Improvements, Fuel Farm Expansion, ARFF Relocation, Westside Maintenance Campus, C4S Warehouse Redevelopment, Off-site Cargo, and a Centralized Receiving and Distribution Facility. The slide is labeled page 3 and uses a color-coded legend distinguishing new terminal, maintenance, cargo, support facilities, hardstand pad, existing buildings, new pavement, and demolition areas.

A project timeline slide showing the environmental review process for a Sea-Tac Airport project, currently at the Draft SEPA EIS Publication stage (5/22/26). Key milestones include the Final NEPA FEA & Decision (9/26/25), Draft SEPA EIS Agency & Public Review, Final SEPA EIS & SEPA Decision (Q4 2026), and Commission Action Required for NTP(s) approval in 2027.