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Re: Sustainable Airport Master Plan Near Term Projects NEPA EA and SEPA EIS Scoping Comments The Port of Seattle (the Port) has prepared a Sustainable Airport Master Plan (SAMP) for Seattle- Tacoma International Airport (Airport). It is understood that the purpose of the SAMP is to develop a facilities plan that will allow the Airport to satisfy the region’s air transportation needs through 2034 and identify measures that enable the Port to build, manage, and operate the Airport’s facilities in ways that meet the Port’s sustainability goals and objectives. The airport has experienced substantial growth in aircraft operations, passenger enplanements, and air cargo. Forecasts for the planning period suggest that growth will continue, exceeding the capacity of the current airfield, terminal, and cargo processing facilities. The SAMP process resulted in both a vision for comprehensive long-range Airport development and a Near-Term plan, with projects to be constructed by 2027. The planning constraints included using airport-owned property (not acquiring new land) and not adding to the airport’s current three runways. The SAMP addresses five operational areas: airfield (runways and taxiways), terminal, access and parking, air cargo, and airport/airline support functions. The main goals for each, is to improve efficiency, increase airport capacity, reduce delay, and do this while supporting the Port’s sustainability goals. The environmental analysis to be conducted needs to address the impacts of proposed improvements for each of these operational areas to the surrounding communities. The cities of SeaTac, Burien, Normandy Park, and Des Moines, are the closest communities…

3030 S 204th St, SeaTac, WA 9B1BB North Hill Elementary 1-9835 8th Ave S, Des Moines, WA 98148 Mt Rainier High 22450 L9th Ave S, Des Moines, WA 98198 sta rt date complete date AtP 80% AIP 20% - PtC TotalAlP PFC Revised 11l25l15 Ad Valorum Total POS/FAA funds each school r0,668,L47 8,654,366 4,4L6,429 9,L85,91_4 5,322,t70 4,365,L05 7,440,626 11,359,677 Sunnydale (Closed) L563L 8th Ave S, Burien, WA 98168 2003 2004 $ 4,178,291, 5 1,044,573 2005 2006 $ 3,356,978 $ 839,245 2005 2007 5 2,327,706 5 581,,927 2006 2006 s 5,350,745 5 1",337,686 Ð Cedarhurst Elementary 6L1- S 132nd St, Burien, WA 98L68 Midway Elementary 22447 24th Ave S, Des Moines, WA 98198 Parkside Elementary 2IA4 S 247th St, Des Moines, WA 98L98 B Olympic (Closed) 615 S 200th, Des Moines 98L98 Total spent to date - all fundi cata fles as of 3.L.12 Des Moines Elementary 220OI9th Ave S, Des Moines 98198 1"0 PSSC (Puget Sound skills Center) L8018 Bth Ave S, Des Moines 9B1BB lL Highline high School 25L S 152nd St, Burien 98L68 Pacific Middle School 22705 24th PlS, Des Moines 98198 L3 Beverly Park Elementary 1201S l-04th St, Burien 98168 Southern Heigths elementary II249 14th Ave S, Seattle 98L68 L5 Hilltop Elementary 12250 24th Ave S, Seattle 981-68 2006 2008 5 3,054,346 $ 763,586 2008 2009 s 1",747,834 $ 436,959 2009 5 1,950,145 S 487,536 2013 5 3,879,406 $ gog,gsz 2s,845,45L 5 6,46r,364 est start date 2014 5 3,116,722 $ 779,LBo 20L4 5 781,131" 5 195,433 2015…

AN ACT Relating to increasing environmental justice by improving 1 government decisions; amending RCW 70A.15.2210; adding new sections 2 to chapter 43.21C RCW; and creating a new section.3 BE IT ENACTED BY THE LEGISLATURE OF THE STATE OF WASHINGTON:4 NEW SECTION. Sec. 1. The purpose of this act is to reduce the 5 disparities in cumulative environmental and health impacts in 6 Washington and improve the health of all Washington residents.7 NEW SECTION. Sec. 2. A new section is added to chapter 43.21C 8 RCW to read as follows:9 (1)(a) The department of ecology shall add environmental justice 10 as an element of the environment within WAC 197-11-444 and as a 11 component of the environmental checklist within WAC 197-11-960, as 12 those sections existed on the effective date of this section.13 (b) Upon the adoption of rules by the department of ecology, a 14 lead agency must, in implementing the requirements of this chapter, 15 consider environmental justice in a manner consistent with its 16 consideration of other elements of the environment within WAC 17 197-11-444.18 (2) For purposes of this section "environmental justice" has the 19 same meaning as in RCW 70A.02.010.20 H-0468.2 HOUSE BILL 1303 State of Washington 69th Legislature 2025 Regular Session By Representatives Mena, Berry, Reeves, Reed, Ormsby, Salahuddin, Ramel, Pollet, Nance, Doglio, and Scott Read first time 01/15/25. Referred to Committee on Environment & Energy. p. 1 HB 1303 NEW SECTION. Sec. 3. A new section is added to chapter 43.21C 1 RCW to…

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Ningrui Liu, Rajni Oshan, Magali Blanco, Lianne Sheppard, Edmund Seto, Timothy Larson, Elena Austin OCTOBER 24, 2024 Contents Introduction Methods Results and discussion Conclusions Contents Introduction Methods Results and discussion Conclusions Introduction ◼ Health issues of air pollution • Adverse health outcomes: cardiovascular diseases, respiratory diseases, lung cancer, etc. • Global Burden of Disease 2021: Air pollution is the second leading risk factor, accounting for 8.2% of total DALYs. ◼ Mobile monitoring (MM) studies GBD2021, Lancet, 2024, 403: 2162–2203. Apte et al., Science, 2024, 385: 380–385. • Drive vehicles with high-quality instruments through fixed routes • Have higher spatial resolution than regulatory monitoring RESEARCH GAP OF MM • More focus on PM2.5 than ultrafine particles (UFPs), while health impacts depend on size distribution and chemical composition • Multi-pollutant spatiotemporal data from MM have not been fully used in health studies. Introduction ◼ Source apportionment (SA) studies • Use multi-pollutant data to derive the sources • Approach: positive matrix factorization (PMF), PCA, et al. • Many relied on regulatory monitoring data, and few on MM Hopke et al., Sci. Total Environ., 2020, 740: 140091. Hopke et al., Sci. Total Environ., 2022, 819: 153104. Larson et al., Atmos. Environ., 2017, 152: 201-211. RESEARCH GAP OF SA-MM • Few considered particle size distribution • Few classified traffic-related source into different vehicle types • Limited time frames (days to weeks) ◼ Research aims: PMF + MM 1. Characterize emission sources more accurately 2. Assess source-specific air pollution exposures 3. Estimate the annual average emission…

In Fall 2017, the Port of Seattle (Port) developed the SEA Stakeholder Advisory Round Table (StART) to enhance cooperation between the Port and the Highline Forum-member cities of SeaTac, Burien, Des Moines, Normandy Park, Tukwila and Federal Way (Highline Forum- member cities). This voluntary, non-governing regional roundtable is being convened by the Aviation Managing Director, influenced by discussions with leadership from the Highline Forum- member cities and other representational bodies. Purpose StART provides Highline Forum-member cities, airline representatives, the Federal Aviation Administration (FAA) and the Port with the opportunity to: • Support meaningful and collaborative public dialogue and engagement on airport- related operations, planning and development; • Provide an opportunity for the Highline Forum-member cities to inform the airport- related decision making of the Port of Seattle and other jurisdictions/organizations; • Raise public knowledge about the airport and its impacts, and • Focus on practical solutions to reduce the impact of the airport on Highline Forum- member cities. The intent is to provide a forum that fosters a spirit of good will, respect and openness while encouraging candid discussion between the Port and residential and business community members from the Highline Forum-member cities of SeaTac, Burien, Des Moines, Normandy Park, Tukwila and Federal Way. Membership on StART does not preclude StART members from participating fully in any airport- related environmental review processes at the state or federal level. StART is the preeminent forum for information-sharing, discussing the Highline Forum-member cities’ concerns, and providing feedback to the Port for issues related…

1. Effectively implement the Noise Insulation Repair and Replacement Program 2. Make tangible progress toward identifying additional regional airport capacity in the next three years 3. Sustain existing State programs to enhance air quality 4. Maintain and expand Sustainable Aviation Fuel (SAF) production and use in Washington 5. Decarbonizing ground transportation, reducing transportation emissions, and electrification Statement of Purpose • The growth of operations at Seattle-Tacoma International Airport (SEA) has provided significant benefit to the region, however near-airport communities also face elevated levels of aircraft noise and emissions from transportation. • Meanwhile, the airport will reach its capacity within the coming decades, meaning that the region must identify additional capacity to move people and goods, or else risk increased congestion and a chokepoint on economic growth. • To help address these issues, the Port of Seattle and near-airport communities suggest passage and implementation of the following state-level policy and budget items. • We hope to partner with the State Legislature and State Government to create these new tools, resources, and approaches that can make a tangible difference in our communities. Noise Insulation Repair and Replacement • As necessary, pass legislation amending RCW 53.54 and the Port District Equity Fund / Grant, to ensure that State regulations and programming are complementary to Federal and Port programs and funding. • Ensure that existing State resources are utilized for maximum return on investment. • As appropriate, advocate for additional resources from the State to ensure continual progress with the goal of addressing the…

Release of the FAA NEPA Draft Environmental Assessment and Public Comment Period October-November 2024 Seattle-Tacoma International Airport (SEA) was built in 1949 to handle half a million passengers annually and is now handling more than 50 million passengers. Regional Growth and SEA SAMP Overview The Sustainable Airport Master Plan (SAMP) proposes improvements needed at Seattle-Tacoma International Airport (SEA) to meet future, forecasted demand. • The master plan process was completed in 2018 & identified 31 Near-Term Projects Completed Project Milestones 2018 Port of Seattle completed the Sustainable Airport Master Plan FAA conditionally approved the Airport Layout Plan FAA and the Port initiated NEPA for the NTPs and held Scoping meetings with agencies and the public 2019 Aviation Activity Forecasts were updated 2020 – 2022 Pandemic occurred and process slowed 2022 Baseline conditions and Aviation Activity Forecast updated 2023 Aviation Activity Forecast validated 2024 Completion of analysis; drafting and publication of NEPA document Environmental Review and NEPA What is Environmental Review? • The purpose of an environmental review is to assess the potential environmental impacts of a proposed project before it is undertaken. • An environmental review is a process to assess how projects at Port of Seattle facilities may impact the environment in a variety of categories that include air quality and climate, water resources, biological resources, and noise, among others. What is NEPA? • A federal law requiring federal agencies to assess the environmental effects of their proposed actions prior to making decisions. • The purpose of this Environmental…

For the SEA Stakeholder Advisory Round Table (StART) Meeting October 22, 2024 2 Missed Approach • A missed approach procedure is followed if an approach cannot be continued to an airport. • Missed approach procedures are designed to protect aircraft from other aircraft, terrain, and obstacles on the ground. • Some reasons for executing a missed approach: • The pilot cannot transition to the visual portion of the approach (e.g., fog). • Wind and weather issues. • The approach and/or transition to the landing phase has become unstabilized. • The runway is not clear. • A landing clearance has not been received or is canceled by air traffic control (ATC). • The missed approach is being flown for training (pre-planned and approved by ATC). October 22, 2024 2 October 22, 2024 3 Go-Around • A go-around is a normal operation used when approach or landing parameters deviate from expectations or may be hazardous. • Go-arounds: • Can be initiated by the pilot or ATC when landing conditions are not satisfactory. • Are a routine safety maneuver that may also be used during emergency situations. • Are well practiced and known by pilots as an alternative to landing. • Factors that can lead to a go-around: • ATC initiated action due to overtaking another aircraft, prioritizing the handling of an aircraft in distress, or other issues. • Unexpected hazards on the runway, such as wildlife, debris, other aircraft, or vehicles. • Wind shear. • Wake turbulence from preceding aircraft. • Unstable…