The URL can be used to link to this page

Home My WebLink AboutCSS 2026-02-23 Item 1A - Resolution - Hazard Mitigation PlanCity of Tukwila Thomas McLeod, Mayor Marty Wine, City Administrator AGENDA BILL ITEM NO. 1.A. Agenda Item Adoption of Tukwila Hazard Mitigation Plan Annex Sponsor Mindi Mattson, Emergency Manager Mayor's Office Legislative History February 23, 2026 Community Services & Safety Committee March 2, 2026 Regular Meeting Consent Recommended Motion ❑ Discussion Only ❑x Action Requested MOVE TO Adopt Tukwila Hazard Mitigation Plan Annex EXECUTIVE SUMMARY Tukwila Participates in King County's Hazard Mitigation Program by annexing to the King County Hazard Mitigation Plan. Tukwila's Hazard Mitigation Plan Annex is ready for review and adoption by Council. DISCUSSION The Hazard Mitigation Plan for King County allows each City to provide a city -specific Annex to be included in the County's plan. The plan and annexes outline the strategy for mitigating hazards in the County. This includes identification of hazards, projects, funding, priorities and strategies for the County and each individual city. The Tukwila Hazard Mitigation Plan Annex was developed with input from City staff subject matter experts. Once adopted by Tukwila Council, the Annex will become part of the King County Hazard Mitigation Plan. This maintains the City's ability to maintain eligibility to apply for hazard mitigation grants to further the priorities identified in the Annex. ATTACHMENTS Draft Resolution — Adopting Tukwila Hazard Mitigation Plan 2 A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF TUKWILA, WASHINGTON, ADOPTING THE TUKWILA HAZARD MITIGATION PLAN; AND REPEALING RESOLUTION NOS. 1734 AND 1995. WHEREAS, the City of Tukwila and surrounding areas are subject to various hazards, including flooding, earthquakes, landslides, severe windstorms and other natural and technological/man-made hazards; and WHEREAS, the City of Tukwila is committed to strengthening the City's resilience to the effects of natural and technological/man-made hazards; and WHEREAS, the Federal Disaster Mitigation Act of 2000, specifically Section 322, addresses local mitigation planning and requires local governments to develop Local Hazard Mitigation Plans as a condition of receiving Hazard Mitigation Grant Program funding, Flood Management Assistance, and Pre -Disaster Mitigation funding from the Federal Emergency Management Agency (FEMA); and WHEREAS, FEMA is completing a pre -adoption review of the City's Hazard Mitigation Plan Annex and will approve the Plan upon receiving documentation of its adoption by the City; and WHEREAS, the City Council of the City of Tukwila adopted the Tukwila Hazard Mitigation Plan via Resolution No. 1734 on February 7, 2011 and Resolution 1995 on July 20, 2020; NOW, THEREFORE, THE CITY COUNCIL OF THE CITY OF TUKWILA, WASHINGTON, HEREBY RESOLVES AS FOLLOWS: Section 1. The City Council approves participation in the hazard mitigation planning process, development of a City-wide Hazard Mitigation Plan Annex and adoption of the proposed Hazard Mitigation Plan Annex subject to FEMA approval, hereby incorporated by reference as "Attachment A." Section 2. Repealer. Resolution Nos. 1734 and 1995 are hereby repealed. PASSED BY THE CITY COUNCIL OF THE CITY OF TUKWILA, WASHINGTON, at a Regular Meeting thereof this day of , 2026. [signature to follow] 2026 Legislation: Hazard Mitigation Plan Version: 02/13/2026 Staff. M. Mattson Page 1 of 2 3 ATTEST/AUTHENTICATED: Andy Youn-Barnett, CMC, City Clerk Armen Papyan, Council President APPROVED AS TO FORM BY: Office of the City Attorney Filed with the City Clerk: Passed by the City Council: Resolution Number: Attachment A: Tukwila Hazard Mitigation Plan ("City of Tukwila Plan Annex") 2026 Legislation: Hazard Mitigation Plan Version: 02/13/2026 Staff. M. Mattson Page 2 of 2 4 City of Tukwila Plan Annex Introduction Tukwila Snapshot (Using data from the U.S. Census Bureau, Washington State Office of Financial Management, Puget Sound Regional Council, and other sources): • Tukwila is located in the heart of the Puget Sound region, approximately 12 miles south of downtown Seattle, 17 miles north of Tacoma, and just east of Seattle -Tacoma International airport. • Tukwila is 9.2 square miles in size (2020), with a population of 2,373 persons per square mile. • Tukwila had an estimated population of 22,780 in 2023 and had an estimated employment of around 45,825 in 2022. Between 2018 and 2022, more than 82 percent of those 25 years and older reported being a high school graduate, and 26 percent had a bachelor's degree or higher. • Tukwila is an increasingly diverse city, with more than 69 percent of its population identifying as nonwhite in 2023, and 40 percent born outside of the United States or Puerto Rico. Approximately 47 percent of the residents speak a language other than English at home. • As of 2023, Tukwila had estimated 8,098 households with an average of 2.64 persons per household. • Tukwila's 2023 median household income was $76,331, and the Census Bureau estimates that 13.3 percent of the city's residents live in poverty. • In 2023, 18 percent of the population was under 18 years old, and 11 percent were over 65 years old. • Tukwila has more than 2,000 businesses, which comprise over 40,000 jobs. Businesses cover multiple sectors with concentrations in retail, manufacturing, services, and distribution and specialties in entertainment and aerospace. • Between 2018 and 2022, 72 percent of the population age 16 and up participated in the civilian labor force. Governing Format • Tukwila, incorporated on June 23, 1908, is a non -charter, optional. code city operating under a Mayor -Council form of government, which includes a full-time Mayor, seven -member City Council elected at large, and a City Administrator. AU elected official terms are for a period of four years. Mayor McLeod is the chief executive officer, and the Council is the legislative branch and governing body. City management includes a City Administrator, Deputy City Administrator, nine department heads, 269 full-time employees and 91 part time employees. The current operating budget of the city for 2025 is $ 163,747,027 City of Tukwila Profile Incorporated: 1908 Population: 22,780 Location: 47°28'42"N and 122°16'32W Area: 9.2 Square Miles Government: Mayor/Council Website: www.tukwilawa.gov City of Tukwila Hazard Mitigation Plan Page 1 5 Tukwila Snapshot: (Using data from the U.S. Census Bureau, Washington State Office of Financial Management, Puget Sound Regional Council, and other sources): • Tukwila is located in the heart of the Puget Sound region, approximately 12 miles south of downtown Seattle, 17 miles north of Tacoma, and just east of Seattle -Tacoma International airport. • Tukwila is 9.2 square miles in size (2020), with a population of 2,373 persons per square mile. ■ Tukwila had an estimated population of 22,780 in 2023 and had an estimated employment of around 45,825 in 2022. Between 2018 and 2022, more than 82 percent of those 25 years and older reported being a high school graduate, and 26 percent had a bachelor's degree or higher. • Tukwila is an increasingly diverse city, with more than 69 percent of its population identifying as nonwhite in 2023, and 40 percent born outside of the United States or Puerto Rico. Approximately 47 percent of the residents speak a language other than English at home. • As of 2023, Tukwila had estimated 8,098 households with an average of 2.64 persons per household. ■ Tukwila's 2023 median household income was $76,331, and the Census Bureau estimates that 13.3 percent of the city's residents live in poverty. • In 2023, 18 percent of the population was under 18 years old, and 11 percent were over 65 years old. • Tukwila has more than 2,000 businesses, which comprise over 40,000 jobs. Businesses cover multiple sectors with concentrations in retail, manufacturing, services, and distribution and specialties in entertainment and aerospace. ■ Between 2018 and 2022, 72 percent of the population age 16 and up participated in the civilian labor force. Governing Format • Tukwila, incorporated on June 23, 1908, is a non -charter, optional code city operating under a Mayor -Council form of government, which includes a full-time Mayor, seven -member City Council elected at large, and a City Administrator. All elected official terms are for a period of four years. Mayor McLeod is the chief executive officer, and the Council is the legislative branch and governing body. City management includes a City Administrator, Deputy City Administrator, nine department heads, 269 full-time employees and 91 part time employees. The current operating budget of the city for 2025 is $163,747,027 Development Trends Since 1990, the City of Tukwila has experienced modest but steady population growth (not including annexations). While Tukwila's residential population remains relatively small, the city functions as a major regional employment and activity center, resulting in development patterns that differ from those of primarily residential jurisdictions. Tukwila's nighttime population is approximately 22,780 residents as of 2023 and is expected to grow gradually as additional housing is delivered. In contrast, the city's daytime population remains significantly larger - estimated between 150,000 and 170,000 people on a typical weekday - reflecting the concentration of employment, regional retail, industrial uses, and transportation facilities. This daytime population, roughly seven to eight times greater than the residential population, has important implications for infrastructure demand, emergency response, and hazard mitigation planning. Development activity in Tukwila is generally grouped into five areas: the Tukwila Urban Center/Southcenter area, the Manufacturing/Industrial Center, the Tukwila International. Boulevard corridor, Tukwila South, and the city's 6 City of Tukwila Hazard Mitigation Plan Page 2 remaining residential and commercial neighborhoods. Tukwila Urban Center (TUC)/Southcenter Area — A high -density, regionally oriented mixed -use urban center that includes major retail, employment, entertainment, and an expanding residential base. Development in this area is primarily vertical, with mid -rise and high-rise buildings, and is supported by substantial transportation infrastructure. The concentration of activity and critical facilities as well as the proximity to the Green and Duwamish River makes this area a focal point for emergency preparedness and infrastructure resilience planning. Manufacturing/Industrial Center — A large employment district along the Duwamish River characterized by manufacturing, warehousing, logistics, and industrial uses. This area supports a significant share of the city's employment base and includes critical freight and utility infrastructure. Portions of the area are located near flood - prone or liquefaction -susceptible lands, requiring careful consideration of hazard exposure and continuity of operations. Tukwila International Boulevard (TIB) Corridor — A transitioning corridor anchored by Link light rail service and characterized by mid -rise residential, mixed -use, and commercial development. Ongoing redevelopment is increasing residential density and activity levels, particularly near station areas, while older commercial uses remain interspersed along the corridor. Proximity to major transportation infrastructure and variable site conditions present both redevelopment opportunities and hazard planning considerations. Tukwila South — A large area at the southern end of the city along the Green River identified for long-term redevelopment and intensification. The area includes extensive environmental constraints and infrastructure needs, and development is expected to occur incrementally over time. Past and future site preparation, including grading and floodplain management, play an important role in reducing flood risk and shaping long-term development potential. More broadly, the city continues to see strong market interest in mid -rise residential development, driven by limited land availability and proximity to transit and services. Recently completed or soon -to -be completed projects such as Prose Tukwila in the Tukwila Urban Center and Village at 47th in the Ryan Hill area illustrate this trend. These developments reflect a continued shift toward compact, multi -story housing forms that align with Comprehensive Plan goals to concentrate growth in designated centers and corridors. Recent state -required regulatory changes implementing middle housing provisions under HB 1110 have also begun to influence development patterns. In Tukwila, this shift is reflected in the transition from the former Low Density Residential (LDR) zoning designation to the new Community Residential (CR) zone, which combines elements of the former LDR and Medium Density Residential (MDR) zones. Early development interest indicates growing consideration of duplexes, triplexes, fourplexes, and other middle housing types on lots that were historically developed with single-family homes. Over time, these changes are expected to incrementally increase housing capacity while maintaining neighborhood -scale development patterns. Overall development capacity remains constrained by limited land availability and existing development patterns. As a result, most residential growth is likely to occur through middle housing infill on CR lots and the occasional mixed-use/multi-family project in the TIB and TUC subareas. At the same time, continued development pressure increasingly affects parcels encumbered by critical areas, including steep slopes, wetlands, and streams. While the city regulates development to avoid direct impacts to these areas where feasible, their presence introduces additional environmental risk and development challenges. These constraints require careful site design, mitigation, and long-term monitoring and remain an important consideration from an environmental and hazard mitigation perspective as Tukwila continues to grow. J iction Point of Contact: Name: Pete Mayer Title: EM Director/Deputy City Administrator Entity: City of Tukwila Phone: (206)767-2305 Email: pete.mayer@tukwilawa.gov Plan Prepared By: Name: Mindi Mattson Title: Emergency Manager Entity: City of Tukwila Phone: (206)673-7480 Email: m.mattson@tukwilawa.gov City of Tukwila Hazard Mitigation Plan Page 3 7 City of Tukwila Risk Summary Hazard Risk and Vulnerability Summary HAZARD HAZARD SUMMARY VULNERABILITY SUMMARY IMPACT SUMMARY PROBABILITY OF FUTURE OCCURRENCE INCLUDE EFFECTS OF CLIMATE CHANGE) Avalanche Dam F Earthquake Tukwila is not within an avalanche zone. Flood protection for much of Tukwila that is the valley is provided by the Howard Hanson dam The dam is a USACE project built in 1962 and located approximately;35 miles upriver from Tukwila. The Ding NA This likelihood of a complete dam failure is very low due to diligent, competent management of the project by the US Army Corps of Engineers. However, an event such as a major earthquake or errorist attack could result in dam failure. NA The total release of water stored at the dam would result in extensive flooding: to all downstream communities including Tukwila. Being the furthest community downstream, T would have the most me for response orts including County Flood ; evacuations and Control District hardening of assists with downstream management of flood protection. ;. Like most of the Pacific Northwest, earthquakes are likely the highest impact disaster for Tukwila. We are susceptible to crustal, intraplate, and subduction zone quakes. buildings in the flood plane. However, being further downstream may esult in larger levels of debris and hazardous rnateri" deposits from upstream communities. Tukwila has a significant amount of structures and infrastructure that were built prior to current standards, including concrete tilt -up buildings, unreinforced masonry, and bridges. Bridges are of high concern due to the potential isolation of some or many of our communities, as well An earthquake in or near Tukwila could result in outcomes ranging from inconvenient to catastrophic depending on the severity. A quake could impact much of the critical infrastructure making it difficult to provide essential services. It would greatly overwhelm regional services and NA To date the USACE have been able to accommodate for changing weather patterns resulting in variations to the water storage needs at the project. Predictability of a total darn failure is very low because the most likely causes are either less predictable hazards (earthquakes) and man-made hazards While earthquakes are not predictable, the historic intervals and years since the last major quake in this region could be interpreted as the region being "overdue" for a major occurrence. While the impacts of climate change are anticipated to be significant for our region, there is not currently data correlating earthquake 8 City of Tukwila Hazard Mitigation Plan Page 4 Flood Landslide Severe Tsunami he The city is bisected by the Green and Duwamish River which runs the entire city from north to south. Landslides typically occur when the earth is unstable and the slope is excessive. There is often a triggering event such as excessive rain or earthquake. Tukwila experiences seve weather in the form of wind, rain, snow, ice, and heat. A tsunami is most likely to occur from an earthquake creating wave activity that as the large volume of traffic that passes through Tukwila. There are multiple residential and commercial properties including a professional rugby/soccer complex and a golf course that may be affected by a 100 year event. There is one known area prone to landslide in the city adjacent to Interurban Ave South at the 15200 block. Canyon Estates Condos sit above the potential slide area. The area is marked and slope stabilization and debris mitigation measures have been implemented. Due to demographics, geography and topography, Tukwila. is prone to severe weather events and their outcomes. Any tsunamic activity that reached the city would come through Puget Sound and up through the Duwamish river significantly impact both residents and visitors. With climate change, population and development growth, impacts from flooding will remain impactful. A landslide in the known area could cause life safety issues, traffic issues, and property damage to public and private property. The 2021 Heat Dome was an example of an severe weather event. There have also been significant rain, snow, and ice events causing localized flooding, accidents, damage to property, loss of power and disruption of 911 services. Based on tsunami modeling for Puget Sound, the likelihood of impacts in Tukwila is considered to be low. outcomes and climate change. There is a plan to reinforce the levees throughout the City to lessen flood impacts. Climate change will likely increase rainfall amounts to slide - prone areas. The city recently engaged a Geotech consultant to provide detailed landslide information and mapping. The report will be available Q1 2026 and findings will be incorporated into this annex in the future. Occurrences of severe weather will continue to be impactful to the city. Climate change will likely bring more requent, severe events. See Earthquake information above. While the modeling gives us a good indicator of impacts, prediction of an City of Tukwila Hazard Mitigation Plan Page 5 9 Volcano Wildfire reaches land/ shore. The Cascade, mountain range contains multiple active volcanos that could impact the city. While the city is bordered by mostly urban areas, there are several green belts, power casements, and undeveloped areas that could be prone to fire. Civil ; While civil Disturbance disturbance is rio a common occurrence in_. Tukwila, the ci regularly draws visitors in large numbers to our shopping, commercial, re dining, and recreation offerings. Cyber Attack Cyber Attacks on government occur every day including DDOS and ransom demands. resulting in tidal surge. ahars are not likely to reach the city, debris and ash. flows could be significant depending on wind and other weather conditions. Since the city is largely built out in terms of business and residential structures, there aren't large tracts of forested land. The Department of Homeland Security has a facility in Tukwila that has been the location o repeated protests in 2025. These have been manageable by existing law enforcement and mutual resources. The Mall and surrounding commercial area ar a gathering spot for hundreds of thousands of visitors; especially during the holiday L season. While no agency is 100% immune from cyber attacks, Tukwila is proactive in it's actions to prevent being victimized. A large ash deposit can pose significant health risks for humans and animals. It would cause significant impacts to agriculture,. ransportation and infrastructure including emergency services. Fires in these areas are adequately covered by existing firefighting resources. A large civil disturbance could esult in significant disruption to residents, businesses, emergency services, transportation and communications. A large cyber attack could disable city government and disrupt all city services. earthquake is very imprecise. Predictions of Volcanic activity are imprecise, although often activity will be detected prior to a large eruption. The city would rely on existing geotechnical monitoring and notification of a pending event. While wildfire risk in Tukwila is considered low, fire activity due to climate change is a rapidly changing body of science. Much is being learned about urban interface wildfires in communities with similar building density. Current political conditions have caused an increase in protests/marches in the area which have been mostly peaceful and notrising to the level of civil disturbance. Future occurrences are difficult to pr 1 As cyber criminals become more evolved, city defenses need to keep pace with new and novel attacks. This will be a continual cycle of 0 City of Tukwila Hazard Mitigation Plan Page 6 Hazardous. Materials Incident Public Health Emergency The use and transport of hazardous materials through Tukwila via road and rail allows for the potential of an accidental discharge or spill that could impact the community. Several gas pipelines also run through the city. Tukwila is vulnerable to the effects of a variety of public health emergencies ranging from food/water contamination to rat infestation to pandemic. Tukwila is home to.. transportation infrastructure that regularly carries hazardous materials (primarily rail and major highways). The City also has businesses within the city that use and store hazardous rx aterials. Tukwila doesn't have large health care providers in the city. However, we do experience large public gatherings for shopping, recreating, and sporting and community events. Tukwila's proxi. SeaTac Intl: port and location in the greater Seattle/Tacoma metropolitan area make it vulnerable to a variety of terrorism threats, both large and small in scale. Much of Tukwila lies in the floodplam below the Howard Hanson Dam. Depending on the size, location, and; material spilled/released, a hazmat incident in Tukwila could significantly disrupt government, commerce, and public safety. The primary impacts from a public health emergency would be to government, our residents, businesses, and economy (as evidenced by COVID). Depending on the type of attack, the ci anticipates impacts to government, public safety, physical security, and the environment. finding vulnerabilities and blocking them. The City relies on the transporters and users of hazardous materials to comply with all safety standards, as well as the Puget Sound Regional Fire Authority to maintain response capability. The city is also reliant on users, transporters, and spillers to work with us to mitigate, respond to, and ecover from a hazmat incident. Leadership for management of a public health emergency rests with Seattle King County Public Health. The city looks to them for forecasting, prevention, mitigation, response, and recovery guidance. Tukwila PD meets all andards for orism interdiction for a LE organization of it's size. The city is reliant on the Washington State Fusion Center, as we as other state and federal partners, to provide information regarding terrorism threats and support in responding. City of Tukwila Hazard Mitigation Plan Page 7 ,� ,� Hazard and Asset Overview Map(s) Hazard Areas: Tukwila CountyKing 1 2 City of Tukwila Hazard Mitigation Plan Page 8 City of Tukwila FEMA 100-year Floodplain (2020) S Not to Scale • Tuk✓` a Facility _ FEMA 100 year Faodrlain (2020) Waterbody ( ( City Urn its Vicinity Map Disclaim - The IoratIon n` Fealu€cs and trde I to cs c appceo lye and are olended 0s only. Data Is basedan best i�fu�rnetlan avatlable. City of Tukwila Hazard Mitigation Plan Page 9 13 puzEH Eipwinj, Jo AID V14,6 *04-ett IOC ,,4x0.0,00t04,,40,,4,4%****NOttatoa4„ Logseid • PAY., MIP. • OYv*ii$141lomoi 16)0)4'1 Slalionwv Sere 01,3Q ro. Flood WiILargo SERma¢ „WM Se9a* aorkr, IJi.„:1 Pt mito,4 trme. Ride* Le =Ea Chnaftose Poad RoA41 .674;760—C1,5 01** erg-A-4o15:070 2: 1hif map, sl.,mrs "(/ Ic1ey ny,,,,,K7 /I:48 nvs tiz,p0.01 42y flit' (Iff) c71,91.1 ;reCil U i Rcicr zikylf.,,,,,,,f4iiin(A* 11,,,,,A,4R4S„q City of Tukwila Bridges Not iO 5nmi City of Tukwila Hazard Mitigation Plan Page 11 15 Plan Update Process Updating the Tukwila Annex to the King County Hazard Mitigation Plan took place over the course of about one year. Representatives from Tukwila Emergency Management participated in kick-off and workshop events provided by King County, promoting the county -wide survey conducted, participating in office hours and individual technical assistance provided by the KCOEM Hazard Mitigation staff. In partnership with Puget Sound Regional Fire Authority (Fire/EMS provider for Tukwila), the city conducted an additional survey to gather feedback more specific to the PSFRA-served cities of Covington, Kent, Maple Valley, Seatac, and Tukwila. The results of both the county's survey and the PSRFA survey are incorporated into this Annex. An internal staff team was identified with the necessary subject matter expertise to oversee the process and update of the Tukwila Annex. The work began with a comprehensive review of the 2020 Tukwila Annex, as well as the recently adopted King County Hazard Mitigation Plan (2024). Due to staff turnover and governance changes, few of the staff who worked on the 2020 Annex were available to provide history or context for the previous planning efforts. The current Tukwila planning team aimed to understand the intent and provide continuity for the work done in 2020, while setting forth a fresh vision for hazard mitigation in Tukwila moving forward. The work plan was established through a series of meetings with Emergency Management, based on mitigation area and subject matter expertise. Prioritization was done in consultation with department directors and senior city leadership. Other city-wide planning efforts (including the recently completed Comprehensive Plan, Comprehensive Emergency Management Plan, Continuity of Operations Plan, and the Capital Improvement Plan Dashboard) were leveraged to inform this Annex. As outlined in other sections of this Annex, Tukwila is unique in terms of risk profile, hazards, geography, tax base, budget, development trends, socio-economic factors, and demographics. These factors influenced the final contents of this Annex and the prioritization of the projects identified. City of Tukwila Planning Team NAME TITLE ORGANIZATION CONTRIBUTION Mindi Mattson Mawr Baker Roman Linsao Scott Kirby Will Lugo Sherry Edquid Emergency Manager Development Supervisor GIS Coordinator Admin Support Coordinator Emergency Management Administrator Levee Project Manager/Flood Plain Manager Tony Deputy Finance Cullerton Director Nancy Long Range Eklund i Planning Manager Adam Cox Transportation Project Manager 16 City of Tukwila Hazard Mitigation Plan City of Tukwila Emergency Management Dept, of Communi Development Technology and Innovation Services Communications/Mayor' Office Puget Sound Regional. Fire Authority Public Works Engineering Finance Depar ent Dept of Communi Development Public Works Engineering Planning Coordination Development Trends Hazard Maps ! Photographs/Logo Fire/EMS/EM Subject Matter Expertise vee/Flood Risk/Landslide nformanon Budget Information Demographics/Comprehensive Planning Expertise Bridges/CIP Expertise Page 12 2023, 2024, 2025 2025 2025 Department .atin Director Mindy Roberts Shawn Christie Fiscal Coordinator Finance Department nternal Operations Public Works Facilities anager Plan Update Timeline Oversight of P'Staff Contribu and Project Prioritization Personnel Information City -owned Facilities Expertise PLANNING ACTIVITY DATE SUMMARY Al 'ENDEES King County Kick-off Event, Workshop, Zone 3 Presentation Meetings with internal and external subject matter experts Submission to King County for evaluation of Annex Adoption By Tukwila Council Public Outreach Events carter 2026 Participated in these events as described in the base plan. Identified participants and solicited input for plan update. Submit Tukwila Annex to KCOEM for review and comment Present Tukwila Annex to City Council for formal adoption Mindi Mattson See "Planning Team" listedabove. KCOEM Hazard Mitigation Planning Staff Tukwila City Coun EVENT DATE SUMMARY Ai (ENDERS Survey Conducted by King County PSRFA Served Citie Public Survey City of Tukwila Targeted Survey 2024 Augus { 2024 Trough October July/August 2024 As described in King County HM Base Plan Cities of Covington, Kent, Maple Valley, Seatac and Tukwila promulgated a survey through social nedia to solicit public input on local/regional hazards Hazard survey mailed to every Tukwila address as part of our Hazelnut Newsletter. King County Residents Residents of the PSRFA Served Cities All Tukwila addresses City of Tukwila Hazard Mitigation Plan Page 13 ,� 7 The city was also involved in the regional Lower Green River Corridor Flood Hazard Management Plan and the Partner Planning Committee led by the King County Flood Control District. This plan is a long-term vision for reducing risks and protecting this vital region. This plan in the future will further outline the capital investment strategy along with project implementation for the region. 1 8 City of Tukwila Hazard Mitigation Plan Page 14 Tukwila Hazard Mitigation Program Hazard mitigation is an important part of a comprehensive Emergency Management planning strategy in the City of Tukwila. These efforts require the participation of subject matter experts from multiple departments in the city to properly identify local hazards and develop strategies to mitigate them. These strategies were identified prioritized using the process described in the King County base plan. The city recently adopted the 2025 Comprehensive Emergency Management Plan, which is the over -arching strategic plan for all facets of emergency management, including Prevention, Protection, Mitigation, Response and Recovery. This Hazard Mitigation Plan Annex addresses with more specificity the mitigation components of Tukwila's full -cycle planning efforts. Plan Monitoring, Implementation, and Future Updates King County leads the mitigation plan monitoring and update process and schedules the annual plan check -ins and bi-annual mitigation strategy updates. Updates on mitigation projects are solicited by the county for inclusion in the countywide annual report. As part of participating in the 2025 update to the Regional Hazard Mitigation Plan, Tukwila agrees to convene their internal planning team at least annually to review their progress on hazard mitigation strategies and to update the plan based on new data, recent disasters, changes in legislative requirement, and potential funding sources. As part of leading a countywide planning effort, King County Emergency Management will send to planning partner any federal notices of funding opportunity for the Hazard Mitigation Assistance Grant Program or any other funding opportunities that may be introduced in the future. Proposals from partners will be assessed according the prioritization process identified in this plan and the county will, where possible, support those partners submitting grant proposals. While the city does take mitigation into account in establishing funding priorities, pursuing available grant funds will be a key strategy to fund implementation of this plan. The Hazard Mitigation Plan is scheduled to be updated every five years, with the next update anticipated in 2030. The City of Tukwila will submit letters of intent to participate in the 2030 planning process convened by King County. Continued Public Participation Public participation is a foundational strategy shared by King County and its partner cities. The information developed through this Hazard Mitigation planning effort will be incorporated into outreach and public education strategies. Any capital improvement projects that are developed from this plan will include appropriate communication with residents about proposed projects, ensuring our public understands and has input into the hazards, mitigation efforts, funding, and community impacts. This will include information about local hazard mitigation efforts, as well as how local projects integrate with County, State and Federal mitigation strategies. The outreach and mitigation teams will also continue to work with media and other agency partners to publicize mitigation success stories and help explain how vulnerabilities are being addressed. When possible, the public will City of Tukwila Hazard Mitigation Plan Page 15 Plan Goals The goal of the 2025 King County Regional Hazard Mitigation Plan: Create a framework that reduces the impact and susceptibility of the identified hazards on people, property, and the environment, prioritizing historically underserved communities. This framework takes into account King County's 15 Determinants of Equity and Social Justice: 1lttpws cqpity-in.dicators- kino-county.hub. rcgis.com/ These population -level indicators help to better understand disparities and opportunities to make a difference across the communities we serve. 19 be given access to mitigation projects to allow community members to see the strategies in this plan brought to fruition. Hazard Mitigation Authorities, Responsibilities, and Capabilities The Hazard Mitigation Plan is one of a suite of Tukwila plans that address the over -arching needs of the city. While the following list of plans represents "stand alone" documents, they have each been developed to function in support and coordination of a comprehensive planning strategy. Plans PLAN TITLE RESPONSIBLE AGENCY POINT OF CONTACT RELATIONSHIP TO HAZARD ITIGATION PLAN Comprehensive Plan Comprehensive Emergency Management Plan Capital Improvement Plan Continuity of Operations Plan Surface Water, Water, Sewer, Transportation Department of Community Development Emergency Management, Mayor's Office_ Public Works Department Emergency Management, 1=,Mayor's Office Public Works Nora Gierloff, Director Pete Mayer, Director en Tetatzin, Director Pete Mayer,. 1 Director Jen Tetatzin, Director Programs, Policies, and Processes The Comprehensive Plan is the "blueprint" that explains the community's values and priorities to guide growth and development. The Plan reflects community involvement, technicalanalysis, state and regional requirements, and the judgment of decision -makers. Hazard mitigation is addressed as part of the Prevention, Protection, Mitigation, Respi rise, and Recovery scope` of the C1 MP. The Capital Improvement Program (CIP) is a comprehensive multi -year plan of proposed capital projects. The plan provides an ongoing framework for identifying capital needs, scheduling projects over a period of time, coordinating related projects, and identifying future fiscal impacts. The city recently created a dashboard traching all CIP projects that is available to the public: ht:tps:// sportal.tukwilawa.gov/portal/apps/dash boards/ab03a186bf5b4c799fea7d395c1777cb Availability, suitability of city facilities and city departments' ability to function after a disaster/disruption area identified in the COOP. Plans for surface water, water, sewer, and transportation. PROGRAM/POLICY SPONSIBLE AGENCY POINT OF CONTACT RELATIONSHIP TO HAZARD MITIGATION PLAN Building Code/Code Enforcement Department of Community Development Nick Wagood, Building Official Local and international building codes determine the design and construction standards for all projects. 20 City of Tukwila Hazard Mitigation Plan Page 16 Emergency Emergency Management, Pete Mayer, Director Management Program Mayor's Office Critical Areas Department of Nora Gierloff, Director Ordinance Community Development Public Works Public Works I Jen Tetatzin Director Operations Departments Entities Responsible for Hazard Mitigation Creates plans and policies for the administration of all phases of emergency nianagernent. Provides regulations for wetlands, waterways, and steep slopes. Engineering, maintenance and operation of all city infrastructure. AGENCY/ORGANIZATION POINT OF CONTACT RESP NSIBILITY(S) Public Works Community Developtrient Office of the Mayor Emergency Management Puget Sound Regional Fire Authority en Tetatzin Nora Gierloff Marty Wine Pete Mayer Will Lugo Director of Public Works Director of Community Development City Administrator Emergency Management Director Senior Emergency Manager National Flood Insurance Program National Flood Insurance Program Compliance What department is responsible for floodplain management in your community? Public Works Who is your community's floodplain administrator? Sherry Edquid, Levee Project Manager, Certified (title/position) Flood Plain Manager What is the date of adoption of your flood damage 2004 prevention ordinance? When was the most recent Community Assistance May 2022 Visit or Community Assistance Contact? Does your community have any outstanding NFIP No compliance violations that need to be addressed? If so, please state what they are? Do your flood hazard maps adequately address the No known flooding has happened outside of the flood risk within your community? If so, please state identified Special Flood Hazards why. Does your floodplain management staff need any No assistance or training to support its floodplain management program? If so, what type of training/assistance is needed? Does your community participate in the Community No Rating System (CRS)? If so, what is your CRS Classification and are you seeing to improve your City of Tukwila Hazard Mitigation Plan Page r 21 ating? If not joining CRS? How many Severe Repetitive Loss (SRL) and Repetitive Loss (RL) properties are located in your jurisdiction? Has your community ever conducted an elevation or No buy out of a flood -prone property? If so, what fund No source did you use? If not, are you interested in pursuing buyouts of flood prone properties? s your cor. unity interes din. SRL: no RL: no Hazard Mitigation Strategies Below are summaries of the strategies from the 2020 Annex, as well as the proposed strategies for 2025 moving forward. These are intended to reduce vulnerabilities to hazards identified for Tukwila. The priorities for these strategies is to reduce the effect of local hazards on all existing and future built environment and infrastructure. These projects have been vetted internally be appropriate subject matter experts. 2020 Hazard Mitigation Strategy Status STRATEGY DESCRIPTION Bridge Boeing Access/Airport Maintenance/Improvement Boeing Access/I5 ee Improvements Segale-Gunter } Gaco-Western Ratolo Christensen Road, Survey and replace/retrofit all fire stations Seismic Upgrades to Fire Stations 2025 Hazard Mitigation Strategies Ongoing Completed. Control of Fire Stations transferred to PSRFA per governance change 2023 STRATEGY FAD AGENCY/POC TIMELINE PRIORITY Operational Readiness Facilities Improvement Bridge Improvements Emergency Management, Mindi Mattson Tukwila Public Works/Jen Tetatzin, Director (Shawn Christie) Tukwila Public Works/Jen Tetatzin, Director (Adam Cox) Tukwila Public Works/Jen Tetatzin, Director (Sherry Edquid) Continual and as funding High comes available As funding comes available and partner agencies are willing As funding come available and partner agencies are willing High 22 City of Tukwila Hazard Mitigation Plan Page 18 Operational Readiness Lead Points of Contact Mindi Mattson, Emergency Manager Partner Points of Contact All City Departments King County Office of Emergency Management Zone 3 jurisdictions Puget Sound Regional Fire Authority Special purpose districts Profit and non-profit partners WA State Emergency Management Division FEMA Region X Hazards Mitigated / Goals Addressed Tukwila staff prepared for disasters. Earthquake Dam Failure Flood Landslide Severe Weather Tsunami Volcano Wildfire Civil Disturbance Cyber Attack Haz Mat Incident Public Health Emergency Terrorism Funding Sources and Estimated Costs • Estimated Total Cost: $500,000 Local budget, EMPG and other grant opportunities. Strategy Vision/Objective Sustain and build the City of Tukwila's capability to mitigate, prepare for, respond to, and recover during disasters. Objective: Provide training and exercise opportunities to City staff Develop and enhance City resources for incident management Mitigation Strategies Emergency Operations Center (EOC) Maintain technology and infrastructure of "warm" EOC site at Tukwila Justic Center and alternative EOC Plan and deliver EOC position training and exercise and / or activate the EOC annually Maintain, update, and develop emergency management documents to support City efforts before, during, and after disasters Technology sustainment and development of tools, applications, and resources Harden current systems to protect against cyber intrusion 2-Year Objectives Establish an informed workforce capable of responding to and recovering from disasters 5-Year Objectives Develop a culture of emergency preparedness and ability to act within the City workforce Long -Term Objectives A City able to respond to and recover from a catastrophic disaster City of Tukwila Hazard Mitigation Plan Page 19 23 Implementation Plan/Actions EOC: Offer EOC training and exercise opportunities annually Activate the EOC for major planned events and identified incidents with a proactive stance Engage City staff in local and national preparedness campaigns and activities Identify and implement technology solutions related to incident management Perform routine updates and technology checks Performance Measures Tukwila's workforce will understand their roles before during and after a disaster and will have completed the necessary training and exercise to demonstrate competence. Facility Improvements Lead Partner Points of Contact Hazards Funding Sources and Estimated Points of • King County Office of Mitigated / Goals Costs Contact Emergency Management Addressed • Estimated Total Cost: $1,750,000 • Jen (OEM) — Regional Upgrade Tukwila (equipment, design, permitting, Tetatzin Coordination • Washington Community Center installation, commissioning, (Public State Emergency HVAC/Generator training) • Potential Funding Works Management Division Operations Sources: FEMA BRIC /HMGP, Director) • (EMD) — Grants & • Power loss and WA EMD passthrough grants, Shawn Compliance • Public Health service interruption King County OEM support, Christie Seattle & King County — due to severe Department of Commerce Energy (PW Shelter/ POD coordination weather, Efficiency Grants, City Capital Internal • Seattle City Light (SCL) — earthquakes Improvement Program (CIP), Operations Utility coordination and • Continuity of Local City funds Manager) interconnection • American Red Cross — Shelter operations support • Tukwila Parks & Recreation — Facility operations (TCC) Operations for life safety services (heating/cooling shelter, POD, public health • Tukwila Technology and Innovation Services (TIS) — Network/Communication continuity POD/medical needs shelter, animal shelter, Law Enforcement operations muster point) • Resilience and equity: reliable access to heat/cooling, refrigeration, communications, and charging for community members most impacted 24 City of Tukwila Hazard Mitigation Plan Page 20 Strategy Vision/Objective The City of Tukwila Community Center is a major hub for community activities, as well as the facility designated as a potential emergency shelter, community point of distribution, public health shelter, animal shelter, and recovery center. A permanently installed generator will ensure uninterrupted power to critical building systems during all phases of an emergency. Mitigation Strategy Design, procure, and install a permanent standby generator with automatic transfer switch (ATS) sized to support critical loads: HVAC for occupied shelter areas, refrigeration (medications/food), kitchen equipment, lighting for safe egress, IT/network, radio/charging stations, and life safety systems. Include fuel storage (or natural gas interconnect), sound attenuation, emissions compliance, and secure enclosure; update electrical panels; and integrate with facility emergency operations plans. 2-Year Objectives • Complete load analysis and generator sizing for critical circuits • Finalize site selection, permitting, and environmental review • Prepare grant applications (i.e. BRIC, HMGP, King County) and secure matching funds • Issue RFP and award design -build or design -bid - build contract 5-Year Objectives • Complete installation, commissioning, and staff training • Prepare and adopt Operations and Maintenance Plan (O&M plan) • Implement a preventive maintenance schedule and vendor support • Conduct annual shelter activation exercise using generator power Long -Term Objectives: • Maintain ? 95% generator readiness (tested monthly/annually) • Establish multi -year fuel supply contracts and parts inventories • Explore renewable integration (solar + storage microgrid) to reduce fuel use and operating cost Implementation Plan/Actions • Phase 1 (0-12 months): Load study, design criteria, funding strategy, grant submissions, permitting • Phase 2 (12-24 months): Procurement, site prep, electrical upgrades, ATS install • Phase 3 (24-36 months): Generator install, commissioning, O&M plan, staff training, exercise • Partners: Public Works (lead), Parks & Rec/Facilities (site operations), TIS (network loads), SCL (utility), OEM/EMD (grant/admin), Red Cross (shelter), Public Health (clinical operations) Performance Measures • Coverage of critical loads: Percent (%) of prioritized circuits powered during outage (target ?90%) • Activation time: ATS transfer and shelter spin -up within < 5 minutes • Exercise outcomes: Corrective actions closed within 90 days • Community impact: Number (#) of residents served during activation; satisfaction/after-action feedback City of Tukwila Hazard Mitigation Plan Page 21 25 Facility Relocation Lead Points of Contact Jen Tetatzin (Public Works Director) / Shawn Christie (Internal Operations Manager) • Public Works Partner Points of Contact The Minkler facility houses Public Works emergency response vehicles and supplies to maintain city infrastructure. Anyone who works, lives, or travels in Tukwila benefits from reliable, coordinated response capacity, and mutual aid partners benefit from a nonfloodprone staging location. Hazards Mitigated / Goals Addressed Relocate Minkler Shops to a location with 500-year flood protection. • River flooding/dam failure exposure to critical fleet/equipment and supplies • Continuity of Operations: preserve response capability during flood events • Asset protection: reduce damage, downtime, and replacement costs Funding Sources and Estimated Costs Estimated Total Cost: $30,000,000 (planning, design, permitting, construction, maintenance) • Potential Funding Sources: FEMA BRIC / HMGP, WA EMD pass -through grants, King County OEM support, City Capital Improvement Program (CIP), local match/REST Strategy Vision/Objective Relocate Minkler Shops to higher ground outside the Green River floodplain and construct a resilient Public Works operations center with seismic design, backup power, secure storage, and all -hazards communications, ensuring uninterrupted citywide infrastructure response. Mitigation Strategy Design and build a facility that is outside the floodplain with hardened utilities; include permanent generator/ATS, fuel storage, and comms; plan phased move of equipment and inventory; decommission the Minkler site. 2-Year Objectives • Finalize SEPA/NEPA/environmental review and permitting path • Finalize concept design and cost estimate • Submit grant applications and identify local match; begin property due diligence 5-Year Objectives • Demolish old T-force Buildings, complete design development, and obtain permits • Begin construction and phased transition of fleet/equipment Long -Term Objectives • Commission new facility; achieve full operational readiness • Decommission/repurpose old site, update flood response plans and staging • Maintain preventive maintenance and resilience upgrades over lifecycle 26 City of Tukwila Hazard Mitigation Plan Page 22 Implementation Plan/Actions • Phase 1 (0-12 months): Design, environmental scoping, funding strategy • Phase 2 (12-36 months): Site demolition, design, permits, early works • Phase 3 (36-60 months): Construction, phased relocation, commissioning • Partners: Public Works (lead), Finance/Procurement (funding/contracting), King County, WA Ecology/FEMA/EMD (compliance/grants), Facilities/Real Estate, Engineering (design) Performance Measures • Flood exposure reduction: % decrease in assets located in 100-year floodplain (target:100% removal) • Operational continuity: Response KPIs during flood events (downtime hours, missed routes) • Project delivery: Major milestones met on time/on budget; grant compliance with no findings Bridge Improvements Lead Points of Contact Adam Cox Partner Points of Contact Tukwila Public Works Maintenance and Operations and Puget Sound Fire Authority Hazards Mitigated / Goals Addressed Prioritise preventative maintenance/hardening to bridge elements. Monitor and maintain bridge conditions and make improvements as required. Earthquake Dam Failure Flood Terrorism Funding Sources and Estimated Costs WSDOT Local Bridge Program, PSRC, and Move Ahead Washington are funding agencies for bridge projects Strategy Vision/Objective Ensure all 24 bridges in the City have a National Bridge Inventory rating for the substructure, superstructure, and deck be in satisfactory to good condition. There are a total of 16 vehicle and 8 pedestrian bridges in the City of Tukwila with two vehicle bridges being jointly owned with neighboring jurisdictions. Mitigation Strategy By studying the required routine bridge inspections, the City has implemented a Bridge Program that conducts an annual report to observe and document the current condition of both vehicle and pedestrian bridges. Results from the annual report will illustrate repair recommendations and future bridge upgrades. 2-Year Objectives Begin the replacement of the 42nd Ave S Bridge. 5-Year Objectives Monitor bridges that require seismic upgrades and possible repairs/rehabilitation. Long -Term Objectives Maintain preventative maintenance procedures to extend the design life of the structures. City of Tukwila Hazard Mitigation Plan Page 23 27 Implementation Plan/Actions Analyzing the Annual City Bridge Inspection Report, City owned structures will receive prioritization of replacement, rehabilitation, and repair recommendations. Based on the 2024 report, there are a total of three bridges that require a wearing surface/deck repair/upgrades. The 42nd Ave S Bridge Replacement project is currently under design and anticipated to start construction in 2027. The project will replace a 75+ year old structure that has structural damage due to an over height freight truck strike resulting in restricting the bridge to one way traffic. The project currently has local, state, and federal funding grants to complete the replacement. Performance Measures The bridges in the City will continue to be inspected and analyzed for future repairs to extend the life of the structures. Levee Improvements Lead Points of Contact Sherry Edquid Partner Points of Contact King County Flood Control District Hazards Mitigated / Goals Addressed Upgrading levees to provide 500 year flood protection and repairing the Fort Dent Levee. Dam Failure Flood Funding Sources and Estimated Costs King County Flood Control District Strategy Vision/Objective Update and improve the following levees: Tukwila 205, Tukwila South and Desimone through new floodwalls and setback or raising of the existing earthen levees to protect the City of Tukwila by raising these levees to 500-year flood protection plus 3 feet of freeboard. . Repair a portion of the Fort Dent Levee where the bank has eroded and setback the levee. Note: This is just a repair and will not add additional flood protection. Mitigation Strategy By prioritizing the Tukwila 205 Levee improvements in an upstream to downstream direction, the percent of landprotected steadily increases over time. If construction were to instead progress downstream to upstream, levee failure could occur upstream of newly raised levees, and therefore flood the land area behind the improved levee section. For alternative analysis, design, and construction prioritization, the Tukwila 205 Levee has been divided into three main segments that correspond with the three Tukwila capital improvement projects identified in the Green River SWIF, then with further subdivision of each of these segments into two or three smaller subsegments. Prioritization is also informed by prior analyses of the existing Tukwila 205 Levee system that evaluated Green River water surface elevations and levee overtopping risk, scour, and geotechnical levee stability. The King County Flodd Control District is beginning design on the Desimone Levee which was previously damaged. In the meantime there is an emergency action plan in place should the Auburn USGS gage reach 10,000 cfs. 28 City of Tukwila Hazard Mitigation Plan Page 24 2-Year Objectives Repair and setback the Fort Dent Levee. Certify the Tukwila 205 Levee with FEMA. 5-Year Objectives Upgrade and setback the Gunter and Desimone Levee. Long -Term Objectives Upgrade the Ratolo upper, middle and lower levees and Christensen Road levees. Implementation Plan/Actions The City of Tukwila sent a letter to the King County Flood Control District (FCD) on May 1, 2019 and requested that FCD include budgets to reconstruct the Tukwila 205 levees within the next ten (10) years based on NHC report findings that the majority of the levee system in its current condition cannot be accredited to provide 100-year flood protection. However, the SQRA by the Army Corps of Engineers did recommend accreditation of the levee which the City is currently pursuing certifying the levee with FEMA. The existing Tukwila 205 Levee must be updated and improved through new floodwalls and setback or raising of the existing earthen levees to protect the City of Tukwila from flooding. The Green River System -Wide Improvement Framework (SWIF) declared the level of protection standard as the 500- year flood event plus three feet of freeboard. As important as the freeboard standard, the levees also must meet factors of safety for geotechnical stability under a variety of conditions including flood induced scour, drawdown, and seismic events. The proposed priority sequence for construction of these flood protection improvements generally starts at the upstream end of the Tukwila 205 Levee, near river mile 16.7, and then proceeds downstream to near river mile 12.4 (see previous map). Upstream of the Tukwila 205 Levee, near South 200th Street, there are existing levees that currently provide 100-year level of flood protection (this includes the Frager Lowest Levee between the Tukwila 205 Levee and South 200th Street). The Tukwila 205 Levee will tie into these 200th Street levees, which also needs to be improved in order to provide 500-year event plus three feet. Performance Measures Have our levees meet the protection standard. *Note: This strategy will be updated once the After Action process has been completed in response to the December 2025 flooding event. City of Tukwila Hazard Mitigation Plan Page 25 29