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2025 NPDES Stormwater Management Program Plan (SWMP)
City of Tukwila Public Works 2025 Stormwater Management Program Ta • le of ontents 1.0 INTRODUCTION 3 2.0 PERMIT COORDINATION EFFORTS (55.A.5) 4 2.1 COORDINATION AMONG PERMITTEES 4 2.2 COORDINATION AMONG CITY DEPARTMENTS 5 3.0 STORMWATER PLANNING (S5.C.1) 5 3.1 INTER -DISCIPLINARY TEAM 5 3.2 LONG-RANGE PLAN UPDATES 5 3.3 LOW IMPACT DEVELOPMENT 6 3.4 STORMWATER MANAGEMENT ACTION PLAN (SMAP) 6 4.0 PUBLIC EDUCATION AND OUTREACH (S5.C.2) 6 4.1 REGIONAL PROGRAM ELEMENTS 4.2 BUILDING GENERAL AWARENESS 4.3 AFFECTING BEHAVIOR CHANGE 4.4 STEWARDSHIP OPPORTUNITIES 6 7 8 8 5.0 PUBLIC INVOLVEMENT AND PARTICIPATION (S5.C.3) 9 6.0 MS4 MAPPING AND DOCUMENTATION (S5.C.4) 9 7.0 ILLICIT DISCHARGE DETECTION AND ELIMINATION (S5.C.5) 10 7.1 IDDE PROCEDURES 11 7.1.1 Field Screening 11 7.1.2 Incident Response 11 7.2 IDDE COMMUNICATIONS 11 7.2.1 Incoming IDDE Reports 11 7.2.2 External IDDE Notifications 12 7.3 REGULATORY MECHANISMS 12 7.4 EMPLOYEE TRAINING 12 7.5 IDDE RECORDKEEPING 12 8.0 CONTROLLING RUNOFF FROM DEVELOPMENT AND CONSTRUCTION (S5.C.6) 13 8.1 REGULATORY STANDARDS AND ENFORCEABLE MECHANISMS 13 8.2 PROCESS FOR PERMITTING, SITE PLAN REVIEW, INSPECTION AND ENFORCEMENT 14 8.3 NOTICE OF INTENT (NOI) 15 8.4 EMPLOYEE TRAINING 15 9.0 OPERATIONS AND MAINTENANCE (S5.C.7) 15 9.2 MAINTENANCE OF PRIVATE STORMWATER FACILITIES 15 9.3 MAINTENANCE OF PUBLIC STORMWATER FACILITIES 16 9.3.2 Street Waste Disposal 16 9.3.3 Spot Checks 16 9.4 RECORDS MAINTENANCE AND MANAGEMENT 16 9.5 MUNICIPAL PRACTICES 17 9.6 STORMWATER POLLUTION PREVENTION PLAN (SWPPP) 18 9.7 STORMWATER BMP EMPLOYEE TRAINING 18 10.0 SOURCE CONTROL PROGRAM FOR EXISTING DEVELOPMENT (S5.C.8) 18 11.0 MONITORING AND ASSESSMENT (S8) 19 12.0 REPORTING AND RECORDKEEPING REQUIREMENTS (59) 19 12.1 ANNUAL REPORT 12.2 RECORDKEEPING REQUIREMENTS 20 20 2;IPaa 2025 Stormwater Management Program FRE UENTLY USED ACRO Y S AKART All known, available and reasonable methods of prevention, control, and treatment. BMP Best Management Practice EPA U.S. Environmental Protection Agency KML Keyhole Markup Language LID Low Impact Development MEP Maximum Extent Practicable MS4 Municipal Separate Storm Sewer System NOI Notice of Intent NPDES National Pollutant Discharge Elimination System Permit Western Washington Phase 11 Municipal Stormwater Permit SAM Stormwater Action Monitoring SWMP Stormwater Management Program TMDL Total Maximum Daily Load 1 The City of Tukwila manages its stormwater drainage system (MS4) in compliance with the Western Washington Phase II Municipal Stormwater Permit. "Stormwater" is regulated under both the Federal Clean Water Act (CWA) and the State Water Pollution Control Act. Stormwater is defined in the permit as "runoff during and following precipitation and snowmelt events, including surface runoff, drainage or interflow". Stormwater can become polluted when rain or snow meets human development like roads, parking lots and buildings, and can become polluted by activities such as illegal dumping, illicit stormwater connections or improper maintenance of stormwater systems. Most outside drains carry stormwater to local surface waters, like creeks and rivers, and ultimately flow into Puget Sound. Our permit requires us to reduce the discharge of stormwater to the "Maximum Extent Practicable". The Surface Water Management Program (SWMP) is targeted at reducing stormwater pollution generated from all land owned and operated by the City of Tukwila, including rights -of -way, parks, and all other facilities. Managing stormwater and meeting permit requirements is reliant on enacting operational and structural best management practices. This is termed AKART or All Known, Available and Reasonable methods of prevention, control and Treatment. When we find a better way of working that reduces pollution and meets the many other factors to consider, like cost, we include those new efforts. This is known as adaptive management. The City provides an Annual Report for the previous year's activities that documents adaptive management efforts. Both current and past annual reports and SWMPs are on the City's website at: https://www.tukwilawa.gov/departments/public-works/npdes/ I Page 2025 Stormwater Management Program STORMWATER MANAGEMENT PROGRAM COMPONENTS The Permit was reissued in 2024 and now includes new permit requirements that allow time to develop and implement them. New requirements are summarized in Appendix A. NPDES Permits run in 5-year terms concurrently, meaning that program requirements from past permits still apply even when not fully described in the most recent iteration. The '24 — '29 Phase II Permit contains the following program components: • S5.C1 Stormwater Planning • S5.C2 Public Education and Outreach • S5.C3 Public Involvement and Participation • S5.C4 MS4 Mapping and Documentation • S5.C5 Illicit Discharge Detection and Elimination • S5.C6 Controlling Runoff from New and Redevelopment, and Construction Sites • S5.C7 Stormwater Management for Existing Development • S5.C8 Source Control Program for Existing Development • S5.C9 Operations and Maintenance In addition to the SWMP components, the Permit contains special conditions covering: • Total Maximum Daily Load Requirements (none currently applicable to Tukwila) • Monitoring and Assessment • Reporting and Signatory Authority Requirements 2.0 PEMITC O DINATION EFF • ' TS Each Permittee must implement a Stormwater Planning program to inform and assist in the development of policies and strategies such as water quality management tools to protect receiving waters. This requires the full complement of city staff. For instance, Information Technology staff are needed to administer the many computer systems of tracking and record keeping, to provide labor-saving devices and paperless processes that allow for immediate record retrieval and permanent retention. Tukwila issued Administrative Order 900-08 included in Appendix B to form an interdepartmental team to address ail requirements and remove barriers to compliance. 2.1 Coordination Among Permittees To help clarify roles and responsibilities for the control of pollutants between physically interconnected and permitted MS4s, Tukwila implements watershed coordination efforts with adjacent entities as necessary. Also, to avoid conflict related to plans, policies and regulations, the City coordinates management activities for shared water bodies and/or watersheds. As a matter of course, the City interacts with the following regional groups and stormwater management forums: • Regional Permit Coordinators (Phase I and Phase II jurisdictions) • Stormwater Outreach for Regional Municipalities (STORM) (Page 2025 Stormwater Management Program • Regional Operations and Maintenance Program (ROADMAP) • Business Inspection Group (BIG) • Lower Duwamish Source Control Working Group and Duwamish Inspectors Group (DIG) • WRIA 9 (Water Resource Inventory Area) Stakeholder Watershed Planning (17 different participating jurisdictions) • The Stormwater Action Monitoring Work Group (SAM) 2.2 Coordination Among City Departments Internally, the implementation of Tukwila's SWMP Plan is coordinated through a City Administration Policy (900-08) that defines departmental responsibilities and actions. Coordination elements include program development, reporting, notification, documentation, recordkeeping, data tracking and employee training. A coordinator works with all representatives to ensure timely actions are taken. In the event timely actions are not taken, the City files General Condition 20 (G20) notifications to the Department of Ecology that explain the steps taken or planned to reduce, eliminate, or prevent reoccurrence of the non-compliance. 3.0 STOR ATE "' PLANNI G In 2025, Tukwila will continue City-wide stormwater management planning with a collaborative multi -departmental framework, utilizing the skills of many individuals whose work either focuses on or touches stormwater planning. These professionals are brought together to determine how to improve the quality of water entering and leaving through the MS4. Stormwater Planning includes the following four elements: 3.1 Interdisciplinary Team The bulk of stormwater planning work is done by Interdisciplinary Team members from the City's Department of Public Works, the Department of Community Development and the Technology and Information Services Department. The team's make-up and participation is reviewed upon staff turnover, to accommodate workload/duties adjustments, as well as interest and expertise in the subject. The team informs and assists in the development of the permit - required Stormwater Management Program, and works on stormwater planning and stormwater-related policy development. The team meets to discuss stormwater topics as they relate to efforts like SMAP and the development of the City's update to the Surface Water Comprehensive Plan. 3.2 Long-range Plan Updates Tukwila reviews water quality and watershed protection policies, strategies, codes and other measures to identify stormwater management needs. This work also informs whether locally initiated or state -mandated long-range land use plan updates are called for (those designed to accommodate growth or transportation for protecting/improving receiving water health). Per Permit section S5.C.1.6.i (b), the City developed a report describing long-range planning coordination that has taken place during the current Permit term. Multiple capital infrastructure projects (CIP) are planned through this effort including the funding and schedule for completion. This CIP is included as Appendix C. Wage 2025 Stormwater Management Program 3.3 Low Impact Development The City's Permit Center plan review staff continue to review development permit applications against the city's Low Impact Development (LID) code. Principles and LID BMPs as the preferred option for development and re -development. Accordingly, LID BMPs and LID principles are encouraged as a preferred and commonly used approach to site development and required infeasibility tests ensure LID has been considered fully. Annual assessments help identify administrative or regulatory barriers. Changes may be implemented when local development -related codes, rules, standards, or other enforceable documents support their need. 3.4 Stormwater Management Action Plan (SMAP) Tukwila will begin to implement components of the Stormwater Management Action Plan (SMAP) developed in the last permit term for the Riverton Creek basin. The multi -step SMAP effort conducted with the help of OTAK included development of a watershed inventory, identification of existing water quality conditions for each receiving water catchment area in the city, assessment and prioritization of identified receiving waters and the identification of several projects in the basin that will address water quality. SMAP assessment and prioritization functions to: • Conserve, protect and/or restore receiving waters through stormwater and land management strategies that act as water quality management tools. • Reduce pollutant loading. • Address hydrologic impacts from existing development and help plan for expected future buildout conditions. 4.0 PU - LIC EDUCATIO AN '; OUTREACH The City's Public Education and Outreach program serves a diverse Tukwila community. Our Public Education efforts are strategically driven to deliver effective personal messaging to residents, property owners, fixed and mobile businesses, to build general awareness, effect behavior change, and create stewardship opportunities for residents and interested outside parties. 4.1 Regional Program Elements The City partners with neighboring jurisdictions in Watershed Coordinated efforts and utilizes various regional resources and public partnerships, including but not limited to: Stormwater Outreach for Regional Municipalities (STORM) • Incorporation of practical municipal stormwater information obtained from regular STORM meetings, symposiums, networking, programs, and resources. • Co -branding Puget Sound Starts Here (PSSH) on printed materials; and linking PSSH events, materials, and tools from the City's stormwater management web page. Washington Stormwater Center (WSC) 6IPaL 2025 Stormwater Management Program • Utilization of WSC municipal stormwater management and training resources to improve public education and outreach communications, framing of messages, designing of ideas for targeted audiences, engagement of overburdened communities, and creation of appropriate outreach materials. Municipal Resource Service Center/ Washington Cities Insurance Agency • Utilizing the expertise and cumulative knowledge of these resources to educate citizens. Regional Meetings • Participating in regional groups (see Section 2.1) to collaborate on Permit -related public education opportunities. 4.2 Building General Awareness The City of Tukwila implements a multi -media Stormwater General Awareness Program that utilizes many messaging media via the City of Tukwila Facebook Page and the City of Tukwila Hazelnut Publication, and Utility billing inserts. Tukwila schools report there are over 80 languages spoken within their district. Table 1 identifies the various Permit -required General Awareness program elements, target audiences, and outreach approaches used by Tukwila. Table 1. Permit -required public education and outreach general awareness program elements: Target Audience Description Subject Area City Website and Facebook Page General Public (including school -age children); and businesses (home -based or mobile) Permit information, Stormwater Design/BMP Manual, Spill Hotline, volunteer opportunities (curb marker), stormwater/surface water issues and events, residential & charity car washing, rain barrels, pet waste management, GIS maps and private water quality facility inspection information. General impacts of stormwater on surface waters (including impervious) City Web Page Engineers, contractors, developers, land use planners Various types of information including LID infeasibility study, LID criteria, GIS maps, technical guidance and focus sheet. Low impact development (LID) principles and LID BMPs Public Displays and Printed Materials at Permit Center and in mailed Utility billing inserts General Public and businesses (home -based or mobile), engineers, contractors, developers, land use planners Various types of information including spill hotline, volunteer opportunities (Green Tukwila), residential car washing, rain barrels, pet waste management, LID infeasibility study, criteria, maps, technical guidance and focus sheet. General impacts of stormwater on surface waters (including impervious); Low impact development (LID) principles and LID BMPs Green Tukwila General Public (including school -age children) Municipal stormwater management educational, natural yard care and green- Tukwila literature distribution at the annual event. City subsidized rain barrels for purchase. General impacts of stormwater on surface waters (including impervious) Recycling Events (Spring and Fall) General Public (including school -age children) Municipal stormwater management educational, natural yard care and green- General impacts of stormwater on surface waters (including impervious) Page 2025 Stormwater Management Program clean literature at the two annual events. City subsidized rain barrels for purchase. Partnering with Salmon General Public (including A salmon incubator installation General impacts of stormwater Incubator Hatchery Operations school -age children) designed to educate the public regarding the salmon lifecycle on surface waters (including impervious) (from eggs to fry) and the connection to surface water resources (school aged participation). Salmon release in Spring. City Recycling Webpage General Public Garbage, recycling and food & yard waste management General impacts of stormwater on surface waters (including household hazardous waste issues and composting) The City collaborates with StormFest, an annual program that aims to reduce and/or eliminate behaviors and practices that cause or contribute to adverse stormwater impacts by educating school -aged children. In 2024, Tukwila staff provided educators to StormFest, a three-day interactive stormwater festival held at Des Moines Beach Park. In 2025, Tukwila Staff will again support StormFest members including Highline School District, the Environmental Science Center, and Enviro-Issues. Tukwila has sent educators and staff for the past several years to this outdoor in -stream education and plans to continue this in the foreseeable future. 4.3 Affecting Behavior Change In 2024, Tukwila Staff assisted in teaching the Stormfest Curriculum at the festival. In addition, the City joined the Adopt A Drain program attended by many other local municipalities. Residents are encouraged to keep drains clean and clear of blocking matter which causes local flooding and the discharge of solid waste to surface waters. This complements the City program of Adopt A Spot where citizens are encouraged to keep areas of parks and trails free from litter, waste and debris and report their activities, see Appendix F. 4.4 Stewardship Opportunities The City uses a variety of activities and events to raise stormwater quality awareness and to encourage community engagement and adoption of environmentally friendly behaviors. Table 2 describes stewardship outreach efforts that are offered or promoted by the City throughout 2024. Table 2. Permit -required public education and outreach stewardship program elements: Description Subject Area Green Tukwila Partnership Environmental education and onsite General impacts of stormwater on surface restoration work parties. Together with waters Forterra, EarthCorps, Duwamish Alive Coalition, Partner in Employment, the Service Board, Dirt Corps, King County Parks, and the Tukwila community, Green Tukwila Partnership will care for public parks and natural open spaces across the city. Over the next 20 years, the partnership will work to Pa 2025 Stormwater Management Program restore and maintain 138 acres of Tukwila's urban forest. Adopt -a -Drain Program Individuals, community organizations and businesses can participate by adopting a storm drain in their neighborhood. Their efforts are tracked in an online account. Encourages and enforces a commitment to stormwater pollution prevention. Adopt -a -Spot Program Adopt -A -Spot is a year around a partnership between Tukwila Parks and Recreation and residents, community groups, and businesses to help beautify Tukwila's parks and trails. Citizens are encouraged to "help to keep open spaces clean and green" removing solid and often plastic waste from the surface water systems near their favorite trail. Salmon hatchery sampling support Assisting Sabey Corporation with water quality testing prior to release of Spring Hatch fry salmonids Encourages and enforces commitment to surface water habitats. Backyard Wildlife teaches people of all ages how to create a welcoming environment for wildlife General impacts of stormwater on surface waters Touch a Truck A gathering of Civil Service Vehicles at the Southcenter Mall for kids to experience hands on the fun of public service. Vans are turned into billboards displaying posters with stormwater messaging 5.0 PU.->LIC INVOLVEMENT AND PARTICIPATION Within the Surface Water and Transportation Comprehensive Plans, SWMP Plan and SMAP frameworks, the City provides ongoing public involvement, participation, and decision -making opportunities. Furthermore, Tukwila continues to identify and implement more effective ways to engage the overburdened community. These efforts include translation of printed materials into some of the eighty-nine (89) languages spoken in Tukwila Schools. Throughout the year, the public is encouraged to comment on Comprehensive Planning, the SWMP Plan, and SMAP. Public involvement and participation outreach efforts involve mailings and postings of important and timely messages and meeting invitations on the Public Works Stormwater Management web page, and through specialized media, including the Hazelnut and the Tukwila Web Page and Facebook Page. The following includes specific public involvement and participation opportunities highlighted for 2025: • Posting of the 2024 annual report and this 2025 SWMP Plan by March 31 to the City State Secure Access Washington Account. • Public opportunities as available during 2025-2026 as the new Surface Water Comprehensive Plan is implemented with Council Approval. • Posting routine state and local public notices when required for certain construction and planning efforts. • Public information and Involvement open houses at The Sullivan Center on March 13th and 20th during the afternoon and evening to provide the public with ample opportunity to learn about the effort and comment. • Announcements in the City publication Hazelnut and Facebook account along with Utility billing inserts inviting comments on the SWMP and volunteer opportunities. 1P a �p 2025 Stormwater Management Program 6.0 S4 APPIN AND DOCU E TATION The City implements a comprehensive program to map and document the municipal separate storm sewer system (MS4). Ongoing mapping involves procedures to identify, analyze and process Geographic Information Systems (GIS) data. Maintained feature mapping data includes stormwater conveyance infrastructure, outfalls, discharge points, receiving waters, treatment and flow control facilities, tributary conveyances, drainage areas, land use, connections, and other components. IT, GIS, Public Works Operations, and Asset Management work together to generate MS4 feature data. These efforts help the City meet Permit -required stormwater management program goals. Municipal work that benefits from mapping information includes future planning, economic development, engineering review, public education, spill response, private water quality facility and source control inspections, construction, operations, and maintenance. Through an external web -based application portal, Tukwila also provides map -based information resources for residents, visitors, engineers, planners, designers, and emergency responders. In 2025, the City of Tukwila plans to support existing MS4 mapping by continuing to: • Improve stormwater data as needed within the Geographic Information System (GIS) to enhance user experience, ensure current and future regulatory requirements, and to serve as a system of record. • Further Implement a Computerized Maintenance Management System (CMMS) called Lucity designed to provide and track work orders and service requests. The CMMS may also help manage stormwater assets and perform risk/cost analyses. • Operations acquired a new CCTV video inspection truck and is beginning an updated program of inspection and documentation of MS4 asset conditions. • Integrate various asset management program software to assist in stormwater resource allocation, prioritization, funding strategies and maintenance schedules. To fully meet Permit requirements, the City will respond to all mapping requests in compliance with national security laws and directives. Tukwila makes this GIS geospatial data easily available to the public via the internet on the Tukwila Maps and GIS webpage, with viewable and downloadable MS4 mapping formats. 7.0 ILLICIT DISCHARGE DETECTION A D ELI I ATI N The City carries out a comprehensive Illicit Discharge Detection and Elimination (IDDE) program for preventing, detecting, characterizing, tracing, and eliminating stormwater pollution. Permit - required minimum performance measures involve: • Methods for initiating investigations. • Procedures for recordkeeping, reporting and correcting or removing illicit connections, spills, and other illicit discharges. • Processes for informing public employees, businesses, and the public of hazards associated with illicit discharges and improper disposal of waste. P S 2025 Stormwater Management Program • Public education and code enforcement mechanisms that effectively prohibit non- stormwater discharges into the MS4 to the maximum extent. • Training programs for all municipal field staff who are responsible for identification, investigation, termination, cleanup, and reporting of illicit discharges (including spills and illicit connections) see Appendix E. 7.1 IDDE Procedures Tukwila uses the Illicit Discharge Detection and Elimination Field Procedures and Response Plan (IDDE Plan) provided in the MANUAL which provides a framework for: • Characterizing any found or reported illicit discharges. • Tracing illicit discharge sources (visual inspections monitoring of pollutants). • Eliminating discharges: notification of appropriate authorities, notification of property owner, technical assistance, follow-up inspections and use of compliance strategies (escalating enforcement and legal actions). • Developing and implementing employee training and recordkeeping programs. 7.1.1 Field Screening Field screening is used for the inspection and evaluation of the City's MS4 to identify and eliminate potential sources of stormwater pollution; our procedures consider local stormwater system characteristics to help identify water quality concerns. Field screening is performed in tandem with ongoing program assessment, inspection, and cleaning of the MS4 (see Section 9.0). In accordance with Permit requirements, the City field screens a minimum of 12% of the MS4 on average each year. 7.1.2 Incident Response Tukwila implements procedures for spill response and improper disposal into the MS4. In doing so, designated city personnel respond to incidents and implement procedures to control and eliminate sources of stormwater pollution (with priority given to incidents that impact public safety, public health, and the environment). IDDE Incident Response Procedures provide for: • Definition of roles and responsibilities (both internal and external). • Spill response, emergency response, and outside agency coordination as needed. • Standardized reporting procedures, investigations, documentation, and follow-up procedures. 7.2 IDDE Communications Established communication processes result in well -coordinated IDDE incident responses. Public Works Environmental Compliance staff that are assigned to track IDDE complaints obtain all necessary and relevant information for the purpose of evaluating potential public health, public safety, or environmental threats. If the report is credible, a formal IDDE compliance investigation is launched to address the nature of the discharge, determine the source of the discharge, identify the responsible party, and eliminate the contamination by removal of all discharged materials. The elements of an IPa> 2025 Stormwater Management Program effective investigation include immediate characterization of the illicit discharge threat, initiation of notifications, site investigation, documentation of conditions and completion of recordkeeping. 7.2.1 Incoming IDDE Reports Illicit discharge reports are communicated to the City in various ways including, but not limited to: • Direct calls to the Spill Hotline (206-433-1860), e-mail, SeeClickFix© web/mobile application complaints, after-hours dispatch calls, and in -person communication. • Information received from internal city operations (staff communication, personal observation, inspection program referrals and MS4 field screening operations). • Referrals from Ecology's Environmental Report Tracking System Reports. • External agency and franchise servicers direct referrals. 7.2.2 External IDDE Notifications Once information concerning a suspected or known illicit stormwater discharge is reported to or received by City staff, proper notification sequences are triggered that are based upon the severity of the incident. If necessary, appropriate external entities are notified, which may include: • Local Fire District • Department of Ecology • Local Sanitary Sewer Authority • Public Water Utility • Tukwila Police • King County Public Health • Adjacent jurisdictions or agencies 7.3 Regulatory Mechanisms Ordinances, Tukwila Municipal Code (TMC) and other enforceable documents enable the City to implement the IDDE program through three regulatory mechanisms: • • • TMC 14.30.180: Surface and Stormwater-Illicit Discharge Detection and Elimination TMC 14.30: Surface and Stormwater Management TMC 8.45: Code Enforcement 7.4 Employee Training All affected City employees receive in-house Permit -required IDDE training as needed detailed in Appendix E. Affected staff include those who are responsible for identification, investigation, termination, cleanup, and reporting of illicit discharges. Follow-up training is provided as needed to address changes in procedures, techniques, requirements, or staffing, which may in include annual refreshers, review of case -studies and informal training in the form of staff meetings. 1 I Pugs 2025 Stormwater Management Program 7.5 IDDE Recordkeeping IDDE compliance investigations involve rapid assessment of threats to public health, public safety, or the environment. Effective Tukwila IDDE investigations begin with procedures that involve the collection and recording of relevant and accurate incident information and documentation such as photos and field indicator tests. Accordingly, IDDE incident recordkeeping utilizes the City SAW Account to document each effort for annual reporting. Requests that contain the following standard information: date of incident, location, reporting source, pollutant, cause, corrective actions, photos, various forms of written communication and progress summary notes. In 2024, IT is developing an improved web -based portal workflow within Lucity that will produce a more comprehensive IDDE investigatory format for reporting and compliance. Pursuant to Special Condition S9.A, the City provides a yearly summary of IDDE incidents with the permit required Annual Report (Section 12.1). 8.0 CONTROLLING U OFF FRO NE AN ' REDEVELOP ENT, AND CONST UCTIO SITES Tukwila's Development and Construction Runoff Control program promotes public health, safety, and welfare by establishing a comprehensive approach to surface and storm water problems. This program reduces flooding, erosion and sedimentation, prevents/mitigates habitat loss, enhances groundwater recharge, and prevents water quality degradation. Drainage review is required for any proposed project (except those proposing only maintenance) that is subject to a City of Tukwila development permit or approval. Specific program elements include permitting, basin and sub -basin planning, land use regulation, facility construction approval, and post construction inspections. The City of Tukwila implements and enforces this Permit -required program to reduce pollutants in stormwater runoff from new development, redevelopment, and construction sites. The minimum performance measures of this Permit -required program are: • Utilizing ordinances or other enforceable mechanisms to address runoff from new development, redevelopment, and construction site projects. • Using requirements, limitations and criteria approved by Ecology. • Implementing a permitting process with site plan review, inspection, and enforcement capability to meet the standards. • Making available, as applicable, the link to the electronic Construction Stormwater General Permit Notice of Intent (NOI) form for construction activity and, as applicable, a link to the electronic Industrial Stormwater General Permit NOI form for industrial activity to representatives of proposed new development and redevelopment. • Enforcing local ordinances to control runoff from sites covered by stormwater permits issued by Ecology. • Ensuring proper training for all development and construction staff involved with this program. Page 2025 Stormwater Management Program 8.1 Regulatory Standards and Enforceable Mechanisms In compliance with current Permit requirements, a combination of codes and adopted standards enables the City to control runoff from new development, redevelopment, and construction sites. In 2022, Tukwila updated the necessary standards and enforceable mechanisms through the adoption of the 2021 King County Surface Water Design Manual (KCSWDM Updated 2024). This effort achieves equivalency with Ecology's Stormwater Management Manual for Western Washington. Additionally, Tukwila employs the following applicable local regulations, rules, and standards: • TMC 14.30: Tukwila Surface and Stormwater Management Code, including adoption of the most current KCSWDM. • TMC 8.45: Code Enforcement • TMC 18.45: Zoning Environmentally Sensitive Areas • Tukwila Infrastructure Design and Construction Standards The Ecology -approved KCSWDM specifies limitations and criteria used to implement the minimum requirements in Appendix 1 of the Permit to protect water quality and to reduce the discharge of pollutants to the Maximum Extent Practicable (MEP). It also satisfies the State requirement under Chapter 90.48 RCW to apply All Known, Available and Reasonable Methods of Prevention, Control and Treatment (AKART) prior to discharge. KCSWDM limitations and criteria include: • Site planning requirements • Best Management Practice (BMP) selection criteria • BMP design criteria • BMP infeasibility criteria • LID competing needs criteria • BMP limitations 8.2 Process for Permitting, Site Plan Review, Inspection and Enforcement Tukwila administers and reviews site engineering plans and development permits to address clearing, grading, paving, stormwater management system, roadway, and right-of-way activities such as Franchise Utility upgrades to communication and power systems. Furthermore, internal procedures provide for: project approval processing, inspection authority, inspection processes, inspection criteria, pre -acceptance review, re -inspection, and enforcement. The City's stormwater permitting process involves: • Review of all stormwater site plans for proposed development activities. • Inspection, prior to clearing and construction, of all permitted development sites that have a high potential for sediment transport as determined through plan review. • Inspection of all permitted development sites during construction to verify proper installation and maintenance of required erosion and sediment controls. 14 Page 2025 Stormwater Management Program • Management of maintenance activities to inspect all stormwater treatment and flow control BMPs/facilities and catch basins in new residential developments every six months, until 90% of the lots are constructed (or when construction has stopped and the site is fully stabilized), to identify maintenance needs and enforce compliance with maintenance standards as needed. • Inspection of all permitted development sites upon completion of construction and prior to final approval or occupancy to ensure proper installation of permanent stormwater facilities. Verification that a maintenance plan is completed and responsibility for maintenance is assigned for stormwater treatment and flow control BMPs/facilities. • Compliance with Permit requirements to achieve at least 80% of required inspections. The Runoff Control program also includes recordkeeping and documentation that uses modular TRAKiT© e-Gov software, a system that creates, stores, and processes all permitting information. TRAKiT© documents formal permit applications, inspection records, administrative entries, attachments, alerts, project holds and enforcement. TRAKiT© is tightly linked with the City's GIS system to provide real time tracking status inspection. 8.3 Notice of Intent (NOI) The City of Tukwila continues to make Notices of Intent (NOI) available to new development and redevelopment proponents and representatives when appropriate. These include NOls triggered under the NPDES Construction Stormwater General Permit and the NPDES General Industrial Stormwater Permit. 8.4 Employee Training The City ensures proper formal training (for example CESCL) for all staff whose primary job duties involve Permit -required activities associated with the Development and Construction Runoff Control Program. When necessary, follow-up training occurs in the form of review during routine staff meetings to address changes in procedures, techniques, or staffing. The City documents and maintains all required training records, see Appendix E. 9.0 OPE ATIO S AN ' AI TE ANCE To prevent or reduce stormwater impacts, Tukwila implements a Permit -required program to regulate, inspect and document private and public maintenance activities. Implementation of standards under this program are as protective, or more protective, of facility function than those specified in Ecology's Stormwater Management Manual for Western Washington. To meet these requirements, Tukwila uses the 2021 King County Surface Water Design Manual (KCSWDM), and other enforceable mechanisms. Condition assessments and inspections of private and public stormwater systems involve assessing IDDE potential, measuring sediment levels, evaluating vegetation growth, inspecting for structural damage, and noting defects and problems. Proper system maintenance is necessary to protect downstream natural resources from flooding and water quality impacts. Private and public facilities and components inspected include, but are not limited to: detention 15I Pai 2025 Stormwater Management Program ponds, infiltration facilities, detention tanks/vaults, flow control structures, catch basins and newer green stormwater water quality infrastructure. 9.2 Maintenance of Private Stormwater Facilities Established KCSWDM standards, City ordinances, and other enforceable mechanisms identify requirements and responsibilities for the operation and maintenance of private stormwater systems. Tukwila Public Works has established a program for long-term O&M inspection and enforcement of privately -owned stormwater treatment and flow control BMPs/facilities that discharge to the MS4. The following local regulations apply: • TMC 14.30: Tukwila Surface and Stormwater Management Code • TMC 8.45: Code Enforcement The Private Maintenance Inspection program includes annual inspections of all Permit -regulated facilities. Scheduled inspections are conducted throughout the year. After inspections, findings are communicated to property owners to indicate the need for corrective action. Remarks and comments documenting each private maintenance inspection are tracked within Trakit© (see Section 9.4). 9.3 Maintenance of Public Stormwater Facilities Public stormwater infrastructure owned or operated by Tukwila includes the system (including roads with drainage systems, municipal streets, catch basins, curbs, gutters, ditches, manmade channels, or storm drains) designed or used for collecting or conveying stormwater. Publicly owned assets are inspected to identify structural concerns, sediment levels, or other functional defects. All inspection data are recorded in Lucity©. Permit -required maintenance timelines for public stormwater conveyances include: • Annual inspection of all stormwater treatment and flow control BMPs/facilities (including but not limited to detention facilities, permanent treatment BMPs/facilities; and bioretention, and permeable pavements). • Inspection of all catch basin circuits and outfalls every year. This program utilizes location data and GIS capabilities to assess larger drainage systems with limited resources. An entire circuit is cleaned once the inspections indicate the need as detailed in Appendix D Catch Basin Alternative Inspection Protocol. 9.3.2 Street Waste Disposal The City manages the collection and disposal of routine stormwater-related wastes (both liquids and solids) that are generated from City -owned property. These wastes are properly disposed in compliance with Permit requirements, and in accordance with Appendix 6 - Street Waste Disposal guidelines. • A limited amount of decant stormwater liquids are discharged into Valley View Sewer District sanitary sewer at an approved and permitted Tukwila Maintenance facility trash rack location. • Uncontaminated solids are transported to the King County Renton Decant Station. This regional disposal facility is available for use by public agencies (including Tukwila) to manage and treat uncontaminated MS4 solids. 16IPage 2025 Stormwater Management Program • PRS Group Washington in Tacoma serves as a disposal option when the King County facility is not available; or when known or suspect contamination is encountered. • Maintenance and disposal operations are contracted out occasionally on an as -needed basis at some City Facilities. 9.3.3 Spot Checks Tukwila tracks precipitation amounts by using the SeaTac publicly available data. Public Works staff log these data and calculate their running totals (24-hr/10-year recurrence) to determine if major storm events have resulted. In -person spot checks of all Tukwila -owned stormwater treatment and flow control BMPs/facilities occur immediately after all documented major storm events. Corrective actions are then implemented as needed in accordance with 2021 King County Surface Water Design Manual Maintenance Requirements. 9.4 Records Maintenance and Management Public Works utilizes Lucity© for private and public stormwater systems records maintenance and management. Lucity© is a GIS-centric enterprise asset management system that manages, tracks and analyzes stormwater infrastructure assets. Inspectors also use the Community Development software from the Permit Center to track inspections of New Development and Redevelopment sites, Business Source Control and Fats, Oils and Grease wastewater compliance. 9.5 Municipal Practices Tukwila implements stormwater pollution prevention practices that address municipal activities and operations associated with all lands owned or maintained by the City. Affected public lands include streets, parking lots, buildings, parks, open space, road rights -of -way, maintenance yards, and stormwater treatment and flow control BMPs/facilities. An Interdepartmental Team provides coordination of City-wide efforts to reduce polluted stormwater runoff into and out of municipal drainage systems, facilities and properties to the maximum extent practicable. The team ensures that practices and procedures are fully implemented, and that they comply with the applicable NPDES Permit requirements. All affected city operations, and activities (including outside contracted work) must adhere to a combination of guidance documents and materials referenced below that describe specific stormwater pollution best management practices which have been adopted for all lands owned or maintained by the City of Tukwila. a. 2021 King County Stormwater Design Manual (KC SWDM), adopted per Tukwila Municipal Code (TMC) 14.30 and the NPDES Permit (Section S5.C.6.a). This document provides minimum inspection and maintenance requirements (Appendix A) for all publicly and privately owned stormwater treatment and flow control BMPs/facilities and components. 17',IPe 2025 Stormwater Management Program b. 2021 King County Stormwater Pollution Prevention Manual (SPPM). This document provides best management practices (BMPs) for managing stormwater; it lists detailed information and description of actions to prevent/eliminate stormwater, surface water, and groundwater contamination. Municipal -related stormwater pollution prevention practices and procedures covered in the SPPM involve activities such as storage of pesticides and fertilizers, pressure washing, stationary fueling operations, vehicle and equipment repair and maintenance, and snow response operations. c. 2016 King County Site Management Plan (KCSiMPIa). This document addresses site -specific BMPs: roadway maintenance operations, utility maintenance, maintenance of stormwater facilities, and other right-of-way (ROW) structure work. Maintenance activities covered under these guidelines include, but are not limited to street sweeping, maintaining and cleaning enclosed drainage systems, and mowing bio-swales and cleaning water quality vaults. 9.6 Stormwater Pollution Prevention Plan (SWPPP) The City implements a written Stormwater Pollution Prevention Plan (SWPPP) for the Public Works and Parks/Golf Maintenance facilities. These sites function as a heavy equipment maintenance and material storage yards subject to Permit requirements. The SWPPP was updated in 2022 to fully meet permit requirements per S5.C.8.f. The SWPPP includes the following information: • A detailed description of the operational and structural BMPs in use. • A BMP implementation schedule. • Annual inspections of the facility (including visual observations of discharges, to evaluate the effectiveness of the BMPs). • Activities conducted at the facility which may be exposed to precipitation or runoff and could result in stormwater pollution. • A site map showing the facility's stormwater drainage, discharge points, and areas of potential pollutant exposure from the materials and equipment stored on -site. • A plan for preventing and responding to facility spill incidents and maintenance needs. 9.7 Stormwater Pollution Prevention Training (SWPPP) The City implements an ongoing stormwater BMP training program (Appendix E) for all Tukwila employees that conduct municipal -related job functions that may impact stormwater quality (building inspection, construction, operations, or maintenance). Training addresses the importance of protecting water quality, operation and maintenance standards, inspection procedures, relevant SWPPPs, selection of appropriate BMPs, ways to perform job activities to prevent or minimize impacts to water quality, and procedures for reporting water quality concerns. Follow-up training is provided as needed to address changes in procedures, techniques, requirements, or staffing, which may include annual refreshers and informal training in the form of staff meetings. The City documents and maintains municipal -related training records, including dates, activities, course descriptions, and names and positions of staff in attendance. 1'I Pie 2025 Stormwater Management Program 10.0 SOURCE CONT''OL F• . EXIST! G DEVELOP E T In 2025, the City will continue to fully implement our Permit -required Source Control Program to prevent and reduce contamination discharging into the MS4 from stormwater pollution - generating sites and businesses in Tukwila. Elements of the Source Control Program include: • Developing an inventory that includes approximately 156 privately owned institutional, commercial, and industrial sites which have the potential to generate pollutants to the MS4 and local surface waters. • Performing annual inspections on a minimum of 20% of the total inventory sites (779). • Establishing effective BMPs for each individual site to control pollution potentially discharging into the MS4 utilizing the KC Surface Water Pollution Prevention manual. • Implementing a progressive enforcement program that requires sites to comply within a reasonable period and ensuring they have the technical assistance to comply. • Providing ongoing staff training for those responsible for implementing the source control program and providing escalating enforcement to businesses slow to implement BMPs up to and including fines and cost -recovery for actions the Municipality must conduct. To help continue the implementation of the new program, stormwater personnel participate in the Business Inspection Group (BIG), a collaborative group of municipal stormwater permittees hosted by the Washington Stormwater Center. BIG periodically convenes to share resources and guidance on best practices, enforcement strategies, public education, and inspection tracking and management. 11.0 ONITORING AND ASSESS ENT The Department of Ecology -facilitated Stormwater Action Monitoring (SAM) forum helps municipal stormwater permittees understand and develop water quality monitoring strategies required under Western Washington municipal stormwater permits. SAM provides structure, transparency, and accountability for permittees and stakeholders. The group also aims to improve stormwater management, reduce pollution, improve water quality, and reduce flooding. The City of Tukwila meets Permit monitoring and assessment requirements by paying into an Ecology -managed collective fund that finances the following programs: S8.A — Regional Status and Trends Monitoring, the City has paid $3,252. S8.B —Effectiveness and Source Identification Studies, the City has paid $5,943. The total fee of $9,195 is due each year by August 15 until the permit expiration date of July 31, 2029. This amount may be adjusted in the future depending on the growth in Tukwila according to the total housing units available each year. 12.0 EPORTI GREQUIREMENTS (SPECIAL CONDITION S9) 12.1 Annual Report No later than March 31 of each year, the City of Tukwila submits an electronic Annual Report to Ecology's Water Quality Permitting Portal (WQWebPortal). The Annual Report covers activities performed during the previous calendar year. Each Annual Report includes the following: 19IPa 2025 Stormwater Management Program • A copy of Tukwila's current SWMP Plan. • As provided by Ecology, the Annual Report form documents SWMP Plan implementation status during the reporting period. • Attachments including summaries, descriptions, reports, and other information as applicable. • Certification and signature pursuant to G19.D, and notification of any changes to authorization pursuant to G19.C. The City makes the most current Annual Report and SWMP Plan available on the Tukwila Stormwater Management Program Webpage by the required date of May 31st 12.1 Annual Report The City of Tukwila keeps all records related to the Permit and the SWMP for at least five years. All records related to the Permit and the SWMP are made available to the public at reasonable times during business hours. The City will provide a copy of the most recent Annual Report upon request to any individual or entity (a reasonable cost is charged for making photocopies of records). The City may require an advanced notice of intent to review Permit -related records. For your convenience and due to the stark difference between the Annual Report contained in Appendix 3 and the online SAW Account required by the Department of Ecology, the full Appendix 3 Annual Report version is attached here as Appendix E. CO CLUSION The current Permit expires July 31, 2029. This SWMP Plan is a working document with updates annually until the expiration date. The City will be developing many policies, programs and procedures to meet the new permit requirements in the next few years to retain coverage under the National Pollution Discharge Elimination System and the accompanying State Waste Discharge permit. Complete information on the City's NPDES program can be found online at: https://www.tukwilawa.gov/departments/public-works/npdes/. Many thanks to the Interdepartmental Team (listed below), our Watershed Partners and the supporting community. The public is encouraged to participate in the development of the SWMP Plan. Please contact Russell Betteridge of the City of Tukwila's Public Works Department with questions or comments at: Mail: Russell Betteridge, CSM NPDES Coordinator Department of Public Works, City of Tukwila 6300 Southcenter Blvd, Suite 200 Tukwila, WA 98188-8548 Email: SWMP(a�tukwilawa.gov Website: https://www.tukwilawa.gov/departments/public-works/npdes/ 20 Pa g 202GStunmvvaterManagement Program Interdepartmental Team Members and Associates involved in the preparation and implementation of this Plan: Mike PerhetU.Surface Water Program Manager Heidi \8Auttera. Urban Environmentalist Eric Pritchard, CODStnuCtiOO |OSp6CtO[ Matt Austin, P8[hS K48iOt8D8DCR GUpe[iOt9Dd8Dt Ryan Rosevear, Golf Maintenance Superintendent Bryan Still, Operations Manager Associates: Nancy EcWund.Senior Long -Range Planner Cheri Du' Permit Plan Review Engineer Pat Bradley, Storm and Sewer Superintendent Roy Busch, 8ionn/NPC)E8Crew Lead Shawn Hall, Environmental Compliance Inspector J8beSC)tienO, Environmental Compliance Inspector Jake Enzminger, Field G|G7-eChniCi8n A 2024-29 NPIDES New Permit Requirement Summary B Administrative Order S0O-OO C Capital Improvement Program 2025-2030 (412 Fund) D Catch Basin Alternative Inspection Protocol E Troininq Plan F Adopt A Spot and Green Tukwila Annual Report 21|Page Appendix A 2024-29 NPDES New Permit Requirement Summary New State Requirements contained in'24-'29 Permit S5.C1 Stormwater Planning March 31, 2027 - S5.C.1.d.i No later than March 31, 2027, complete a SMAP for at least one new high priority catchment area, or additional actions for an existing SMAP. The purpose of the SMAP is to support implementation in the SMED program with the identification of strategic investments through the identification of projects and actions. December 31, 2028 - S5.C.1cii Adopt and implement tree canopy goals and policies to support stormwater management. S5.C2 Public Education and Outreach July 1, 2025 - S5C.2.a._.b Based on the recommendation from the 2024 evaluate and report, follow social marketing practices and methods and develop a campaign that is tailored to the community, including development of a program evaluation plan. September 1, 2025 - S5.C.2.a.ii.c Begin to implement the strategy developed in C.2.a.ii.b. S5.C3 Public Involvement and Participation December 31, 2026-S5.C.3.a.ii Document methods used to identify overburdened communities. S5.C4 MS4 Mapping and Documentation March 31, 2026 - S5.C.4.b.i Submit locations of all known MS4 outfalls according to the standard templates and format provided in the Annual Report. This reporting shall include the size and material of the outfalls. December 31, 2026 - S5.C.4.b.ii Using available, existing data, map tree canopy to support stormwater management on Permittee-owned or operated properties. Develop and follow a methodology to intentionally identify canopy for stormwater management purposes, which may be updated annually or as needed. December 31, 2028 - S5.C.4.b.iii Implement a methodology to map and assess acreage of MS4 tributary basins to outfalls with a 24-inch nominal diameter or larger, or an equivalent cross -sectional area for non -pipe systems that have stormwater treatment and flow controls BMPs/facilities owned or operated by the Permittee. Submit with the Annual Report a map and breakdown of acres managed or unmanaged by stormwater treatment and flow control BMPs/facilities. S5.C.4.b.iv Using available, existing data map overburdened communities in relation to stormwater treatment and flow control BMPs/facilities, outfalls, discharge points, and tree canopy on Permittee-owned or operated properties. S5.C5 Illicit Discharge Detection and Elimination New State Requirements contained in'24-'29 Permit July 2, 2027 — S5.C5.c Each Permittee shall implement an ordinance or other regulatory mechanism to effectively prohibit non-stormwater, illicit discharges into the Permittee's MS4 to the maximum extent allowable under state and federal law. The ordinance or other regulatory mechanism in effect as of the effective date of this Permit shall be revised, if necessary, to meet the requirements of this Section no later than July 1, 2027. S5.C6 Controlling Runoff from New Development, Redevelopment and Construction June 30, 2027 - Appendix 10 Identifies the exemptions, definitions related to the Minimum Requirements, applicability of the Minimum Requirements that need to be included in the ECY-equivalent stormwater management manual. S5.C7 Stormwater Management for Existing Development March 31, 2028 - S5.C.7.b With each annual report, provide a list of planned individual projects scheduled for funding or implementation during the Permit term for the purpose of meeting the assigned equivalent acreage in Appendix 12 using the formatting specified in Appendix 12. March 31, 2028 - S5.C.7.c Fully fund, start construction, or completely implement projects(s) that meet the Permittee's equivalent acreage and submit documentation with the Annual Report. March 31, 2028 - S5.C.7.e Report the amount of estimated or projected equivalent acres managed by stormwater facility retrofits for the 2029-2034 Permit term. S5.C8 Source Control Program for Existing Development August 1, 2027 - S5.C.8.a Update and make effective the ordinances(s) or other enforceable documents, as necessary to meet S5.C.8. S5.C9 Operations and Maintenance March 31, 2028 - S5.C.9.e.v Document and report: (a) mapped priority areas swept, (b) sweeping dates, (c) sweeping frequency, (d) type of sweeper, (e) total curb miles of priority areas and curb miles swept, and (f) approximation of street waste removed for each sweeping event. June 30, 2027 - S5.C.9.a Implement maintenance standards that are as protective of facility function as specified in the SWMMWW or an Ecology -approved Phase I program. Update maintenance standards as necessary. December 31, 2027 - S5.C.9.x.v.a Document policies, practices, or procedures to reduce stormwater impacts associated with runoff from all lands owned or operated by the Permittee including: Source control BMPs to minimize PCBs from entering the MS4. The Permittee shall not discharge washdown water to the MS4 for buildings suspected of having PCB -containing materials. New State Requirements contained in'24-'29 Permit December 31, 2027 - S5.C.9.xvi.a Update policies, practices, or procedures to include source control BMPs for building materials to prevent PCBs from entering the MS4 in preparation for and during demolition and renovations. July 1, 2027 - S5.C.9.e.i Apply a street sweeping program to Permittee owned roads in high priority MS4 drainage areas discharging to outfalls and meet any of the following criteria (a) high traffic streets, such as arterials or collectors, (b) Streets that serve commercial or industrial land use areas. July 1, 2027 - S5.C.9.e.ii Sweep high priority areas at least once between July and September each year and two additional times a year as determined by the Permittee to provide additional water quality benefits. For calendar year 2027, only one sweeping event is required. July 1, 2027 - S5.C.9.e.ii.a Annually sweep, and document, at least 90% of high priority areas each sweeping event. July 1, 2027 - S5.C.9.e.iii. Follow equipment design performance specifications to ensure that street sweeping equipment is operated at the proper design speed with appropriate verification, and that it is property maintained. There are many other Appendices to the permit that include many other requirements stacked on the requirements listed above. Our Interdepartmental Team will be assessing and addressing these extended requirements and expectations to be certain that all conditions are addressed. Appendix B Administrative Order 900-08 CITY OF TUKWILA ADMINISTRATIVE MANUAL Index: 900-08 Page 1 of 3 NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM regarding implementation of interdepartmental coordination PURPOSE: To establish and implement a procedure for the interdepartmental coordination regarding the City's compliance with the National Pollutant Discharge Elimination System REFERENCES: NPDES Western Washington Phase II Municipal Stormwater Permit TMC 14.30 Surface Water Management TMC 14.31 Illicit Discharge Detection and Elimination STATEMENT OF POLICY: City departments are required to coordinate internally to ensure that all aspects and elements of the NPDES program are being fulfilled. DEFINITIONS: City: means the city of Tukwila. Coordinator: means the City's Public Works Director, or designee. Department: means any City of Tukwila department or division that engages in activities or programs that are subject the NPDES permit. Liaison: means the designee of any Department that is responsible for ensuring the department's compliance with the NPDES permit. NPDES: means National Pollutant Discharge Elimination System. POLICY: Section A: The City operates under the NPDES through a municipal stormwater permit issued by the Washington State Department of Ecology. To ensure that the City is fully complying with the NPDES permit, each department in the City is responsible for implementing applicable compliance activities. This policy is established to ensure that each City department coordinates with other City departments in order to assure compliance with the NPDES permit requirements as follows: 1. The City's Public Works Department shall be responsible for coordinating the City's municipal permit compliance activities. 2. The following departments have been deter lined by the Coordinator to have activities that are regulated the NPDES permit: a. Public Works Engineering Index: 400-03 NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM regarding implementation of interdepartmental coordination Page 2 of 3 b. Public Works General Operations and c. Public Works Utilities Maintenance d. Parks & Recreation e. Department of Community Development f. Fire Department g. City Attorney's Office 3. Departments engaging in any activities or programs subject to or could support compliance with applicable municipal permit requirements. 4. Each department subject to the municipal department's municipal permit requirements and 5. Coordination framework and expectations: a. Liaisons shall be familiar with municipal department. b. The Coordinator and Liaisons shall develop applicable municipal peimuit requirements. c. The Coordinator and Liaisons shall work requirement activities. d. Liaisons shall communicate regularly with compliance activities. e. The Coordinator and Liaisons shall prepare with municipal permit requirements. Submittals reports, stormwater management program submittals as required by Ecology. f. Upon request from the Coordinator, Liaisons department -specific compliance activities Section B: The following chart demonstrates the current Maintenance (inc. Streets, Fleet & Facilities) that the Coordinator determines may be the municipal peiliiit is required to comply with permit shall designate a Liaison to manage that coordinate as appropriate with the Coordinator. permit requirements that are applicable to their city-wide protocols to ensure compliance with together to implement any municipal permit the Coordinator on the status of applicable and provide submittals to Ecology to comply include, but are not limited to, annual (SWMP) plans, compliance reports and other shall provide information regarding in a timely manner. list of key City departments and the corresponding municipal permit component: Departments Permit Requirements Public Works Engineering Si, S2, S3, S4, S5, S7, S8, S9 Public Works General Operations and Maintenance (Streets, Fleet & Facilities) S5.C.4, S5.C.5, S5.C.7, S5.C.8, Appendix 6 Public Works Utilities Maintenance (Water, Sewer & Surface Water) S5.C.4, S5.C.5, S5.C.7, S5.C.8, Appendix 6 Index: 400-03 NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM regarding implementation of interdepartmental coordination Page 3 of 3 Parks & Recreation S5.C.5, S5.C.5.6, S5.C.7 Foster Golf Links S5.C.5, S5.C.5.6, S5.C.7 Department of Community Development S5.C.5, S5.C.6 Fire Department S5.C.5, S5.C.6 Title: NPDES POLICY Initiating Department: Public Works Approved by City Attorney's Office Emily Miner, Assistant City Attorney Effective Date: April 7, 2022 Supersedes: City Administrator ) David Cline, City Administrator This policy is available on the Public Works website. Appendix C Capital Improvement Plan 412 Fund excerpt 2025 - 2026 Biennial Budget City of Tukwila, Washington City of Tukwila Capital Improvement Program 2025-2030 Excerpted 412 fund Only 329 2025 - 2026 Biennial Budget City of Tukwila, Washington ADOPTED 2025 - 2030 CAPITAL IMPROVEMENT PROGRAM TABLE OF CONTENTS Page Introduction 331 Policy Framework 333 Financing Strategy 334 Project Highlights 339 Notes to Enterprise Funds 341 Project Details Sheets 351 General Government Special Projects 000 Fund....................................................................... 352 Residential Streets 103 Fund....................................................................... 355 Bridges/Arterial Streets 104 Fund....................................................................... 360 Parks & Trails 301 Fund....................................................................... 388 General Improvements 303 Fund.......................................................................412 City Facilities 306 Fund.......................................................................426 Enterprise Funds Water Projects 401 Fund....................................................................... 429 Sewer Projects 402 Fund....................................................................... 441 Golf Course 411 Fund.......................................................................454 Surface Water 412 Fund.......................................................................465 330 2025 - 2026 Biennial Budget City of Tukwila, Washington City of Tukwila Capital Improvement Program Overview 1 TR S UCTI Providing infrastructure is a primary function of a local government. Maintaining public safety, city services, parks and recreation facilities, and the community's quality of life are heavily dependent on how the City plans for future infrastructure needs. The Capital Improvement Program (CIP) is a comprehensive multi -year plan of proposed capital projects that will support the continued growth and development of the City. It represents the City's plan for physical development and it intended to identify, and balance the needs, within the financial capabilities and limitations of the City. The plan is reviewed and updated every two years to reflect changing priorities and provides an ongoing framework for identifying capital needs, scheduling projects over a period of time, coordinating related projects, and identifying future fiscal impacts. The Capital Improvement Program: • Is characterized by a six -year plan document • Is a funding plan, rather than a spending plan • Denotes funding sources that are being planned for projects, based on preliminary, rough order of magnitude cost estimates. A large portion of the CIP focuses on the much -needed work to maintain and renew existing infrastructure and amenities around Tukwila to keep them in safe and serviceable condition. The remainder of the capital program is investments in new and expanded infrastructure and amenities to serve a changing population and growing economy. Generally, the CIP includes projects that are relatively expensive, have a multi -year useful life, and result in capital assets. These include the additions to or renovations of existing streets, buildings, parks and trails, technology, infrastructure for utilities, and land purchases. However, the CIP can also include projects that do not result in a capital asset upon completion but are associated with significant maintenance and repair of existing capital assets. An example of this would be street overlay, in which the City typically expends in excess of $1 million annually on overlay projects but does not result in a new capital asset or an improvement to an existing capital asset. The City of Tukwila's 6-Year CIP (2025-2030) reflects an investment of $297,931,000, and the two year (2025-26) adopted capital budget reflects approved expenditures in the amount of $81,994,000. Due to the nature and total costs of the projects identified in the CIP, the City will most often fund these projects with dedicated revenue sources including grants, impact fees, bond proceeds, and taxes externally restricted to certain types of projects. In some limited circumstances and when there are insufficient dedicated revenue sources, projects may be funded with general fund dollars. The CIP process is intended to identify the funding sources available for projects prioritized in the next six years. The first two years of the CIP is the basis for actual appropriations authorized by the City Council for projects when adopting the biennial budget. The remaining four years are a guide for future funding requirements to complete current projects as well as a guide for future planned projects. The projects reflected in the out years (years four through six) reflect projects the City believes is has the financial ability to fund within that time frame. The out years of the plan reflect projects that are important to the community, however, if funding capabilities are not realized, then the projects will necessarily be pushed further out. 331 2025 - 2026 Biennial Budget City of Tukwila, Washington The overall CIP schedule is formulated to reflect the City's priorities and needs, by taking into consideration the City's goals and policies, various master and strategic plans, the urgency of a project, the potential for future project funding, and ongoing operational requirements. The CIP is a dynamic process, with anticipated projects being changed, added, and deleted from the plan as the six - year timeline moves forward. The purpose of the CIP is to systematically identify, plan, schedule, finance, track, and monitor capital projects. Most capital projects are included in the CIP, rather than the operating budget, except for equipment purchases for the general fund. The objectives used to develop the CIP include the following: • Preserve and improve basic infrastructure of the City through construction and rehabilitation. • Maximize the useful life of capital investments by scheduling renovations and modifications at the appropriate time in the life cycle of the asset. • Identify and examine current and future infrastructure needs and establish priorities among projects so that available resources are used to the community's best advantage. • Improve the financial planning by comparing needs with resources, estimating future needs, and identifying future implications. Major changes in the development of the 2025-26 CIP include: • Consolidated Operating and Capital Budget: The CIP has previously been adopted by resolution separate from but aligned with the biennial budget. A separate document, Financial Planning Model and Capital Improvement Program, was produced providing a summary of capital projects along with detailed project sheets organized by project type. The 2025-26 Biennial Budget reflects a consolidation of the CIP and the Operating Budget into a single streamlined document. The previous documents unnecessarily duplicated much of the same information. This consolidation supports improved long-term financial planning, as both operating and capital costs are now viewed together, providing a clearer picture of the City's overall fiscal health and priorities. The core elements of the CIP—such as expenditure and revenue projections, policy context, detailed project narratives, and summary analysis —remain, ensuring that all critical information is still easily accessible. • Dissolving Select Fund Structures and Transferring Funds: Fund 302 Urban Renewal Fund is recommended to be dissolved. The projected year-end fund balance of $1,917,220 will be transferred to the City's General Fund. Upon adoption of the 2025-26 operating and capital budget ordinance, the City Council accepts the Six Year Capital Improvement Program, representing the City's commitment to the plan but does not in itself authorize expenditures except as noted in City policy. For capital projects in the approved CIP, the Mayor may approve contracts up to $99,999. For projects in excess of this amount and all other purchases above $60,000 requires City Council approval. 332 P 0 � K The CIP is informed by a series of independent but coordinated planning documents and policies (see Appendix X), * Resolution 2D96'Financial Policies * Resolution 2U87'Procurement Policies ° Resolution 184O'City ofTukwila Debt Policy � Resolution 2O98'Transportation Improvement Plan (T|P) � City ofTukwila Comprehensive Plan (2024'2U3U) ^ City of Tukwila Comprehensive Water Plan- 2015 (update slated for adoption Q4 2024) * City ofTukwila Surface Water Comprehensive Plan- 2024Update * City of Tukwila Comprehensive Sanitary Sewer Plan -2013 (update slated for adoption Q4 2024) � City of Tukwila Parks. Recreation and Open Space (PROSI Plan- 2020 (to be updated in 2025-26) � Resolution 1S0S'Green Tukwila 20Year Stewardship PiuIl(2017) ° Str n(2[C24) ° Economic Strategy (2023) * ADATransition Plan (2U17) * City Strate&Jqsml(201-2) * Urban Tree Canopy 8useoannent(2012) * Facilities Needs Assessment and Feasibility Studies o Phase L5paceNeeds Analysis (2014) o Phase 2Facilities Assessment (2014) o Phase 3Evaluation nfAlternatives (2014) o PhoSvEe 4 Fundini!and Financing Options (2015) ° Tukwila Teen & Senior Center Prnjeuat-2022) CAPITAL G ST ATEGY Consistent with established financial and debt service policies, CIP funding for the next two years relies on existing, available fund balances and projected revenues from Real Estate Excise Tax (REET), Impact Fees, Utility Rates, bond proceeds, state and federal grants, loans and other sources. These revenues are usually dedicated to capital purposes and are not available to support operating costs. Most revenues for capital projects come with restrictions. Utility rates may only be used for projects of the respective utility; REET 1 and 2 is reserved for capital projects to help develop a community's public infrastructure (e.g., parks, open space, and streets). The City's capital financing strategy has been to use these restricted revenues on a "pay as you go" basis for needed improvements. While City Financial Policies discourage reliance on General Fund support for funding of capital projects, General Fund project transfers are made to support certain capital and governmental projects. The contribution required is based on the financial status of the project fund (such as the Arterial Street Fund, the Land/Parks Acquisition Fund, etc.), the amount of dedicated revenues received into the fund, the amount of specific funding sources such as grants and the amount of the existing fund balance. The following table provides an overview of the CIP financing strategy: Capital Improvement Program Financing REET 1 REET 2 General Purpose Revenues Utilities ImpactFees Grants Purpose Planning, acquisition, construction, reconstruction, repair, replacement, rehabilitation, improvement Nanning, acquisition, construction, reconstruction, repair, replacement, rehabilitation, or improvement of Varies Operating, managing, maintaining, erecting, acquiring One-time charges assessed by a local government against a new development project to help pay for new or expanded public facilities that will directly address the increased demand for services created by that development. Varies Eligible Activities/Projects Streets; roads; highways; sidewalks; street and road lighting systems; traffic signals; bridges; domestic water systems; storm and sanitary sewer systems; parks; recreational facilities; law enforcement facilities; fire protection facilities; trails; libraries; administrative facilities; judicial facilities; river flood control projects; waterway flood control projects Streets, roads, highways, sidewalks, street and road lighting systems, traffic signals, bridges, domestic water systems, storm and sanitary sewer systems Flexible purposes Water- waterworks, • Public streets and roads • Publicly owned parks, open space, and recreation facilities • School facilities • Fire protection facilities Non -repayable funds sometimes requiring a local match (money; in -kind services; materials; equipment; labor, etc.) storing/retaining water, erecting aqueducts, pipe lines, dams or waterworks, protection of water suppy from pollution, etc. Sewer- related to sanitary or combination of sewers, pumping stations, disposal plants, water mains, hydrants, reservoirs or appertenances• Stormwater water supply, water quality, water resource and habitat protection & management Tukwila Financing Strategy Parks Construction Maintenance Open Space Property Acquisition Planning Improvements Public Buildings Repair Maintenance Planning & Design Bridges &Streets Construction Maintenance Equipment Vehicle Replacement Technology Computers Software Communications Bridges & Streets Construction Maintenance Sanitary Sewer Construction Maintenance Storm Water Construction Maintenance Water Construction Maintenance Parks System improvements Fire System improvements Transportation System improvements Parks Construction Maintenance Open Space Property Acquisition Planning Improvements Public Buildings Repair Maintenance Planning & Design Streets Construction Maintenance Sanitary Sewer Construction Maintenance Storm Water Construction Maintenance Water Construction Maintenance Capital Improvement Program by Fund F3 Surface Water $21,074 26% Special Projects $1,110 Water $6,615 8% $81.9 MILLION Arterial Streets $16,019 20% 111 P1111111PIY177711 Residential Street $7,544 City Facilities $3,556 ' 4% Parks &Trails $10,631 13% 01111111111 j111, IIIIIIIIIIIIIIIII II IIIIIIIIIIIIIIII IIIIIIIII Golf Course $1,435 2% New Facilities $1,975 20/0 Capital Outlay in_the Operating Budget In addition to the CIP, the City funds an equipment replacement internal service fund for vehicles owned and operated by the City. Funds and departments that utilize the equipment transfer funds to the internal service fund to purchase and replacement of the vehicles. The City also funds equipment for general fund departments out of general fund tax dollars. Capital outlay in the general fund includes technology, exercise equipment, and department specific equipment. Impact on the Operating Budget The City's operating budget is directly affected by the CIP. When certain types of capital projects are developed and completed, they also have ongoing financial impacts. For example, if the City were to construct a new park, the operating budget would either increase to accommodate additional staffing and supplies or existing staffing and supplies would remain at the same level but be required to be spread across more parks. Project Accounting Capital Improvement Projects are categorized within the following Funds and adopted on a multi -year basis: Government Funds • Fund 000 Special Projects: New to the 2025-2030 CIP, this includes projects that don't meet traditional definition of a single fund. In the 2025-26 biennium, Special Projects will support World Cup preparations as well as Tukwita's first -ever People's Project, a participatory budgeting initiative that allows residents to have a direct say in a capital improvement for their community. • Fund 103 Residential Streets: Established in accordance with RCW 35A.37.010 to account for maintenance and improvement of the City's residential streets. Major sources of support are the State - levied tax on motor vehicle fuels distributed to Tukwila to be used for City street purposes, state and federal grants, and transfers in from the General Fund. • Fund 104 Bridges and Arterial Streets: was established in accordance with RCW 82.36.020 for the administration of the State -levied motor vehicle half -cent gasoline tax distributed to Tukwila and is used primarily to account for capital arterial street projects. In addition to the State -levied motor vehicte gasoline tax, other revenue includes state and federal grants, impact fees, and transfers in from the general fund. • Fund 301 Land Acquisition, Recreation, and Park Development: Accounts for the acquisition of land, development of land, and construction of park facilities. • Fund 302 Urban Renewal: Established in 1988, this fund accounts for costs associated with property owned by the City that will be utilized for redevelopment or renewal purposes. This fund will be dissolved and its fund balance transferred to the General Fund. • Fund 303 City Facilities: This fund was established in 1992 to provide funding for minor capital improvements not related to parks, land acquisition, or major building replacements. • Fund 304 Fire Improvements: This fund is to be used for the acquisition of land, development of land and construction of fire facilities. Revenue for this fund comes primarily from fire impact fees. • Fund 305 Public Safety: The Public Safety Plan fund was established in 2016 after voters approved a $77.4 million bond measure to construct a justice center, rebuild 3 fire stations, and provide for life -cycle replacement of fire department apparatus and equipment. • Fund 306 New Facilities: was established in 2016 to account for costs of building a new Public Works Shop facility. The public works shop facility is part of the City's public safety plan but is not included in the voter - approved bonds. The City issued bonds in 2021 for the general fund portion of the phase 1 improvements associated with the Public Works Shop project. The Tukwila Parks and Recreation Department is currently in discussions with a local non-profit concerning the construction, staffing, and potential programmatic offerings to be provided by a future proposed mixed -used health center and recreational facility. Proprietary Funds • Fund 401 Water Utility Fund accounts for operations and capital improvements to provide water services to the City. • Fund 402 Sewer Utility Fund accounts for operations and capital improvements to provide sanitary sewer services to the City. • Fund 412 Surface Water Utility Fund accounts for the operations and capital improvements for the City's storm drainage and surface water management function • Fund 411 Foster Golf Course Fund is used to account for the operation, maintenance, and improvements of the municipal golf course facility and its associated equipment. The 2025-30 CIP provides an implementation schedule for each of the projects that provides for: • Coordination and timing of project construction/acquisition among other competing needs • Estimate of each project's costs • Estimated timeline for completing of the project • Anticipated sources of revenue for financing the project • Estimate of the impact on each project on ongoing operating expenditures, where possible Operating impact information has been forecasted, where possible, from the scheduled completion date of the project. The CIP attempts to meet the highest priority needs of the community. It will be continually evaluated in the future to ensure that it is consistent with the priorities of the City Council, with financial policies, and the available resources of the City. The major items in the CIP are categorized by type of project, then itemized by project title, year, and cost on the summary sheets of the CIP document. The project detail sheets for individual projects anticipated within the next six years of the program follow the summary sheets.. The types of projects included in the CIP are categorized and associated with a designated Fund that groups similar projects for tracking revenues and expenditures: The total CIP budget for the six -year CIP is as follows: Summary of Capital Improvement Program Projects in the 2025-2030 CIP Project Type (costs in thousands) 2025 2026 2027 2°28 2029 2030 Total Arterial Streets City Facilities Golf Course New Facilities Parks & Trails Residential Streets Sewer Special Projects Surface Water Water Grand Total $6,660 $2,981 $615 $1,075 $4,137 $1,239 $6,770 $305 $10,473 $3,750 $38,005 59,359 $575 $820 $900 $6,494 $6,305 $5,265 $805 $10,601 $2,865 $43,989 $49,360 $1,375 $3,739 $0 $6,947 $5,143 $5,665 $55 $18,670 $1,780 $92,734 $21,273 $774 $345 $0 $7,171 $770 $3,170 $55 $9,848 $5,300 S48,706 $6,550 $6,610 599,812 $290 $155 $6,150 $351 $357 $6,227 $0 $0 $1,825 $3,237 $2,746 $30,732 $3,885 $765 $18,107 $3,265 $3,565 $27,700 $55 $55 $1,330 $5,523 $9,253 $64,368 $13,610 $14,225 $41,530 $36,766 $37,731 $297,931 CAPITAL PROJECT HIGHLIGHTS CIP Projects by Biennial Expenses (2025-2026) Below are the significant new elements of the 2025-2030 Capital Improvement Program. Residential Streets Residential street improvements in the 2025- 2026 CIP include several key projects aimed at enhancing pedestrian and cyclist safety, as well as general street improvements. Notable projects include the South 152nd Street Pedestrian and Bike Improvements, which focus on creating a safer route for students walking to nearby schools, and the 46th Avenue South Safe Routes to School Project, which will enhance safety for students. Additionally, the City remains committed to ongoing neighborhood traffic calming efforts through the Traffic Calming/Residential Safety Improvements Program, maintaining funding levels following the loss of ARPA funding. Bridges The 42nd Avenue South Bridge Replacement, the bridge next to the Tukwila Community Center, will be a major focus in the next biennium. The project has been delayed but will begin construction in early 2027. Arterial Streets The 2025-2026 CIP includes significant improvements to Tukwila's arterial streets, with a focus on enhancing safety, accessibility, and infrastructure resilience. A key highlight is that the City has secured grant funding for three major overlay projects: Boeing Access Road Overlay, Orittia Road South Overlay, and Interurban Avenue South Overlay. These overlays will ensure that these critical roadways remain in good condition and are able to support increased traffic volumes, with minimal impact on local funds. In addition to these grant -funded projects, the South Ryan Way improvements will provide vital upgrades to one of Tukwila's busiest corridors, while the Southcenter Boulevard/65th Avenue South Signal project will enhance traffic flow and safety at a key intersection. The Annual Overlay and Repair Program will continue to maintain the overall integrity of arterial streets, focusing on resurfacing and repairing roadways before significant deterioration occurs. By leveraging state and federal grants, the City is able to pursue these critical improvements with substantial external funding support, maximizing the value of local dollars. a�e�bwsevwi+twrrrw��arY1uA Y1C* f' AP1I5F'JA RM R• EtnS:.a Parks & Recreation The 2025-2030 Capital Improvement Program for the City of Tukwila Parks system will include both long-term strategic planning and physical asset investment. A new Parks, Recreation, and Open Space (PROS) Plan will be finalized by Q1 of 2026. Additionally, the 2025-2030 CIP includes the execution of Master Plan projects for the Tukwila Community Center, S 116th Street Parcel, Joseph Foster Memorial Park, and Crestview Park. Improvements and repairs are also planned at Riverton and Crystal Springs Parks, including playground replacements. Parks and Recreation staff continue to research and seek funding sources to support execution of these projects. Facilities The 2025-2026 CIP includes key upgrades to City facilities and significant Public Works projects that are essential to Tukwila's infrastructure and community services. However, funding for these facilities has historically been Limited, and some major projects currently do not have secure funding moving forward. For City Facilities (Fund 303), essential projects such as the Tukwila Community Center (TCC) HVAC Replacement Phase 2 will improve energy efficiency and enhance the overall functionality of the building. The City Facilities Furnishings, Fixtures, and Electrical Enhancements project will ensure that city buildings are equipped with modern, functional furnishings and equipment. Additionally, the City Hall Roof Replacement and Pedestrian Bridges Maintenance are critical for maintaining the safety and longevity of city assets. In Fund 306, two significant projects face challenges due to the lack of established funding moving forward. The first is the Intergenerationat Teen and Senior Center, a facility aimed at providing recreational and community space for both teens and seniors, fostering engagement across generations. White this project remains a priority for the City, securing future funding will be essential to its progress. Similarly, the Public Works Consolidated Shops project is part of a long-term effort to modernize public safety and operations facilities. This project will streamline operations for Tukwila's engineering, utility, and street services, but like the Teen and Senior Center, it currently lacks a funding plan for its next phases for which new debt service would need to be issued. These projects are critical to Tukwila's future, but the limited availability of funds for facility improvements continues to present challenges. The City will need to explore alternative and additional funding sources and partnerships to advance these projects in the coming years. Water The capital component of the Water Enterprise Fund focuses on critical infrastructure improvements needed to support the City's water distribution system. The key project in the 2025-2026 biennium is the Tukwila Water Reservoir, which is vital for ensuring the City has sufficient water storage capacity to meet current and future demand. This project is also necessary to maintain water pressure and supply in the event of system disruptions or emergencies. In addition to the reservoir, the Fund supports ongoing infrastructure enhancements such as water main replacements and improvements to ensure the system's reliability and longevity. These projects are essential for meeting the City's growth targets and maintaining compliance with water quality standards. The City's strategy includes phased capital investments to avoid system failures and reduce the need for costly emergency repairs. Sewer The Sewer Enterprise Fund capital component for 2025-2026 includes critical projects such as the Sewer Lift Station 12 Retrofit, the Sewer Lift Station 5 Rebuild, and the Southcenter Blvd Sewer, to increase capacity and system reliability. The Annual Sewer Repair Program will address ongoing maintenance and system improvements, while the Ryan Hill Sewer Revitalization focuses on upgrading failing septic systems. These projects ensure the City's sewer infrastructure meets current and future demands. Surface Water The Surface Water Enterprise Fund supports the City's stormwater management efforts, ensuring compliance with federal, state, and local regulations such as the National Pollution Discharge Elimination System (NPDES) permit. The 2025-2026 CIP focuses on several critical drainage and water quality projects, including the S 131st Place Drainage Improvements, the Gilliam Creek Fish Barrier Removal and Habitat Enhancement, and the Chinook Wind Extension. These projects aim to improve stormwater management, reduce flooding, and enhance the ecological health of Tukwila's water bodies. OTES T E TE`P ISE FU S The City of Tukwila's Enterprise Funds account for utility and service operations that are self -sustained through user charges, operating similarly to private businesses. These funds include the Water, Sewer, Surface Water, and Golf Funds, each responsible for financing its operations, capital improvements, maintenance, and debt service obligations. The following notes provide detailed information regarding the rate structures, major capital projects, debt service schedules, and operational updates for the 2025-2030 period. These notes also cover reserve fund policies and interfund utility taxes that impact the financial performance of each fund. Rates are regularly reviewed to ensure they support ongoing operations and necessary capital improvements while adhering to Federal, State, and local regulations. Throughout 2023 and 2024, FCS Group conducted a comprehensive utility rate study to ensure the fiscal sustainability of the enterprise funds. The reflected rate increases in the 2025-2030 CIP are a result of this study. However, it is important to note that these increases do not account for the additional revenue requirements needed to fund debt service associated with Public Works Shops Phase II. Should that project move forward, rates would need to be further adjusted to meet the corresponding financial obligations. Key Highlights: Water Enterprise Fund: Significant rate increases (9% annually from 2025-2029 and 5% in 2030) are planned to maintain reserves, fund key infrastructure projects (e.g., the construction of a new water reservoir), and cover potential cost increases from the Cascade Water Alliance (CWA). Additionally, the fund's debt service obligations include Public Works Trust Fund loans and bonds related to past infrastructure projects. Sewer Enterprise Fund: The Sewer Fund is impacted by both Tukwila's sewer rate adjustments and King County Metro sewer fees, which are passed directly to ratepayers. Capital projects such as the Sewer Lift Station 12 Retrofit and the Ryan Hill Sewer Revitalization are critical components of the 2025-2026 CIP. This fund also manages debt service obligations, including loans and bonds from previous infrastructure projects. Additionally, sewer connection fees are being collected for major projects like those in the Allentown/Foster Point area. Surface Water Enterprise Fund: Surface water management is a primary focus of this fund, driven by the need for compliance with the National Pollutant Discharge Elimination System (NPDES) permit. Capital improvements for drainage and water quality, such as the S 131 st Place Drainage Improvements and the Gilliam Creek Fish Barrier Removal, are key elements of the 2025-2026 capital plan. The fund also leverages grant funding from agencies like the Department of Ecoogy and the King County Flood Control District to supplement ratepayer contributions. Golf Enterprise Fund: Supported by green fees, merchandise sales, and contributions from the General Fund, the Golf Fund aims to operate on a break-even basis. While other enterprise funds serve essential utility services, the Golf Fund operates differently, relying on voluntary users. The fund's capital investments are focused on maintaining and enhancing the municipal golf facility, including debt service for prior improvements. Fund Cost in Thousands (000s) JL Key Project Name 91641204 92341202 82541201 91641203 91341203 99830105 91241202 82541202 1241203 I 1 99341210 72541203 92541203 8254120 92241203 S 131 st Pt Drainage Improvements Chinook Wind Extension Annual Small Drainage Program Nelsen Side Channel Levee Program Gilliam Creek Fish Barrier Removal and Habitat Enhancement Storrnwater Water Quality Retrofit Program Gilliam Creek Erosion Repair Tukwila Urban Center Conveyance Inspections NPDES Program Lower Green Riverfront Master Plan S. 104th St Shoreline Restoration Riverton Stormwater Management Action Plan - Program CIP Duwamish Hill Preserve Phase 3 Surface Water (412 2025 2026 ,805 $1,285 994 $988 850 $698 625 $481 445 $344 305 $272 5260 $230 625 $- $994 $650 $850 $1,078 2,035 $- 5435 2027 2028 $994 $4,645 S850 $5,802 125 $144 4 $144 2,425 $- $994 $10 2029 2030 Total Costs $- 994' 5,855 $- $1,285 994 1 $5,964 $ $6,293 850 : 5850 i8 50 85,100 2225 5125 $144 $144 $10 i $210 $210 S50 $1,580 l $490 $530 $7,578 2,225 I 7,60 $144 $481 880 After six years 140 $1,064 $172 $305 $- $712 i $5,330 I 2,3 0 $460 $10 $2,660 $2,660 $6,550 J L Key Project Name 72541204 I Norfolk ©utfall Trunkline Sewer Separation Green the Green Program Decant Facility Comprehensive Landslide Risk and Assessment Enhanced Maintenance Plan 70041201 Regional Surface Water Partnerships 2541201 WSDOT 72541202 Stormater Retrofit & Maintenance Johnson Creek Fish Barrier Mitigation Alternatives Analysis Chinook Wind Public Access Project 72541201 y Fish Passage Barrier Prioritization Study 2541201 12541201 72541205 Fort Dent Park Water Quality Retrofit Green nfrastructure Program Nelsen/Longacres Ph II P17 Pond and Southcenter Subarea Hydraulic Study 2025 180 2028 2029 $145 $145 $145 $145 $145 500 $1,230 $60 $150 $250 $250 $80 $85 $105 i $105 $140 5100 $205 $205 Total Costs $585 925 $1,025 After six years $105 445 L Key Project Name 98641222 Regional Surface Water Partnerships Ryan Way Pipe Rehabilitation S 146th St Pipe, 35th Ave S Drainage Syste� Tukwila Parkway Gilliam Creek Outfalls Tukwila Pond ater Quality provement Total 92541202 90341214 91241205 92541204 1 $10473 $10,601 18,670 1 $9,848 2029 2030 $5,523 Total Costs $9,253 $64,368 After six years $1,230 $983 $9,645 PROJECT: CITY OF TUI:ILf CAPITAL PROJECT SUMMARY ti2025 to 2030 S 131 st Pl Drainage Improvements Project Manager Joshua;Hopkins DepartrnE DESCRIPTION: USTIFICATION: STATUS:: MAINTENANCE IMPACT: FINANCIAL (in thousands) Project # 91641204 Surface Water Developing alternate horizontal alignment for Southgate Creek in conjunction with replacing a fish barrier culvert. Scope expanded in 2024 to increase hydraulic analysis limits to address persistent flooding not addressed with the preliminary hydraulic design. Southgate Creek cvertops,ts bank several times per year during storm events and runs through priv property. Debris is deposited within a private; driveway and storm system. 1-IPA permitted dredging is performed annually on the creek to remove excess sediment likelihood of flooding. Project will include 1-year contract maintenance and typically 2-to-4 years of plant establishment. Project improvements will be turned over to surface water division for routine maintenance. Project applied acquisition gran Project Costs Project Mgmt (Staff Time/Cost) Planning Land (R/W) Construction Mgmt. Construction Total Project Costs Project Funding Awarded Grant Proposed Grant Utility Revenues or Department of Ecology des gn development funding and Conservation Futures property support the expanded hydraulic analysis. Assumes estimated 2028 construction. 2025 $ 25 $ 780 $ 1,000 $ - $ - $ 1,805 $ 706 $ 1,105 $ 205 2026 $ 25 $ 600 $ 1,000 $ 1,625 2027 2028 $ 25 $ - $ 400 $ 2,000 2,425 $ $ - $ $ 1,600 $ $ 825 2029 2030 Beyond TOTAL $ 75 $ 1,380 $ 2,000 $ 400 $ 2,000 $ 5,855 $ 706 $ 4,330 $ 1,030 Total Project Funding $ 2,016 $ 1,625 $ - $ 2,425 6,066 PROJECT: CITY OF TUK:IL CAPITAL PROJECT SUMMARY 2025 to 2030 Project Manager Mike Perfetti DESCRIPTION: STATUS MAINTENANCE IMPACT: COI NT: FINANCIAL (in thousands) Chinook Wind Extension Project # 92341202, c Department Surface Wat Following the Public Works Facility Preferred Master Plan (2019) and the Duwamish Gardens Opportunities for Expansion Concept Plan (2013), this project will develop connecting shoreline habitat and the 'missing trail link' between Duwamish Gardens and Chinook Wind within recently acquired City property. This Is a:Tier 1 project in the WRIA t Sal protecting and enhancing estuary habit in the community for many years and is The project is currentlyat'S0% design. This is a work in progress. The Green Infrastructure Program Proposal is intended, in part, to address maintenance needs for PW-initiated habitat restoration projects and helping to alleviate pressure on Parks' given resource constraints. Note that vegetation management maintenance needs decrease over time as planted vegetation matures. 3 years is considered a rule of thumb for plant establishment. oriiRecovery Plan, fulfilling a' core recoverystrategy of storing, in the Duwamish River. The trail connection has been discussed anticipated to be part of larger, popular shoreline trait. This grant funded project is being implemented as part of the PW Shops Ph 2 project. There are expectations by the granting agency that the project will be constructed. It is the middle link of the Duwamish Gardens/Chinook Wind trait and "blue belt" aquatic restoration corridor. 2025 2026 2027 2028 2029 2030 Beyond TOTAL Project Costs Project Mgmt (Staff Time/Cost) Design Construction Mgmt. Construction Contingency $ 10 $ 50 $ 200 $ 1,000 $ 25 $ 10 $ 50 $ 200 $ 1,000 $ 25 Total Project Costs $ 1,285 $ 1,285 Project Funding Proposed Grant Utility Revenues Total Project Funding $ 1,000 $ 285 $ 1,285 $ 1,000 285 PROJECT: CITY OF TU1 1L CAPITAL PROJECT SUMMARY 2025 to 2030 Annual Small Drainage Program Project Manager Joshua Hopkins Depart Project # ni DESCRIPTION: Select, design, and construct small drainage projects throughout the City. JUSTIFICATION:. STA S 82541201 Surface Water Provide drainage corrections for existing/ongoing drainage problems throughout the City, including culy replacements, drain extensions, and pavement upgrades, Projects MAINTENANCE IMPACT: N/A COMMENT: 0 his annual program are taken from Small Drainage Project Ongoing project,;only one.year shown in first column, Construction expenses may occur over fivuo cat rid years. FINANCIAL (in thousands) 2025 2026 2027 2028 2029 2030 Beyond TOTAL Project Costs Project Mgmt (Staff Time/Cost) $ 24 $ 24 $ 24 $ 24 $ 24 $ 24 $ - $ 144 I Design $ 110 $ 110 $ 110 $ 110 $ 110 $ 110 $ - $ 660 Construction Mgmt. $ 110 $ 110 $ 110 $ 110 $ 110 $ 110 $ - $ 660 Construction $ 750 $ 750 $ 750 $ 750 $ 750 $ 750 $ - $ 4,500 1 Total Project Costs $ 994 $ 994 $ 994 $ 994 $ 994 $ 994 $ - $ 5,964 Project Funding Utility Revenues $ 994 $ 994 $ 994 $ 994 $ 994 $ 994 $ - $ 5,964 Total Project Funding $ 994 $ 994 $ 994 $ 994 $ 994 $ 994 $ - $ 5,964 CITY OF TUIL. CAPITAL PROJECT SUMMARY 2025 to 2030 PROJECT: Nelsen Side Channel Project # 91641203 Project Manager Mike Perietti Department Surface DESCRIPTION: Create a multibeneficial project that restores off -channel salmon rearing habitat by setting back the 1-405 levee, reconnecting a segment of historic river channel and providing public shoreline access. channel habitat for threatened Chinook Salmon and other satmon,is extremely limited in the Lower USTIFICATION: Green River. WRIA 9 has identified this project in the Salmon Habitat Ptan. it was identified in the 2013 Surface Water Comprehensive Ptan. STATUS: MAINTENANCE IMPACT: COMMENT: FINANCIAL (in thousands The City has recieved grant funds for project design. City staff is proposing to purch to expand the project site. Design will begin in 2024-25. This is a work in progress. The Green Infrastructure Program Proposal is intended, in part, to address maintenance needs for PW-initiated habitat restoration projects and helping to alleviate pressure on Parks, given resource constraints. Note that vegetation management maintenance needs decrease over time as planted vegetation matures. 3 years is considered a rule of thumb for plant establishment. adjacent property This is one of th ontyopportunities to create critically needed off -channel habitat on public tends along th tower Green River in Tukwila. There is potential to roughlytripte the project site by acquiring adjacent, vacant and largely (if not entirety) undevetopabte property. 2025 2026 2027 2028 2029 2030 Beyond TOTAL Project Costs Project Mgmt (Staff Time/Cost) Design Land (R/W) Construction Mgmt. Construction Contingency $ 20 $ 600 $ 268 $ - $ - $ 100 $ 10 $ 625 $ - $ 15 $ 20 $ 385 $ 4,200 $ 40 Total Project Costs $ 988 $ 650 $ 4,645 $ 10 $ 60 $ 1,225 $ 268 $ 385 $ 4,200 $ 155 fi $ 6,293 Project Funding Awarded Grant Proposed Grant Utility Revenues $ 815 $ 173 $ 150 $ 500 $ - $ - $ 4,295 $ 350 $ 10 $ 965 $ 4,795 $ 533 Total Project Funding $ 988 650 $ 4,645 $ 10 $ 6,293 PROJECT: Project Manager Sherry Edglid DESCRIPTION: STATUS: CAPITAL PROJECT SU 2025 to 2030 Levee Program Project # Department Surface 91341203 Reconstruct levees to provide 500-year level of flood protection in the Southcenter subarea, obtain levee certification of the 205 levee and coordinate with the King County Flood Control District and/or US Army Corps of Engineers on other levee projects. The US Army Corps of Engineers no longer provides tevee certification services to tiy authorized levees, The existing 205 levee certification expired in August 2013. Certification is required for the Federal Emergency Management Agency to accredit the levee system as providing a 100-year level of flood protection, This Ms funds the Levee Project Manager position to coordinate with King County Rood Control District` and US Army Corps of Engineers. This program is just in its infancy the Southcenter subarea. MAINTENANCE IMPACT: N/A FINANCIAL (in thousands) k4 Project Costs Project Mgmt (Staff Time/Cost) Design Total Project Costs Project Funding Utility Revenues 2025 $ 150 $ 700 850 $ 850 2026 e recon 2027 2028 'de 500-yea 2029 2030 $ 150 $ 150 $ 150 $ 150 $ 150 $ 700 $ 700 $ 700 $ 700 $ 700 $ 850 850 $ 850 $ 850 $ 850 $ 850 $ 850 $ 850 ood protection in Beyond TOTAL $ 900 $ 4,2001 $ 5,100 $ 5,100 Total Project Funding 850 $ 850 $ 850 $ 850 $ 850 $ 850 5,100 PROJECT: CITY ©FTUIL CAPITAL PROJECT SUMMARY 4 to 0 0Y@xi xi Gilliam Creek Fish Barrier Removal and Habitat Enhancement Project Project Manager Joshua Hopkins DESCRIPTION: STA Dep Project # ent Surface late, 99830105 Construct fish passage improvements at existing flap gate and restore salmonid habitat; replace flap gate ti which may include a self-regulating tide gate or flood wall. Enable fish access to tower Gillian, Creek under wider range dfftow conditions, fish barrier per;WDFW and City; WRIA 9 saurian habitat project. tysis Design completed in 202 MAINTENANCE IMPACT: M&O is typically 3-5 years for HPA permits to revegetate streambanks following barrier removal. FINANCIAL (in thousands City applied to NOAA grants (Fish Passage & Transformational Habitat) in 2023 for design development and construct on funding for the preferred alternative (estimated $24 M). C tywas not selected for one of the pro grants. Meanwhile, the 66th Ave S culvert tide gate and upstream debris rack (fish barriers) are causing l erosion of the streembehke upstream of the 66th Ave S culvert, Permitting agencies may requ re fish passage as a condition of permits to repair the aforementioned erosion. 2025 2026 2027 2028 2029 2030 Beyond TOTAL Project Costs Project Mgmt (Staff Time/Cost) Design Construction Mgmt. Construction $ 78 $ 620 $ - $ - $ 78 $ 1,000 $ - $ 78 $ - $ 1,076 $ 4,648 $ 234 $ 1,620 $ 1,076 $ 4,648 Total Project Costs 698 $ 1,078 $ 5,802 $ 7,578 Project Funding Awarded Grant Proposed Grant Utility Revenues $ 680 $ 18 $ - $ 1,000 $ 78 $ 680 $ 6,802 $ 96 Total Project Funding 698 $ 1,078 $ 5,802 $ 7,578 PROJECT: CITY ©FTUIL CAPITAL PROJECT SUMMARY 2025 to 2030 Stormwater Water Quality Retrofit Program Project Manager Joshua Hopkins DESCRIPTION: USTIFICATlON- STA" Project # 91241202 Department Surface Water Plan, design, and install water quality treatment and other stormwater conveyance improvements at targeted drainage locations. ost su face water is discharged: directly to receiving water bodies untreated. MAINTENANCE IMPACT: N/A ENT: (FINANCIAL (in thousands) utility retrofit h been added to CIP projects sin ce201 Co other CIP projects for design and construction, wherefeasib(e. 2025 2026 2027 2028 2029 2030 Beyond TOTAL Project Costs Project Mgmt (Staff Time/Cost) Design Construction Mgmt. Construction $ 25 $ 100 $ 100 $ 400 $ 25 $ 300 $ 300 $ 1,410 $ 25 $ 100 $ 25 $ 400 $ 1,800 $ 25 $ - $ 400 $ 1,800 $ 25 $ 20 $ 15 $ 80 $ 175 $ 620 $ 1,215 $ 5,490 $ 7,500 Total Project Costs 625 $ 2,035 $ 125 $ 2,225 $ 125 $ 2,225 140 Project Funding Awarded Grant Proposed Grant Utility Revenues $ 125 $ 425 $ 75 $ 1,410 $ 300 $ 325 $ 125 $ - $ 1,530 $ 695 $ 125 $ - $ 1,530 $ 695 $ 140 $ 1,535 $ 3,785 $ 2,180 Total Project Funding 625 $ 2,035 125 $ 2,225 125 $ 2,225 140 7,500 PROJECT: Project DESCRIPTION: JUSTIFICATION: STATUS:' CITOFTU A CAPITAL PROJECT SUMMARY 2025 to 2030 Gilliam Creek Erosion Repair ger Joshua Hopkins Project # 82541202 Department Surface Stabilize and protect eroded streambank slopes upstream of the 66th Ave S culvert inlet This project is intended to protect the 66th Ave S roadway infrastructure and prevent future flooding to Southcenter. e project has been scoped for design, pi ntrot District to cover ell costs. ing and construction and a grai applied for with the Flood MAINTENANCE IMPACT: M&O is for three years, so 3x $8,400. Mitigation is expected in the form of vegetation restoration for temporary and permanent impacts, cost is unknown. FINANCIAL (in thousands) This work is to occur during the in -water work window for the Green R ver and Gilliam Creek and may require mitigation for project impacts to aquat c and stream buffer hab tat. 2025 2026 2027 2028 2029 2030 Beyond TOTAL Project Costs Design Construction Mgmt. Construction $ 128 $ 90 $ 263 $ 128 $ 90 $ 263 Total Project Costs $ 481 $ 481 Project Funding Proposed Grant $ 481 481 Total Project Funding $ 481 $ 481 PROJECT: Project Manager DESCRIPTION: JLIs' iSTA FICATION: CITY OF TUICIL CAPITAL PROJECT SUMMARY 2025 to 2030 Tukwila Urban Center Conveyance Inspections Mike Perfetti Project # 912412031 Department Surface Wate The network of storm pipes in the core retail area of Tukwila has not been inspected in the last several decades. Because there have been no inspections, pipe condition is unknown and rehabilitation, repair, and I replacement needs are therefore unknown. It is likely that a significant amount of sediment exists within the storm network in that area. Several stormwater pipes have been selected as higher priority because of the large pipe sizes and more significant impact should a pipe fail. The selected area includes 1)Andover Park E from S. 180th Street to Minkler Boulevard, 2) 36" pipe from Minkler Boulevard to Azteca Restaurant, 3) Andover Park West from Tukwila Parkway to S 180th Street, 4) Minkler Boulevard from Southcenter Parkway to ditches at Andover Park West, and 5) Minkler Boulevard to Industry Drive. Blockage of stormwater system may lead to flooding and water qualitydegrdation. Pipes have not been cleaned or inspected since installation. Prioritize in 2025. been identified. Internal discussions in 2024 to set up for work MAINTENANCE IMPACT: O&M inspects and maintains pipes, catch basins and other assets as part of normal operations. This project will require participation by O&M but will largely relieve ongoing O&M burden. CO FINANCIAL (in thousands) In order to assess the pipe conditions, the storm draIn pip es"witt be i fled end the sediment Witt be :.. disposed of. Then the pipe interior witt be inspected using a remote-controt camera. The inspection will b; recorded.Rehabilitation, repair, and replacement needs w tt then be known and prioritized. 2025 2026 2027 2028 2029 2030 Beyond TOTAL Project Costs Project Mgmt (Staff Time/Cost) Design Construction Mgmt. Construction Contingency $ 15 $ 200 $ 20 $ 200 $ 10 $ 15 $ 390 $ 20 $ 10 Total Project Costs $ 445 435 $ 30 $ 590 $ 40 $ 200 $ 20 $ 880 Project Funding Utility Revenues 445 435 Total Project Funding $ 445 $ 435 $ 880 $ 880 CITY OF TUt 1Lf CAPITAL PROJECT SUMMARY PROJECT: Project Manager Russell 6etteriidge DESCRIPTION: STATUS:. MAINTENANCE IMPACT: ,GO' ENT: FINANCIAL (in thousands) 2025 to 2a34 NPDES Program Project # Department Surface Water 99341210h Provide programmatic implementation support of the State DOE Phase II Western Washington NPDES permit. The Annual Surface Water Management Plan specifies a NPDES reporting and action plan for City compliance. The services/supplies funds will also include any illicit discharge (spill cleanup) costs that may occur in the City's right-of-way. State Mandated Permit "Nation Pollutant Discharge Elimination System (NPDES) Phase If Western ashington". Federal Clean Water Act and Additional State Waste Discharge Permit RCW 90.48. NPDES requirements are ongoing with new permit requirements every 5 years (2024-2029). Requirements cover all divisions of the city including Public Works, Golf/Parks, Police, Planning, and Facilities. Costs shown include emergency supplies, testing equipment, Lab testing fees, and annual consultant support. Added requirements require changes to conform with NEW requirements, e.g. New Inspection and street weeping requirements wilt require more staff time to complete and document as welt as new equipmen and supplies. Curren y Compliant with new permit updates in the planning Oa The City is typically granted Capacity Grant funds to cover much of the coordination expenses and some o the additional expenses. Each division should track costs incurred to manage pollution such as spill kits, staff time for surface water pollution prevention inspections on qualifying city facilities and during field operations within the jurisdiction. This cost is not accounted for in the impact cost above. In addition to the NPDES permit, there are specific actions undertaken to assist in the tower Duwamish Superfund compliance effort, such as source control inspections, PCB investigations and discharge responses. 2025 2026 2027 2028 2029 2030 Beyond TOTAL Project Costs Project Mgmt (Staff Time/Cost) Design Planning $ 72 $ 200 $ 72 $ 72 $ - $ 72 $ 72 $ 72 $ - $ - $ 72 $ 72 $ 72 $ - $ 72 $ 72 $ - $ 72 $ 86 $ 86 $ 518 $ 200 $ 518 1 I Total Project Costs 344 $ 144 $ 144 $ 144 $ 144 $ 144 172 1,236 Project Funding Proposed Grant Utility Revenues Total Project Funding $ 279 279 $ 130 $ 79 209 $ - $ 130 $ 79 $ 79 79 $ 209 $ 79 $ 79 $ 130 $ 79 $ 209 $ 79 79 $ 390 $ 753 1,143 PROJ ECT: CITY OF TUINIL CAPITAL PROJECT SUMMARY ect Manager . Joshua Hopkins 2025 to 2030 Lower Green Riverfront Master Plan DESCRIPTION: USTIFICATION: STATUS: Project # Department Surface Water 72541203 Flood protection projects sponsored by KCFCD and federal partners are imminent. City will need to begin master planning immediately in order to guide aesthetic and community considerations of these projects. The Tukwila Levee Accreditation Phase 1 (NHC, 2015) & Phase 2 (MHO, 2019) are guiding docurrtents for City flood hazard management priorities and recommendations for implementation on the 205 Levee. The KCFCD has adopted the prioritized projects to the KCFCD CIP List for implementation. City needs to plan and develop preferred alternatives to guide the KCFCD CtP implementation. Project CIP Identified in 2024 Surface Wat advertised to contract with a consultant. MAINTENANCE IMPACT: N/A COMMENT N/A (FINANCIAL (in thousands 2025 2026 er Comp Plan. Funding need to be budgeted and an RFQ/RFP 2027 2028 2029 2030 Beyond TOTAL Project Costs Project Mgmt (StaffTime/Cost) Planning Total Project Costs 30 $ 275 $ 305 $ $ 30 $ 275 $ 305 Project Funding Utility Revenues 305 $ 305 Total Project Funding 305 $ 305 PROJECT: Project Manager DESCRIPTION: JUSTIFICATION: STA S CITY OF TUKILA CAPITAL PROJECT SUMMARY 2025 to 2030 MAINTENANCE IMPACT: (FINANCIAL (in thousands) S. 104th St Shoreline Restoration Mike Perfett Project # 92541203' Department Surface Water The armored bank on an outside bend of the Duwamish River adjacent to S. 104th Street is steep and subject to erosion and potential failure. This project would analyze site conditions and develop solutions to create a sustainable shoreline that can withstand hydraulic forces, reduce erosional risk to uplands and provide ecological value. This is project DUW-26 in the WRIA 9 2021 SalmoniTecoveryPlan Update. The City roadway and adjacert properties and utilities may be at risk under current conditions. The project is running behind schedule, the intent is to start with a geotechnical anal sjs analysis of existing conditions and conceptual feasibility and alternative design. This is a work in progress. The Green Infrastructure Program Proposal is intended, in part, to address maintenance needs for PW-initiated habitat restoration projects and helping to alleviate pressure on Parks' given resource constraints. Note that vegetation management maintenance needs decrease over time as planted vegetation matures. 3 years is considered a rule of thumb for plant establishment. ys of the bank This project initiattty appeared in the 2003 Surface Water Comp Plan as "S 104th St Bank Stabilization Project', in response to some observed erosion; despite this, the bank appears somewhat stable, but is xtremety steep and cracking is observed on the roadway; some adjacent and uses and access routes have been altered to open up the viabitityof laying back and restoring the shoreline. 2025 2026 2027 2028 2029 2030 Beyond TOTAL Project Costs Project Mgmt (Staff Time/Cost) Design Construction Mgmt. Construction Contingency $ 12 $ 250 $ - $ 10 $ 10 $ 200 $ 10 $ 30 $ 300 $ 4,000 $ 1,000 $ 82 $ 650 $ 300 $ 4,000 $ 1,010 Total Project Costs $ 272 $ 10 $ 210 $ 210 $ 5 $ 5 $ 5,330 $ 6,042 Project Funding Proposed Grant Utility Revenues $ 272 $ 150 $ 60 $ 150 $ 60 $ 5 $ 4,500 $ 1,830 $ 4,800 $ 2,242 Total Project Funding 272 10 210 $ 210 5 5 $ 6,330 7,042 PROJECT: CITY OF TUtILA CAPITAL PROJECT SUMMARY ,mMr�r2025 to030 �w,,,.„p M�r Riverton Stormwater Management Action Plan - Project Manager. Sherry Edquid DESCRIPTION: STA'i Project # Program CIP 82541203' h Department Surface Water This CIP is a program to implement the Stormwater Management Action Plan (SMAP) a new requirement under the NPDES Permit. The SMAP directed the City to invest and prioritize one stream system the city selected Riverton. The SMAP for Riverton Creek identifies four priority stormwater retrofits and a handful of lower priority stormwater retrofits with the goal of improving water quality while accommodating future growth in the basin. Of the four short-term projects we would begin design and possibly construction for two of the four projects over the course of the next six years. ashington State Department of E olo y jll likely require us via the NPDES permit to begin implementing the SMAP necessitating the need to begin design and construction these short-term retrofit projects. The MAP was also included as part of the Surface Water Comprehensive Plan (SWCP). The SMAP provided a basic project description and cost estirratefor these prrije MAINTENANCE IMPACT: Surface Water and Transportation I am proposing to imp ement these two projects SMAP-4 Tukwila International Boulevard: 0983 Water Quality Retrofit and SMAP-5 South 130th St Right of Way Bioretention Plante suss sto s. 2028 TA TOTAL FINANCIAL (in thousands k (' ) 2025 2026 2027 2029 2030 Beyondw Project Costs Project Mgmt (Staff Time/Cost) $ 20 $ 20 $ 20 $ 40 $ - $ - $ - $ 100 Design $ 230 $ 30 $ 130 $ - $ - $ - $ - $ 390 Planning $ 10 $ - $ - $ - $ - $ - $ - $ 10 Land (R/W) $ - $ - $ 10 $ - $ - $ - $ - $ 10 Construction Mgmt. $ - $ - $ 120 $ 35 $ - $ - $ - $ 155 C Construction $ - $ - $ 1,200 $ 375 $ - $ - $ - $ 1,575 Contingency $ - $ - $ 100 $ 40 $ - $ - $ - $ 140 Total Project Costs $ 260 $ 50 $ 1,580 $ 490 $ - $ - $ - $ 2,380 1 Project Funding Proposed Grant $ 208 $ 40 $ 1,264 $ 392 $ - $ - $ - $ 1,904 Utility Revenues $ 52 $ 10 $ 158 $ 98 $ - $ - $ - $ 318 I General Fund Transfer $ - $ - $ 158 $ - $ - $ - $ - $ 158 Total Project Funding $ 260 $ 50 $ 1,580 $ 490 $ - $ - $ - $ 2,380 PROJECT: CITY OF TU1 1L CAPITAL PROJECT SUMMARY 2025 to 2030�'4 Duwamish Hill Preserve Phase 3 Project Manager Mike Perfetti DESCRIPTION: JUSTIFII STATUS: MAINTENANCE IMPACT: COMMENT: FINANCIAL (in thousands) Project # Department Surface Water. 92241203 The goals of the project are to restore the shoreline to create off -channel habitat and expand the park visitor experience. The park master plan calls for moving a portion of S. 115th Street landward to improve shallow water habitat, water quality and enjoyment of the shoreline. Final design will be informed by a feasibility evaluation and alternatives evaluation process. This project is described in the Duwamish Hilt Preserve Park Master Plan and is listed as P the WRIA 9 Satrncn Habitat Plan (2021) The project has soile funding in the 202; advertisement is planned for 2024. This is a work in progress. The Green Infrastructure Program Proposal is intended, in part, to address ct DU3 in -24ClPfor initial feasibitity ork. Project initiation and consultant maintenance needs for PW-initiated habitat restoration projects and helping to alleviate pressure on Parks' given resource constraints. Note that vegetation management maintenance needs decrease over time as planted vegetation matures. 3 years is considered a rule of thumb for plant establishment. The Citycornpleted acquisitions of properties identified in master plan that maybe used forth Two smal additional undeveloped properties are for sate that would expand the parkfootprint 2025 2026 2027 2028 2029 2030 Beyond prole! TOTAL Project Costs Project Mgmt (Staff Time/Cost) Design Land (R/W) Construction Mgmt. Construction Contingency $ 10 $ 200 $ 20 10 200 300 $ 20 20 $ 400 $ 40 5 $ 5 20 $ - $ 200 $ 2,000 $ 440 20 $ 200 $ 2,000 $ 440 $ 85 $ 800 $ 300 $ 400 $ 4,000 $ 965 6,550 $ 4,860 $ 1,690 Total Project Costs 230 $ 530 460 10 $ 2,660 $ 2,660 Project Funding Proposed Grant Utility Revenues $ 230 $ 460 $ 70 $ 400 $ 60 $ 10 $ 2,000 $ 660 $ 2,000 $ 660 Total Project Funding 230 $ 530 $ 460 $ 10 $ 2,660 $ 2,660 $ $ 6,550 PROJECT: Project Manage DESCRIPTION: CITY OF TUK IL CAPITAL PROJECT SUM ARY 2025 to 2030 � r lk Outfall Trunktine Sewer Separation Feasibility USTIFICATION: STA' S: Norio oshua Hopkins Depart ent Surface Water The project is a preliminary feasibility study to document the City's and adjacent private property storm drainage systems within the right-of-way and the CSO system in the area within the City boundary, document any City storm drain connections to the CSO tine, and evaluate risks and alternative solutions if connections of the City's storm drains to the CSO trunkline and private systems are discovered. The City installed a stormwater trunktine along E argginat 11Vay S in the 1990s for the purpose of sepal ati stormwater ftows from both the combined sewer system and the adjacent private stormwater system owned by Boeing. However, City staff has anecdotal information that the connections of Citystormwater l terats into the E Marginat Way S storrnwater trunktine were not completed as designed, likely due to utility conflicts encountered in thefield. Advertise RFP/RFQfor consut MAINTENANCE IMPACT: N/A COMME kCFINANCIAL (in thousands) contract to perform pre in sibitity. This is a priority project to understand Tukwita"s responsib tity and potential lrabi Duwamish River Super Fund Site cleanup 2025 2026 2027 2028 2029 2030 y� fated to th Beyond TOTAL Project # 72541204 ng j Project Costs Project Mgmt (Staff Time/Cost) Design $ 25 $ 155 $ $ $ $ 25 $ 155 i Total Project Costs $ 180 $ 180 Project Funding Utility Revenues Total Project Funding 180 $ 180 180 180 PROJECT: CITY OF TUIL CAPITAL PROJECT SUMMARY x R,ra un �2025 to 2030 Project Manager Mike Perfetti DESCRIPTION: USTIFICATION`` STATUS: Green the Green Program Project # Department Surface Wa 91641202I This program supports revegetation and restoration efforts along watercourses within the City with main goal of providing habitat, improving water quality and reducing water temperatures. Funding may be utilized for costs related to planting or maintenance and include City and partner projects that contribute to the goals. MAINTENANCE IMPACT: Ct? E FINANCIAL (in thousands) WRIA 9 has identified warm water temperatures as an impediment to salmon recovery, and has a funding program called, "ReGreen the Green"' which aims to support revegetation projects along the river. Picot projects at NC Machinery & Southcenter Plaza completed in 10yr maintenance period. Funding maintenance of Riverton Creek, Duwamish Gardens; Partner Project w MidSou rid Fisheries and Puget Sound Partnership fi Cost based on rough average of contracted maintenance costs for Riverton Creek. Duwamish Gardens and Green the Green CIP (JSH/Harnish). Note that costs decrease over time. Plant establishment is usually around 3 years, but obligations are generally for 10 years. Note that, to date, these maintenance costs have been exclusively contracted. grant funding ongoing. Funding to date has come from WRIA9 and the Rose Foundation. Note that thi fund is not intended to be used for mitigation obligations associated with other CIP projects. Project Costs Project Mgmt (Staff Time/Cost) Design Construction Contingency 2025 $ 5 $ 20 $ 100 $ 20 2026 $ 5 $ 20 $ 100 $ 20 2027 $ 5 $ 20 $ 100 $ 20 2028 $ 5 $ 20 $ 100 $ 20 2029 $ 5 $ 20 $ 100 $ 20 2030 $ 5 $ 20 $ 100 $ 20 Beyond $ 5 $ 20 $ 100 $ 20 TOTAL $ 35 $ 140 $ 700 $ 140 Total Project Costs 145 $ 145 145 $ 145 145 $ 145 145 1,015 Project Funding Proposed Grant Utility Revenues $ 45 $ 100 $ 45 $ 100 $ 45 $ 100 $ 45 $ 100 $ 45 $ 100 $ 45 $ 100 $ 45 $ 100 Total Project Funding $ 145 $ 145 $ 145 $ 145 $ 145 $ 145 145 $ 315 $ 700 $ 1,015 PROJECT: CITY OF TU1{:IL 4 CAPITAL PROJECT SUP 2025 to 2030 Soils Reclamation/Decant Facility Project Manager Sherry Edquid DESCRIPTION: US11FICATION: STA Department Project # 92341201 Surface Water Construct soils reclamation facility to handle, treat, dispose and/or reuse non -hazardous street sweepings and catch basin cleanings, etc. (formerly named DrainageNactor Waste Facility). To meet State NPDES regulations, the City needs facilities to treat & dispose of waste materials re: from cleaning/maintenance activities, including street sweepings and Vactor truck wastes. The Soils Reclamation/Decant Facility is being bui Facility project. Currently in project design. ing as part of the over new Public Works Fleets and Water, Sewer and Surface Water will fund maintenance of the new facility and possibly King County Metro kMAINTENANCE IMPACT: who we will likely develop an ILA to dispose of their waste on our site. Also, not needing to use King County's decant facility for disposal would reduce expenses. FINANCIAL (in thousands) The Enhanced Maintenance Plan (EMP) and the Soils Reclamation/Decant Facility - design is being by an Eco ogygrant. Witt be apply rig for an Ecotogy grant to fund construction. 2025 2026 2027 2028 2029 2030 Beyond nded TOTAL Project Costs Project Mgmt (Staff Time/Cost) Design Construction Mgmt. Construction Contingency $ 30 $ 20 $ 100 $ 650 $ 100 $ 30 $ - $ 100 $ 1,000 $ 100 $ 85 $ 150 $ 200 $ 1,700 $ 200 Total Project Costs 145 $ 900 $ 1,230 $ 60 2,335 Project Funding Awarded Grant Proposed Grant Fund Balance $ 325 $ - $ 1,000 $ 480 $ 500 $ 30 Total Project Funding $ 325 $ 1,480 $ 500 $ 30 $ 325 $ 1,530 $ 480 $ 2,335 PROJECT: CITY OF TUt 1LfA CAPITAL PROJECT SUMMARY 2025 to 2030 Comprehensive Landslide Risk and Assessment ject Manager Sherry Edquid DESCRIPTION: JUSTIFICATION:' STATU Project # 32341201 Department Surface Water This plan wilt build upon the state and county landslide information to identify landslide hazards and provide an understanding of comprehensive risks within the City of Tukwila, with the goats of reducing property damage and life toss from landslides. Ve received a Cooperative Technical Pare `s Gram -from FE IMA with zero match. This'is also included in he Surface Water Comprehensive Plan. The RFP is currently being advertised fora consuttan MAINTENANCE IMPACT: N/A This is a'joint effort with DCD and will evaluateforest health as well as critical utilities ithinthese landslide risk areas. FINANCIAL (in thousands) 2025 2026 2027 2028 2029 2030 Beyond TOTAL Project Costs Project Mgmt (Staff Time/Cost) $ 20 $ 30 $ - $ - $ - $ - $ - $ 50 Planning $ 120 $ 120 $ - $ - $ - $ - $ - $ 240 Construction $ - $ - $ 250 $ 250 $ - $ - $ - $ 500 Total Project Costs $ 140 $ 150 $ 250 $ 250 $ - $ - $ - $ 790 Project Funding Awarded Grant $ 140 $ - $ - $ - $ - $ - $ - $ 140 Proposed Grant $ - $ 150 $ 250 $ 250 $ - $ - $ - $ 650 Total Project Funding $ 140 $ 150 $ 250 $ 250 $ - $ - $ - $ 790 1 PROJECT: CITY OF;TUI{WILA CAPITAL PROJECT SUMMARY 2025 to 2030 Enhanced Maintenance Plan Project Manager Sherry Edquid DESCRIPTION: US11F1CATtON: STATUS Department Project # Surface Water 72341203 The Enhanced Maintenance Plan (EMP) - grant funded wilt evaluate the city's parks, golf and surface water's O&M program - software, equipment, staffing as well as looking at Best Management Practices (BMPs) implemented by other cities. This information will be compiled into a report and make recommendations with the overall goal of removing sediments and pollutants from roadway runoff. An EMP is required to receive design/construction grunt funding from.Ecotogyfor the Soit Reclamation/Decant Facility. The other EMP recommendations witt be eligible for future grant funding as welt. e have held an EMP workshopto interview city staff regarding the beginning to interview other jurisdictions regarding their O&M progra urrent O&M program: We are MAINTENANCE IMPACT: This is only and plan but it may be able to grant fund O&M expense if we can demonstrate it will remove more sediments and pollutants from roadway runoff. ENT: /A FINANCIAL (in thousands) Project Costs Project Mgmt (Staff Time/Cost) Planning 2025 $ 20 $ 80 2026 2027 2028 2029 2030 Beyond TOTAL $ 20 $ 80 Total Project Costs 100 $ 100 Project Funding Awarded Grant Utility Revenues $ 85 $ 15 $ 85 $ 15 Total Project Funding 100 $ 100 PROJECT: CITY OF TU I IL 4 CAPITAL PROJECT SUMMARY 2025 to 2030 Regional Surface Water Partnerships Project Manager Mike Perfett DESCRIPTION: US11EICATION: STATUS: Project # Department . Surface Water 70041201 The City is party to a number of ongoing inter -agency partnerships related to surface water including WRIA 9, a streamgages funding program with USGS and a Duwamish Steward ILA. These partnerships generatty arise as part of cottaboration to recover =salmon species fisted under the Endangered Species Act (ESA) and to improve water 'quality within the. Green/Duwamish watershed, RIA 9 ILA is through 2025; Ouwarnish Steward ILA through 2026; treamgages annually: MAINTENANCE IMPACT: N/A Ongoing partnerships Some discussions about a farmatization of Our Green Duwamish Partnership on going, which coutd have cost imprcations. FINANCIAL (in thousands) 2025 2026 2027 2028 2029 2030 Beyond TOTAL Project Costs Project Mgmt (Staff Time/Cost) Design $ 5 $ 75 $ 5 $ 80 $ 5 $ 100 $ 5 $ 100 $ 5 $ 100 $ 5 $ 100 $ 5 $ 100 $ 35 $ 655 Total Project Costs $ 80 85 $ 105 $ 105 $ 105 $ 105 105 $ 690 Project Funding Utility Revenues $ 80 $ 85 105 $ 105 $ 105 $ 105 105 $ 690 Total Project Funding 80 85 105 $ 105 105 $ 105 105 690 PROJECT: CIF TUIWILA CAPITAL PROJECT SU1 2©25 to t 0 x WSDOT Stormwater Retrofit & Maintenance Project Manager Sherry Edquid DESCRIPTION: STATUS Program kepi Project # Surface Water 32541201 This entails reporting, designing and constructing stormwater control facilities that directly reduce stormwater impacts from state highways. The City of Tukwila operates a surface water utility and can collect these fees from Washington State Department of Transportation (WSDOT) if they utilize these funds directly towards reporting, planning and constructing stormwater control facilities that reduce impacts of runoff from state limited access highways or implementing best management practices that will reduce the need for these facilities. These conditions are further outlined in the Revised Code of Washington (RCW) Chapter 90.03.525. This is an annual program with annual reporting required to SDOT to utilize these surface water fees. MAINTENANCE IMPACT: Any maintenance expenses would need to be finalized into an ILA with WSDOT. The 2024 Surface Water Comprehensive Plan (SWOP) recommended two bioretion boxes locations COMMENT: underneath elevated highways structures and a maintenance project just north of Southcenter Boulevard and 1-5. We continue to bank the fund balance which receives approximately $150,000 annually, FINANCIAL ((in thousands 2025 2026 2027 2028 2029 2030 Beyond TOTAL�� Project Costs Project Mgmt (Staff Time/Cost) $ 10 $ 10 $ 10 $ 10 $ 10 $ 10 $ - $ 60 Design $ - $ 100 $ 100 $ 100 $ - $ - $ - $ 300 Planning $ 50 $ - $ - $ - $ - $ - $ - $ 50 Construction Mgmt. $ - $ - $ - $ 40 $ - $ - $ - $ 40 Construction $ - $ - $ - $ 475 $ - $ - $ - $ 475 l 1 Total Project Costs $ 60 $ 110 $ 110 $ 625 $ 10 $ 10 $ - $ 925 Project Funding Utility Revenues $ 60 $ 110 $ 110 $ 625 $ 10 $ 10 $ - $ 925 Total Project Funding $ 60 $ 110 $ 110 $ 625 $ 10 $ 10 $ - $ 925 PROJECT: Project Manager DESCRIPTION: FICATtON; STATUS• CITY OF TUt ILEA CAPITAL PROJECT SUMMARY 2025 to 2030 Johnson Creek Fish Barrier Mitigation Alternatives Analysis ke Pe Departmen Project # 72541202Z urface Water The goal of the project will be to identify a preferred solution to improve fish access to Johnson Creek while maintaining flood protection. King County 2019study, "Juvenile Chinook Use of Non-natat'>Tributaries iin Lower Green River", detei :hat flap gate is impassable to fish. ;additionally, the City of Kent's Johnson Creek Floodplain Project (LG- 4 in WRIA 9 Habitat Plan) is dependent on fish passage into Johnson Creek. King County recently purchased 30 acres of former farmland in Kent adjacent to the Tukwila boundary and Johnson Creek to facilitatefloodptain restoration, flood hazard management and agricultural use, Need to determine project responsibi ined Theflapgate is on property owned by the Curran Law Group. Its construction was required and permitted kMAINTENANCE IMPACT: bythe City and WDFW. Project and subsequent maintenance responsibility is still being determined. LINIMENT: FINANCIAL (in thousands) Johnson Creek rerouted and ftapgate placed as part of Tuwila South; Development ca. 2010 per City and. WDFW requirements. Property turned over to Drainage District No. 2 and subsequentty transferred to Curran Law Group. 2025 2026 2027 2028 2029 2030 Beyond TOTAL Project Costs Project Mgmt (Staff Time/Cost) Contingency $ 5 $ 30 $ 5 $ 20 $ 15 $ 50 Total Project Costs $ 35 5 25 $ 65 Project Funding Utility Revenues $ 35 $ 5 20 $ 60 Total Project Funding 35 5 20 60 CITY OF TU I IL 4 CAPITAL PROJECT SUMMARY PROJECT: Project Manager DESCRIPTION: US11EICATION: STATUS• MAINTENANCE IMPACT: COMM FINANCIAL (in thousands) Project Costs !Project Mgmt (Staff Time/Cost) !Contingency Total Project Costs Project Funding Utility Revenues 2�25 t©2©3© Chinook Wind Public Access Project ke Perfet Project # 91441202' Department Surface Water King County purchased site and will restore it as a salmon estuary and passive park in partnership with the I City. City CIP project is to develop public access and maintenance trail. Plan is to connect trail through PW shops to Duwamish Gardens. The WRIA 9 Salmon Recovery Ptan recommends creating 20 acres of off -channel habitat within':the Duwamish Transition Zone and lists this section of the river as critical habitat for salmon recovery within the Green/Duwamish Watershed. The project is currentty under c summer/fait completion. n stru ion but the contract uspended as of 6/ f 1/ 4, Anticipating This is a work in progress. The Green Infrastructure Program Proposal is intended, in part, to address maintenance needs for PW-initiated habitat restoration projects and helping to alleviate pressure on Parks' I given resource constraints. Note that vegetation management maintenance needs decrease over time as planted vegetation matures. 3 years is considered a rule of thumb for plant establishment. 2025 $ 5 $ 1 2026 2027 2028 2029 2030 Beyond TOTAL $ 5 $ 1 $ 6 $ 6 6 Total Project Funding 6 PROJECT: Project Manager Sherry Eclouid DESCRIPTION: MAINTENANCE IMPACT: FINANCIAL (in thousands CAPITAL PROJECT SU 2025 to 2030 Fish Passage Barrier Prioritization Study i Project # 72541201i Department Surface V The study would prioritize potential fish barrier removal projects based on feasibility, potential habitat gain, a importance of the stream system for fish use, and coordination with other barrier removal efforts and water quality improvement efforts in the stream system. was identified in the 2024 Surface Water Comprehensive Ptan. Not started This is only a study at this juncture and based on collected information it may make recommendations to fund future fish barrier removals. The presence offish passage barriers in creeks/streas is a critical risk tosalrnonids. Fish passage barriers` that can be corrected are human -made instream features that impede upstream f sh passage, such as culverts, dams, and diversions. The Northwest Indian Fisheries Commission's online map of Statewide Integrated Fish Distribution identifies the presence of multiple fish species, including satmonids, in all Tukwila streams with the exception of Nelsen. The City supports removal of barriers. Project Costs Project Mgmt (Staff Time/Cost) Planning 2025 2026 2027 2028 2029 2030 Beyond $ 30 $ 165 Total Project Costs $ 195 TOTAL $ 30 $ 165 b $ 195 Project Funding Utility Revenues $ 195 $ 195 Total Project Funding $ 195 $ 195 PROJECT: CITY OF TUIILA CAPITAL PROJECT SUMMARY 2025 to 2030 Fort Dent Park Water Quality Retrofit Project Manager . Sherry Edquid DESCRIPTION: JUSTIFICATION: STATUS: Project # Department Surface 92541201 This project will look at implementing water quality treatment for stormwater from the artificial turf fields that is collected in a pond and then pumped into the river. fxPPD-q is an emerging pollutant of concern that is known to, cause fish mortality and is found in art�t�ctat turf fields that use recycled tires in the foundation. Preliminary studies have shown that some biofiltration technologies are successful in removing 6PPD-q from runoff.: Over the next several years, "Ecology could:: establish a water quality standard, approve BMPs, issue design guidance, or incorporaterequirements for removal of 6PPD-q from runoffinto permits. Future development of this CIPwill need to consider the state he science and regulations on" 6PPD-q in runoff at the time of implementation. Project was recommended in 2024 Surface Water Comprehensive Plan MAINTENANCE IMPACT: N/A COMMENT. N/A FINANCIAL (in thousands) 2025 2026 2027 2028 2029 2030 Beyond TOTAL Project Costs Project Mgmt (Staff Time/Cost) Design 45 $ 400 45 $ 400 Total Project Costs $ 445 $ 445 Project Funding Proposed Grant Utility Revenues $ 385 $ 60 $ 385 $ 60 Total Project Funding $ 445 445 PROJECT: CITY OF TUINIL CAPITAL PROJECT SUMMARY 2025 to 2030 Green Infrastructure Program Project Manager Mike Perfetti Project # 12541201 Department Surface Water The proposed initiative addresses Citywide environmental element goats and addresses overlapping priorities among PW, DCD and Parks by creating a new mechanism to address tree canopy coverage, forest kDESCRIPTION: conservation and stewardship. Under this proposal, Public Works would establish an inventory of open space sites and assume operations of PW CIP habitat restoration sites and some future open space acquisitions. JUSTIFICATION: STATUS The maintenance of (Components of) PublicUUorks' initiated' habitat restoration projects, the implementation of the City's Green Tukwila Program and acquisition and maintenance of open space properties reside with the City's Parks and Recreation Department, which has limited resources to implement these tasks and programs. The GIP would bring on additional staff, creating solid green Indust job pathways, expanding Green Tukvvita's capacity to meet program and plan goats, reduce Parks' airitenance burden, and work towards meeting City open space and environmental goats. W and -Parks have been in progress. MAINTENANCE IMPACT: 0 FINANCIAL (in thousands orking through a draft program proposal and the details of thee ange n proposal is for an ongoing program that could be largely funded through the surface water utility ar to other cities Snoqualmie is a good model). Utilizing these enterprise funds will relieve burden on the general fund, which largely funds Parks and DCD staffing. This proposal modifies the existing approach for stewardship and habitat restoration stewardship, which currently falls within Parks. 2025 2026 2027 2028 2029 2030 Beyond TOTAL Project Costs Project Mgmt (Staff Time/Cost) Design $ 5 $ 5 $ 5 $ 5 $ 5 $ 5 $ 30 $ 200 $ 200 $ 200 $ 200 $ 200 $ 200 $ 1,200 Total Project Costs $ 205 $ 205 $ 205 $ 205 $ 205 205 $ 1,230 Project Funding Utility Revenues $ 205 205 $ 205 $ 205 $ 205 $ 205 $ 1,230 Total Project Funding 205 205 205 205 $ 205 205 1,230 PROJECT: CITY OF TUIL CAPITAL PROJECT SUMMARY 2025 to 2030 Nelsen/Longacres Ph II Project # 98741202h 'Project Manager Jo hulaHopkins Department Surface Wat? The proposed solution is to install a 48-inch stormwater pipe crossing underneath the Burlington Northern railroad tracks connecting to a previously installed interceptor east of the tracks. This 48-inch stormwater pipe will be constructed using trenchless techniques to minimize the impact to the operation of the railroad. This new pipe will provide drainage from the existing drainage ditch west of the tracks to the P-1 interceptor. Ownership, easement, and maintenance responsibility will be determined and/or verified prior to moving forward with this project. DESCRIPTION: JUSTIFICATION: STATUS Because of development and increased surface water runoff,`ftooding is occurring in the right-of-way and on private property. The design objectives are reduction of stormwater ponding and peak flow rate. The project is located within the Burlington Northern Santa Fe (BNSF) corridor, Coordinate project progression MAINTENANCE IMPACT: N/A COMMENT: ' N/A FINANCIAL (in thousands) Project Costs Construction 2025 2026 2027 2028 $ 1,100 2029 2030 Total Project Costs Project Funding Utility Revenues $ 1,100 $ 1,100 Total Project Funding $ 1,100 Beyond TOTAL $ $ 1,100 $ - $ 1,100 $ $ 1,100 $ - $ 1,100 PROJECT: Project Manager DESCRIPTION: CAPITAL PROJECT SU 2025 to 2030 P17 Pond and Southcenter Subarea Hydraulic Study Project # Mike Perfetti Department Surface a. Before confirming feasibility of decommissioning the P17 Pond and the P17 Pump Station to support a setback of the levee for habitat uplift, the City must ensure that the detention and conveyance capacity they provide can be provided elsewhere in the Southcenter subarea. The City will study hydraulics in the Southcenter subarea, including most of the P17 Basin and the interrelated portions of the Gilliam Creek basin, Green/Duwamish basin, and Johnson Creek basin to determine alternatives for providing the needed detention storage and discharge of stormwater runoff to the Green River. 72541205' The City is studying the feasibility of discontinuing use of the maintenance facility and selling the property. The King County Flood Control District may express an interest in purchasing:the property and setting back he levee,consistent with project LG-35 identified in the VVRIA 9 Salmon Recovery Plan approved on Februaryll,2021. STATUS: listed as a high priority in the 2024 Surface Water Comp Ptan MAINTENANCE IMPACT: No O&M costs associated with a study. CO FINANCIAL (in thousands) The levee adjacent to P17 Pond was shown by the Corps in its 2023 SQRA to have vutnerabititygiven its height, steepness, vegetation characteristics, and proneness to erosion to due water fluctuations in the pond. Project Costs Project Mgmt (Staff Time/Cost) Planning Contingency 2025 2026 2027 2028 2029 2030 Beyond TOTAL $ 20 $ 300 $ 30 Total Project Costs $ 175 175 $ 350 Project Funding Utility Revenues $ 175 $ 175 $ 350 Total Project Funding $ 175 175 $ 350 PROJECT: CAPITAL PROJECT SU 2025 to 2030 S 143rd Street Storm Drainage System Project Manager Joshua Hopkins DESCRIPTION: USTIFICATION: STATUS: Project # 98641222 Department Surface Water Design and construct closed pipe drainage system along S. 143rd Street and S. 143rd Place. Provide a WQ treatment manhole and a flap gate at the outlet of the drainage system. Convert existing drainage ditch, located on private property, to a bioswale. Provide asphalt overlay, curb and gutter, and sidewalks for S. 143rd Street. Provide asphalt overlay for S. 143rd Place. Longstanding drainage and flooding problem on ROW and private property along S 143rd St, east of Interurban Ave. Project Issue ID # 9 in 2013'Plan, first appeared in 2003 SWCP. Project may be eligible for grant funding from King County Flood Control District. New conveyance system wiU reduce ROW and private property flooding. Bioswale will treat stormwater runoff before it's routed to the Duwanish River. Flap gate will help prevent flooding when the Duwarnish River is at high stages. The project was identified in the 2003 Tukwila SWCP. The project sketch on the folio from the 2003 plan. The project cost was updated for the 2013 Surface Water Comprehensive Plan and has been escalated again for the 2024 SWCP using the construction cost index published by Engineering News -Record. The current ales tax rate has been used. Scope, hedute, and budget n d o be updated 1 undng ttocatin and Po en MAINTENANCE IMPACT: Seasonal WQ service of CB will be required. Couple hours per year. CO; ENT: FINANCIAL (in thousands wing page is excerpted t grant oppor ies Assumes that parking adjacent to existing ditch wit[ not be disturbed. Potential for LID/ND improvements are not included in estimated cost 2025 2026 2027 2028 2029 2030 Beyond TOTAL $ 60 $ 200 $ 200 $ 1,410 $ 1,870 $ 1,870 Project Costs Project Mgmt (Staff Time/Cost) Design Construction Mgmt. Construction $ 30 $ 200 $ - $ 30 $ - $ 200 $ 1,410 Total Project Costs Project Funding Utility Revenues $ 230 $ 230 $ 1,640 $ 1,640 Total Project Funding $ 230 $ 1,640 1,870 CITY OF TUICVI/I1 1, CAPITAL PROJECT SUMMARY 2025 to 2030 PROJECT: Ryan Way Pipe Rehabilitation Project Manager Joshua Hopkins DESCRIPTION: #US' FICATION• STATUS: Project # 92541202 Department Surface Water This project proposes to replace or repair all existing 12-in and 18-in diameter storm sewer pipes and catch basins within S Ryan Way in coordination with an eventual overlay or reconstruction. There is poor pipe condition along S Ryan Wayand there are assoelated drainage issues. Paving is needed. If brought down to the base of the road, stormwater standards wilt be triggered which includes the flow control threshotd.:Possible sotution would be funded by he Transportation funds. If t e Cit decides to construe requirements for flow control h MAINTENANCE IMPACT: N/A FINANCIAL (in thousands) y roadwayimprovements along S Ryan Way, this maytrigger stor d runoff treatment. This project does not address flow control tt at 2025 2026 2027 2028 2029 2030 Beyond TOTAL Project Costs Project Mgmt (Staff Time/Cost) Construction $ 25 $ 840 $ 25 $ 840 Total Project Costs $ 865 $ 865 Project Funding Utility Revenues $ 865 $ 865 Total Project Funding $ 865 865 PROJECT: CITY OF TUKWILA CAPITAL PROJECT SUMMARY: , 4y ,n ,eYwfi m ti, 2025 to 030 �x a ruN.4 S 146th St Pipe & 35th Ave S Drainage System Project# Project Manager Sherry Edquid. DESCRIPTION: IJUSTIFI STAT ATION: Department Surface Water 903412141 s Replace existing storm drainage system on S 146th St and provide new storm drainage system for 35th Ave S. Provide asphalt overlay and extruded asphalt curb for both streets. Reduce rightiwf-way nd private property flooding by increasing the capacity of the $torus drainage syste enance is. ani ing area during MAINTENANCE IMPACT: Expanded system will require additional maintenance. co FINANCIAL (in thousands This project was kient fed in the 2003 Surface Water Management Comprehensive Plan and again in the 2024 plan. 2025 2026 2027 2028 2029 2030 Beyond TOTAL Project Costs Project Mgmt (Staff Time/Cost) Design Construction Mgmt. Construction $ 30 $ 250 $ 45 $ - $ 160 $ 1,400 $ 75 $ 250 $ 160 $ 1,400 Total Project Costs $ 280 $ 1,605 1,885 Project Funding Utility Revenues $ 280 $ 1,605 Total Project Funding 280 $ 1,605 1,885 PROJECT: CITY OF TUI: 11/ILA CAPITAL PROJECT SUMMARY 2025 to 2030 Tukwila Parkway Gilliam Creek Outfalls Project Manager Mike Prfett► DESCRIPTION: JUSTIFICATION:' STA Department Surface Water Project # 91241205' The project expands the scope of CIP 91241205 in the City's 2021-2026 Capital Improvement Program and updates the costs. The existing 48-in diameter manhole will be replaced with an 84-in diameter manhole in Andover Park W just south of the intersection with Tukwila Parkway. A ftapgate will be installed on the outgoing pipe. A manhole will be constructed over the 30-in diameter pipe on the south side of Tukwila Parkway and a flapgate installed. As a part of this project, ownership of the pipe should be confirmed. If the pipe is currently privately owned, the ownership and maintenance should be transferred to the City. The project will also add a water quality treatment device. The addition of flapgates on the 48-in diameter and the 30-in.diameter storm pipes witTisotate the pipes rom the downstream 108-in diameter Washington State Department ;ofTransportation (WSDOT) culvert under the i-405 freeway to allow the City of Tukwila to inspect and maintain the 48-in diameter and the 30- in diameter storm pipes. This project relates the Gilliam C HydraulicStudy. eek Fish'. ier R movat Project a rett as the P-17/Southcenter MAINTENANCE IMPACT: costs to inspect and maintain 1 catch basin and 1 water quality biofittration media vault FINANCIAL (in thousands) 2025 2026 2027 2028 2029 2030 Beyond Area TOTAL Project Costs Project Mgmt (Staff Time/Cost) Design Construction Mgmt. Construction Contingency $ 15 $ 260 $ - $ - $ 30 $ 30 $ - $ 150 $ 950 $ 100 $ 45 $ 260 $ 150 $ 950 $ 130 Total Project Costs $ 305 $ 1,230 $ 1,535 Project Funding Utility Revenues $ 305 $ 1,230 $ 1,535 Total Project Funding $ 305 $ 1,230 1,535 PROJECT: CITY OFTUKILA CAPITAL PROJECT SUMMARY 2025 to 2030 Tukwila Pond Water Quality Improvement Project Manager Joshua Hopkins DESCRIPTION: STATUS: Department Project # 92541204 Su rface Water The project aims to allow Tukwila's Public Works Department to support water quality treatment for surface water runoff draining to the Tukwila Pond, as part of the Tukwila Pond Park Master Plan (Master Plan) improvements. The Parks and Recreation Department will carry out the implementation of the Master Plan, including hiring and managing consultants for design, permitting and construction negotiations, and leading discussions with private property owners. The Public Works Department will contribute funds to support the design and construction of stormwater runoff treatment facilities described in this fact sheet. The recommended water quality improvements are planned for construction during Phases 1 B through 6 in the period spanning 2024 to 2038, as specified in the Master Plan. The Tukwila Pond has high°phosphorus, turbidity, and high ternperattire under existing conditions. It is fed largely by groundwater during the summer and has additional input from precipitation and two nearby wales, which treat runoff from adjacent commercial properties. Groundwater and soils are likely contributing to nutrient loading of the pond, suggesting that even if water quality improves, it may remain high in nutrients. Additionally, there is limited treatment for surface runoff and piped stormwater entering the pond. The pond drains into the Green River either through Gilliam Creek or through pumped and piped conveyances. The Green River in this area is on the Washington State Department of Ecology's list of paired waters (303(d) list) for temperature, dissolved oxygen, and fecal. coliform. Project MAINTENANCE IMPACT: N/A FINANCIAL (in thousands ingent on Tukwila Pond n prefer red°att The Master Plan recommends further study to compare alternatives and determine the preferred option or I combination of options for the water quality treatment described above. The Public Works Department's Surface Water Program plans to support the study, engineering design and construction of the runoff :reatment facilities, w thin the larger effort to be implemented by the Parks and Recreation Department. 2025 2026 2027 2028 2029 2030 Beyond TOTAL Project Costs Project Mgmt (Staff Time/Cost) Design Construction Mgmt. Construction $ $ $ $ $ $ $ 30 $ 197 $ 100 $ 656 $ 30 $ 197 $ 100 $ 656 Total Project Costs 983 Project Funding Utility Revenues Total Project Funding 983 983 Appendix D Catch Basin alternative inspection protocol Alternative Catch Basin Inspection Protocol Section 5 Chapter 9 (S5.C9) of the NPDES Phase II Western Washington permit spells out the requirements for public and private stormwater management including inspections, maintenance and documentation. The City of Tukwila is required to "implement and document a program to regulate maintenance activities and to conduct maintenance activities" to prevent and reduce stormwater impacts on receiving waters within its jurisdiction. This chapter deals with the work directly related to the structures and pipes that convey floodwater away from roadways and properties where it is discharged to groundwater, wetlands, creeks, streams and ultimately the Green/Duwamish river. The minimum performance measures of S5.C9.a are: • Develop or Adopt and use a maintenance standard that is "as protective or more protective than" the Western Washington Stormwater Management Manual for Western Washington OR a Phase I jurisdictions equivalent manual. o The City uses the King County Surface Water Design manual and King County Site Management Plan to manage rights -of -way and City Properties. • Update the maintenance standard if needed to meet this permit. o The City follows the King County update process as timely as possible. • Inspections are required by S5.C9.b.i.b and actions to address maintenance needs should be taken on the timeline provided. o The City addresses maintenance need as prescribed and typically much more quickly than allowed, which is: Within 6 months for CBs, one (1) year for typical maintenance; two (2) years for maintenance that requires capital construction costing less than $25,000. The City of Tukwila conducts MS4 inspections using a combined approach allowed under S5.C9.c Maintenance of stormwater facilities owned or operated by the Permittee. The City is just over nine (9) square miles with significant topography changes within the lower WRIA 9 Green/Duwamish watershed (-430 sq. mi.) immediately upstream of the City of Seattle and the Lower Duwamish Waterway. To make good use of limited resources such as staff and equipment, and to meet Union preservation of available work, the City is divided into Five (5) "Maintenance Zones" which encompass up to two (2) square mites each and up to dozens of Ecology defined "circuits" draining to a single point. This divides the City into manageable districts that combine work of similar conditions, such as flat valley floors, or steep valley slopes, mostly residential or mostly commercial, to allow the crew to determine the type of equipment needed and prioritize the most vulnerable areas of drainage systems. Alternative Catch Basin Inspection Protocol 2024 Alternative Catch Basin Inspection Protocol To meet S5.C9.c.i the Operations and Maintenance Stormwater crew: • Inspects all Municipally Owned and Operated Stormwater Treatment and Flow controls once annually at a minimum. • Notes are taken on all inspections and actions to remedy maintenance conditions are logged into the CMMS Lucity©. • No reduction of inspection frequency is required. To meet S5.C9.c.ii the Operations and Maintenance division: • Conducts weather related inspections of critical infrastructure and land features including outfatls whenever rain exceeds the standard (24-hour, 10-year), typically crews are already engaged at the 2-year storm. • Take notes on all inspections and actions to remedy maintenance conditions which are logged into the CMMS Lucity©; • Repairs are conducted on an ability basis, whereby when staff are able, they repair the situation immediately, when unable, they report the condition to the CIP program for remedy in the Small Drainage CIP system to be repaired within two (2) years taking actions to minimize further damage until repair can be completed. To meet S5.C9.c.iii the Operations and Maintenance Stormwater division: • Cleans three (3) maintenance zones per year, totaling more than 5 square miles of service area, typically including more than 500 structures and dozens of Ecology defined circuits including maintenance at all outfatls. • Typically, this approach meets S5.C9.c.iii.c since most circuits within a Maintenance Zone are cleaned once during the permit term if not within 2 years. Additionally, to meet S5.C9.c.iii Environmental Compliance inspectors: • Inspect 25% of catch basins within Ecology defined circuits, reporting total sump depth in the circuit divided by the total sediment impacted sump depth as a percentage. • Once a single circuit reaches 60% of total sump depth impacted by sediment the circuit is reported to Operations and Maintenance for cleaning within the next 6 months, typically much sooner if not within weeks of the report. • Outfalts are also inspected during this effort with damages reported similarly. All City field staff are IDDE trained using the currently required Ecology manual, allowing staff to report when suspected Illicit Discharges are found in the MS4. Alternative Catch Basin Inspection Protocol 2024 Appendix E Training Plan City of Tukwila NPDES Training Delivery Training (records to be kept include dates, activities or course descriptions, and names and positions of staff in attendance.) "Qualified Personnel" means someone who has had training in the aspects of stormwater management for which they are responsible and are under the functional control of the Permittee. They may be staff members, contractors, or volunteers. O&M Staff Spill Hotline/Log Spills (Lucity/Sintel) SWPPP Inspections (Sintel) WQ/FC Annual and Storm related Inspections (Lucity) Catch Basin Circuit Basis inspections (Sintel/Lucity/GIS) Facilities Staff Property Inspections/Maintenance (Lucity/Sintel) SWPPP Inspections (Sintel) Fleet Staff Spill Kits on all Vehicles Spill Cabinets in Community SWPPP Inspections (Sintel) Parks/Golf Staff SWPPP inspections (Sintel) Property Drainage inspections/Maintenance Seek Golf Course NPDES information (Bellevue, Auburn, Seattle) Communications Staff Include Stormwater in Hazelnut or other Outreach efforts (e.g. Sewer, Solid Waste, Comprehensive Plans, Community Activities) Signage at Parks for Dog Waste (Dog bags?) Wraps for Traffic Cabinets (Stormwater Messaging) Mapping Staff Add all public properties to GIS/Lucity Add private systems to GIS Add size and pipe type to all conveyance and outfalls Correct Outfalls, WQ/FC structures, Show Private Recommendation to effectively deliver training to the full City Staff: Add NPDES Training to HR NeoGov by position: Administration Staff — Administrative Overview Permit Staff — KC Manual's MR2&3, CPESC (3rd party), Source Control Planning Inspection Staff — CESCL (3rd Party), ESA RRMP (County), CPII (APWA) Internal Training Packages developed: i. NPDES Overview (All Management/Staff) ii. IDDE S5.C5.f (All "municipal field" Staff) iii. Source Control S5.C8.b.v (EC Inspectors) iv. SWPPP Site Management (Pollution Prevention Team) v. Construction S5.C7.e (Construction Inspectors) vi. O&M S5.C8.e (Minkler and Parks/Golf) vii. Stormwater Management Manual (Plan Review staff) Appendix F Public Participation, Involvement and Stewardship opportunities Adopt a Spot, Green Tukwila Submission Date First Name Last Name Site Date Number of trash bags hours onsite. (2 vol. do 1 hr = Z hrs) Comments, issues, other volunteers that helped? Number of Photo volunteers? Tell us more about your work. Example: pulled ivy off 15 trees, mulched 100 sq feet, planted flowers Jan 10, 2025 Addison Hawk dhp Dec 31, 2024 15 30 Oct -Dec 2 Dec 6, 2024 Debbie G Southgate Park Dec 6, 2024 5 1 Lots of dumped garbage bags, plus part of a bedframe, flat -screen TV, and an electric scrub brush @1 Dec 6, 2024 Debbie G Riverton Park Dec 6, 2024 2 1 1 Oct 24, 2024 Debbie Gordon Southgate Park Oct 24, 2024 2 1 I love my new Grabber!! Oct 24, 2024 Debbie Gordon Riverton Park Oct 24, 2024 I love my new Grabber! , 1 Oct 11, 2024 Addison Hawk DHP Sep 2, 2024 15 30 trash collectJuly, Aug and Sept Sep 10, 2024 Debbie Gordon Southgate Park Sep 10, 2024 5 1.5 Reported additional garbage dumped off the road to SeeClickFix oads/Tukwila/2016745855790 66/6018222774481659998/SC Aug 16, 2024 6 recorded in CEDAR for volunteers Aug 6, 2024 Debbie Gordon Southgate Park Aug 6, 2024 4 1 City of Tukwila already picked everything up( Also reported garbage dumped off the side of 40th Jul 23, 2024 Debbie Gordon Riverton Park Jul 23, 2024 1 2 1 Spent most of my time watering goolie gardens Jul 19 , , 2024 14 OP lead city event- in CEDar Jun 25, 2024 Debbie Gordon Southgate Park Jun 25, 2024 5 1 1 May 22, 2024 DHP , 11 Olena lead group of 10 at DHP public event, recorded in CEDAR I May 7, 2024 King County Housing Authority Tukwila Pond Apr 24, 2024 25 20 FilmonBenlarn PheobeChristian MitcheilLa Roe AllanWong TracleFriedman Jamie Robbins ScotlPereival gethPearson Wish Olando Patrick MaIloy 1 10 Earth Month Event May 7, 2024 28 BECIJ 4/18/24 at restoration event that is recorded in CEDAR May 3, 2024 Debbie Gordon Southgate Park May 3, 2024 4 1.5 Apr 5, 2024 Addison DHP Mar 1, 2024 6 12 addison and husband picking up trash on weekends Q1 2 Mar 29, 2024 Debbie Gordon Southgate Park Mar 29, 2024 2 Cut ivy rings around 2 healthy large trees and 2 Mar 8, 2024 Debbie Gordon Southgate Park Mar 8, 2024 4 Mar 8, 2024 Debbie Gordon Riverton Park Mar 8, 2024 1 1 Feb 9, 2024 Debbie Gordon Riverton Park Feb 9, 2024 Jan 25, 2024 Debbie G Southgate Park 25, 2024 Jan 4 1 There is an abandoned campsite that needs to be cleaned up on the west side. Photo attached oads/Tukwila/2016745855790 66/5820411569215670192/20 240125_135126.jpg Jan 25, 2024 Olena Riverton Park Jan 25, 2024 1 1 Chag Sameach I 1 Had a great time rescuing a neglected, root bound, Jan 3, 2024 Nathan lynch Bicentennial Park, Green River Trail Dec 15, 2023 3 6 Jan 3, 2024 Addison DHP Dec 12, 2023 10 20 data entry for the year 2 Total Bags 175 135 Total Hours GREEN TUKWILA PARTNERSHIP 2024 Annual Report 2024 was a record breaking year. The partnership continues to build programing that educates the community while crews and volunteers restore the urban forest and green spaces in Tukwila. Thank you to all the Forest Stewards, Partner Organizations and volunteers that make this possible. Join Us 2024 Stats 6,294 Professional Crew Hours 2,317 Restoration Volunteer Hours 15o Litter Clean -Up Volunteer Hours 901 Trees Planted 2,587 Native Plants Installed 750 Ivy Survival Rings Cut, Saving Trees 433,572 sq ft Cleared & Weeded FAli®W US .Tukwilawa.gov/greentukwila 6=1.1)greentukwila