TagInterlocal Agreement(170)

This interlocal agreement between the Washington State Department of Transportation (WSDOT) and the City of SeaTac outlines a cooperative arrangement for road improvements on S. 204th Street between 32nd and 34th Avenues South, as part of the SR 509 Completion Project near Sea-Tac International Airport. WSDOT agreed to assign the construction work in that corridor to the City of SeaTac and reimburse the city up to $1,641,318 upon substantial completion. After construction, the City of SeaTac is responsible for maintaining all improvements, including sidewalks, lighting, and stormwater facilities.

The Des Moines Creek Basin Restoration Projects Interlocal Agreement (GCA-3921) is a cooperative agreement between the City of Des Moines, City of SeaTac, Port of Seattle, Washington State Department of Transportation, and King County to fund and manage several creek restoration projects. The projects aim to control stream flows, improve water quality and fish habitat, and address drainage and flooding problems in the Des Moines Creek Basin. The agreement also serves as part of the stormwater management strategy for the SR 509 highway extension, with costs and responsibilities shared among the participating agencies.

This interlocal agreement establishes a cooperative framework between King County, the City of Des Moines, the City of SeaTac, WSDOT, and the Port of Seattle to implement the Des Moines Creek Basin Plan. The parties agreed to jointly fund and manage the preparation of a Final Design Report, Financing Plan, and environmental permits for capital projects addressing stormwater runoff, flooding, fish habitat, and water quality in the Des Moines Creek Basin. WSDOT's participation was motivated in part by the need to reduce the impacts of surface water runoff from State Routes 509 and 99 and Interstate 5 on the surrounding natural resource system.

This Land Use Technical Report, prepared by Landrum & Brown for the Port of Seattle in January 2024, examines how near-term construction projects outlined in the Seattle-Tacoma International Airport Sustainable Airport Master Plan align with existing and planned land use regulations in surrounding communities. The report reviews local plans from cities including SeaTac, Des Moines, Burien, and Tukwila, as well as a 2018 Interlocal Agreement between the Port and the City of SeaTac, to assess potential land use impacts of the proposed airport expansion alternatives. It concludes by evaluating the consistency of the proposed action and a hybrid terminal option with applicable local and regional planning policies.

This April 2023 presentation by Erin Nelson outlines options for the Des Moines Creek Basin Committee as it prepares to renew its Interlocal Agreement (ILA), a cooperative arrangement among local jurisdictions managing the creek basin near Des Moines, Washington. The meeting agenda covers a review of past studies and committee accomplishments, a discussion of what has worked and what needs improvement, and a decision on workable paths forward. While focused on stormwater and creek basin management rather than airport noise policy directly, the Des Moines Creek basin is located adjacent to Sea-Tac Airport and its management is relevant to the broader environmental context of the surrounding area.

This April 2023 presentation by Erin Nelson outlines options for the Des Moines Creek Basin Committee moving forward, focusing on decisions to be included in the next Interlocal Agreement (ILA). The meeting agenda covers a review of past studies and committee accomplishments, discussion of what has worked and what needs improvement, and selection of workable options for the basin's future management. The document includes maps and imagery related to infrastructure features such as the Northwest Ponds, Tyee Pond, sediment traps, and flow bypass pipes within the Des Moines Creek watershed.

The City of Des Moines, WA considered an amendment to a consultant contract supporting a coordinated environmental review of the Port of Seattle's Sea-Tac Airport Sustainable Airport Master Plan (SAMP), a 20-year airport growth plan. The amendment adds $100,000 to the original $175,000 contract, extends its term to 2023, and shifts contract administration from SeaTac to Des Moines, with costs shared among Des Moines, Burien, Normandy Park, and SeaTac based on population. The consultant, now operating as Primacy Strategy Group LLC, assists the four cities in reviewing and responding to environmental documents and impacts related to the SAMP process under NEPA and SEPA.

At a March 9, 2021 City Council meeting, the City of SeaTac considered a motion to authorize an amendment to an Interlocal Agreement with King County to receive a $500,000 Conservation Future Tax Levy grant, matched equally by the City, for acquiring approximately 8 acres of surplus Washington State Department of Transportation land adjacent to Des Moines Creek Park. The acquisition aims to expand open space, improve trail access, add a new trailhead with educational amenities, and preserve forested land along a salmon-bearing stream. The City has been pursuing this land purchase since 2018 as part of its Parks, Recreation, and Open Space (PROS) Plan.

The Burien Airport Committee held a virtual meeting on October 20, 2020, to discuss issues related to Sea-Tac Airport's impact on surrounding communities. Key agenda items included comparing airport roundtables in other cities, reviewing next steps for the SeaTac Airport Stakeholder Advisory Round Table (StART), and examining a proposed University of Washington study on school air quality near the airport. The committee also discussed 2021 federal legislative priorities and received reports on meetings with congressional representatives Adam Smith and Rick Larsen.

The City of Burien, Washington maintained billing records for a joint legal consulting contract with Lockridge Grindal Nauen PLLP to review the Sea-Tac Airport Sustainable Airport Master Plan (SAMP). Four cities — Burien, Des Moines, Normandy Park, and SeaTac — shared the $175,000 contract cost based on their respective populations, at approximately $1.50 per capita. By January 2020, a total of $88,879.33 had been billed across eight invoices, leaving a remaining balance of $86,120.67.