TagInterlocal Agreement(74)

In December 2017, the Port of Seattle and the City of SeaTac approved a new ten-year Interlocal Agreement (ILA) to formalize their working relationship and address the overlapping responsibilities that arise from Sea-Tac Airport occupying over 40 percent of the city's land area. The agreement covers key issues such as public safety, traffic enforcement, land use, stormwater fees, and development permits, while aiming to reduce the potential for legal disputes between the two agencies. It builds on a partnership dating back to the city's incorporation in 1990 and replaces a prior agreement that was set to expire in early 2018.

This November 2017 City Council study session presentation outlines a proposed 2018 Interlocal Agreement (ILA) between the City of SeaTac and the Port of Seattle, which operates Seattle-Tacoma International Airport. Because Port properties make up 42% of SeaTac's total land area and the airport creates unique demands on city services, the two governments have used ILAs since 1997 to manage operational and authority issues. The proposed agreement, intended to replace the expiring February 2018 ILA, aims to improve efficiency, reduce costs, and avoid litigation through a mutually beneficial, comprehensive package of terms.

In a July 2017 letter, Seattle-Tacoma International Airport's Managing Director Lance Lyttle acknowledged concerns from the City of Des Moines regarding the airport's Concourse D Hardstand Holdroom project, confirming that no additional gates would be added until the Sustainable Airport Master Plan (SAMP) environmental review was completed. Following this, the cities of Burien, Des Moines, Normandy Park, and SeaTac entered into an Interlocal Agreement in March 2018 to jointly hire the consulting firm Lockridge Grindal Nauen PLLP for $175,000 to conduct an environmental review of the SAMP. Costs were shared among the four cities based on a per-capita funding rate of approximately $1.50, with Burien covering the largest share at roughly 43%.

The 2005 Interlocal Agreement (ILA-2), signed February 16, 2006, is a formal cooperative agreement between the City of SeaTac and the Port of Seattle governing a range of shared responsibilities related to Seattle-Tacoma International Airport. It covers topics including land use and zoning, surface water management, transportation, public safety, and noise policy, while also establishing financial commitments and dispute resolution procedures. The agreement builds on prior 2001 and 2004 interlocal agreements and sets out a framework for ongoing interagency cooperation on airport development and its impacts on the surrounding community.

This is Amendment No. 3 to a 2005 Interlocal Agreement between the Port of Seattle and the City of SeaTac, entered into on February 16, 2006, governing transportation planning and funding around Seattle-Tacoma International Airport. The amendment updates project management responsibilities and budget allocations for capital improvement projects, including the South Access roadway, SR 518 improvements, and the South Link Project on 28th Ave. S., funded through a local parking tax. It establishes rules for how parking tax revenues are divided among projects and outlines corrective actions if actual revenues fall short of forecasts.

A Port of Seattle resolution authorizing the Chief Executive Officer to execute version two of an Interlocal Agreement with the Cities of Des Moines and SeaTac, Washington State Department of Transportation and King County to fund, construct, operate and maintain capital projects necessary to implement the Des Moines Creek Basin Plan. The projects include construction

Interlocal Agreement establishing the Airport Communities Coalition (ACC) under the Interlocal Cooperation Act (RCW Chapter 39.34), signed by the cities of Normandy Park, Des Moines, Burien, Federal Way, and Tukwila, each a Washington Municipal Corporation. The agreement opposes construction of a third runway at Seattle-Tacoma International Airport, opposes increased air traffic at Boeing Field, seeks

Facsimile cover sheet dated 2-19-02 from Ray Hellwig, Washington State Department of Ecology Northwest Regional Office (Bellevue, WA), to Tom Young (AAG), transmitting 11 pages including a Port of Seattle memorandum dated February 7, 2002 and an Inter-local Agreement between State of Washington Department of Ecology and Port of Seattle for oversight of construction projects

Agreement effective December 14, 2001 between Port Of Seattle and City of SeaTac for development of Port-owned properties known as Borrow Area #3 (south of South 200th Street, west of 18th Avenue South) and Borrow Area #4 (north of South 200th Street, west and south of 18th Avenue South and South 196th Street). Resolves outstanding

A November 30, 1999 letter from Port of Seattle's Aviation Project Management Group to Seattle Public Utilities reports the fourth and final quarterly stormwater monitoring results for the Sea-Tac Airport North Employees' Parking Lot (NEPL). Testing of water samples collected throughout 1999 found pollutant levels—including metals, hydrocarbons, and suspended solids—well below Washington State residential water supply standards. Based on these results, the Port proposed ending the monitoring program and invited the City of Seattle to confer on whether further monitoring was warranted under their Interlocal Agreement.