• 2018-01-01

    2018 Interlocal Agreement: Port Of Seattle and City of SeaTac

    The 2018 Interlocal Agreement is a formal cooperation agreement between the Port of Seattle and the City of SeaTac governing how the two entities work together on land use, transportation, permitting, and development standards around Seattle-Tacoma International Airport. It establishes rules for zoning, airport activity areas, building permits, traffic impacts, and financial contributions, while also setting up processes for resolving disputes and coordinating on shared legislative priorities. The agreement aims to balance the airport's operational needs with the interests of the surrounding SeaTac community.
  • 2018-01-01

    2018 Interlocal Agreement between City of SeaTac & Port Of Seattle

    The 2018 Interlocal Agreement between the City of SeaTac and the Port of Seattle establishes a cooperative framework governing how Seattle-Tacoma International Airport operates within city boundaries, covering land use, building permits, environmental regulations, transportation, and public safety. The agreement, negotiated throughout 2017, includes provisions for storm water management fees, traffic impact fees, and an annual $1.4 million Port contribution to the City for community relief and public safety services. It also defines roles for environmental review under SEPA, including responsibilities related to noise impacts and aviation hazards affecting neighboring residents and businesses.
  • 2017-12-24

    SeaTac ILA Thoughts and Insight

    Peter Kwon is a Councilmember for the City Of SeaTac
  • 2018 ILA Between the City of SeaTac and the Port of Seattle

    Please click on the links below to read the desired historical documents. 2018 City/Port ILA Approved – Joint News Release 12.13.17 ILA Executive Summary 2018 City/Port ILA
  • 2017-12-13

    Port Of Seattle and City of SeaTac approve Interlocal Agreement as partnership for mutual success

    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.
  • 2017-11-28

    Proposed 2018 City/Port Interlocal Agreement

    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.
  • 2017-07-26

    Letter from Port Of Seattle to Mayor Pina regarding Concourse D Hardstand Holdroom and SAMP

    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%.
  • 2006-02-16

    SeaTac 2005 Interlocal Agreement (ILA-2)

    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.
  • 2006-02-16

    Amendment No. 3 to Port Of Seattle and City of SeaTac 2005 Interlocal Agreement (ILA-2)

    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.
  • 2004-04-19

    Resolution No. 3523 – Des Moines Creek Basin Plan Interlocal Agreement V2

    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