COMMISSION 
AGENDA MEMORANDUM                        Item No.          6d 
ACTION ITEM                            Date of Meeting     November 28, 2017 
DATE:     November 16, 2017 
TO:        Dave Soike, Interim Executive Director 
FROM:    Lance Lyttle, Managing Director, Aviation Division 
Clare Gallagher, Director, Capital Project Delivery, Public Affairs 
SUBJECT:  First Reading of Resolution No. 3741, Port of Seattle and City of SeaTac 2018
Interlocal Agreement. 
ACTION REQUESTED 
Request First Reading of Resolution No. 3741, a resolution of the Port of Seattle Commission
executing an Interlocal Agreement with the City of SeaTac. 
EXECUTIVE SUMMARY 
The purpose of this Resolution is to enact an Interlocal Agreement (ILA) between the Port of
Seattle and the City of SeaTac to address respective operational and authority issues that could
be anticipated to arise with regard to the operation of the airport and related facilities. The
Agreement is intended to be a comprehensive and cohesive package of elements for mutual
value to both the Port and the City, and a commitment to successful partnership, providing
predictability and consistency for activities between the Port and the City. Each element
reflects a negotiated outcome between Port and City positions, for overall benefit. 
The current ILA between the Port and the City of SeaTac will expire early in 2018. Adopting the
new ILA continues a practice first established in 1997 between the Port and the City. 
The new ILA continues the model of the current ILA by addressing land use and development
regulations to serve the interests of both the Port and the City; delegation of building
permitting   authority   by   the   City   to   the   Port,   attendant   responsibilities   and
documentation/system needs between the Port and the City; and traffic planning between the
Port and the City, including support of the City's expected Neighborhood Parking Program. The
proposed ILA also addresses storm water management, environmental review and public
safety. The framework section, addresses the term of the Agreement, the role of the Joint
Advisory Committee, the amendment process, and use of dispute resolution. 
JUSTIFICATION 
As municipal corporations, the Port of Seattle and the City of SeaTac each have statutory
authority  to  address  common  subjects  such  as  comprehensive  planning,  land  use,

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COMMISSION AGENDA  Action Item No. _6d_                                Page 2 of 3 
Meeting Date: November 28, 2017 
transportation, surface water management, critical areas, public safety, and other matters.
Both parties are governed by the State Environmental Policy Act (SEPA) and have lead agency
authority to the extent provided in the SEPA rules. 
These authorities come into particular focus through the Port ownership and operation of 
Seattle-Tacoma International Airport (Sea-Tac Airport), which is located primarily within the
SeaTac City limits. 
Following the City's incorporation in 1995,the Port and the City have entered into Interlocal
Agreements to jointly establish a mutual and cooperative system for exercising their respective
jurisdictional authority to avoid disputes or potential claims and to obtain fair and equitable
resolution of any potential disputes or claims. 
This resolution follows  previous Interlocal Agreements, which are as follows: Interlocal
Agreement I dated September 4, 1997, along with Amendment 1 dated December 14, 1999,
Amendment 2 dated December 15, 1999, Amendment 3 dated December 5, 2000, Amendment
4  dated December 26, 2001;  and Interlocal Agreement II dated February 16, 2006, and
Amendment 1 dated December 22, 2015. 

DETAILS 
The purpose of this ILA is to jointly establish a mutual and cooperative system to exercise
respective jurisdictional authority and avoid disputes between the Port and the City of SeaTac.
The use of an ILA recognizes that the City and the Port have a unique relationship and both
Parties' benefit from partnership, transparency and collaboration around the operation of Sea-
Tac Airport, which is an essential public facility under state law, and the ninth-busiest airport in
the national system of airports in the U.S.  Having a negotiated agreement  provides
transparency, predictability and consistency and significantly reduces the potential for litigation
between the Port and the City. 
Foundational work for the new ILA began in 2016 with the Guiding Principles providing a
framework for the upcoming negotiations. Following this, staff from the City of SeaTac and
Port of Seattle began active negotiations in January 2017. Work teams, along with City and Port
executives, completed language for all sections of the agreement, and the Joint Advisory
Committee  finalized negotiations for the proposed agreement in preparation for  public
briefings and adoption. 
The ILA  consists of seven Chapters: the Preamble, General P rovisions, Land Use &
Development, Permitting & Inspections, Transportation, Environmental Regulations, and Public
Safety & General Services. 
New elements contained within this ILA include a boundary map to delineate delegated permit
authority, a process for the Port to support City business license compliance, and a fee
structure to support the integration of Port permitting into the City's established system. The
proposed ILA also includes new fees for service, including permit fees, and financial support for

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COMMISSION AGENDA  Action Item No. _6d_                                Page 3 of 3 
Meeting Date: November 28, 2017 
the City's General Fund for public safety and traffic enforcement.  Additionally,  the ILA
addresses transportation impact fees, and surface water management fees for Port-owned
properties. 
ATTACHMENTS TO THIS REQUEST 
(1)   Draft Resolution No. 3741 Port of Seattle City of SeaTac 2018 Interlocal Agreement 
PREVIOUS COMMISSION ACTIONS OR BRIEFINGS 
November 14, 2017  The Commission was briefed on the negotiations and status of the
proposed 2018 Interlocal Agreement. 














Template revised September 22, 2016; format updates October 19, 2016.