COMMISSION                                                8o 
AGENDA MEMORANDUM                       Item No. 
ACTION ITEM                            Date of Meeting:      December 13, 2022 
DATE:     January 27, 2022
TO:        Stephen P. Metruck, Executive Director 
FROM:    Dave Soike, Chief Operating Officer 
SUBJECT:  Request for Authorization for Aircraft Gate and Baggage Conveyor Safety Improvements,
and Extension of Staff Coverage through 2023 (CIPs - #C800583, C800781, C800836) 

Amount of this request:              $10 Million 
Total estimated project cost:       $996,645,000 
ACTION REQUESTED 
Request Authorization for the Executive Director to Design, Bid, and Construct International 
Arrivals Facility (IAF) Aircraft Gate and Baggage Conveyor Safety Access Improvements utilizing external
and port crews; and extend staff coverage as necessary through 2023. The estimated cost is $10 million. 
This increases the program authorization by one percent from $986,645,000 to $996,645,000. 
EXECUTIVE SUMMARY 
The IAF construction work has not been completed by the milestone dates set forth in the
contract, and some of the work has not been completed correctly. The project was anticipated 
to be complete in early June 2020 and now is expected to reach contractual substantial
completion in Q1 2023 and full completion at approximately mid-year.
Several of the new gate positions do not accommodate wide-body aircraft, which was a
requirement of the contract, so  the  Port needs to make adjustments to certain gate
appurtenances such as jet-bridges, fire and fuel hydrants, bollards, stairways, etc. in order to
mitigate our damages and increase SEA’s ability to accommodate mixes of larger aircraft due to
current gating needs. For safety reasons, staff propose to add catwalks over busy drive lanes and
alongside certain difficult-to-access ceiling-hung catwalk sections. Additionally, the Port IAF 
project team did not anticipate working into 2023 to assist in completing the project. This request
provides necessary construction inspectors, resident engineers, construction managers, project
managers, engineering specialty consultants, security personnel, operational personnel, etc. to
manage work around aircraft gates, monitor and review contractor submittals, perform quality
checks, and manage the program.
JUSTIFICATION 
This authorization is necessary to (a) mitigate the Port’s damages due to the contractor’s nonconforming
work; (b) bring the finished work closer to the contractual expectations of service
size and safety; and (c) ensure continued port staff coverage while the prime design-builder
completes their work.

             COMMISSION AGENDA – Action Item No. 8o                                  Page 2 of 5 
Meeting Date: December 13, 2022 
FINANCIAL IMPLICATIONS 
Cost Estimate/Authorization Summary         Capital        Expense         Total 
COST ESTIMATE 
Cost estimate on September 15, 2018               $955,445,000      $13,000,000     $968,445,000 
January 2021 approval – staff extension               $18,200,000                $0      $18,200,000 
Current Change                                   $10,000,000               $0      $10,000,000 
Revised estimate                                   $983,645,000      $13,000,000     $996,645,000 

AUTHORIZATION 
Previous authorizations                              $973,645,000      $13,000,000     $986,645,000 
Current request for authorization                    $10,000,000                $0      $10,000,000 
Total authorizations, including this request           $983,645,000       $13,000,000     $996,645,000 
This program cost includes the following categories: 
Description                                   CIP #            Cost 
International Arrivals Facility - Capital         C800583       $959,645,000 
International Arrivals Facility - Expense         N/A           $13,000,000 
SSAT Narrow Body Gates - Capital           C800781         $5,500,000 
Outbound Baggage - Capital                C800836       $18,500,000 
Total                                                           $996,645,000 
ATTACHMENTS TO THIS REQUEST 
None 
PREVIOUS COMMISSION ACTIONS OR BRIEFINGS 
1.  January 12, 2021 – The Commission authorized an $18.2M to extend the Port project
team for 13 months supporting project delays. 
2.  October 13, 2020 – IAF Progress
January 28, 2020 – IAF Briefing 
3.  June 25, 2019 – Progress Briefing 
4.  February 26, 2019 – Progress Briefing 
5.  September 25, 2018 - Authorized a Guaranteed Maximum Price (GMP) 
6.  September 11, 2018 – The Commission received a comprehensive briefing regarding the
program and Guaranteed Maximum Price negotiated with the design-builder. 
7.  March 27, 2018 – The Commission was briefed on IAF progress. 
8.  November 14, 2017 – The Commission was briefed on 3rd quarter 2017 progress. 
9.  August 15, 2017 – The Commission authorized the balance of IAF funding in a joint 
request with the NSAT project. 
10. March 28, 2017 - The Commission authorized additional IAF funding. 
11. October 11, 2016 – The Commission authorized IAF to add balance of Phase 2 for

             COMMISSION AGENDA – Action Item No. 8o                                  Page 3 of 5 
Meeting Date: December 13, 2022 
accelerated execution. 
12. September 27, 2016 – The Commission was briefed on IAF reconsidering phasing and project
update. 
13. September 13, 2016 – The Commission authorized IAF FAA reimbursement agreement. 
14. July 12, 2016 – The Commission authorized IAF to add Phase 2 scope to meet continuing 
rapid growth. 
15. June 28, 2016 – The Commission was briefed on two additional international aircraft 
gates at IAF to meet continuing rapid growth briefing. 
16. May 17, 2016 – The Commission was briefed on Plan of Finance 
update. April 26, 2016 – The Commission was briefed on IAF 1Q2016
update. 
17. February 9, 2016 - The Commission was briefed on IAF 4Q2015 update. 
18. December 8, 2015 – IAF Guaranteed Maximum Price (GMP) Development Period 
authorization (presented in combination with NSAT authorization request). 
19. November 10, 2015 – The Commission was briefed on IAF update. 
20. August 11, 2015 – The Commission lead a special meeting, roundtable with airline
representatives. 
21. July 28, 2015 – The Commission lead an IAF 
forum. July 14, 2015 – The Commission lead an
IAF forum. 
22. June 23, 2015 – The Commission authorized execution of the IAF Design-Build Contract. 
May 26, 2015 – The Commission approved IAF preliminary funding plan motion. 
23. April 28, 2015 – The Commission authorized a service agreement for Commissioning
Services. April 28, 2015 – The Commission authorized execution of a lease agreement
with SEATAC VENTURES 2010 LLC for IAF program management office space near Sea-Tac
International Airport. February 24, 2015 – The Commission authorized a service 
agreement for IAF consultant program leader. 
24. January 27, 2015 – The Commission was briefed on IAF funding plan. 
25. January 27, 2015 – The Commission approved IAF request for proposals 
advertisement. January 13, 2015 – The Commission was briefed on IAF update. 
26. December 2, 2014 – The Commission was briefed on IAF scope and budget update.
October 28, 2014 – The Commission was briefed on IAF 3Q2014 update. 
27. August 19, 2014 – The Commission was briefed on IAF 2Q2014 update. 
28. August 5, 2014 – The Commission authorized IAF request for qualifications advertisement. 
July 22, 2014 – The Commission was briefed on IAF progress. 
29. June 10, 2014 – The Commission was briefed on IAF 1Q2014 update. May 6, 2014 – The
Commission was briefed on IAF project delivery. 
30. April 22, 2014 – The Commission was briefed on capital program.
March 11, 2014 – The Commission authorized IAF master 
planning. February 25, 2014 – The Commission was briefed on
IAF program. 
31. November 19, 2013 – The Commission authorized IAF construction management, testing 
and inspection; surveying and locating and safety service agreements. 
32. July 23, 2013 – The Commission authorized IAF project and program support; and 
price factor design-build methodology. 
33. July 9, 2013 – The Commission was briefed on IAF. 
34. July 9, 2013 – The Commission was briefed on alternative public works 
contracting. April 9, 2013 – The Commission was briefed on IAF.

             COMMISSION AGENDA – Action Item No. 8o                                  Page 4 of 5 
Meeting Date: December 13, 2022 
35. June 26, 2012 – The Commission was briefed on airport terminal development 
challenges at Seattle-Tacoma International Airport. 
36. June 14, 2011 – The Commission was briefed on international air service growth and 
future facility.

             COMMISSION AGENDA – Action Item No. 8o                                  Page 5 of 5 
Meeting Date: December 13, 2022 
37. February 2, 2010 – The Commission was briefed on South Satellite passenger growth 
and facility considerations, Delta’s proposed airline lounge and other possible future 
aviation projects.