COMMISSION 
AGENDA MEMORANDUM                        Item No.          8e 
ACTION ITEM                            Date of Meeting      October 25, 2022 

DATE:     October 17, 2022
TO:        Stephen P. Metruck, Executive Director 
FROM:    Eileen Francisco, Director, Aviation Project Management 
Laurel Dunphy, Director, Aviation Operations 
SUBJECT: Restroom Renovations Phase 5 Construction (CIP #800697) 
Amount of this request:              $13,858,000 
Total estimated project cost:         $61,692,000 
ACTION REQUESTED 
Request Commission authorization for the Executive Director to 1) advertise and award a major
works construction contract for the fifth phase of the Restroom Upgrades on Concourses B, C,
and D project at Seattle-Tacoma International Airport; 2) execute a Project Labor Agreement for
this project; and (3) use Port crews. The amount requested under this authorization is
$13,858,000 of an anticipated total project cost of $61,692,000.
EXECUTIVE SUMMARY
The public restrooms on Concourses B, C, and D, are old, outdated and overcrowded. When
complete the new restrooms created by this project will improve the passenger experience by
being brightly lit, featuring touch free faucets, soap dispensers and paper towel dispensers, and
larger, more accessible stalls. 
This is a five-phase project. The first three phases are complete, Phase 4 restroom construction
is nearing completion. This request is to construct the Phase 5 restrooms. Phase 5 will remodel
the remaining public restrooms on Concourses B, C and D and will incorporate adult changing
tables, nursing suite, service animal relief area and additional family restrooms. This project was
recently awarded a $10,000,000 grant from the Federal Aviation Administration (FAA) through
the Bipartisan Infrastructure Law (BIL) — Airport Terminal Program (ATP). Project Labor
Agreements (PLAs) have been used on past projects to reduce risk to operations impacts and
construction schedule delays caused by potential labor disputes. This project is planning to use a
project specific PLA which is awaiting approval by the FAA. 


Template revised January 10, 2019.

            COMMISSION AGENDA – Action Item No. _8e___                             Page 2 of 5
Meeting Date: October 25, 2022 
JUSTIFICATION
The public restrooms on Concourse B, C, and D, in addition to being old, have limited air
circulation and odors that have permeated the finishes that often result in passenger’s
dissatisfaction with terminal restrooms. Enlarging, renovating, and building new restrooms will
improve air circulation, reduce odors, and improve maintainability, accessibility, and passenger
experience. This project, with its increase in restroom size and number of fixtures, further
improves the passenger experience considering these new requirements. 
Diversity in Contracting 
This project is federally funded which requires the federal recipient to utilize U.S. Department of
Transportation’s certified Disadvantaged Business Enterprises (DBE) program. The project team
is working with the Diversity in Contracting Department in establishing the Federal DBE goal.
DETAILS 
Scope of Work
The project scope for Restrooms Phase 5 includes the renovation of (5) existing sets of restrooms
to reflect the latest Port Restroom Standards. The existing restrooms near Gates B3, C16, and
D11 are to be renovated to multi-fixture gendered specific (Women’s / Men’s) restrooms with
(2) adjacent single fixture (Family) restrooms. One of the single fixture restrooms at C16 will
include an adult changing table. 
The D3 existing restrooms will be converted to a series of single fixture (Family) restrooms. The
existing restrooms near Gate D1 will be converted to our first “Amenities Suite” which will include
a service animal relief area, Nursing Suite with adjoining Lactation Room and two single fixture
(Family) restrooms, with one of the restrooms to include an adult changing table. 
All the locations require renovated plumbing, HVAC, lighting, restroom fixtures, tile, flooring,
decorative tile, and miscellaneous finishes. 
Schedule
Activity 
Phase 5 Construction start                    2023 Quarter 2 
Phase 5 in-use date                           2024 Quarter 2 
Total Project Complete                       2024 Quarter 3 
Cost Breakdown                                     This Request          Total Project 
Design                                                           $0            $7,587,000 
Construction                                           $13,858,000           $54,105,000 
Total                                                        $13,858,000            $61,692,000 

Template revised June 27, 2019 (Diversity in Contracting).

            COMMISSION AGENDA – Action Item No. _8e___                             Page 3 of 5
Meeting Date: October 25, 2022 
ALTERNATIVES AND IMPLICATIONS CONSIDERED 
Alternative 1 – Do not proceed with Phase 5
Cost Implications: $ previously spent with $0 of new spending (design costs to-date of $1.5M
would be expensed) 
Pros:
(1)   No additional capital expenditures 
Cons:
(1)   Loss of $10M in FAA AIP grants 
(2)   Reduce business opportunities to DBE 
(3)   Reduce amenities to our customers 
(4)   Limited accessibility at Sea-Tac 
o  Fewer ambulatory stalls 
o  Loss of adult changing stations 
(5)   Maintainability and janitorial services would be limited 
(6)   $1.5M in design costs would need to be expensed 
This is not the recommended alternative. 
Alternative 2 – Proceed with Phase 5 
Cost Implications: $13,858,000 total project cost 
Pros:
(1)   Maximize FAA Grant Funding 
(2)   Provides business opportunities to DBE 
(3)   Expands customer amenities 
o    Mother’s Rooms 
o    Animal Relief Areas 
(4)   Improves accessibility at Sea-Tac 
o    Ambulatory stalls 
o    Adult changing tables 
(5)   Improved maintainability of restrooms, including janitorial services 
Cons:
(1)   Highest cost alternative 
This is the recommended alternative. 
FINANCIAL IMPLICATIONS 
The original estimate was developed in 2015. In 2021, $308,000 was transferred to the Airport
Art Pool budget. 

Template revised June 27, 2019 (Diversity in Contracting).

            COMMISSION AGENDA – Action Item No. _8e___                             Page 4 of 5
Meeting Date: October 25, 2022 
Cost Estimate/Authorization Summary              Capital        Expense           Total 
COST ESTIMATE 
Original estimate                                $11,180,000               $0     $11,180,000 
Previous changes – net                         $50,779,000         $41,000     $50,820,000 
Budget transfer to Art Pool (2021 Q1)              ($308,000)              0       ($308,000)
Revised estimate                               $61,651,000         $41,000     $61,692,000 
AUTHORIZATION 
Previous authorizations                         $47,793,000         $41,000     $47,834,000 
Current request for authorization               $13,858,000               $0     $13,858,000 
Total authorizations, including this request      $61,651,000         $41,000     $61,692,000 
Remaining amount to be authorized                     $0              $0              $0 
Annual Budget Status and Source of Funds 
This project, CIP C800697, was included in the 2022-2026 capital budget and plan of finance with
a budget of $61,651,000. The funding source would be revenue bonds, Airport Development
Fund (ADF) and grants. The total FAA grants is estimated at $21 million. 
Financial Analysis and Summary 
Project cost for analysis              $61,651,000 
Business Unit (BU)                  Terminal Building cost center 
Effect on business performance     NOI after depreciation will increase due to inclusion of
(NOI after depreciation)             capital (and operating) costs in airline rate base. 
IRR/NPV (if relevant)                N/A 
CPE Impact                       $0.10 in 2025 
Future Revenues and Expenses (Total cost of ownership) 
Aviation Maintenance anticipates minimal impacts to operating and maintenance costs, as a
result of the scope of work in Phase 5 of this project. 
ATTACHMENTS TO THIS REQUEST 
(1)   Presentation slides 
PREVIOUS COMMISSION ACTIONS OR BRIEFINGS
September 8, 2020 – Commission authorized additional budget and to advertise and execute
a major works contract for Phase 4. 
August 11, 2020 –Commission authorized the Executive Director to increase the authorized
spending by $350,000, of which $232,000 are COVID-19 related. 
July 29, 2020 – Commission notification for Phase 3 construction contract – cumulative
change orders exceeding 10% 

Template revised June 27, 2019 (Diversity in Contracting).

             COMMISSION AGENDA – Action Item No. _8e___                              Page 5 of 5 
Meeting Date: October 25, 2022 
May 21, 2020 – The Commission was notified of change orders exceeding 10% and 25% of
the original contract amount for Phase 2. 
September 24, 2019 – The Commission authorized execution of a construction contract for
Phase 3 of this project that was more than 10% over the engineers estimate and
authorized additional construction funds for $1,200,000. 
September 24, 2019 – Commissioners and Executive Director Metruck received an Executive
Response from Aviation Managing Director Lyttle regarding All-Gender Restrooms. 
September 12, 2019, Commissioners and Executive Director Metruck received an Executive
Response from Aviation Managing Director Lyttle. 
February 26, 2019 – The Commission was briefed by staff on a recommendation to move
forward with motion to develop a Seattle-Tacoma International Airport gender inclusive
restroom plan. 
October 23, 2018 – The Commission authorized construction of Phase 2 and Phase 3 of this
project for $8,969,000. 
October 23, 2018 – The Commission was briefed on the status of the motion to develop a
Seattle-Tacoma International Airport gender inclusive restroom plan. 
May 22, 2018 – The Commission heard a motion to develop a Seattle-Tacoma International
Airport gender inclusive restroom plan. 
September 12, 2017 – The Commission authorized construction of Phase 1 of this project for
$2,536,000 
July 12, 2016 – The Commission authorized the design for $5,087,000. 










Template revised June 27, 2019 (Diversity in Contracting).