COMMISSION 
AGENDA MEMORANDUM                        Item No.          10b 
ACTION ITEM                            Date of Meeting      March 22, 2022 

DATE:     March 11, 2022 
TO:        Stephen P. Metruck, Executive Director 
FROM:    Wendy Reiter, Director Aviation Security 
Wayne Grotheer, Director, Aviation Project Management 
SUBJECT:  Checkpoint 1 Relocation Construction Authorization (CIP #C801093) 
Amount of this request:              $26,700,000 
Total estimated project cost:         $37,000,000 
ACTION REQUESTED 
Request Commission authorization for the Executive Director to (1) advertise and award a
major works construction contract for the relocation of Checkpoint 1 at Seattle-Tacoma
International Airport, include a Project Labor Agreement, and (2) use Port crews for support
activities. The amount of this request is $26,700,000 of a total estimated project cost of
$37,000,000. 
EXECUTIVE SUMMARY 
This project is needed to improve the level of service for airline passenger security screening at
the Airport. The Airport currently has five checkpoints spread across the Ticketing Level. The
current Checkpoint 1 located at the south end of the Ticketing Level is undersized, has an
inefficient configuration, and will not be able to accommodate newer screening technologies 
proposed by the Transportation Security Administration (TSA). With the current conditions,
Checkpoint 1 is only suitable for pre-check passengers, which limits the airport's overall
screening flexibility and effectiveness. The relocation of Checkpoint 1 would enable other Main
Terminal checkpoint and check-in improvements as part of the Main Terminal Optimization
Plan (MTOP). 
This project will relocate Checkpoint 1 from its current location on the Ticketing Level to the
lower Baggage Claim Level to provide additional screening throughput flexibility and a more
adequate level of service for our passengers. Along with supporting upgrades, the project will
create new queuing, travel document verifications, and additional security screening lanes
which will accommodate future TSA technology. 

Template revised January 10, 2019.

COMMISSION AGENDA  Action Item No. _10b__                              Page 2 of 5 
Meeting Date: March 22, 2022 
This project was reviewed and approved by the airport airlines though a majority-in-interest
(MII) vote in 2020. 
JUSTIFICATION 
Inability to accommodate efficient technology and adequate queuing for passenger security
processing at Checkpoint 1 will result in continued deterioration of passenger level of service in
the Main Terminal as demand increases. Passenger security screening  at the Airport is
experiencing stints of systemic failure, resulting in excessive wait times and impacts to other
terminal processes. Without implementation of additional security screening capacity and
efficiency,  it  is  distinctly  possible  that  queues  will  become  unmanageable,  resulting  in
passengers experiencing more and more missed flights.
Relocation of Checkpoint 1 to the lower level would provide additional processing capacity and
operation area to improve passenger level of service. An enhanced Checkpoint 1 would provide
additional compliant screening lanes, TSA support spaces, adequate queuing to meet peak
demand, and flexibility to accommodate current and evolving screening protocols. This lowerlevel
checkpoint will serve all passengers but will primarily benefit passengers using the South
Satellite Concourse and passengers dropped off on the arrivals curb during peak departure
periods, helping to mitigate curb congestion. It also introduces new opportunities for demand
management, which are being considered in other initiatives. Passengers using Checkpoint 1
would have direct access to the South Satellite Transit System platform and ultimately any gate. 
Diversity in Contracting 
There will be a 14% women and minority business enterprise (WMBE) aspirational goal for the
construction contract. 
DETAILS 
This project will relocate the existing Checkpoint 1 from its current location on the Ticketing
Level to a new expanded location on the Baggage Claim Level to increase passenger processing
capacity. In addition, the project scope creates a "meeter/greeter" area and circulation in the
area for internationally arriving passengers and integration of new public art displays to
enhance pre-security civic space at SEA. 
Scope of Work 
The scope includes the following elements: 
(1)   New security lanes designed to current TSA standards 
(2)   Demising of security checkpoint from the rest of the Bag Claim level and Gina Marie
Lindsey (GML) Arrivals Hall 
(3)   Removal of Bag Claim 1 device 
(4)   Expansion of glass wall around the GML Hall and the Grand Staircase 
(5)   Structural upgrades to support new glass walls 
(6)   Removal of architectural elements to increase circulation in the GML Hall 

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

COMMISSION AGENDA  Action Item No. _10b__                              Page 3 of 5 
Meeting Date: March 22, 2022 
(7)   Upgrades to the controls of the existing air handler serving the GML Hall 
(8)   New terrazzo flooring in the GML Hall area 
(9)   Creation of a new curved bank of art display cases with lighting 
(10)   Provide code compliant egress from the new Checkpoint 
(11)   Vertical Circulation Upgrades to four elevators including one full replacement 
(12)   Deaccession of The Clearing art wall 
(13)   New flight information displays 
(14)   Updated wayfinding signage 
(15)   Demolition and closure of existing Checkpoint 1 on the ticketing level 
(16)   Relocation of the United Baggage Service Office 
Schedule 
Activity 
Construction start                             2022 Quarter 4 
In-use date                                    2024 Quarter 1 
Cost Breakdown                                     This Request           Total Project 
Design                                                           $0             $5,900,000 
Long lead time equipment purchase                      ($600,000)            $1,900,000 
Construction                                           $27,300,000            $29,200,000 
Total                                                        $26,700,000             $37,000,000 
ALTERNATIVES AND IMPLICATIONS CONSIDERED 
Alternative 1  Keep Checkpoint 1 on the Ticketing Level as-is 
Cost Implications: $2.8M 
Pros: 
(1)    No capital investment required. 
(2)   All checkpoints will remain on ticketing. Less confusion for the traveling public. 
Cons: 
(1)   Does not increase checkpoint capacity. 
(2)   Current checkpoint will continue to only screen pre-check travelers. 
This is not the recommended alternative. 
Alternative 2  Relocation Checkpoint 1 to Bag Claim Level 
Cost Implications: $37,000,000 
Pros: 
(1)   Creates ideal amount of space for queuing, document check, screening, and recomposure.

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

COMMISSION AGENDA  Action Item No. _10b__                              Page 4 of 5 
Meeting Date: March 22, 2022 
(2)   Provides additional area for passenger screening without expanding the building
footprint. 
(3)   Locating a passenger screening checkpoint on a different level than existing
checkpoints and with additional lanes is likely to provide a moderate benefit to the
TSA staffing formula and may result in additional Transportation Security Officers
allocated to the Airport. 
(4)   Existing Checkpoint 1 location can remain operational during a portion of construction
activities. 
(5)   Allows other portions of the MTOP program to proceed without having to reduce
capacity (based on the current airport wide passenger screening capacity). 
Cons: 
(1)   Baggage claim level is not a typical location for passenger screening and wayfinding to
this checkpoint will likely be challenging to resolve. 
(2)   Requires additional TSA staff. 
This is the recommended alternative. 
FINANCIAL IMPLICATIONS 
Cost Estimate/Authorization Summary              Capital        Expense           Total 
COST ESTIMATE 
Original estimate                                $40,000,000               $0     $40,000,000 
Previous changes - net                          ($2,500,000)      $2,500,000               $0 
Current change                               ($2,400,000)      ($600,000)    ($3,000,000) 
Revised estimate                              $35,100,000      $1,900,000    $37,000,000 
AUTHORIZATION 
Previous authorizations                          $7,800,000      $2,500,000     $10,300,000 
Current request for authorization               $27,300,000      ($600,000)     $26,700,000 
Total authorizations, including this request      $35,100,000      $1,900,000     $37,000,000 
Remaining amount to be authorized                    $0             $0             $0 
Annual Budget Status and Source of Funds 
This CIP C801093 Checkpoint 1 Relocation was included in the 2022-2026 capital budget and
plan of finance with a budget of $40,000,000. A capital budget decrease of $4,900,000 was
transferred to the Aeronautical Reserve CIP (C800753) resulting in zero net change to the
Aviation capital budget. Revised budget includes a transfer of scope from Airline Realignment
for the build-out of the United Baggage Service Office. The TSA screening equipment would be
treated as public expense and budgeted in the operating budget. The funding source will be the
Airport Development Fund (ADF) and revenue bonds. 

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

COMMISSION AGENDA  Action Item No. _10b__                              Page 5 of 5 
Meeting Date: March 22, 2022 
Financial Analysis and Summary 
Project cost for analysis              $37,000,000 
Business Unit (BU)                  Terminal Building 
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                       $.014 in 2025 
Future Revenues and Expenses (Total cost of ownership) 
While this security checkpoint has been designed to the most current TSA standards, and thus
could accommodate the newest technology, there are no plans in place today to replace
security equipment. 
ATTACHMENTS TO THIS REQUEST 
(1)   Presentation slides 
PREVIOUS COMMISSION ACTIONS OR BRIEFINGS 
October 22, 2019  The Commission authorized design of the project, use of Port crews for
design support and enabling construction activities, and purchase of owner-supplied
security screening equipment. 
July 23, 2019  The Commission was briefed on the Main Terminal Optimization Plan 









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