8h. Memo

2023 Airfield Projects

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

DATE:     October 18, 2022 
TO:        Stephen P. Metruck, Executive Director 
FROM:    Eileen Francisco, Director Aviation Project Management 
Laurel Dunphy, Director Airport Operations
Matt Breed, ICT Chief Information Officer 
SUBJECT:  2023 Airfield Projects (CIP# C800930, C801177, C800844, C801237, C801171) 
Amount of this request:              $67,153,000 
Total estimated cost of projects:    $255,945,000 
ACTION REQUESTED 
Request Commission authorization for the Executive Director to (1) advertise, execute two
separate construction contracts, and transfer budget/authorization, as necessary, among the
2023 Airfield Projects; (2) procure long lead items; (3) include a Project Labor Agreement for both
contracts; (4) authorize use of Port crews for abatement work; (5) increase the budget for the
Perimeter Intrusion Detection System Program by $5,400,000 for a total project budget of
$34,045,000; and (6) increase the budget for the Secured Area Vehicle Checkpoint Project by
$400,000 for a total project budget of $4,700,000.
The amount of this authorization request is $67,153,000. The total estimated cost for all projects 
included in this authorization is $255,945,000.

EXECUTIVE SUMMARY 
These two construction contracts are comprised of multiple interdependent Capital Improvement
Projects  (CIP).  These  projects  have  overlapping  work  areas  and  design  functionality,
interdependent operational impacts, and share 2023 schedule milestones. As such they were
planned, designed, and phased to be delivered concurrently for purposes of Airfield safety,
efficiency, and minimization of operational impacts. Construction Contract #1 encompasses
federally funded pavement and utility infrastructure while Construction Contract #2 consist of all
other airfield project work in 2023. 


Template revised January 10, 2019.

             COMMISSION AGENDA – Action Item No. 8h                                 Page 2 of 13 
Meeting Date: October 25, 2022 
The below table details the CIPs and corresponding authorizations requested. The total estimated
project cost for each CIP is also included. Total authorizations to date for each of these CIP is
included in the Financial Implications section of this memo.
CIP Name/#                                 Amount of this Request   Total Estimated
Project Cost 
2021-2025 Airfield Pavement and Supporting     $27,700,000              $153,500,000 
Infrastructure Replacement Program C800930 
Airfield Utility Improvements C801177            $4,600,000                $46,200,000 
Perimeter Intrusion Detection System C800844   $23,200,000              $34,045,000 
Snow Storage Expansion C801171               $7,553,000               $17,500,000 
Secured Area Vehicle Checkpoint Project         $4,100,000                $4,700,000 
C801237 
Total                                               $67,153,000               $255,945,000 

JUSTIFICATION 
The collection of projects being co-delivered via the 2023 Airfield Construction Contracts consist
of a variety of physically and functionally interdependent Capital Improvements designed to
renew and replace failing infrastructure, ensure continued operational safety and security, and
meet SEA’s regulatory requirements. The purpose of each project (CIP) is summarized below:
• The 2021-2025 Airfield Pavement and Supporting Infrastructure Replacement Program is
an ongoing program of airfield pavement replacement and is required to provide safe and
efficient conditions for aircraft operations and meet Federal Aviation Administration (FAA)
requirements. 
• Airfield Utility Improvement (AUI) is an ongoing project to replace aging, failing, and over-
capacity utility systems serving the existing terminal and apron areas.
• The Perimeter Intrusion Detection System (PIDS) project will enhance the  airport
perimeter security to ensure public safety and improve operational efficiencies through
use of technology and automation. PIDS will also provide power and communication
infrastructure in currently undeveloped areas around the airport security perimeter. The
additional budget ask is driven by the following: 
o  Design evolution and additional scope items 
o  Integration of Utility Master Plan elements 
o  Department of Revenue ruling 
o  Construction inflation 
• The Snow Storage Expansion project increases snow storage capacity which will meet the 
operational and FAA certification needs, based on historical snow events. Snow storage
meltwater will flow to the Industrial Wastewater System (IWS), meeting regulatory
requirements. 

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

             COMMISSION AGENDA – Action Item No. 8h                                 Page 3 of 13 
Meeting Date: October 25, 2022 
The Secured Area Vehicle Checkpoints Project (SAVCP) will provide the infrastructure and
equipment required to support the overall security posture at the airport. The two vehicle
checkpoints will provide the bookends that will secure the terminal area. The additional
budget ask is primarily driven by design evolution. 
Diversity in Contracting 
The project staff, in coordination with the Diversity in Contracting Department, have set goals for
both contracts. Airfield Contract #1 is federally funded work and will include an 8% Disadvantaged
Business Enterprises (DBE) goal. Contract #2 is not federally funded and as such will include a 14%
Woman and Minority Business Enterprise (WMBE) aspirational goal. These goals are based upon
the projects’ scopes of work, and baseline availability of certified DBE and WMBE businesses to
perform the work under the two separate contracts.
DETAILS 
These projects will interface with other projects and airline operations. Continual coordination
with Airport Operations, Airlines, and related Tenants will ensure the least possible operational
impact during construction. 
A project labor agreement will be used for these projects based on the importance of labor
continuity and the need to minimize any risk of impact to operations during construction. 
Scope of Work
The 2021-2025 Airfield Pavement and Supporting Infrastructure Replacement Program replaces
distressed airfield pavements, joint sealant, and supporting infrastructure at the Airport. Airfield
work under this program in 2023 includes taxilane pavement and drainage work at A, D, and S
Concourses, extension of a mid-airfield power ductbank, and installation of over height vehicle
warning bars to protect the Runway 16R FAA approach lighting system. 
The AUI project is a three-year project to replace aging, failing, and over-capacity utility systems
serving the existing terminal and apron areas. The 2023 AUI scope is located on the airside of the
S and A Concourses and includes sanitary sewer, domestic water, power, and the Industrial
Wastewater System (IWS). Staff will procure long lead items including ductile iron and PVC pipes
for sewer, water system and IWS.
The PIDS project will install power and communication infrastructure and deploy technology to
monitor, track, and rapidly respond to security threats along the identified airfield perimeter. The
infrastructure components of this project are collocated and interdependent with the work
elements within the other 2023 Airfield projects.
The Snow Storage Expansion project expands the laydown area available for stockpiling and
managing snow on the airfield during winter storm events. Airfield work under this program in
2023 includes expansion and infrastructure improvements of the existing north and south snow

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

             COMMISSION AGENDA – Action Item No. 8h                                 Page 4 of 13 
Meeting Date: October 25, 2022 
storage areas, as well as widening of the perimeter roadway for safe transit of snow removal 
equipment. 
The SAVCP will add vehicle gate arms and security screening equipment at the north and south
ends of the terminal secured area to ensure that only approved vehicles have access to that area
of the airfield.

Schedule 
Activity 
Construction Contract #                     Contract #1              Contract #2 
Commission construction authorization       2022 Quarter 4          2022 Quarter 4 
Construction starts                            2023 Quarter 2           2023 Quarter 1 
In-use date                                    2023 Quarter 4           2023 Quarter 4 
Cost Breakdown                                     This Request           Total Project 
2021-2025 Airfield Pavement and Supporting Infrastructure Replacement Prog. (C800930) 
Design                                                           $0            $16,000,000 
Construction                                           $27,700,000          $137,500,000 
Total                                                        $27,700,000           $153,500,000 
Airfield Utility Improvements (C801177) 
Design                                                           $0             $6,595,200 
Construction                                             $4,600,000            $39,604,800 
Total                                                         $4,600,000             $46,200,000 
Perimeter Intrusion Detection System (C800844) 
Design                                                    $400,000            $3,025,000 
Construction                                           $22,175,000           $22,875,000 
Technology                                             $625,000            $8,145,000 
Total                                                        $23,200,000            $34,045,000 
Snow Storage Expansion (C801171) 
Design                                                           $0             $2,794,000 
Construction                                             $7,553,000            $14,706,000 
Total                                                         $7,553,000             $17,500,000 
Secured Area Vehicle Checkpoint (C801237) 
Design                                                           $0               $600,000 
Construction                                             $4,100,000             $4,100,000 
Total                                                         $4,100,000              $4,700,000 
ALTERNATIVES AND IMPLICATIONS CONSIDERED 


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

             COMMISSION AGENDA – Action Item No. 8h                                 Page 5 of 13 
Meeting Date: October 25, 2022 
Alternative 1 – Proceed only with federally funded 2023 Contract #1 Airfield work including: the
Airfield Pavement and Supporting Infrastructure Replacement Program and the Airfield Utility
Improvements. Do not proceed with the project scope in 2023 Contract #2 including extension of
a mid-airfield power ductbank, installation of over height vehicle damage protection bars,
installation of secured area vehicle checkpoints, expansion of snow storage area, and installation
of PIDS infrastructure and technology.
Cost Implications: $28,369,000  in Capital Cost for 2023 Contract #1 plus $5,381,000  in
unanticipated expense cost for the uncompleted 2023 Contract #2 projects.
Pros: 
(1)    Reduced capital spending in 2023. 
(2)    Less construction impacts to airport/airline operations in 2023.
(3)    Grant funded renewal and replacement work still proceeds. 
Cons: 
(1)   Risk of damaging Runway 16R FAA approach lighting system by over height vehicles,
future repairs will likely include replacing sections of the bridge, causing significant
impacts to airfield operations. 
(2)   No ability to provide continuous 24/7/365 monitoring, real-time alerting, identification
and coordinated response to intrusion(s). Higher operating cost for additional FTE and
increased vehicle maintenance due to increased patrols. 
(3)   Unable to achieve the Aviation Master Security Plan goals and objectives.
(4)   Continuing concern for the Airport’s National Pollutant Discharge Elimination Systems
(NPDES) permit noncompliance when snow is stored outside of the IWS basin.
(5)   Regulatory compliant snow storage within IWS basins will need to displace aircraft
positions.
This is not the recommended alternative. 
Alternative 2 – Construct each individual project with separate construction contracts. 
Cost Implications: The Estimated amount of additional capital costs for delivering the projects by
individual construction contracts is $4,500,000 more than delivering via two major construction
contracts as propped by the recommended alternative.
Pros:
(1)   Less complexity for budget tracking during construction.
Cons:
(1)    Reduced efficiencies due to rework and multiple, separate jurisdictional coordination
such as the FAA.
(2)   Additional labor costs for contracting on-boarding and mobilizations, multi-project ramp
up and close out.
(3)   Increased coordination required between overlapping projects.
(4)   Increased construction safety risk due to overlapping work areas.
(5)   Additional and recurring impacts to airfield operations until all efforts are completed. 

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

             COMMISSION AGENDA – Action Item No. 8h                                 Page 6 of 13 
Meeting Date: October 25, 2022 
This is not the recommended alternative. 
Alternative 3 – Move forward to construct all 7 projects as a single coordinated effort.
Cost Implications: $67,153,000 
Pros:
(1)     Reduces safety risks, minimizes operational impacts and increases efficiencies as
coordination and construction is managed as a single effort.
(2)     Minimizes time to completion, limiting exposure to future cost increases, while
delivering benefits expeditiously.
(3)     Programmatic replacement of aged and distressed pavements and related
infrastructures. Ensures regulatory compliance and adaption of full employee
screening of the terminal area, in addition to meeting AV Security goals and
objectives.
(4)     Snow storage capacity increases, and meltwater will flow to the IWS, meeting
regulatory requirements, while reducing annual operating costs.
(5)     Mitigate the risk of the FAA’s approach lighting system being struck by over height
vehicles. 
Cons:
(1)   Earlier capital spending in 2023.
(2)   Additional accounting complexity during construction. 
This is the recommended alternative. 
FINANCIAL IMPLICATIONS 
2021-2025 Airfield Pavement and
Supporting Infrastructure Replacement
Program (C800930) - Cost
Estimate/Authorization Summary 
COST ESTIMATE                             Capital        Expense         Total 
Original estimate                              $155,740,000        $560,000   $156,300,000 
Previous changes – net                         ($2,800,000)              $0    ($2,800,000) 
Revised estimate                             $152,940,000        $560,000   $153,500,000 
AUTHORIZATION 
Previous authorizations                         $78,935,000        $260,000    $79,195,000 
Current request for authorization               $27,600,000        $100,000    $27,700,000 
Total authorizations, including this request     $106,535,000        $360,000   $106,895,000 
Remaining amount to be authorized           $46,405,000       $200,000    $46,605,000 

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

             COMMISSION AGENDA – Action Item No. 8h                                 Page 7 of 13 
Meeting Date: October 25, 2022 

Airfield Utility Improvements (C801177) -             Capital         Expense            Total 
Cost Estimate/Authorization Summary 
COST ESTIMATE 
Original estimate                                $34,592,000               $0     $34,592,000 
Current change                               $11,608,000              $0    $11,608,000 
Revised estimate                              $46,200,000              $0    $46,200,000 
AUTHORIZATION 
Previous authorizations                          $6,595,200               $0      $6,595,200 
Current request for authorization                $4,600,000               $0      $4,600,000 
Total authorizations, including this request      $11,195,200               $0     $11,195,200 
Remaining amount to be authorized           $35,004,800             $0    $35,004,800 
Perimeter Intrusion Detection System               Capital        Expense           Total 
(C800844) - Cost Estimate/Authorization
Summary 
COST ESTIMATE 
Original estimate                                $10,000,000                      $10,000,000 
Previous changes – net                         $18,500,000        $145,000     $18,645,000 
Current change                                 $5,300,000       $100,000      $5,400,000 
Revised estimate                              $33,800,000       $245,000    $34,045,000 
AUTHORIZATION 
Previous authorizations                         $10,000,000        $145,000     $10,145,000 
Current request for authorization               $23,100,000        $100,000     $23,200,000 
Total authorizations, including this request      $33,100,000        $245,000     $33,345,000 
Remaining amount to be authorized               $700,000              $0       $700,000 
Snow Storage Expansion (C801171) - Cost            Capital        Expense           Total 
Estimate/Authorization Summary 
COST ESTIMATE 
Original estimate                                $17,500,000               $0     $17,500,000 
Previous changes – net                                   $0              $0              $0 
Current changes - net                              -$50,000         $50,000              $0 
Revised estimate                              $17,450,000         $50,000    $17,500,000 
AUTHORIZATION 
Previous authorizations                          $2,794,000               $0      $2,794,000 
Current request for authorization                $7,553,000         $50,000      $7,603,000 
Total authorizations, including this request      $10,347,000         $50,000     $10,397,000 

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

             COMMISSION AGENDA – Action Item No. 8h                                 Page 8 of 13 
Meeting Date: October 25, 2022 
Remaining amount to be authorized            $7,103,000             $0     $7,103,000 
Secured Area Vehicle Checkpoint Project             Capital        Expense           Total 
(C801237) - Cost Estimate/Authorization
Summary 
COST ESTIMATE 
Original estimate                                 $1,800,000               $0      $1,800,000 
Previous changes – net                          $2,500,000              $0      $2,500,000 
Current change                                  $350,000        $50,000       $400,000 
Revised estimate                                $4,650,000         $50,000      $4,700,000 
AUTHORIZATION 
Previous authorizations                            $600,000               $0        $600,000 
Current request for authorization                $4,050,000         $50,000      $4,100,000 
Total authorizations, including this request       $4,650,000         $50,000      $4,700,000 
Remaining amount to be authorized                    $0             $0             $0 

Annual Budget Status and Source of Funds 
2021-2025 Airfield Pavement and Supporting Infrastructure Replacement Program (CIP C800930) 
This project was included in the 2022-2026 capital budget and plan of finance with a
budget of $152,940,000. This project has a Majority-In-Interest approval from the airlines
in January 2020. The funding sources will be the Airport Development Fund, AIP grants,
and revenue bonds. 
Airfield Utilities Improvements (AUI) - (CIP C801177) 
This project was included in the 2022-2026 capital budget and plan of finance with a
budget of $46,200,000. This project has a Majority-In-Interest approval from the airlines
in September 2021. The funding sources would be Airport Development Fund and Airport
Revenue Bonds. 
Perimeter Intrusion Detection System (PIDS) – (CIP 800844) 
This project was included in the 2022-2026 capital budget and Plan of Finance for
$28,500,000.  The capital budget increase of $5,300,000  was transferred from the
Aeronautical Allowance #C800753 ($3,650,000) and the Utility Master Plan Allowance
#C801267 ($1,650,000) resulting in zero net change to the Aviation capital budget. The
funding sources would be Airport Development Fund and Airport Revenue Bonds The
additional $245,000 expense budget for training will be budgeted in 2023 - 2024. This
project has a Majority-In-Interest (MII) approval from the airlines on March 28, 2019 in the

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

             COMMISSION AGENDA – Action Item No. 8h                                 Page 9 of 13 
Meeting Date: October 25, 2022 
amount of $10 million. Per Signatory Lease Operating Agreement, Port Management has
the discretion to utilize the MII Management Reserve for the budget increase. 
Snow Storage Expansion - (CIP C801171) 
This project was included in the 2022-2026 capital budget and plan of finance with a
budget of $17,500,000. The funding sources would be Airport Development Fund and
revenue bonds. This project has a Majority-In-Interest (MII) approval from the airlines on
October 20, 2021. 
Secured Area Vehicle Checkpoints (SAVCP) - (CIP C801237) 
Included in the 2022-2026 capital budget and plan of finance with a budget of $1,800,000.
A budget increase of $2,500,000 was transferred from the Aeronautical Reserve CIP
C800753 resulting in zero net change to the Aviation capital budget. The funding sources 
would be Airport Development Fund and revenue bonds. 
Financial Analysis and Summary 
C800930 2021-2025 Airfield Pavement and Supporting Infrastructure Replacement Program 
Project cost for analysis              $153,500,000 
Business Unit (BU)                  Airfield movement and Airfield apron 
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                       Total project cost CPE of 0.30 in 2026; annual CPE of .05 
C801177 Airfield Utility Improvements 
Project cost for analysis              $46,200,000 
Business Unit (BU)                  Airfield movement and airfield apron 
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                       $0.11 in 2026 
C800844 Perimeter Intrusion Detection System 
Project cost for analysis              $34,045,000 
Business Unit (BU)                  Airfield Movement Area 
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                       $0.11 in 2025 

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

             COMMISSION AGENDA – Action Item No. 8h                                Page 10 of 13 
Meeting Date: October 25, 2022 

C801171 Snow Storage Expansion 
Project cost for analysis              $17,500,000 
Business Unit (BU)                  Airfield Movement Area 
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                       $0.06 in 2025 
C801237 Secured Airfield Vehicle Checkpoint 
Project cost for analysis              $4,700,000 
Business Unit (BU)                  Airfield Movement Area 
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                       $0.01 in 2025 
Future Revenues and Expenses (Total cost of ownership) 
2021-2025 Airfield Pavement and Supporting Infrastructure Replacement Program (CIP C800930) 
The AIP project will not have an impact on annual Aviation Maintenance Operating and
Maintenance (O&M) costs for the pavement assets. This project may lead to a reduction in
the amount of time currently spent by the Port Maintenance team on joint seal and pavement
spall repairs. After implementing the project, the improved portions of the pavement will have
a renewed 40-year asset life and a greatly reduced risk of the pavement producing loose gravel
and rock Foreign Object Debris (“FOD”) that could be picked up by vehicle tires or blown by
jet engine exhaust and spread across the apron, taxiways and runways. 

Airfield Utilities Infrastructure (AUI) -- (CIP C801177) 
The AUI project will not have an impact on annual Aviation Maintenance O&M costs for
mechanical or electrical systems and may lead to a reduction in the amount of time currently
spent by the field crew on pipe inspections due to the current condition of the water and
sewer systems. After implementing the project, the improved portions of the water and sewer
systems will have a renewed 50-year asset life and a greatly reduced risk of failures,
emergency repair and maintenance work, and impacts to operations. 

Perimeter Intrusion Detection System (PIDS) – (CIP 800844) 

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

             COMMISSION AGENDA – Action Item No. 8h                                Page 11 of 13 
Meeting Date: October 25, 2022 
Annual recurring maintenance and license costs estimated at $140,000, will be budgeted in
the Aviation Maintenance operating budget. Port support and spare parts are estimated at
$230,000 annually and will be budgeted in the Aviation Maintenance operating budget. 
Snow Storage Expansion (CIP C801171) 
Aviation Maintenance will see a slight increase in O&M cost for additional pavement surface.
However, mechanical and electronic systems will have a renewed asset life with fewer outages
and repairs. 

Secured Area Vehicle Checkpoints (SAVCP) - (CIP C801237) 
Aviation Maintenance will see a slight increase in O&M cost for Electrical and Electronic
systems, to maintain cameras and access controls and lighting. Mechanical systems
maintenance will be required for HVAC for the spaces. Labor hours and materials required will
be determined when presented with a clearer scope during the design phase of the project.
ATTACHMENTS TO THIS REQUEST 
(1)   Presentation slides
PREVIOUS COMMISSION ACTIONS OR BRIEFINGS 
2021-2025 Airfield Pavement and Supporting Infrastructure Replacement Program (CIP C800930)
November 16, 2021 - The Commission authorized the Executive Director to (1) advertise and
execute a major works construction contract and (2) include a Project Labor Agreement for
the 2022 Airfield Pavement and Supporting Infrastructure Replacement Project, at the Seattle-
Tacoma International Airport. This authorization is for $24,000,000 with a total authorized to
date of $79,195,000 and a previously approved total 2021-2025 program budget of
$153,500,000. 
August 10, 2021 – The Commission authorized the Executive Director to advertise and award
a major public works contract to replace the North Runway Protection Zone Culvert (NRPZ
Culvert), a year 2022 component of the 2021 to 2025 Airfield Pavement and Supporting
Infrastructure Replacement Program. This construction authorization is for $3,800,000 for a
total program authorization to date of $55,195,000. The total 2021-2025 program cost is
$153,500,000. 
November 10, 2020 – The Commission authorized the Executive Director to (1) advertise and
execute a major works construction contract and (2) include a project labor agreement for the
replacement of distressed pavements and supporting infrastructure for the 2021 portion of

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

             COMMISSION AGENDA – Action Item No. 8h                                Page 12 of 13 
Meeting Date: October 25, 2022 
the 2021-2025 Airfield Pavement and Supporting Infrastructure Replacement Program at the
Seattle-Tacoma International Airport. This construction authorization is for $37,900,000 for a
total authorization to date of $51,395,000. The total 2021-2025 program cost is $153,500,000. 
October 22, 2019 – The Commission authorized the Executive Director to authorize design and
preparation of construction documents for the 2021-2025 Airfield Pavement and Supporting
Infrastructure Replacement Projects at the Seattle-Tacoma International Airport in the
amount of $16,000,000 and approve the use of a project labor agreement (PLA) for each year’s
construction contract. 
Airfield Utilities Infrastructure (AUI) - (CIP C801177) 
August 10, 2021 – The Commission authorized the Executive Director to (1) complete design
and prepare construction documents for the Airfield Utilities Infrastructure (AUI) project at
Seattle-Tacoma International Airport (SEA) and (2) enter into reimbursable agreements with
the Federal Aviation Administration. This design authorization is for an amount of $6,300,000
out of a total estimated project cost of $46,200,000. 
Perimeter Intrusion Detection System (PIDS) – (CIP 800844) 
May 24, 2022 – The Commission authorized the Executive Director to increase the Perimeter 
Intrusion Detection System (PIDS) with Siemens, contract #S-00319688 by $374,000 to 
procure hardware, professional and installation services to ensure PIDS redundancy. 
December 15, 2020 – The Commission authorized the Executive Director to (1) increase the
Perimeter Intrusion Detection System (PIDS) project at Seattle-Tacoma International Airport
(SEA) funding by $18,645,000 for a total estimated project cost of $28,645,000; (2) expand the
PIDS coverage area; (3) execute contracts for required hardware, software, and technical
vendor services, license(s) and maintenance; (4) complete design (5) enter into reimbursable
agreements with the Federal Aviation Administration (FAA); and (6) execute contract(s) for up
to ten years for licenses, service, and maintenance fees estimated not-to-exceed $4,500,000,
which will be paid from the Aviation annual operating budget. The amount requested under
this authorization is $6,625,000 with an estimated total program cost of $28,645,000. 
January 22, 2019 – The Commission authorized $3,500,000 of a $10,000,000 CIP to procure
and implement a Perimeter Intrusion Detection system with limited coverage scope. 
Snow Storage Expansion (CIP C801171) 
October 26, 2021 – The commission authorized the Executive Director to design and prepare
construction  documents  for  the  Snow  Storage  Expansion  project  at  Seattle-Tacoma
International Airport (SEA) for a Total Request Amount of $2,500,000 and a Total Project
Authorization of $2,794,000, and the Estimated Overall Project Cost of $17,500,000. 

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

             COMMISSION AGENDA – Action Item No. 8h                                Page 13 of 13 
Meeting Date: October 25, 2022 

Secured Area Vehicle Checkpoints (SAVCP) - (CIP C801237) 
February 8, 2022 – The Commission authorized the Executive Director to design and prepare
construction documents for the Secured Area Vehicle Checkpoints (SAVCP) project at Seattle-
Tacoma International Airport (SEA) for $550,000 out of an estimated total project cost of
$4,300,000. 















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



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