COMMISSION 
AGENDA MEMORANDUM                        Item No.          6j 
ACTION ITEM                            Date of Meeting     November 12, 2019 
DATE:     November 4, 2019 
TO:        Stephen P. Metruck, Executive Director 
FROM:    Laurel Dunphy, Director, Aviation Operations 
Wayne Grotheer, Director, Aviation Project Management 
SUBJECT:  2020 Airfield Pavement Replacement Projects (CIP # C800483) 
Amount of this request:              $11,235,000 
Total estimated project cost:         $18,416,000 
ACTION REQUESTED 
Request Commission authorization for the Executive Director to advertise and execute a major
works construction contract for the replacement of damaged pavements, joint seal and related
utilities  for  the  2020  Airfield  Pavement  portion  of  the  2016-2020  Airfield  Pavement
Replacement Program at the Seattle-Tacoma International Airport. The 2020 Airfield Pavement
Replacement Project is estimated to cost $18,416,000. The overall CIP budget is $25,830,000.
This authorization is for the remaining $11,235,000 to perform this construction in the final
year of the CIP. 
EXECUTIVE SUMMARY 
This project is part of the ongoing Pavement Management and Maintenance Program (PMMP)
as required by the Federal Aviation Administration (FAA), and a recognized best practice to
provide a safe and operable pavement system. The focus of this program is to replace
distressed and damaged pavement on the airfield. This project will take advantage of these
replacements by also replacing in-pavement utilities and covers when it makes sense, as well as
removing abandoned utilities within the general work area. The project includes emergent
distressed pavement areas on the airfield. 
Replacing damaged pavement on the airfield supports the long-term strategy of the Port's
Century Agenda objective to "Meet the region's air transportation needs atthe airport for the
next 25 years." The PMMP maintains the integrity of airfield pavements andenables efficient
airport operations. Deferring damaged pavement replacement could potentially increase risk to
airfield operations, damage from ensuing Foreign Object Debris (FOD), increase the likelihood
of critical or emergency work, and drive costs higher in the future. 

Template revised January 10, 2019.

COMMISSION AGENDA  Action Item No. _6j_                                 Page 2 of 5 
Meeting Date: November 12, 2019 
This project is included in the 2018  2022 capital budget and plan of finance.  This work is
included in the airport's 5-year Airport Capital Improvement Plan submitted to the FAA for
Federal Funding under the Airport Improvement Program. It is the Port's intention to pursue
FAA grant funding for 2020 Airfield Pavement Replacement Projects.
This project does not have an FAA approved Project Labor Agreement (PLA). We are working
with the FAA to get PLAs approved for future FAA grant funded work. 
JUSTIFICATION 
The 2020 Airfield Pavement Project  is a continuation of the programmatic approach of
replacing aged and distressed pavement as part of a multi-year program. Many sections of
airfield pavement have exceeded their 20-year service life and have become cracked and
damaged. 
This project will interface with other projects and airline operations so that the scope and
schedule of this project will not be in conflict. Replacing distressed pavements on the airfield
ensures safe operations at STIA. 
Diversity in Contracting 
This  project  includes  federally  assisted  funding  that  requires  the  use  of  the  federal
Disadvantaged Business Enterprise (DBE) program rules and regulations, which includes the
setting of DBE goals.  A DBE goal of 9% has been established for this construction project.
DETAILS 
Scope of Work 
The project scope includes replacing the following failing and distressed Airfield infrastructure: 
Portland Cement Concrete Pavement (PCCP) areas within Taxilane W and Taxiway B
near the South Satellite. 
Asphalt Concrete Pavement (ACP) apron areas near the North Satellite Taxilane
shoulder, the Airport Rescue and Fire Fighting station, and the Cargo 6 Hardstand. 
Vehicle Service Road pavements adjoining Cargo 2 and 3.
ACP apron at Cargo 2 east equipment storage area. 
Upgrade of utilities located within the above pavement replacement work areas. 
Individual PCCPs at various location on the airfield. 

Schedule 
Activity 
Construction start                                2020 Quarter 1 
In-use date                                       2020 Quarter 4 

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

COMMISSION AGENDA  Action Item No. _6j_                                 Page 3 of 5 
Meeting Date: November 12, 2019 
Cost Breakdown                                     This Request           Total Project 
Design                                                           $0             $1,285,000 
Construction                                            $11,235,000            $17,131,000 
Total                                                        $11,235,000             $18,416,000 
ALTERNATIVES AND IMPLICATIONS CONSIDERED 
Alternative 1 - Delay the project beyond 2020 
Cost Implications: $19,089,000 
The estimate is based on delaying this project to 2021. If the project is delayed beyond 2021,
the cost estimate would be further increased to reflect annual escalation. 
Pros: 
(1)   No construction cost for 2020. 
(2)   No construction impacts to aircraft operations or airport operations at affected areas
by this project in 2020. 
Cons: 
(1)   Continued use of the pavement could result in increased FOD, creating additional
safety hazards for aircraft ingestion. 
(2)   This project would likely lose the opportunity to be combined with other construction
projects if it's delayed beyond 2020. This would result in contracting inefficiencies and
more impact to airfield operations. 
(3)   Lost  opportunity  to  receive  FAA  Entitlement  Funds  allocated  for  Seattle-Tacoma
International Airport for 2020 calendar year. 
This is not the recommended alternative. 

Alternative 2 - Only replace the individual damaged concrete panels on taxiways, runways
and apron. 
Cost Implications: $7,342,000 
Pros: 
(1)   Reduced total construction cost for 2020. The replacement of damaged concrete
panels helps with ensuring safe aircraft operations. 
Cons: 
(1)   Continued use of the aged and distressed asphalt pavement would result in increased
FOD and potentially increase risk to airfield operations. 
(2)   Deferring asphalt replacement would likely drive costs higher in the future. 
(3)   Lost opportunity to receive FAA Entitlement Funds allocated for Seattle-Tacoma
International Airport for 2020 calendar year. 
This is not the recommended alternative. 

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

COMMISSION AGENDA  Action Item No. _6j_                                 Page 4 of 5 
Meeting Date: November 12, 2019 

Alternative 3 - Replace distressed pavements and supporting projects on the airfield during
the 2020 construction season. 
Cost Implications: $18,416,000 
Pros: 
(1)    Programmatic replacement of distressed pavements provides stable structural
support to aircraft and airport operations. 
(2)    This project could be combined with other construction projects during the 2020
construction season to increase efficiencies and minimize impacts to airport
operations. 
(3) Support the Port's Century Agenda. 
Cons: 
(1)    Earlier capital spending than the other alternatives. 
This is the recommended alternative. 
FINANCIAL IMPLICATIONS 
Cost Estimate/Authorization Summary               Capital        Expense           Total 
COST ESTIMATE 
Revised Budget                               $10,300,000              $0    $10,300,000 
Budget Additions                              $15,530,000              $0    $15,530,000 
Current Budget                               $25,830,000              $0    $25,830,000 
AUTHORIZATION 
Previous authorizations                         $14,595,000               $0     $14,595,000 
Current request for authorization               $11,235,000               $0     $11,235,000 
Total authorizations, including this request      $25,830,000               $0     $25,830,000 
Remaining amount to be authorized                    $0             $0             $0 
Annual Budget Status and Source of Funds 
The Airfield Pavement Program (C800483) is included in the 2018-2022 capital budget and plan
of finance with a budget of $31,026,000.  The budget of $22 million was moved to the 2018
Taxiway Improvement project C800914.  For the 2019 - 2023 capital budget, the remaining
budget was $10,300,00.  This was not sufficient to cover the needed program for 2020, so
budget was transferred from the 2021  2025 Airfield Pavement Program CIP (C800930). The
funding sources for the 2020 work will be the Airport Development Fund and existing revenue
bonds. 
Financial Analysis and Summary 
Project cost for analysis              $25,830,000 

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

COMMISSION AGENDA  Action Item No. _6j_                                 Page 5 of 5 
Meeting Date: November 12, 2019 
Business Unit (BU)                  Airfield Movement Area 
Effect on business performance     NOI after depreciation will increase 
(NOI after depreciation) 
IRR/NPV (if relevant)                N/A 
CPE Impact                       $.06 in 2021 
Future Revenues and Expenses (Total cost of ownership) 
Annual Operating and Maintenance costs are not anticipated to change appreciably. The
estimated life expectancy for this project is 40 years for concrete pavement. Replacing
pavement will result in maintenance cost avoidance. 
ATTACHMENTS TO THIS REQUEST 
(1)   Presentation slides 
PREVIOUS COMMISSION ACTIONS OR BRIEFINGS 
October 9, 2018  The Commission authorized design funds for construction documents for
replacement of distressed pavement and related utilities in the 2019 portion of the
2016-2020 Airfield Pavement Program. 
November 14, 2017  The Commission authorized advertisement and execution of a single
construction contract which included the 2018 Airfield Pavement Replacement as part
of the 2018 Taxiway Improvement Projects and approved non-use of PLA. 
May 9, 2017  The Commission authorized design funds for construction documents for
replacement of distressed pavement and joint sealant replacement in the 2018 portion
of the 2016-2020 Airfield Pavement Program, and approved use of PLA. 
October 25, 2016  The Commission authorized advertisement and execution of contract
for retrofits of 400 Hz In-ground power units and reconstruction of existing pavement at
Cargo 2. 
February 24, 2015  The Commission authorized design funds for construction documents,
for replacement of distressed pavement and joint seal in the 2016 portion of the 2016-
2020 Pavement Program. 






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