COMMISSION 
AGENDA MEMORANDUM                        Item No.          6f 
ACTION ITEM                            Date of Meeting      March 12, 2019 
DATE:     March 4, 2019 
TO:        Stephen P. Metruck, Executive Director 
FROM:    Michael Ehl, Director, Aviation Operations 
Wayne Grotheer, Director, Aviation Project Management 
SUBJECT:  2019 Airfield Pavement Replacement Project (CIP #C800483). 
Amount of this request:              $10,440,000 
Total estimated project cost:         $11,800,000 
ACTION REQUESTED 
Request Commission authorization for the Executive Director to advertise and execute a major
works construction contract for the replacement of distressed pavements and related utilities
for the 2019 portion of the 2016-2020 Airfield Pavement Replacement Program at the Seattle-
Tacoma International Airport. This authorization is for $10,440,000 with a total project cost of
$11,800,000. 
EXECUTIVE SUMMARY 
This project is part of an ongoing Pavement Management and Maintenance Program (PMMP)
as required by the Federal Aviation Administration (FAA). 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 utility infrastructure 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 as well as areas surrounding the aircraft gates. 
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 at Seattle-Tacoma
International Airport for the next 25 years." The PMMP maintains the integrity of airfield
pavements and enables efficient airport operations. If deferred, the future repair cost would be
greater due to annual escalation cost and Foreign Object Debris (FOD) generated from the
failing pavements will continue to pose a risk to the aircraft engine and expose the Port to
liability issues. This project is included in the 2019  2023 capital budget and plan of finance. 



Template revised January 10, 2019.

COMMISSION AGENDA  Action Item No. __6f__                               Page 2 of 5 
Meeting Date: March 12, 2019 
JUSTIFICATION 
The 2019 Airfield Pavement Project is a continuation of the programmatic approach of
replacing aging 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. 
The damaged pavements in these areas are no longer structurally adequate to handle the
constant traffic weight of large vehicles and ground support equipment (GSE). There have been
issues with FOD being tracked onto the active aircraft movement areas.  Replacing distressed
pavements on the airfield ensures safe operations at Seattle-Tacoma International Airport. 
Most of the 2019 airfield work will not impact airline and airport operational areas and does
not have completion date deadlines. 
Diversity in Contracting 
Through the Diversity in Contracting (DC) program, women and minority-owned business
enterprise (WMBE) aspirational goals will be included in this procurement. Specific WMBE
outreach efforts will be conducted through the Port of Seattle's Small Business Generator
(PortGen) program, which includes targeted announcements to those interested WMBEs within
the categories of the project's scope of work. The WMBE goal for this project is 5%. 
DETAILS 
Scope of Work 
This project will: 
1.  Replace failing asphalt pavement located south of the Cargo 4 Maintenance Facility. 
2.  Replace failing asphalt pavement located at the Concourse D Apron near Gate D11. 
3.  Replace failing asphalt pavement located along the western edge of the South Satellite 
Apron. 
4.  Replace failing asphalt pavement in the fire lane located east of Hardstand 7 and behind
the Alaska Airlines Hangar. 
5.  Upgrade a damaged electrical handhole utility located on the service road leading to the
Fuel Farm. 
6.  Replace individual panels of damaged concrete at various locations on Taxilanes and
Apron areas as determined by current inspections. 
7.  Replace a failed electrical lighting Surface Movement Guidance Control System conduit
and related electrical handhole along Taxiway A. 
This project will interface with other projects and airline operations. Continual coordination
with Airport Operations, airlines, and related tenants is done to ensure the least possible
operational impact during construction. The construction impacts to Taxiway A will be minimal
as that work will mostly be performed during night shift. 

Template revised September 22, 2016; format updates October 19, 2016.

COMMISSION AGENDA  Action Item No. __6f__                               Page 3 of 5 
Meeting Date: March 12, 2019 
Schedule 
Construction start                         2019 Quarter 3 
In-use date                                2019 Quarter 4 
Cost Breakdown                                  This Request              Total Project 
Design                                                       $0                $1,360,000 
Construction                                        $10,440,000               $10,440,000 
Total                                                    $10,440,000                 $11,800,000 
ALTERNATIVES AND IMPLICATIONS CONSIDERED 
Alternative 1  Delay the project beyond 2019 
Cost Implications: $12,064,000 
The estimate is based on the assumption of delaying this project to 2020. If the project is
delayed beyond 2020, the cost estimate would be further increased to reflect annual
escalation. 
Pros: 
(1) No construction cost for 2019. 
(2) No construction impacts to aircraft operations or airport operations at affected areas by
this project in 2019. 
Cons: 
(1) Continued use of the pavement could result in increased FOD, creating additional safety
hazards for aircraft ingestion. 
This is not the recommended alternative. 
Alternative 2  Only replace the individual damaged concrete panels on taxiways, runways, and
apron. 
Cost Implications: $3,800,000 
Pros: 
(1) Reduced total construction cost for 2019. 
(2) The  replacement  of  damaged  concrete  panels  helps  with  ensuring  safe  aircraft
operations. 
(3) Meets FAA Pavement Management Maintenance Program requirement. 
Cons: 
(1) Continued use of the aging 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. 
This is not the recommended alternative. 

Template revised September 22, 2016; format updates October 19, 2016.

COMMISSION AGENDA  Action Item No. __6f__                               Page 4 of 5 
Meeting Date: March 12, 2019 

Alternative 3  Replace distressed pavements and supporting projects on the airfield during the
2019 construction season. 
Cost Implications: $11,800,000 
Pros: 
(1) Programmatic replacement of distressed pavements provides stable structural support
to aircraft and airport operations. 
(2) Continue to support the Port's Century Agenda. 
(3) SMGCS route on Taxiway A will be repaired to provide for safe low-visibility operations. 
Cons: 
(1) Earlier capital spending than the other alternatives. 
This is the recommended alternative. 
FINANCIAL IMPLICATIONS of 2019 Airfield Pavement Project C800483 
Cost Estimate/Authorization Summary              Capital        Expense           Total 
COST ESTIMATE 
Revised Budget                               $10,300,000              $0    $10,300,000 
Budget Transfer from 2020-2024 Pavement    $15,200,000                   $15,200,000 
Replacement Program CIP 
Budget Increase                                  $300,000                       $300,000 
Revised Current Budget                        $25,800,000              $0    $25,800,000 
AUTHORIZATION 
Previous authorizations                          $4,155,000                      $4,155,000 
Current request for authorization (2019         $10,440,000                     $10,440,000 
Construction) 
Total authorizations, including this request      $14,595,000               $0     $14,595,000 
Remaining amount to be authorized            $11,205,000              $0    $11,205,000 
Annual Budget Status and Source of Funds 
The Airfield Pavement Program (C800483) is included in the 2019-2023 capital budget and plan
of finance with a budget of $10,300,000. The budget of $15,200,000 was moved from C800930
Airfield  Pavement  Replacement  2021-2024  to  accommodate  the  2020  airfield  pavement
improvements. The budget increase of $300,000  was transferred from the Aeronautical
Allowance C800753 to cover the additional cost of Taxiway A Conduit Repair. The funding
sources for this project will be the Airport Development Fund (ADF), future revenue bonds, and
Airport Improvement Program (AIP) grant. 
Financial Analysis and Summary 
Project cost for analysis                         $25,800,000 

Template revised September 22, 2016; format updates October 19, 2016.

COMMISSION AGENDA  Action Item No. __6f__                               Page 5 of 5 
Meeting Date: March 12, 2019 
Business Unit (BU)                            Airfield Movement Area 
Effect on business performance (NOI after    NOI after depreciation will increase 
depreciation) 
IRR/NPV (if relevant)                           N/A 
CPE Impact                                 $0.07 in 2020 
Future Revenues and Expenses (Total cost of ownership) 
ATTACHMENTS TO THIS REQUEST 
Diagram of 2019 Airfield Pavement Replacement Project 
PREVIOUS COMMISSION ACTIONS OR BRIEFINGS 
October 22, 2018  The Commission authorized design funds for construction documents,
for replacement of distressed pavement and related utilities in the 2020 portion of the
2016-2020 Airfield Pavement Program. 
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 in the 2017 portion of the 2016-2020 Pavement Program. 
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 September 22, 2016; format updates October 19, 2016.