Template revised January 10, 2019.
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 at the airport for the
next 25 years.” The PMMP maintains the integrity of airfield pavements and enables 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.
COMMISSION AGENDA – Action Item No. _6j_ Page 2 of 5
Meeting Date: November 12, 2019
Template revised June 27, 2019 (Diversity in Contracting).
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
In-use date
COMMISSION AGENDA – Action Item No. _6j_ Page 3 of 5
Meeting Date: November 12, 2019
Template revised June 27, 2019 (Diversity in Contracting).
Cost Breakdown
This Request
Total Project
Design
$0
Construction
$11,235,000
Total
$11,235,000
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.
COMMISSION AGENDA – Action Item No. _6j_ Page 4 of 5
Meeting Date: November 12, 2019
Template revised June 27, 2019 (Diversity in Contracting).
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
COMMISSION AGENDA – Action Item No. _6j_ Page 5 of 5
Meeting Date: November 12, 2019
Template revised June 27, 2019 (Diversity in Contracting).
Business Unit (BU)
Airfield Movement Area
Effect on business performance
(NOI after depreciation)
NOI after depreciation will increase
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.