6c Airfield Pavement Replacement Project Memo

COMMISSION 
AGENDA MEMORANDUM                        Item No.          6c 
ACTION ITEM                            Date of Meeting      October 22, 2019 
DATE:     October 14, 2019 
TO:        Stephen P. Metruck, Executive Director 
FROM:    Laurel Dunphy, Director, Aviation Operations 
Wayne Grotheer, Director, Aviation Project Management 
SUBJECT:  2021-2025 Airfield Pavement and Supporting Infrastructure Replacement Program
(CIP #C800930) 
Amount of this request:             $ 16,000,000 
Total estimated project cost:        $156,300,000 
ACTION REQUESTED 
Request Commission authorization for 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. The use of a PLA will be subject to approval by the Federal Aviation
Administration (FAA) for work receiving federal funding. 
EXECUTIVE SUMMARY 
An ongoing program of airfield pavement maintenance and replacement is required to provide
safe and efficient conditions for aircraft operations and meet FAA requirements; the 2021-2025
Airfield Pavement and Supporting Infrastructure Replacement Program is a continuation of the
programmatic approach of replacing distressed airfield pavement (concrete and asphalt), joint
sealant,  related  and  supporting  infrastructure  at  the  Airport.   The Airport's Pavement
Replacement Management Program supports the FAA mandated Pavement Maintenance
Management Program (PMMP),  which identifies pavement replacement priorities and is
directly  related  to  grant  funding.  With  many  of  the  pavements  and  supporting  airfield
infrastructure having long exceeded their planned lifespan, a robust pavement and utility
infrastructure replacement program is required.
The pavements and utility infrastructure identified for this 2021-2025 Capital Improvement
Program (CIP) have been determined by annual pavement inspections and reporting. While this
program is not inclusive of all distressed airfield pavements and infrastructure, the scope of the
program focusses on those assets having the three following criteria: (1) exceptionally high age,
(2) continual need for repair, and (3) high strategic value to airfield operations. 

Template revised January 10, 2019.

COMMISSION AGENDA  Action Item No. _6c_                                 Page 2 of 7 
Meeting Date: October 22, 2019 

This program is included in the annual FAA Airport Capital Improvement Program (ACIP) letter
for FAA Airport Improvement Program (AIP) Grant funding. Moving forward, this replacement
program is set to continue to align with the rolling 5-year FAA ACIP to utilize available federal
funds. To better align with both FAA grant schedules and to plan and execute the work
efficiently  we  are  requesting  full  2021-2025  CIP  program  design  authorization.  Yearly
construction design phases, significantly overlap the preceding year's construction contracts.
Full design authorization allows each year's project to move forward meeting FAA grant
required schedule milestones and to do programmatic level planning for airfield operational
impacts. Yearly issuance of construction contracts, will still receive separate authorizations
from Commission. 
JUSTIFICATION 
The Airport has approximately 21,850,000 square feet of runway, taxiway, taxilane, and apron
pavement. To comply with the  Federal Aviation Administration Pavement Management
Program requirement, the Airport must complete yearly pavement inspections detailing
pavement conditions according to specific FAA criteria. 
These yearly inspections support FAA project funding requests and aid in the development of 
prioritized work plans. Most airfield pavements included in this proposed CIP are 40 to 50 years
old and 14 to 16 inches thick; much thinner than the 20- to 22-inch standard used in the current
airfield pavements at the Airport. Having far exceeded their 20-year design service life and
lacking the thickness to support the weight and growing volume of the Airport's current aircraft
operations, these pavements have become cracked and damaged. 
Previous pavement and utility investments over the last 20 years have focused on the airfield's 
runway and connecting taxiway system (i.e., the Movement Area). The apron and taxilanes 
around the terminal areas (i.e., the Non-Movement Area) have been managed through a focus
on individual replacement of failed panels. This ad hoc approach does not result in a logical
progression of planned investments and is ineligible for federal grant funding. 
This proposed CIP will focus on comprehensive replacements of aging and damaged pavements 
and utilities with an emphasis on the taxilane centerline areas around the terminals, which
receive the highest traffic. This program focuses on strategic assets, combines work to make
the most of grant funding, and will perform phasing work in advance to reduce airline impacts. 
Diversity in Contracting 
One of the Century Agenda goals is to use the Port's influence as aninstitution to promote
small business growth and workforce development. This program includes federally assisted
funding that requires the use of the federal Disadvantaged Business Enterprise (DBE) program 
rules, which includes the setting of DBE goals.

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

COMMISSION AGENDA  Action Item No. _6c_                                 Page 3 of 7 
Meeting Date: October 22, 2019 
The Port's  Diversity in Contracting  program  will  support minority and women business
enterprise (MWBE) for specific projects, where federal funding is not applied. 
DETAILS 
The overall purpose of this program is to replace distressed and/or damaged pavements on the
airfield that will cause Foreign Object Debris (FOD) in the aircraft operational areas. It also
replaces  joint seal in areas that are most problematic  or where  missing; and r eplaces 
infrastructure/utilities in close proximity to pavement work areas or in support of airfield
operations. 
Scope of Work 
Each year of work will include pavement replacement of apron and/or keel sections, joint
reconstruction, replacement and repair of miscellaneous infrastructure/utilities within the
footprint and close to pavement, or in support of airfield operations. Where operationally
necessary, a limited number of individual damaged concrete panels will be replaced with Quick
Setting High Early Strength Concrete, which is not eligible for federal funding. Some scope
items or the schedule may change based on the continued aging of the airfield infrastructure 
and the need to prioritize replacements of failing infrastructure. Yearly issuance of construction
contracts will receive separate authorizations from Commission. 
Project Scope: 
Replace portions of damaged pavements in the taxilanes and taxiways serving gates at
the Satellites and Concourses 
Replace pavements in cargo apron areas 
Replace failing and aging airfield utilities and related airfield infrastructure 
Extend an airfield electrical power ductbank 
Perform airfield compliance upgrades to runway and taxiway systems 
Replace various runway, taxiway and taxilane joint seal 
Schedule 
2021: 
FAA Pre-Design Conference           2020 Quarter 1 
Construction Authorization            2020 Quarter 4 
Contract Execution                    2021 Quarter 1 
Construction Start                     2021 Quarter 1 
In-use Date                            2021 Quarter 4 



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

COMMISSION AGENDA  Action Item No. _6c_                                 Page 4 of 7 
Meeting Date: October 22, 2019 
2022: 
FAA Pre-Design Conference           2021 Quarter 1 
Construction Authorization            2021 Quarter 4 
Contract Execution                    2022 Quarter 1 
Construction Start                     2022 Quarter 1 
In-use Date                            2022 Quarter 4 
2023  2025: Follows above scheduling format meeting FAA Grant milestone time frames. 
Cost Breakdown                                      This Request         Total Program 
Design                                                 $16,000,000            $16,000,000 
Construction                                                     $0          $140,300,000 
Total                                                        $16,000,000           $156,300,000 
ALTERNATIVES AND IMPLICATIONS CONSIDERED 
Alternative 1  Only replace individual damaged concrete panels on taxiway, taxilanes and
runways. 
Cost Implications: Average number of panels = 50 per year; Cost in 2021:  $7,700,000 
Pros: 
(1)   Reduced capital spending in the short term. 
(2)   Meets minimum Pavement Management Program requirements. 
(3)   Replacement of damaged panels helps to reduce Foreign Object Debris (FOD) safety
hazards. 
(4)     Less prolonged construction impact to airport/airline operations. 
Cons: 
(1)   Continued use of aging and distressed asphalt and concrete pavement increases risk of
producing FOD and potentially increased risk of ingestion and aircraft damage. 
(2)   Delay in aging concrete replacement pushes full replacement into future, escalating
actual cost. 
(3)   No federal funding for maintenance work. 
(4)   Scope of work is uncertain and needs to be determined each year. 
(5)   Return each year for both design and construction authorization. 
(6)   Cost to escalate 5 percent per year. 
This is not the recommended alternative. 
Alternative 2  Reduce this CIP to pavement only  supporting infrastructure becomes an
independent CIP. 
Cost Implications: $114,200,000


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

COMMISSION AGENDA  Action Item No. _6c_                                 Page 5 of 7 
Meeting Date: October 22, 2019 
Pros: 
(1)   Reduced pavement CIP budget. 
(2)   Pavement replacement portions already identified. 
(3)   Portions of construction are eligible for federal funding. 
(4) In alignment with FAA's 5-year ACIP. 
Cons: 
(1)   Loss of synergy and coordination between airfield resources. 
(2)   Increased airport/airlines operational impacts with repeated closure of areas for
construction. 
(3)   Infrastructure CIP cost would be more than $42,100,000 due to the loss of synergies
between the programs. 
This is not the recommended alternative. 
Alternative  3   Replace  distressed  and  damaged  airfield  pavement  and  supporting
infrastructure for program period 2021  2025. 
Cost Implications: $156,300,000 
Pros: 
(1)   Programmatic  replacement  of  aged  and  distressed  pavements  and  related
infrastructures. 
(2)   Coordination between resource assets increases efficiencies and minimizes airport
and airline operational disruption and impacts during construction. 
(3)   Portions of construction are eligible for Federal Funding. 
(4) In alignment with FAA's 5-year ACIP. 
(5) Full program design authorization supports the Port's LEAN objectives by reducing
both time and document preparation for repeat design authorizations. 
Cons: 
(1)   Higher capital spending. 
(2)   Airport/Airline operational impacts during construction. 
This is the recommended alternative. 
FINANCIAL IMPLICATIONS 
Total  CIP  estimate  includes:  construction  bid  estimate,  design  development  allowance,
escalation, construction contingency, sales tax, maintenance and Port construction support,
soft costs, and project contingency.
The anticipated FAA grant reimbursement as detailed in the 2019 FAA ACIP is $49,400,000. The
pavement and utilities construction if packaged together as proposed by this program will have
an approximate FAA eligible cost of up to $81,000,000, should additional FAA grant funding
become available. 

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

COMMISSION AGENDA  Action Item No. _6c_                                 Page 6 of 7 
Meeting Date: October 22, 2019 
FAA eligible items are limited to bid items meeting FAA specifications within discernible,
previously identified apron and taxiway replacements. It excludes maintenance and repair,
individual panel replacements, force account, change orders, rapid-set, stand-alone utility
replacement, contingency, and sales tax.
Cost Estimate/Authorization Summary               Capital        Expense           Total 
COST ESTIMATE 
Original estimate                                $72,649,000               $0     $72,649,000 
Previous changes  net CIP transfers              ($15,200,000)                 0   ($15,200,000) 
Current change                                $98,851,000               0     $98,851,000 
Revised estimate                             $156,300,000                0   $156,300,000 
AUTHORIZATION 
Previous authorizations                            $295,000                0        $295,000 
Current request for authorization               $16,000,000                0     $16,000,000 
Total authorizations, including this request      $16,295,000                0     $16,295,000 
Remaining amount to be authorized          $140,005,000             $0   $140,005,000 
Annual Budget Status and Source of Funds 
This project C800930 Airfield Pavement Program was included in the 2019-2023 capital plan
with a cost estimate of $72,649,000. The revised estimate includes the overall airfield
pavement and support infrastructure program. The cost increase has been transferred from the
Aeronautical Reserve CIP (C800753); resulting in no net change to the Aviation capital budget.
The funding sources will be the Airport Development Fund, AIP grants, and revenue bonds. The
cost-per-enplanement calculation below assumes $49.4 million in AIP grants. 
Financial Analysis and Summary 
Project cost for analysis              $156,3000,000 
Business Unit (BU)                  Airfield Movement Area and Airfield Apron Area 
Effect on business performance     NOI after depreciation will increase 
(NOI after depreciation) 
IRR/NPV (if relevant)                N/A 
CPE Impact                        Approximately $0.07 annually, or $0.36 total by 2026 

ADDITIONAL BACKGROUND 
Previous five-year pavement replacement programs have focused on individual panel repairs
and replacement  all as part of the required pavement management program  but did not
serve as a holistic program for maintaining the overall airfield pavement system. Previous
program projects have not been covered by federal grant funding. Age has caught up with
Airport pavement and a more robust pavement replacement is now required above and beyond

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

COMMISSION AGENDA  Action Item No. _6c_                                 Page 7 of 7 
Meeting Date: October 22, 2019 
individual panel repair and replacement. Extensive review and identification of the 2021-2025
Airfield Pavement and Supporting Infrastructure Replacement Program is in alignment with and
has been submitted to the FAA's five-year ACIP look ahead program.
ATTACHMENTS TO THIS REQUEST 
(1)   Presentation slides 
PREVIOUS COMMISSION ACTIONS OR BRIEFINGS 
2016-2020 Pavement Replacement 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. 
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).

Limitations of Translatable Documents

PDF files are created with text and images are placed at an exact position on a page of a fixed size.
Web pages are fluid in nature, and the exact positioning of PDF text creates presentation problems.
PDFs that are full page graphics, or scanned pages are generally unable to be made accessible, In these cases, viewing whatever plain text could be extracted is the only alternative.