COMMISSION 
AGENDA MEMORANDUM                        Item No.          8j 
ACTION ITEM                            Date of Meeting      March 14, 2023 

DATE:     March 6, 2023 
TO:        Stephen P. Metruck, Executive Director 
FROM:    Keri Stephens, Director Aviation Facilities and Capital Programs 
Eileen Francisco, Director Aviation Project Management Group 
SUBJECT:  Landside Pavement Program (LPP) (C801042)
Amount of this request:               $5,220,000 
Total estimated project cost:         $10,000,000 
ACTION REQUESTED 
Request Commission authorization for the Executive Director to (1) authorize $1,360,000 to
proceed with the design and preparation of contract bid documents for the Landside Pavement
Program project located at Seattle-Tacoma International Airport, (2) authorize $3,860,000 for the
construction of pavement rehabilitation scope as part of the Widen Arrivals Roadway major work
construction contract. The total amount requested for authorization is $5,220,000 and the total
estimated project cost is $10,000,000 for the Landside Pavement Program.
EXECUTIVE SUMMARY
The Landside Pavement Program will implement a series of pavement rehabilitation projects that
supports the Port’s Century Agenda strategy to position the Puget Sound region as a premier
international logistics hub, by maintaining one of the most basic of the facilities infrastructure
assets, pavement.  This authorization request supports the initiation of the program and the
implementation of the first phase that will address pavement prioritized by condition.  The
project will also take advantage of a pavement preservation grant from the Puget Sound Regional
Council (PSRC). 
JUSTIFICATION
This project supports the following Century Agenda strategic goals and objectives: 
1)  Advance this region as a leading tourism destination and business gateway by meeting
the region’s air transportation needs at the Airport for the next 25 years. 
2)  Use the Port’s influence as an institution to promote women and minority business
enterprise (WMBE) growth through Resolution 3737 – Diversity in Contracting WMBE
aspirational goals, small business growth, and workforce development by increasing the

Template revised January 10, 2019.

             COMMISSION AGENDA – Action Item No. 8j                                   Page 2 of 5
Meeting Date: March 14, 2023
proportion of funds spent by the Port with qualified firms on construction, consulting,
goods, and services. 
Replacing distressed pavement and supporting infrastructure on the landside supports the longterm
strategy of the Port’s Century Agenda objective to “advance this region as a leading tourism
destination and business gateway by meeting the region’s air transportation needs at the Airport
for the next 25 years.” The Landside Pavement Program maintains the integrity of SEA landside
pavements and enables efficient airport operations.
Diversity in Contracting 
The design of this project will utilize an existing indefinite delivery indefinite quantity (IDIQ)
contract that has an WMBE commitment of fifteen percent. The project team will work with
Diversity in Contracting department to establish additional WMBE aspirational goals within the
construction phase of this effort. 
DETAILS 
The SEA Landside pavement and roadway system consists of 2.5 million square feet of pavement.
The Landside Pavement Program will rehabilitate portions of these SEA landside pavements over
time. The goal of the Landside Pavement Program is to assess pavement conditions (such as
cracks, potholes, rutting and other distresses) by periodically performing a pavement condition
index (PCI) survey, assign a remaining service life, provide a 10-year pavement maintenance and
rehabilitation project plan to maintain a minimum pavement condition at the lowest total cost
of ownership, and to deliver the improvements in the most economical way, as either a standalone
project or combined with other projects in the Aviation capital program. Work will include 
pavement rehabilitation (overlay or replacement depending upon condition), removal of
abandoned utilities within the work areas, enhancements to related surface water drainage
facilities, and improvements to meet required code or standards for other ancillary facilities (e.g.,
signage, lighting, sidewalks, bicycle lanes).
Aviation Facilities and Infrastructure developed a formal Landside Pavement Program in
collaboration with the Aviation Project Management Group. In 2021, staff completed an initial 
inspection of the landside pavements to establish a PCI rating.  These PCI ratings are used to
identify and prioritize pavement renewal and replacement to maximize their service life at the
lowest total cost of ownership. The goal is to maintain all pavements at a PCI of 70 or higher.
In 2022 the Port of Seattle was awarded a PSRC pavement preservation grant to address the
rehabilitation of a portion of the northbound Northern Airport Expressway. 
Scope of Work
This initial phase of the Landside Pavement Program includes the reconstruction of the south
parking entrance between the ticket dispensers and the helix entrances, and the rehabilitation
of landside pavements in the worst condition. These include the following: 

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

             COMMISSION AGENDA – Action Item No. 8j                                   Page 3 of 5
Meeting Date: March 14, 2023
(1)   Southbound Northern Airport Expressway (from S 170th St to the Departures/Arrivals
decision point) 
(2)   Air Cargo Rd (from the North Entrance of the Service Tunnel to S 170th St) 
(3)   S 190th St (from 28th Ave S to the parking lot entrance, and by the fuel farm within the
parking lot) 
(4)   Starling Dr (from S 188th St to airfield access gates 
(5)   S 160th St (from Air Cargo Rd to City right-of-way limits) 
(6)   Northbound Northern Airport Expressway (Arrivals curbside/S 182nd St entrance to
northbound lanes) 
Staff reviewed projects in the Aviation capital program to identify opportunities for more
economical scope delivery, reducing multiple operational impacts and avoiding costly rework.
Two projects were identified that would support the delivery of this initial phase of the Landside
Pavement Program.  The Widen Arrivals Roadways project will complete the pavement
rehabilitation scope on Air Cargo Rd and southbound Northern Airport Expressway and is
included in this authorization request. The 1947 Watermain Improvements project is planned to
deliver the pavement rehabilitation scope for northbound Northern Airport Expressway and will
be included in a future authorization request. 
Schedule
The following schedule is for the work to be completed as part of the Landside Pavement
Program and does not reflect the work to be performed as part of the Widen Arrivals Roadways
or 1947 Watermain Improvements projects.
Design start                                       2023 Quarter 1 
Commission construction authorization          2024 Quarter 1 
Construction starts                               2024 Quarter 2 
In-use date                                       2024 Quarter 4 
Cost Breakdown                                     This Request           Total Project 
Design                                                  $1,360,000                     $0 
Construction                                             $3,860,000             $4,630,000 
Total                                                         $5,220,000             $10,000,000 
ALTERNATIVES AND IMPLICATIONS CONSIDERED 
Alternative 1 – Do nothing. 
Cost Implications: $55,000 
Pros:
(1)   Capital investment not required. 

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

             COMMISSION AGENDA – Action Item No. 8j                                   Page 4 of 5
Meeting Date: March 14, 2023
Cons:
(1)   Does not address failing pavements and would likely lead to more costly “total
reconstruction” projects in the future or major disruptions to airport operations.
(2)   Fails to take advantage of a PSRC grant for the rehabilitation of a portion of the
northbound Northern Airport Expressway.
(3)   The project costs to date would need to be expensed. 
This is not the recommended alternative. 
Alternative 2 – Address all distressed pavement outlined in the Landside Pavement Program.
Cost Implications: $20,000,000 
Pros:
(1)   Addresses all pavements with PCI rating of less than 70 and the south parking entrance.
(2)   Takes advantage of PSRC grant funding for the rehabilitation of a portion of the
northbound Northern Airport Expressway.
(3)   Leverages other on-going construction projects to implement pavement rehabilitation
scope reducing overall program costs. 
Cons:
(1)   Greater overall capital investment in the short-term. The project budget was originally
reduced due to the financial impacts from COVID-19. 
This is not the recommended alternative. 
Alternative 3 – Address distressed pavements within current budget. 
Cost Implications: $10,000,000 
Pros:
(1)   Lower overall capital investment in the short-term. 
(2)   Addresses pavements in the worst condition and the south parking entrance. 
(3)   Leverages other on-going construction projects to implement pavement rehabilitation
scope reducing overall program costs. 
Cons:
(1)   Does not address all pavements requiring rehabilitation. This alternative would require
a future request for the next programmed phase of the Landside Pavement Program in
the near term.
This is the recommended alternative. 



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

             COMMISSION AGENDA – Action Item No. 8j                                   Page 5 of 5
Meeting Date: March 14, 2023
FINANCIAL IMPLICATIONS 
Cost Estimate/Authorization Summary              Capital        Expense           Total 
COST ESTIMATE 
Original estimate                                $20,000,000               $0     $20,000,000 
Previous changes – net                       ($10,000,000)               $0   ($10,000,000) 
Revised estimate                               $10,000,000              $0     $10,000,000 
AUTHORIZATION 
Previous authorizations                            $150,000               $0        $150,000 
Current request for authorization                $5,220,000               $0      $5,220,000 
Total authorizations, including this request       $5,370,000               $0      $5,370,000 
Remaining amount to be authorized            $4,630,000             $0     $4,630,000 
Annual Budget Status and Source of Funds 
This project (CIP #C801042) was included in the 2023-2027 capital budget and plan of finance
with a budget of $10,000,000. The funding sources will be grants, Airport Development Fund
(ADF) and revenue bonds. The PSRC pavement preservation grant will reimburse up to $638,000
of the project costs.
Financial Analysis and Summary 
Project cost for analysis              $10,000,000 
Business Unit (BU)                  Roadways 
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                       $0.02 in 2025 
Future Revenues and Expenses (Total cost of ownership) 
This project will benefit the Total Cost of Ownership (TCO) by reducing Aviation Maintenance’s 
annual operating and maintenance (O&M) costs. 
ATTACHMENTS TO THIS REQUEST 
(1)   Presentation slides
PREVIOUS COMMISSION ACTIONS OR BRIEFINGS 
None 


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