PORT OF SEATTLE 
MEMORANDUM 
COMMISSION AGENDA               Item No.      6b 
ACTION ITEM 
Date of Meeting     April 22, 2014 
DATE:    April 14, 2014 
TO:      Tay Yoshitani, Chief Executive Officer 
FROM:   Wayne Grotheer, Director, Aviation Project Manager Group 
Mike Ehl, Director, Aviation Operations 
SUBJECT:  Gate S1 Ramp at Seattle-Tacoma International Airport (CIP #C800629) 
Amount of This Request:     $1,185,000   Source of Funds:  Airport Development Fund 
Est. Total Project Cost:      $1,205,000 
Est. State and Local Taxes:     $57,000 
ACTION REQUESTED 
Request a single Commission authorization for the Chief Executive Officer to (1) authorize
design of a  passenger  ramp  for Gate S1 at Seattle-Tacoma International Airport;  (2)
competitively procure the ramp for Gate S1; and (3) use Port crews to construct and install the
ramp at Gate S1. This single authorization is for $1,185,000 of a total estimated project cost of
$1,205,000. 
SYNOPSIS 
The Airport is experiencing success in increasing international air service. Because of this
success, the schedule of international arrivals exceeds current widebody gate capacity during the
peak time of 11 a.m.  2 p.m. daily. To mitigate the shortage of gates, the Airport will begin
hardstand operations for some international arrivals, which will involve busing passengers from
remotely parked aircraft to the South Satellite for passport and customs clearance. Currently, the
only access to the International Corridor from the ramp level is covered stairs at Gate S1. This
requires passengers in  wheelchairs to  be escorted through a busy baggage handling area
underneath the satellite to access elevators into the Federal Inspection Services (FIS) area. This
request is to authorize the design and construction of an inclined walkway (a ramp) to provide an
Americans with Disabilities Act (ADA) compliant entrance to the South Satellite for all
passengers that need to be bused from hardstand arrivals. A single authorization is required in
order to design, procure, receive and install this ramp prior to the busy 2015 summer traffic
season. 
This project was included in the 2014 - 2018 capital budget and plan of finance with a budget of
$787,000. This authorization represents a project budget increase of $418,000. The 53 percent
budget increase is due to the need for this ramp to be a permanent installation rather than the

Template revised May 30, 2013.

COMMISSION AGENDA 
Tay Yoshitani, Chief Executive Officer 
April 14, 2014 
Page 2 of 5 
temporary installation as originally budgeted. Even after hardstand operations at the South
Satellite are no longer necessary, this ramp will continue to provide a means to access the South
Satellite in the unlikely event that the Satellite Transit System would be unavailable. 
BACKGROUND 
There are 11 widebody gates available at the South Satellite to accommodate international
arrivals. Widebody aircraft can carry in excess of 300 passengers including 10  30 wheelchair
passengers per flight.
During the summer months, current schedules show  peak gate demand for international
widebody gates at the South Satellite facility to be: 
14 on Saturdays 
13 five days a week 
12 one day a week 
The situation could become even more acute if any jet bridges are made unusable because of
equipment failure or conflict with ramp activities.
An ADA-accessible inclined walkway at S1 will: 
Reduce staffing levels (eliminate need for extra staff escorts to/from/in elevators); 
Provide a safer alternative for ADA passengers; 
Improve way finding for passengers by directing them to only one location; 
Improve compliance with Customs and Border Protection (CBP) regulations for keeping
international passengers contained in one route; 
Meet the demand of future hardstand arrivals and departures from cargo hardstands; 
Improve aesthetic appearance of route for passengers while maintaining an acceptable
level of service. 
PROJECT JUSTIFICATION AND DETAILS 
Hardstand operations for an international flight will need to move large numbers of passengers
(200-350) quickly and efficiently over the ramp. Without an ADA accessible inclined walkway 
at Gate S1, ADA passengers with their accompanying family members would require multiple
escorts to assist in getting into the elevators and into the FIS area, as well as traversing through
the South Satellite bagwell, which is a dangerous route for passengers due to tugs pulling
baggage carts through the area. 
Project Objectives 
Provide a single point of access for ambulatory and wheelchair passengers between the
ground level, international corridor, and concourse at the South Satellite. 
Improve safety and convenience for passengers.

COMMISSION AGENDA 
Tay Yoshitani, Chief Executive Officer 
April 14, 2014 
Page 3 of 5 
Provide a means of access for passengers into and out of the South Satellite during busing
for Satellite Transit System outages. 
Scope of Work 
At Gate S1, remove the extended fixed bridge and stairwell, add an ADA inclined walkway, and
add a tent for passengers to wait under during inclement weather. The project will add pavement
striping to delineate a bus path to and from the site. 
Schedule 
Begin design                     2nd Qtr 2014 
Begin procurement                3rd Qtr 2014 
ADA Inclined Walkway Fabrication     4th Qtr 2014 
Begin Construction                 1st  Qtr 2015 
Project complete                   2nd Qtr 2015 
FINANCIAL IMPLICATIONS 
Budget/Authorization Summary              Capital     Expense   Total Project 
Original Budget                       $787,000          $0     $787,000 
Budget increase                        $418,000          $0     $418,000 
Revised budget                      $1,205,000          $0    $1,205,000 
Previous Authorizations                   $20,000          $0      $20,000 
Current request for authorization            $1,185,000          $0    $1,185,000 
Total Authorizations, including this request     $1,205,000          $0    $1,205,000 
Remaining budget to be authorized               $0          $0          $0 
Total Estimated Project Cost              $1,205,000          $0    $1,205,000 
Project Cost Breakdown               This Request and Total Project 
Design Phase                                   $234,000 
Procurement Phase                               $524,000 
Construction Phase                                $447,000 
Total                                           $1,205,000 
Budget Status and Source of Funds 
The Gate S1 Ramp (CIP #C800629) was includedin the 2014-2018 capital budget and plan of 
finance with a budget of $787,000. A budget increase of $418,000 is  due to the need for this
ramp to be a permanent installation rather than the temporary installation as originally budgeted.
The budget increase will be transferred from the Aeronautical Allowance CIP #C800404
resulting in no net change to the Airport capital budget. The funding source for this project is the
Airport Development Fund.

COMMISSION AGENDA 
Tay Yoshitani, Chief Executive Officer 
April 14, 2014 
Page 4 of 5 
Financial Analysis and Summary 
CIP Category             Renewal/Enhancement 
Project Type              Renewal/Enhancement 
Risk adjusted discount rate     N/A 
Key risk factors             N/A 
Project cost for analysis        $1,205,000 
Business Unit (BU)          Terminal Building Cost Center 
Effect on business performance  NOI after depreciation will increase 
IRR/NPV             N/A 
CPE Impact             CPE will increase by $.01 in 2015, but no change to
business plan forecast as this project was included. 
Lifecycle Cost and Savings 
The life of this asset is estimated to be 15 years. We do not anticipate significant ongoing
maintenance costs. We do, however, anticipate performing refurbishment of the floors, ceiling
material and siding material approximately every 3 to 5 years depending on usage and weather. 
It is estimated that the cost of these refurbishments will range between $5,000-$7,000 per event.
STRATEGIES AND OBJECTIVES 
This project supports the Century Agenda objective to make Sea-Tac the West Coast "Gateway
of Choice" for international travel.  In order to advance this region as a leading tourism
destination and business gateway we need to give our traveling passengers a positive experience
when they arrive at Seattle-Tacoma International Airport. 
With our goal to double the number of international flights, we have outgrown our gates at the
South Satellite. By adding this much-needed infrastructure at Gate S1 we will be able to meet
the region's air transportation needs more efficiently by improving the flow of domestic and
international passengers. 
The project manager will coordinate with the Office of Social Responsibility to identify small
business opportunities. 
ALTERNATIVES AND IMPLICATIONS CONSIDERED 
Alternative 1)  Do nothing.  The current route for disabled passengers through the busy
bagwell to access elevators is not acceptable.  This route also separates passengers in
wheelchairs from others and requires extra staffing. This is not the recommended alternative. 
Alternative 2)  Construct an elevator at Gate S1. This alternative would cost substantially more
than an inclined walkway. This is not the recommended alternative.

COMMISSION AGENDA 
Tay Yoshitani, Chief Executive Officer 
April 14, 2014 
Page 5 of 5 
Alternative 3)  Separately authorize design and procurement/installation of a passenger ramp at
Gate S1. This alternative would require additional time to prepare a request for authorization and
thereby extend the scheduled completion of installation to late July 2015, during the peak
summer travel season. This is not the recommended alternative. 
Alternative 4)  Authorize design, procurement and installation of a passenger ramp as a single
authorization. This alternative will allow all passengers a safe and convenient way to access the
ramp level, International Corridor, and concourse when busing to and from the concourse is
necessary prior to the busy summer 2015 travel season. This is the recommended alternative. 
ATTACHMENTS TO THIS REQUEST 
Map of Proposed FIS Busing Plan Route 
PREVIOUS COMMISSION ACTIONS OR BRIEFINGS 
On February 25, 2014, the Commission was briefed on the anticipated need for hardstand
operations during the quarterly International Arrivals Facility update.