PORT OF SEATTLE 
MEMORANDUM 
COMMISSION AGENDA               Item No.       5e 
ACTION ITEM             Date of Meeting    May 28, 2013 

DATE:    May 20, 2013 
TO:      Tay Yoshitani, Chief Executive Officer 
FROM:   John Christianson, General Manager, Aviation Maintenance 
Wayne Grotheer, Director, Aviation Project Management Group 
SUBJECT:  Replacement of Passenger Loading Bridge (PLB) and Fixed Walkway at Gate S16 
(CIP #C800611) 

Amount of This Request:  $1,000,000     Source of Funds: Airport Development Fund 
Est. State and Local Taxes: $65,000       Est. Jobs Created: 14 
Est. Total Project Cost:    $1,000,000 
ACTION REQUESTED: 
Request a single Commission authorization for the Chief Executive Officer to (1) proceed with
design for the replacement of the passenger loading bridge (PLB) and fixed walkway at Gate
S16; (2) authorize execution of a contact to purchase a new PLB and fixed walkway to provide
as owner-furnished equipment (3) use Port crews to perform work related to the removal and
installation of the new PLB and fixed walkway at Gate S16 at Seattle-Tacoma International
Airport. The amount of this request is $1,000,000. 
SYNOPSIS: 
The existing PLB at Gate S16 is 30 years old and has experienced significant electrical and
control system problems over the past 20 months that could potentially lead to safety issues
and/or damage to aircraft using this gate.
Troubleshooting and correcting technical issues at S16 resulted in over $37,000 of urgent and
emergency repair costs on this PLB in 2012 alone; significantly greater than the annual average
repair cost per PLB projected by Aviation Maintenance. In addition, the unexpected downtime
experienced as a result of these various emergency repairs caused serious disruption to
international airline operations at the South Satellite. A single authorization for design,
procurement and installation is needed to replaced this PLB as soon as possible to avoid further
operational disruptions. 
This project was not included in the 2013  2017 capital budget and plan of finance. The budget
was transferred from the Aeronautical Allowance CIP, C800404, resulting in no net change to
the capital budget.

COMMISSION AGENDA 
Tay Yoshitani, Chief Executive Officer 
May 20, 2013 
Page 2 of 5 
BACKGROUND: 
PLBs are considered to have a service life of 25 years before major refurbishment or replacement
is required. The PLB and fixed walkway at Gate S16 were manufactured and installed in 1983.
Regular maintenance has been performed and interior finishes have been updated periodically 
over the past 30 years, but none of the PLB's major technical/operational systems have been
upgraded since it was originally installed. 
Replacement of the existing PLB and fixed walkway will take Gate S16 out of service for
approximately three weeks. A complete refurbishment would leave the gate inoperative for up to
12 weeks, which is unacceptable from an operational standpoint. 
After assessment by staff, it was determined that due to the high demand for aircraft gates with
access to the Federal Inspection Service facilities at the South Satellite, the PLB at Gate S16 is
not considered to be a good candidate for in-place refurbishment and it is recommended instead
that the PLB and associated fixed walkway be replaced with new.
It is likely that the existing S16 PLB can be fully refurbished off site for future installation at
another Airport gate and this decision will be finalized during the design phase of this project.
PROJECT JUSTIFICATION: 
The Port must provide safe and reliable equipment at the Airport's common use gates. While
Port staff continually strives to achieve this goal, the current unpredictable operational reliability
of the Gate S16 PLB due to its age leaves the Port at increased risk for potential damage to
aircraft using this gate.
Further, the operational failure of a PLB negatively affects operations and airline service while
significantly inconveniencing the traveling public and our tenant airlines. Gate S16 is one of five
common use gates at the South Satellite that is capable of accepting international wide body
aircraft. Having this bridge out of operation for even a short period of time significantly impacts
the Port's ability to safely and efficiently accommodate international passenger operations at the
South Satellite.
Project Objectives: 
The objectives of this project are: 
To provide safe and reliable equipment at the Airport's common use gates. 
To minimize unplanned PLB and gate downtime. 
To mitigate repair costs for Port-owned PLBs. 
PROJECT SCOPE OF WORK AND SCHEDULE: 
Scope of Work: 
Design for this scope of work to be procured under the existing PLB design services
IDIQ contract (P-00317063). 
Remove the PLB, associated fixed walkway and related components at Gate S16 by a
small works contractor.

COMMISSION AGENDA 
Tay Yoshitani, Chief Executive Officer 
May 20, 2013 
Page 3 of 5 
Purchase and installation of a new PLB, associated fixed walkway and related
components at Gate S16 along with necessary architectural, electrical, data and
mechanical infrastructure upgrades to meet new PLB standards and current code
requirements.
PCS will perform work associated with preparing the foundations for the PLB
replacement and construction management services should this be required.
A small works contractor will be responsible for installing and commissioning the new
PLB and fixed walkway, which will be provided as owner-furnished equipment.
Schedule: 
Activity                    Start            Finish 
PLB Design                        June 2013         July 2013 
PLB Bid and Award                   July 2013       September 2013 
PLB Installation                        October 2013      November 2013 
FINANCIAL IMPLICATIONS: 
Budget/Authorization Summary:              Capital    Expense      Total
Project 
Original Budget                       $1,000,000         $0  $1,000,000 
Previous Authorizations                        $0         $0        $0 
Current request for authorization              $1,000,000         $0  $1,000,000 
Total Authorizations, including this request      $1,000,000         $0  $1,000,000 
Remaining budget to be authorized                $0        $0        $0 
Total Estimated Project Cost               $1,000,000         $0  $1,000,000 
Project Cost Breakdown:                   This Request       Total Project 
Construction                               $805,700          $805,700 
Construction Management                     $39,100          $39,100 
Design                                   $49,000          $49,000 
Project Management                        $32,100         $32,100
Permitting                                  $7,100           $7,100 
State & Local Taxes (estimated)                   $67,000           $67,000 
Total                                    $1,000,000         $1,000,000 
Budget Status and Source of Funds: 
This project was not included in the 2013-2017 Capital Budget and Plan of Finance. A budget of
$1,000,000 was transferred from C800404 Aeronautical Allowance, resulting in no net change to
the Aviation capital budget. The funding source will be the Airport Development Fund.

COMMISSION AGENDA 
Tay Yoshitani, Chief Executive Officer 
May 20, 2013 
Page 4 of 5 
Financial Analysis and Summary: 
CIP Category                   Renewal/Enhancement 
Project Type                     Renewal & Replacement 
Risk adjusted discount rate            N/A 
Key risk factors                    N/A 
Project cost for analysis               $1,000,000 
Business Unit (BU)                 Terminal 
Effect on business performance         NOI after depreciation will increase 
IRR/NPV                   N/A 
CPE Impact                   CPE will increase less than $.01 in 2014. 
Lifecycle Cost and Savings: 
Staff does not anticipate a measurable change in the operating and maintenance costs for the S16
PLB and fixed walkway after the replacement as it is a like-for-like replacement and no
additional assets are being incorporated. 
STRATEGIC OBJECTIVES: 
This project will support the Port's Century Agenda objective of meeting the region's air
transportation needs at Sea-Tac Airport for the next 25 years by replacing critical assets. Given
that this PLB is used by international passengers, it also supports the objective of making Sea-
Tac Airport the west coast "Gateway of Choice" for international travel. 
ENVIRONMENTAL SUSTAINABILITY: 
This project will install a new PLB, associated fixed walkway and related equipment to replace
aging, less energy efficient equipment at Gate S16.
New PLBs employ the use of advanced electronics, materials and finishes that provide enhanced 
energy efficiency and improved air quality through: 
Installation of EnergyStar compliant equipment/components where applicable. 
Use of up to 30% pre-consumer recycled content in PLB flooring. 
Use of repurposed rubber from spent aircraft tires for PLB control cab bogies (under-cab
assemblies) 
Use of No/Low VOC (volatile organic compound) paints, adhesives and finishes wherever
possible.
Use of LED light fixture lamps in place of fluorescent lamps. 
Provision for increased passive ventilation in newly manufactured PLBs over older models.
BUSINESS PLAN OBJECTIVES: 
This project supports the Aviation Division's strategic goal to operate a world-class international
Airport by providing safe and secure operations, anticipating and meeting the needs of our tenants
and passengers and by managing Port assets to minimize the long-term total cost of ownership. 
Having an operationally reliable and aesthetically pleasing PLB and fixed walkway at Gate S16 is
advantageous to the Port as the premier gateway to and from the Northwest.

COMMISSION AGENDA 
Tay Yoshitani, Chief Executive Officer 
May 20, 2013 
Page 5 of 5 
TRIPLE BOTTOM LINE SUMMARY: 
This project demonstrates environmental sustainability by replacing outdated, inefficient and
unreliable PLBs. This will allow the Port to provide our tenants and the general public with the
updated, dependable and more efficient equipment that they need to support and grow their
business. The resulting improvement to the Port's PLB inventory will promote net operating
income through ongoing gate leases to airlines with a corresponding decrease in repair and
capital expenditures. Small contractors and suppliers in the local area will benefit from
increased opportunities to work at the Airport as a result of this scope of work. 
ALTERNATIVES CONSIDERED AND THEIR IMPLICATIONS: 
Alternative #1: Continue to Operate the PLB and Fixed Walkway at Gate S16 as-is. 
Delaying the replacement of the PLB at Gate S16, which has an increasing trend of mechanical
and electrical failures, will result in decreased safety, higher emergency maintenance costs, and
increased PLB downtime. This would result in reduced ability to accommodate international
flights as well as lost revenue, making this not a preferred alternative.
Alternative #2: Refurbish the PLB and Fixed Walkway at Gate S16. 
Perform a refurbishment in place of the PLB at Gate S16. This will provide a safe, high quality
facility for the Airport passengers and Airlines. It will also reduce repair costs and increase
operational reliability. It will, however, require that Gate S16 be out of service for 6 to 8 weeks
longer than the replacement option. As a result of the operational impact of this additional time
out of service, this is not a preferred alternative. 
Alternative #3: Replace the PLB and Fixed Walkway at Gate S16. 
Replacement of the PLB at Gate S16, which is at risk of future service interruptions, will provide
safe, high quality facilities for Airport passengers, reduced repair costs and increased operational
reliability and take Gate S16 out of operation for the shortest period of time possible. This is the
preferred alternative. 
OTHER DOCUMENTS ASSOCIATED WITH THIS REQUEST: 
None. 
PREVIOUS COMMISSION ACTIONS OR BRIEFINGS: 
None.