PORT OF SEATTLE 
MEMORANDUM 
COMMISSION AGENDA             Item No.      5c 
Date of Meeting    October 11, 2011 

DATE:    September 30, 2011 
TO:     Tay Yoshitani, Chief Executive Officer 
FROM:    Michael Ehl, Director, Airport Operations 
Wayne Grotheer, Director, Aviation Project Management Group 
SUBJECT:  Loading Bridges Utilities Gate Improvements (CIP # C800019) 
Amount of This Request: $6,144,000       Source of Funds: Airport Development Fund 
& 2010 Revenue Bonds 
State and Local Taxes Paid: $769,000      Jobs Created: 21 
Total Estimated Cost of Project: $12,883,000 
ACTION REQUESTED: 
Request Port Commission authorization for the Chief Executive Officer to advertise and execute
a major construction contract for the Loading Bridges Utilities Gate Improvements project at
Seattle-Tacoma International Airport (Airport) in the amount of $6,144,000 of the previously
authorized $12,883,000. 
SYNOPSIS: 
Currently, there are thirty-one (31) Port-controlled common use gates on Concourses A, B, C,
and D and the North and South Satellites. These gates vary in the amenities provided despite the
fact that the airlines are paying the same lease rate regardless of the amenities provided. This
project would bring all thirty-one Port-controlled gates up to the same standard, including 400Hz
ground power and potable water. This project has been coordinated with the air carriers involved
in the realignment program and with future aircraft requirements. This project also replaces 
outdated airline-owned 400Hz Motor Generators with Port-owned 400Hz Motor Generators,
simplifying operational and maintenance concerns. 
BACKGROUND: 
The current Signatory Lease and Operating Agreement allows for a One-Time Airline
Reallocation which grants the Airport the ability to reassign airline operations areas for better
utilization of the existing facility. The Airport has issued a notice of intent to exercise the One-
Time Airline Reallocation provision of the lease. Although this project is not related to that
effort, it has been coordinated to support airline consolidation, maximize operational efficiency,

COMMISSION AGENDA 
Tay Yoshitani, Chief Executive Officer 
September 30, 2011 
Page 2 of 5 
and meet the Airport and airlines' mutual interests in deferring significant capital expansion
costs. 
PROJECT JUSTIFICATION: 
The majority of work planned under this authorization represents a time critical component in
supporting the broader airline relocation effort while also providing improved operational
efficiency throughout the airport.
Project Objectives: 
Support the timely relocation of airlines 
Enable the Airport to gain more flexibility to maximize the use of each gate 
Extend the service life of each eligible gate for several more years through refurbishment of
major components and systems to increase reliability and reduce maintenance costs 
Reduce the possibility of a carrier being assigned to gates without the same amenities as its
current gates. 
Advance the Airport's goal of standardizing Airport-provided amenities at all gates
PROJECT SCOPE OF WORK AND SCHEDULE: 
Scope of Work: 
The scope of work for this project includes the replacement or refurbishment of equipment and
systems at up to 31 gates. This includes the replacement of existing equipment where necessary.
Purchase of airline owned 400Hz Motor Generators for this project as previously authorized by
the Commission on June 14th, 2011. Design and procurement of equipment was authorized by
the Commission on June 14, 2011. 
Schedule: 
Design                                       May  October 2011 
Advertise for Equipment Purchase                     October 2011 
Advertise Construction Bid Package                    November 2011 
Award Equipment Purchase Contract                   January 2012 
Award Construction Contract Bid Package                April 2012 
Construction Start                                  June 2012 
Construction Complete                            October 2013 
FINANCIAL IMPLICATIONS:
Budget/Authorization Summary: 
Original Budget                              $9,385,000 
Revised Budget                            $12,883,000 
Previous Authorizations                         12,883,000 
Current request for authorization                           $0 
Total Authorizations, including this request             $12,883,000 
Remaining budget to be authorized                       $0

COMMISSION AGENDA 
Tay Yoshitani, Chief Executive Officer 
September 30, 2011 
Page 3 of 5 
Project Cost Breakdown:               This Authorization: 
Construction costs                             $6,144,000 
Port furnished equipment and installation              $3,763,000 
Sales tax                                      $769,000 
Outside professional services                       $857,000 
Aviation PMG and other soft costs                  $1,350,000 
Total         $12,883,000 
Budget Status and Source of Funds: 
This project is included in the 2011-2015 capital budget and plan of finance within CIP
#C800019. The funding source will be the Airport Development Fund and existing 2010 bond
proceeds. 
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         $12,883,000 
Business Unit (BU)           Terminal  Airline Equipment 
Effect on business performance   NOI after depreciation will increase 
IRR/NPV              N/A 
CPE Impact              CPE will increase by $.09 by 2014, but no change
to the business plan forecast as this project was
included. The airlines will realize lower operating
and maintenance costs. 
Lifecycle Cost and Savings: 
The additional annual operating and maintenance costs associated with this project have been
calculated by Aviation Maintenance at approximately $10,000 per gate per year or a total of
$310,000 for the first year plus an estimated 3% inflation escalation thereafter. Based upon
actual costs for 2010 and budgeted costs for 2011 and beyond, additional future full time
equivalent (FTE) staff members will be required to maintain the added gates utility systems and
the future FTE's are included within the cost identified above.

COMMISSION AGENDA 
Tay Yoshitani, Chief Executive Officer 
September 30, 2011 
Page 4 of 5 
ENVIRONMENT AND SUSTAINABILITY:
The new and refurbished Gate Utilities will reduce the amount of man hours necessary for
maintaining and repairing the gates that have reached or exceeded their optimum design life.
The project will facilitate greater utilization of gates throughout the Airport, thus reducing the
potential need for, and the environmental impact of, major new and costly construction to
increase the total number of gates and associated hold rooms over time.
STRATEGIC OBJECTIVES: 
The Loading Bridges Utilities Gate Improvements Project supports two of the Port's Strategies
and Objectives, notably: 
This project promotes the Port's strategic goals to "Ensure Airport and Seaport Vitality" and "Be
a Catalyst for Regional Transportation Solutions" by providing the airlines with greater facility
flexibility. Flexible gate operations will allow for greater and more efficient utilization of the
Airport's existing facilities. 
The airline industry remains a very dynamic environment with ever-changing requirements.
Creating a flexible, common-use airport environment allows carriers and the Airport to spend
fewer capital dollars customizing facilities as market conditions change. Carriers are able to
share the same facilities without continual redesign and construction tailored to their specific
proprietary needs. This also increases total Airport through-put rates, within the existing
terminal footprint, as passenger volumes continue to increase. 
BUSINESS PLAN OBJECTIVES: 
This action supports three Airport business strategies. This authorization minimizes future cost
per enplanement charges by lowering overall maintenance costs, while also increasing capacity
of the terminal complex by enabling multiple airlines to use a common gate bridge that has
equivalent utilities found at other gates. In addition, having 400Hz at each gate will enable pilots
to turn off the aircraft auxiliary engine that will no longer exhaust fumes if the aircraft is plugged
into the 400Hz system.
TRIPLE BOTTOM LINE SUMMARY: 
This project supports the Airport's initiative to standardize equipment and provides the flexibility
the Airport needs to assign gates and to operate more efficiently. The traveling community will
also benefit from increased airline availability to modern, functional gate equipment. 
ALTERNATIVES CONSIDERED AND THEIR IMPLICATIONS: 
ALTERNATIVE 1:  Replace the utilities at up to 31 gates as described in order to optimize gate
flexibility, alleviate conflict between ownership and user, accommodate growth, and add further
Port-controlled gates into the inventory. This is the recommended action. 
ALTERNATIVE 2:  Do nothing: This would perpetuate the disparity in user charges across
Port-controlled gates and is a lost opportunity to reduce emissions and reduce facility flexibility.
This action is not recommended.

COMMISSION AGENDA 
Tay Yoshitani, Chief Executive Officer 
September 30, 2011 
Page 5 of 5 
OTHER DOCUMENTS ASSOCIATED WITH THIS REQUEST: 
None. 
PREVIOUS COMMISSION ACTION: 
On December 10, 2002, the Commission authorized $2,614,000 (CIP 102102) to replace and
upgrade the 400Hz system at the North Satellite. 
On June 4th, 2007, the Commission authorization $9,385,000 (CIP 800019) to replace the 400Hz
Ground Power systems at South Satellite and B Concourse and upgrade 29 Gates with 400Hz
equipment and Potable Water Cabinets. 
In 2008 this project along with several others was suspended due to financial and other economic
concerns. 
On June 14, 2011, the Commission authorized $12,883,000 (CIP 800019) to replace the 400Hz
Ground Power systems at South Satellite and B Concourse and upgrade 31 Gates with 400Hz
equipment and Potable Water Cabinets.