PORT OF SEATTLE 
MEMORANDUM 
COMMISSION AGENDA               Item No.       4f 
ACTION ITEM 
Date of Meeting    September 22, 2015 
DATE:    September 15, 2015 
TO:      Ted Fick, Chief Executive Officer 
FROM:   Dave Soike, Director, Aviation Facilities and Capital Programs 
Wayne Grotheer, Director, Aviation Project Management Group 
SUBJECT:  Concourse C New Power Center (CIP #C800724) 
Amount of This Request:        $1,900,000   Source of Funds:   2015 Revenue Bonds
and Future Bonds 
Est. Total Project Cost:         $10,500,000 
Est. State and Local Taxes:        $650,000 
ACTION REQUESTED 
Request Commission authorization for the Chief Executive Officer to (1) execute a design
contract and prepare design and construction bid documents for the Concourse C new power
center project at Seattle-Tacoma International Airport and (2) authorize the use of Port crews for
preliminary work in support of this project. The total value of this request is $1,900,000 of an 
estimated total project cost of $10,500,000. 
SYNOPSIS 
This project will install a new power center and new electrical distribution panels in Concourse
C near the C10/12 gates in a new electrical room. The project will rectify three current problems
in Concourse C. 
First, the existing Power Center on Concourse C is close to maximum capacity. We will
need additional capacity on Concourse C in order to support future projects that include
electrified equipment. 
Second, the Fire Zones in Concourse C will be restored by re-feeding existing equipment
from the new Power Center. This will provide a safer environment for emergency
responders in the event of a fire. 
Third, obsolete equipment on Concourse C will be replaced with new, serviceable
equipment. Some existing equipment is no longer maintainable (no spare parts) and is
also not expandable to allow for power for new projects. 
This improvement will not be adversely affected by future development recommended as part of
the Sustainable Airport Master Plan (SAMP). This project has been approved by the airlines. 

Template revised May 30, 2013.

COMMISSION AGENDA 
Ted Fick, Chief Executive Officer 
September 15, 2015 
Page 2 of 7 
BACKGROUND 
The existing Concourse C power center is nearly at capacity and does not have adequate 
remaining reserve capacity for projected future electrical power loads on Concourse C. The
existing electrical distribution on Concourse C is not in compliance with fire zones defined by
the Port Fire Department. This could result in delays and complications in responding to a fire. In
addition, some of the distribution equipment at the end of Concourse C is outdated and obsolete.
There are no parts available to repair the equipment in the event of a failure, and as the
equipment approaches end of life, the likelihood of failure increases. 
This project will install a new power center in the North end of Concourse C. This will support
future projects on Concourse C including  increased utilization and deployment of 400Hz
Aircraft ground power, Pre-Conditioned Air, Electric Ground Service Equipment (eGSE)
charging stations, future airline tenant utilization of mezzanine space, increased operational
needs including ramp level hold rooms, and new retail and dining needs to meet growing traveler
demand. 
Existing distribution equipment will be re-fed from the new Power Center, thus re-establishing
the Fire Zones. The purpose of the fire zones is to have all electrified equipment within a zone
fed from a single source within that zone. Currently several distribution panels are fed from the
C1 building. This project will remove the feeds from the C1 Power Center and re-route them to
the new Power Center (which will also free up capacity on the C1 power center for the Baggage
Optimization Project and for future C1 building expansion.) This will create a new fire zone for
all power derived from the Concourse C new power center providing a means to readily isolate
all normal electrical power and therefore minimize a hazardous condition for the Fire
Department in the event of a fire in this fire zone. 
The existing electrical distribution equipment at the North end of Concourse C is also near rated
capacity and some of the equipment is obsolete. This project will add new distribution equipment
and will replace the obsolete equipment. The obsolete equipment is of particular worry because 
parts are no longer manufactured and if there is a failure with this equipment, we could face an
extended power outage as we scramble to find alternate sources of power for the equipment and
tenants it serves. The new distribution equipment will provide electrical infrastructure to support
new projects at the north end of Concourse C. Finally, electrical loads at the North end of 
Concourse C that are currently fed from the C1 power center will be refed from the Concourse C 
new power center. The fire zones are established such that all electrified equipment within a fire
zone is fed by a source within that same zone, allowing the fire department to shut off power to
everything in the zone at one location. 
This project was submitted to the airlines for a majority-in-interest vote.  The project was
approved.

COMMISSION AGENDA 
Ted Fick, Chief Executive Officer 
September 15, 2015 
Page 3 of 7 
PROJECT JUSTIFICATION AND DETAILS 
Outages and associated flight delays have already occurred as a result of inadequate power
capacity. Concourse C is near maximum capacity for electrical power. This can result in reduced
asset life and power outages due to overloaded equipment, causing a disruption in operations.
Additionally, the Airport will be unable to implement any project on Concourse C that will
require the installation of new equipment with electrical requirements because no power will be
available. 
Staff expects that the existing Concourse C power center will not be able to meet operational
requirements within the next three years. Electrical installations of this type typically take two
years to complete and that is our project schedule. This project will install a new power center 
that will allow the Airport to provide reliable electrical power on the north end of Concourse C
and meet current and future electrical power needs for this area. 
Project Objectives 
This project has three main objectives: 
Ensure adequate power capacity on Concourse C. 
Prevent equipment failures and extended unplanned outages. 
Rectify the fire zones to allow for increased safety in the event of a fire. 
Scope of Work 
Install a new 5000A rated power center in a new electrical room on the north end of
Concourse C. Install two (2) 1600A distribution panels, two 75kVA transformers and two
(2) 225A rated branch circuit panels. Provide HVAC for new electrical room. 
Replace two (2) 600A tenant distribution panels in the 41D electrical room. 
Refeed three (3) existing electrical panels in the 41D electrical room from the new power
center. 
Install electrical required metering for new distribution feeders and panels, per Port 
standards and per State of Washington energy code requirements. 
Replace/upgrade existing lighting and fire sprinkler systems in new electrical room. 
Combine with eGSE project power centers if economical to do so. 
Schedule 
Start Design                                      4th Quarter 2015 
Complete Design                              1st Quarter 2016 
Commission Authorization for Construction               1st Quarter 2016 
Advertise for Construction                            1st Quarter 2016 
Substantial Construction Complete                      4th Quarter 2017

COMMISSION AGENDA 
Ted Fick, Chief Executive Officer 
September 15, 2015 
Page 4 of 7 
FINANCIAL IMPLICATIONS 
Budget/Authorization Summary              Capital     Expense   Total Project 
Original Budget                      $9,850,000     $250,000   $10,100,000 
Budget Increase/(Decrease)                $595,000    ($195,000)     $400,000 
Revised Budget                     $10,445,000      $55,000   $10,500,000 
Previous Authorizations                   $75,000          $0      $75,000 
Current request for authorization            $1,900,000          $0    $1,900,000 
Total Authorizations, including this request     $1,975,000          $0    $1,975,000 
Remaining budget to be authorized          $8,470,000      $55,000    $8,525,000 
Total Estimated Project Cost              $10,445,000      $55,000   $10,500,000 
Project Cost Breakdown                     This Request       Total Project 
Design Phase                             $1,900,000         $1,900,000 
Construction Phase                                $0         $7,950,000 
State Taxes                                      $0          $650,000 
Total                                      $1,900,000         $10,500,000 
Budget Status and Source of Funds 
The expense portion of the budget is for regulated materials management costs. This project (CIP
#C800724) was included in the 2015-2019 capital and budget and plan of finance with a budget
of $9,850,000. The budget increase of $595,000 is a result of increasing the capacity of the
power center from 3200A to 5000A, of adding metering costs and adding commissioning cost
into the project budget. This will be transferred from the Aeronautical Allowance CIP (C800404)
resulting in no net change to the Airport's capital budget. The funding source for this project will
include 2015 revenue bonds and future bonds. 
Financial Analysis and Summary 
CIP Category             Renewal/Enhancement 
Project Type              Infrastructure Upgrade 
Risk adjusted discount rate     N/A 
Key risk factors             N/A 
Project cost for analysis        $10,500,000 
Business Unit (BU)          Terminal Building 
Effect on business performance  NOI after depreciation will increase 
IRR/NPV             N/A 
CPE Impact             $.04 increase in 2018 
Lifecycle Cost and Savings 
This project will increase electrical power capacity for Concourse C, increase availability of
electrical power for future loads, reduce power outages, improve the electrical system reliability

COMMISSION AGENDA 
Ted Fick, Chief Executive Officer 
September 15, 2015 
Page 5 of 7 
and will not appreciably increase the number of preventative maintenance activities performed
on the electrical system. 
STRATEGIES AND OBJECTIVES 
The project supports the Port's Century Agenda objective of meeting the region's air
transportation needs at Sea-Tac International Airport for the next 25 years by increasing
electrical capacity and improving electrical safety. It also supports the Airport's strategic goal of
operating a world-class international airport by ensuring enhanced utility reliability. 
This project is not adversely affected by the Airport's Sustainable Airport Master Plan. 
ALTERNATIVES AND IMPLICATIONS CONSIDERED 
Alternative 1)  Maintain the status quo. Do nothing.
Capital cost: $0 
Pros: 
No additional capital cost. 
Cons: 
This alternative does not provide electrical power for capacity growth of Concourse C. 
If no action is taken, the existing power center will operate at maximum electrical power
capacity, increasing the risk of system overloading and power outages. 
This is not the recommended alternative. 
Alternative 2) Expand capacity of existing Concourse C Power Center. This would involve
replacing the existing 3200A rated Power Center with a new 5000A rated Power Center. 
Capital cost: $10,500,000. 
Pros: 
None 
Cons: 
Existing room is too small to accommodate larger Power Center. The existing room
would need to be expanded or a new room created. This option was evaluated in 2005
when existing switchgear was replaced. 
Provides 1800A additional capacity, which may not be adequate for future growth. If C1
loads are transferred to re-establish fire zone, additional capacity is reduced to 800A. 
Distribution equipment at north end of Concourse C is still close to capacity. New
distribution equipment will still need to be added, including new electrical room to house
new equipment. Existing electrical room at Concourse C north is full. 
This is not the recommended alternative.

COMMISSION AGENDA 
Ted Fick, Chief Executive Officer 
September 15, 2015 
Page 6 of 7 
Alternative 3)  Install a smaller power center and do not upgrade obsolete equipment. 
Capital cost: $9,000,000. 
Pros: 
We would realize some cost savings with a smaller power center, and there would be
savings in not replacing the outdated distribution equipment. 
This alternative will provide short term electrical capacity for the North end of Concourse C. 
Cons: 
This alternative does not provide electrical power for long term capacity growth of
Concourse C. 
The cost savings for a smaller non-Port standard commercial grade power center are
nominal. 
We would likely realize Arc Flash safety requirements and face power capacity issues on
Concourse C in the next few years. 
We will also be unable to accommodate tenants if existing tenant spaces desire to change
usage and have greater power requirements. 
If the obsolete distribution panels are not replaced, we risk equipment failure and
unplanned outages. 
This is not the recommended alternative. 
Alternative 4)  Install a new power center in Concourse C. This will meet the current needs of
the Airport and allow for future growth on Concourse C. 
Capital cost: $10,500,000. 
Pros: 
This alternative will provide the best solution in providing additional electrical power
capacity for future growth on all of Concourse C. 
This alternative will provide the following: 
o  Capacity for future growth on all of Concourse C. 
o  A robust and reliable distribution system on Concourse C. 
o  Infrastructure to support future tenant projects and airline utilization equipment at
the north end of Concourse C. 
o  Re-establish the fire zones and eliminate a hazardous situation in the event of an
emergency. 
Cons: 
Large capital project required to build out this new electrical infrastructure facility. 
Most expensive option. 
This is the recommended alternative. 
ATTACHMENTS TO THIS REQUEST 
Presentation slides.

COMMISSION AGENDA 
Ted Fick, Chief Executive Officer 
September 15, 2015 
Page 7 of 7 
PREVIOUS COMMISSION ACTIONS OR BRIEFINGS 
None