PORT OF SEATTLE 
MEMORANDUM 
COMMISSION AGENDA               Item No.       4f 
ACTION ITEM 
Date of Meeting      July 1, 2014 
DATE:    June 23, 2014 
TO:      Tay Yoshitani, Chief Executive Officer 
FROM:   David Soike, Director, Aviation Facilities and Capital Program 
Wayne Grotheer, Director, Aviation Project Management Group 
SUBJECT:  Feeder 101 Taps Replacement (CIP #C800234)/Fire Station Electrical Upgrade
(CIP #800479) 
Amount of This Request:    $3,929,000       Source of Funds:  Airport Development 
Fund 
Est. Total Project Cost:      $4,775,000 
Est. State and Local Taxes:   $261,000 
ACTION REQUESTED 
Request Commission authorization for the Chief Executive Officer to (1) transfer budget and
combine the Feeder 101 Taps Replacement Project (CIP #C800234) with the Fire Station
Electrical Upgrade Project (CIP #C800479) into a single CIP; and (2) advertise, award, and
execute a major public works contract for the combined project. The amount of this request is
$3,929,400 of a total estimated project of $4,775,000.
SYNOPSIS 
The Feeder 101 Taps Replacement Project will replace components of the electrical system that
feeds power to the north end of the Airport that includes cargo warehouse, aircraft areas, and
Airport maintenance areas. Feeder 101 is the main feeder cable that supplies electric power to
the various facilities along Air Cargo Road. There are 13 taps (the connection to the main feeder
and the service cable that serves each facility) that have reached or passed their useful life. The
taps must be replaced to ensure the feeders can supply electrical power in a reliable manner. The
Feeder 101 Taps Replacement project also removes and replaces the existing unit substation at
Air Cargo 4 (Port of Seattle Maintenance Facility) which is approximately 40 years old. This
existing feeder tap and the unit substation have passed their useful lives and must be replaced to
maintain a safe, dependable power system.
The Fire Station Electrical Upgrade Project upgrades an aging electrical infrastructure. The
existing system is over 40 years old and at capacity. In order to maintain a reliable and adequate
source of power for current as well as future needs, the power service to the station must be
renewed and replaced. This project would install a new service, switchgear, and an emergency
generator.

Template revised May 30, 2013.

COMMISSION AGENDA 
Tay Yoshitani, Chief Executive Officer 
June 23, 2014 
Page 2 of 7 
The Feeder 101 Taps Replacement Project and the Fire Station Electrical Upgrade Project
include similar scope items. Combining the projects into a single construction contract will allow
for cost savings. The current estimate for the Feeder 101 Taps portion of the combined project is
$362,300 less than originally estimated, whereas the Fire Station portion has increased by
$398,700. The net result is an increase of $36,400 for the combined projects. Potential savings
due to shared overhead, possible lower equipment costs, and economy of scale bidding could
result in a reduction of the overall cost of the project. However, possible savings cannot be
accurately quantified at this time. In addition, a single CIP generally allows for easier internal
tracking and reporting on the combined project. 
Both projects are included in the 2014-2018 capital budget and plan of finance. 
BACKGROUND 
When Feeder 101 was replaced by a previous project a decade ago, the existing medium voltage
feeder taps were left for future replacement. The remaining taps are in excess of 40 years old
and have passed their useful life. The projected life of the existing feeder taps is approximately
30 years. The taps must be replaced to maintain a reliable and safe system. New taps will have a
projected life of 30 years. The Port Maintenance Building is served by Feeder 101. The feeder
tap will be replaced as part of this project; however, the unit substation is over 40 years old. The
projected life of the original equipment is 40 years. Replacement parts are no longer available
for the unit. A failure of any of the components will shut down power to the building. A
replacement unit can take up to 18 months to be delivered.  Replacing the unit on a
predetermined schedule will save downtime and be less costly. The new equipment will have a
projected life of 40 years. The new unit substation (transformer and switchgear) will not fit in
the existing Port Maintenance Building electrical room due to current code requirements. The
transformer will be removed from the building's electrical room and replaced with a new,
outdoor, pad-mounted 1000/1500 kVA transformer. New 480V switchgear will be placed in the
existing electric room. This allows the installation of equipment per current code. This also
allows staff to properly phase construction to minimize the use of temporary measures and down
times. 
The source of electrical power to the Fire Station is provided through a 300 kilovolt amps (kVA)
120/208 volt (V) transformer and switchgear. The existing equipment is a decade beyond its
predicted life, is loaded to its capacity, and therefore has caused circuit breaker outages at the
Fire Department.
The existing 120/208V transformer and switchgear will be replaced with equipment with an
increased capacity and a new generator will be added. The new generator will serve the entire
facility enabling the Fire Station to be fully operational during an emergency and will allow for
the addition of future loads. This project will also add 480V power to meet current and future
electrical upgrades as well as provide for a future Fire Station Heating, Ventilation, Air
Conditioning (HVAC) project to address HVAC deficiencies.

COMMISSION AGENDA 
Tay Yoshitani, Chief Executive Officer 
June 23, 2014 
Page 3 of 7 
If authorized, the Feeder 101 Taps Replacement project will be combined with the Fire Station
Electrical Upgrade project into one construction contract with one CIP. Both projects have
similar medium voltage equipment requirements and are tied to Feeder 101. The projects require
a medium voltage contractor, they replace and/or upgrade the existing electrical service to a
building, and they both replace feeder taps along feeder 101 along Air Cargo Road.  Combining
the projects may provide an advantage of potential cost efficiencies.
The Feeder 101 Taps Replacement Project was previously authorized for design by Commission
on January 22, 2013. The Fire Station Electrical Upgrade Project was authorized for design by
Commission on May 14, 2013. 
PROJECT JUSTIFICATION AND DETAILS 
The existing feeder taps, the Port Maintenance unit substation, and the Fire Station electrical
service are all past their projected lives. The equipment is no longer reliable or safe and must be
replaced.
Replacing the electrical equipment in a controlled manner will save the Port potentially long
downtimes as well as controlling costs. 
Project Objectives: 
Replace the existing taps and feeders along Air Cargo Road. 
Replace the existing electrical service to the Port Maintenance Building. 
Replace the existing electrical service to the Fire Station. 
Provide a safe reliable system with a life of at least 30 years. 
Minimize downtime and disruption to tenants. 
Complete project on time and within budget. 
Scope of Work: 
The Scope of Work includes the following elements: 
Port Crews support access to electrical rooms and vaults. 
Port Crews support utility shut-downs. 
Port Crews will manage any incidental regulated materials management. 
Demolition of existing feeder taps and electrical service equipment. 
Install new feeder taps to the facilities along Air Cargo Road 
o  Replace the feeders with a projected life of at least 30 years. 
Install a new electrical service for the Port Maintenance Building: 
o  Replace the existing transformer and switchgear. 
o  Replace the unit substation. 
o  Replace the displaced parking spaces. 
Install a new electrical service for the Fire Station: 
o  Replace the existing transformer.

COMMISSION AGENDA 
Tay Yoshitani, Chief Executive Officer 
June 23, 2014 
Page 4 of 7 
o  Add 480V power, and add a backup generator for the Fire Station. 
o  Replace the displaced parking spaces. 
Make provisions for temporary power during construction. 
Coordinate electrical shut-downs with the tenants on Air Cargo Road. 
Schedule: 
Commission Authorization to Advertise for Construction  July 1, 2014 
Start Construction October 2014 
Construction Complete  May 2015 
FINANCIAL IMPLICATIONS 
Feeder 101 Taps Replacement 
Budget/Authorization Summary         Capital      Expense     Total Project 
Original Budget                      $1,000,000          $0    $1,000,000 
Previous Budget Increase                $1,646,000      $60,000    $1,706,000 
Current Budget Increase/Decrease           ($302,300)     ($60,000)    ($362,300) 
Current Revised Budget                  2,343,700          $0     2,343,700 
Previous Authorizations                  $500,000          $0     $500,000 
Current request for authorization            $1,843,700          $0    $1,843,700 
Total Authorizations, including this request     $2,343,700          $0    $2,343,700 
Remaining budget to be authorized               $0          $0          $0 
Total Estimated Project Costs              $2,343,700          $0    $2,343,700 
Fire Station Electrical Upgrade 
Budget/Authorization Summary         Capital      Expense     Total Project 
Original Budget                      $2,033,000          $0    $2,033,000 
Previous Budget Increase                      $0          $0          $0 
Current Budget Increase/Decrease            $398,700          $0     $398,700 
Current Revised Budget                 $2,431,700          $0    $2,431,700 
Previous Authorizations                  $346,000          $0     $346,000 
Current request for authorization            $2,085,700          $0    $2,085,700 
Total Authorizations, including this request     $2,431,700          $0    $2,431,700 
Remaining budget to be authorized               $0          $0          $0 
Total Estimated Project Cost              $2,432,000          $0    $2,432,000 
Feeder 101 Taps Replacement/Fire Station Electrical (combined) 
Budget/Authorization Summary         Capital      Expense     Total Project 
Original Budget                      $3,033,000          $0    $3,033,000 
Previous Budget Increase                $1,646,000      $60,000    $1,706,000 
Current Budget Increase/Decrease             $96,400     ($60,000)      $36,400 
Current Revised Budget                 $4,775,400          $0    $4,775,400

COMMISSION AGENDA 
Tay Yoshitani, Chief Executive Officer 
June 23, 2014 
Page 5 of 7 
Previous Authorizations                  $846,000          $0     $846,000 
Current request for authorization            $3,929,400          $0    $3,929,400 
Total Authorizations, including this request     $4,775,400          $0    $4,775,400 
Remaining budget to be authorized               $0          $0          $0 
Total Estimated Project Cost              $4,775,400          $0    $4,775,400 
Project Cost Breakdown              This Request        Total Project 
Design Phase                                  $0          $846,000 
Construction Phase                          $3,668,400         $3,668,400 
State & Local Taxes                           $261,000          $261,000 
$3,929,400         $4,775,400 
Budget Status and Source of Funds 
The Feeder 101 Taps Replacement Project, CIP #C800234 and the Fire Station Electrical
Upgrade CIP #C800479 are bothincluded in the 2014-2018 capital budget and plan of finance 
with a combined budget of $4,739,000. Certain project costs will be tracked separately for
transparency to be eventually applied to the utility and terminal business cost centers. The budget
increase is $36,400. The budget increase is due to escalation in prices for electrical equipment.
This increase will be transferred from the Aeronautical Allowance CIP (C800404) resulting in no
net change to the Airport capital budget. The funding sources are Airport Development Fund
(ADF) and future bond proceeds. The Port anticipates issuing revenue bonds in late 2014 or
early 2015 to fund multiple projects. 
Financial Analysis and Summary 
CIP Category             Renewal/Enhancement 
Project Type              Airport Infrastructure 
Risk adjusted discount rate     N/A 
Key risk factors             N/A 
Project cost for analysis        $4,775,000 
Business Unit (BU)          $2.343 million for Electrical Utility 
$2.432 million Fire (primarily allocated to Airfield
Movement Area) 
Effect on business performance  NOI after depreciation will increase due to cost recovery
of investments. 
IRR/NPV             N/A 
CPE Impact             $.01 increase in 2015, but no change to business plan
forecast.

COMMISSION AGENDA 
Tay Yoshitani, Chief Executive Officer 
June 23, 2014 
Page 6 of 7 
Lifecycle Cost and Savings 
The Feeder 101 Taps Replacement Project replaces existing electrical infrastructure. Operational
costs will remain the same and are factored into existing Aviation Maintenance budgets. 
The Fire Station Electrical Upgrade Project replaces existing electrical infrastructure with a
higher capacity.  The potential for higher electrical use is included to meet long-term Fire
Department needs. Maintenance trouble calls will decrease. Estimated Operating costs for the
additional infrastructure upgrades are estimated to be $36,500 per year. 
STRATEGIES AND OBJECTIVES 
The Feeder 101 Taps Replacement Project will support our Century Agenda Strategic Objective
to triple air cargo volume by ensuring that the infrastructure is reliable and up to date. 
The Fire Station Electrical Upgrade Project will support the Century Agenda objective of
meeting the region's air transportation needs at Sea-Tac Airport for the next 25 years. In order to
support existing operations, and further growth, the Airport must maintain critical assets such as
the Fire Station.
TRIPLE BOTTOM LINE 
Economic Development 
The combined projects will support the economy by providing our customers with a reliable
power system and continuing to provide service to the community with the facilities located
along Air Cargo Road. 
Environmental Responsibility 
The combined projects will support the environment by recycling the majority of the materials to
be removed and by installing new more efficient electrical equipment. 
Community Benefits 
The projects will also support the Ports commitment to support social responsibility through by
continuing to provide small business opportunities and job creation. 
ALTERNATIVES AND IMPLICATIONS CONSIDERED 
Alternative 1)  Leave the equipment in place. The equipment would be replaced as it fails.
This alternative represents the biggest risk to the Port due to potential loss of operations and
impact to cargo airlines, as well as the potential to shut down Fire Station operations. This is not
the recommended alternative. 
Alternative 2)  Replace the feeders, the unit substation, and add protective bollards associated
with the Feeder 101 Taps Replacement project and the feeder, the unit substation, and add
standby power associated with the Fire Station Electrical Upgrade project on separate contracts.

COMMISSION AGENDA 
Tay Yoshitani, Chief Executive Officer 
June 23, 2014 
Page 7 of 7 
This can be accomplished; however, this will increase the costs to the Port and to the contractor.
This will also lengthen the schedule, which increases the risk to the Port. This is not the
recommended alternative. 
Alternative 3)  Replace the feeders, the unit substation, and add protective bollards associated
with the Feeder 101 Taps Replacement project and the feeder, the unit substation, and add
standby power associated with the Fire Station Electrical Upgrade project under a single contract
with one CIP. This is the recommended alternative. 
ATTACHMENTS TO THIS REQUEST 
Overall Site Plan 
Comparison of Scope 
PREVIOUS COMMISSION ACTIONS OR BRIEFINGS 
May 14, 2013  Authorized Design for the Fire Station Electrical Upgrade Project. 
January 22, 2013  Authorized Design for the Feeder 101 Taps Replacement Project.