PORT OF SEATTLE 
MEMORANDUM 
COMMISSION AGENDA               Item No.       5b 
ACTION ITEM             Date of Meeting    June 4, 2013 

DATE:    May 28, 2013 
TO:      Tay Yoshitani, Chief Executive Officer 
FROM:   John Christianson, General Manager, Aviation Maintenance 
Wayne Grotheer, Director, Aviation Project Management Group 
SUBJECT:  Port owned Loading Bridge Renewal and Replacement (C800267)  Gate S12 

Amount of This Request:  $0           Source of Funds: Airport Development Fund 
Est. State and Local Taxes: $128,000       Est. Jobs Created: 16 
Est. Total Project Cost:    $2,405,000 
ACTION REQUESTED: 
Request Commission authorization for the Chief Executive Officer to execute a construction
contract with Airport Mechanical Services in the amount of $579,260.22 to refurbish the existing
Passenger Loading Bridge (PLB) and associated fixed walkway section at Gate S12. Airport
Mechanical Services was the only bidder for this contract, and Resolution No. 3605, as amended 
by Resolution No. 3628, requires the Commission to approve contracts as a bid irregularity when
there is only one bidder. No additional funding is being req uested. 
SYNOPSIS: 
The Commission authorized the execution of this contract on March 5, 2013, but, when
contractor bids were due on May 16, 2013, only one proposal in the amount of $579,260.22 was
received from Airport Mechanical Services. This single bid represents an irregularity requiring
further Commission action in accordance with Section 4.2.3.4 of Resolution No. 3605, as
amended by Resolution No. 3628. This bid amount is also $7,010.22 more than the engineer's
cost estimate of $572,250, or 1% higher. After review, Port staff believes the engineer's
estimate is sound and the bid price is fair and reasonable. 
BACKGROUND: 
On February 28, 2012, and again on June 5, 2012, the Commission authorized design and 
purchase and the following: 
installation of one new PLB and associated fixed walkway at Gate S3; 
refurbishment of the existing PLB and fixed walkway at Gate S12; and 
refurbishment of the existing PLB at Gate S4.

COMMISSION AGENDA 
Tay Yoshitani, Chief Executive Officer 
May 28, 2013 
Page 2 of 5 
The scope of work for Gate S3 was completed in February 2013, while the Gate S4
refurbishment is expected to be completed in 2014.
On May 2, 2013, the Gate S12 scope of work was advertised for bid. Representatives from
Airport Mechanical Services, Pease Construction and Thyssen-Krupp attended the pre-bid
meeting and site walk on May 6, 2013.
In order to mitigate the amount of time that Gate S12 will be taken out of service, the S12 PLB
and fixed walkway refurbishment scope of work has been timed to coincide with the Capital
Improvement Project C104825, Airfield Apron Replacement project, which will be replacing
ramp and taxiway panels also in the Gate S12 area. 
After review, staff is confident that the engineer's estimate is sound and the bid price is fair and
reasonable. Staff is not recommending that this scope of work be rebid. Staff also believes the 
timing of the bidding period, which occurred during the height of airline realignment activity at
the Airport, coupled with the schedule of the construction start on or about July 15, 2013, were
the primary factors that limited the number of bids received.
PROJECT JUSTIFICATION: 
This project will allow the Airport to replace or refurbish its PLBs that have reached the end of
their service life or that are at high risk for failure. Key justifications include: 
Operational failure of a PLB causes a serious ripple effect, negatively affecting
operations and airline service while significantly inconveniencing the traveling public.
The refurbishment of Airport-owned PLBs becomes a more attractive option than
outright replacement since approximately two PLBs can be refurbished for the price of
one PLB replacement while significantly extending their useful life. This allows the
Airport to more cost effectively provide upgraded equipment at more gates.
New or refurbished PLBs typically experience longer lifespans resulting in deferred
future capital expenditures. Refurbished PLBs have an estimated service life extension
of approximately 20 years. 
Refurbishing PLBs as opposed to replacing them keeps approximately 20 tons of
demolition debris per refurbished PLB out of the waste stream.
Project Objectives: 
The refurbishment and/or replacement of Port-owned PLBs that have reached the end of
their service life will result in decreased maintenance costs and PLB downtime and will
greatly reduce the likelihood of total PLB failure.
Malfunctioning PLBs must repaired or replaced, both at considerable cost to the Port and
significant impact to airline operations.
When a PLB is out of service, it results in reduced ability to accommodate flights at the
South Satellite, and negatively impacts major airline tenants by reducing access to
international, wide-body-capable gates.

COMMISSION AGENDA 
Tay Yoshitani, Chief Executive Officer 
May 28, 2013 
Page 3 of 5 
PROJECT SCOPE OF WORK AND SCHEDULE: 
Scope of Work: 
The anticipated scope of work at Gate S12 includes: 
Refurbishment work to renew/replace primary PLB and fixed walkway systems,
equipment, components and finishes in order to extend their useful life. 
The design for this scope of work has already been procured and the design was
completed and reviewed prior to this work being released for bid.
Schedule: 
Start            Finish 
S12 PLB and Fixed Walkway Construction      July 2013        August 2013 
FINANCIAL IMPLICATIONS: 
Budget/Authorization Summary:               Capital   Expense      Total
Project 
Original Budget                         $2,405,000       $0   $2,405,000 
Previous Authorizations                    $2,405,000       $0   $2,405,000 
Current request for authorization                     $0       $0         $0 
Total Authorizations, including this request        $2,405,000       $0   $2,405,000 
Remaining budget to be authorized                 $0       $0        $0 
Total Estimated Project Cost                $2,405,000       $0   $2,405,000 
Project Cost Breakdown:                   This Request       Total Project 
Construction                                   $0          $938,000 
Port Furnished Equipment                         $0         $405,000 
Sales Tax                                     $0         $128,000 
Outside Professional Services                         $0         $175,000 
Aviation PMG and Other Soft Costs                   $0         $708,000 
Environmental/HAZMAT/RMM                 $0        $51,000 
Total                                          $0         $2,405,000 
Budget Status and Source of Funds: 
This project was included in the 2013-17 capital budget and plan of finance within CIP
#C800267. Due to the PLB replacements planned in connection with the airline realignment in
the terminal, the scope of this CIP was reduced. The funding source will be the Airport
Development Fund.

COMMISSION AGENDA 
Tay Yoshitani, Chief Executive Officer 
May 28, 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        $2,405,000 
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 $.01 in 2014, but no change to
business plan forecast as this project was included. 
Lifecycle Cost and Savings: 
Annual operating and maintenance costs have been calculated by Aviation Maintenance at
approximately $12,600 per PLB per year plus an estimated 3% inflation thereafter.
ALTERNATIVES CONSIDERED AND THEIR IMPLICATIONS: 
Alternative #1: Rebid the S12 Scope of Work. 
Delaying the refurbishment of the S12 PLB and fixed walkway to rebid this scope of work in the
hope of attracting additional bids will have a significantly negative impact on the ability of the
Port to provide international, wide-body-capable gate facilities at the South Satellite. As
mentioned above, the S12 PLB and fixed walkway refurbishment scope of work has been timed
to coincide with the Capital Improvement Project C104825, Airfield Apron Replacement project, 
which will be replacing ramp and taxiway panels in the Gate S12 area during which time it will
need to be closed. Not keeping to the current construction schedule will mean that Gate S12 will
need to be removed from service for an additional 8-10 weeks at some future date which is
highly undesirable from an operations standpoint. This is not the preferred alternative.
Alternative #2: Accept the One Bid from Airport Mechanical Services. 
The bid from Airport Mechanical Services in the amount of $579,260.22 is $7,010.22 more than
the engineer's cost estimate of $572,250, or less than 1% higher. Accepting this responsive bid
will allow this scope of work to proceed as scheduled to coincide with the Capital Improvement
Project C104825, Airfield Apron Replacement project, which will be replacing ramp and
taxiway panels also in the Gate S12 area. Doing so will minimize the amount of time that Gate
S12 will remain out of service. This is the preferred alternative.
OTHER DOCUMENTS ASSOCIATED WITH THIS REQUEST: 
None

COMMISSION AGENDA 
Tay Yoshitani, Chief Executive Officer 
May 28, 2013 
Page 5 of 5 
PREVIOUS COMMISSION ACTIONS OR BRIEFINGS: 
On February 28, 2012, the Port Commission authorized the expenditure of $2,405,000 to
design purchase and install one passenger loading bridge and associated equipment at
Gate N3 and to design and refurbish passenger loading bridges at Gates S3, S4 and S12. 
On June 5, 2012, the Port Commission authorized a change to change the scope of this
project as follows: (1) remove the replacement of the passenger loading bridge (PLB) at
Gate N3 as originally authorized; (2) proceed with design, purchase and installation of
one new PLB and associated fixed walkway section at Gate S3; and (3) add the
refurbishment of the fixed walkway section at Gate S12 at Seattle-Tacoma International
Airport. 
On March 5, 2013, the Port Commission authorized advertising and executing a major
works contract for the refurbishment of the passenger loading bridge (PLB) and
associated fixed walkway at Gate S12 at the Seattle-Tacoma International Airport. This
scope of work was originally intended to be handled via small works contracting but the
change was requested as the estimated project cost exceeded the small works threshold