PORT OF SEATTLE 
MEMORANDUM 
COMMISSION AGENDA               Item No.       5d 
ACTION ITEM             Date of Meeting    April 2, 2013 

DATE:    March 26, 2013 
TO:      Tay Yoshitani, Chief Executive Officer 
FROM:   Michael Ehl, Director, Airport Operations 
Wayne Grotheer, Director, Aviation Project Management Group 
SUBJECT:  2014 Airfield Apron Pavement Replacement Design (CIP #C102573) 
Amount of This Request:  $300,000        Source of Funds: Existing 2010 Revenue 
Bonds 
Est. State and Local Taxes: TBD           Est. Jobs Created: TBD 
Est. Total Project Cost:    $6,500,000 
ACTION REQUESTED: 
Request Commission authorization for the Chief Executive Officer to design, prepare
construction documents, and perform advanced preparatory work to replace distressed concrete
pavement panels and joint sealant for the 2014 Airfield Apron Pavement Replacement project at
Seattle-Tacoma International Airport in the amount of $300,000. The total estimated project cost
in 2014 is $6,500,000. 
SYNOPSIS: 
This project is part of an ongoing pavement management program to replace aged and distressed
pavement and joint sealant in non-runway areas. Many sections of pavement have exceeded
their 20-year service life and have become cracked and damaged. Sealing joints between panels
helps to prevent water intrusion to the subgrade and extends the life of the pavement. The
pavement management program is necessary for safe and continued aircraft operations to occur.
This project was included in the 2013  2017 capital budget and plan of finance. One area where
work will be concentrated is the Cargo 6 hardstand area, which has a high percentage of
distressed panels. Although currently not anticipated, additional funds may be requested if
design and implementation reveal that additional pavement or mitigation for aircraft operations
will be required during construction.
BACKGROUND: 
The 2014 Airfield Apron Pavement Replacement project proposes to replace distressed concrete
pavement panels and joint sealant in a programmatic approach as part of a multi-year program. 
This approach would involve the replacement of distressed panels and additional panels in the
direct vicinity of the distressed panels. Concrete pavement panels have a service life of 20 years.
Joint sealant typically has a service life of 10 years. A significant amount of existing airfield
apron pavement and joint sealant has far exceeded its expected service life. This strategy of

COMMISSION AGENDA 
Tay Yoshitani, Chief Executive Officer 
March 26, 2013 
Page 2 of 5 
replacing larger groups of panels will allow aged panels to be systematically and more efficiently
replaced than if only individual panels were replaced. Over time, this approach should be less
disruptive to airline operations since the areas will not need to be closed again for construction
for many years. The replacement of the joint sealant helps to extend the life of pavements. 
Port staff has specifically identified a location with a high percentage of distressed panels, the
Cargo 6 hardstand area north of the Fire Station (See Attachment A). The Cargo 6 area has one
of the highest concentrations of distressed panels at the Airport. This work will be included in a
contract to enhance Cargo 6 for improved cargo operations. The cost for this portion of the
apron panel replacement is estimated to be in the $4 million range. 
This project will also identify other sections of distressed airfield pavement and joint sealant for
replacement. These sections can occur anywhere on the airfield, not including runways. Runway
pavement replacement is conducted under a different program. These sections of panels and joint
sealant will be replaced under a separate contract from the Cargo 6 panels. The construction
costs for this project have yet to be determined but a projected estimate is in the $2.5 million 
range. 
The current request accounts for the design and implementation of a minimal amount of
temporary measures required to mitigate airline impact due to anticipated gate and cargo aircraft
parking closures. Closure of gates and cargo aircraft parking areas, required by the construction
of the project, may cause reassignment of domestic and international flights on multiple
concourses. Port staff will return to the Commission to request additional funding in the event
that extensive temporary modifications for reassigning gates and parking areas are required that
exceed the authorized funds. The estimated total cost for apron panel replacement and joint seal
in 2014 is yet to be determined but is projected to be in the $6.5 million range. 
The original budget for the program is $30,800,000. T he remaining funds for the last two funded
years of the program, is approximately $10.1 million with approximately $6.5 million to be used
for the pavement project in 2014 and $3.6 million for the pavement project in 2015. Previous
cost saving accounts for the difference between the approximately $10.1 million of funds
remaining and the $8,617,000 of remaining budget to be authorized. 
PROJECT JUSTIFICATION: 
Aging existing concrete across the Airport Operations Area (AOA) has resulted in cracked and
damaged panels. Concrete debris resulting from deteriorating pavement can become a hazard for
aircraft and personnel. The replacement of joint sealant helps to extend the life of the pavement. 
This project will likely impact air cargo operations at hardstands across the Airport and impact
taxiway configurations. If additional distressed concrete panels are discovered in gate areas prior
to construction, advanced preparations such as temporary podiums at the gates within the interior
of the terminal may be necessary to facilitate airline tenant relocation. The need for temporary
modifications requires discussion and coordination with the airlines during the design phase and
is dependent upon the anticipated impact during construction.

COMMISSION AGENDA 
Tay Yoshitani, Chief Executive Officer 
March 26, 2013 
Page 3 of 5 
Project Objectives: 
Replace aged pavement and joint sealant as part of the pavement management program
that allows aircraft operations to safely occur. 
Complete the final design for the pavement, and joint seal replacement in preparation
for construction in summer of 2014. 
PROJECT SCOPE OF WORK AND SCHEDULE: 
Scope of Work: 
Produce final design for the apron pavement, and joint seal replacement. The design will include
utilities, temporary striping and lighting and other scope items related to the project. 
Schedule: General 2014 Panel and Joint Seal Replacement 
Begin Design               April 2013 
Final Design                March 2014 
Commission Authorize Advertise   March 2014 
Advertise                   March 2014 
Construction                May to     October 2014 
Schedule: Cargo 6 Panel Replacement 
Begin Design               April 2013 
Final Design                July 2013 
Commission Authorize Advertise   August 2013 
Advertise                   September 2013 
Construction                January  October 2014 
FINANCIAL IMPLICATIONS: 
Budget/Authorization Summary: 
Original Budget                          $30,800,000 
Budget Decrease (2012)                     $(537,965) 
Previous Authorizations                     $21,345,035 
Current request for authorization                   $300,000 
Total Authorizations, including this request         $21,645,035 
Remaining budget to be authorized              $8,617,000 
Project Cost Breakdown: 
Design                                 $150,000 
Project Management                        $90,000 
Survey                                 $40,000 
Internal POS Support and Review                 $20,000
Total                                     $300,000

COMMISSION AGENDA 
Tay Yoshitani, Chief Executive Officer 
March 26, 2013 
Page 4 of 5 
Budget Status and Source of Funds: 
The airfield panel and joint seal replacement is included in the 2013-2017 capital budget and
plan of finance. The airfield panel and joint seal replacement project, CIP #C102573, is part of a
multi-year program to replace deteriorating pavement panels and joint seal. The funding source
will be existing revenue bond proceeds and future bonds. 
Financial Analysis and Summary: 
CIP Category             New/Enhancement 
Project Type              Renewal & replacement 
Risk adjusted discount rate     N/A 
Key risk factors             N/A 
Project cost for analysis        $6,500,000 
Business Unit (BU)          Airfield 
Effect on business performance  NOI after depreciation will occur 
IRR/NPV             N/A 
CPE Impact             By 2014, the combined effect of these projects will
increase CPE by less than $0.03.
Lifecycle Cost and Savings: 
Annual Operating and Maintenance costs are not anticipated to change appreciably. The
replacement of concrete panels and joint seal will result in cost avoidance for maintaining them. 
STRATEGIC OBJECTIVES: 
Maintaining critical airfield assets supports the Port's Century Agenda objective to meet the
region's air transportation needs at Sea-Tac for the next 25 years. Top-notch air cargo facilities
are fundamental to becoming a premier international logistics hub. 
ENVIRONMENTAL SUSTAINABILITY: 
During repair and maintenance activities, various sustainable practices will be considered and
implemented when practicable. These include, but are not limited to, performing a lifecycle
analysis of materials used to ensure that resources being used and/or recycled are
environmentally and economically practical; utilizing onsite water for dust control and irrigation;
the reuse of materials such as concrete and soil; and employing low emission construction
equipment. 
BUSINESS PLAN OBJECTIVES: 
This project furthers the Airport's business plan objectives to operate a world-class international
airport by ensuring safe and secure operations and by managing our assets to minimize the total
long-term cost of ownership.

COMMISSION AGENDA 
Tay Yoshitani, Chief Executive Officer 
March 26, 2013 
Page 5 of 5 
ALTERNATIVES CONSIDERED AND THEIR IMPLICATIONS: 
1) Do nothing: This alternative would result in an increasing risk of aircraft ingesting concrete
debris into aircraft engines from distressed pavement, adversely affecting Airport operations.
This is not the recommended alternative. 
2) Replace the pavement and joint seal at Cargo 6 and at other non-runway areas during the 2014
construction season. This allows for the programmatic replacement of aged and distressed
pavement and joint sealant. This is the recommended alternative. 
OTHER DOCUMENTS ASSOCIATED WITH THIS REQUEST: 
None. 
PREVIOUS COMMISSION ACTIONS OR BRIEFINGS: 
C102573  Airfield Pavement Replacement 
On April 10, 2012, the Commission authorized an additional $1,467,000 because the bids
exceeded the engineer's estimate by greater than 10 percent; and authorized the Chief
Executive Officer to execute a contract in the amount of $6,553,964 with the low
responsive and responsible bidder for the 2012 Exterior Gates and Airfield Improvement
Projects. This authorization increased the budget by $1,467,000 due to the higher than
expected bids, for a total project cost of $10,500,000. 
On January 24, 2012, the Commission authorized $4,707,000 and for the Chief Executive
Officer to advertise and execute a construction contract that included Apron Pavement
Replacement, Exterior Gate Improvements, Runway 16C/34C Panel Replacement, and
South Snow Dump Pavement Expansion. 
On July 26, 2011, the Commission authorized $465,000 and for the Chief Executive
Officer to complete the design and perform any advance work in support of the 2012
Pavement and Joint Replacement and Sealant Project for non-runway concrete pavement
panels, joint seal replacement, spall repair, and associated or temporary facilities, such as
striping, lighting, etc., on the Aircraft Operations Area. 
On March 1, 2011, the Commission authorized $6,235,000 and for the Chief Executive
Officer to advertise and execute a construction contract that included slot drain,
pavement, and joint seal replacement at the South Satellite and perform installation of
temporary facilities in concourses. 
On August 10, 2010, the Commission authorized $394,000 and for the Chief Executive
Officer to direct staff to: 1) proceed with project management, design, environmental
support, and preparation of 100 percent design level construction documents for the
replacement of slot drains, pavement and joint seal at the South Satellite at Seattle-
Tacoma International Airport; 2) execute and award outside professional service
agreements; 3) pre-purchase common-use gate equipment; and 4) allow Port Construction
Services to self-perform, advertise for bids, and execute and award small works
construction contracts for common use equipment installation.