PORT OF SEATTLE 
MEMORANDUM 
COMMISSION AGENDA               Item No.      6d 
ACTION ITEM 
Date of Meeting      April 1, 2014 
DATE:    March 21, 2014 
TO:      Tay Yoshitani, Chief Executive Officer 
FROM:   Mike Ehl, Director, Airport Operations 
Wayne Grotheer, Director, Aviation Project Management Group 
SUBJECT:  Long-Term Cell Phone Lot (CIP #C800324) 
Amount of This Request:         $693,000   Source of Funds:  Airport Development
Fund 
Est. Total Project Cost:          $2,521,000 
Est. State and Local Taxes:         $99,000 
ACTION REQUESTED 
Request Commission authorization for the Chief Executive Officer to complete the design and
construction of the Long-Term Cell Phone Lot project at the Seattle-Tacoma International
Airport (Airport) for an additional authorization of $693,000, for a total authorization of
$2,521,000. 
SYNOPSIS 
The Airport's existing cell phone waiting lot will be displaced by construction of new aircraft
parking hardstand facilities this April. Therefore, a new cell phone lot will be constructed at a
location on the south side of S. 170th St. The location of the new cell phone lot requires a
roundabout to be constructed to facilitate ingress and egress from the lot and to mitigate traffic
impacts along S. 170th St., the majority of which is City of SeaTac right-of-way. 
Design of the cell phone lot and roundabout was authorized by the Commission in December
2012, and construction of the cell phone lot was authorized in September 2013. Construction of
the cell phone lot and design of the roundabout is in progress.  The remaining $693,000
unauthorized amount of the $2,521,000 budget is requested to be authorized to complete the cell
phone lot construction and roundabout design. The cell phone lot construction costs are higher
than anticipated primarily due to removal and disposal of unsuitable soils and corresponding
import of suitable material, and higher than anticipated costs for pavement and lot lighting. A
portion of the requested authorization is needed for additional design costs for the roundabout.
Upon completion of the roundabout design and preparation of a construction cost estimate, staff
will return to Commission for a budget revision and construction authorization. 


Template revised May 30, 2013.

COMMISSION AGENDA 
Tay Yoshitani, Chief Executive Officer 
March 21, 2014 
Page 2 of 6 
BACKGROUND 
Over the past decade, two significant developments led airports to develop cell phone waiting
lots: the September 11th events and the ubiquity of cellular phones. Following September 11th,
a shift in air traveler behavior occurred throughout the United States. Primarily due to new
checkpoint restrictions, passengers and their parties were no longer able or inclined to meet in
the terminal and utilize short-term parking. With the aid of cellular phones, friends and families
can contact their arriving parties as they debark the aircraft and time their trip accordingly. The
result is an increased demand for curbside parking and curbside congestion, or at the very least, a
location to wait for their arriving party and a decrease in meeting passengers in the terminal.
Without a cell phone lot, meeters and greeters either utilize curbside parking spaces or innovate
on the fly, often parking on local streets or the shoulders of the Northern Airport Expressway
creating an unsafe condition. 
Separately, there exists a shortage of hardstand space for parking passenger and cargo aircraft
that remain overnight at the Airport.  To increase remain-overnight (RON) space, the previous
site of the United States Postal Service Air Mail Center (AMC) is being reconstructed for 
hardstands as part of the Cargo Hardstand Improvements project.  Currently the Airport's cell
phone waiting lot uses a portion of the parking lot in front of and adjacent to the AMC site and 
will be displaced by the construction of the handstand improvements in early April. 
The new replacement cell phone waiting lot is located immediately south of S. 170th St. at the
site of the former Radisson Hotel. The project includes the construction of the new lot and a
roundabout on S. 170 St. to facilitate ingress and egress from the lot, and to mitigate traffic
impacts along S. 170th St. The construction of the new lot is currently underway and includes the
demolition of the existing asphalt pavement; the re-grading, paving, and striping the new lot; the
installation of a new lighting system; and revisions to the existing stormwater system.  A
temporary traffic signal will also be installed on S. 170th St. to suport traffic operations until the
new roundabout is completed. 
During the construction of the new cell phone waiting lot several issues have occurred that have
resulted in higher than anticipated construction costs. During the grading activity, unsuitable
soils were discovered which needed to be removed and then replaced with suitable materials.
The costs for both the pavement and new lot lighting system are also higher than anticipated.
Additional design costs are also needed to address conflicts with the roundabout grades and
existing utilities and infrastructure. These issues have led to the current request to authorize the
remaining project budget to support the completion of the construction of the new cell phone
waiting lot, and the design of the roundabout. Upon completion of the roundabout design, and
preparation of a construction cost estimate, staff will return to Commission for a budget revision
and construction authorization.

COMMISSION AGENDA 
Tay Yoshitani, Chief Executive Officer 
March 21, 2014 
Page 3 of 6 
PROJECT JUSTIFICATION AND DETAILS 
The total proposed project, including the cell phone lot and roundabout, is justified based on the
following reasons: 
A cell phone waiting lot is an expected Airport-provided service to travelers. 
Without a cell phone waiting lot, some pick-up vehicles will wait for extended periods at
the terminal curbside or along roadway shoulders resulting in congestion and safety
problems. 
The existing cell phone waiting lot will be eliminated by construction of new facilities. 
A cost effective site is available on the south side of S. 170th St. for a new cell phone lot. 
The traffic control roundabout will mitigate increased traffic along S. 170th St. caused by
the new cell phone lot. 
Project Objectives 
The cell phone lot and traffic roundabout will contribute to achievement of the Airport's business
plan strategy to become one of the top five customer service airports as ranked among North
American peers by 2018. 
Scope of Work 
The new lot will be located at the site of the former Radisson Hotel parking lot. T he entrance for
the new lot will be located on the south side of S. 170th St. and vehicle ingress/egress will be
facilitated by a roundabout. The lot will have the capacity of up to 200 vehicles.
Project work will include: 
Demolition of existing asphalt pavement. 
Site grading, paving, and striping. 
Installation of lot lighting. 
Installation of a stormwater system for the lot. 
Landscaping. 
Wireless antennas to support access to Port of Seattle wi-fi services. 
Traffic roundabout. 
Schedule 
Cell phone lot design completion:       September 2013 
Cell phone lot construction completion:    April 2014 
Roundabout design completion:        June 2014 
Roundabout construction completion:     April 2015

COMMISSION AGENDA 
Tay Yoshitani, Chief Executive Officer 
March 21, 2014 
Page 4 of 6 
FINANCIAL IMPLICATIONS 
Budget/Authorization Summary              Capital     Expense   Total Project 
Original Budget                      $2,521,000          $0    $2,521,000 
Previous Authorizations                 $1,828,000          $0    $1,828,000 
Current request for authorization              $693,000          $0      $693,000 
Total Authorizations, including this request     $2,521,000          $0    $2,521,000 
Remaining budget to be authorized               $0          $0          $0 
Total Estimated Project Cost              $2,521,000          $0    $2,521,000 
Project Cost Breakdown                     This Request       Total Project 
Construction of Cell Phone Lot (excludes             $600,000         $1,783,000 
roundabout) 
Construction Management                         $0         $135,000 
Design                                    $93,000          $217,000 
Project Management                             $0         $126,000 
Other Soft Costs                                  $0          $161,000 
State & Local Taxes (estimated)                        $0           $99,000 
Total                                       $693,000         $2,521,000 
Budget Status and Source of Funds 
This project was included in the 2014-2018 capital budget and plan of finance with a budget of
$2,521,000. The funding sources will include up to $1,000,000 from the City of SeaTac from
parking tax funds. These funds will cover cost of the roundabout only. The remaining costs will
be funded with the Airport Development Fund. It is anticipated that staff will return to
Commission later this year to request additional budget of between $1 and 2 million dollars. The
actual amount will be confirmed by the design portion of today's authorization request. 
Financial Analysis and Summary 
CIP Category             Renewal / Enhancement 
Project Type              Infrastructure Upgrades 
Risk adjusted discount rate     N/A 
Key risk factors             Delays during the design, permitting, or construction
phase could cause the project completion date to extend
beyond the closing date of the existing cell phone lot, thus
there could be a period when no cell phone lot facility is
available to customers. Final scope of the roundabout will
affect design and construction costs. 
Project cost for analysis        $1,521,000 (excludes $1 million from City of SeaTac) 
Business Unit (BU)          Roadway (cost split between aeronautical and nonaeronautical
business units)

COMMISSION AGENDA 
Tay Yoshitani, Chief Executive Officer 
March 21, 2014 
Page 5 of 6 
Effect on business performance  No revenue is generated by the existing cell phone lot and
no revenue will be generated directly by the proposed lot.
Approximately half of the costs of roadway projects are
charged to the airline rate base. 
IRR/NPV             N/A 
CPE Impact             Less than $.01 increase. 
Lifecycle Cost and Savings 
The project's lifecycle cost includes the initial capital cost plus future on-going operation and
maintenance costs estimated to be $24,000 per year (in year 2012 dollars). 
STRATEGIES AND OBJECTIVES 
This project aligns with the Port's Century Agenda objective of meeting the region's air
transportation needs at the Airport for the next 25 years.
This project also supports the Airport's strategy of becoming one of the top customer service
airports in the world. 
TRIPLE BOTTOM LINE 
Economic Development 
The project supports economic development by investing in a new long-term cell phone parking
lot to serve the public's transportation needs at the Airport.  Environmental sustainability
principles will be employed where practicable and consistent with Port policy. Also, procedures
set forth in the Port's Small Contractors and Suppliers Program will be used when applicable in
the project contracting process in coordination with the Office of Social Responsibility. 
Environmental Responsibility 
This project will decrease emissions from vehicles accessing the Airport by providing a place for
vehicles to park and wait rather than circulating on the Airport drives. It will also provide the
opportunity to apply sustainability principles, including: 
Low impact development storm water management. 
Present an opportunity to provide a sign that educates cell lot users on the infiltration
bioswales and rain gardens being used. 
Posting of "No Idling" signs for air quality. 
Asphalt recycling. 
Energy efficient site lighting. 
Community Benefits 
The cell phone lot along with the traffic roundabout will provide an overall improvement to the
S. 170th St. corridor for airline passenger vehicles and other vehicles moving through the area.

COMMISSION AGENDA 
Tay Yoshitani, Chief Executive Officer 
March 21, 2014 
Page 6 of 6 
ALTERNATIVES AND IMPLICATIONS CONSIDERED 
Alternative 1)  Do not authorize construction of the cell phone lot. The existing cell phone lot
is expected to be out of service in April 2014. Therefore, after that date there would be no cell
phone lot available. As a result, it is anticipated that vehicles waiting to pick up passengers
would use the Northern Airport Expressway or other areas for temporary parking. This would
cause congestion, create unsafe conditions, and be illegal in some cases. This is not the
recommended alternative. 
Alternative 2)  Construct the cell phone lot and roundabout together under single major public
works contract. This would likely result in there being a period of uncertain duration when there
is no cell phone lot available to customers after the existing cell phone lot is out of service in
April 2014. Similar to Alternative 1, it is anticipated that vehicles waiting to pick up passengers
would use the Northern Airport Expressway or other areas for temporary parking. This is not the
recommended alternative. 
Alternative 3)  Authorize construction of the cell phone lot utilizing a combination of port
crews and contracts, construction of the temporary traffic signal, and authorize the Chief
Executive Officer to execute an interlocal agreement with the City of SeaTac for construction
and operation of the temporary signal. This will result in a new cell phone lot becoming available
at approximately the time the existing lot goes out of service, thus increasing the probability that
continuous service will be maintained. This is the recommended alternative. 
ATTACHMENTS TO THIS REQUEST 
None 
PREVIOUS COMMISSION ACTIONS OR BRIEFINGS 
December 11, 2012  Authorization for design of the cell phone lot and traffic
roundabout in the amount of $408,000. 
September 10, 2013  Authorization for construction of the cell phone lot in the amount
of $1,420,000.