COMMISSION 
AGENDA MEMORANDUM                Item No.       4e 
ACTION ITEM                   Date of Meeting   September 26, 2017 
DATE:    September 21, 2017 
TO:     Dave Soike, Interim Executive Director 
FROM:   Michael Ehl, Director Aviation Operations 
Wayne Grotheer, Director Aviation Project Management 
SUBJECT:  S. 160th Street Ground Transportation Lot Building Improvements (CIP #C101107) 
Amount of this request:          $2,231,533 
Total estimated project cost:       $4,326,533 
ACTION REQUESTED 
Request revision of the amended authorization of agenda item 6c of September 12, 2017,
related to the South 160th Street Ground Transportation Lot, to read as follows: Request
Commission authorization for the Executive Director to (1) increase the project authorization by
$2,231,533 $2,500,000 for the S. 160th St. Ground Transportation Lot Improvements project at
Seattle-Tacoma International Airport; (2) complete the design, advertise for bids, award and
execute a major works construction contract; (3) authorize the use of Port Construction
Services and small works contracts to rehabilitate the existing transportation building at the S.
160th St. lot; and (4) plan for potential construction of a new smaller facility for on-demand
operators; for a total project authorization of $4,326,533. 
EXECUTIVE SUMMARY 
On September 12, 2017, the Commission approved an amended authorization of $300,000 for
planning potential improvements on the lower portion of the lot specifically to serve 
transportation-network-company, or rideshare, drivers at the airport ground transportation lot
on South 160th Street of the $2,500,000 requested for design and construction of these
potential improvements. The amended authorization increases the total project authorization
to $4,326,533. Alternative 2, described below, has been adjusted to reflect the amended scope
of work, and the amounts in the financial analysis have been updated accordingly. The
Commission requested staff return for additional authorization for design and construction 
once these improvements have been determined. 
This project will completely rehabilitate the interior of the existing taxi driver layover building
including replacing the heating, ventilation and air conditioning (HVAC) system and roof and
potentially construct a new smaller facility in the lower lot for on demand operators located at

Template revised September 22, 2016.

COMMISSION AGENDA  Action Item No. _4e___                    Page 2 of 6 
Meeting Date: September 26, 2017 
the S. 160th St. Ground Transportation (GT) Lot. These efforts will extend the useful life of this
heavily used Port asset. 
JUSTIFICATION 
The GT Lot building, constructed in 1990, serves approximately 1,000 people per day within a
20 hour period, seven days a week, and has for many years. The interior, especially the
restrooms, are heavily worn and well beyond their useful service life. The interior has become
unserviceable, difficult to maintain and deteriorated. Replacement of the exiting HVAC system
and roof is required as they are past their useful lives and no longer meet code or energy
standards. 
Staff is also requesting approval to conduct a planning study of a separate restroom building on
the lower portion of the S. 160th St. GT Lot. This improvement would specifically serve the 
transportation network company (TNC) drivers. The new facility would replace the existing
(outdoor) portable toilets and sinks these commercial drivers use. 
DETAILS 
The interior spaces, building systems and roof of the S. 160th St. GT Lot building were slated to
be rehabilitated in 2015 as part of an earlier project. At the 100% design level, a decision was
made to withdraw this work from the project scope and add it to the tenant's pending contract 
with the intent for the tenant(s) to accomplish the rehabilitation work. 
The interior of the building is very worn, with the restrooms being in particularly poor
condition. To date, the tenant has not carried out any building improvements in keeping with
their contract. The condition of the building interior continues to deteriorate. This request is to
update the current 100% design documents to meet current code and permitting requirements,
to create the construction documents, and to advertise for construction and award a contract
to construct the renovations. 
The estimated cost for rehabilitating the existing taxi building in 2015 was $1,870,000. This
previous estimate has been reviewed and increased to $2,500,000 to cover design revisions, 
scope changes, to be in compliance with current codes and standards, to address a very
competitive bidding environment, and to expedite the bidding and construction of the project. 
This increased estimate is part of the additional increase in authorization being requested. 
Staff is requesting an additional authorization of $300,000 conduct a feasibility study of locating
an additional restroom building for the commercial drivers on the lower portion of the S. 160th 
St. GT Lot. Creating a new restroom facility for the other commercial drivers would require the
creation of plans and specifications, obtaining permits; getting utilities (power, water, sanitary)
to the site; and the construction of a new (durable) building. This planning effort would analyze 
the demand for, and cost of, providing such a facility. 

Template revised September 22, 2016; format updates October 19, 2016.

COMMISSION AGENDA  Action Item No. _4e___                    Page 3 of 6 
Meeting Date: September 26, 2017 
Of the $2,095,000 currently authorized, $1,232,570 has been spent to date, which includes
$207,273 spent for the previous design costs expensed when the decision was made to delete 
the building scope from the project. Given the remaining unspent authorized funds, this brings
the total request for additional authorization to $2,231,533 and a revised total project
authorization of $4,326,533. The work accomplished to date includes all of the site
improvements: storm drainage, landscaping, sidewalk and utility undergrounding. 
Scope of Work 
This project will rehabilitate the interior of the S. 160th St. GT Lot building, and replace certain
mechanical systems and the building's roof based on the updated 2014 plans and
specifications. 
The scope includes: 
(1)   Providing temporary restroom facilities during construction 
(2)   Complete gutting of the men's restroom, including mold remediation if necessary 
(3)   Complete reconstruction of the men's room, to include foot washers and using less
maintenance intensive materials 
(4)   Reconfiguration and remodeling of the women's restroom 
(5)   Reconfiguration and remodeling of the dispatch office space 
(6)   Reconfiguration and rehabilitation of the day room space and kitchenette areas 
(7)   Correcting a number of ad hoc wiring and cabling solutions installed by various
tenants 
(8)   Roof replacement 
(9)   Complete HVAC system replacement to current code standards 
The TNC facility to be analyzed would include restrooms in a durable building of approximately
700 square feet. Finishes and fixtures would be identical to those used in the taxi building
restrooms for planning purposes.
Small Business 
The scope of work presents a number of opportunities for small and historically underutilize
businesses to participate. Project management staff has partnered with the Port's small
business group to help outreach and promote this project through past PortGen events.
Schedule 
Commission design authorization         2013 Quarter 4 
Design verification start                 2017 Quarter 3 
Commission construction authorization     2017 Quarter 3 
Construction start                    2018 Quarter 1 
In-use date                        2018 Quarter 2 

Template revised September 22, 2016; format updates October 19, 2016.

COMMISSION AGENDA  Action Item No. _4e___                    Page 4 of 6 
Meeting Date: September 26, 2017 
Cost Breakdown                         This Request       Total Project 
Design                                   $431,533         $1,326,533 
Construction                              $1,800,000         $3,000,000 
Total                                      $2,231,533          $4,326,533 
ALTERNATIVES AND IMPLICATIONS CONSIDERED 
Limited options exist to reach the desired outcome at the S. 160th St. GT Lot building. 
Alternative 1  Rehabilitate the taxi building interior as configured today. 
Cost Implications: $1,750,000 
Pros: 
(1)   Addresses the most pressing problems with the building, such as the men's restroom. 
(2)   Reduces cost 
Cons: 
(1)   Doesn't replace the HVAC system and roof, which at 27 years old, are well beyond
their useful life 
(2)   Leaves building in current configuration, which doesn't allocate space efficiently 
(3)   Does not address all the building's problems 
This is not the recommended alternative. 
Alternative 2    Reconfigure and completely rehabilitate existing taxi building interior
($2,500,000) and perform a planning study for a separate TNC facility ($300,000). 
Cost Implications:   $2,800,000  overall; an increase to the original 2015 construction
authorization of $2,231,533. 
Pros: 
(1)   Resolves the problems within the existing taxi building and provides much more
efficient use of its interior space 
(2)   Improves maintainability of the existing structure 
(3)   Considers the need for a separate restroom facility for the commercial operators on
the lower lot 
Cons: 
(1)   Future of TNC operations on this site is an unknown 
(2)   If SAMP reuses the site, the new structure might need to be written off. 
This is the recommended alternative. 



Template revised September 22, 2016; format updates October 19, 2016.

COMMISSION AGENDA  Action Item No. _4e___                    Page 5 of 6 
Meeting Date: September 26, 2017 
Alternative 3    Rehabilitate existing taxi building interior, include wiring and cabling
improvements, and replace HVAC and roof 
Cost Implications: $2,500,000 
Pros: 
(1)   Addresses all known shortcomings to the interior of the building 
(2)   Replaces HVAC with a system that addresses current code issues and energy efficiency
standards 
(3)   Roof replacement should last until the end of the building's service life 
Cons: 
(1)   Port assumes responsibility for improvements 
(2)   Cost of $2,500,000 
This is not the recommended alternative. 
FINANCIAL IMPLICATIONS 
Cost Estimate/Authorization Summary          Capital      Expense        Total 
COST ESTIMATE 
Original estimate                      $3,516,000          $0    $3,516,000 
Previous changes  net                 ($3,014,433)    $1,024,966   ($1,989,467) 
Current change                      $2,800,000          0    $2,800,000 
Revised estimate                     $3,301,567    $1,024,966    $4,326,533 
AUTHORIZATION 
Previous authorizations                  $1,070,034     1,024,966    $2,095,000 
Current request for authorization           $2,231,533          $0    $2,231,533 
Total authorizations, including this request     $3,301,567    $1,024,966    $4,326,533 
COST ESTIMATE                        $0         $0         $0 
Annual Budget Status and Source of Funds 
While this project was included in the 2017  2021 capital budget as an active capital project,
there were no forecasted cash flows as the scope and budget had been reduced consistent with
previous direction. The current budget request will be transferred from the non-aeronautical
allowance CIP (C800405) resulting in no net change to the total capital budget. The funding
source will be the Airport Development Fund. 
Financial Analysis and Summary 
Project cost for analysis         $4,326,533 
Business Unit (BU)            Landside  Ground Transportation 
Effect on business performance   NOI after depreciation will decrease 
(NOI after depreciation) 
IRR/NPV (if relevant)           N/A 

Template revised September 22, 2016; format updates October 19, 2016.

COMMISSION AGENDA  Action Item No. _4e___                    Page 6 of 6 
Meeting Date: September 26, 2017 
CPE Impact                None 
Future Revenues and Expenses (Total cost of ownership) 
Per our contract with the taxi provider, the ongoing costs of operating and maintaining this
facility will remain their responsibility. 
ATTACHMENTS TO THIS REQUEST 
Site plan aerial photo 
PREVIOUS COMMISSION ACTIONS OR BRIEFINGS 
September 12, 2017  The Commission authorized a "budget increase" of $2,500,000 to
accommodate increased project construction costs and initial planning for potential
construction of an additional facility for TNC operators for a total project cost estimated
at $4,326,533. 
September 22, 2015  The Commission authorized the Chief Executive Officer to advertise
for bids, award, and execute a major works construction contract to construct the
Airport's South 160th Street Ground Transportation Lot project site improvements, for
an estimated amount of $455,000 and a total authorization of $2,095,000. 
November 19, 2013  The Commission authorized (1) proceeding with design of the S.
160th St. Ground Transportation Lot Project for an estimated $667,000; (2) executing
utility agreements with Puget Sound Energy (PSE), Comcast, and CenturyLink to
underground utilities; (3) granting and transferring a utility easement to PSE on Port
property along the south side of S. 160th St. to underground utilities; (4) reimbursing
PSE, Comcast, and CenturyLink in an amount not to exceed $540,000 for the utility
undergrounding work; and (5) transferring of the utility undergrounding scope of work
and $973,000 of authorized budget from the Off-Site Roadway Improvements (ORI)
Project to the S. 160th St. Ground Transportation Lot Project. 






Template revised September 22, 2016; format updates October 19, 2016.