COMMISSION 
AGENDA MEMORANDUM                        Item No.          4d 
ACTION ITEM                            Date of Meeting    September 12, 2017 
DATE:     August 24, 2017 
TO:        Dave Soike, Interim Executive Director 
FROM:    Wayne Grotheer, Director, Aviation Project Management Group 
Michael Ehl, Director, Aviation Operations 
SUBJECT:  Restroom Upgrades at Concourses B, C, and D (CIP #C800697) 
Amount of this request:               $2,536,000 
Total estimated project cost:         $33,047,000 
ACTION REQUESTED 
Request Commission authorization for the Executive Director to advertise and execute a major
works construction contract for the Airline Crew Lounge and Service Facility as the first enabling
project for the Restroom Renovation project at Seattle-Tacoma International Airport. This
request is for $2,536,000 of a total estimated project cost of $33,047,000.
EXECUTIVE SUMMARY 
This first enabling project of the Restroom Renovation project builds space for and relocates
two existing tenant functions to provide additional public restroom capacity on the concourse
level of Concourse B. This project will remodel existing space and construct additional space in
order to relocate these tenant functions. 
JUSTIFICATION 
Growing passenger numbers means many restrooms have lines of travelers waiting to use the
facilities during peak times. In part due to the increase in traffic at the airport, vacant space has
been converted to usable space in many areas to accommodate this growth. Because of the
limited vacant space available in the public areas, this project is necessary to create space for
tenant functions that need to be relocated off the concourse level in order to create space for
larger public restrooms. For this request, these tenant functions include an airline crew lounge
and service facility located on Concourse B. Staff anticipates a future request for additional
enabling projects currently being planned. 
DETAILS 
The objectives of the overall Restroom Renovation project are to improve customer service by
adding capacity and modernizing restroom facilities in Concourses B, C, and D and to decrease

Template revised September 22, 2016.

COMMISSION AGENDA  Action Item No. _4d_                                Page 2 of 4 
Meeting Date: September 12, 2017 
Operation and Maintenance (O&M) costs for restrooms. This request supports the overall
project. 
Scope of Work 
This project will: 
(1)   Remodel space on Concourse B concourse level for one tenant function 
(2)   Build new space on Concourse B ramp level for another tenant function 
(3)   Relocate tenant functions into the new spaces 
Small Business 
The scope of work lends a number of opportunities to small and diverse businesses.  The
Project Management Group along with the Small Business Group are partnering together to
maximize the small business knowledge of the project through PortGen activities. 
Schedule 
Activity 
Construction start                             1st Quarter 2018 
In-use date                                    4th Quarter 2018 
Cost Breakdown                                     This Request           Total Project 
Design                                                           $0             $5,087,000 
Construction                                             $2,536,000            $27,960,000 
Total                                                         $2,536,000             $33,047,000 
ALTERNATIVES AND IMPLICATIONS CONSIDERED 
Alternative 1  Do not construct spaces to relocate tenants 
Cost Implications: Capital $0 
Pros: 
(1)   No Capital investment at this time 
Cons: 
(1)   Approximately $600,000 in design would need to be expensed. 
(2)   Future restrooms will not be enlarged and thus continue to have long lines during
peak times. 
(3)   Passenger experience will not improve due to lack of restroom space. 
This is not the recommended alternative. 

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

COMMISSION AGENDA  Action Item No. _4d_                                Page 3 of 4 
Meeting Date: September 12, 2017 
Alternative 2  Construct spaces and relocate airline functions to support the Restroom
Renovations Concourses B, C, and D project 
Cost Implications: $3,255,000 for design and construction 
Pros: 
(1)   This alternative enables expansion and renovation of public restrooms to handle the
high volume of use they receive. 
(2)   This alternative also provides new space to relocate the tenant functions currently in
the space to be used for enlarged restrooms due to the lack of available vacant space. 
Cons: 
(1)   Building new space for relocation of various airline office functions currently in spaces
needed for restroom expansion adds time to the restroom project, delaying
improvements. 
This is the recommended alternative. 
FINANCIAL IMPLICATIONS 
Cost Estimate/Authorization Summary              Capital        Expense           Total 
COST ESTIMATE 
Original estimate                                $11,180,000               $0     $11,180,000 
Previous changes  net                         $21,867,000               $0     $21,867,000 
Current change (tenant move costs)               ($25,000)         $25,000              $0 
Revised estimate                               $33,022,000         $25,000     $33,047,000 
AUTHORIZATION 
Previous authorizations                          $5,087,000               $0      $5,087,000 
Current request for authorization                $2,511,000         $25,000      $2,536,000 
Total authorizations, including this request       $7,598,000         $25,000      $7,623,000 
Remaining amount to be authorized           $25,424,000             $0    $25,424,000 
Annual Budget Status and Source of Funds 
This project, CIP #C800697 was included in the 2017-2021 capital budget and plan of finance
with a budget of $33,047,000. The funding source will be the Airport Development Fund and
future revenue bonds. 
Financial Analysis and Summary 
Project cost for analysis              $33,047,000 
Business Unit (BU)                  Terminal 
Effect on business performance     NOI after depreciation will increase 
(NOI after depreciation) 

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

COMMISSION AGENDA  Action Item No. _4d_                                Page 4 of 4 
Meeting Date: September 12, 2017 
IRR/NPV (if relevant)                N/A 
CPE Impact                       .03 in 2021 and .11 in 2025 
Future Revenues and Expenses (Total cost of ownership) 
Aviation Maintenance anticipates minimal impacts to O&M costs as a result of the scope of
work in this enabling Phase I project, as the tenant would have most of the responsibility in the
tenant spaces.
ATTACHMENTS TO THIS REQUEST 
Presentation slides 
PREVIOUS COMMISSION ACTIONS OR BRIEFINGS 
July 12, 2016  The Commission authorized design for $5,087,000. 












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