COMMISSION 
AGENDA MEMORANDUM                        Item No.          8a 
ACTION ITEM                            Date of Meeting      October 23, 2018 
DATE:     October 15, 2018 
TO:        Stephen P. Metruck, 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:               $8,969,000 
Total estimated project cost:         $38,379,000 
ACTION REQUESTED 
Request Commission authorization for the Executive Director to advertise and execute two
major public works construction contracts for the Restroom Upgrades at Concourses B, C, and D
project at Seattle-Tacoma International Airport. This request is for $8,969,000 of a total project
cost of $38,379,000. 
EXECUTIVE SUMMARY 
This request is to authorize construction for the second and third phases of the five phase
Restroom Upgrades project. Phase  Two builds out office space and employee restrooms
required to relocate three existing tenant functions from concourse to ramp level. This
relocation frees up space on the concourse level to provide new and enlarged public restrooms
for passengers. Phase Three renovates and enlarges one public restroom set on Concourse D. 
Phase Three will have federal grant funds associated with it, which will require the Port to
utilize its Disadvantaged Business Enterprise (DBE) program efforts. 
This request represents a budget increase of $5,300,000. This budget increase is needed to
cover changed site conditions, additional shell space construction and the construction of
expanded building envelope. 
JUSTIFICATION 
The public restrooms on Concourses B, C, and D are old, outdated, and overcrowded. They are
difficult to maintain due to the age of the finishes and fixtures, have endured water infiltration
and damage, and have limited air circulation and odors that have penetrated the finishes. Of
the existing eight pairs of restrooms, three have not been remodeled since 2001, and five have
not been renovated since their construction in 1992. Additionally, because of passenger traffic
growth, the existing restrooms are too small resulting in long lines during peak periods of use.
Because there are no vacant spaces on the concourse level to add restrooms or increase
existing restroom size, Phase Two of this project is necessary to create space for larger public

Template revised April 12, 2018.

COMMISSION AGENDA  Action Item No. _8a__                               Page 2 of 5 
Meeting Date: October 23, 2018 
restrooms. Phase three will renovate the existing public restrooms near Gate D6 to improve
maintainability, accessibility, and passenger experience.
DETAILS 
The objectives of the overall Restroom Upgrade project are to: 
(1)   Improve  the  passenger  experience  by  adding  capacity  and  modernizing  public
restroom facilities in Concourses B, C, and D; and 
(2)   Decrease Operation and Maintenance (O&M) costs for public restrooms. 
Scope of Work 
These two project phases will: 
(1)   Build new and renovate existing tenant office space on the ramp level of Concourse C 
(2)   Renovate and enlarge one set of employee restrooms on the ramp level of Concourse
C 
(3)   Renovate and enlarge one set of public restrooms on Concourse D 
Diversity in Contracting 
Work associated with phases 2 and 3 have several opportunities for Woman and Minority
Business Enterprises (WMBE).
Phase 2 of the restroom project will have a WMBE aspirational goal associated with it. Phase 3,
specifically, will have federal grant dollars associated with this phase. As one of the conditions
for obtaining the grant dollars, the U.S. Department of Transportation requires the use of its
certified Disadvantaged Business Enterprises (DBE) program per 49 CFR Part 26. Based upon
those available certified businesses, a DBE goal will be established. 
In partnership with the Small Business Development Department (SBDD), project staff has
outreached to those small, WMBE, and DBE businesses via PortGen activities, and through last
month's Airport Minority Advisory Council (AMAC) DBE conference. 
Schedule 
Activity 
Construction start                             1st Quarter 2019 
In-use date                                    4th Quarter 2019 
Cost Breakdown                                      This Request           Total Project 
Design                                                           $0             $5,087,000 
Construction                                             $8,969,000            $33,292,000 
Total                                                          $8,969,000             $38,379,000 

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

COMMISSION AGENDA  Action Item No. _8a__                               Page 3 of 5 
Meeting Date: October 23, 2018 

ALTERNATIVES AND IMPLICATIONS CONSIDERED 
Alternative 1  Status Quo  Do not construct spaces to relocate tenants or renovate existing
restroom.
Cost Implications: $(927,000) 
Pros: 
(1)   No Capital investment at this time. 
Cons: 
(1)   Approximately $927,000 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. 
Alternative 2  Construct spaces, relocate airline functions to support the Restroom Upgrades 
Concourse B, C, and D project and renovate one set of public restrooms on Concourse D. 
Cost Implications: $8,969,000 
Pros: 
(1)   This alternative enables the first restroom set to be enlarged and renovated in the
public area. 
(2)   The  alternative  enables  future  expansion  and  renovation  of  public  restrooms  to
handle the high volume of use they receive. 
(3)   This alternative also provides new space to relocate the tenant functions currently on
the concourse level to make room for public restrooms. 
Cons: 
(1)   As restrooms are renovated they become unavailable to the public at that location
and traveling public will need to be redirected to other restrooms. 
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  
(including tenant relocation costs)               $21,842,000         $25,000     $21,867,000 

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

COMMISSION AGENDA  Action Item No. _8a__                               Page 4 of 5 
Meeting Date: October 23, 2018 
Current change                                 $5,316,000         $16,000      $5,332,000 
Revised estimate                               $38,338,000         $41,000     $38,379,000 
AUTHORIZATION 
Previous authorizations                          $7,598,000         $25,000      $7,623,000 
Current request for authorization                $8,953,000         $16,000      $8,969,000 
Total authorizations, including this request      $16,551,000         $41,000     $16,592,000 
Remaining amount to be authorized           $21,787,000             $0    $21,787,000 
Annual Budget Status and Source of Funds 
This project, CIP #800697 was included in the 2018-2022 capital budget and plan of finance
with a budget of $33,047,000. The total cost increase of $5,316,000 was transferred from the
Aeronautical Allowance (CIP #C800753), resulting in no net change to the capital budget. The
funding source will be the Airport Development Fund, FAA Airport Improvement Program
grants, and future revenue bonds. CPE impacts below assume total grants of $13.6 million. 
Financial Analysis and Summary 
Project cost for analysis              $38,379,000 
Business Unit (BU)                  Terminal 
Effect on business performance     NOI after depreciation will increase 
(NOI after depreciation) 
IRR/NPV (if relevant)                N/A 
CPE Impact                        $0.07 in 2021 with AIP grant, $.10 without AIP grant 
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 Phases 2 and 3 of the project. In the enabling Phase 2 project, the tenant would have
most of the responsibility in the tenant spaces, and in Phase 3 only one public restroom set on
Concourse D is being renovated and enlarged. 
ATTACHMENTS TO THIS REQUEST 
Presentation slides 
PREVIOUS COMMISSION ACTIONS OR BRIEFINGS 
October 23, 2018  The Commission will hear a briefing on the status of the motion to
develop a Seattle-Tacoma International Airport gender-inclusive restroom plan. 
May 22, 2018   The Commission heard a motion to  develop a Seattle-Tacoma
International Airport gender-inclusive restroom plan. 

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

COMMISSION AGENDA  Action Item No. _8a__                               Page 5 of 5 
Meeting Date: October 23, 2018 
September 12, 2017  The Commission authorized the construction of Phase One of
this project for $2,536,000. 
July 12, 2016  The Commission authorized the design for $5,087,000. 

















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