COMMISSION 
AGENDA MEMORANDUM                        Item No.          6g 
ACTION ITEM                            Date of Meeting      March 24, 2020 
DATE:     March 16, 2020 
TO:        Stephen P. Metruck, Executive Director 
FROM:    Laurel Dunphy, Director, Aviation Operations 
Wayne Grotheer, Director, Aviation Project Management 
SUBJECT:  Building 161D Air Cargo Modifications Project (CIP #C801051) 
Amount of this request:                 $390,000 
Total estimated project cost:            $600,000 
ACTION REQUESTED 
Request Commission authorization for the Executive Director to complete design and proceed
with building alterations and ramp construction for Building 161D Modifications at the Seattle-
Tacoma International Airport and use Port Construction Services, including Port crews, in an
amount not to exceed $390,000 of a total project cost estimate of $600,000. 
EXECUTIVE SUMMARY 
Building 161D, formerly occupied by United Parcel Service (UPS), and also  known as BT
Properties, reverted to Port of Seattle (Port) ownership at the end of 2018, following the
expiration of its ground lease. The building is currently configured for truck operations only.
Two overhead cargo bay doors will be reconfigured into a single wide opening in conjunction
with construction of a sloped ramp from the truck bay level to ground level to provide ground
equipment access into/onto the Airport Operations Area (AOA). The purpose is to help relieve
unmet demand for airside cargo handling access into the active AOA.
JUSTIFICATION 
The operational justification for this project is the need to utilize available airfield warehouse
space to facilitate the movement of air cargo onto and off the field to accommodate demand
for trade and to relieve existing space congestion. This project will repurpose 16,000 square
feet of existing space formerly used in a truck to truck-only configuration to allow movement of
cargo from trucks,  through the building and to AOA secured aircraft,  and the reverse.
Constructing the ramp provides an efficient connection from the elevated level of the
warehouse floor to the level of the airfield surface; similar to other air cargo buildings with
airfield access, for airfield tugs pulling a string of cargo dollies. 


Template revised January 10, 2019.

COMMISSION AGENDA  Action Item No. _6g___                              Page 2 of 5 
Meeting Date: March 24, 2020 
The leasehold revenue stream from this building has increased following its complete return to
Port ownership and will be sufficient to repay the cost of building modifications in three years.
Prior to the building reverting completely to Port ownership, revenue from the combined
building and ground lease was approximately $240,000 annually. Under full Port ownership,
and with the modifications facilitating efficient use of the building by an airfield cargo
operations tenant, lease revenues will be approximately $485,000 annually, for an incremental
increase of approximately $200,000  (net of estimated annual expenses of $45,000). This
incremental revenue will provide a payback on the capital project in approximately 3.0 years
based on the $600,000 project cost. This relatively short payback period will occur within the
span of the first operational lease period to the tenant, and thus carries low risk. 
Diversity in Contracting 
For the 161D Building Modifications, PCS crews as well as small works contracts will be utilized
for this project. Although WMBE aspirational goals are not set on small works contracts,
typically these types of projects are primed by small businesses. Project staff is working with
the Diversity in Contracting department to outreach to WMBE businesses whom may be
interested in this project 
DETAILS 
Scope of Work 
(1)   Modification of two cargo bay doors into a single opening 
(2)   Construction of a ramp from ground level to loading dock level in alignment with door
modifications 
(3)   Improve external lighting above door opening 
Schedule 
Commission construction authorization          2020 Quarter 1 
Construction start                                2020 Quarter 2 
In-use date                                       2020 Quarter 2 
Cost Breakdown                                      This Request           Total Project 
Design                                                                           $210,000 
Construction                                               $390,000               $390,000 
Total                                                            $390,000                $600,000 



Template revised June 27, 2019 (Diversity in Contracting).

COMMISSION AGENDA  Action Item No. _6g___                              Page 3 of 5 
Meeting Date: March 24, 2020 
ALTERNATIVES AND IMPLICATIONS CONSIDERED 
Alternative 1  Do nothing - Lease Building 161D as is with single bay, elevator ramp to newly
connected AOA access. 
Cost Implications: $0 
Pros: 
(1)   Tenant able to operate in building 
(2)   Helps relieve demand for air cargo facilities that are connected to the AOA 
(3)   Allows tenant to make office space reconfigurations to their own specifications and
needs 
Cons: 
(1)   Building and cargo tenant are less efficient without direct ramp access for tugs and
dolly strings 
(2)   High use of the hydraulic cargo elevator may result in higher maintenance costs 
This is not the recommended alternative. 
Alternative 2  Modify Building 161D for functional air cargo support uses by modifying two (2)
overhead cargo bay doors at the SW corner of the building (Doors 17 and 18) into a single
opening. Provide a new ramp from grade level to the warehouse floor in relation to the newly
modified opening with direct AOA access, and refurbish office spaces. 
Cost Implications: $900,000 
Pros: 
(1)   Helps relieve demand for air cargo facilities that are connected to the AOA 
(2)   Larger opening and drivable ramp increases efficiency of direct AOA access and
increases work flow 
Cons: 
(1)   Longer schedule duration 
(2)   Significant cost increases over other alternatives 
This is not the recommended alternative. 
Alternative 3  Modify Building 161D for functional air cargo support uses by modifying two (2)
overhead cargo bay doors at the SW corner of the building (Doors 17 and 18) into a single
opening. Provide a new ramp from grade level to the warehouse floor in relation to the newly
modified opening with direct AOA access.
Cost Implications: $600,000 
Pros: 
(1)   Helps relieve demand for air cargo facilities that are connected to the AOA 
(2)   Easiest alternative to accomplish in the shortest time period to allow for new tenant
to become operational with a high degree of operational efficiency 

Template revised June 27, 2019 (Diversity in Contracting).

COMMISSION AGENDA  Action Item No. _6g___                              Page 4 of 5 
Meeting Date: March 24, 2020 
(3)   Allows tenant to make office space reconfiguration to their own specifications and
needs 
(4)    Larger opening and ramp increases direct AOA access and increases work flow 
Cons: 
(1)   Tenant makes own space modifications 
This is the recommended alternative. 
FINANCIAL IMPLICATIONS 
The estimate reduction shown below is the combined scope change to delete office space
refurbishment and by the prior decision to transfer the AOA Fence connection portion to the
on-going AOA Perimeter Fence Line project. 
Cost Estimate/Authorization Summary               Capital        Expense           Total 
COST ESTIMATE 
Original estimate                                   $900,000               $0        $900,000 
Estimate Changes                              ($300,000)                     ($300,000) 
Revised estimate                                 $600,000               0       $600,000 
AUTHORIZATION 
Previous authorizations                            $210,000                0        $210,000 
Current request for authorization                  $390,000                0        $390,000 
Total authorizations, including this request         $600,000                0        $600,000 
Remaining amount to be authorized                    $0             $0             $0 
Annual Budget Status and Source of Funds 
This project is included in the 2020-2024 capital budget and plan of finance with a budget of
$900,000. The budget decrease will be transferred to the Aeronautical Reserves CIP (C800753)
resulting in zero net change to the Aviation capital budget. The funding source would be the
Airport Development Fund (ADF). 
Financial Analysis and Summary 
Project cost for analysis              $600,000 
Business Unit (BU)                  Airfield Commercial Area 
Effect on business performance     NOI after depreciation will decrease 
(NOI after depreciation) 
IRR/NPV (if relevant)                N/A 
CPE Impact                        N/A 


Template revised June 27, 2019 (Diversity in Contracting).

COMMISSION AGENDA  Action Item No. _6g___                              Page 5 of 5 
Meeting Date: March 24, 2020 
ATTACHMENTS TO THIS REQUEST 
(1)   Presentation slides 
PREVIOUS COMMISSION ACTIONS OR BRIEFINGS 
None 
















Template revised June 27, 2019 (Diversity in Contracting).