COMMISSION 
AGENDA MEMORANDUM                        Item No.          10d 
ACTION ITEM                            Date of Meeting     November 17, 2020 
DATE:     November 9, 2020 
TO:        Stephen P. Metruck, Executive Director 
FROM:    Dawn Hunter, Director, Aviation Commercial Management 
Wayne Grotheer, Director, Aviation Project Management 
Matt Breed, Chief Information Officer, Information & Communications Technology 
SUBJECT:  Parking Revenue Infrastructure (CIP #C800870) 
Amount of this request:              $11,654,000 
Total estimated project cost:         $22,898,000 
ACTION REQUESTED 
Request Commission authorization for the Executive Director to advertise and award a major
works construction contract for the Parking Revenue Infrastructure Project at Seattle-Tacoma
International Airport (Airport). The amount of this request is $11,654,000 for a total estimated
project cost of $22,898,000. 
EXECUTIVE SUMMARY 
This project will provide for the design and installation of new infrastructure in the Airport
parking garage, including the installation of a camera-based Automated Parking Guidance System
(APGS) with automated license plate recognition (ALPR) throughout the garage (approx. 12,300
stalls) and electric vehicle supply equipment (EVSE) in the form of 94 Level 2 electric vehicle (EV)
charging stations. 
The Parking Revenue Infrastructure CIP (C800870) is included in the 2020 -2024 capital budget
and plan of finance. This infrastructure project will provide opportunities to increase nonaeronautical
revenue for the Airport by maximizing available garage occupancy, most specifically
by integrating the APGS' demand-based/variable pricing capabilities with the Airport's new
online parking pre-booking/yield management system. The project will significantly improve the
customer experience by reducing time required to find a vacant parking stall (time savings
estimated at 50%), and will improve the navigation, charging speed, and availability of electric
vehicle charging infrastructure from 48 to 96 stalls. In addition to the environmental benefits of
increased plug-in electric vehicle amenities, the project will also result in reduced emissions from 
fossil fueled vehicles searching for available spaces in the garage (reduction of 17-20 metric tons
CO2 per year). 

Template revised January 10, 2019.

COMMISSION AGENDA  Action Item No. 10d                                 Page 2 of 9 
Meeting Date: November 17, 2020 
JUSTIFICATION 
The parking garage is the single largest source of non-aeronautical revenue for the Airport ($80m
in 2019) and is critical to funding the infrastructure investments needed to ensure that the
Airport meets the region's air transportation needs in the coming decades. 
The best opportunity to increase non-aeronautical revenue, improve the overall customer
experience, and reduce the environmental impact of vehicles in the parking garage is through 
the installation of an APGS. This is a system of cameras using ALPR software and LED lighting
down each row to denote whether a parking stall is occupied or vacant, making it much easier
for a customer to find a vacant stall. 
Due to the rapid growth in enplanements over the past five years ending 2019, and the sheer
magnitude of the garage (12,300 stalls spread across eight floors), it has become increasingly
difficult for parking customers to find an open stall during periods of high occupancy  at times
even when these stalls are readily available. Electric charging infrastructure stalls are also
regularly full and located in multiple locations throughout the garage, making it more challenging
and unpredictable for plug-in electric vehicle customers to meet their needs. The inability to find
a stall in a timely manner becomes a lost revenue opportunity for the Airport, as the driver leaves
the garage believing that the garage is full, or they are just too frustrated to continue searching. 
By integrating an APGS with the Airport's parking revenue control system and online parking prebooking
system, the Airport will be able to implement variable pricing (to better leverage 
available garage occupancy), and drive incremental revenue opportunities (by dynamically
adjusting a customer's ticket based on the location or type of parking stall selected). Real-time
information provided by the system will help Airport staff to know exact stall availability in the
garage at all times of day. 
The installation of an APGS also provides an opportunity to increase electric vehicle charging
capacity in the garage, improve navigation, and expand the number and charging speed of
electrical charging stations to meet public demand. Currently, there are 48 Level 1 public parking
charging receptacles in the garage that are consistently occupied due to the growth in the
number of electrical vehicles driven by the travelling public. This project will nearly double the
number of EV charging stations to 94 stalls, as well as provide the capability to double the vehicle
charging capacity (120V vs 240V power supply). It also provides the opportunity for further EV
stall expansion should future demand require it. This will improve customer service for plug-in
vehicle drivers, while also helping reduce emissions from ground transportation. 
While the COVID-19 pandemic has negatively impacted non-aeronautical revenue in the near
term, projections show the Airport returning to 2019 enplanement numbers between 2023 - 
2024. As parking transactions historically track to O/D enplanements, garage revenue is
anticipated to follow these projections. Obtaining Commission approval today ensures that this
multi-year construction project will be completed and fully operational across all floors of the
garage by 2024 and will reduce the operational impacts from construction activities. 

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

COMMISSION AGENDA  Action Item No. 10d                                 Page 3 of 9 
Meeting Date: November 17, 2020 
This project supports the Century Agenda strategic goals and objectives to advance this region as
a leading tourism destination and business gateway by meeting the region's air transportation
needs at the Airport for the next 25 years, and be the greenest and most energy efficient port in
North America by reducing air pollutants and carbon emissions. It also supports the Aviation
Division strategies to provide an extraordinary customer experience and maximize nonaeronautical
net operating income. 
Diversity in Contracting 
The project staff, in coordination with the Diversity in Contracting department, have set an 8%
woman and minority-owned business enterprise (WMBE) aspirational goal for the Parking
Revenue Infrastructure construction contract. 
DETAILS 
Scope of Work 
(1)   Provide an APGS throughout all public parking areas of the garage (approx. 12,300
stalls): Parking Garage Floors 0 (sublevel), 1, 2, 3, 4, 5, 6, 7, 8, adjacent over-height
parking area, and parking entries. 
The APGS includes the procurement and installation of all software and hardware to
support the system. The system will include networked ALPR cameras, and LED lighting
indicators to detect and denote real-time individual stall occupancy/availability and
individual vehicle identification; interior and exterior dynamic wayfinding signage,
including floor, section and row count displays; and enterprise software for system
management, security/surveillance, reporting, etc. 
(2)   Provide EVSE, on parking garage Floors 1, 4 and 7. This includes a total of 12 Level 1 EV
charging stations, and 94 Level 2 EV charging stations. 
(3)   Provide electrical and communications infrastructure and/or upgrades within the
Parking Garage to support the APGS and EVSE installations. 
(4)   Decommission and remove existing floor count system within the parking garage. 
(5)   Remove existing public-facing Level 1 EV charging station receptacles and associated
branch circuit back to panelboard. Existing Level 1 EV charging stations being removed
include 12 dedicated receptacles on Floor 4 and 36 dedicated receptacles on Floor 5. 



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

COMMISSION AGENDA  Action Item No. 10d                                 Page 4 of 9 
Meeting Date: November 17, 2020 
Schedule 
Activity 
Construction start                                2021 Quarter 2 
In-use date                                       2023 Quarter 1 
Cost Breakdown                                     This Request           Total Project 
Design                                                           $0            $11,244,000 
Construction                                            $11,654,000            $11,654,000 
Total                                                        $11,654,000             $22,898,000 
ALTERNATIVES AND IMPLICATIONS CONSIDERED 
Alternative 1  Maintain the Status Quo, do not install the Automated Parking Guidance System
or EV charging. 
Cost Implications: An estimated $1,500,000 in costs to date would need to be expensed if this
project is not approved. 
Pros: 
(1)   No capital investment required. 
Cons: 
(1)   Does not provide opportunities for additional parking revenue. 
(2) Does not address the parking operation's #1 customer experience shortcoming: ease of
finding a parking stall. 
(3)   Does not provide any reduction of environmental impacts/CO2 emissions. 
(4)   Does  not  address  the  public  demand  and  increasing  use  of  electric  vehicles  by
customers and employees. 
This is not the recommended alternative. 
Alternative 2  Install an automated parking guidance system (APGS) on the Terminal Direct/4th 
floor (1,700 stalls) and install 94 Level 2 EV charging stations for general public and Port employee
use. 
Cost Implications: $8,000,000 
Pros: 
(1)   Reduces capital investment. 
(2)   Provides a better customer experience on the Terminal Direct/4th floor of parking
garage (reducing time required for preferred customers to find an unoccupied stall). 
(3)   Reduces environmental impacts/CO2 emissions for 4th Floor parking. 
(4)   APGS Head-end equipment and software development would be complete and ready
for future expansion to other floors. 

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

COMMISSION AGENDA  Action Item No. 10d                                 Page 5 of 9 
Meeting Date: November 17, 2020 
(5)   Supplies additional charging capacity to address the public demand and increasing use
of electric vehicles by customers and employees. 
(6) Provides a "charge friendly" location for EV owners which will help reduce vehicle
emissions and thereby further the Port Century Agenda objective to "Be the greenest
and most energy efficient port in North America." 
Cons: 
(1)   Parking revenue generation opportunities limited solely to the 4th Floor. Does not
provide opportunities to maximize parking revenue, enhance the promotion of
available parking offerings and amenities, or reduce operational staff time on other
floors of the garage. 
(2)   Would only be able to manage garage occupancy on the 4th Floor in real-time and utilize
available stall inventory. 
This is not the recommended alternative. 
Alternative 3  Install an APGS on all floors (12,300 stalls) of the parking garage (Floors 1-8, Sub-
Level, and Over height) and the installation of 94 Level 2 EV charging stations on Floors 4 and 7
of the garage for general public and Port employee use. 
Cost Implications: $22,898,000 
Pros: 
(1)   Allows the Airport to effectively maximize revenue throughout all floors/stalls of the
parking garage via system integrations with the online parking pre-booking/reservation
system (OBS) and the parking revenue control system. 
(2) Addresses the Airport parking operation's #1 customer experience shortcoming: ease
of finding a parking stall. Provides a preferred customer experience throughout all
floors/stalls of the parking garage. 
(3)   Allows the Airport to better manage occupancy for all floors of the garage in real-time
(24/7/365) including available parking inventory (unoccupied stalls) to achieve optimal
garage occupancy of 90%. 
(4)   Enhances the promotion of available parking offerings and amenities and reallocates
operational staff time spent conducting nightly vehicle-based stall inventory to other
customer service functions. 
(5)   Reduces environmental impacts/CO2 emissions. Will decrease CO2 emissions from
passenger vehicles by an estimated 17 to 20 tons per year when average circulation
time is reduced by one minute per driver. 
(6)   Supplies additional charging capacity to address the public demand and increasing use
of electric vehicles by customers and employees, further reducing emissions. 
(7) Provides a "charge friendly" predictable location for EV owners which will help remove
vehicle emissions and thereby further the Port Century Agenda objective to "Be the
greenest and most energy efficient port in North America." 


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

COMMISSION AGENDA  Action Item No. 10d                                 Page 6 of 9 
Meeting Date: November 17, 2020 

Cons: 
(1)   Increases capital investment 
(2)   Increased operational impacts during construction, if pandemic recovery is quicker than
forecasted. 
(3)   Reduced benefit, if pandemic recovery does not occur as forecasted. 
This is the recommended alternative. 
FINANCIAL IMPLICATIONS 
Cost Estimate/Authorization Summary               Capital        Expense           Total 
COST ESTIMATE 
Original estimate                                $22,798,000        $100,000     $22,898,000 
AUTHORIZATION 
Previous authorizations                         $11,244,000                0     $11,244,000 
Current request for authorization               $11,554,000        $100,000     $11,654,000 
Total authorizations, including this request      $22,798,000        $100,000     $22,898,000 
Remaining amount to be authorized                    $0             $0             $0 
Annual Budget Status and Source of Funds 
This project was included in the 2020-2024 capital budget and plan of finance with a budget of
$22,798,000. The funding sources will include the Airport Development Fund and future revenue
bonds. 
Financial Analysis and Summary 
Project cost for analysis              $22,898,000 
Business Unit (BU)                  Public Parking 
Effect on business performance    o  Cumulative incremental net operating income of
(NOI after depreciation)                $21.8 million (based on most likely scenario  70%
occupancy threshold) is anticipated to be directly
associated with this project for the first eight years of
product useful life (2022-2029). 
This project will increase depreciation by approximately 
$2 million per year. This depreciation has been factored
into the NOI above. 
IRR/NPV (if relevant)                Most likely scenario (based 70% occupancy threshold)  
7%/$2,600,000 based on 2018 information. 
CPE Impact                       N/A 

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

COMMISSION AGENDA  Action Item No. 10d                                 Page 7 of 9 
Meeting Date: November 17, 2020 
Lifecycle Cost and Savings 
This project replaces existing floor count equipment that is obsolete. The new APGS and EVSE
equipment will have a material impact on current Aviation Maintenance Operations and
Maintenance (O&M) costs. As the design for these two systems is not yet complete, and the
providers have not been identified, estimated O&M costs can vary significantly from provider to
provider. A reasonable range of annual O&M costs would be between $170,000 and $250,000. A
better estimate of ongoing costs can be provided once a service provider and service delivery
method have been finalized. 
Future Revenues and Expenses (Total cost of ownership) 
The Airport implemented an OBS in November 2019, which utilizes yield management principles
and variable rate pricing capabilities to better leverage available garage occupancy and maximize
revenue. Revenue attainable through the OBS hinges on the Airport's ability to fully leverage
available garage inventory and sell open stalls at competitive rates to consistently achieve a
garage occupancy of 90% at all times of day. This requires the ability to monitor garage occupancy
in  real-time  24/7/365,  accurately  forecast  future  occupancy,  and  most  significantly,
minimize/eliminate any degradation to customer experience (ability to find an open stall) when
the garage is at or near maximum occupancy. 
Airport staff have found that a customer's ability to find an open stall starts to degrade when the
garage hits a threshold of approximately 70% occupancy at any point in time. This could be due
to many factors, including the sheer magnitude of the garage (12,300 stalls spread across eight
floors) and the non-traditional V-shaped design of the structure. As 2019 average peak overnight
occupancy was approximately 54%, the assumption is that the Airport could use OBS technology
to fill the 16% in available garage occupancy before a customer experiences any degradation in
their ability to find a stall (70% - 54% = 16%). 
The value of an APGS is the incremental revenue from the percentage of occupancy between the
current 70% occupancy threshold (noted above) vs. the garage's actual maximum occupancy of
90%. (On average, 10% of stalls are traditionally excluded from overall garage occupancy to
account for any unanticipated drive-up customers and/or parking program participant
requirements). Without the level of precision an APGS provides, the Airport would need to scale
back the number of available stalls allocated for sale in the OBS to the 70% maximum occupancy
threshold to ensure an adequate level of service (thus reducing the ability to maximize parking
revenue). 
With OBS/APGS/PRCS systems integration, the Airport is anticipated to generate an average of
$3.7 million - $6.5 million/year in incremental revenue through the utilization of the 20-25% in
available garage occupancy (90% - 70% = 20%). This revenue assumption is based on return to
2019 enplanement levels and assumed occupancy and revenue differences between 1) the standalone
implementation of an online parking pre-booking system and 2) the implementation of an
online parking pre-booking system integrated with an automated parking guidance system in the

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

COMMISSION AGENDA  Action Item No. 10d                                 Page 8 of 9 
Meeting Date: November 17, 2020 
garage. The revenue increase  is derived from the utilization of available garage occupancy to
achieve a daily 90% occupancy rate. 
ADDITIONAL BACKGROUND 
Ability to Enhance Airport Environmental Goals 
The Airport has well-established environmental programs and is working to reduce the carbon
footprint of the Airport, its tenants, airlines, contractors, visitors, and employees. The Port's
Century Agenda sets clear goals for improving air quality and reducing greenhouse gas emissions.
The EVSE portion of the project includes the installation of 94 Level 2 EV charging stations in the
garage. This includes 30 Level 2 EV chargers on 4th floor for premium parking (Terminal Direct),
and 64 Level 2 EV chargers on the 7th floor for general passenger and employee use (General
Parking). Installation also includes 12 Level 1 charging stations on the 1st floor for fleet. Public
demand and increasing use of EVs by customers and employees are driving the need to supply
additional electrical charging capacity in the garage. 
This project will ensure drivers of plug-in electric vehicles have improved amenities and is
anticipated to improve confidence of charging availability while reducing range anxiety for
electric vehicle drivers traveling longer distances. While the exact emission reductions are
difficult to quantify given the range of driving distances and battery sizes, drivers of EVs using 
electricity  provided  by  the  airport  reduce  their  emissions  by  79%  compared  to  internal
combustion engine vehicles. 
An APGS would reduce overall dwell time for customers in the garage, as it would eliminate the
need to search multiple rows -- and during peak occupancy periods multiple floors -- to find an
unoccupied stall in the garage, thus reducing vehicle emissions. Portland International Airport
found that when their APGS was installed in 2007, the average driving time in their garage
decreased by 50%, from two minutes down to less than one minute. 
An environmental benefit analysis indicated that an APGS would reduce passenger vehicle
emissions by providing drivers with more efficient access to available parking spots. In terms of
greenhouse gas emissions, an APGS would decrease CO2 emissions from passenger vehicles by
an estimated 17 to 20 tons per year when average circulation time is reduced by one minute per
driver. Other emission benefits include reductions of carbon monoxide, nitrogen oxides, and
particulate matter within the garage. 
ATTACHMENTS TO THIS REQUEST 
(1)   Presentation slides 



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

COMMISSION AGENDA  Action Item No. 10d                                 Page 9 of 9 
Meeting Date: November 17, 2020 
PREVIOUS COMMISSION ACTIONS OR BRIEFINGS 
October 23, 2018  The Commission authorized $10,946,171 to (1) prepare design and
construction bid documents for the Parking Revenue Infrastructure project at Seattle-
Tacoma International Airport; (2) procure required hardware, software, vendor services,
licensing, and maintenance services for an Automated Parking Guidance System (APGS);
(3) use port crews and small works contracts for preconstruction activities; and (4) initiate
pre-production setup and configuration of the APGS. 
















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