COMMISSION
AGENDA MEMORANDUM
Item No.
ACTION ITEM
Date of Meeting
8k
September 10, 2024
DATE:
September 6, 2024
TO:
Stephen P. Metruck, Executive Director
FROM:
Keri Stephens, Director, Aviation Facilities and Capital Programs
Eileen Francisco, Director, Aviation Project Management
SUBJECT: Parking Garage Low Voltage Upgrades (CIP# C800901)
Amount of this request:
Total estimated project cost:
$8,344,000
$12,544,000
ACTION REQUESTED
Request Commission authorization for the Executive Director to (1) advertise, award, and
execute a major works construction contract; (2) execute related project change orders,
amendments, work authorizations, purchases, contracts, and take other actions necessary to
support and deliver the Parking Garage Low Voltage project within the approved budget; and (3)
authorize use of Port of Seattle crews to support construction activities. This request is for
$8,344,000 of a total estimated cost of $12,544,000.
EXECUTIVE SUMMARY
Many of the existing power distribution panels in the parking garage at the Seattle-Tacoma
International Airport (STIA) have been in service for over 30 years and have exceeded their
serviceable life expectancy. The equipment is in many cases equipped with parts which are no
longer available from the manufacturer or are no longer able to be maintained by the Port of
Seattle's electrical shop. This project will renew and/or replace existing normal and emergency
low voltage (480/277V and 208/120V) electrical distribution equipment within the parking
garage at STIA. This project is part of a multiple project plan to upgrade electrical infrastructure
in the Main Terminal, Concourses B, C and D, and the Parking Garage.
JUSTIFICATION
Due to the age and conditions of some electrical equipment in use throughout STIA, risk of failure
is moderate to high. A failure of electrical equipment can result in power outages in key areas of
STIA parking garage impacting travelers for extended periods of time. As part of the planning
phase of this projects, all existing electrical equipment was surveyed and panels with the highest
risk of failure and resulting operational impact were identified as needing replacement.
Template revised January 10, 2019.
COMMISSION AGENDA - Action Item No. 8k
Meeting Date: September 10, 2024
Page 2 of 4
Equipment in the Parking Garage has several common issues:
• Beyond service life (40+ years in many cases)
• Poor condition
• Obsolescence / no spare parts available
• Code compliance
• Arc Flash warning labeling
• Lack of available spare circuit breakers
• Lack of available space in existing electrical rooms
• Panels with no individual disconnecting means (daisy-chaining)
• Working clearance
This project will renew & replace electrical equipment throughout the STIA parking garage,
update electrical infrastructure, improve safety, add metering capability, and reduce the risk of
failures and outages at STIA. The project will primarily address lighting panels, many of which can
be replaced during daylight hours. Existing panels are not consistently metered and labeled,
particularly for older equipment. This project will implement metering for all replaced panels,
which will provide opportunities for future energy conservation projects.
Diversity in Contracting
The Port of Seattle's Diversity in Contracting Department performed a Women & Minority
Business Enterprises (WMBE) availability analysis during the Notebook phase of these projects.
Per this evaluation, an aspirational goal of 13% WMBE participation was determined for the
project (C800901.)
DETAILS
Approximately 80 electrical panels have been identified for replacement. Replacement will
include but is not limited to panelboards, motor control centers, switchboards, feeders, meters,
and transformers. The work will be carried out in a manner that minimizes disruptions to normal
airport operations.
Scope of Work
•
•
•
Install new panels in existing panel locations if the existing does not meet code.
Provide new metering in all replaced panelboards, along with connection to the STIA
metering network.
Electrical Rooms:
 Replace existing doors with new doors with panic hardware.
 Fire protection & HVAC systems will be upgraded as necessary to support
electrical equipment.
 Install new Exhaust fans in electrical rooms that have heating concerns.
 Install new Air handling unit for a power center room.
 Secure wall penetrations installed in power center room and electrical rooms.
 Abatement as required for existing door sealants.
Template revised June 27, 2019 (Diversity in Contracting).
COMMISSION AGENDA - Action Item No. 8k
Meeting Date: September 10, 2024
•
Page 3 of 4
Other project elements include Circuit tracing and shared neutrals investigation.
Schedule
Construction start
In-use date
2025 Quarter 1
2027 Quarter 1
Cost Breakdown
This Request
Total Project
Design
Construction
Total
$0
8,344,000
$8,344,000
$4,200,000
8,344,000
$12,544,000
ALTERNATIVES AND IMPLICATIONS CONSIDERED
Alternative 1 - Do not proceed.
Cost Implications: $1,300,000 in planning and design funds spent to date would need to be
expensed.
Pros:
(1)
No additional capital costs.
Cons:
(1)
(2)
(3)
High risk of panel failures, resulting in outages and significant operational impacts.
Added costs to small capital and tenant projects replacing panels on an as-needed basis.
Systems will eventually need to be replaced, either by failure or preventative measures.
This is not the recommended alternative.
Alternative 2 - Replace At-Risk Equipment
Cost Implications: $12,544,000
Pros:
(1)
(2)
(3)
Cons:
(1)
Equipment in poor condition or at high risk of failure prioritized for replacement.
Replace equipment that is beyond their end-of-use timeframe and no longer meets
current National electrical code (NEC) requirements.
Utilize full useful life from existing panels.
Additional Capital Cost.
This is the recommended alternative.
Template revised June 27, 2019 (Diversity in Contracting).
COMMISSION AGENDA - Action Item No. 8k
Meeting Date: September 10, 2024
Page 4 of 4
FINANCIAL IMPLICATIONS
Cost Estimate/Authorization Summary
Capital
Expense
Total
COST ESTIMATE
Original estimate
Previous Change
Current Estimate
$3,267,428
$9,276,572
$12,544,000
$0
$0
$0
$3,267,428
$9,276,572
$12,544,000
AUTHORIZATION
Previous authorizations
Current request for authorization
Total authorizations, including this request
Remaining amount to be authorized
$4,200,000
$8,344,000
$12,544,000
$0
0
0
0
$0
$4,200,000
$8,344,000
$12,544,000
$0
Annual Budget Status and Source of Funds
The project, C800901 Parking Garage Low Voltage Upgrade was included in the 2024-2028 capital
budget and plan of finance with a budget of $12,544,000. The funding source will be the Airport
Development Fund and revenue bonds. This budget was increased by $9,276,572. This increase
was due to the number of panels needing replacement, the need for relocating panels and
building new electrical rooms, measures to reduce operational impacts, etc.
Financial Analysis and Summary
Project cost for analysis
Business Unit (BU)
Effect on business performance
(NOI after depreciation)
IRR/NPV (if relevant)
CPE Impact
$12,544,000
Parking
NOI after depreciation will decrease
N/A
N/A
ATTACHMENTS TO THIS REQUEST
(1) Presentation
PREVIOUS COMMISSION ACTIONS OR BRIEFINGS
January 4, 2022 - The Commission authorized the Executive Director to (1) complete design,
(2) advertise and execute up to two professional services contracts for design services for
the Concourse Low Voltage Upgrade project (CIP C801280) and the Parking Garage Low
Voltage Upgrade project (CIP C800901), (3) advertise and execute a General Contractor,
Construction Manager (GCCM) construction contract and authorize pre-construction
services for CIP C801280, (4) issue a job order contract (JOC) to carry out pre-construction
services for CIP 800901, and (5) use Port of Seattle crews for pre-construction activities
for CIPs C801280 and C800901.
Template revised June 27, 2019 (Diversity in Contracting).