Item No. 9b supp 
Meeting Date: June 12, 2018 
Main Terminal Low Voltage
System Upgrade 
C800061 

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Main Terminal Low Voltage
System Upgrade 
What is the Main Terminal?    Concourse B    Concourse C 
What is Low Voltage? 
What is being Upgraded? 
Concourse A                          Concourse D 

MTLV System Upgrade 
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High Voltage Distribution System 


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Low Voltage Distribution System
Power Centers 


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STIA Main Terminal 


The Main Terminal and Work Area 
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Passenger Experience Video 


Passenger Experience 
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Justification for Project 
Genuine risk to airport/airline operations 
Aged equipment, risk of failure/fire (water damage), extended
outages to repair 
Loss of power to ticket counters and kiosks, baggage claim,
communications, airline offices, elevators/escalators, HVAC. 
Existing system has limited capacity 
Negates new equipment/circuits or increased loads 
Unsafe working conditions  risk of injury or death 
Inability to meter/monitor power usage 
Risks of Delay 
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Typical Main Terminal Electrical Room 
28" FROM PANEL TO
RAILING 
MECHANICAL
VALVES IN
WORKING SPACE 

DANGER! ASBESTOS! 

Safety issues in typical old Main Terminal electrical space. 
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Typical Main Terminal Electrical Room 


Safety issues in typical old Main Terminal electrical space with worker. 
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Another Electrical Room 
6" CLEARANCE                 23" CLEARANCE 




18" CLEARANCE 
Working space does not comply with National Electrical Code. 
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Typical Power Panels in Main Terminal 
Manufacturer no longer in business. 
All breakers in use. 
Replacement circuit breakers not available. 
Unsafe condition. 




Obsolete electrical panels. 
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Recent Power
Outage in the News 
Aging equipment was scheduled
for replacement. 
"Equipment failed before we
could get to it." 

Failure of Aging Electrical Equipment Results in Power Outage 
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Project Work 


Electrical Rooms 
Electrical Panels 
Conduit Runs 
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Overview Budget 
Est. Final Construction Costs: $70,546,000 
Est. Design Costs: $29,754,000 
Est. Program Total: $100,300,000 

Estimated Program Total: $100,300,000 
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Scope Item Costs 
Scope Item           2014 Estimate         2018 Estimate 
Normal Power        $20 Million           $61 Million 
Emergency Power     $0                  $5 Million 
Central Power        $0                    $14 Million 
Center 
Branch Metering      $0                    $7 Million 
Regulated Materials    $0                     $13 Million 
Abatement 
Scope item cost by line item. 
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Overview Schedule 
Commission Authorization for Design: Q3 2018 
Design Team and GCCM Begin: Q1 2019 
Design Complete: Q4 2021 
Commission Authorization for Construction: Q3 2021 
Construction Start: Q4 2021 
Construction Complete: Q1 2025 

Construction Complete 2024 
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Questions? 

17