The South Terminal Expansion project included a 30,000 SF Combined Communications and Command
Center (C4) located in the basement of the terminal. The new C4 facility is comprised of co-located
communications, command, and control facilities that replaced several standalone facilities
previously located throughout the airport.
The C4 is contained within a concrete hardened area and is designed to survive and continue
operation after a seismic event, even if the rest of the airport is inoperable.
The C4 area has 100% redundancy of both the mechanical and electrical systems. A NFPA
Code 905 smoke control system with exhaust, pressurization, and purge modes is also provided.
Outside air is provided to the HVAC system through a seismically hardened air shaft.
Primary cooling is provided by chilled water from the central cooling plant. A separate,
dedicated standby chiller is located in the mechanical room with a cooling tower located in
a remote seismically hardened location.
A 1,000 kW standby generator dedicated to C4 is located in a remote generator
room, which is also seismically hardened. This generator provides 100% backup for all C4
electrical and mechanical needs in case the airport electrical utility power is down.
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