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Southern California:

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New Mexico:

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Pima County Public Service Center

Pima County Public Service Center

Project Description:

The new facility is located in downtown Tucson and consolidates the county’s justice courts into one building. The courts were previously scattered around town between county-owned facilities and leased facilities. The city also moved the three elected officials — the county assessor, county recorder and county treasurer — into the facility.  Another unique design criteria is that the building requires nine elevators. There are ones for the public to use, judges to use, detainees to use, and service and staff to use.

Scope of Work:

TMCx Solutions, LLC was contracted by Pima County Facilities Management to provide LEED Fundamental and Enhanced commissioning. Systems commissioned were mechanical/HVAC, electrical, plumbing, lighting and smoke control building systems.

Project Snapshot

  • Owner: Pima County
  • Project Size: 350,000 sq. ft.
  • Construction Cost: $48M
  • GC: Sundt Construction
  • Year of Completion: 2015


  • HVAC
  • Central Plant (Chilled and Hot Water)
  • Lighting
  • Domestic Hot Water
  • Smoke Control

Challenges and Successes

  • Issue: The condenser water pumps were not programmed per sequence.

          Resolution: It was recommended to get parameters from the chiller manufacturer specific for the chiller model to determine minimum flows. Variable speeds were ultimately implemented based on a pressure setpoint.

  • Issue: Corrosive condensate was leaking at all boilers onto the concrete pads which would damage the pads overtime.

          Resolution: Connections were sealed and tightened to prevent leaks.