3-01 - OVERVIEW - Jail S AHU rev 2026.03.11.pdf

1 – Overview – Construction Page 1 of 3 Form rev. 03/2024

1 – Project Overview for GC

Project Description Pursuant to Chapter 2269 Subchapter D of the Texas Government Code, Williamson County (County) is seeking written proposals from qualified contractors to provide Competitive Sealed Proposals for Jail South AHU Replacement. County intends to utilize the one-step selection process for this solicitation and award.

The County Jail South AHU Replacement Project consists of phased mechanical system upgrades within an actively occupied correctional facility. Continuous environmental control is critical; inmate-area temperatures must always be maintained between 65°F and 80°F throughout construction.

The Work includes, but is not limited to, the following:

Chilled Water System Modifications

• Installation of new chilled water (CHW) isolation valves at each floor branch of the main riser.

• Installation of a new central plant bypass valve on the Level 1 chilled water riser.

• Relocation of existing motorized isolation valves at both chillers.

• Installation of new energy valves at both chillers.

• Installation of calibrated balancing valves on Sublevel and Level 1 fan coil units (FCUs).

• Installation of new air bleeders and associated CHW system control accessories (to occur during system outage).

Air Handling Unit (AHU) Upgrades (Levels 1–3)

Replacement of internal components within eleven (11) existing AHUs while reusing existing cabinets and ductwork, including:

• Fan and motor assemblies

• Chilled water cooling coils

• Valve packages

• Filters

Outside Air System Improvements

• Installation of new outside air fan and duct heater assemblies on Levels 2 and 3.

• Installation of a new motorized control damper at the Level 1 outside air fan.

Testing and Balancing (TAB)

All chilled water system components—including pumps, chillers, AHUs, FCUs, and VAVs—shall undergo full testing, adjusting, and balancing. Pre-TAB activities will be required in designated areas prior to final system balancing.

1 – Overview – Construction Page 2 of 3

Phasing Requirements

Because inmate housing areas cannot be vacated and loss of conditioning is not permitted, carefully planned and coordinated phasing is mandatory.

Phase 1 – Outside Air System Work Installation of outside air fan and duct heater assemblies.

Phase 2 – CHW Isolation Valve Installation (Planned System Outage) Installation of chilled water isolation valves will eliminate cooling to affected branches and therefore shall occur during a coordinated full system shutdown. This work is recommended to occur concurrently over a weekend when outdoor temperatures are 55°F or lower. The system shall be fully drained during this outage. Installation of new air bleeders and CHW control accessories shall also occur during this shutdown period.

Phase 3 – AHU Internal Component Replacement:

Following restoration of the chilled water system, replacement of internal AHU components.

Phase 4 – FCU Balancing Valve Installation:

Installation of balancing valves at designated FCUs.

Phase 5 – Controls, Electrical, and Final Rebalancing:

Completion of associated controls and electrical work, followed by final mechanical system rebalancing.

Temporary HVAC Requirements

Temporary chilled water AHUs will be required on Levels 2 and 3 to maintain temperature compliance while existing units are offline. Temporary systems shall:

• Utilize existing chilled water connections

• Extend electrical circuits as required

• Connect to existing supply ductwork using flexible duct

New smoke detectors will be required. Daily coordination for fire alarm enabling/disabling shall be anticipated.

Contractor Responsibilities

The selected Contractor shall:

• Coordinate all project phasing with the Owner and facility operations staff

• Provide and maintain temporary HVAC systems necessary to maintain required temperature conditions

• Ensure uninterrupted environmental control in inmate-occupied areas

• Coordinate fire alarm and life-safety system modifications

All work shall be executed in a manner that maintains continuous facility operations and minimizes disruption to security and daily jail functions.

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The Successful Respondent (ultimately the awarded Contractor) must meet all requirements of this RFCSP, maintain proper licensing, and comply with all federal, state, and local laws and mandates relative to the services specified in this RFCSP.

Architect of Record County has contracted with Cleary Zimmermann Engineers, LLC. for Architectural/ Engineering services for this project.

Scope of Services The County’s South Jail AHU Replacement project consists of phased mechanical upgrades within an occupied correctional facility. Work is to be in accordance with the provided Plans, Specification, and drawings listed in the Scope attachment.

The Project includes all utilities, drainage, roadways, parking, landscaping and walkways to structures, and landscaping associated with structures.

Substantial Completion 680 days after Notice to Proceed (NTP)

Construction Budget $ 800,000.00

Mandatory Pre-Solicitation Conference*

Thursday, March 26, 2026 10:00am Williamson County Annex 100 Wilco Way, Suite 226, Georgetown TX 78626

Site walk following Pre-Solicitation Conference

South Jail 508 Rock St., Georgetown, TX 78626

**Note: Both Pre-Solicitation Conference and Site Walk must be attended.

1 – Project Overview for GC