F

SCOPE OF WORK

26-0134 Design Build Contract for HVAC Replacement at 501 W. Sanford Street

1. Intent

The City of Arlington (“City”) is seeking statements of qualifications and interest from qualified firms to provide Design-Build services needed for HVAC and Controls Replacement located at 501 W.

Sanford Street, Arlington, Texas.

This solicitation is being offered under the provisions of the Texas Local Government Code, Chapter 2269, Subchapter G. Building Using Design-Build Method and all provisions of which must be complied with by both the City and the selected vendor.

Per statute, a firm submitting to this solicitation must be a sole proprietorship, partnership, corporation, or other legal entity or team that includes an architect or engineer and a construction contractor.

2. Scope of Work

Upgrade and modernize the HVAC systems at the Human Services Center located at 501 W.

Sanford Street to improve energy efficiency, occupant comfort, and system reliability. This includes replacing aging equipment, updating controls, and ensuring compliance with current building codes and sustainability goals.

The building is a 2-story building with a total square footage of 20,327 square feet. This building is occupied, and the design and construction will need to take that into consideration. Following is a list describing the tenant spaces.

• Suite 10: Office (1,928, SF)

• Suite 11: Dental Clinic (3,448 SF)

• Suite 12: Office (861 SF)

• Suite 20: Office (11,431 SF)

• Common Areas (Meeting Rooms/Restrooms/Hallways/Closets): 2,659 SF

The existing HVAC System includes the following:

• 3 condensing units (50-ton, 40-ton, and 15-ton) mounted within an enclosure in north side of the parking lot

• 3 AHUs (in attic of 2nd Floor)

• 13 VAVs

• 20 FPBs

• Outdated proprietary Trane Building Automation System controls

The scope of services for the project will be in two phases. The first phase will be to develop drawings and specifications to document the details of the HVAC and Controls replacement. Phase two will be the construction phase to perform the replacement of the entire HVAC system. The completed design-build project is intended to provide a complete and functional new HVAC system at this facility.

Overall Objectives

• Replace outdated HVAC units with high-efficiency models o The following systems are acceptable to the City: Carrier, Trane, Daikin

• Integrate a modern Building Automation System (BAS) compatible to other facilities o The City uses Schneider Electric Building Automation and Controls System

• Improve indoor air quality and thermal comfort

• Reduce energy consumption and maintenance costs

Site Assessment & Engineering

• Conduct a full HVAC system audit

• Load calculations and airflow analysis

Equipment Replacement

• Remove and dispose of existing units, air handlers, and condensing units

• Install new high-efficiency HVAC units

• Upgrade ductwork and insulation where necessary

Controls & Automation

• Install a digital Building Automation System (BAS)

• Integrate temperature, humidity, and occupancy sensors

• Provide remote monitoring capabilities

Electrical & Structural Work

• Upgrade electrical panels and wiring to support new equipment

• Reinforce rooftop or mechanical room structures if required

Testing & Commissioning

• Perform system balancing and commissioning

• Verify performance against design specs

• Provide training for facility staff if needed

Documentation & Closeout

• As-built drawings

• Equipment manuals and warranties

• Maintenance schedule and training materials

The scope of services includes all aspects of design and construction, including but not limited to the following:

3. Design/Pre-Construction Services:

1. Meet with City Staff to gain a detailed understanding of the project requirements and general parameters under which the project will be designed and constructed.

2. Based on discussions in the initial meeting(s), develop schematic designs, design development documents for constructability and cost.

3. Prepare project budget and cash flow projections.

4. Develop project schedule.

5. Coordinate with Asset Management Department for site submittal and building permit application.

6. Prepare final construction documents for building permit and construction.

4. Construction Services:

1. Complete construction.

2. Funding for this project is provided by a Community Development Block Grant.

Compliance with Davis Bacon laws is required.

3. Administer weekly progress meetings and prepare and distribute minutes of the meetings.

4. Prepare and submit shop drawings and list of materials for Owner approval prior to installation.

5. Prepare and submit pay applications on a monthly basis.

6. Submit for required City permits.

7. Schedule any inspections as required by City ordinances.

8. Arrange for required City code inspections.

9. Compile, review and submit project closeout documentation, including as-built drawings.

5. Proposed Project Schedule

Contract: March 2026

Design: April 2026

Construction Start: May 2026

Construction Completion: June 2026

6. Project Budget

$900,000 is the overall project budget, including Owner and contractor contingency.