Statement of Work (3 September 2024).pdf

Statement of Work 136th Airlift Wing, Naval Air Station Joint Reserve Base, Fort Worth, TX 3 September 2024

Project Title: Buildings 4 and 6 Replace HVAC Project Number: KLZA242700

1. Background: The 136th Airlift Wing requires the repair of two separate HVAC systems at Hensley Air Guard

Station (AGS). The installation includes buildings 4 and 6 which support administrative and training functions, a variety of open and enclosed office spaces, and multi-use conference spaces. Each building has its own existing HVAC system. On building 6, the existing McQuay 35-ton model number: RCC060CYY, serial number: FB0U09040096401, air cooled direct expansion (DX) condensing unit is no longer fully operational.

On building 4, the existing Trane 3.5-ton model number: 4TTB3042A1000AA, serial number: 8335W2N4F, air cooled DX condensing unit is also no longer fully operational.

2. The contractor shall furnish all labor, parts, tools, plant, equipment, appliances, transportation and materials necessary. The contractor shall procure and install proper sized air-cooled DX units for the required conditioned air space. Install phase monitor on new DX units to ensure incoming transformer power is disconnected. All work shall be performed in accordance with this Statement of Work (SOW) and associated specifications and drawings. All work shall also be performed in accordance with international, federal, state, local building codes, and Unified Facilities Criteria (UFC). (See Section 12. References).

3. Objectives: It is the government’s intent for the contractor to provide a turnkey HVAC replacement solution by providing a 35-ton Carrier Gemini Select 09DP Air Cooled DX condensing unit or chill water equivalent for building 6, and a 3.5- ton DX condensing unit that will maintain environmental conditions by a Building Automation and Controls Network (BACnet) controller for building 4. To meet BACnet and Local Operating Network (LON) specs, installation will include a Tridium Jace with a Communication/Comfort Network (CCN) driver.

3.1. Contractor is highly encouraged to conduct a site visit prior to submitting a proposal for the work to better understand the requirements, site conditions, and work environment.

3.2. All government provided drawings or As-builts are for reference only. Contractor shall field verify all existing conditions and dimensions.

3.3. Contractor shall observe all applicable Occupational Safety and Health Administration (OSHA) and State safety precautions pertaining to the contract.

4. Tasks: The contractor shall perform the following, but not limited to:

4.1. Building 6: Remove existing unit and interior coils and replace with 35-ton Carrier Gemini Select 09DP DX condensing unit or equivalent, must include but not limited to, the following:

4.1.1. Direct expansion condensing units

4.1.2. Must be compatible with 480VAC

4.1.3. BACnet and LON translator control

4.1.4. Crank case heater on all compressors

4.1.5. Condenser vibration isolation pads

4.1.6. High short circuit current rating interrupt

4.1.7. Motormaster V low ambient control

4.1.8. Security grilles/hail guards

4.1.9. Ships with bottom skid, top crate, and bag

4.1.10. Interior coils to allow for refrigerant compatibility

4.2. Building 4: Remove existing unit and replace with 3.5-ton DX condensing unit, must include but not limited to the following:

4.2.1. Direct expansion condensing units

Statement of Work: KLZA242700 Buildings 4 and 6 Replace HVAC

4.2.2. Must be compatible with 208/230VAC

4.2.3. BACnet and LON translator control

4.2.4. Crank case heater on all compressors

4.2.5. Condenser vibration isolation pads

4.2.6. High short circuit current rating interrupt

4.2.7. Motormaster V low ambient control

4.2.8. Security grilles/hail guards

4.2.9. Ships with bottom skid, top crate, and bag

4.2.10. Condensing furnace and cooling coil with new thermal expansion valves (TXV)

4.3. Reclaim refrigerant from existing units to be removed per approved EPA guidelines. Refrigerant will be left on site for TXANG to properly dispose of.

4.4. Remove existing units and other debris caused from construction. All materials to be reviewed prior to disposal. TXANG reserves right to repurpose parts/components of removed units to be used on other existing systems elsewhere.

4.5. Contractor to furnish all required crane, rigging, transportation, hoisting, and securing for all equipment required for this project.

4.6. Rework existing new DX unit pads to allow for new equipment installation where applicable. All modifications must be made to match existing means and methods.

4.7. Provide labor and materials to install new DX units and new refrigerant piping in place of existing units being removed.

4.8. Connect to new refrigerant relief piping and valves.

4.9. Furnish and install electrical as required to connect to the DX units. All electrical and instrumentation wiring shall comply with manufacturer’s requirements. Disconnect and reconnect electrical to include the following;

4.9.1. Lockout/Tag out the existing DX units disconnect in building

4.9.2. Disconnect conduit and wiring feeding the existing DX units

4.9.3. Provide and install new fusible disconnects

4.9.4. Provide and install wiring and conduit from new disconnects to new DX unit’s panel

4.9.5. Check voltages and fan rotation

4.9.6. Label disconnects

4.10. Connect new refrigerant piping and replace all refrigerant dryers throughout the system. Contractor will install suction line dryers on both circuits.

4.10.1. Two weeks after installation, contractor will remove suction line dryers and replace all liquid line dryers.

4.11. Contractor will perform bleed down test utilizing vacuum pump for 24 hours on both circuits prior to connecting new DX units to existing refrigerant lines.

4.12. Furnish and install new insulation on existing and newly installed pipe, valves, and fittings.

4.13. Perform factory start up inspection on new DX units, verifying proper operation.

4.14. Set expansion valves for each circuit.

4.15. Log machine pressures, temperatures, flow, amperage and voltage.

4.16. Install proper Tridium Jace controls system. Ensure proper connection to building automation system.

4.17. Test and balance system for optimal operation.

4.18. Provide four (4) hours of owner operational training.

4.19. Provide one (1) year construction installation warranty on entire project.

4.20. Provide five (5) year warranty on all parts and equipment for project.

4.21. Coordinate inspections as required by the contracting officer’s representative (COR). The completion of a government inspection does not relieve the contractor of its responsibility to comply with required project documents, code, or the need to provide quality materials and workmanship.

4.21.1. Clean job site daily. Site shall be cleaned and restored to initial cleanliness prior to final acceptance.

4.21.2. Request a pre-final inspection from the government for the purpose of identifying and resolving common project deficiencies. Request a final acceptance inspection from the government for the purpose of identifying and resolving minor less-common deficiencies prior to project closeout.

4.21.3. The contractor shall immediately notify the COR upon discovery of any unforeseen site conditions or discrepancies between the government’s project documents and manufacturer’s guidance.

5. Delivery: The contractor shall perform the following:

5.1. Provide proof of insurance.

5.2. Provide bonding or alternative forms of bonding in accordance with FAR 28.102 (contracts exceeding

30k).

5.3. Provide a progress schedule and bi-weekly progress reports on a government approved format after the issuance of a notice to proceed (NTP) for all projects exceeding ninety days, or otherwise indicated by the contracting officer.

5.4. Provide submittals in advance to the government prior to purchase. The COR or CO will review and approve all submittals prior to purchase.

5.5. Provide a release of claims after completion of project.

5.6. Provide a letter of guarantee after completion of project.

5.7. Minimum one (1) year on all workmanship and standard manufacturer’s warranty on products.

6. Government Furnished Property: The government shall furnish access to electrical power and water.

7. Security: The government may prohibit installation access to anyone categorized as a security concern.

These concerns may include but are not limited to: record of criminal conduct (active arrest warrant), felony conviction, illegal drug involvement, personal conduct, registration on any sexual offender registry, record of convictions/charges stemming from disrespect for law, and non-us citizen without proper documentation.

Contractor shall submit requests to government contact a minimum of two business days prior to required base access.

8. Cultural Resources: The contractor shall halt any ground disturbance activity in the event that any Native

American or other historical artifacts, fossils, human remains, unmarked graves, or burial sites are found.

Report any possible observations to the Contracting Officer. The Contracting officer shall suspend performance at the site of work and notify the Base Civil Engineer and Environmental Office. Performance cannot resume until directed by the Contracting Office.

9. Disposal: All waste products and debris from facility washing and prep shall be collected for disposal; wash water shall be filtered free of debris before being allowed to leave the work site via the soil or a waterway.

Wastes related to facility surface coating shall also be collected, to include paint debris/materials, spent paints, solvents, empty containers, rags, brushes, rollers, clothing, filtering and barrier materials, etc. The surface prep debris and surface coating wastes shall be collected in appropriate closed containers, labeled:

“UNIVERSAL WASTE – PAINT AND PAINT-RELATED WASTES”, and coordinated for disposal by the government through the 136th Environmental Office. Other non-hazardous waste or debris shall be removed by the contractor from the base and disposed at an appropriately permitted facility.

10. Place of Performance: Contractor shall perform all work at Hensley Field AGS (Grand Prairie). Physical

Address: 222 Hensley Field Dr., Dallas, Tx 75211

11. Period of Performance: Contractor shall complete delivery and/or installation within 90 calendar days after receipt of contract award. The normal business hours for the Hensley Field are 6:30AM to 5:15PM, Tuesday through Friday.

12. Contractor shall adhere to all applicable regulations, standards, specifications, UFCs, and UFGSs. References of particular importance include:

12.1. UFC 3-410-01: Heating, Ventilating, and Air Conditioning Systems, 1/7/2013

12.2. UFC 3-410-02: Direct Digital Control for HVAC and Other Building Control Systems, 7/18/2018

12.3. ANG ETL 1-01-01, Air National Guard Design Policy, 1/1/2004.

12.4. NFPA 11, 16

12.5. ASHRAE 90.1, AHRI Certified

12.6. UL Listed to US safety standard

13. Government Points of Contact:

13.1. Base Contracting Officer: Lieutenant Donald Crabtree, 136th Mission Support Contracting, Office:

(817) 852-3307, E-mail: donald.crabtree.3@us.af.mil

13.2. Project Engineer: Captain Nate Norton, PE, 136th Civil Engineer Squadron, Office: (817) 852-3327, E-mail: nathaniel.norton@us.af.mil

13.3. Civil Engineer Operations Manager and HVAC Subject Matter Expert: MSgt David B. Jones, 136th Civil Engineer Squadron, Office: (817) 852-3345, E-mail: david.jones.233@us.af.mil

13.4. Project Manager: Mr. David Shamburger, 136th Civil Engineer Squadron, Office: (817) 852-3328, mail: david.shamburger.5@us.af.mil E-

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