REPAIR_ROOFTOP_HVAC_UNITS_AT_BXTRA_-_DDPM170019_-_SoW.docx

REPAIR ROOFTOP HVAC UNITS AT BXTRA – B1765

NAVAL AIR STATION

FORT WORTH JOINT RESERVE BASE

May 2019

STATEMENT OF WORK: PROJECT # DDPM17-0019

REPAIR ROOFTOP HVAC UNITS AT BUILDING 1765

OVERVIEW:

Currently, building 1765 at NAS Fort Worth JRB Texas has Heating, Ventilating and Air Conditioning (HVAC) systems that are dilapidated, inoperable and beyond their lifecycle. Six existing rooftop units require repair by replacement.

SCOPE OF WORK

The Scope of Work (SOW) is stated in terms of general and specific conditions. Any work not specifically stated, but necessary to achieve the goals of the project and/or required by code shall be completed by the Contractor.

The Contractor shall furnish all labor, parts, materials, tools, equipment, transportation, personnel, supervision and other items and services necessary to replace six rooftop HVAC systems at building 1765 located on the Naval Air Station Fort Worth Joint Reserve Base to restore full HVAC functionality. Work includes integrating utility reconnections and curb integrity. Additionally, all work done shall be specified by this SOW and in coordination with the Contracting Officer (KO). The Government shall not exercise any supervision or control over the contract delivery providers performing herein.

The Contractor shall field verify unit models and serial numbers listed in Appendix A, which is for reference only. The Contractor shall notify the KO of any discrepancies before initiating work.

All R-22 refrigerant from demolished units must be captured by the Contractor and returned to the government, using Contractor purchased/provided recovery cylinders. The technician shall be an EPA Section 608 certified technician, and shall provide reporting data for each facility including make, model, serial number, and corresponding amount of refrigerant reclaimed from each unit. The recovery cylinders shall be marked with nonpermanent labels to include the same data.

Building 1765 – Demolition Phase (4 – 20-Ton Rooftop Package Units)

1. The Contractor shall capture all R-22 refrigerant, and provide to Government.

2. The Contractor shall disconnect, remove and properly dispose of the existing four 20-ton rooftop package units.

Building 1765 – Installation Phase (4 – 20-Ton Rooftop Package Units)

1. The Contractor shall purchase and install four (4) new R-410A 20-Ton rooftop package units matching the existing units. The systems shall be BACnet compatible.

2. The newly installed units shall match the current curb footprints or Contractor shall provide a curb adapter for the new units.

3. The Contractor shall provide all electrical connections and replace service disconnects and 110 GFI receptacles.

4. The Contractor shall provide all condensate connections.

5. The Contractor shall provide all natural gas connections.

6. The Contractor shall provide thermostat.

7. The Contractor shall provide duct mounted smoke detector and reintegrate with the facility fire alarm system.

8. The Contractor shall test the system after installation to ensure balance and system performance.

9. The Contractor shall program the unit to fully integrate into facility operations/controls.

10. The Contractor shall perform startup and test of newly installed unit to ensure all new and existing electrical and natural gas is safely connected to the desired equipment per code as well as ensure the equipment is in proper working condition before completion of project.

11. The Contractor shall prepare an acceptance test report documenting the results of the startup for the day testing was done. Results are to be submitted to the KO before project completion.

12. The Contractor shall evaluate the system for any other issues and provide a quote for deficiencies found.

Note: Prior to installation, the new AHUs and all related appurtenances and material selections shall be approved by the KO.

Building 1765 – Demolition Phase (1 – 10-Ton Rooftop Package Unit)

1. The Contractor shall capture all R-22 refrigerant, and provide to Government.

2. The Contractor shall disconnect, remove and properly dispose of the 10-ton rooftop package unit.

Building 1765 – Installation Phase (1 – 10-Ton Rooftop Package Unit)

1. The Contractor shall purchase and install one (1) new R-410A 10-Ton rooftop package unit matching the existing unit. The systems shall be BACnet compatible.

2. The newly installed unit shall match the current curb footprint or Contractor shall provide a curb adapter for the new unit.

3. The Contractor shall provide all electrical connections and replace service disconnects and 110 GFI receptacles.

4. The Contractor shall provide all condensate connections.

5. The Contractor shall provide all natural gas connections.

6. The Contractor shall provide thermostat.

7. The Contractor shall provide duct mounted smoke detector and reintegrate with the facility fire alarm system.

8. The Contractor shall test the system after installation to ensure balance and system performance.

9. The Contractor shall program the unit to fully integrate into facility operations/controls.

10. The Contractor shall perform startup and test of newly installed unit to ensure all new and existing electrical and natural gas is safely connected to the desired equipment per code as well as ensure the equipment is in proper working condition before completion of project.

11. The Contractor shall prepare an acceptance test report documenting the results of the startup for the day testing was done. Results are to be submitted to the KO before project completion.

12. The Contractor shall evaluate the system for any other issues and provide a quote for deficiencies found.

Note: Prior to installation, the new AHUs and all related appurtenances and material selections shall be approved by the KO.

Building 1765 – Demolition Phase (1 – 6-Ton Rooftop Package Unit)

1. The Contractor shall capture all R-22 refrigerant, and provide to Government.

2. The Contractor shall disconnect, remove and properly dispose of the 6-ton rooftop package unit.

Building 1765 – Installation Phase (1 – 6-Ton Rooftop Package Unit)

1. The Contractor shall purchase and install one (1) new R-410A 6-Ton rooftop package unit matching the existing unit. The systems shall be BACnet compatible.

2. The newly installed unit shall match the current curb footprint or Contractor shall provide a curb adapter for the new unit.

3. The Contractor shall provide all electrical connections and replace service disconnects and 110 GFI receptacles.

4. The Contractor shall provide all condensate connections.

5. The Contractor shall provide all natural gas connections.

6. The Contractor shall provide thermostat.

7. The Contractor shall provide duct mounted smoke detector and reintegrate with the facility fire alarm system.

8. The Contractor shall test the system after installation to ensure balance and system performance.

9. The Contractor shall program the unit to fully integrate into facility operations/controls.

10. The Contractor shall perform startup and test of newly installed unit to ensure all new and existing electrical and natural gas is safely connected to the desired equipment per code as well as ensure the equipment is in proper working condition before completion of project.

11. The Contractor shall prepare an acceptance test report documenting the results of the startup for the day testing was done. Results are to be submitted to the KO before project completion.

12. The Contractor shall evaluate the system for any other issues and provide a quote for deficiencies found.

Note: Prior to installation, the new AHUs and all related appurtenances and material selections shall be approved by the KO.

PART I - GENERAL

1.1. REFERENCE PUBLICATIONS:

US GOVERNMENT/US AIR FORCE PUBLICATIONS: US Government/US Air Force publications can be found via internet at http://www.e-publishing.af.mil/. Some suggested publications would include:

1.1.1. 29 CFR (PART 1910), Occupational Safety and Health Standards

1.1.2. 29 CFR (PART 1926), Safety and Health Regulations for Construction

1.1.3. 40 CFR (PART 82), Protection of Stratospheric Ozone

1.1.4. AFMAN 91-203, Air Force Occupational Safety, Fire, and Health Standards, 11 Dec 2018

1.2 NATIONAL INSTITUTE OF BUILDING SCIENCES (NIBS): The NIBS operates a website called the Whole Building Design Guide (WBDG) and it can be found via internet at http://www.wbdg.org/. Some suggested Unified Facilities Criteria’s (UFCs) would include:

1.2.1. UFC 3-410-01 Heating, Ventilating, and Air Conditioning (HVAC) Systems, Change 4, 1 Nov 2017

1.2.2. UFC 3-550-01 Exterior Electrical Power Distribution, Change 2, 13 Mar 2019

1.3 APPLICABLE CRITERIA AND STANDARDS:

1.3.1. ASHRAE 90.1 - IP (2016) Energy Standard for Buildings Except Low-Rise Residential Buildings

1.3.2. NFPA 70 (2017) National Electrical Code

1.3.3. NFPA 90A (2017) Standard for the Installation of Air-Conditioning and Ventilating Systems

1.3.4. IEEE C2 (2017) National Electrical Safety Code

PART II – PRODUCTS

2.1. MATERIALS:

2.1.1. The Contractor’s work shall conform to the contract specifications and the best practices of the trades involved in this type work. All materials used in the work shall be free of defects in workmanship or finish, and shall be installed in accordance with the manufacturer’s specifications.

2.1.2. Contractor Furnished Materials: The Contractor furnished materials shall include all associated equipment and appurtenances required for performing the work in accordance with the equipment manufacturer’s literature, including cylinders to turn recovered R-22 refrigerant to the installation.

PART III – EXECUTION

3.1. WORK REQUIREMENTS:

3.1.1. Scheduling and Coordination: Prior to work commencement, the Contractor shall ensure that he/she is complying with the approved schedule, that work commences in accordance with the issued Notice to Proceed, and that work is coordinated with the assigned KO. The Contractor shall further determine that all required notices have been given and permits obtained.

3.1.2. All work performed within airfield proximity shall be submitted for approval through Navy Public Works (NPW).

3.1.3 All use of cranes on the installation must be submitted through NPW for authorization and approval.

3.1.4. Scheduling and Sequence of Work: The work shall be performed in such a manner as to minimize interruption of the normal duty day of Government activity. Certain areas of the facility will be vacated as necessary in order for required work to be performed. Prior to commencement of work, the Contractor shall meet with the KO so that the planned sequence of work and/or schedule may be reviewed and approved.

3.1.5. Interruption of Utilities Services: Interruptions shall be kept to a minimum and may only occur at such times and duration as approved by the KO. All utility interruptions shall be reviewed and accepted by the KO before approval is provided. Currently, NAS FW JRB Public Works requires a fourteen (14) day prior notification for a Utilities (Water, Gas, and Minor Power) shutdown. Major Power Outages require a twenty-eight (28) day prior notification.

3.1.6. Material(s), equipment, tools, and personnel shall be scheduled on-site in a timely manner as to avoid work delays. Material shall be inspected to ensure they are in compliance with specifications and are free from defects and damage.

3.1.7. Measurements: The Contractor shall field verify all aspects of the project. The Government shall not be responsible for Contractor oversight.

3.1.8. Existing Work: The Contractor shall take all necessary precautions to protect surrounding areas and Government property from damage. The Government shall not be responsible for any damages caused by the Contractor. The Contractor shall be responsible for repairing or replacing any Government property that is damaged during the performance of work. Failure to do so shall result in the Government withholding contract funds in order to mitigate damage caused.

3.1.9. Facilities: The Contractor shall protect all utilities as well as electrical and mechanical services. Where removal of existing utilities and pavement is specified or indicated, provide approved barricades, temporary covering of exposed areas, and temporary services or connections for electrical and mechanical utilities.

3.1.10. Dust and Debris Control: The Contractor shall limit the spread of dust and debris to the surrounding buildings as well as avoid the creation of a nuisance or hazard in the surrounding area. Non-hazardous debris resulting from the work being performed shall be cleaned up daily.

3.2. PERFORMANCE:

3.2.1. Workmanship: The Contractor is responsible for quality control and shall establish and maintain an effective quality control system. The Government will hold the contractor responsible for the quality of workmanship on the job. Skilled personnel shall execute in a careful, neat, and proficient manner in accordance with accepted trade practices and prevailing industry standards. All work shall be executed in accordance with OSHA standards, and specifically 29 CFR 1910 and 29 CFR 1926.

All work shall comply with all current applicable Federal, State and local regulations/codes/laws, and with all other applicable laws and regulations governing development, design, and construction at the site, whereby the most stringent of the applicable regulations/codes/laws are applicable.

3.2.2. As used herein, “replace” means provide new materials to replace existing or missing materials.

3.2.3. Unforeseen Major Repairs: Should deteriorated materials of a major nature be uncovered in the course of the work, it shall be brought to the attention of the KO. Repairs shall be made as directed by the KO, in writing, and an adjustment will be made in contract price in accordance with the terms of the modifications.

3.2.4. Existing Work: The Contractor shall be responsible for repairing/replacing/restoring any area or items damaged as a result of the performance of this work. The Contractor will take all necessary precautions to protect surrounding areas and Government property from damage. The Government shall not be responsible for any damages caused by the contractor.

3.3. REQUIRED FINAL SUBMITTALS:

3.3.1. Per UFGS 01 78 00, Section 1.7.1, the Contractor shall “assemble approved information in a binder and turn over to the Government upon acceptance of the work.” The Government will also accept electronic versions of the warranty binder. Binder or CD label should include Building Number, Contract Number, and Contract Name. Binder or CD shall contain the following items:

3.3.1.1. Name of the item(s)

3.3.1.2. Model and serial numbers

3.3.1.3. Location where installed

3.3.1.4. Name and phone numbers of manufacturers or suppliers

3.3.1.5. Names, addresses, and telephone numbers of sources of spare parts

3.3.1.6. Warranties and terms of warranty. Include one-year overall warranty of construction, including the starting date of warranty of construction. Items which have extended warranties must be indicated with separate warranty expiration dates.

3.3.1.7. Cross-reference to warranty certificates as applicable

3.3.1.8. Starting point and duration of warranty period

3.3.1.9. Summary of maintenance procedures required to continue the warranty in force.

3.3.1.10. Cross-reference to specific pertinent Operation and Maintenance manuals.

3.3.1.11. Organization, names and phone numbers of persons to call for warranty service.

3.3.1.12. Typical response time and repair time expected for various warranted equipment.

3.3.1.13. All Operation & Maintenance manuals

3.3.1.14. All preventative maintenance plans

PART IV: OTHER REQUIREMENTS

4.1. SCHEDULE:

The Contractor shall provide a Construction Schedule for KO approval. Work will be accomplished during normal Base operating hours, approximately 0730-1630 hours, Monday-Friday. No work will be scheduled on weekends without prior written approval by the KO.

4.2. IDENTIFICATION OF EMPLOYEES:

The Contractor shall be responsible for furnishing to each employee, and for requiring each employee engaged on the Work to display, identification as approved and directed by the KO. Prescribed identification shall immediately be delivered to the KO upon release of any employee. All Contractor and Sub-Contractor personnel shall wear identifying markings on hard hats clearly identifying the Company for whom the employee works.

4.3. JOB SITE TOOLS AND EQUIPMENT:

All hand tools and equipment shall be maintained in good working order and properly stored when not in use. Construction attire shall be in accordance with applicable OSHA regulations.

4.4. SANITATION:

Government toilet facilities shall not be available to Contractor personnel. The Contractor shall provide portable toilets at the job site for Contractor personnel.

4.5. CLEANUP:

The Contractor is responsible for a thorough DAILY clean-up and removal of any debris (waste, materials, packaging material, and the like) created during the performance of his work. All construction waste shall be stored in appropriate size dumpsters, and covered in an effort to keep contents inside. Cleanup of the Work Site shall include the construction site and any other adjacent areas that have been affected. Any dirt or mud which is tracked on to any Base street, parking area, sidewalk, patio, or driveway shall be cleaned away daily. This clean-up procedure does not apply to the generated universal waste

4.6. OCCUPATIONAL SAFETY:

The Contractor shall be subject to No Notice Inspections under Occupational Safety and Health Act (OSHA) Program by Inspectors of the Department of Labor.

4.7. GENERATED REFUSE:

The Contractor shall take positive action to prevent work generated refuse from entering the sewer system. The Contractor shall use contractor provided approved waste containers. All refuse and waste material shall be hauled in trucks with tight fitting beds and covers to prevent spillage on roadways. The Construction Site shall be kept neat, orderly, and safe at all times.

4.8. RECYCLABLE MATERIAL:

All removed metals are to be recycled by the Contractor at the NAS Fort Worth JRB Recycling Center or at an off-base recycling center. The amount of recyclable material and solid waste from demolition operations shall be documented on a Waste Tracker Form and submitted to the KO at the Project Closeout.

4.9. CONTRACTOR FURNISHED MATERIALS:

Contractor Furnished Materials. The Contractor shall submit a detailed list of the manufacturer’s data for all Contractor Furnished Materials to the KO for approval. The KO may request Drawings and Descriptions indicating the quality and fitness for the intended application.

4.10. SCHEDULE OF SUBMITTALS:

The Contractor shall provide a Submittal Schedule for approval to the KO prior to material procurement.

4.11. SITE VISITATION:

Prior to submitting proposals, it is encouraged that prospective Contractors conduct a site visit in order to get an understanding as to the nature of the project site, details, character, and extent of work to be accomplished. The Contractor shall be responsible for the verification of all SOW details, measurements, drawing specification, dimensions and etc., prior to submission of their proposal, ordering of materials, and execution of work. Failure to attend a site visit shall not relieve the Contractor of his/her responsibility of being knowledgeable of those conditions that can only be readily observed by visiting the site.

Site visitation may be arranged by the KO.

4.12. TIME OF COMPLETION:

The Contractor shall have one hundred and twenty (120) calendar days to perform all work after signing the Notice to Proceed (NTP).

Appendix A

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