NWWP92512100044 SOW CRP HVAC Replacement RFQ.pdf

Statement of Work

HVAC Replacement

Weather Forecast Office CRP Corpus Christi, TX.

December 17, 2020

Purchase Request #NW-WP9251-21-00044

Background:

The National Weather Service (NWS) Weather Forecast Office (WFO) Corpus Christi, TX (CRP) mechanical, electrical, and structural systems need replacement. The existing system are beyond their useful life due to age and are inefficient.

Objectives:

Replace HVAC split systems consisting of Air Condensing Units (ACU)- two (2ea) 15-ton for the Operations Area and one (1ea) 7.5-ton for the Administration Area. This includes Air Handling Units (AHU- 1, 2 & 3) and all associated equipment for the three split systems. NWS WFO is an active operation and HVAC disruption must be minimized to allow for sustained operations (The use of portable AC units may be needed). Replace outside air damper and section of duct associated with AHU-3. Replace screens on outside air louvers.

The government may award one or more tasks. A site visit is highly recommended. It is the responsibility of the contractor to inform themselves of all existing conditions and with all systems.

Full sets of as-builts available upon request.

Scope:

Task 1 - Replace HVAC Split System ACU/AHU #’s1 & 2 (Operations Area)

Replace both Split DX Refrigerant Systems – Air Cooled, Air Conditioning Units 15-ton. New units will be 15-ton Carrier Units or equivalent to. New units will have two stage compressors using a new line set accordance with the design to the air handler. Each compressor will be commanded stage 1 and stage 2. New Units will have matching ACU’s and matching AHU’s or equivalent. New units shall, use R410A refrigerant, include low ambient kits, and hail guards for the condensing units. Replace refrigerant set lines and components to match new condenser unit and air handler. Work includes all required services for delivery and installation of the new units, as well as removal and replacement of the existing HVAC Systems. New units will be Energy Star Certified. All units will have factory installed corrosion coatings. All exterior electrical piping shall be rigid galvanized piping to seal tight flexible conduit. Insulate all copper piping to industry standards. Contractor is required to include any electrical system changes, and integrate operations with existing DDC. Existing DDC is Siemens Talon controlled system using Siemens products on a Niagara AX Framework. Provide 4 hours of DDC training to NWS staff on new programming. Contractor shall work with NWS 3rd party commissioning and TAB agent. Contractor shall submit 90% drawings and phasing plan for review and replacement. Contractor shall minimize down time of HVAC. This is turn-key effort within the scope of this contract.

Task 2 - Replace HVAC Split System ACU/AHU #3 (Administrative Area)

Replace Split DX Refrigerant Systems – Air Cooled, Air Conditioning Unit 7.5-ton New units will be 7.5-ton Carrier Units or equivalent to. New units will have two stage compressors using a new line set accordance with the design to the air handler. Each compressor will be commanded stage 1 and stage 2. New Units will have matching ACU /AHU and will have intertwined Evaporator Coils. New units shall, use R410A refrigerant, include low ambient kits, and hail guards for the condensing units Replace refrigerant set lines and components to match new condenser unit and air handler. Air Handler shall have existing evaporator coil and expansion valves replaced with R410A compatible coils and valves. Work includes all required services for delivery and installation of the new unit, as well as removal and replacement of the existing HVAC Systems. New unit shall be Energy Star Certified. All units shall have factory installed corrosion coatings. All exterior electrical piping shall be rigid galvanized piping to sealtight flexible conduit. Insulate all copper piping to industry standards. Contractor is required to include any electrical system changes, and integrate operations with existing DDC.

Existing DDC is Siemens Talon controlled system using Siemens products on a Niagara AX Framework. Contractor shall work with NWS 3rd party commissioning and TAB agent.

Contractor shall submit 90% drawings and phasing plan for review and replacement. Contractor shall minimize down time of HVAC. This is turn-key effort within the scope of this contract.

Task 3 – EDH Repairs

Reference pre-construction report page 3 for EDH repairs.

Task 4 – HVAC Air Dampers Repairs

Replace AHU-3 outside air damper, associated duct, tee sections and insulation. Retain actuator for re-installation. Install new duct and insulate matching existing. Test for proper operation.

(For reference only see attached drawing detail 1)

Remove and replace existing exterior louver screens and frames. Material shall be suited for coastal environments. (For reference only see attached drawing detail 2 & 3) Dampers for AHU-1 and AHU-2 outside are working in reverse. Correct damper operations.

Replace building relief dampers. The new dampers should be replaced and set at 0.01” WC for building pressure.

Integrate damper functions into DDC to accurately reflect damper position and operations.

Point of Contacts:

Primary:

TO BE PROVIDED AT TIME OF AWARD

Secondary:

Security:

The contractor(s) will be required to sign in each morning at the front reception area and sign out each evening.

*** The C & A requirements of clause 73 does apply and a Security Accreditation Package is required. ***

Place of Performance:

National Weather Service Forecast Office 426 Pinson Drive Corpus Christi, TX 78406

Period of Performance:

Provide a fully functional and operational system 120 days from contract award date.

Project Warranty:

Contractor shall provide a written warranty for the installed system for a period of (1) one for year parts and (1) one year for labor from the date of acceptance.

STANDARD CLAUSES

A. Compliance.

The Contractor shall comply with all local, state, and Federal environmental, health, and safety regulations while conducting this work. In addition, the Contractor shall ensure that all work complies the applicable, current codes and be responsible for all licenses, permits and fees required to complete this project. Typical codes are referenced here:

• Occupational Safety & Health Standards (OHSA) Safety Requirements

• Uniform Building Code (UBC)

• Uniform Facilities Criteria (UFC)

• American National Standards Institute (ANSI)

• American Society of Testing & Materials (ASTM)

• American Society of Heating, Refrigerating, and Air-conditioning Engineers (ASHRAE)

• Sheet Metal & Air Conditioning Contractor’s Association (SMANCA)

• Applicable local, states, and federal codes and standards

• Energy Star Certification Program

B. Disposal.

The Contractor will be required to properly remove and dispose of all waste material in an environmentally friendly manor.

C. Guidelines.

The Project shall follow the guidelines stated in the Statement of Work, site diagrams, blueprint, and any contractor provided quoted documents. All modifications must be submitted and approved by the Contracting Officer.

D. Hours of Operation.

Work shall be performed between 7:00am & 5:00pm Central time Monday thru Friday unless otherwise approved by the COR. Contractor agrees to observe all Federal Holidays, and any other day off work designated by Federal Statute, Executive Order, or Presidential Proclamation:

New Year’s Day, Labor Day, Columbus Day, Veteran's Day, Thanksgiving, Christmas, Memorial Day, Presidents Day, Independence Day & Martin Luther King Day.

E. Facility Access.

A Project sign in sheet shall be completed each day for all contractors, contractor employees and sub-contractors on site.

F. Government Contact.

The Contracting Officer Representative (COR) will serve as the Government’s point of contact for all submissions.

G. Documents.

The Government does not warrant that any documents provided as attachments to be free from discrepancies, ambiguities, errors, omissions, or changing conditions. It is the responsibility of the Contractor to confirm existing conditions and resolve discrepancies between documents.

H. Project Duration

Project shall be completed within 120 days of notice to proceed.

I. Service Contract Labor Standards

The Contractor shall comply with the current wages of the Service Contract Labor Standards

(SCLS).

SAFETY AND EMERGENCY PLAN:

A. The Contractor shall observe and institute all applicable OSHA safety requirements and procedures to prevent accidents and injuries to both Contractor and Government employees including 40 CFR 1926 Subpart M for fall protection requirements.

B. The Contractor shall designate one person as Safety Coordinator for purposes of communication between the Contractor and the National Weather Service COR Primary Contact Jorge Negrete at 830-401-2055.

C. The Contractor must take precautions necessary for the protection against injury of all persons engaged at the site. Applicable Department of Labor and Occupational Safety and Health Standards will be taken into consideration in the performance of this contract.

D. For health purposes:

NOAA is committed to taking appropriate safety precautions to support the health and well-being of our employees and affiliates in response to the COVID-19 pandemic and will continue to assess all measures necessary to mitigate risks to the spread of the disease consistent with guidance from the Centers for Disease Control and Prevention (CDC).

To help slow the spread of COVID-19, CDC recommends the use of face coverings in public settings where other social distancing measures are difficult to maintain. NOAA personnel are strongly encouraged to follow CDC and State guidelines on the use of face coverings.

All individuals inside NOAA occupied workplaces are required to wear face coverings until further notice and are encouraged to maintain social distancing guidelines. Face coverings should cover the nose and mouth, but do not need to be medical-grade masks. Face coverings can be cloth masks, scarves, and bandanas. Managers are responsible for determining social distancing practices in their individual offices.

Thank you for following this simple step. We appreciate your efforts to keep our workplaces and communities safe.

GOVERNMENT PROVIDED MATERIALS AND/OR SERVICES:

A. EXCLUSIONS:

Unless otherwise indicated elsewhere in this SOW, the Government will provide no data, materials, equipment and/or services to the Contractor. Any and all research required to fulfill the SOW described herein, shall be the responsibility of the Contractor. The Government retains the right to request the Contractor to acquire additional information on behalf of the Government.

https://www.cdc.gov/coronavirus/2019-ncov/prevent-getting-sick/diy-cloth-face-coverings.html

B. WARRANTY:

The Government does not warrant that any documents provided as attachments to be free from discrepancies, ambiguities, errors, omissions, or changing conditions. It is the responsibility of the Contractor to confirm existing conditions and resolve discrepancies between documents.

C. SUBMITTALS:

Shall be sent to:

***All submittals shall become the property of the U.S. Government***

END OF STATEMENT OF WORK