Attachment 10 - Addendum-01_Phase 2B_Spec_01 00 11_General-Paragraphs.pdf

Design New HVAC System and Associated Upgrades B001 & B001A 5923EPHASE2B

SECTION 01 00 11

GENERAL PARAGRAPHS

06/20

PART 1 GENERAL

1.1 DESCRIPTION OF WORK

1.1.1 Work To Be Done

The work to be done consists of furnishing all labor, materials, and equipment and performing all work in strict accordance with these specifications for Phase 1B New HVAC System and Associated Upgrades B001 and B001A, Dale Bumpers National rice Research Center (DBNRRC), Stuttgart, AR.

1.1.2 Location

The site of work is at the USDA DBNRRC, 2890 Highway 130E, Stuttgart, AR 72160.

1.1.3 Principal Features of Work

Work consists of replacing the air distribution system for existing rooms served by existing air handling unit AHU-5. Air distribution systems (including exhaust systems) that are currently served supply air from AHU-5 shall be modified and reconfigured. Existing ductwork, exhaust fans, air terminals devices, diffusers/grilles, fume hoods and HVAC system controls shall be removed and replaced as indicated. Modify and reroute existing heating hot water system piping as indicated. Remove and replace insulation on existing heating hot water and chilled water piping in the area of work. Remove existing Deionized piping in the area of work and replace with stainless steel piping. Remove and replace ceilings, ceiling support system, and lighting in the area of work. Remove and replace existing greenhouse evaporative cooling pads as indicated.

Phase 2B work also includes modifications within the Headhouse associated with the HVAC systems served by existing Air Handling Unit AHU-4. Work in the headhouse includes removal and replacement of heating hot water coils, air terminal units, associated piping, controls, and related appurtenances as indicated on the contract drawings. All new components shall be integrated with the existing building automation and control systems.

Work within the Headhouse and Greenhouses shall be performed prior to commencement of work within the main laboratory building areas associated with AHU-5. The intent is to complete the headhouse and greenhouse modifications necessary to support subsequent phases of work prior to beginning demolition and construction activities within the laboratory spaces.

Phase 2A construction is currently underway under a separate contract.

The Contractor shall coordinate all work activities with the Phase 2A Contractor and the Contracting Officer to avoid conflicts with ongoing construction and facility operations. The Contractor shall schedule work, coordinate shutdowns, and sequence construction activities as necessary to maintain safe and continuous operation of the facility during construction.

SECTION 01 00 11 Page 1 ADDENDUM #1

MARCH 5, 2026

1.2 SITE VISIT

A site visit and inspection tour will be held at DBNRRC, 2890 Highway 130E, Stuttgart, AR 72160. All potential bidders will be notified of the exact time and date and are strongly urged to attend the site visit.

Inspection may only be made at this time, unless prior written approval is obtained to inspect at another date and time. Contact:

U.S. Department of Agriculture, ARS, MSA Attn: Mr. Everett Wilson 3550 Main Street Houston, TX 77002

(720) 618-0703 everett.wilson@usda.gov

1.3 COORDINATION OF WORK

The DBNRRC shall be occupied during construction. Contractor shall provide temporary barriers, noise and dust control measures to separate the area of work from occupied areas of the building. The government can vacate the area of work for no more than 120 days. Contractor must complete all work within labs and offices within 120 days from the start of demolition. Contractor shall have all equipment and materials on site prior to start of work. Cover and protect all existing laboratory equipment from dust or damage.

1. Work space and space available for storing materials shall be subject to the approval of the Contracting Officer. Do not store materials and equipment in other than assigned areas.

2. Execute work so as to interfere as little as possible with normal functioning of the facility, including operations of utility services and any existing equipment, and with work being done by others.

3. Minimize interference of construction activities with the flow of traffic by keeping roads, walks and entrances to grounds, to parking areas and to occupied areas of buildings clear of construction materials, debris, construction equipment and vehicles except where noted on plans or in specifications. Provide unobstructed access to areas required to remain in operation.

4. The Contractor shall complete all work within 270 consecutive calendar days after Notice to Proceed. Within 21 calendar days after Contract Award, the Contractor shall provide the Government with a detailed schedule of dates on which the Contractor plans to accomplish the work. In addition, the Contractor shall notify the Contracting Officer 20 days in advance of starting work. A planned work schedule shall be submitted to the Contracting Officer for approval. The schedule shall include a detailed description of the methods and equipment to be used for each operation and the sequence of operations. This schedule shall be updated monthly and submitted to the Contracting Officer for approval.

5. The Contractor shall take all measures and provide all material necessary for protecting existing equipment, property, and ongoing operations in affected areas of construction against dust, noise and debris.

6. Power sources for the Contractor's operations will be available

SECTION 01 00 11 Page 2 ADDENDUM #1 and supplied by the Government to the Contractor as long as its use does not interfere with the operations of the Government's facilities. Water sources will be available and supplied by the Government to the Contractor as long as its use does not interfere with the operations of any building. The Contractor is responsible for extending utility sources to his work locations. Such extensions shall be removed after work is completed, to the satisfaction of the Contracting Officer.

7. All references in the specifications to the Contracting Officer and Contracting Officer's Representative shall constitute referrals initially to the Contracting Officer's Representative.

8. Contractor shall provide sanitary facilities for use by his employees and the employees of his subcontractors working on job site.

9. Coordinate with USDA Prior to shutdown of utilities: The contractor shall notify USDA personnel a minimum of three (3) weeks prior to taking any systems out of operation for new work including domestic hot water, laboratory hot water, heating hot water, electrical power, steam or clean steam or any other utilities required for research.

1.4 DRAWINGS

All dimensions shown of existing work and all dimensions required for work that is to be connected with existing work shall be verified by the Contractor by actual field measurements. Any work at variance with that specified or shown on the drawings, shall not be performed by the Contractor until the Contractor has received approval in writing from the Contracting Officer.

1.5 MATERIAL SAFETY DATA SHEETS (MSDS)

Material Safety Data Sheets must be submitted to the Contracting Officer prior to the commencement of any work with any substance that may be considered hazardous.

1.6 UTILITIES OR STRUCTURAL ITEMS CONFLICTING WITH PROPOSED CONSTRUCTION

In the event the Contractor finds an area where existing utilities or structural items conflict with proposed construction, the Contracting Officer shall be notified immediately. The Contractor shall then propose a method of solving the problem. Work shall not resume in the problem area until the Contractor has received written approval from the Contracting Officer. There shall be no additional cost to the Government.

1.7 ACCEPTANCE OF WORK

1. Final inspection will not be made until the contract work is completed. The Contractor shall notify in writing the Contracting Officer fifteen working days prior to the date on which the work will be ready for final inspection.

2 Final inspection and acceptance of the work shown by the drawings and specifications forming a part of this contract shall not be binding or conclusive on the Government if it shall be shown that (1) the Contractor has willfully or through collusion with persons or firms engaged in the performance of the contract supplied inferior

SECTION 01 00 11 Page 3 ADDENDUM #1 materials, equipment, or workmanship, or (2) the Contractor has otherwise departed from the terms of the contract.

PART 2 PRODUCTS

Not used.

PART 3 EXECUTION

Not used.

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SECTION 01 00 11 Page 4 ADDENDUM #1