HVAC Repair Phase 2B, 3A, 3B

Amendment / Modification

This amendment to solicitation 1232SA2600056, dated 02/03/2026, adds the following attachments to the solicitation package:

• Attachment 9: Addendum 01 Cover
• Attachment 10: Addendum-01 Phase 2B Spec 01 00 11 General-Paragraphs
• Attachment 11: Addendum-01_Phase 2B_Spec_22 00 00_Plumbing-General-Purpose
• Attachment 12: Addendum-01_Phase-2B_Drawings_Combined
• Attachment 13: Addendum-01_Phase-3A_Drawing_G002_Phasing-Plan
• Attachment 14: Addendum-01_Phase-3B_Drawing_G002_Phasing-Plan
• Attachment 15: Combined RFI Responses

New attachments have been added to the solicitation package.

The solicitation response date remains unchanged and is NOT extended.

Amendment / Modification

This document is Addendum #1, dated March 5, 2026, for the Design New HVAC System and Associated Upgrades B001 & B001A project.

• Section 01 00 11 - General Paragraphs

This addendum does not appear to modify proposal deadlines or submission requirements based on the provided text. It primarily provides clarifications and details related to the scope of work and project execution.

Questions & Answers / Clarifications

This document contains responses to Requests for Information (RFIs) related to the USDA HVAC Repair DBNRRC opportunity. It clarifies various aspects of the project, including requirements, phasing, and existing conditions.

• OSHA Requirements: A full-time OSHA 30 certified superintendent is not required, as long as the site supervisor is qualified. OSHA 10 certification is not required for all subcontractors.
• Warranty Call-Outs: Response time for warranty call-outs depends on the criticality of the equipment.
• Hazardous Materials: The building was constructed after asbestos was banned, and to the government's knowledge, there are no lead-based paints. An asbestos survey is not provided.
• Security & Background Checks: Contractors are responsible for employee sign-in; temporary badges and PINs will be issued. No background checks are required.
• Fire Alarm & Sprinklers: Existing fire alarm and sprinkler systems will need to be reinstalled if removed. As-builts for these systems are not available as they have been upgraded. The fire suppression system is currently not operable, but fire alarms and monitoring are active.
• Phasing: Project phases must be completed sequentially. All areas under construction will be unoccupied.
• Temporary Walls: Plastic sheeting is approved for temporary walls. These walls do not require a door with an emergency-egress handle or keyed entry.
• Ceiling Systems: Specific 24"x24" suspended acoustical ceiling systems are detailed in Specification Section 09 51 00. New suspended gypsum board ceilings are not required to be fire-rated.
• Electrical Panels: Clarification is provided on the locations of various electrical panels (HD1, HD1B, S2L1) for different phases.
• Site Visit Observations: Responses address questions regarding wall tracks, projectors, and speakers in Room 101 (Phase 3B), confirming removal and reinstallation are required.
• Materials: DI water pipe fittings must be welded, not press-fit.
• Building Access: Contractors will be issued access codes valid only during designated times.
• Seismic Requirements: Seismic bracing is not required; standard supports and hangers are sufficient.
• Restrooms & Office Space: Contractors must provide their own toilets and office space in trailers.
• Painting: Painting is not included, except for repainting areas damaged during construction.
• Security Cameras: Security cameras are to be removed and discarded as they are not operational.
• Building Management Systems: Phases 2B, 3A, and 3B will be extensions of the existing Alerton building management system and TSI lab controls.

These responses provide crucial details that may affect bidder understanding of project scope, material requirements, safety protocols, and scheduling. Bidders should review these clarifications carefully to ensure their proposals accurately reflect the project's needs.

Amendment / Modification

This addendum, dated March 5, 2026, provides modifications to the "Design New HVAC System and Associated Upgrades B001 & B001A" project, specifically for Phase 2B, Phase 3A, and Phase 3B.

Key changes include:

• Replacement of Specification Section 01 00 11 (General Paragraphs) for Phase 2B.

• Replacement of Specification Section 22 00 00 (Plumbing, General Purpose) for Phase 2B.

• Replacement of Drawing G-002 (Phasing Plan) for Phase 2B, Phase 3A, and Phase 3B.

• Addition of new drawings for Phase 2B, including:

  • A-103 Phase 2B Headhouse Reflected Ceiling Plan
  • MD104 Phase 2B Headhouse Mechanical Piping Demo. Plan
  • MP102 Phase 2B Headhouse Mechanical Piping Plan
  • M-603 Phase 2B Headhouse Mechanical Schedules

• Specifications: Sections 01 00 11 and 22 00 00 for Phase 2B.

• Drawings: G-002 for Phases 2B, 3A, and 3B; and new drawings A-103, MD104, MP102, and M-603 for Phase 2B.

Bidders should note these changes and ensure their proposals reflect the updated specifications and drawings. No specific impact on proposal deadlines or evaluation factors is mentioned in this addendum.

Form / Attachment / Pricing Sheet

This document, "Attachment 11 - Addendum-01_Phase 2B_Spec_22 00 00_Plumbing-General-Purpose.pdf", is a specification document detailing general plumbing requirements. It outlines references, submittals, standard products, installation requirements, testing procedures, and disinfection protocols for plumbing systems.

• References: Lists numerous industry standards and publications (ANSI, ASME, AWWA, ICC, MSS, NFPA) that form part of the specification.
• Submittals: Specifies required submittals such as shop drawings, product data (including recycled content and backflow prevention assemblies), fixture lists, and test reports.
• Standard Products: Defines requirements for specified materials and equipment to be standard products with a proven history of satisfactory performance.
• Installation: Covers general installation requirements, including piping in air plenums, water and drainage piping, cutting and repairing, joints (threaded, mechanical couplings), dissimilar pipe materials, and supports (hangers, inserts).
• Testing, Flushing, and Disinfection: Details the procedures for testing the plumbing system (including smoke tests and water supply tests), handling defective work, and disinfecting the entire system according to specified standards.
• Posted Instructions: Requires framed instructions for operation, maintenance, and safety to be posted.

This document is crucial for bidders as it defines the technical specifications and standards that must be met for the plumbing aspects of the project. It details material requirements, installation methods, testing protocols, and submission requirements, all of which will impact proposal preparation, cost estimation, and execution planning.

Form / Attachment / Pricing Sheet

This document contains detailed schedules for HVAC equipment, specifically duct-mounted heating coils and single-duct VAV terminal units for Phase 2B of the project at the Dale Bumpers National Rice Research Center. It provides technical specifications and data necessary for selecting and installing this equipment.

• Head House Duct Mounted Heating Coil Schedule: Lists coils by mark (e.g., HC-32 to HC-44), manufacturer, function (e.g., Air Reheat), airflow (CFM), capacity (MBH), and various temperature and pressure drop data.
• Single Duct VAV Terminal Schedule: Details VAV boxes by mark (e.g., VAV-4-1, VAV-4-2), manufacturer, box type, airflow ranges (min/max CFM), duct connection size, and reheat/heating coil data including capacity and temperatures.
• Notes: Includes critical information regarding control system integration, the need for field verification of existing conditions and dimensions, coordination with the contracting officer for heating water system operation, and requirements for mechanical cleaning of the HVAC system.

This document is crucial for bidders involved in the HVAC replacement project. It specifies the exact technical requirements for heating coils and VAV boxes, including performance data and connection details. Bidders must use this information to select and procure compliant equipment, ensure proper integration with existing systems, and account for all specified installation and testing requirements in their proposals.

Form / Attachment / Pricing Sheet

This document, "Attachment 13 - Addendum-01_Phase-3A_Drawing_G002_Phasing-Plan.pdf", is a drawing that details the phasing plan for Phase 3A of the project. It visually represents the sequence and areas of work for this specific phase.

• Phasing Legend: Defines different phases of the project (Phase 1A, 1B, 1C, 2A, 2B Sequence 1, 2B Sequence 2, 3A, 3B) and indicates which are part of the current contract and which are not.
• Phasing Plan Diagram: Illustrates the "Area of Work" for Phase 3A, showing specific zones within the building designated for this phase.
• General Notes: Provides critical information for contractors, including:
  • Requirements for maintaining building operations and occupant safety during construction.
  • Procedures for protecting furnishings, equipment, and building systems (e.g., fire alarms, sprinklers).
  • Instructions for coordinating work areas and staging with USDA personnel.
  • Clarification that work may extend beyond hatched areas into adjacent spaces (e.g., above ceilings) and requires restoration to existing conditions.
  • Mandates a specific order of construction phasing (2A, 2B Seq 1, 2B Seq 2, 3A, 3B) and requires written approval for deviations.
  • Details on handling light fixtures, including removal, protection, storage, and reinstallation.
  • Daily protection of fire alarm and sprinkler systems and restoration requirements.

This drawing is essential for bidders to understand the spatial and temporal scope of Phase 3A. It outlines the specific areas where work will occur, the required sequence of construction relative to other project phases, and critical operational and safety requirements that must be adhered to throughout the construction period. Bidders must consider these phasing details and general notes when developing their proposals and project execution plans.

Form / Attachment / Pricing Sheet

This document is a Phasing Plan drawing (G-002) for Phase 3B of the USDA Agricultural Research Service project at the Dale Bumpers National Rice Research Center in Stuttgart, Arkansas. It visually outlines the areas of work for different construction phases.

• Phasing Legend: Identifies different construction phases (Phase 1A, 1B, 1C, 2A, 2B Sequence 1, 2B Sequence 2, 3A, 3B) using distinct hatch patterns and colors (though colors are not visible in this black and white drawing).
• Phasing Plan Diagram: A floor plan illustrating the specific areas designated for Phase 3B work, indicated by hatching. It also shows areas not in contract and areas of work.
• General Notes: Provides critical information for contractors regarding:
  • Maintaining building occupancy and operational status during construction.
  • Protecting furnishings, equipment, and personnel.
  • Erecting barriers and signage for safety and wayfinding.
  • The requirement for a work plan detailing how the building will remain operational.
  • Field verification of dimensions and conditions.
  • Coordination of staging areas.
  • Clarification that "Area of Work" hatching defines primary renovation limits, but work may extend beyond these limits (e.g., above ceilings) and must be restored.
  • The mandatory sequence of construction phases (2A, 2B Seq 1, 2B Seq 2, 3A, 3B) and the prohibition of deviations without written approval.
  • Procedures for handling light fixtures, fire alarm devices, and sprinkler heads during construction, including protection, removal, reinstallation, and repair of any damage.

This drawing is crucial for bidders to understand the specific scope, sequence, and logistical requirements of Phase 3B. It details where work will occur, the order in which phases must be completed, and essential safety and operational considerations for working within an occupied facility. Bidders must consider these phasing details and general notes when developing their proposals and project execution plans.

Amendment / Modification

• The offer due date has been extended from March 5, 2026, to March 25, 2026.

• Item 9B (Dated) of the solicitation has been updated.

• The deadline for proposal submissions has been extended to March 25, 2026. This extension is intended to allow time for responses to RFI questions and subsequent proposal generation.

Forms / Attachments / Pricing Sheets

This document is an index of drawings for "DESIGN NEW HVAC SYSTEM AND ASSOCIATED UPGRADES - PHASE 3A" at the Dale Bumpers National Rice Research Center in Stuttgart, Arkansas. It serves as a table of contents for the various technical drawings included in the project.

• Sheet Index: Lists all drawing sheets by number, title, and page count.
• Drawing Titles: Includes sheets for Title, Phasing, Reflected Ceiling Plans (Demolition and New Work), Mechanical (General Notes, Legend, Demolition Plans for HVAC, Piping, and Roof, New Work Plans for HVAC, Piping, and Roof, Details, and Schedules), and Electrical (Legend, Demolition Plans for Roof and Lighting, New Work Plans for Power and Roof, Lighting Plan, Details, and Schedules).
• Vicinity Map: Shows the location of Stuttgart, Arkansas, within the state.

This index is crucial for bidders to understand the scope and organization of the design documents. It allows them to quickly locate specific information related to the HVAC and electrical systems, demolition, and new installations required for Phase 3A of the project. Bidders will use this to assess the complexity and requirements of the work.

Solicitation / RFP / RFQ

This document is a combined synopsis/solicitation (RFQ) for HVAC Repair Phases 2B, 3A, and 3B at the Dale Bumper National Rice Research Center (DBNRRC) in Stuttgart, AR. The government is procuring commercial items in accordance with FAR Part 12. This announcement is the only solicitation; no separate written solicitation will be issued.

• The project involves HVAC repair work at the DBNRRC.

• Specific details for Phases 2B, 3A, and 3B are provided in separate attachments.

• Applicable North American Industry Classification Standard (NAICS) code is 238220 - Plumbing, Heating, and Air-Conditioning Contractors.

• The anticipated award type is a firm-fixed-price contract.

• The period of performance is not explicitly stated but implies completion within a specified timeframe after award.

• Offers are due by March 5, 2026, at 10:00 AM Central Time.

• Submissions must be emailed to kelly.wright@usda.gov with the subject line "RFQ 1232SA26Q0056".

• The evaluation methodology will be Lowest Priced Technically Acceptable (LPTA).

• Offerors must submit a Transmittal Summary Letter, a fully completed SF 1442, and an SF 24 Bid Bond.

• A bid guarantee is required for offers of $35,000 or more, not less than 20% of the proposed price, not to exceed $3,000,000.

• Offers must hold prices firm for 90 calendar days from the offer due date.

• Questions are due by February 20th, at 10:00 AM Central Time.

• This acquisition is set-aside for Total Small Business concerns.

• Prospective offerors must be registered with the System for Award Management (SAM) with an active registration at the time of solicitation closing.

• The solicitation incorporates numerous FAR clauses by reference, covering various aspects such as construction wage rates, buy American provisions, payment terms, site conditions, and more.

• Technical data and supporting documentation are available via attachments, including specifications and drawings for each phase.

Form / Attachment / Pricing Sheet

This document contains specifications for Phase 2B of the "Design New HVAC System and Associated Upgrades" project at the Dale Bumpers National Rice Research Center (DBNRRC) in Stuttgart, Arkansas. It details the technical requirements for the HVAC system design and associated upgrades.

• Project Scope: Replacement and reconfiguration of air distribution systems, including exhaust systems, ductwork, exhaust fans, air terminals, diffusers/grilles, fume hoods, and HVAC system controls.
• Piping Modifications: Modification and rerouting of existing heating hot water system piping, and replacement of insulation on heating hot water and chilled water piping.
• Ceiling and Lighting: Removal and replacement of existing ceilings, ceiling support systems, and lighting in the work area.
• Greenhouse Upgrades: Removal and replacement of existing greenhouse evaporative cooling pads.
• Site Visit: A mandatory site visit and inspection tour is scheduled.
• Contract Information: Contract No. 12405B21D0003, Task Order No. 12405B23F0300.

This document is crucial for potential bidders as it outlines the specific technical requirements, scope of work, and location for the HVAC system upgrade project. It details the extent of demolition, replacement, and modification required, which will directly impact proposal preparation and cost estimation.

Form / Attachment / Pricing Sheet

This document, "Attachment 2 - Specifications - Phase 3A.pdf", contains the final submittal specifications for Phase 3A of the "DESIGN NEW HVAC SYSTEM AND ASSOCIATED UPGRADES" project at the USDA-ARS Dale Bumpers National Rice Research Center (DBNRRC) in Stuttgart, AR. It details the technical requirements for the design and implementation of a new HVAC system and associated upgrades.

• Project Scope: Design and installation of a new HVAC system and associated upgrades.
• Location: USDA-ARS Dale Bumpers National Rice Research Center, 2890 Highway 130E, Stuttgart, AR 72160.
• Contract Details: Contract No. 12405B21D0003, Task Order No. 12405B23F0300.
• Divisions Covered: Includes General Requirements (Division 01), Existing Conditions (Division 02), Finishes (Division 09), Heating, Ventilating, and Air Conditioning (HVAC) (Division 23), and Electrical (Division 26).
• Key HVAC Components: Common piping, testing, adjusting, and balancing, thermal insulation, instrumentation and control, air distribution, and air terminal units.

This document is crucial for potential bidders as it outlines the comprehensive technical specifications and requirements for the HVAC system design and upgrade project. It details the scope of work, specific system components, installation standards, and references to relevant codes and standards. Bidders must thoroughly review these specifications to accurately estimate costs, develop proposals, and ensure compliance with all technical requirements.

Form / Attachment / Pricing Sheet

This document contains the "Project Table of Contents" for the "Design New HVAC System and Associated Upgrades B001 & B001A" project. It outlines the various divisions and sections of the specifications.

• Division 01 - General Requirements: Covers warranty, general paragraphs, contractor quality control, submittal procedures, governmental safety requirements, project closeout, and temporary environmental controls.
• Division 02 - Existing Conditions: Details demolition and deconstruction.
• Division 09 - Finishes: Includes acoustical ceilings.
• Division 23 - Heating, Ventilating, and Air Conditioning (HVAC): Encompasses common piping, testing, adjusting, balancing, thermal insulation, instrumentation and control, HVAC air distribution, and air terminal units.
• Division 26 - Electrical: Covers interior distribution systems, adjustable speed drives, and interior lighting.

This table of contents provides a structured overview of the technical specifications for the HVAC system design and associated upgrades. Bidders can use this to quickly identify the sections relevant to their scope of work, understand the organization of the technical requirements, and locate specific details regarding HVAC, electrical, and finishing components of the project.

Form / Attachment / Pricing Sheet

This document contains the "Index of Drawings" for the "DESIGN NEW HVAC SYSTEM AND ASSOCIATED UPGRADES PHASE 2B" project at the Dale Bumpers National Rice Research Center (DBNRRC) in Stuttgart, Arkansas. It serves as a table of contents for all the architectural and engineering drawings associated with this phase of the project.

• Lists all drawing sheets by number and title.
• Covers various disciplines including General (G), Mechanical (M), Plumbing (P), Electrical (E), and Architectural (A).
• Includes specific plans for demolition and new work across different phases and systems.
• References details, schedules, legends, and notes pertinent to the project.

This index is crucial for bidders to understand the scope and organization of the project's design documents. It allows them to quickly locate specific drawings related to HVAC, plumbing, and electrical systems, as well as demolition and new construction plans, which are essential for preparing accurate bids and understanding project requirements.

Form / Attachment / Pricing Sheet

This document contains detailed drawings and specifications for Phase 3B of the HVAC system design and associated upgrades at the Dale Bumpers National Rice Research Center (DBNRRC) in Stuttgart, Arkansas. It includes various plans, schedules, and details related to mechanical and electrical systems.

• Index of Drawings: Lists all included drawing sheets.
• Phasing Plan: Outlines the phased approach for the project.
• Demolition Plans: Details existing HVAC and lighting systems to be removed.
• New Work Plans: Illustrates the proposed new HVAC ductwork, piping, and electrical layouts.
• Mechanical and Electrical Details: Provides specific construction details for components and installations.
• Schedules: Includes detailed information on Single Duct VAV Terminal Units, Fire Dampers, and Grille, Register, and Diffuser specifications.
• Control Sequences: Outlines the operational sequences for VAV boxes and demand-controlled ventilation.
• Legends and Abbreviations: Defines symbols and terms used throughout the drawings.

These drawings are critical for understanding the scope of work for the HVAC system upgrades, including demolition and new installations. They provide the technical specifications and layout required for bidding on and executing the project. Bidders must review these documents to accurately estimate costs, plan their work, and ensure compliance with design requirements.

Form / Attachment / Pricing Sheet

This document is a Schedule of Pricing (Attachment 8) for the opportunity. Bidders are instructed to round the offer price for each CLIN to the nearest dollar amount, excluding cents.

• CLINs: 0001 (HVAC Repair Phase 2B), 0002 (HVAC Repair Phase 3A), 0003 (HVAC Repair Phase 3B).
• Unit of Issue: Dollars for all CLINs.
• Unit Price and Amount: Fields are present but show 0.0 for all CLINs in the provided text.
• Contract Total with All Options: Shows 0.0.

This attachment requires bidders to provide pricing information for specific CLINs. The instruction to round prices to the nearest dollar is a key formatting requirement for the submission. Bidders must ensure their pricing adheres to this rounding instruction.

Form / Attachment / Pricing Sheet

This document is a General Decision (AR20260018) issued by the Department of Labor, providing prevailing wage rates for various construction crafts in specific counties of Arkansas. It is intended to inform bidders about the minimum wage and fringe benefit rates required for laborers and mechanics employed on covered federal or federally assisted construction projects.

• General Decision Number: AR20260018
• Superseded Number: AR20250018
• State: Arkansas
• Construction Type: Building
• Counties Covered: Arkansas, Ashley, Bradley, Chicot, Desha, Phillips, and Prairie Counties.
• Publication Date: 01/02/2026
• Wage Rates: Lists specific hourly rates and fringe benefits for various trades including Electrician, Power Equipment Operator, Ironworker, Painter, Plumber, Sheet Metal Worker, Bricklayer, Carpenter, Cement Mason/Concrete Finisher, Laborer, and Welder.
• Executive Orders: Notes applicability of Executive Order (EO) 13706 (Paid Sick Leave) and EO 13658 (Minimum Wage for Federal Contractors).
• Appeals Process: Outlines the procedure for appealing wage determination decisions.

Bidders must use these prevailing wage rates to accurately calculate labor costs for their proposals. Failure to comply with these wage requirements can lead to contract violations. The document specifies the minimum hourly rates and fringe benefits that must be paid to workers on the project, ensuring fair labor standards.

Form / Attachment / Pricing Sheet

This document provides essential information regarding a mandatory site visit for solicitation 1232SA26Q0056. It also outlines the process for submitting questions related to the solicitation.

• Site Visit Date and Time: February 18, 2026, at 10:00 AM local time.
• Site Visit Location: SNARC/DBNRRC, 2955 Hwy 130 East, Almyra, AR 72003.
• Mandatory Attendance: Attendance at the site visit is required to submit an offer.
• Registration Process: To attend, email kelly.wright@usda.gov, raeann.braithwaite@usda.gov, and robert.ideker@usda.gov with the subject "1232SA26Q0056 Site Visit Registration." Include attendee names and company information. Registration is required for site visit access.
• Registration Deadline: February 16, 2026. Late registrations will not be accepted.
• Questions Submission: Submit questions via email to kelly.wright@usda.gov.
• Questions Deadline: February 20th, at 10:00 AM Central Time.
• Question Submission Format: Include the solicitation name and number in the email subject line.

This document is critical for potential bidders as it details the mandatory site visit, including how to register and the deadline. It also specifies the procedure and deadline for submitting questions, ensuring bidders have a clear path to obtain necessary clarifications before the solicitation period ends. Failure to register for the site visit will prevent attendance and potentially the ability to submit an offer.