LBNF/DUNE-US Cryostat Temporary Ventilation

Amendment / Modification

This document is Amendment 03 to Solicitation RFP LBNF-372089-BF, issued on January 28, 2026. The proposal due date remains February 9, 2026.

This amendment provides answers to questions submitted by potential bidders regarding the "Long-Baseline Neutrino Facility/Deep Underground Neutrino Experiment Cryostat Temporary Ventilation" project.

Key clarifications include:

• Exhaust/supply ductwork is to be provided and installed by others.
• Permanent protections around the unit perimeter are not required.
• Load transit times for the Ross shaft envelope are variable based on load specifications.
• Personnel cages and standard pallet loads have estimated completion times of approximately 30 minutes, with other items potentially taking longer.
• Crew size may be limited but is not foreseen to be an issue; subcontractor headcount will be accounted for in the installation schedule.
• FAR 52.225-11 is not applicable to this award.
• Commissioning expectations are for the unit to be powered, controls operable, and ready for duct hookup and operation.
• Warranty details are in Section 6.4 of the General Terms and Conditions.
• Ductwork and condensate drains do not require insulation.
• Condensate will run to a drainage channel, with piping up to 20' from the unit.
• Subcontractor deliverables and milestones (60%, 90%, 100%) are defined in SOW Section 5.
• Start-up and owner training requirements are in SOW Section 4 and 013100 General Requirements.
• Project operations are 24x7, and access coordination is required.
• The unit will be anchored as required by code or manufacturer.
• Housekeeping pads are not required.
• Cybersecurity requirements are covered in T&C Section 12 and 010010 General Requirements; Pro-Core program is required for correspondence.
• Ductwork sway bracing and condensate pumps are not required unless specified by code or manufacturer.
• The unit should be BACnet compatible.
• The 8.5-ton heat load is accurate, and units meeting requirements and fitting the cage envelope are acceptable.
• Contractors only need to ensure BACnet capability, not provide a controls subcontractor for initial programming.
• Hot work underground requires specific permits and coordination.
• Lifting equipment is available for contractor use.
• Industrial water lines are available for interface with the air handler.
• A PE design stamp is not required for the air handling system.
• FFDG acknowledges that the June 26 completion date may be challenging and will consider adjusting award or performance dates based on realistic procurement timelines.

This amendment primarily addresses questions and provides clarifications, impacting the understanding of requirements related to ventilation, installation, operational parameters, and project timelines.

While the proposal due date remains the same, the clarifications provided may influence technical approaches, cost estimations, and scheduling for proposals. Bidders should review these answers carefully to ensure their proposals accurately reflect the project's requirements and constraints.

Amendment / Modification

This document is Amendment 02 to the solicitation RFP LBNF-372089-BF for the Long-Baseline Neutrino Facility/Deep Underground Neutrino Experiment Cryostat Temporary Ventilation.

This amendment includes mandatory pre-proposal meeting questions and answers. Key clarifications include:

• Equipment testing and shutdown procedures related to FFDG readiness.
• Requirements for PE stamps on engineering designs (not required).
• Confirmation that the contractor is required to provide the air handler.
• Clarification on whether the ESH person can also serve as the guide (depends on work area).
• SDSTA guide training is sufficient, and a record must be provided.
• Anchor points design recommendations are not required by the SOW.
• There is no specific CFM requirement for airflow.
• Piping is not needed.
• Troughs for water drains are already in place.

The date of amendment and date issued are both January 21, 2026. The proposal due date remains February 9, 2026.

Amendment / Modification

• This amendment (No. 01) adds the missing DOE-approved Davis-Bacon Wage Determination, SD 20250016, which was published on August 1, 2025.

• The Davis-Bacon Wage Determination is now included.

• No changes to proposal deadlines or submission requirements are indicated by this amendment.

Other / Unclassified

This document is a General Decision Number (GDN) for South Dakota, specifically for Lawrence County, related to building construction projects. It outlines prevailing wage rates and fringe benefits for various construction trades, effective for work performed in 2025. It also details requirements related to Executive Orders 14026 and 13658 concerning minimum wage rates for federal contractors, and Executive Order 13706 regarding paid sick leave.

This document is crucial for bidders as it specifies the minimum wage rates and fringe benefits that must be paid to laborers and mechanics employed on federal construction projects in the specified area. Understanding these requirements is essential for accurate cost estimation and compliance during proposal preparation and contract performance.

Solicitation / RFP / RFQ

This solicitation is a Request for Proposal (RFP) from Fermi Forward Discovery Group, LLC (FFDG) for the Long-Baseline Neutrino Facility (LBNF) Deep Underground Neutrino Experiment (DUNE-US) Cryostat Temporary Ventilation system. The project is located at the 4850 level, underground at the Sanford Underground Research Facility (SURF) in Lead, SD.

• Procurement, fabrication, assembly, testing, packaging, delivery, and installation of an air handling unit constructed of shipping splits.

• The system will feed conditioned air to the cryostat and circulate air using large feedthroughs in the roof of the cryostat.

• Ducting (flexible or fixed) connecting the air handling equipment to the cryostat input ports.

• Electrical connection in conduit to a designated power panel provided by FFDG.

• Contract Type: Firm-Fixed-Price Subcontract.

• Period of Performance: From award date (expected April 1, 2026) through June 26, 2026.

• Award Date: Expected April 1, 2026.

• Proposal Submission Deadline: February 9, 2026, by 9:00 AM Mountain Time.

• Proposals must be submitted electronically.

• Evaluation Criteria: Proposals will be evaluated based on meeting Mandatory Requirements, followed by Technical Evaluation criteria, and ultimately "best value" considering proposal, price, and other factors.

• Mandatory Pre-Proposal Conference: Attendance is mandatory via Zoom on January 15, 2026. Failure to attend will make the offeror ineligible for award.

• Not specified in this document.

• A mandatory Pre-Proposal Conference is scheduled for January 15, 2026. Attendance is required for award eligibility.

• An optional on-site tour is available; RSVP required by January 6, 2026.

• Proposals must be valid for 180 days from the proposal due date.

• FFDG reserves the right to reject any or all proposals, waive irregularities, or cancel the RFP.

• FFDG will not reimburse any firm for preparation costs.

Form / Attachment / Pricing Sheet

This document is Attachment D, a Sample Hazard Analysis form for the Deep Underground Neutrino Experiment. It is designed to be completed by personnel involved in specific job tasks to identify and mitigate potential hazards.

• Document Control ID: A unique identifier for the hazard analysis.
• Date / Revision #: To track the version and date of the analysis.
• Owner: The entity responsible for the hazard analysis.
• Title: The specific job or task being analyzed.
• WHERE (Location, Access Points): Specifies the work area.
• WHAT (Description of Work): Details the tasks involved.
• WHO: Sections for personnel to document:
  • PREPARED BY: Name, Signature, Affiliation, Date.
  • ESH Reviewed By: Acceptance or rejection of the analysis, with reasons if rejected.
  • AUTHORIZING SUPERVISOR: Acceptance or rejection of the analysis, with reasons if rejected.
• Emergency Contact #s: Provides crucial contact information for both underground and surface operations, including duty officers and specific equipment operators (e.g., Ross Hoist Op., Yates Hoist Op.).

While this is a sample form, it indicates that hazard analysis and safety protocols are a critical component of the work associated with this opportunity. Bidders may need to develop or adhere to similar hazard analysis procedures as part of their proposed work. The inclusion of specific emergency contact numbers highlights the operational environment and safety considerations relevant to the project.

Form / Attachment / Pricing Sheet

This document is a Small Business Subcontracting Plan template, likely intended for bidders to complete and submit as part of their proposal. It outlines the bidder's planned subcontracting goals with various categories of small businesses.

• Subcontracting Goals: The plan details target percentages and dollar amounts for subcontracting to Small Businesses, Veteran-Owned Small Businesses (VOSB), Service-Disabled Veteran-Owned Small Businesses (SDVOSB), HUBZone Small Businesses, Small Disadvantaged Businesses (SDB), and Women-Owned Small Businesses (WOSB).
• Performance Period: It includes columns for 'Base Year' and 'All Options' to specify goals over the contract's lifecycle.
• Totals: Summarizes total dollars and percentages for all small business types and large business subcontracting.
• Submission Fields: Includes spaces for 'Name,' 'Title,' 'Signature,' and 'Date' for submission and approval.

Bidders are required to complete and submit this plan to demonstrate their commitment to subcontracting with small businesses. The figures provided in this template (e.g., 0.010236244190236554% for Small Business) may represent minimum requirements or a baseline for evaluation. Bidders should carefully review these requirements and fill out the plan accurately to meet solicitation criteria.

Form / Attachment / Pricing Sheet

This document is a "Fully Burdened Hourly Rate Price Sheet" (J-10) provided as an Excel file. It requires offerors to list their proposed hourly burdened rates and overtime rates for various labor categories, as well as any other direct costs that could be utilized for subcontract change order work.

• Labor Categories: Includes Electrician, HVAC Technician, and Laborer. Offerors must provide hourly burdened rates and hourly burdened overtime rates for each.
• Burdened Rate Definition: Burdened rates must include all additional costs such as overhead, profit, fringe, and General & Administrative (G&A) expenses.
• Other Direct Costs: Offerors must list any other direct costs, their descriptions, and the unit of measure, including rates for potential subcontract change order work.

This pricing sheet is critical for bidders to understand the cost structure expected by the government for labor and other direct costs. Offerors must complete this sheet accurately to propose their pricing for the opportunity, ensuring all applicable costs are included in the burdened rates. It directly impacts proposal preparation and evaluation.