Renovation of a mixed-use development in Lead, South Dakota. Completed plans call for the renovation of a laboratory facility; and power facility.

REVISED Proposals Due by 2:00pm September 17, 2025. Ross 4850L Substation This Request for Proposal (RFP) is issued by the South Dakota Science and Technology Authority (SDSTA) for Construction Services for the installation and painting of CMU walls and steel doors, and installation of a ventilation fan and ductwork on the Ross 4850 Level. An individual firm will be selected for a fixed price contract based on the total of the quantities and unit costs listed on the project bid sheet, demonstrated competence, and qualifications for the required work Questions must be sent in writing by email to David Raad (draad@sanfordlab.org). Answers will be emailed to all prospective proposers and posted to the Sanfordlab.org website. Prospective proposers must coordinate with David Raad regarding attendance at the site visit in Lead, SD. Questions Due: September 5, 2025, 4:00 pm MST Questions & Answers Posted: September 9, 2025, 4:00 pm MST Pre-Registration for Site Visit by 4:00pm August 21, 2025 Power to the underground is distributed at 12,470-volts (12kV). 12kV is fed to an existing substation on the 4850L near the Ross shaft. Equipment at the existing substation needs to be replaced but the substation is too small to accommodate new equipment. A new substation will be built on the 4850 level. The purpose of this project is to enclose an existing space to create a substation room and to provide a ventilation system for that room. The electrical work for the new substation will be performed as a separate project. 3. EXISTING CONDITIONS: The Ross 4850L Station, Connecting Drifts, and Substation Area are the primary work areas for this project. The photos in Figure 1 are provided for information purposes only. The work area conditions will differ depending on other construction activities occurring simultaneously with the substation construction. The work area at the Ross 4850L is accessed through the Ross shaft. Parking and space surrounding the Ross shaft is limited by other construction activities happening on the surface and underground. The Offeror will be required to shuttle their workers to/from the Ross using the following arrangement: Offeror employees park their personal vehicles in the Yates administrative parking lot. Employees board a shuttle/personal vehicle (provided by the Offeror). Offeror parks shuttle in designated parking area and walks approximately 200 ft to the Ross shaft for transportation underground. The shuttle route and designated parking areas are shown on slide 1 of Exhibit 1. The Offeror will be required to leave the keys in the shuttle so it can be moved by SDSTA if needed. Design drawings and project specifications are attached to this RFP. The scope of work includes the following: Item A: Procure, and install two 2-hour fire rated walls: Construct CMU walls across each end of the substation. Walls must follow the non-uniform contour of the rib and back. Walls must be pinned to rib and back (refer to Design Drawing S-101.) West wall approximate dimensions: 26 feet long by 13 feet high. West wall must contain the following openings: o 10-foot-wide x 6-foot-high opening for fire/smoke dampers. o Opening for 6-0 x 7-0 walk-in double door. o Two 4-foot-wide x 6-inch-high fire-stopped openings for conduit penetrations. East wall approximate dimensions: 36 feet long by 19 feet high. b. The offeror's project package, including proposed project team that will actually be performing the work, and other technical requirements defined in this document. c. Specialized experience and technical competence in: Masonry and Concrete Work Door, Frame, and Hardware Installation Ventilation System Installation d. Construction safety practices, procedures, and safety record relating to the scope of work. e. Qualified professional personnel in the following key areas: 1) Project Management, 2) Project Supervision, 3) CMU Construction, 4) Door and Hardware Installation, 5) Ventilation System Installation. f. Past performance on SDSTA, US Department of Energy, State of South Dakota or other contracts with respect to cost control, quality of work, and compliance with performance schedules. All communications regarding this procurement between RFP release and award shall be directed by email to David Raad at draad@sanfordlab.org. Communications with other SDSTA staff regarding this procurement in advance of the award are not allowed. The total project duration shall be within 120 days of the Notice to Proceed (NTP). Note that liquidated damages of $75/day will be applied for additional schedule days after the approved contract completion date. Refer to section X of the draft contract for additional details 12478