RFI LD7 Rock Weir.docx

REQUEST FOR INFORMATION

Agency: U.S. Army Corps of Engineers (USACE) Project Location: Lock & Dam 7, near La Crescent, MN Project Title: Lock & Dam 7 Outdraft Weir Modification Notice ID: W912ES25RFI0001

This is a Request for Information (RFI) notice and should not be construed as a solicitation announcement. The submission of this information is for planning purposes only. USACE is conducting market research and desires input from industry to assist in requirements planning. The information requested by this synopsis will be used within USACE to facilitate the decision-making process and will not be disclosed outside the agency. Any information provided by industry is not to be construed as a commitment by the Government to procure any services and USACE St. Paul District does not intend to award a contract on the basis of this request for information.

Description of Work: USACE St. Paul District is current seeking input from industry that can provide services to modify an existing weir and construct a new rock weir structure at Lock & Dam 7 in accordance with the drawings and specification included. The project consists of modifying the existing weir, constructing new rock weir structures, and incidental related work. Principle features of work include dredging, excavation, rock placement, granular fill, and notching of an existing weir.

The project is currently drafted in phases with a goal to accomplish the full project within the 2025 construction season prior to the end of navigation season. The Government’s intent is to verify if phasing is a requirement and what alternatives are available if the entire project cannot be completed within the 2025 construction season; i.e.: completing the project the following year.

All documents included in this RFI are in draft form and may be altered. All firms responding to this notice are advised that their response is not a request to be considered for a contract award. If a solicitation is issued, it will be posted at a later date and all interested parties must respond to that solicitation separately from this announcement. As a reminder, all interested firms must be registered in the System for Award Management (SAM) (www.sam.gov) and maintain an active registration for the duration of the contract to be eligible for award of Government contracts. A response to this request for information is not a request to be added to a prospective bidders list or to receive a copy of the solicitation.

Any information submitted by respondents to this notice is voluntary. This notice is not to be construed as a commitment by the Government, not will the Government reimburse any costs associated with the submission of information in response to this notice. Respondents will not be individually notified of the results.

Contractors providing responses must do so by completing the questionnaire and return via email to the points of contact below.

ASSUMPTIONS:

· The NAICS code for this acquisition is anticipated to be 237990 with a size standard currently at $45 million.

· Rock size is USACE R270 gradation (see specifications section 35 31 19.00 13)

· Notice to Proceed (NTP) is June 16, 2025

· End of navigation season 2025 is estimated December 9, 2025

· Start of navigation season 2026 is June 15, 2026

· End of navigation season 2026 is approximately December 5, 2026

· Estimated excavation required as part of Phase 1 is 1,400 Cubic Yards (CY). Typical dredging required to access Dakota Island is 1,000 CY – 2,000 CY

· Estimated quantities required to complete work for ALL PHASES:

· Excavation (mix of existing rock weir and granular; scour dependent

· 2025: 3,800 CY minimum, 5,800 CY maximum

· 2026: 1,600 CY minimum, 2,500 CY maximum

· Granular placement (assume potential scour hole at weir)

· 2026: 1,500 CY minimum, 11,700 CY maximum

The project is considering a construction phasing approach. The phasing language is found in Section 01 11 00, Summary of Work, 1.2.3 Phase of Work.

· Phase 1: Dog-leg (Western) weir, interim completion date September 5, 2025

· Commence work on rock placement between the upstream terminus and approximately STA. D7+40.46. Place in accordance with drawings up to elevation 631.45 feet.

· Phase 2: Notching of existing weir, interim completion date October 24, 2025

· Commence work on excavation and construction of notches between STA. D7+83.46 and the downstream terminus.

· Phase 3: Raising of the Dog-leg (Western) weir, interim completion date December 9, 2025 (end of navigation season 2025)

· Commence remaining work on rock placement to the full design dimensions. Place rock for the full horizontal extent of the weir in lifts. Each lift must be completed within the same construction season as when the work was initiated. Lifts will be no less then 30 inches thick and no more than 45 inches thick.

· Phase 4: Parallel (Eastern) Weir and Scout Protection, completion date of December 5 2026.

· Commence work on rock placement for the eastern weir and scour protection between the two weir structures.

Please email all questions and questionnaire responses to both:

Sharon Frank-Scheierl at sharon.m.frank-scheierl@usace.army.mil and Justin Rose at justin.h.rose@usace.army.mil

Contractor: ___________________________________________

CAGE code: ___________________________________________

QUESTIONNAIRE:

1. Could the entire project be completed (approximately 70,000 tons of rock) within the 2025 construction season?

2. If the entire project cannot be completed, could the dog-leg (Western) weir be completed (Phases 1 – 3) (approximately 35,000 tons of rock) within the 2025 construction season?

3. If the dog-leg (Western) weir cannot be completed, could Phase 1 and 2 of the dog-leg weir be completed (approximately 15,000 tons of rock)? And would it be possible to start Phase 3 with an additional 30 – 45 inches thick lift for the entire dog-leg (Western) weir up to elevation 633.95 – 635.2?

4. If approved, what restrictions and/or requirements, processes, procedures within the scope and specifications could be excluded to allow for construction of the entire project within the 2025 construction season?

5. Refer to the staging area in drawing G-102 indicating rock is not anticipated to be allowed on the paved surfaces. Verify if work limits and staging areas have sufficient space to perform the work. If not, how much additional space (in square feet) is required for your firm’s staging area (inclusive of trailer, parking, equipment, rock, etc.)?

6. Does your firm anticipate just-in-time rock delivery, having most of the rock delivered (and needing local storage space), having deliveries and some rock stored on-hand to allow for continuous production if a shipment is late, or some other method (please provide details)?

7. How does your firm anticipate transporting rock for placement? (i.e. via barge from an upstream location, via barge from a downstream location and locking through, via truck to the loading dock at Lock & Dam 7 then to a barge and locking through, etc.)