Industry Day 1 - SAM Announcement - Arkabutla Dam Modification.pdf

W912EE25S0017 Industry Day - Arkabutla Dam Modification NAICS – 237990 – Other Heavy and Civil Engineering Construction.

W912EE - The USACE Vicksburg District is seeking input from industry through participation in an Industry Day event to be held virtually on September 15, 2025.

The district is seeking participation from qualified and capable contractors with the interest, capability and capacity to perform the scope-of-work indicated, capable of mobilizing immediately after the receipt of Notice-to-Proceed.

This project is in the very early design stages and the schedule for contract advertisement will be determined at a later date. The proposed project generally includes construction of a new outlet works at Arkabutla Dam and abandonment/closure of the existing outlet works once the new outlet is in operation. Additional information regarding the current scope of work is included below.

In accordance with Defense Acquisition Regulation (DFARS) 236.204(v), the estimated magnitude of construction is Over $500,000,000. This project has an estimated construction completion time of 6 to 7 years after the receipt of Notice to Proceed, including the time for prework submittals and material procurement. NAICS – 237990 – Other Heavy and Civil Engineering Construction, with a small business size standard of $45M.

VIRTUAL DAY PARTICIPATION INSTRUCTIONS:

An Industry Day for the Arkabutla Dam Modification Project at Arkabutla Lake Dam will be held on 15 September, 2025, 8:00 a.m. to 10:00 a.m., CST. The Industry Day will be held virtually, and the presentation and a list of attendees will be posted after the conclusion of the virtual industry day.

Contractors planning to attend the main presentation on September 15 are asked to complete the Pre-registration Form attached to this notice and return a copy to Lawren Boolos at lawren.boolos@usace.army.mil. Please submit the pre-registration form no later than September 8, 2025.

A list of participants and interested firms will be posted to this notice following the Industry Day.

To attend the meeting please see the attached Word document titled “INDUSTRY DAY TEAMS LINK” containing the live link.

Industry day will begin promptly at 8:00AM CST on September 15, 2025, for the main presentation. The Teams application will open for participants to log on at 7:30am CST.

The Government will also be conducting one-on-one sessions with prime contractors only, for the purpose of receiving industry responses to the attached list of technical questions to be used to improve the final Project Design, and Request for Proposals. Please note that these one-on-one meetings are not intended to be general capability briefings and are not opportunities for contractors to market their firms.

These one-on-one sessions will be held on the following days: September 16-17. Prime Contractors will be required to sign up for these individual sessions in advance by emailing Lawren Boolos at lawren.boolos@usace.army.mil. The availability for the sessions will be on a first come first serve basis.

Registration shall be done NLT September 8, 2025.

PROJECT SPECIFIC DETAILS:

The U.S. Army Corps of Engineers, Vicksburg District requests participation from qualified construction contractors capable of performing construction services for the following project.

Desoto County, Mississippi, Arkabutla Lake Dam Modification, Coldwater River, Arkabutla Lake.

Arkabutla Dam is a high hazard potential dam located in Desoto County, Mississippi with portions of the lake extending into Tate County, Mississippi. The dam is located on the Coldwater River, a tributary of the Tallahatchie River, and it stores floodwater to provide flood damage reduction in the Yazoo River Basin. The dam is located approximately 4.25 miles north of Arkabutla, Mississippi and approximately 35 miles south of Memphis, Tennessee. The project is authorized by the Flood Control Act of 1928, as amended by the Flood Control Acts of 1936 and 1938. The Flood Control Act of 1936 authorized a plan of improvement for control of headwater flooding in the Yazoo River Basin and the Flood Control Act of 1939 authorized construction of the project under the Flood Control Mississippi River and Tributaries appropriation. Construction of the project began in August 1940 and was completed in June 1943. The reservoir at Arkabutla was constructed as part of the Yazoo River Basin Headwater Project. The authorized project purposes include flood control and recreation.

The project consists of an embankment dam, abutment dikes, outlet works, spillway, and closure dikes.

The project features are founded on alluvial deposits composed of clay and sand. The total length of the dam including the abutment dikes is 10,700 feet. The maximum height above the valley floor is 85 feet.

The current outlet works consists of a three-gated reinforced concrete intake tower, single reinforced concrete conduit, reinforced concrete stilling basin, and outlet channel. A service bridge connects the intake tower with the crown of the main embankment and allows access from embankment to the intake structure operating floor. The spillway is an uncontrolled overflow type, in a natural saddle about 3,000 feet north of the dam. The spillway comprises a reinforced concrete approach apron, weir, chute, stilling basin, and riprap lined outlet channel. The two small closure dikes are located northwest of the spillway and have a total length of approximately 1,300 feet and a maximum height of 35 feet.

Based on the 2023 Existing Condition Risk Assessment, Arkabutla Dam is currently categorized as a Dam Safety Action Classification (DSAC) 1. The primary risk driving potential failure modes (PFMs) of Backward Erosion Piping (BEP) into the outlet works drainage (PFM 8) and into the conduit were identified (PFM 10). An unfiltered exit exists through the outlet drains into the stilling basin. To reduce risk of potential failure, the Government determine the outlet works shall be replaced by relocating it north of the existing outlet works and properly abandoning the existing outlet works.

Figure 1. Arkabutla Dam Project Location

The proposed modification plan includes construction of a new outlet works located at approximately station 175+00 along the dam and abandonment of the existing outlet works. In general, the work will include:

Construction of a zoned cofferdam approximately 70 feet high and 2,300 feet long. The cofferdam will be the damming surface during outlet works construction. The cofferdam will have 1:3 side slopes to protect and dewater the excavation area. The embankment would have a clay core with random fill outer shells. The width of the core at the base would be a minimum of 100 feet. The crown of the cofferdam would be at elevation 264.3 feet, NAVD88 which is top of dam. The downstream slope of the cofferdam would have a chimney drain five feet thick connecting to a 5 foot thick downstream horizontal filter. A 5 feet thick blanket drain beneath the upstream shell to expedite consolidation time of the embankment and impervious blanket.

Excavation of the existing dam embankment at Station 175+00 to a depth of 80 feet on 3:1 side slopes to construct the outlet works at an invert elevation of 190.0 feet. To dewater the project area, two sets of dewatering wells are needed: one for the upstream pervious blanket and another for the substratum sands. A total of eight (8) shallow dewatering wells (four (4) on the north side and four (4) on the south side of the excavation) are needed to dewater the upstream pervious blanket. To dewater the substratum sands, an additional nine (9) 12-inch diameter relief wells extending down to an elevation of 130 feet are needed. Therefore, to dewater the whole project area, a total of 17 wells are needed.

Construction of a new 717.5 feet long replacement outlet works with a 55 feet by 129.5 feet control tower, 355 feet long reinforced steel lined concrete conduit 18.5 feet in diameter, and a USACE Type 3 Stilling basin 233 feet by 46 feet. The outlet works will be founded on deep foundations to provide adequate bearing and stability.

The control house will have 11 feet wide by 20 feet10 inches tall vertical lift gates and an identical emergency gate; a 118 feet long bridge connecting the control house to the top of the dam.

The control tower includes installation of gate house mechanical equipment including gate hoists, a bridge crane, compressed air system, and HVAC system.

The new structure will also include excavation of a new discharge channel with riprap scour protection to direct water towards the existing discharge channel.

Reconstruction of the dam embankment from the excavation at Station 175+00 above the outlet works up to the dam crest elevation of 264.3 feet NAVD88

Abandonment of the existing outlet works in place. The existing 18 foot diameter conduit will be completely grouted full, a filter will be installed at monolith 13 in the conduit, a 5 foot thick filter will be installed in the bottom of the stilling basin, and the outlet channel will be backfilled. This work will not take place until the new outlets works has been placed in operation.

Figure 2. Aerial View of Proposed Plan

Figure 3. Site Plan and borrow site

Figure 4. Elevation – New Outlet Works with Existing Embankment and Tie-in to Toe Drain Filter

Figure 5. Isometric – Tri-furcated Intake Tower

MARKET RESEARCH INFORMATION REQUEST:

In addition to participation in the Industry Day Event, interested firms should submit a capabilities package, to include the following:

1. Firm's name, address, point of contact, phone number, and email address.

2. CAGE code and UEI.

3. Firm's interest in submitting a proposal in response to a solicitation, if issued.

4. Business classification: Small Business (SB), Small Disadvantaged Business (SDB), Woman Owned Small Business (WOSB), Service-Disabled Veteran Owned Small Business (SDVOSB), Historically Underutilized Business Zone Small Business (HUBZone), 8(a), or Other than Small Business (Large Business).

5. Firm's joint venture information (if applicable).

6. Bonding information (provide bonding limits on the bonding company's letterhead):

a. Single bond

b. Aggregate

c. Point of contact for the bonding company

7. If depending on sub-contractor capability the interested party shall submit a letter of commitment from the sub-contractor.

8. Interested parties who believe they can meet the requirements are invited to submit, in writing, complete information describing their interest and capability to meet all requirements stated above.

Include your firm’s capability to execute comparable work performed within the past 5 years. The provided information shall include the following:

a. Brief description of the project

b. Customer contact information

c. Outcome of the project

c. Timeliness of performance

e. Dollar value of the completed projects

At least three (3) projects should be provided to demonstrate competency and experience in the required areas of work. Narratives shall be no longer than ten pages.

LIST OF ATTACHMENTS:

VIRTURAL INDUSTRY DAY PRE-REGISTRATION FORM

INDUSTRY DAY QUESTIONS TO INDUSTRY

SUBMIT TO:

Market Research Responses shall be submitted via email to Lawren Boolos, Contract Specialist at Lawren.Boolos@usace.army.mil and copy furnish R. Ellis Screws, Contracting Officer, at Ellis.Screws@usace.army.mil.

Responses should be sent as soon as possible, but not later than 2:00 PM Central Time, September 8, 2025. Please use the following subject line for the email: “W912EE25S0017 Industry Day - Arkabutla Dam Modification”. Telephone inquiries will not be accepted or acknowledged.

All interested firms must be registered in the System for Award Management (www.SAM.gov) and maintain an active registration for the duration of the contract to be eligible for award of Government contracts.