Contractor Questions Answered Part 2.pdf

1. The combined synopsis solicitation document indicates on page 3 that CLIN 1 is due 180 days after award. CLIN 1 is described on page 4 as the debris boom system and anchors. I take that to mean the products that make up the debris boom system and anchors. CLIN 2 is the delivery and CLIN 3 is the installation.

The Purchase+Description document indicates in paragraph 7.0 that preliminary deliverables are due 60 days after award and final deliverables 120 days after award. It further states that the boom is to be delivered 240 days after award.

So the question is, is CLIN 1 considered to be completed before the boom gets delivered to the site? If not, CLIN 1 requires delivery in 180 days but the contractor is allowed up to 240 days to deliver it per paragraph 7.0. Further, if the government were to approve the final deliverables at day 120, 60 days does provide much time for the boom supplier to acquire the material and fabricate the boom system. Please clarify.

1. Purchase Description Section 7.1 Amendment:

Purchase Description Section 7.1 has been amended to clarify the deliverable and delivery schedule as follows:

- On-Site Delivery: The debris boom system and components shall be delivered on site within 300 calendar days of contract award.

2. Section B (Supplies or Services & Prices/Costs) Amendment:

Section B has been amended to restructure the CLINs to establish and align the Period of Performance (POP) across CLINs.

2. The load scenarios presented will result in very high loads on the boom system and anchor points, such that drag anchors (Danforth or similar) likely won’t be sufficient to counteract the loads on the boom. The identification in the

Purchase+Description document of the lake bottom surface and bedrock elevations at the deflection points of the conceptual boom outline suggests the intent is to use guide piles at the deflection points to anchor the boom. This would result in pile heights up to 80 feet with large cantilever loads (large diameter piles) because of the depth of water and relatively shallow bedrock. This may be impractical. Because of the large loads and permanence of the structure, some kind of drilled and grouted anchor or stake pile in the lake floor seems more appropriate than Danforth anchors, but either way, this would require a spread moorings with anchor lines extending out in multiple directions.

The RFQ does not include bathymetry or borings outside that local footprint under the proposed layout. Can the government clarify what the intent/expectation is for the debris boom anchoring? Can the government provide geotechnical/boring data out away from the boom location? E.g. (745 ft

– 660 ft) = 85 ft. For an anchor line scope of 5:1 this would be 425 ft out away from the boom.

The Government does not mandate or prefer any specific anchoring system type, provided that the supplied anchors satisfy all requirements of the purchase document and fully support the specified loading conditions and required factors of safety. All soil and rock borings available from the Government for Harry S.

Truman Dam and the immediate project vicinity are included in Attachment 1 of the Purchase Description. Attachment 1 of the Purchase Description was revised to add additional boring historical data. Contractors are responsible for evaluating the boring information provided in developing their proposed anchoring solution and load calculations. Additionally, a multibeam point cloud bathymetry survey is posted in the ProjNet Plan Room as a text file (Projection: NAD83 UTM Zone 15, US Survey Feet; Vertical Datum: NAVD88). bathymetry survey was completed on August 10, 2023.

To access the bathymetry survey use projnet.org

Project: (Truman Debris Boom Project)

Current Room: ( Bathymetry survey W912DQ26QA080 )

Current Key is: 5IR97K-DT8DM3

3. Pdf page 14 of the Purchase+Description document indicates that Anchor Point

A-4 of the conceptual outline is shown on the upstream berm of the dam but goes on to say that anchor points aren’t allowed to penetrate the dam or the berm. Can the government clarify where the intended anchor point for Anchor A-

4?

The layout diagram provided in the Purchase Description is intended solely to demonstrate design intent. The actual alignment and positioning of the boom may vary, provided that the proposed configuration satisfies all performance and operational requirements of the purchase description. If the Contractor's proposed engineering solution requires drilling into, on, or under the earthen dam, reviews will be performed by USACE as stated in Section 3 (General Project Requirements) of the Purchase Description document.

4. The conceptual outline for the debris boom shows the boom terminating at the dam face but does not identify these as anchor points. Can the government clarify if these are boom anchor points? If the boom is to be anchored to the dam what is the specific material and condition at the anchor points?

There are no existing anchor points on the concrete dam monolith. Reference is made to Section 4.10 of the Purchase Description regarding anchoring to the dam structure. The Contractor is required to furnish the complete engineering design, specific attachment locations, and all required material testing for the anchorage to the dam face to ensure sound structural integration with the existing concrete structure.

5. What is the anticipated process for clearing the debris mat?

During regular operations and post-flood events, USACE personnel will utilize project workboats to move debris to designated reservoir shoreline areas. The operational intent is to drag accumulated debris off the boom, pull it to the shoreline, cut it, and dispose of it. Project staff will routinely observe the barrier to ensure that excessive quantities of debris do not accumulate on the boom before removal operations commence. Reference is made to Section 7.3 of the

Description of Work for information required from the Contractor. The Contractor is required to provide the Government with an operations and maintenance manual detailing best practices for debris management, recommended equipment interaction guidelines, and maintenance procedures to ensure long-term integrity of the boom system.