Secant Wall Construction, Montgomery L/D, Ohio River, PA

Administrative Note:

All references to this posting shall be referenced as W911WN21B8000. W911WN21B8000 is the Solicitation Number to this requirement.

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The U.S. Army Corps of Engineers, Pittsburgh District, has a requirement for construction of a secant pile wall at Montgomery Locks and Dam, Ohio River, PA. The secant pile wall will be constructed downstream of Gate Bay 1, through the concrete apron. The major  features of the contract are identified below:

1. Installation of a bulkhead system on top of the fixed crest dam, commonly referred to as “flashboards”;
2. Installation of instrumentation and monitoring devices including on top of the apron underwater;
3. Drilling of exploratory test borings at the center of piles shown on the contract drawings;
   • If extensive voids are present, as directed in specifications, grouting under the apron may be required, prior to drilling the Primary/Secondary piles;
4. Construction of demonstration secant piles;
5. Demolition of existing concrete baffles, as required;
6. Layout of secant wall;
7. Removal and disposal of limited portions of concrete apron;
8. Drilling and placement of primary piles;
9. Drilling and placement of secondary piles;
10. Pressure grouting at both ends of secant wall;
11. Under the apron grouting may be required to fill voids created by construction.

The work is to be performed downstream of Gate Bay 1, with the centerline of the secant wall 14’ riverward off of the centerline of Pier 1. Water elevations shown below may vary and all elevations shown are for information purposes only. Typical downstream pool elevation at Montgomery Locks and Dam is 664.5’, with the top of apron elevation of 647.5’. Top of alluvium, which is just under the concrete apron, is elevation 642.5’ and the top of rock elevation is elevation 620.0’+/-. Pool elevations will not be adjusted for this contract, though altered Gate Schedules will be followed in order to aid the Contractor with reduced turbulence. Construction of the secant wall will involve drilling through the 5’ thick concrete apron, alluvium, and an estimated 18’ into rock for the secondary piles. Each pile is approximately 4’-0” in diameter, and will be filled with tremie concrete, or a steel wide flange reinforcement beam and tremie concrete. There are 17 piles that are shown on the contract drawings, 10 secondary piles (tremie concrete with steel wide flange reinforcement beam) and 7 Primary Piles (tremie concrete alone). All work will be performed from the Contractor’s floating plant located downstream of Gate Bay 1 and the fixed crest dam. Dive work is to be expected for this project. This project shall be completed, including final submittals, by 31 December 2022.

Off-site disposal of concrete, alluvium, and rock will be required. Debris and rubbish shall be disposed of at a properly permitted facility licensed to accept waste or recyclable materials as applicable.

Construction work will occur in close proximity to waterway traffic and operating lock and dam gates. The existing lock chambers are currently operated 24 hours a day, 7 days a week.

The magnitude of the project is between $5,000,000 and $10,000,000.

This procurement will be advertised on an Unrestricted basis. The resulting award will be for one (1) Firm-Fixed-Price (FFP) contract. The NAICS code for this acquisition is 237990, Other Heavy and Civil Engineering Construction. The Period of Performance (PoP) will be 535 calendar days after the date of receipt of the Notice to Proceed (NTP).

All responsible offerors are encouraged to participate. The Invitation for Bid (IFB) will be issued on approximately 30 March 2021, online through the https://beta.sam.gov/ website; therefore, requests for hardcopies of the solicitation, specification and drawings will not be honored.  In order to receive notification of any amendments to the solicitation, interested vendors must register as an interested vendor on the beta.sam.gov website under the Notice Id.  If you are not registered, the Government is not responsible with providing notification of any changes to the solicitation.

Contractors must be registered and active in the System for Award Management (SAM) database before submitting a bid on this solicitation (visit https://www.sam.gov/SAM to register). SAM is free to use.

ATTENTION: For companies new to the Army Corps of Engineers, Pittsburgh District, the link below will take you to a training Powerpoint slide presentation which will provide information essential to new contractors to help them navigate our bidding process. It will also help to make bid-no bid decision as it contains information on what will be required on a Post-Award performance basis - submittals, timelines, deadlines & milestones, necessary paperwork you need to supply, etc. This will help you capture everything needed in your bid so that there are no surprises later on. This training is not mandatory to be considered qualified to bid; it is meant as a means to assist you in becoming better prepared to work with the Corps of Engineers, Pittsburgh District. You can access the training using the link below:
http://www.lrp.usace.army.mil/Portals/72/docs/SmallBusiness/Solving%20the%20Mystery%20-Understanding%20USACE%20Pittsburgh%20Contracting%20Process.pptx

You may give feedback on the training package to the District's small business specialist using the email address of LRP.SBO@usace.army.mil.