1305M324B0002 Amend 2 Q and A.pdf

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IFB: RESTORE Florida Connecting Coastal Waters Money Bayou in Gulf County, Florida
Solicitation number
1305M324B0002
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This document is a Questions and Answers (Q&A) amendment related to Solicitation Number 1305M324B0002 for RESTORE Florida Connecting Coastal Waters Money Bayou Construction Services. The solicitation is a Firm-Fixed-Price contract set-aside for HUBZone small businesses located in Florida or the Gulf Coast states. The estimated contract value is between $500K to $1M. Key details include:

The Q&A addresses questions on dewatering, subgrade compaction and density testing, and acceptable coarse aggregate specifications. Dewatering methods are at the contractor's discretion, subgrade compaction is required but density testing is not, and the specified 1-2 inch coarse aggregate cannot be substituted with 6-8 inch stone. Locally sourced limerock is acceptable if it meets the technical specifications. The procurement is being conducted by the National Oceanic and Atmospheric Administration (NOAA).

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1305M324B0002 0002

CONSTRUCTION SERVICES: RESTORE FLORIDA MONEY BAYOU PROJECT

SOLICITATION NUMBER 1305M3-24-B-0002

QUESTIONS AND ANSWERS

AMENDMENT 0002

Amendment 0002 is issued to address questions received in response to the Request for Quotation (RFQ).

1. Question: Can dewatering be accomplished by installing cofferdams and diverting the water?

Answer: The means and methods for dewatering, including the need to dewater, are at the discretion of the Contractor. The Contractor must review the recommendations within the Geotechnical Exploration Report (Appendix A) regarding dewatering.

Should the Contractor elect to install a cofferdam, the Contractor must not construct cofferdams at multiple LWCs concurrently due to concerns with restricting drainage of the Money Bayou watershed.

2. Question: Is compaction required for subgrade of LWC? Is density testing required for subgrade and limerock?

Answer: Yes, compaction of the subgrade is required per (TP-9.1, TP-10.3, TP-

11.2, Appendix A – 9.3-Bearing Material). Post-compaction in-situ density testing of the subgrade is not required. However, ensuring that the subgrade is sufficiently compacted prior to the placement of coarse aggregate will help limit subsidence of the coarse aggregate when the coarse aggregate is rolled.

TP 10.8.1 requires submittal of product specifications. This submittal should include the density of the stone provided by the quarry. The Contractor is not required to perform an independent test of coarse aggregate density. The project quantities (tonnage) was based on a stone density of 150 pcf.

1305M324B0002 0002

3. Question: Does subgrade need to be rolled?

Answer: The subgrade needs to be graded and compacted per (TP-9.1, TP-10.3, TP-11.2). The means and methods by which the Contractor performs this work is at the Contractor’s discretion. Compaction using a roller is permissible but not a requirement.

4. Question: Can 6’’-8” stone be used in lieu of 1-2” in construction of LWC and voids filled in with 1-2” stone?

Answer: No. The Contractor must place stone as required by the plans and specifications.

5. Question: What are the minimum specific gravity and the minimum weight rodded cubic foot that will be accepted for the course aggregate? Will L.A.

tests from 0 % to 35% be accepted? Will locally sourced lime rock be acceptable?

Answer: Lime rock, including locally sourced lime rock, will be acceptable, once it is not produced from pre-Cenozoic limestone and it meets the technical provisions detailed in the specifications, including Appendix B, Florida Department of Transportation (FDOT) References.

The minimum dry-rodded weight for all coarse aggregate shall be 95 lb/ft3, per FDOT 901-2.1, included in Appendix B. Note that project quantities were based on a higher density to account for the Contractor potentially using stone density stone greater than 95 lb/ft3. The Contractor should make their own evaluation of how the in-situ stone density could affect the project quantities.

Per TP-10.2.2, the stone shall have a maximum loss of 35% based on the Los Angeles abrasion test (FM-1-T 096). The Contractor does not have to perform this test on a sample of material delivered to the site but shall submit LA abrasion test results for the quarry that is supplying the stone, per TP-10.8.1. Test results provided by the quarry are sufficient.

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