Amendment 0003 RFI Responses.pdf

N4008526B0002; AMEND0003

6. RFI RESPONSES:

Question

Reference Question Government Response

Page Section Paragraph

1 3 V-101 Note 2

Please provide survey data, in XYZ format, for the survey conducted in

November 2023. Also confirm that this survey is the most recent conditional survey.

November 2023 is the most current bathymetric survey available. XYZ file to be provided.

The solicitation states that “One of the following two disposal sites are proposed to be utilized..” and lists the

Weeks Marine Whites Rehandling

Basin and the Waste Management

Corporation Biles Island disposal facility; but mentions that Areas RB-

A, RB-C AND RB-D can be disposed of at Whites Basin or Biles Island, and that Area RB-A 7/8 must be disposed of at Biles Island, which implies that two sites must be utilized. The plans contradict this, noting on page V-002 that all project material can be disposed at Whites Basin, but only dredge Area A (excluding borings 7 and 8) and the access channel can be disposed at Biles Island. Please advise which is correct.

All Material from Area RB-A

7/8 shall be disposed at Biles

Island.

Please provide permits showing sediments are authorized for disposal

Whites Basin and Biles Island.

Permit provided with

Amendment 0003.

Please advise if there is a port security barrier and if it will remain open 24 hours a day during dredging operations.

Reserve basin and access channel will accessible 24/7.

The contractor shall be responsible to coordinate openings of the 26th Street drawbridge with the bridge operator.

There are numerous QC Specialists listed in the matrix with missing data for area of responsibility and frequency required on site. Please advise which is applicable.

Replace the entire

Specification SECTION 01 45

00 with the attached revised

SECTION 01 45 00 dated 08-

11-2026.

The QC Manager must be an individual with a minimum of

[5] years combined experience in the following positions:

Project Superintendent, QC

Manager, Project Manager, Project Engineer or

Construction Manager on similar size and type construction Contracts which included the major trades that are part of this Contract. The individual must have at least 2 years experience as a QC

Manager. The individual must be familiar with the requirements of EM 385-1-1 and have experience in the areas of hazard identification, safety compliance, and sustainability.

Please advise if the Underwater QC

Team is applicable to this contract.

Underwater QC team is not applicable

Please advise if the Fire Protection QC

Specialist is applicable to this contract.

Fire Protection QC team is not applicable

Regarding the 15 KV Power Line – will the power line be de-energized during the locate? If de-energized, will the power line remain de-energized during the dredging project? Will the owner pulse the power line so that the dive team can locate it?

Contractor shall coordinate with the utility owner regarding all details and logistics regarding the pre-dredge location and activity of the utility during dredging.

Please advise if the government will provide a waterside laydown space for offloading debris

Contractor shall assume that all debris will be staged on a barge during dredging and shall be transported via barge to an off-site transfer location.

Contractor shall be responsible for coordinating with the

Government Construction

Manager to arrange for any alternative material staging plan.

Please advise if the government will provide dockage for mooring barges and tugs during the project.

Dockage for mooring barges and tugs during the project shall be coordinated with the

Government Construction

Manager during pre-dredge meeting.

Can the government provide the last date these dig areas were dredged?

Can the government provide disposal tickets of debris from previous dredging episodes in these dig areas?

If expected debris is anticipated to be excessive, will the government consider increasing the line item for disposal of debris?

This information is not available.

Can the government provide disposal

(tipping) fees for the Weeks Marine

Whites Rehandling Basin and the

Waste Management Corporation Biles

Island disposal facility, or points of contact to obtain information on these fees, if any?

Contractor shall coordinate directly with the disposal site owner/operator regarding all disposal related fees and requirements.

Please provide current bathymetric survey data of Whites Basin as well as max disposal elevations.

This information is not available. Contractor shall coordinate directly with the

Whites Basin Owner/operator.

Please provide additional details on the storm sewer outfall (drawings, photos, height above/below waterline) so that the contract can accurately price an appropriate size turbidity curtain.

No additional information is available. Turbidity curtain shall be fabricated and installed pursuant to detail on

Sheet V-002 of plans.

Please provide current bathymetric survey data of the channel and approach near Biles Island

Bathymetric Survey of Biles

Island is not available by

NAVFAC. NAVFAC has only surveyed the PNY approach channel and reserve basin.

Bathymetric survey of the

Delaware River and Approach to Biles Island might be available form the Army

Corps of Engineers website.

Appendix A - Sediment Data - of the

Specification includes an August 2025 report titled "Evaluation of Dredged

Material" prepared by EA

Engineering, Science, and Technology, Inc., PCB. Please provide "Appendix

B - Field Logbooks" and "Appendix C

- Core Logs and Photographs" of this report.

Sediment sampling report

Appendix B and C can be provided upon request and sent via DoD SAFE.

Please provide the most recent geotechnical investigation and relevant historical investigations, including boring logs, completed within the Philadelphia Navy Yard

Reserve Basin.

See specifications Appendix

"B" for sediment sampling vibracores and lab testing results.

Can the government provide more details on the 15kv power line regarding size, estimated depth below mudline, locating equipment, etc. Any additional information is important to costing the locate should any jetting or excavating equipment be required to properly locate the power line.

No additional information is available. Contractor shall coordinate with the utility owner regarding all details and logistics regarding the pre-dredge location and activity of the utility during dredging.

Please confirm that the Government will displace all vessels in the digging area as needed in a timely manner.

All vessel movements shall be coordinated with the

Government’s Construction

Manager.

We request confirmation that Whites

Basin is currently available and has sufficient capacity to accept material for this specific project during the anticipated dredging window.

See the material acceptance letter received from the disposal facility. This is the latest information available.

Contractor shall coordinate directly with the disposal site owner/operator regarding all disposal related fees and requirements. Letter provided with Amendment 0003.

(End Summary of Changes)