W912P721B0007 Suisun Bay_NY Slough FY21 Dredging RFIs.pdf

SUISUN BAY/NY SLOUGH DREDGING PROECT

CONTRA COSTA, CALIFORNIA

AS OF: 16 June 2021

QUESTIONS & RESPONSES

SOLICITATION NUMBER W912P721B0007

The intent of this section is to provide questions & comments received from interested parties on the above solicitation, and our responses to those questions and comments. It is possible that the information below does not reflect 100% of the questions and responses. The questions and comments do not necessarily represent questions received from any particular contractor.

Questions and responses are provided for information only and are not made part of the solicitation. Only a formal amendment (SF30) to the solicitation changes the solicitation.

Changes to any previous responses in this document will be struck-through and new, updated responses will be provided as appropriate

RFI # Spec Section RFI (Question) Responses

1 Sheet G-3

Reach 2 (Sta 62+00 – Sta 88+00) on the plans indicates that it is “Advanced Maintenance Dredging”. Please clarify what constitutes advanced maintenance dredging in this area since it has been dredged to -37 in the past.

Reach 2 (Sta 62+00 – Sta 88+00) is “Advanced Maintenance Dredging” since it would be dredged to -37 f t. All the other reaches of the Suisun Bay and NY Slough Channel are to be dredged to -35 ft.

2 01 45 00.00

SECTION 01 45 00.00 10, 3.4.3, CQC Personnel indicates that “In addition to CQC personnel specified elsewhere in the contract, provide as part of the CQC organization specialized personnel to assist the CQC System Manager for the following areas: environmental and submittals clerk.” In addition, it requires that the Environmental QC have the following qualif ications: Graduate Environmental Engineer, Scientist or Biologist with 3 yrs experience. It is requested that the Environmental QC qualif ications be removed from the Specification.

The request to remove the Environmental QC qualifications f rom the Specifications is denied.

3 01 57 19.97

SECTION 01 57 19.97 43 FISH ENTRAINMENT MONITORING

requires the purchase of six acoustic transmitters (tags) and suggests that additional be purchased in the event that any are lost. Does the Government have a recommendation, based on past experience, of how many extra tags should be purchased? It is also requested that information about how to attach the tags be provided.

It’s recommended that two extra tags be purchased. The tags should be attached using cable ties.

AS OF: 16 June 2021

QUESTIONS & RESPONSES

SOLICITATION NUMBER W912P721B0007

This project bids on Monday, June 28, 2021. It is requested that in order to get maximum participation from subcontractors that the bid date be moved to another day of the week (besides Monday).

Bid due date is hereby extended to June 29.

5 01 57 19.97

SECTION 01 57 19.97 43 FISH ENTRAINMENT

MONITORING requires that “Video footage shall be delivered to the government via SD card, portable hard drive, or wirelessly and shall be delivered within 24 hours of completing the recordings.” It has been our experience that the files generated by the specified Go-Pro Hero7 Black Cameras for one 4 camera event is on the order of 100 GigBytes plus and depending on the transmission method, takes some time for the file transfer. It is requested that at least 72 hours be allowed for the file transfer.

The request is granted. The specifications are to be amended to allow 72 hours for the file transfer.

The timeframe for requesting the DOD SAFE code was not clear in the Specifications. The last bid that we submitted, the code was only valid for 7 days. Is it acceptable to request the DOD SAFE code on June 21 for a June 28 bid date?

DoD SAFE code is good for 7 days.

7 01 32 01.00

Paragraph 3.4.1 “Preliminary Project Schedule Submission” of section 01 32

01.00 10 states the Initial Project Schedule is due 42 calendar days after NTP is issued but Paragraph 3.4.2 “Initial Project Schedule Submission” states the Initial Project Schedule is due within 15 days of the NTP being issued. Which is the correct date?

The Preliminary Project Schedule is due 7 calendar days after NTP is issued. The specifications are to be amended with the correct date.

8 01 35 00

Paragraph 3.2 of Section 01 35 00 “Munition Response Site” states “Provide skiff transportation to/from the port to dredge with the normal crew change. It is anticipated that this may occur once per week while in the MRS.” In regards to the skiff transport, is the USACE expecting the Contractor to provide a separate vessel for transport of UXO/MEC personnel or will dredge access by use of and alongside the dredge crew be sufficient?

No separate transportation vessel is needed for USACE personnel. The contractor’s vessel will need to be able to accommodate 1-2 additional USACE personnel above the normal contractor crew size to facilitate inspection of the barge or operation. USACE personnel will stay on the barge until the next crew change. No special trips are required from the contractor.

9 01 57 19.01

Paragraph 3.2.1 of section 01 57 19.01 43 states the obligation of the Contractor to “Mark the areas that need not be disturbed under this Contract prior to commencing dredging activities.

Correct. Paragraph 3.2.1 of section 01 57 19.01 43 states “Mark the areas that need not be disturbed under this Contract prior to commencing dredging activities.”

AS OF: 16 June 2021

QUESTIONS & RESPONSES

SOLICITATION NUMBER W912P721B0007

10 01 57 19.01

Mark or fence isolated areas within the general work area that are not to be disturbed.” Besides the monuments, are there any other areas that will need to be marked?

No.

11 01 57 19.01

Paragraph 3.2.2 “Contractor Facilities and Work Areas” of section 01 57 19.01 43 states “Provide erosion and sediment controls for onsite borrow and spoil areas to prevent sediment from entering nearby waters.” Can the USACE provide clarification on necessary erosion control measures for the material placement site at SF-16?

Erosion control measures are not needed for the material placement at SF-16.

12 01 57 19.97

Paragraph 3.1.1 “Acoustic Tags” of section 01 57 19.97 43 discusses the attachment of the acoustic tags to the clamshell bucket and states “The Government can provide information about how to attach.” Can the USACE please provide information on how to attach the tags?

The tags should be attached using cable ties.

13 01 32 23

Section 01 32 23 Hydrographic Surveying states “The Government will perform volume computations based on the third-party contractor's (furnished by the Contractor) final Before-Dredge (BD) and After-Dredge (AD) surveys under this contract.” Will the contractor be required to hire a 3rd party contractor to perform all payment surveys or at least get them stamped by a registered professional licensed surveyor?

Yes, the contractor will be required to hire a 3rd party contractor to perform all payment surveys.

14 01 57 19.01

Can the USACE please provide all of the acquired permits if not already included in the specifications package?

All acquired permits have been included in the specifications.

Are there vessel speed restrictions within the Suisan Bay Channel, NY Slough, or placement site SF-16?

The vessel speed restrictions are in the Coast Guard Publication specified in Paragraph 3.10 of section 01 35 26 of the specifications.

16 01 57 19.97

SECTION 01 57 19.97 43, FISH ENTRAINMENT MONITORING, 3.1.2 Video Cameras states that “Video footage shall be delivered to the government via SD card, portable hard drive, or wirelessly and shall be delivered within 24 hours of completing the recordings.” Is it the Corps intent to keep all of the SD cards, or return them to the Contractor after each set is downloaded?

The government will return SD cards or portable hard drives to the Contractor within 72 hours of receipt.

17 01 57 19.97

SECTION 01 57 19.97 43, FISH ENTRAINMENT MONITORING, 2.1

Acoustic Transmitters states that “Acoustic transmitters must be compatible with the Government's acoustic receivers and are produced by only one manufacturer.”

Please confirm that acoustic receivers are provided by the Government at no cost to the Contractor.

It is conf irmed that the Government currently owns the acoustic receivers and will deploy and operate them at no cost to the contractor.