W912P721B0006 - San Joaquin DWSC FY21 Dredging - RFI - Amendment 1.pdf

SAN JOAQUIN - STOCKTON DWSC DREDGING PROECT

SAN JOAQUIN, CALIFORNIA

AS OF: 14 June 2021

QUESTIONS & RESPONSES

SOLICITATION NUMBER W912P721B0006

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 01 57 19

If you could please assist, I have a question regarding the Table 1 “Stockton Deep Water Ship Channel BMPSs”. In the attachments to 01 57 19 on page 209 (PDF counter) provides important information about placement sites.

However, Tule Island placement site is not included.

Please provided all Table 1 categories of information for Tule Island including but not limited to “method of return water and site specifications”.

Please see attached pdf document (Amendment to the Formal Consultation) dated 21-March-2019 for additional details on Tule Island placement sites.

Please give us the breakdown of any cells at each of the disposal sites.

Breakdowns of any cells at each of the disposal sites is not available at this time. All the disposal sites shown on the pricing schedule have sufficient capacity for the estimated quantities in the bid and government is ready to assist during construction.

Please provide any pre and post surveys of the Government furnished placement sites.

Pre and post surveys are not available at this time. All the disposal sites shown on the pricing schedule have sufficient capacity for the estimated quantities in the bid.

4 Please identify any private land or contractors furnished placement site locations used in the past.

All disposal sites shown on the pricing schedule are Government Furnished

5 Please provide any pre and post surveys for contractors furnished placement site locations used in the past.

Dredged material is only to be disposed at the Government furnished upland sites per the Specification.

6 01 11 00

Paragraph “b.” under section 1.2.1 “Requirements” under section 01 11 00 states “The priority of the dredge areas should be set based on the before dredge survey with areas with the highest shoaling such as areas not dredged in the previous year. In addition, dredge area six should be a priority.” Will the

Yes, also see SECTION 01 32 01.00 10, Paragraph 3.4.1 Preliminary Project Schedule Submission

AS OF: 14 June 2021

USACE allow the Contractor to commence operations at dredge area six and proceed inbound numerically for the duration of the project?

7 01 57 19

The Biological Opinion designates Stations 740+00 to be the landing station for the Bradford Island DMPS. Will the USACE allow the Contractor to utilize the canal on the East side of Bradford Island to lay subline in it and land on the East side of Bradford Island? From that landing location, the Contractor would access the East edge of the DMPS by laying pipe across the island from East to West in efforts to shorten the discharge pipeline length.

The landing points are up to the dredging contractor and field conditions.

Will the USACE allow the Contractor to place material from Reach 10 and Reach 11 into the Mandeville DMPS instead of the Bradford Island DMPS in efforts to reduce discharge pipeline length?

Yes, see amended pricing schedule.

9 01 57 19

Bid Items 00015 and 00016 for Reaches 17 and 18 respectively designate the Dredge Material Placement Site as “Tule Island.” The listed “Tule Island” is not listed on the “Approved Dredged Material Placement sites” in the Memorandum of Understanding between the California Regional Water Quality Control Board, Central Valley Region and the USACE San Francisco District nor is it listed on the Biological Opinion from the United States Department of the Interior’s Fish and Wildlife Service. Can the USACE please confirm permitting approval for material disposal at Tule Island?

Please see attached pdf document (Amendment to the Formal Consultation) dated 21-March-2019 for additional details on Tule Island placement sites.

10 01 57 19

Table 1. In the Biological Opinion from Department of the Interior’s Fish and Wildlife Service and Table 1 in Section 3.4.1.2 in Spec section 35 20 23 both state Station 1975+00 as a landing point for Roberts Island I DMPS. According to the plans, a perpendicular line from the centerline of the channel at Station 1975+00 does not intersect the Roberts Island DMPS. Can the USACE provide the coordinates for desired location of pipe entry into the Roberts Island I

DMPS?

The landing points are up to the dredging contractor and field conditions.

11 Form SF

Form SF 1442 states that the contractor must begin performance within 1 calendar day after receiving award. Clause 52.211-10 incorporated by full text states that the contractor must commence work under this contract within 1 calendar day after receiving the Notice To Proceed. Please clarify if work must commence 1 calendar day after award or 1 calendar day after NTP. As well, please clarify what constitutes as “commencing work.”

See amended SF 1442. “Commence work” means to begin work per the contract requirements and schedule.

Can the USACE please provide existing material elevations for the various DMPS sites to be used by the Contractor?

All the disposal sites shown on the pricing schedule have sufficient capacity for the estimated quantities in the bid.

There is no elevation data at this time.

13 What is the authorized fill elevation of the Dredged Material Placement Sites? Per the MOU with the waterboard, 2 feet of freeboard is

AS OF: 14 June 2021 needed at all sites.

Please provide coordinates and any available documentation for all Dredged Material Placement Sites provided for this Contract.

Please use the maps and the stationing provided with the solicitation package. All the disposal sites shown on the pricing schedule have sufficient capacity for the estimated quantities in the bid.

15 What is the available capacity of each of the placement sites for this Contract? All the disposal sites shown on the pricing schedule have sufficient capacity for the estimated quantities in the bid.

16 01 57 19

Figure 7 at the end of the specifications shows an aerial depiction of the Mandeville DMPS. Specifically outlined in the map is a Containment Berm. Is this Containment Berm already constructed or will the Contractor be responsible for constructing this berm. As well, will the Contractor be allowed to place material on the West side of this berm?

Containment berm is already constructed. Possible negotiations with Port of Stockton and landowner would be needed to place material west of the berm.

17 01 32 23

Section 01 32 23 Paragraph 1.7.3 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.”

However, FAR Clause 52.236-16 Part (b) states, “The Contractor shall conduct the original and final surveys and surveys for any periods for which 2 Golden Triangle Marsh Creation Project Request for Information progress payments are requested.” May payment surveys be performed by the Contractor or must a third party survey company be utilized?

The payment surveys must be performed by a Third Party survey company (NOT the contractor).

Will the USACE please consider allowing the Contractor to place dredged material at the DMPS of the Contractor’s choosing, provided that the site is one of the four provided in the Plans?

See Section 35 20 23, Paragraph 3.4.6. Reaches and disposal sites are specified in the contract pricing schedule.

May the Contractor pump into one or more DMPS concurrently or is the Contractor required to exhaust one reach and/or DMPS before moving to the next?

See Section 35 20 23, Paragraph 3.4.6. Reaches and disposal sites are specified in the contract pricing schedule.

20 Does a reach have to be completed and accepted before dredging can begin in another reach?

Government plans to administer in accordance with the contract requirements

21 Table 1 from the Biological Opinion provides ponding areas and volumes for the Dredged Material Placement Sites.

a 01 57 19 Is the Contractor to assume that this is the usable fill area that will be available for material placement?

Yes. All the disposal sites shown on the pricing schedule have sufficient capacity for the estimated quantities in the bid b 01 57 19 Are there any conflicting operations within any of the placement sites that would reduce the fill area and capacity available to the Contractor?

No.

c 01 57 19 The ponding areas provided don’t appear to match the areas shown in the plans. Can the

The map in the plans shows the overall area of the placement site.

AS OF: 14 June 2021

USACE please verify the fill area of each of the material placement sites?

22 01 57 19 Will the USACE please provide further information on the specifications of the fish entrainment device?

See attached Schematic drawing of the fish entrainment device.