SHC 21-B-0013_Amendment 0004.pdf
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- Solicitation number
- W912DS21B0013
About this file
This amendment modifies a solicitation for maintenance dredging of the Sandy Hook Channel in New York Harbor. The work includes dredging approximately 103,185 cubic yards of material from the channel and placing it in an offshore borrow area or approved upland site. The amendment acknowledges an increase in dredging quantities based on a recent survey and revises relevant sections of the specifications and bid schedule accordingly. It does not change any other aspects of the solicitation. The solicitation seeks bids for dredging and material placement to be completed within 24 calendar days. The Army Corps of Engineers is the contracting agency.
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Other files
| File | Type | Posted |
|---|---|---|
| 030820211419W912DS21B0013.xlsx | XLSX spreadsheet | |
| Copy of AbstractForm1419W912DS21B0013.xlsx | XLSX spreadsheet | |
| SHC 21 Drawing Sheet 4_Amendment 0004.pdf | ||
| Amendment 0004.pdf | ||
| SHC 21 Drawing Sheet 5_Amendment 0004.pdf | ||
| W912DS21B0013-Amendment 0003.pdf | ||
| W912DS21B0013 0002.pdf | ||
| W912DS21B00130001.pdf | ||
| 3 - (Revised) SCH21 Specifications 2021 06 09.pdf | ||
| 22062021W912DS21B0013.pdf | ||
| 2 - SCH21 Plan Drawing Sheets 1-6 RTA_May 2021.pdf |
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Text version
AMENDMENT 0004
Maintenance Dredging of Sandy Hook Channel, New York Harbor, Federal Navigation Project
W912DS-21-B-0013
The purpose of this amendment is to acknowledge the quantity increase to be dredged under this contract and incorporate such revision(s) to the subject solicitation:
This amendment makes changes to the contract specifications, plans and bid schedule
The following changes are made to the Contract Specifications:
SECTION 01 11 00, SUMMARY OF WORK, paragraph 1.2.1, PROJECT DESCRIPTION, is revised as follows:
The work to be performed under this project consists of providing all materials, plant, labor, equipment and services (except those furnished by the Government) to perform maintenance dredging of an area within the New York Harbor, Sandy Hook Federal Navigation Channel, with placement of the material at the South Sea Bright Offshore Borrow Area (SBOBA) or at a contractor furnished, state permitted, Government approved upland placement site(s). Dredged material placement at SBOBA shall only be placed within the approximately 93-acre placement area in SBOBA with coordinates as identified on the contract plans. The contractor will be solely responsible for coordination and compliance with the transportation, offloading, and placement site(s) requirements. See SECTION 35 20 23.10 18 and SECTION 35 20 29 for more information about dredged material transport, placement and monitoring.
The Maintenance for this project consists of dredging approximately 103,185 CY of material based on a Plans and Specifications survey completed on 14-16 and 19 July 2021.
For more detail, see "ESTIMATED QUANTITIES" in Section 01 30 00 "ADMINISTRATIVE REQUIREMENTS" of these Specifications. The dredge material has been determined to be composed sand and gravel.
A summary of the Basic Work and Options are shown on the table below:
TOTAL
ESTIMATED
QUANTITY
(CY)
CONTRACT TIME
FOR COMPLETION
(Calendar Days) BASIC WORK - Dredging, Transportation and Placement of Dredged Material at SBOBA (-35 feet MLLW + 2 feet overdepth)
103,185 24
OPTION 1 –
Dredging, Transportation, offloading, and Placement of Material from Basic Work Dredging Area (CLIN 0002) to a contractor-furnished, state approved, upland placement site(s). This Line Item represents the price difference (positive or negative) between the Basic Work and Option 1.
103,185 24
*The remainder of this paragraph from here on remains unchanged*
AMENDMENT 0004
Maintenance Dredging of Sandy Hook Channel, New York Harbor, Federal Navigation Project
W912DS-21-B-0013
SECTION 01 30 00, ADMINISTRATIVE REQUIREMENTS, paragraph 1.10, ESTIMATED QUANTITIES, is revised as follows:
The total estimated quantities of material necessary to be removed from the specified limits to complete the work described in this specification are computed from the Plans and Specifications survey performed in the Sandy Hook Channel on 14-16 and 19 July 2021.
Distribution of volumes is summarized below:
New York Harbor, Sandy Hook Federal Navigation Channel
WORK
AREA
REQUIRED
DREDGING
DEPTH (FT.)
MEAN
LOWER
LOW WATER
(MLLW)
CHANNEL
TO
GRADE
(CY)
CHANNEL
OVERDEPTH
FEET (CY)
SLOPE
TO
GRADE
(CY)
SLOPE
OVERDEPTH
2 FEET
(CY)
ESTIMATED
TOTAL
(CY)
BASIC
WORK 35 35,425 39,505 18,360 9,895 103,185
Total Estimated Quantity Available: SBOBA Placement: 103,185 CY
If Option is exercised Upland: 103,185 CY
The Government will survey the Channel prior to starting work. Above estimated quantities were computed from the shoals shown on the contract drawings. The quantities that may be removed and paid for will be computed by the Triangulated Irregular Network (TIN) method or average end area method as indicated in the Technical Specifications, Section 01 22 00.00 10, entitled
"MEASUREMENT AND PAYMENT."
This amendment does not change any other parts of the solicitation.
The following changes were made to the Bid Schedule:
See revised Bid Schedule attached. Changes to Bid Quantity and NOTE 4.
The following changes were made to the Contract Plans:
See revised Contract Plans, changes were made to Sheets 4 and 5 of 6.
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