35 20 23 (Dredging) - Amendment-2.pdf
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- Solicitation number
- W912P722B0004
About this file
This document provides details for a federal dredging contract opportunity with the U.S. Army Corps of Engineers. The solicitation seeks a contractor to perform annual maintenance dredging of the San Joaquin/Port of Stockton River Deep Water Ship Channel to depths ranging from -35 to -40 feet MLLW, plus overdepth allowances. Dredged materials must be transported to various upland placement sites in accordance with the bid schedule. The full and open competition will utilize an invitation for bid and result in a single firm fixed price contract award. Bids are due on May 23, 2022 at 12:00 PM PDT and must be submitted through the System for Award Management website. The estimated cost range for this project is between $5-10 million. The contractor will be responsible for checking the website frequently for any amendments to the solicitation.
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San Joaquin-Stockton DWSC FY22 Maintenance Dredging 100% W912P722B0004
3.4.1.2 Government-Furnished Dredged Material Placement Sites
General descriptions of dredged material placement sites that have historically been used are listed in Table 1 below and are also indicated on the contract drawings.
The placement sites may or may not have existing return water facilities.
Such facilities may need to be constructed, repaired, or modified by the Contractor if dewatering is necessary.
The placement sites have been differentiated into two classes based upon the means of accessing the sites. The Class I sites are accessible by road while Class II sites are accessible only by barge or ferry. The placement sites are further classified based on the amount of additional pumping head required to overcome the higher ground elevation at certain sites including the mounding of the dredged material. The letter "E" designates those sites where an elevation and mounding allowance has been provided above a nominal placement site elevation of 18' above mean sea level at the point of pipe landing. This elevation allowance is in addition to the pumping allowance discussed below.
The landing points identified in Table 1 below represent a selected point in the placement site. The pumping allowance is the additional pumping distance from the landing point to the discharge location inside the placement site. The stationing of the landing point is determined by a perpendicular projection of the channel's centerline stationing onto this point. It represents the shortest distance between the channel's centerline stationing and the shoreline at the landing point. For additional environmental requirements and restrictions refer to Section
01 57 19 TEMPORARY ENVIRONMENTAL CONTROLS.
Table 1 - Placement Site Information Placement Site Landing Point
Station/River Mile
Furnished by/Point of Contact (POC)
Class "E" Pumping Allowance
(ft)
Stockton - Antioch Dunes
314+00/7 Port of Stockton/USACE I Yes 2,300
Stockton - McCormack Pit
Scour Pond
564+00/10.5 423+00/8
Port of Stockton/USACE I Yes 3,700 900
Stockton - Bradford
Island
740+00/14 Port of Stockton/USACE II Yes 500
Mandeville 1296+00/24.5 Port of Stockton/USACE I Yes 500
Stockton - Roberts II
1840+00/34.9 Port of Stockton/USACE I Yes 300
Stockton - Roberts I
1975+00/37.4 Port of Stockton/USACE I Yes 300
Stockton - Rough and
Ready Island
2105+00/39.7 Port of Stockton/USACE I Yes 2,750
SECTION 35 20 23 Page 10 Mar 30, 2022
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