Dredging

Beach

Capital/Fills

Nome Navigation Improvements

Channel Deepening, Los Angeles and
Long Beach Harbors

Maintenance

Environmental

Capital/Fills

Channel Deepening, Los Angeles and
Long Beach Harbors

Customer
U.S. Army Corps of Engineers

Location:
Los Angeles, CA

Owner Contact:
Stan Fugimoto

Contract Amount at Award: $167,154,476

Date of Award: September 2002

Date of Completion: Approx. April 2006

Project Description
This major deepening project consisted of several elements, beginning with the demolition of the Old Todd Shipyard and remnant timber piers, and removal of nine channel-crossing pipelines.

The dredging portion of the project involved removal of 8.8 million cubic yards of in-harbor sediment to deepen the channel to -53 mean lower low water (MLLW). The dredge materials were used to build three land fills, and three submerged fills. Containment dikes were built in the disposal areas with 3.5 million tons of rock.

In addition, 2.3 million cubic yards of existing Pier 400 surcharge were excavated and shipped to a submerged fill, and more than 1 million cubic yards of dredge material were transferred within the project to surcharge the landfills.

The project was completed with the installation of 2.6 million linear feet of underwater and 13.5 million linear feet of under-surcharge wick drains. Also included were the installation and monitoring of geotechnical instruments.

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