Maintenance Dredging Project at Port of Cape Town

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Transnet National Ports Authority (TNPA)’s Dredging Services division has embarked on a $ 1.1 million maintenance dredging campaign at the Port of Cape Town to restore the design depths inside Duncan dock.

The maintenance dredging work, which began on March 8, 2017, is scheduled for completion by the end of April 2017. The main objective of the dredging work is to ensure the Port of Cape Town provides safe navigational channels and berthing facilities for shipping by restoring the original design depths.

Two dredging vessels, the Isandlwana, a Trailing Suction Hopper Dredger, and the Italeni Grab Hopper Dredger have been mobilized by TNPA Dredging Services for this purpose.

The Isandlwana, which has a 4,200 m³ hopper capacity, will remove approximately 70,000 m³ of material from the sea bed before the end of April. Spoil is pumped into the hopper and can be offloaded by discharging through 10 conical bottom valves. Pumping ashore is also possible by means of either a floating pipeline, a side discharge mechanism or by ‘rainbowing’, where the dredging vessel discharges material that has been claimed from the ocean floor in a high arc to build a landmass elsewhere, such as during nourishment of beaches, to prevent erosion along the coasts or to reclaim land.

TNPA’s fleet renewal program has boosted the dredging division’s capacity to aid the removal of approximately four million cubic meters of excess material from the seabed every year at South Africa’s ports.

The news is collated by Globaldredge.com – Dredging Pipeline Supplier

Maintenance Dredging of Kennebec River

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Solicitation Number: W912WJ-17-B-0005

Notice Type: Solicitation

Work Description:
The work involves urgently needed dredging of two portions of the authorized, 27-foot deep, 500-foot wide FNP in the lower Kennebec River. Dredging would restore the channel to its authorized dimensions and involves removal of a total of about 70,000 cubic yards (cy) of clean sand. Approximately 50,000 cy of material will be removed from the Doubling Point area (i.e. just below Bath) and approximately 20,000 cy of material will be removed from the Popham Beach area (at the river mouth). The 50,000 cy to be removed from the channel at Doubling Point includes approximately 35,000 cy of advance maintenance dredging. Material dredged from the Doubling Point area will be placed in the previously used in-river disposal area north of Bluff Head in about 95-100 feet of water. Material dredged from the Popham Beach area will be placed in the previously used 500-yard diameter nearshore disposal area located about 0.4 nautical miles south of Jackknife Ledge and in about 40-50 feet of water.

Posted Date: March 29, 2017

Due Date: N/A

Nation: USA

Contracting Office Address:
696 Virginia Road
Concord, Massachusetts 01742-2751
United States

Primary Point of Contact.:
Julio Hall,
CONTRACT SPECIALIST
Julio.E.Hall@usace.army.mil
Phone: 9783188035

The tender information is collated by Globaldredge.com – Dredging Pipeline Supplier

Utah Lake marina dredging project being postponed

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A $1.3 million dredging project that was to have begun in April at the marina at Utah Lake State Park is being delayed, probably until after Labor Day.

The postponement is due to a number of factors, including too few bidders in the original request, rising water levels, and concern not to interrupt the spawning season for the lake’s endangered June suckers, according to Jason Allen, manager of Utah Lake State Park.

There were also a few bidders for the job.

Allen tells the Daily Herald the first-ever dredging will involve walling off water to drain the marina.

Up to 3 feet of soil and rock will be removed to deepen the boat harbor, and work should be complete by May 2018.

Low water levels last year had the lake at its lowest level since 2004, with water at the marina at 3 feet or less.

The news is collated by Globaldredge.com – Dredging Pipeline Supplier

Veteran company to return to Oceanside harbor dredging

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The U.S. Army Corps of Engineers has decided to rehire Manson Construction Co. of Seattle to handle the dredging of the Oceanside harbor.

Manson had done the work for several years until 2016 when the Army Corps chose another contractor — CJW Construction of Santa Ana — to conduct the dredging. The work dragged on for months, city officials said, obstructing parts of the harbor entrance and nearby beaches during the busy tourist season.

CJW had problems in part because an extended vetting process prevented it from starting the work on time. The dredging work is typically finished by Memorial Day — the last Monday in May — but last year the job began in June and ended in October.

The dredging contract with CJW cost $5 million last year, and the 2017 contract with Manson is expected to cost about the same.

Manson will stage its bulldozers, pipes, and other equipment, and work could begin in another week or two. The dredging project is to have all the work done before Memorial Day.

The man-made municipal harbor requires annual dredging to remove the sand that ocean currents constantly deposit at the entrance. As the mouth of the harbor fills with sand, the shallower water increases the size of incoming waves, making the navigation more hazardous for boaters.

Dredging lowers the depth to more than 20 feet at the entrance to keep boats safe during low tides and high swells.

Sand dredged from the harbor is piped in a seawater slurry onto beaches south of the harbor beginning at about the North Coast Village condominium complex. Sometimes, depending on the amount of sand dredged and the conditions of the beach, it could be spread past the city pier.

Manson’s larger dredge has two main advantages over smaller equipment, Federer said. One is that it is more efficient and can move more sand in less time, and the other is that its size is less subject to sea swells and other ocean conditions.

The Oceanside harbor, built at a cost of $7 million, opened in 1964 with 520 boat slips.

The news is collated by Globaldredge.com – Dredging Pipeline Supplier

Dredge the New Jersey Waterway for the first time

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It is decided by the officials to make a dredging project in the New Jersey Waterway, which is the first time to do this work, and this time is to dredge a major waterway.

Because some parts of the channel accumulate sand, which leads to navigation challenges,the state Coastal Engineering Department announced that the necessary part of the work was the dredging of Little Egg Inlet.

The channel is so important, owing to being the main artery between Long Beach Island and Brigantine.

The state maps out removing about 1 million to 1.5 million cubic yards of sand so that the channel will be deeper. The new one maybe 25 feet below mean sea level, which its origin is only 6 feet.

What makes people reliable is that the dredging work will have almost no impact on the Forsythe National Wildlife Refuge and fish migration.

The news is collated by Globaldredge.com – Dredging Pipeline Supplier.

Dredging begins at Hagerstown City Park

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The dredging work of the lower lake in Hagerstown City Park is underway. It’s expected that the consistency of “pudding” can be finished in a month, on account of removing the silt.

The silt of the work will be sent to the Forty West Landfill off National Pike and is used to daily protection.

The project designed by Bayland Consultants, and the part of dredging hands over Edwin A.and John O.Crandell Inc., of West River, Md.

As a construction manager with Bayland Consultants & Designers, Bill Heckert believes that the work will be accomplished by the middle of next month.

Rodney A.Tissue, the engineer of Hagerstown City, said that the depth of the lake may decrease to 6 inches, which its original depth up to 7 feet.

The contract of dredging granted by Hagerstown City is more than $1 million.

The news is collated by Globaldredge.com – Dredging Pipeline Supplier.