marine dredging Articles

  • Dredging the Hudson River

    Dredging the Hudson River SRS Crisafulli follows the activities of our larger corporate cousins tackling tough environmental remediation dredging projects.  One of the toughest is the Hudson River EPA PCB GE cleanup. Watch ...


    By SRS Crisafulli, Inc.

  • Bioremediation Technologies for Marine Sediments

      USA – Baltic International Symposium on Advances in Marine Environmental Research, Monitoring and Technologies. Klaipeda, Lithuania. June 15-17, 2004 Global commerce relies heavily on waterborne transportation. Innovative, economical and environmentally sound ways to manage ...


  • How Marinas Benefit From Scheduled Dredging

    Scheduled dredging enables marina owners to increase their profits and minimize their environmental impact. The purpose of this article is to highlight the importance and value of scheduled dredging for marinas. Maintaining adequate water depths in each boat slip and on approaches to marinas at low tide is essential to attract and keep the largest yachts in the regional ...


    By SRS Crisafulli, Inc.

  • Water Quality Risk Assessment for Dredging Operations, Plymouth Sound, UK

    ABSTRACTAs part of a formal Environmental Impact Assessment for a port development project in Plymouth Sound, UK, the potential risk of a deterioration in water quality from capital dredging was informed by the application of a probabilistic risk approach. In the absence of UK statutory sediment quality guidelines (SQGs) to assess acceptability of dredging operations, non-statutory guidelines are ...


    By Oracle Crystal Ball GBU

  • Coupling vermiremediation with phytoremediation technology to enhance the efficiency of reclamation of polluted marine sediments

    Contaminated (TPHs and heavy metals) dredged sediments from Livorno port (Italy) were biological treated using plants and earthworms. Sediments presented an asphyctic physical structure owing to the silt?clay granulometric composition, a high salty level and a low organic content. A meso-scale experiment was done utilising three different bioremediation treatments: a) plants (Paspalum vaginatum ...


    By Inderscience Publishers

  • Dragflow, environmental-proof technologies. Beyond business for love of the Earth.

    Dragflow chooses to soften the environmental impact with advanced technologies for dredging optimization and naturalistic protection. High performances imply  a specific attention towards ecosystems where the operations are carried, since they often are fragile and easy to jeopardize. That’s why Dragflow conceived technical solutions like the anti-turbidity bell: designed to preserve ...


    By Dragflow S.r.l.

  • Editorial

    While the papers included in this issue cover many aspects of marine development and are introuduced in this Editorial, there are some contextual aspects that have not been fully examined. The remainder of the Editorial highlights nine background industries and issues that are pertinent to the topic of the special issue.Keywords: EU maritime policy, marine policy, European Union, dredging, ...


    By Inderscience Publishers

  • Piedroba Dewaters Slurry, Returns Clean Water to Holmes Beach Canals

    This project was a successful application of a total cleaning system (TCS), where the particular type of solids of the sediments permitted the dredger to avoid the costly construction of a dredged material maintenance area (DMMA), or the transportation and tipping fees for a municipal landfill. The surface waters were cleaned in tandem, and contributed to a higher quality benthic environment in ...

  • Geotube Dewatering Technology Unclogs Queen’s Creek and the Queens Lake Marina Waterways - Case Study

    Dredging contractor uses cost effective and innovative dewatenng technology to contain and dewater marine sediments. A build-up of organics, sediments, very fine silt and clay created a major navigational problem for members of the Queens Lake Marina Association, in York County, VA. A contract was issued to dredge and dewater sediments in the boat slips and outside the enclosed slip area. Site ...

  • Case Study - Panama Canal: Boat Towed 3D Resistivity Surveys

    77 km Long 3D Canal Floor Sediment/Rock Study for Dredging Estimates Boat towed streaming dipole-dipole resistivity data were successfully used to estimate geotechnical properties of the canal floor in order to reduce dredging costs for an ongoing Panama Canal expansion program. Site:  The 77-km long Panama Canal with 773 line-km of resistivity data collected at 25 m transect spacing ...


    By Advanced Geosciences, Inc.

  • Geotube Dewatering Technology A Key Component In Hylebos Waterway Cleanup - Case Study

    The Hylebos Waterway was named after a 19th century priest who served parishes in Tacoma and Steliacoom, WA. For years, however, the name was associated with one of the largest Superfund sites in the nation. The Hylebos Waterway contains a toxic layer of sediment contaminated with PCBs, PAHs, arsenic, hexachlorobenzene, hexachloro-butadiene, and other organics and metals. The contamination comes ...

  • Remedial strategy at superfund site calls for organophylic clay sediment cap case study

    Project: Port of Portland Nearshore Cap Location: Portland. OR Products: Bulk Organoclay Background: U.S. EPA and the Port of Portland signed a legal agreement to assess and clean up contaminated river sediment at the Port's marine Terminal 4. This agreement authorizes the first early action cleanup project in the Portland ...


    By CETCO

  • Mapping sediment thickness case study

    Polk County, Florida Bathymetric and sub-bottom surveys were conducted within a clay settling pond at a Phosphate mine in Central Florida. Prior to the geophysical survey, a depression or slump had formed along the northern dam of the pond. The purpose of the study was to map various sediment layers within the pond to help determine if the depressions or slumps were related to sinkhole ...


    By GeoView, Inc.

  • Dewatering Paper Mill Lagoon Sludge - Ancram, NY - Case Study

    Sludge from the secondary treatment system lagoon at the New York mill of Schweitzer-Mauduit International, Inc. had to be removed. Geotube technology with SmartFeed Chemical Conditioning System supporting technology was the most cost-effective and  efficient method  of containing  and dewatering the sludge. The dredging contractor removed 3,285 cubic yards of sludge from the ...

  • Gabion Mattress Deployment at Former Manufactured Gas Plant Site

    PROJECT: Island End River Sediment Cap LOCATION: Boston, MA RCM SQUARE FT: 35,000 ORGANOCLAY: 135,000 lbs CONTRACTOR: Sevenson Environmental Services, Inc. DESIGN CONSULTANT: Arcadis PRODUCTS: ORGANOCLAY®, REACTIVE CORE MAT®, TRITON® Marine Mattress ...


    By CETCO

  • Boston Third Harbor Tunnel - Odor and Vector Control

    Products & Equipment Used: Pneumatic Foam Unit 1600/40 AC-912 Long Duration Foam Application Summary: The joint venture of Bechtel National-Parsons Brinckerhoff required an odor emission suppressant during the dredging phase of the Boston Third Harbor Tunnel Construction Project. A landfill cell had been constructed on Logan Airport ...


    By Rusmar Inc.

  • Gabion mattress deployment at former manufacutured gas plant site case study

    Project: Island End River Sediment Cap Location: Boston, MA Products: Organoclay Reactive Core Mat? Triton Marine Mattresses Background: The project is situated on a former manufactured gas plant (MGP) site located adjacent to the Boston Harbor. Previous remedial work included dredge and disposal in CAD cell and cap. ...


    By CETCO

  • Upgrading NY-NJ Harbor: risks and challenges

    New York-New Jersey Harbor is an economic engine for the east coast of the USA, providing efficient and cost-effective processing of imported and exported goods. Markets for these goods extend throughout New York, New Jersey, New England, and Canada, involving intermodal transportation systems (rail, highway, air) from the harbour to these markets. As a result of a Panama Canal project scheduled ...


    By Inderscience Publishers

  • Fountain creek sediment collector - case study

    An innovative sediment management method, a 30-ft wide, high capacity, Sediment Collector, is currently installed in Fountain Creek, Pueblo, Colorado upstream of the confluence with the Arkansas River.  This installation is intended to demonstrate a new technology available to reduce the need for dredging.  The purpose of the Sediment Collector is to demonstrate the capability to lower ...


    By Streamside, LLC.

  • Geotube Dewatering Technology Provides Expertise in the Clean-Up of Contaminated Sediments - Case Study

    Geotube units offer an effective solution for contaminated sites to manage the recovery and containment of PCBs, heavy metals, BTEX, PAHs, PACs, and other hazardous materials. Contaminated sediments are a common problem for communities and industries around the world. Past spills, leaks, discharges, and improper disposal or management of hazardous materials and wastes often result in ...

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