dredge monitoring News
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Sequoia Scientific, Inc., Ocean Instruments, and Geometius Deliver Sediment Dredging Measurement System
Sequoia Scientific, Inc. (Bellevue, WA), Ocean Instruments (Fall City, WA), and Sequoia’s Dutch distributor, Geometius, have delivered a Fast Oceanographic Automated Measurement (FOAM) system for dredge monitoring. The FOAM system is composed of a pump and winch with a fluid rotary joint, 100 m hybrid cable with hose and conductors, a tow sled with an RBR CTD and a Sequoia LISST-ABS, and a ...
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SediMeters Can Save Corals from Dredging Spill
The ongoing dredging of Miami Harbor has caused siltation (the accumulation of sediments) on the coral reefs outside the harbor. In a settlement of a recent lawsuit, the contractor, U.S. Army Corps of Engineers (USACE), has agreed to pay $400,000 for moving corals out of the way. They are not using any instrument for measuring the sediment accumulation, even though such an instrument exists, is ...
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Two New Spill Monitoring Projects Using the SediMeter™
In the summer of 2018, the newest SediMeter™ was deployed in two dredging projects to monitor sedimentation and near-bed turbidity on sensitive bottoms near the work zone. In each case, three instruments were deployed in the area of concern, and a fourth instrument was deployed as a reference station in a similar environment but removed from the impact. One of the sites is in Canada, the ...
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GE Completes Hudson River Dredging
GE [NYSE: GE] today (Oct 2, 2015) announced it has completed dredging in New York’s Upper Hudson River. Since 2009, GE has removed the majority of PCBs from the Upper Hudson River in one of the largest and most successful environmental cleanup projects ever undertaken in the United States. The U.S. Environmental Protection Agency (EPA) has called the project an historic achievement that ...
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EPA Issues Clean Water Act Permit for Small Suction Dredge Miners in Idaho
Starting today, small-scale suction dredge miners may begin applying for a new federal water discharge permit to lawfully operate their dredges in Idaho’s rivers lakes and streams.Mining for gold using small suction dredges is a popular activity in Idaho with hundreds of dredges in use, especially during the summer. Small-scale suction dredge miners (using intake nozzles of five inches in ...
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Impact of one-off dredging deposits important for licensing
New insights into the impact of dredging on the environment highlight the distinction between small, frequent deposits of sediments arising from maintenance dredging, and larger one-off capital deposits. Understanding this distinction is crucial for effective licensing and monitoring of dredging. When sediment is removed from the bottom of a body of water and deposited elsewhere, as in ...
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Port of Stockton Settles With Environmentalists Over Expansion
STOCKTON, California, September 4, 2007 (ENS) - Stockton residents, environmentalists and Port of Stockton officials have settled three years of legal battles over new commercial shipping and hundreds of acres of industrial development at the former naval base of Rough and Ready Island. Under the settlement announced Wednesday, the plaintiffs dismissed the last of their lawsuits and the port ...
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Innovative dredging technology accelerates removal of residual contamination in Ashtabula River
The US EPA's Great Lakes National Program Office (GLNPO) and their non-federal sponsor, the Ashtabula City Port Authority, along with the State of Ohio, the U.S. Army Corps of Engineers (USACE), and a consortium of private companies collaborated to design and implement an innovative approach for addressing extensive sediment contamination in a portion of the Ashtabula River near Lake Erie. The ...
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EPA Releases Plan to Address PCB Contamination in the Grasse River in Massena, New York; Public Urged to Submit Comments No Later Than November 15
The U.S. Environmental Protection Agency has proposed a plan to clean up contaminated river sediment at the Grasse River Superfund site in Massena, New York. Past industrial activities have contaminated the river sediment with polychlorinated biphenyls (PCBs), which are potentially cancer-causing chemicals that build up in the food chain and accumulate in the fatty tissue of fish and mammals. The ...
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EPA announces expo and public meeting on Marshall, Mich. oil spill (MI)
Environmental Protection Agency Region 5, joined by its government partners for the Enbridge oil spill response, will hold an expo and public meeting Nov. 8 in Battle Creek, Mich., to update residents on the status of the cleanup and the long-term role of EPA. EPA is the federal On-Scene Coordinator for this incident. EPA will outline response activities that have been completed along with areas ...
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Another Successful Year of Hudson River Cleanup Draws to a Close; One More Year of Dredging Expected
The U.S. Environmental Protection Agency announced that next week the Hudson River dredging will conclude for the year. Dredging is expected to continue in spring 2015. To date, about 2.5 million cubic yards of sediment contaminated with polychlorinated biphenyls (PCBs) have been removed. In 2014 approximately 575,000 cubic yards of PCB-contaminated sediment were dredged from the bottom of the ...
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Dragflow, more efficiency and reliably with the new line of advanced electric control panel
Dredging professionals will now have the opportunity to improve efficiency and reliably throughout their activities with the launch of the new line of advanced electric control panel by Dragflow. The new product allows real time and historical monitoring of pumps and dredging equipment: with Dragflow's control panel remote engineers can control working operations, their parameters and inspect ...
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Water quality protected during dredging of Somerset Levels
A special monitoring system is helping protect water quality on the Somerset Levels and Moors where a major dredging operation is under way following severe flooding. The system, which was supplied by OTT Hydrometry and installed by Wavelength Environmental, is designed to protect the river ecology by issuing email alerts if water quality deteriorates beyond pre-set conditions. Any such alerts ...
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39-mile dredging/capping approach used to treat fox river PCBsd
The Lower Fox River in Wisconsin contains approximately 8 million yd3 of PCB-contaminated sediment targeted for active remediation. The site's records of decision (RODs) were amended in 2007 and 2008 to specify dredging of nearly 4 million yd3 of sediment with high concentrations of PCBs, followed by in situ capping of approximately 560 acres of sediment comprising operable units (OUs) 1 through ...
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EPA Completes Fourth Season of Hudson River Dredging; Project Now about 73% Complete with GE, Not Taxpayers, Paying the Full Cost of Cleanup; $2 Billion Dredging Project Continues to Create Local Jobs
The U.S. Environmental Protection Agency today announced that more than 612,000 cubic yards of river bottom sediment contaminated with PCBs were removed from the upper Hudson River during 2013, exceeding the annual goal of 350,000 cubic yards for this historic dredging project. This is similar to the amount dredged in 2012 when more than 650,000 cubic yards were removed. The Superfund cleanup ...
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Fourth Season of Dredging Begins in Upper Hudson; Project Expected to Reach Halfway Point during Fourth Season
U.S. Environmental Protection Agency Regional Administrator Judith A. Enck was joined by New York State Department of Environmental Conservation Deputy Commissioner Eugene Leff today to kick off the start of the fourth season of dredging in the Upper Hudson River. Portions of the Upper Hudson are being dredged to remove sediment contaminated with polychlorinated biphenyls (PCBs), which are ...
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AquaBlok is selected for New, Large-Scale Demonstration of In-Situ Treatment of Contaminated Sediments in Active DoD Harbors
AquaBlok, Ltd., a leading manufacturer of composite particle materials for environmental remediation, has developed a new product for in-situ treatment and remediation of contaminated sediments. The new technology represents an improvement over costly remediation methods like dredging and conventional capping that can damage existing ecosystems. The company has developed a new in-situ reactive ...
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Dredging of Toxics Resumes in Upper Hudson River for Fifth Season; PCB Cleanup Designed to Restore Hudson River; Created Hundreds of New Jobs
The U.S. Environmental Protection Agency announced that dredging operations are expected to resume on Wednesday in the Upper Hudson River. In 2014, dredging will begin south of Schuylerville, New York and proceed south towards Troy. Dredging will also occur in a two-mile section of river near Fort Miller that is not easily accessed by boat. Dredging is being conducted to remove sediment from the ...
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EPA to Remove Mercury from Bottom of Pompton Lake in Pompton Lakes, New Jersey
The U.S. Environmental Protection Agency today announced its plan to remove mercury contamination from the sediment of the Acid Brook Delta of Pompton Lake in Pompton Lakes, New Jersey to levels that meet stringent standards to protect people’s health and the environment. The plan will go into effect as a modification of a permit, which legally requires the E.I. du Pont de Nemours & ...
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Sixth Season of Hudson River Dredging Begins; Historic Dredging Project Draws to a Close; Next Up: Cleaning Up Floodplains
Today, U.S. Environmental Protection Agency Regional Administrator Judith A. Enck announced the start of the sixth, and final, season of dredging of PCB-contaminated sediments from the bottom of the Hudson River. The historic dredging project – one of the largest and most complex cleanups in Superfund history – began in 2009. The EPA is overseeing the dredging project that is being ...
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