Environmental Protection Agency provides oversight and authorization for the disposal of dredged materials. Army Corps of Engineers issues permits for the disposal of dredged material the U.S. The disposal of dredged material is managed and carried out by federal, state, and local governments, as well as by private entities such as port authorities. NOAA's Office of Response and Restoration plays a major role in protecting and restoring marine natural resources when environmental damage occurs. These pollutants are introduced to waterways from point sources such as sewer overflows, municipal and industrial discharges, and spills or may be introduced from nonpoint sources such as surface runoff and atmospheric deposition. using a boat or special device: They have to dredge the canal regularly to keep it open. This environmental dredging is often necessary because sediments in and around cities and industrial areas are frequently contaminated with a variety of pollutants. dredge verb T (REMOVE) to remove unwanted things from the bottom of a river, lake, etc. Standaert of Dredging International n.v. The development of the sweep dredge and the evaluation of its characteristics. Since massive ships carry the bulk of the goods imported into the country, dredging plays a vital role in the nation's economy.ĭredging is also performed to reduce the exposure of fish, wildlife, and people to contaminants and to prevent the spread of contaminants to other areas of the water body. the dredging operations and the various test and monitoring programmes. This water depth continues to increase over time as larger and larger ships are deployed. They dredged up ( brought to the surface) all sorts of rubbish from the bottom of the river. to search an area of water by dredging: The police are dredging the lake for his body. ![]() Vessels require a certain amount of water in order to float and not touch bottom. to remove unwanted things from the bottom of a river, lake, etc. ![]() It is a routine necessity in waterways around the world because sedimentation-the natural process of sand and silt washing downstream-gradually fills channels and harbors.ĭredging often is focused on maintaining or increasing the depth of navigation channels, anchorages, or berthing areas to ensure the safe passage of boats and ships. Dredging is the removal of sediments and debris from the bottom of lakes, rivers, harbors, and other water bodies.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |