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The CPL is primarily responsible for the cleanup efforts of the Red Butte Creek area. The company has expended approximately $26,886,000 as of July 31, 2011, on remediation efforts. [6] A huge concern of the cleanup effort was that it be done correctly. Removing oil can create a multitude of problems if it is not handled properly.
GE began sediment dredging operations to clean up the PCBs on May 15, 2009. [ 5 ] [ 34 ] This stage (Phase One) of the cleanup was completed in October 2009, and was responsible for the removal of approximately 300,000 cubic yards (230,000 m 3 ) of contaminated sediment, which was more than the targeted amount.
Check dams still require maintenance and sediment removal practices. They become more difficult to implement on steep slopes, as velocity is higher and the distance between dams must be shortened. [5] Check dams, depending on the material used, can have a limited life span but if implemented correctly can be considered permanent. [5]
Stream restoration activities may range from the simple improvement or removal of a structure that inhibits natural stream functions (e.g. repairing or replacing a culvert, [18] or removing barriers to fish passage such as weirs), to the stabilization of stream banks, or other interventions such as riparian zone restoration or the installation ...
A sediment control is a practice or device designed to keep eroded soil on a construction site, so that it does not wash off and cause water pollution to a nearby stream, river, lake, or sea. Sediment controls are usually employed together with erosion controls , which are designed to prevent or minimize erosion and thus reduce the need for ...
Bridge scour is the removal of sediment such as sand and gravel from around bridge abutments or piers. Hydrodynamic scour, caused by fast flowing water, can carve out scour holes, compromising the integrity of a structure. [1] In the United States, bridge scour is one of the three main causes of bridge failure (the others being collision and ...
Hydrodynamic scour is the removal of sediment such as silt, sand and gravel from around the base of obstructions to the flow in the sea, rivers and canals. Scour, caused by fast flowing water, can carve out scour holes, compromising the integrity of a structure.
A study of sediment removal found that prairie filter strips had a 96% sediment trapping efficiency over a 4-year period. [4] As with nitrogen and phosphorus reduction, the sediment trapping efficiency of a filter strip varies by a number of factors, including subsurface conditions, surface conditions, and sediment characteristics.