In some situations, sub-bottom profiler technology can be used to measure sediment depths through the muck to the original bottom of the pond. This method can take a higher number of measurements in a tighter grid pattern, on the bottom of the pond, in less time than traditional methods, yielding a more precise map of the existing pond bottom.

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The object ive and measure of effectiveness of the sediment pond and the Erosion and Sediment Control Plan will be in compliance with the mine effluent permit and protection of the environment. For the purpose of this document, a person is considered a Qualified Professional who in

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So, a pond that measures 150 feet long and 100 feet wide would have an area = 150 feet X 100 feet = 15,000 ft2 or 0.34 acres. Trapezoid. Many ponds may be roughly rectangular in shape, but one side may be significantly shorter than the other. The area of this shape is best estimated using a formula for a trapezoid by taking the average length ...

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30 Sediment capture ponds are most useful for managing the effects of ditch construction and maintenance, road work and final feeling. While used primarily in forests, sediment capture ponds may be a useful temporary measure for preserving water quality in and around construction sites or mines.

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Sediment Traps. A preventive measure may be to install sediment traps or settlement basins upstream from the pond. The sediment in the pond should be dug out on an as needed basis to prolong the life of the pond. Silt should not be removed until the volume of the pond has been greatly reduced.

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sediment basin to stormwater detention pond involves several important steps, usually consisting of dewatering, ... Erosion prevention and sediment control measures, including sediment basins, must be in place and functional before earth-moving operations begin, and must be ...

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Sediment Control BMPs – Sediment Basins ` ... Many construction sites will utilize a sediment basin as a detention pond after ... In each circumstance, measures must be taken to prevent short-circuiting of the sediment basin. Length and width measurements may be measured from top of

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Sediment capture ponds are most useful for managing the effects of ditch construction and maintenance, road work and final feeling. While used primarily in forests, sediment capture ponds may be a useful temporary measure for preserving water quality in and around construction sites or mines.

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The adequ acy of any channel erosion protection measures near the pond should also be investigated. Sediment accumulation in the pond (especially near, and in, the inlets and outlets) also needs to be examined. Large sediment accumulations in detention ponds can have significantly adverse affects on pond performance.

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Chapter 4C: Erosion and Sediment Control National Management Measures to Control Nonpoint Pollution from Agriculture 4-91 to crops, and are farmed around. Classic gullies are characterized by headward migration and enlargement through a combination of headcut erosion and gravitational slumping, as well as the tractive stress of concentrated flows.

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The main pond area also needs to have sediment accumulation monitoring and maintenance. This main pond area retains water for longer allowing finer sediments to settle out. The sediment forebay typically needs to be cleared every 5-10 years. This frequency varies with the different sizes of the ponds and depends on the findings of the sediment ...

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An example of preventative measures taken to reduce loss of capacity due to sedimentation can be found in the City of Burlington. When a new reservoir was impounded in 1961 to supply the city with water, twenty-six sedimentation ponds were installed to intercept runoff and catch sediment. As a result of their effectiveness, the city has invested in

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Module 6: Sediment Pond Project Example The following is an example showing the steps that should be taken when designing a sediment pond for a construction site. Example Sizing of Sediment Pond at Construction Site This example problem considers the sizing of all the major components of a sediment pond …

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Capacity testing (level 2) can be applied to sedimentation practices to estimate sediment storage capacity. All sedimentation practices can be assessed with sediment retention tests if adequate access is available. If repeat measurements are made over time, the sediment accumulation rate can be estimated. Dry ponds can also be assessed with ...

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A sediment basin is appropriate where physical site conditions or land ownership restrictions preclude the installation of other erosion control measures to adequately control runoff, erosion, and sedimentation. However, it is strongly encouraged to use a basin in addition to other ESC measures if practicable. It may be used below construction

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