Final Cover And Surface Water Controls

The final cover creates a relatively impermeable barrier over the fill area which keeps rainwater from entering. The slope, soil type, and vegetation determine the surface water run-off characteristics of the site. Planners can determine run-off quantities and peak flows using standard hy-drologic run-off techniques, such as the rational method or TR 55. The control of surface run-off generally requires berms to be constructed around the fill area, but drainage ditches can also be used. A detention pond is generally required as well.

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