Erosion and Sediment Control Questions With Complete Solutions

Minimum Standard 1 correct answer: Stabilization permanent or temporary soil stabilization shall be applied to denuded areas within seven days after final grade is reached on any portion of the site; temporary soil stabilization shall be applied within seven days to denuded areas that may not be at final grade but will remain dormant for longer than 14 days; permanent stabilization shall be applied to areas that are to be left dormant for more than one year Site NOT at Final Grade correct answer: - stabilize in 14 days - temporarily seed - mulch - permanently stabilize if dormant 1 year Site at Final Grade correct answer: - stabilize in 7 days (recommended immediately) - permanently or temporarily seed and mulch - mulch/matting/straw Minimum Standard 2 correct answer: Stock Piles, Waste and Borrow Areas during construction, soil stock piles and borrow areas shall be stabilized or protected with sediment trapping measures mulch prevents erosion by protecting the surface from raindrop impact and silt fence intercepts and detains from disturbed areas Minimum Standard 3 correct answer: Permanent Vegetation permanent vegetation cover shall be established on denuded areas not otherwise permanently stabilized (permanent vegetation shall not be considered established until a ground cover is achieved that is uniform, mature enough to survive, and will inhibit erosion *there is no % associated with this*) reduce erosion and decrease sediment yield from disturbed area this is the standard used to verify that a site is ready for release of bonds or surety Minimum Standard 4 correct answer: First-Step Measures Sediment basins and traps, perimeter dikes, sediment barriers and other measures intended to trap sediment shall be constructed as a first step in any land-disturbing activity and shall be made functional before upslope land disturbance takes