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CPESC AU PRACTICE Questions and Correct Answers Latest Update.

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  • October 26, 2024
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  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • CPESC
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CPESC AU PRACTICE Questions and Correct Answers |
Latest Update

Most plants are useful for erosion control, but some are more desirable than others due to: - (correct answer) -adaptability
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to physical and climatic site conditions
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For a given amount of water, which has the more kinetic energy - (correct answer) -rainfall at 100mm/hr (more than water
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running off in rills)
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The definition for hydraulic radius is - (correct answer) -the ratio of a cross-sectional area to the corresponding wetted
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perimeter
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a factor that can afffect stormwater runoff volume is - (correct answer) -the hydrolic soil group
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when specifying a legume in a seed mixture for revegetation one should - (correct answer) -specify the legume inoculation
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rate
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which one of the following sediment basin shapes has the greatest potential for being most effective in removing
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suspended particles for a coarse grained soil: - (correct answer) -a rectangular basin having a length :width ration = 8:1
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The collar on the underground portion of the discharge pipe in a sediment basin is - (correct answer) -to control seepage
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along the pipe
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to avoid soil erosion, all sites should be turfed as soon as work is completed T/F - (correct answer) -F
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Poly aluminum chloride coagulants are suitable for use in acidic receiving environments T/F - (correct answer) -F
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Hay bales are preferred over straw bales because they are more readily available and are more tightly packed T/F -
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(correct answer) -F
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sediment yield - (correct answer) -doesn't include what has already been deposited
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RUSLE calculates what types of erosion - (correct answer) -sheet and rill
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gross erosion - (correct answer) -sheet, rill, and other erosion
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gr - (correct answer) -gravel
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slope = - (correct answer) -rise/run
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straw - (correct answer) -better than hay because no seed or nutrients
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saltation example - (correct answer) -dust behind truck will fall back down quickly
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Wind erosion-stockpiles e=1.7(s/1.5)(365-p)/235(f/15): e= - (correct answer) -total suspended particulates lb./day/acre
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Wind erosion-stockpiles e=1.7(s/1.5)(365-p)/235(f/15): s= - (correct answer) -silt content, percent
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Wind erosion-stockpiles e=1.7(s/1.5)(365-p)/235(f/15): p= - (correct answer) -# of days per year with >or= .01" rainfall
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Wind erosion-stockpiles e=1.7(s/1.5)(365-p)/235(f/15): f= - (correct answer) -percent time with wind speed > 12 mph at
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mean pile height
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antecedent moister - (correct answer) -moister already in the soil, affects runoff
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time parameters - (correct answer) -24 hr storm 2, 10 or 100-check juristriction
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