What strategy to control and reduce stormwater runoff will hold water and reduce

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试卷: LEED GA模拟题A[查看]
What strategy to control and reduce stormwater runoff will hold water and reduce the rate of runoff?
A: Install pervious pavement
B: Reduce the size of the building footprint
C: Increase the area of permeable surfaces
D: Direct runoff into dry ponds

参考答案: D

本题解释:
Pervious pavement is designed to allow percolation or infiltration of stormwater through the surface into the soil below where the water is naturally filtered and pollutants are removed. This would reduce the rate but not hold any water;Reducing the building footprint will reduce impervious surfaces. This reduces the rate but does not hold water;Increasing permeable surfaces reduces the rate of runoff but this strategy does not retain the water;A dry pond (detention pond) is used to store excess stormwater. Dry ponds are basins whose outlets have been designed to detain stormwater runoff for some minimum time (e.g., 24 hours). The stormwater will slowly seep into the ground to recharge aquifers or discharge as determined by the pond design to allow pollutants to settle. Unlike wet ponds, these facilities do not have a large permanent pool of water.