What should be achieved to receive credits for storm water management?

Implementing a vegetated roof system is a highly effective strategy for managing stormwater and can contribute significantly to achieving credits in LEED certification. Vegetated roofs, also known as green roofs, help to reduce the quantity and speed of stormwater runoff by absorbing rainwater, which mitigates flooding and improves water quality. These systems support the growth of plants that retain moisture, thereby reducing the volume of water that enters the drainage system during rain events. Additionally, vegetated roofs can cool the building, enhance air quality, and promote biodiversity by providing habitat for various species.

The other options do not contribute positively to stormwater management. Increasing impervious surface areas, installing more paved areas, and using conventional drainage systems only can exacerbate stormwater runoff issues, leading to increased erosion, flooding, and water pollution. Therefore, adopting a vegetated roof system not only aligns with sustainable practices but also fulfills the criteria necessary for gaining credits in stormwater management under LEED guidelines.