Question

how does a structural filtration system work to prevent stormwater runoff at a marina? it provides a conduit channels stormwater runoff into the water environment. it creates a vacuum to collect pollutants before they reach the water. it uses vegetation or sand strips near the water it impounds runoff to control its flow rate and velocity.

Explanation:

Structural filtration systems at marinas often use natural - like elements such as vegetation or sand strips near the water to filter stormwater runoff. These act as a natural barrier to trap pollutants and slow down the runoff. Providing a conduit to channel runoff into the water environment does not prevent runoff pollution. Creating a vacuum is not a typical method for such systems. Impounding runoff is more about flow control rather than filtration.

Answer:

It uses vegetation or sand strips near the water