CSM Best Management Practices (BMPs) & Design

Question 1

What are Best Management Practices (BMPs)?

Accepted Answer

Controls to reduce pollution in stormwater

Answer

Best Management Practices (BMPs) are techniques or structural controls designed to prevent or reduce the discharge of pollutants into stormwater runoff. Their primary goal is to minimize the environmental impact of development and human activities on water quality. By implementing BMPs, organizations can effectively manage stormwater and comply with environmental regulations.

Question 2

Why are BMPs important in site design?

Accepted Answer

To protect water quality and reduce runoff

Answer

BMPs are crucial in site design because they are engineered to protect natural water bodies from pollution and control the volume of stormwater runoff. By integrating BMPs early in the design phase, sites can effectively manage rainfall, reduce erosion, and filter pollutants before they reach rivers, lakes, or groundwater. This proactive approach safeguards aquatic ecosystems and ensures compliance with environmental standards.

Question 3

Which BMP reduces erosion on slopes?

Accepted Answer

Silt fences and erosion blankets

Answer

Silt fences and erosion blankets are effective BMPs for reducing erosion on slopes. Silt fences are temporary barriers that slow down runoff, allowing sediment to settle out before leaving the site. Erosion blankets, often made of natural fibers, cover exposed soil on slopes to protect it from the impact of rain and wind, stabilizing the soil and promoting vegetation growth.

Question 4

What is the purpose of a detention basin?

Accepted Answer

To slowly release stormwater and reduce flooding

Answer

The purpose of a detention basin is to temporarily store stormwater runoff during and after a storm event. It is designed to slowly release this water at a controlled rate into downstream channels or storm sewer systems. This controlled release helps to reduce peak flows, thereby mitigating the risk of flooding and erosion downstream.

Question 5

What is a vegetative BMP example?

Accepted Answer

Grassed swales and rain gardens

Answer

Grassed swales and rain gardens are excellent examples of vegetative BMPs. These systems utilize plants and engineered soil media to filter pollutants, absorb stormwater, and promote infiltration into the ground. They mimic natural processes to manage runoff, enhance water quality, and often provide aesthetic and habitat benefits.

(CSM) Certified Stormwater Manager Practice Test

(CSM) Certified Stormwater Manager Practice Test

CSM Best Management Practices (BMPs) & Design