CESSWI Stormwater Runoff Management 4

Question 1

Which stormwater management approach focuses on managing runoff at or near its source to mimic predevelopment hydrology?

Accepted Answer

Low Impact Development (LID)

Answer

Low Impact Development (LID) uses distributed, small-scale practices to infiltrate, evapotranspire, and reuse stormwater close to where it falls, mimicking natural hydrology.

Question 2

A bioretention cell is designed to treat stormwater through which primary set of processes?

Accepted Answer

Filtration, adsorption, biological uptake, and infiltration

Answer

Bioretention cells treat runoff through physical filtration through engineered media, adsorption to soil particles, biological uptake by plants, and infiltration into native soils.

Question 3

Under what condition should a CESSWI inspector recommend immediate corrective action for a stormwater BMP?

Accepted Answer

When BMP failure poses an imminent threat to water quality or public safety

Answer

Immediate corrective action is warranted when a BMP failure poses an imminent threat to water quality, downstream flooding, or public safety, regardless of maintenance schedules.

Question 4

Which design element of a wet detention pond is specifically intended to increase sediment removal efficiency?

Accepted Answer

Forebay at the inlet

Answer

A forebay is a pre-settling chamber at the pond inlet that captures coarse sediment before it reaches the main pool, reducing maintenance frequency and improving overall efficiency.

Question 5

What is the primary regulatory driver for municipalities to develop Stormwater Management Programs (SWMPs) under the MS4 program?

Accepted Answer

NPDES Phase I and Phase II regulations under the Clean Water Act

Answer

MS4 stormwater programs are required under NPDES Phase I (large/medium municipalities) and Phase II (small municipalities) regulations promulgated under the Clean Water Act.

(CESSWI) Certified Erosion, Sediment, and Storm Water Inspector Practice Test

(CESSWI) Certified Erosion, Sediment, and Storm Water Inspector Practice Test

CESSWI Stormwater Runoff Management 4