CEPSCI Construction Site BMPs and Implementation 3

Question 1

Erosion control blankets (ECBs) are primarily used to:

Accepted Answer

Protect seeded slopes from rainfall impact and erosion until vegetation is established

Answer

ECBs provide physical protection of seeded soil from rainfall impact and surface runoff while vegetation germinates and establishes, after which the blanket may degrade or be removed.

Question 2

What is the minimum recommended maintenance interval for silt fences under the US NPDES CGP?

Accepted Answer

At least every 7 business days and within 24 hours after a 0.25-inch or greater storm event

Answer

The NPDES Construction General Permit requires inspections at least every 7 business days and within 24 hours of qualifying rain events to ensure BMPs are functioning properly.

Question 3

What is the purpose of a 'slope drain' or 'temporary slope drain pipe'?

Accepted Answer

To convey concentrated runoff down a slope without causing erosion by protecting the slope surface from flow

Answer

Slope drains are pipes anchored to the slope surface that convey concentrated runoff from the top to the bottom of a slope without allowing the flow to contact and erode the slope face.

Question 4

Which of the following is an example of a 'good housekeeping' BMP on a construction site?

Accepted Answer

Properly storing and disposing of concrete washout water in a designated lined area

Answer

Good housekeeping practices manage materials, waste, and spills to prevent pollutants other than sediment — such as concrete, fuel, or paint — from reaching stormwater.

Question 5

When is it appropriate to use polyacrylamide (PAM) as an erosion control amendment?

Accepted Answer

As a soil amendment applied to disturbed soils to reduce erosion, typically in conjunction with seeding and mulching

Answer

PAM is an anionic polymer that binds soil particles together, reducing erosion and improving water quality when applied to disturbed soils along with other BMPs.

CEPSCI - Certified Erosion Prevention and Sediment Control Inspector Practice Test

CEPSCI - Certified Erosion Prevention and Sediment Control Inspector Practice Test

CEPSCI Construction Site BMPs and Implementation 3