CESSWI Site Inspection Procedures 4

Question 1

Which condition would cause an inspector to classify a sediment basin as non-functional?

Accepted Answer

Sediment accumulation reaching one-third of the basin's design storage capacity

Answer

Most design standards require sediment basins to be cleaned when sediment accumulates to one-third of the design storage volume to maintain treatment capacity.

Question 2

What documentation must be retained on-site or made available during a regulatory inspection under the EPA CGP?

Accepted Answer

The SWPPP, all inspection reports, and records of corrective actions

Answer

The CGP requires that the SWPPP, all inspection reports, and corrective action records be retained and made available to regulators upon request.

Question 3

An inspector finds that a slope with disturbed soil has been left un-stabilized for 20 days without any temporary cover. The applicable CGP requires stabilization within 14 days. How should this be documented?

Accepted Answer

As a corrective action item with the number of days past the stabilization deadline noted

Answer

Exceeding the stabilization deadline is a permit violation that must be documented as a corrective action item, including the number of days the deadline has been exceeded.

Question 4

What is the purpose of a 'stabilized construction exit' at a site perimeter?

Accepted Answer

To remove sediment and mud from vehicle tires before they access public roadways

Answer

Stabilized exits use aggregate or other materials to dislodge and trap sediment from vehicle tires, preventing tracking of mud onto public roads.

Question 5

When evaluating the effectiveness of hydroseeding applied to a disturbed area, what is the minimum percent vegetative cover typically required before an area is considered 'finally stabilized'?

Accepted Answer

70% cover of native or non-invasive vegetation

Answer

The EPA CGP defines final stabilization as achieving 70% vegetative cover of native or non-invasive species over all disturbed areas.

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

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

CESSWI Site Inspection Procedures 4