CEPSCI Water Quality Monitoring and Testing 3

Question 1

Which of the following best describes a 'qualified person' authorized to conduct stormwater monitoring under most NPDES construction general permits?

Accepted Answer

Someone with site-specific knowledge and training in BMP installation and stormwater monitoring

Answer

Most CGPs define a qualified person as someone knowledgeable about BMPs and stormwater management who has received relevant training — not necessarily a licensed PE.

Question 2

What is the primary reason sediment-laden stormwater discharge is harmful to aquatic ecosystems?

Accepted Answer

It smothers benthic organisms, reduces light penetration, and clogs fish gills

Answer

Excess sediment in water bodies smothers bottom-dwelling organisms, reduces light available for aquatic plants, and can physically damage the gill tissues of fish.

Question 3

A turbidity reading taken downstream of a construction site is 180 NTU, while the upstream background reading is 160 NTU. What is the most appropriate conclusion?

Accepted Answer

Background conditions are driving turbidity; the site contribution is minor but should still be documented

Answer

When the downstream reading is only slightly above background, it suggests high natural turbidity with a small site contribution; the finding should be documented and BMPs reviewed if the trend continues.

Question 4

Under the Clean Water Act, a Section 303(d) list identifies:

Accepted Answer

Water bodies that do not meet water quality standards and require a TMDL

Answer

Section 303(d) requires states to identify impaired water bodies that fail to meet water quality standards, which then require development of a Total Maximum Daily Load (TMDL).

Question 5

What is the primary purpose of a Total Maximum Daily Load (TMDL) for sediment in a receiving water body near a construction site?

Accepted Answer

To allocate allowable sediment loads among all pollution sources to meet water quality standards

Answer

A TMDL establishes the maximum amount of a pollutant a water body can receive while still meeting water quality standards and allocates that load among point and nonpoint sources.

CEPSCI - Certified Erosion Prevention and Sediment Control Inspector Practice Test

CEPSCI - Certified Erosion Prevention and Sediment Control Inspector Practice Test

CEPSCI Water Quality Monitoring and Testing 3