CPESC Water Quality Standards 2

Question 1

Under the Clean Water Act, which section specifically establishes the NPDES permit program for point source discharges?

Accepted Answer

Section 402

Answer

Section 402 of the Clean Water Act establishes the National Pollutant Discharge Elimination System (NPDES) permit program regulating point source discharges.

Question 2

What term describes the maximum amount of a pollutant a water body can receive while still meeting water quality standards?

Accepted Answer

Total Maximum Daily Load (TMDL)

Answer

A Total Maximum Daily Load (TMDL) is the calculated maximum amount of a pollutant that a waterbody can receive daily while still meeting water quality standards.

Question 3

Which parameter is most commonly used to assess the oxygen demand of organic matter in stormwater runoff?

Accepted Answer

Biochemical Oxygen Demand (BOD)

Answer

Biochemical Oxygen Demand (BOD) measures the amount of oxygen consumed by biological processes breaking down organic matter, indicating organic pollution levels.

Question 4

A construction site discharges sediment-laden water with a turbidity of 500 NTU into a receiving stream. The in-stream standard is 50 NTU. Which regulatory action is most likely?

Accepted Answer

Notice of Violation and required corrective action

Answer

Exceeding in-stream turbidity standards typically results in a Notice of Violation requiring immediate corrective action to bring discharge into compliance.

Question 5

What is the primary purpose of antidegradation policy in water quality standards?

Accepted Answer

To protect existing water quality and uses from further deterioration

Answer

Antidegradation policy protects existing water quality and designated uses, preventing degradation of waters that already meet standards.

(CPESC) Certified Professional in Erosion and Sediment Control Practice Test

(CPESC) Certified Professional in Erosion and Sediment Control Practice Test

CPESC Water Quality Standards 2