Environmental Compliance Inspector Water Quality Compliance Questions and Answers Flashcards
6 cards from real Environmental Compliance Inspector practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Environmental Compliance Inspector Water Quality Compliance Questions and Answers flashcards as text
Under the Clean Water Act, what is the primary purpose of a National Pollutant Discharge Elimination System (NPDES) permit?
Answer: To regulate point source discharges of pollutants into waters of the United States
NPDES permits regulate point source discharges into U.S. waters under Section 402 of the Clean Water Act.
What does the term 'mixing zone' refer to in water quality compliance?
Answer: An area near a discharge point where water quality standards may be exceeded
A mixing zone is a limited area near a discharge point where dilution occurs and numeric water quality criteria may be exceeded.
Which parameter is most commonly used to measure the oxygen-demanding strength of wastewater?
Answer: Biochemical Oxygen Demand (BOD)
BOD measures the amount of dissolved oxygen consumed by microorganisms to decompose organic matter in wastewater over a standard five-day period.
During a compliance inspection, an inspector discovers a facility is discharging above its permitted daily maximum limit for total suspended solids. What is this classified as?
Answer: An effluent limit exceedance
Exceeding a permitted daily maximum for any parameter constitutes an effluent limit exceedance, which is a direct permit violation.
What is the purpose of a Discharge Monitoring Report (DMR) submitted by a permitted facility?
Answer: To document self-monitored effluent data and demonstrate compliance with permit limits
DMRs are periodic reports where permittees document their self-monitoring results to demonstrate compliance with NPDES permit effluent limits.
Which of the following best describes a Total Maximum Daily Load (TMDL)?
Answer: A calculation of the maximum amount of a pollutant a water body can receive and still meet water quality standards
A TMDL establishes the maximum amount of a specific pollutant that a water body can assimilate while still meeting applicable water quality standards.