Environmental Engineering Flashcards
6 cards from real NCEES 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 Engineering flashcards as text
In NCEES PE Environmental engineering, a hazardous waste is classified under RCRA if it exhibits which characteristic?
Answer: Ignitability, corrosivity, reactivity, or toxicity (ICRT)
RCRA defines characteristic hazardous wastes by four properties: ignitability, corrosivity, reactivity, and toxicity (TCLP test).
On the NCEES PE Environmental exam, the rational method for stormwater peak flow calculation is Q = CIA, where I represents:
Answer: Rainfall intensity for the design storm duration
In Q = CIA, I is the rainfall intensity (in/hr) for the selected storm return period and time of concentration.
For the NCEES PE Environmental exam, the Safe Drinking Water Act (SDWA) requires public water systems to treat surface water for which three categories of contaminants?
Answer: Microbials, disinfectants/byproducts, and inorganic/organic chemicals
SDWA surface water treatment rules target microbials (Giardia, Crypto, viruses), disinfection byproducts, and chemical contaminants.
In NCEES PE Environmental practice, the fate of volatile organic compounds (VOCs) in soil is primarily modeled using:
Answer: Henry's Law constant to describe air-water partitioning
Henry's Law constant describes VOC partitioning between water and air phases, governing volatilization from soil and groundwater.
On the NCEES PE Environmental exam, the ozone depletion potential (ODP) is used to evaluate:
Answer: The relative ability of a substance to destroy stratospheric ozone
ODP measures a substance's potential to destroy stratospheric ozone relative to CFC-11 (ODP = 1.0).
In NCEES PE Environmental engineering, the primary purpose of chlorination in drinking water treatment is to:
Answer: Disinfect pathogens and provide a residual for distribution system protection
Chlorination kills pathogens and maintains a disinfection residual throughout the distribution system to prevent recontamination.
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