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
For the NCEES PE Environmental exam, the Clean Air Act (CAA) National Ambient Air Quality Standards (NAAQS) regulate:
Answer: Six criteria pollutants including PM2.5, ozone, CO, NOx, SO₂, and lead
NAAQS establish primary and secondary standards for six criteria pollutants: PM2.5, PM10, ozone, CO, NO₂, SO₂, and lead.
In NCEES PE Environmental practice, the solid waste landfill liner system's primary function is to:
Answer: Prevent leachate migration into groundwater
Liner systems (clay + geomembrane) prevent leachate from contaminating underlying soil and groundwater.
On the NCEES PE Environmental exam, Darcy's Law for groundwater flow states that flow rate Q equals:
Answer: Q = KiA (hydraulic conductivity times hydraulic gradient times area)
Darcy's Law: Q = KiA, where K is hydraulic conductivity, i is the hydraulic gradient, and A is cross-sectional area.
In NCEES PE Environmental engineering, the log-removal credit for Cryptosporidium in drinking water treatment is governed by:
Answer: EPA Long Term 2 Enhanced Surface Water Treatment Rule (LT2ESWTR)
The LT2ESWTR requires utilities to provide additional treatment for Cryptosporidium based on source water monitoring results.
For the NCEES PE Environmental exam, the bioconcentration factor (BCF) for a contaminant in fish describes:
Answer: The ratio of contaminant concentration in the organism to that in water
BCF = Corganism/Cwater: a high BCF indicates a pollutant accumulates in organisms relative to its concentration in water.
On the NCEES PE Environmental exam, the activated sludge process in wastewater treatment achieves BOD removal primarily through:
Answer: Aerobic biological oxidation by suspended microorganisms
Activated sludge uses aerobic microorganisms in suspension to oxidize dissolved and colloidal organic matter, reducing BOD.
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