NCEES Environmental Engineering 2

Question 1

For the NCEES PE Environmental exam, the Clean Air Act (CAA) National Ambient Air Quality Standards (NAAQS) regulate:

Accepted Answer

Six criteria pollutants including PM2.5, ozone, CO, NOx, SO₂, and lead

Answer

Greenhouse gas emissions from power plants only

Answer

Toxic air pollutants from hazardous waste sites

Answer

International transboundary air pollution agreements

Question 2

In NCEES PE Environmental practice, the solid waste landfill liner system's primary function is to:

Accepted Answer

Prevent leachate migration into groundwater

Answer

Compact waste to increase density

Answer

Capture landfill gas for energy recovery

Answer

Support heavy equipment during operations

Question 3

On the NCEES PE Environmental exam, Darcy's Law for groundwater flow states that flow rate Q equals:

Accepted Answer

Q = KiA (hydraulic conductivity times hydraulic gradient times area)

Answer

Q = nAv (porosity times area times velocity)

Answer

Q = ghi/n (gravity times head times gradient divided by porosity)

Answer

Q = T × S (transmissivity times storage coefficient)

Question 4

In NCEES PE Environmental engineering, the log-removal credit for Cryptosporidium in drinking water treatment is governed by:

Accepted Answer

EPA Long Term 2 Enhanced Surface Water Treatment Rule (LT2ESWTR)

Answer

Clean Water Act surface water treatment rule

Answer

RCRA hazardous waste regulations

Answer

CERCLA Superfund cleanup standards

Question 5

For the NCEES PE Environmental exam, the bioconcentration factor (BCF) for a contaminant in fish describes:

Accepted Answer

The ratio of contaminant concentration in the organism to that in water

Answer

The degradation rate of pollutants in sediment

Answer

The volatilization rate from water to air

Answer

The lethal dose concentration for aquatic organisms

Question 6

On the NCEES PE Environmental exam, the activated sludge process in wastewater treatment achieves BOD removal primarily through:

Accepted Answer

Aerobic biological oxidation by suspended microorganisms

Answer

UV disinfection of organic molecules

Answer

Chemical coagulation and sedimentation

Answer

Anaerobic digestion in open lagoons