CES Pollution Control & Waste Management 2

Question 1

Under the Clean Air Act, which pollutant is classified as a 'criteria pollutant' and has a National Ambient Air Quality Standard (NAAQS)?

Accepted Answer

Lead

Answer

Lead is one of six criteria pollutants regulated under NAAQS, along with ozone, particulate matter, CO, SO2, and NO2.

Question 2

Which wastewater treatment process uses microorganisms attached to a rotating disk to biologically degrade organic matter?

Accepted Answer

Rotating biological contactor (RBC)

Answer

A rotating biological contactor uses biofilm on rotating discs partially submerged in wastewater to treat organic pollutants.

Question 3

What is the primary regulatory framework governing the cleanup of contaminated brownfield sites in the United States?

Accepted Answer

CERCLA (Superfund)

Answer

CERCLA (Comprehensive Environmental Response, Compensation, and Liability Act) establishes the Superfund program for remediating hazardous waste sites.

Question 4

Which air pollution control device uses electrical charges to remove particulate matter from industrial exhaust streams?

Accepted Answer

Electrostatic precipitator (ESP)

Answer

Electrostatic precipitators charge particles and collect them on oppositely charged plates, achieving very high efficiency for fine particulates.

Question 5

In a municipal solid waste landfill, what is the purpose of a leachate collection system?

Accepted Answer

To prevent groundwater contamination by collecting liquid that percolates through waste

Answer

Leachate collection systems capture contaminated liquid draining through landfill waste to prevent it from reaching groundwater.

(CES) Certified Environmental Scientist Practice Test

(CES) Certified Environmental Scientist Practice Test

CES Pollution Control & Waste Management 2