Certified Environmental Remediation Technician
Exam Practice Questions And Correct Answers
(Verified Answers) Plus Rationales 2026 Q&A |
Instant Download Pdf
1. What is the primary purpose of an environmental site assessment
(ESA)?
a) To install remediation equipment
b) To evaluate potential contamination **
c) To issue construction permits
d) To monitor air quality only
Rationale: An ESA is performed to identify the presence or potential
presence of hazardous substances on a property.
2. Which type of personal protective equipment (PPE) is typically
required when handling hazardous waste?
a) Safety glasses only
b) Gloves, respirator, and protective suit **
c) Hard hat only
d) Hearing protection only
Rationale: Handling hazardous waste often requires comprehensive PPE
to protect skin, lungs, and eyes.
3. What is the main function of a HEPA filter in environmental
remediation?
,a) Remove large debris
b) Filter out fine particulate matter **
c) Absorb chemical vapors
d) Neutralize acids
Rationale: HEPA filters are designed to capture very fine particles,
including asbestos, dust, and mold spores.
4. What does the term “remediation” mean in environmental science?
a) Assessing property value
b) Removing or mitigating environmental contaminants **
c) Surveying wildlife
d) Constructing new buildings
Rationale: Remediation involves reducing or eliminating environmental
hazards to protect health and the environment.
5. Which of the following is considered a common contaminant in soil
at brownfield sites?
a) Lead **
b) Sand
c) Limestone
d) Gravel
Rationale: Lead is often found at former industrial or residential sites,
particularly where paint or gasoline was used.
6. When working in a confined space, the first step is to:
,a) Start remediation immediately
b) Test the air for oxygen and toxic gases **
c) Remove all equipment
d) Spray disinfectant
Rationale: Confined spaces can have dangerous atmospheres; air
testing ensures worker safety before entry.
7. What is the purpose of a decontamination station on a remediation
site?
a) To store waste
b) To remove contaminants from personnel and equipment **
c) To measure air quality
d) To mix chemicals
Rationale: Decontamination prevents the spread of hazardous
substances off-site and protects workers.
8. Which chemical is commonly used for oxidizing organic
contaminants in soil and groundwater?
a) Sodium hydroxide
b) Hydrogen peroxide **
c) Sulfuric acid
d) Calcium carbonate
Rationale: Hydrogen peroxide is an oxidizing agent that can break down
organic pollutants through chemical reactions.
, 9. Which federal law governs the cleanup of contaminated sites in the
United States?
a) Clean Water Act
b) Resource Conservation and Recovery Act (RCRA)
c) Comprehensive Environmental Response, Compensation, and
Liability Act (CERCLA) **
d) Endangered Species Act
Rationale: CERCLA, also called Superfund, regulates the assessment and
cleanup of hazardous waste sites.
10. Which method is commonly used for soil vapor extraction?
a) Injecting water
b) Pulling vapors through a vacuum system **
c) Burning soil
d) Compaction
Rationale: Soil vapor extraction removes volatile contaminants from soil
by applying vacuum to pull vapors out.
11. Which type of sampling is most appropriate to determine the
extent of groundwater contamination?
a) Surface water grab sample
b) Monitoring well sampling **
c) Air sample
d) Soil core sample
Rationale: Monitoring wells provide data on groundwater
contamination at specific depths.
Exam Practice Questions And Correct Answers
(Verified Answers) Plus Rationales 2026 Q&A |
Instant Download Pdf
1. What is the primary purpose of an environmental site assessment
(ESA)?
a) To install remediation equipment
b) To evaluate potential contamination **
c) To issue construction permits
d) To monitor air quality only
Rationale: An ESA is performed to identify the presence or potential
presence of hazardous substances on a property.
2. Which type of personal protective equipment (PPE) is typically
required when handling hazardous waste?
a) Safety glasses only
b) Gloves, respirator, and protective suit **
c) Hard hat only
d) Hearing protection only
Rationale: Handling hazardous waste often requires comprehensive PPE
to protect skin, lungs, and eyes.
3. What is the main function of a HEPA filter in environmental
remediation?
,a) Remove large debris
b) Filter out fine particulate matter **
c) Absorb chemical vapors
d) Neutralize acids
Rationale: HEPA filters are designed to capture very fine particles,
including asbestos, dust, and mold spores.
4. What does the term “remediation” mean in environmental science?
a) Assessing property value
b) Removing or mitigating environmental contaminants **
c) Surveying wildlife
d) Constructing new buildings
Rationale: Remediation involves reducing or eliminating environmental
hazards to protect health and the environment.
5. Which of the following is considered a common contaminant in soil
at brownfield sites?
a) Lead **
b) Sand
c) Limestone
d) Gravel
Rationale: Lead is often found at former industrial or residential sites,
particularly where paint or gasoline was used.
6. When working in a confined space, the first step is to:
,a) Start remediation immediately
b) Test the air for oxygen and toxic gases **
c) Remove all equipment
d) Spray disinfectant
Rationale: Confined spaces can have dangerous atmospheres; air
testing ensures worker safety before entry.
7. What is the purpose of a decontamination station on a remediation
site?
a) To store waste
b) To remove contaminants from personnel and equipment **
c) To measure air quality
d) To mix chemicals
Rationale: Decontamination prevents the spread of hazardous
substances off-site and protects workers.
8. Which chemical is commonly used for oxidizing organic
contaminants in soil and groundwater?
a) Sodium hydroxide
b) Hydrogen peroxide **
c) Sulfuric acid
d) Calcium carbonate
Rationale: Hydrogen peroxide is an oxidizing agent that can break down
organic pollutants through chemical reactions.
, 9. Which federal law governs the cleanup of contaminated sites in the
United States?
a) Clean Water Act
b) Resource Conservation and Recovery Act (RCRA)
c) Comprehensive Environmental Response, Compensation, and
Liability Act (CERCLA) **
d) Endangered Species Act
Rationale: CERCLA, also called Superfund, regulates the assessment and
cleanup of hazardous waste sites.
10. Which method is commonly used for soil vapor extraction?
a) Injecting water
b) Pulling vapors through a vacuum system **
c) Burning soil
d) Compaction
Rationale: Soil vapor extraction removes volatile contaminants from soil
by applying vacuum to pull vapors out.
11. Which type of sampling is most appropriate to determine the
extent of groundwater contamination?
a) Surface water grab sample
b) Monitoring well sampling **
c) Air sample
d) Soil core sample
Rationale: Monitoring wells provide data on groundwater
contamination at specific depths.
