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HAZWOPER 40 – FINAL ACTUAL EXAM
ALL QUESTIONS AND CORRECT
DETAILED ANSWERS |TOP RATED
VERSION FOR 2026-2027 | ALREADY A
GRADED |NEW AND REVISED
1. A worker entering a hazardous waste site for the first time
must first receive which training level according to OSHA?
A. 8-hour refresher
B. 40-hour HAZWOPER initial training
C. 24-hour training
D. Supervisor training only
Italicized rationale: OSHA mandates 40 hours of initial
training for general site workers before engaging in
hazardous waste operations.
2. The primary purpose of a site safety and health plan
(SSHP) is to:
A. Document cleanup costs
B. Identify hazards and control measures specific to the
site
C. Replace OSHA regulations
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D. Eliminate the need for PPE
Italicized rationale: The SSHP outlines site-specific
hazards, controls, PPE, and procedures to protect
workers.
3. Which agency enforces HAZWOPER regulations?
A. EPA
B. CDC
C. OSHA
D. FEMA
Italicized rationale: OSHA enforces 29 CFR 1910.120,
which governs HAZWOPER.
4. A contaminant with an IDLH value presents what type of
risk?
A. Chronic exposure only
B. Immediate danger to life or health
C. Environmental damage only
D. Minimal worker risk
Italicized rationale: IDLH refers to concentrations that
pose immediate life-threatening risks.
5. Which level of PPE provides the highest respiratory
protection?
A. Level D
B. Level C
C. Level B
D. Level A
Italicized rationale: Level A includes fully encapsulating
suits with SCBA, offering maximum protection.
6. A hazard analysis should be performed:
A. Only after an accident
B. Before work begins and updated as conditions
change
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C. Once per year
D. Only by management
Italicized rationale: Continuous hazard assessment is
required to address evolving site conditions.
7. Which factor most influences the selection of respiratory
protection?
A. Worker preference
B. Cost of equipment
C. Nature and concentration of contaminants
D. Site size
Italicized rationale: Respirator selection depends on
contaminant type, concentration, and exposure limits.
8. The “buddy system” is primarily used to:
A. Increase productivity
B. Enhance worker safety through mutual monitoring
C. Reduce PPE costs
D. Assign tasks faster
Italicized rationale: Buddies observe each other for signs
of exposure or equipment failure.
9. A Safety Data Sheet (SDS) provides information on all
EXCEPT:
A. Chemical hazards
B. First aid measures
C. Worker job performance evaluations
D. Exposure controls
Italicized rationale: SDSs address chemical safety, not
employee performance.
10. Which route of exposure is most common for
hazardous chemicals?
A. Ingestion
B. Inhalation
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C. Injection
D. Absorption through eyes only
Italicized rationale: Airborne contaminants make
inhalation the most common exposure route.
11. Heat stress is most likely to occur when workers are:
A. Wearing Level D PPE in winter
B. Wearing encapsulating PPE in hot environments
C. Hydrated and resting
D. Working indoors only
Italicized rationale: Heavy PPE impairs heat dissipation,
increasing heat stress risk.
12. A confined space at a hazardous site requires:
A. No special precautions
B. Atmospheric testing and permit procedures
C. Only verbal authorization
D. Standard PPE only
Italicized rationale: Confined spaces pose atmospheric
hazards requiring permits and testing.
13. The primary goal of decontamination is to:
A. Improve worker comfort
B. Prevent the spread of contaminants
C. Dispose of waste cheaply
D. Reduce training needs
Italicized rationale: Decontamination prevents cross-
contamination and secondary exposure.
14. Which monitoring instrument detects flammable
gases?
A. PID
B. Dosimeter
C. Combustible gas indicator (CGI)
D. Sound level meter
HAZWOPER 40 – FINAL ACTUAL EXAM
ALL QUESTIONS AND CORRECT
DETAILED ANSWERS |TOP RATED
VERSION FOR 2026-2027 | ALREADY A
GRADED |NEW AND REVISED
1. A worker entering a hazardous waste site for the first time
must first receive which training level according to OSHA?
A. 8-hour refresher
B. 40-hour HAZWOPER initial training
C. 24-hour training
D. Supervisor training only
Italicized rationale: OSHA mandates 40 hours of initial
training for general site workers before engaging in
hazardous waste operations.
2. The primary purpose of a site safety and health plan
(SSHP) is to:
A. Document cleanup costs
B. Identify hazards and control measures specific to the
site
C. Replace OSHA regulations
,2|Page
D. Eliminate the need for PPE
Italicized rationale: The SSHP outlines site-specific
hazards, controls, PPE, and procedures to protect
workers.
3. Which agency enforces HAZWOPER regulations?
A. EPA
B. CDC
C. OSHA
D. FEMA
Italicized rationale: OSHA enforces 29 CFR 1910.120,
which governs HAZWOPER.
4. A contaminant with an IDLH value presents what type of
risk?
A. Chronic exposure only
B. Immediate danger to life or health
C. Environmental damage only
D. Minimal worker risk
Italicized rationale: IDLH refers to concentrations that
pose immediate life-threatening risks.
5. Which level of PPE provides the highest respiratory
protection?
A. Level D
B. Level C
C. Level B
D. Level A
Italicized rationale: Level A includes fully encapsulating
suits with SCBA, offering maximum protection.
6. A hazard analysis should be performed:
A. Only after an accident
B. Before work begins and updated as conditions
change
,3|Page
C. Once per year
D. Only by management
Italicized rationale: Continuous hazard assessment is
required to address evolving site conditions.
7. Which factor most influences the selection of respiratory
protection?
A. Worker preference
B. Cost of equipment
C. Nature and concentration of contaminants
D. Site size
Italicized rationale: Respirator selection depends on
contaminant type, concentration, and exposure limits.
8. The “buddy system” is primarily used to:
A. Increase productivity
B. Enhance worker safety through mutual monitoring
C. Reduce PPE costs
D. Assign tasks faster
Italicized rationale: Buddies observe each other for signs
of exposure or equipment failure.
9. A Safety Data Sheet (SDS) provides information on all
EXCEPT:
A. Chemical hazards
B. First aid measures
C. Worker job performance evaluations
D. Exposure controls
Italicized rationale: SDSs address chemical safety, not
employee performance.
10. Which route of exposure is most common for
hazardous chemicals?
A. Ingestion
B. Inhalation
, 4|Page
C. Injection
D. Absorption through eyes only
Italicized rationale: Airborne contaminants make
inhalation the most common exposure route.
11. Heat stress is most likely to occur when workers are:
A. Wearing Level D PPE in winter
B. Wearing encapsulating PPE in hot environments
C. Hydrated and resting
D. Working indoors only
Italicized rationale: Heavy PPE impairs heat dissipation,
increasing heat stress risk.
12. A confined space at a hazardous site requires:
A. No special precautions
B. Atmospheric testing and permit procedures
C. Only verbal authorization
D. Standard PPE only
Italicized rationale: Confined spaces pose atmospheric
hazards requiring permits and testing.
13. The primary goal of decontamination is to:
A. Improve worker comfort
B. Prevent the spread of contaminants
C. Dispose of waste cheaply
D. Reduce training needs
Italicized rationale: Decontamination prevents cross-
contamination and secondary exposure.
14. Which monitoring instrument detects flammable
gases?
A. PID
B. Dosimeter
C. Combustible gas indicator (CGI)
D. Sound level meter
