HAZWOPER Final Examination | OSHA 29 CFR 1910.120 | 2025/2026
HAZWOPER FINAL EXAMINATION
Hazardous Waste Operations and Emergency Response
OSHA 29 CFR 1910.120 | Latest 2025/2026 Edition
50 Questions with Complete Solutions and Rationales
INSTRUCTIONS
This examination consists of 50 multiple-choice questions organized into 10 sections (I-X).
Each question is worth 2 points. Select the BEST answer for each question.
A minimum passing score of 70% (35 correct) is required.
All correct answers are indicated in bold cyan blue with detailed rationales.
Time Limit: 2 Hours | Reference Materials: Closed Book
SCORING SUMMARY
Section I II III IV V VI VII VIII IX X Total
Points 10 10 10 10 10 10 10 10 10 10 100
Score
Section I: HAZWOPER Standard Overview & Regulatory Framework
1. (2 pts) Under OSHA 29 CFR 1910.120, which of the following operations is NOT specifically covered by the
HAZWOPER standard?
A. Cleanup operations at uncontrolled hazardous waste sites (CERCLA/Superfund)
B. Corrective actions involving RCRA hazardous waste facilities
C. Routine hazardous material transportation by commercial carriers
D. Emergency response operations for releases of hazardous substances
Correct Answer: C
Rationale: OSHA 29 CFR 1910.120(a)(1)(i-v) covers cleanup operations at uncontrolled waste sites, RCRA corrective
actions, voluntary cleanups, TSDF operations involving hazardous waste, and emergency response to hazardous substance
releases. Routine hazardous material transportation falls under DOT regulations (49 CFR), not HAZWOPER.
2. (2 pts) Which regulatory definition of a hazardous substance is NOT referenced by OSHA HAZWOPER?
A. Any substance designated under CERCLA (Superfund)
B. Substances listed under the Clean Water Act (CWA)
C. Any chemical used in agricultural pest control regardless of toxicity
D. Substances designated under the Toxic Substances Control Act (TSCA)
Correct Answer: C
1
, HAZWOPER Final Examination | OSHA 29 CFR 1910.120 | 2025/2026
Rationale: OSHA HAZWOPER 29 CFR 1910.120(a)(3) defines hazardous substances by referencing CERCLA, RCRA,
CWA, CAA, TSCA, DOT hazmat regulations, and OSHA HCS. Not all agricultural chemicals are automatically classified
as hazardous substances under HAZWOPER unless they appear on one of these regulatory lists.
3. (2 pts) The HAZWOPER standard was primarily developed in response to which major environmental
catastrophe?
A. Three Mile Island nuclear incident (1979)
B. Bhopal chemical disaster (1984)
C. Love Canal hazardous waste contamination (1978)
D. Exxon Valdez oil spill (1989)
Correct Answer: C
Rationale: The HAZWOPER standard (29 CFR 1910.120) was promulgated in response to the Love Canal disaster in
Niagara Falls, New York, where hazardous waste contamination led to a public health emergency. This event drove OSHA
to establish comprehensive training and safety requirements for hazardous waste workers.
4. (2 pts) Under HAZWOPER, a hazardous substance may include which type of hazard?
A. Chemical hazards only
B. Physical hazards only
C. Biological hazards only
D. Chemical, biological, radiological, and physical hazards
Correct Answer: D
Rationale: OSHA HAZWOPER defines hazardous substances broadly to include chemical, biological, radiological, and
physical hazards. This recognizes that hazardous waste sites may present multiple hazard types simultaneously, including
toxic chemicals, infectious agents, radioactive materials, and physical dangers.
5. (2 pts) Which agency shares primary federal oversight responsibility with OSHA for hazardous waste site
safety under CERCLA?
A. National Institute for Occupational Safety and Health (NIOSH)
B. Environmental Protection Agency (EPA)
C. Department of Transportation (DOT)
D. Federal Emergency Management Agency (FEMA)
Correct Answer: B
Rationale: EPA shares primary oversight with OSHA for hazardous waste site operations under CERCLA/Superfund. EPA
manages site cleanup and environmental protection, while OSHA enforces worker safety and health protections. This
interagency coordination ensures both goals are met at Superfund sites.
Section II: Site Safety & Health Plan (SSHP)
6. (2 pts) Which of the following is a required element of the Site Safety and Health Plan (SSHP) under OSHA
29 CFR 1910.120(b)(4)?
A. Employee performance evaluation criteria
2
HAZWOPER FINAL EXAMINATION
Hazardous Waste Operations and Emergency Response
OSHA 29 CFR 1910.120 | Latest 2025/2026 Edition
50 Questions with Complete Solutions and Rationales
INSTRUCTIONS
This examination consists of 50 multiple-choice questions organized into 10 sections (I-X).
Each question is worth 2 points. Select the BEST answer for each question.
A minimum passing score of 70% (35 correct) is required.
All correct answers are indicated in bold cyan blue with detailed rationales.
Time Limit: 2 Hours | Reference Materials: Closed Book
SCORING SUMMARY
Section I II III IV V VI VII VIII IX X Total
Points 10 10 10 10 10 10 10 10 10 10 100
Score
Section I: HAZWOPER Standard Overview & Regulatory Framework
1. (2 pts) Under OSHA 29 CFR 1910.120, which of the following operations is NOT specifically covered by the
HAZWOPER standard?
A. Cleanup operations at uncontrolled hazardous waste sites (CERCLA/Superfund)
B. Corrective actions involving RCRA hazardous waste facilities
C. Routine hazardous material transportation by commercial carriers
D. Emergency response operations for releases of hazardous substances
Correct Answer: C
Rationale: OSHA 29 CFR 1910.120(a)(1)(i-v) covers cleanup operations at uncontrolled waste sites, RCRA corrective
actions, voluntary cleanups, TSDF operations involving hazardous waste, and emergency response to hazardous substance
releases. Routine hazardous material transportation falls under DOT regulations (49 CFR), not HAZWOPER.
2. (2 pts) Which regulatory definition of a hazardous substance is NOT referenced by OSHA HAZWOPER?
A. Any substance designated under CERCLA (Superfund)
B. Substances listed under the Clean Water Act (CWA)
C. Any chemical used in agricultural pest control regardless of toxicity
D. Substances designated under the Toxic Substances Control Act (TSCA)
Correct Answer: C
1
, HAZWOPER Final Examination | OSHA 29 CFR 1910.120 | 2025/2026
Rationale: OSHA HAZWOPER 29 CFR 1910.120(a)(3) defines hazardous substances by referencing CERCLA, RCRA,
CWA, CAA, TSCA, DOT hazmat regulations, and OSHA HCS. Not all agricultural chemicals are automatically classified
as hazardous substances under HAZWOPER unless they appear on one of these regulatory lists.
3. (2 pts) The HAZWOPER standard was primarily developed in response to which major environmental
catastrophe?
A. Three Mile Island nuclear incident (1979)
B. Bhopal chemical disaster (1984)
C. Love Canal hazardous waste contamination (1978)
D. Exxon Valdez oil spill (1989)
Correct Answer: C
Rationale: The HAZWOPER standard (29 CFR 1910.120) was promulgated in response to the Love Canal disaster in
Niagara Falls, New York, where hazardous waste contamination led to a public health emergency. This event drove OSHA
to establish comprehensive training and safety requirements for hazardous waste workers.
4. (2 pts) Under HAZWOPER, a hazardous substance may include which type of hazard?
A. Chemical hazards only
B. Physical hazards only
C. Biological hazards only
D. Chemical, biological, radiological, and physical hazards
Correct Answer: D
Rationale: OSHA HAZWOPER defines hazardous substances broadly to include chemical, biological, radiological, and
physical hazards. This recognizes that hazardous waste sites may present multiple hazard types simultaneously, including
toxic chemicals, infectious agents, radioactive materials, and physical dangers.
5. (2 pts) Which agency shares primary federal oversight responsibility with OSHA for hazardous waste site
safety under CERCLA?
A. National Institute for Occupational Safety and Health (NIOSH)
B. Environmental Protection Agency (EPA)
C. Department of Transportation (DOT)
D. Federal Emergency Management Agency (FEMA)
Correct Answer: B
Rationale: EPA shares primary oversight with OSHA for hazardous waste site operations under CERCLA/Superfund. EPA
manages site cleanup and environmental protection, while OSHA enforces worker safety and health protections. This
interagency coordination ensures both goals are met at Superfund sites.
Section II: Site Safety & Health Plan (SSHP)
6. (2 pts) Which of the following is a required element of the Site Safety and Health Plan (SSHP) under OSHA
29 CFR 1910.120(b)(4)?
A. Employee performance evaluation criteria
2
