Sen Lin, PrepPass Founder · Verified against OSHA — 29 CFR 1910.120 · How we review
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OSHA HAZWOPER 40-Hour Exam Cram Sheet (2026)
The highest-yield points on the OSHA HAZWOPER 40-Hourexam, grouped by the exam's real content areas. Print it, review the ones you keep missing, then drill them with free practice questions.
6content areas
Hazard Recognition & Toxicology
17% of the exam- Routes of Exposure
- Dose, Response, and Toxicity
- Exposure Limits and IDLH
- Hazard Categories and Monitoring
PPE Use & Selection
17% of the exam- EPA Levels A Through D
- Respiratory Protection Types
- Chemical-Protective Clothing and Its Limits
- Donning, Doffing, and Heat Stress
Safe Work Practices & Engineering Controls
17% of the exam- The Buddy System
- Work Zones
- Confined Spaces and Ventilation
- Spill Control Basics
Decontamination & Emergency Response
17% of the exam- Decontamination Lines and Methods
- The Emergency Response Plan
- Incident Command System
- Evacuation and Accountability
Medical Surveillance
16% of the exam- Baseline and Periodic Exams
- Exposure Monitoring and Early Detection
- Recordkeeping and Fitness for Duty
Site Safety & Health Personnel
16% of the exam- The Health and Safety Plan (HASP)
- Key Roles and Responsibilities
- Training Requirements and Air Monitoring
Now prove you know them
Reading the outline is not the same as recalling it under exam pressure. Drill 22+ free OSHA HAZWOPER 40-Hour practice questions to find your weak areas, then sit a full timed mock — no signup, no paywall.
Study aid, not a substitute for the official material — always confirm the current rule with OSHA — 29 CFR 1910.120. Last verified: August 2026.