Master the boundaries
Know what Awareness, Operations, and Technician responders may do. This prevents both test errors and unsafe field decisions.
HazMat Awareness + Operations Learning Center
Recognize the hazard. Control the scene. Operate defensively.
A free, complete HazMat Awareness/Operations review for firefighters: recognition and identification, DOT markings, 2024 ERG use, chemistry and toxicology, PPE, zones, defensive control, decon, WMD, termination, and practical readiness.
Start here
Your HazMat prep plan
Build recognition and the Operations role first. Then drill ERG use and defensive decision-making under time pressure.
Drill the ERG
Practice ID number → yellow, name → blue, guide → orange, and green-table protective-action decisions until lookup becomes automatic.
Use flashcards
Mark misses and repeat the weak deck. Placards, properties, PPE, zones, decon, and role limits should become quick recall.
Take the full exam
The simulator grades Awareness and Operations separately. Your goal is 90%+ overall and no section below 80%.
14-day plan
- Days 1–2: Roles + recognition
- Days 3–4: Markings + ERG
- Days 5–6: Chemistry + health hazards
- Days 7–8: PPE + scene control
- Days 9–10: Defensive control + decon
- Day 11: WMD + termination
- Day 12: Practical/JPR rehearsal
- Day 13: Timed 100-question exam
- Day 14: Review missed topics and weak cards
3-day cram plan
- Day 1: Roles, markings, ERG, chemistry, health
- Day 2: PPE, zones, defensive control, decon, WMD
- Day 3: Practical walkthrough + full mock exam + targeted review
Because the Colorado exam is sectioned, a strong Operations score cannot rescue a failing Awareness section. Train both.
Complete review
HazMat Awareness & Operations study guide
Expand each module. Progress is saved on this device.
Retrieval practice
HazMat flashcards
Say the answer before you flip. Mark weak cards and repeat them until recall is automatic.
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Quick skill drill
ERG section trainer
Build the lookup pathway before the test and before you need it on an incident.
Known ID number
Yellow pages. Find the UN/NA four-digit number, then follow it to the assigned orange guide.
Known material name
Blue pages. Find the proper shipping name alphabetically, then follow it to the orange guide.
Orange guide
Review potential hazards, public safety, fire/spill response, first aid, evacuation, and protective-clothing guidance for the guide.
Green-table material
Use the green tables and notes for initial isolation/protective action when the material is specifically listed. Account for spill size, day/night, and wind direction.
5-minute station drill
Use a real 2024 ERG
Have a partner call out five UN/NA numbers and five material names. Find the guide number, identify the primary hazard, and state whether green-table information applies. Do not memorize isolated guide numbers—the skill is fast, accurate lookup.
FireOpsSim tools
Use the existing HazMat Placard Reference, Isolation Planner, Decon Corridor Planner, and HazMat Size-Up Checklist as supplemental drills. Always verify operational decisions against the current ERG, SOPs, and command.
Colorado-style split
100-question HazMat Awareness/Operations mock exam
Original FireOpsSim questions. Not DFPC, NFPA, IFSAC, Pro Board, DOT, OSHA, or IFSTA exam questions.
Simulate the written test
25 Awareness + 75 Operations • 90 minutes • 80% required in each section. The simulator builds a randomized exam from the larger question bank.
- Choose the single best answer.
- Flag questions and return before submitting.
- Grade Awareness and Operations separately.
- Aim for 90%+ in both sections before the real test.
Question 1 of 10001:30:000 answered
Hands-on preparation
Operations practical / JPR readiness
Exact stations depend on the adopted standard and selected JPRs. Train the process and your department equipment until you can perform without prompts.
Analyze the incident
- Recognize a HazMat/WMD incident and identify hazards from a safe position.
- Use container/marking/shipping-document clues and the ERG.
- State responder-level limitations and request needed resources.
- Identify protective actions and communication needs.
Establish control
- Initiate/operate within ICS.
- Isolate and deny entry.
- Set appropriate hot/warm/cold zones and control access.
- Maintain accountability, escape routes, and changing-condition awareness.
Select PPE
- Identify the hazard and exposure route.
- Select only PPE authorized and appropriate for the assignment.
- Demonstrate inspection/donning/use limitations as required.
- Recognize heat stress, air-management, and contamination concerns.
Defensive control
- Choose diking, damming, diversion, absorption/adsorption, runoff control, or other allowed defensive tactics.
- State compatibility and environmental concerns.
- Maintain a safe position and do not cross into Technician source control.
- Reassess tactic effectiveness and changing conditions.
Decontamination
- Establish dirty-to-clean flow and control access.
- Select emergency/gross/basic decon based on the hazard and objective.
- Use PPE for decon personnel.
- Prevent runoff/secondary contamination and coordinate patient transfer.
Terminate safely
- Account for personnel and exposures.
- Manage contaminated PPE/tools/equipment.
- Complete required documentation and medical follow-up.
- Restore readiness and participate in the post-incident review.
Scenario drill
Run a 20-minute tabletop
Use a tanker, railcar, industrial release, or unknown-drum scenario. Require the student to approach/position, identify clues, use the ERG, establish zones, choose PPE, select one defensive control action, set decon, and explain termination. Inject a wind shift halfway through.
Evaluator mindset
During a certification practical, verbalize required decisions that may not be visible: “I am approaching upwind,” “this is beyond Operations source-control capability,” “I am protecting the storm drain defensively,” or “this tool remains contaminated and will not return to service.” Follow the actual Colorado skill sheet and your evaluator’s directions.
Final check
Am I ready to test?
Check an item only when you can explain or perform it without looking at notes.
Standards & source note
Know which standard your test uses
Colorado DFPC documents publicly accessible online show a 100-question Hazardous Materials Awareness/Operations exam composed of 25 Awareness and 75 Operations questions, with 80% required in each section and a 90-minute time limit, plus mandatory/random Operations practical JPRs requiring full completion. Those documents reference older NFPA 472-era material, so candidates should verify the exact current edition on their test authorization.
NFPA 470 is the consolidated Hazardous Materials/Weapons of Mass Destruction responder standard and combines material formerly found in NFPA 472, NFPA 1072, and NFPA 473. OSHA 29 CFR 1910.120(q)(6)(ii) continues to define Operations responders as defensive responders and identifies the core Operations competencies. PHMSA’s current public Emergency Response Guidebook is the 2024 ERG.