HAZMAT STUDY GUIDE
PRACTICE (LATEST 2025/2026
UPDATE) QUESTIONS WITH
CORRECT ANSWERS
When responding to hazardous materials/WMD incidents Operations level responders shall be
able to perform the following tasks
l. Analyze a HazMat incident to determine the scope Of the problem
2. Plan an initial response
3. Implement a planned response
4. Evaluate the progress
Analyzing a hazardous material incident to determine the scope of the problem involves...
1. Surveying the incident to identify containers and materials involved, determine if whether
hazardous material has been released and evaluate the surrounding conditions
2. Collect hazard and response information from SDS, CHEMTREC and shipping/manufacturer
contracts
3.Predict the behavior of Hazardous materials and its container
4.Estimate the potential harm through TRACE-MP
What does TRACE-MP stand for? Types of potential harm at Hazardous Material/WMD
incidents.
,Thermal
Radiation
Asphyxiation
Chemical
Etiological
Mechanical
Psychological/ Psychogenic
The initial response at a HazMat incident is determined by
The capabilities and competencies of available personnel and personal protective equipment
The response objectives at a hazardous material/WMD incident include...
I. Evacuation
II. Search and Rescue
Ill. Exposure protection/ Isolating the Area
IV. Defensive control techniques
V. Crime scene management and evidence preservation
VI. Recovery and termination
Describe the response options available for Evacuation
1. Full scale evacuation
2. Shelter-in-place
3. Combination
,Describe the response options available for Search and Rescue
1. Based on training and equipment
2. Risk-benefit analysis (risk a lot to save a lot, risk a little to save a little)
Describe the response options available for Exposure protection/isolating the Area
I. Establish initial isolation zone
2.Establish protective action distance
3. Establish control zones
Describe the response options available for Defensive Control Techniques
l. Damming (Overflow or Underflow)
2. Diking
3. Retention
4. Dispersion
5. Absorption
6. Adsorption
7. Dilution
8. Dissolution
9. Diversion
10. Vapor dispersion
11. Vapor suppression
12. Ventilation
13. Remote valve shutoff
, What is Damming
Physical method of confinement by which barriers are constructed to prevent or reduce the
quantity of liquid flowing into the environment. Consists of constructing a barrier across a
waterway to stop/control the product flow and pick up liquid or solid contaminants.
What is Underflow Damming
Spill control tactic used to trap floating lighter than water
materials behind the dam. Dam is constructed in a manner that allows uncontaminated water
to flow unobstructed under the dam while keeping the contaminant behind the dam.
What is Overflow Damming
Spill control tactic used to trap sinking heavier than water
materials behind the dam. With the product trapped, uncontaminated water is allowed to flow
unobstructed over the top of the dam.
What is Diking
Physical method of confinement by which barriers are constructed on
ground used to control the movement of liquids, sludges, solids, or other materials. Prevents
the
passage of hazmat from entering an area where it Will produce more harm.
What is retention
Physical method of confinement by which a liquid is temporarily
PRACTICE (LATEST 2025/2026
UPDATE) QUESTIONS WITH
CORRECT ANSWERS
When responding to hazardous materials/WMD incidents Operations level responders shall be
able to perform the following tasks
l. Analyze a HazMat incident to determine the scope Of the problem
2. Plan an initial response
3. Implement a planned response
4. Evaluate the progress
Analyzing a hazardous material incident to determine the scope of the problem involves...
1. Surveying the incident to identify containers and materials involved, determine if whether
hazardous material has been released and evaluate the surrounding conditions
2. Collect hazard and response information from SDS, CHEMTREC and shipping/manufacturer
contracts
3.Predict the behavior of Hazardous materials and its container
4.Estimate the potential harm through TRACE-MP
What does TRACE-MP stand for? Types of potential harm at Hazardous Material/WMD
incidents.
,Thermal
Radiation
Asphyxiation
Chemical
Etiological
Mechanical
Psychological/ Psychogenic
The initial response at a HazMat incident is determined by
The capabilities and competencies of available personnel and personal protective equipment
The response objectives at a hazardous material/WMD incident include...
I. Evacuation
II. Search and Rescue
Ill. Exposure protection/ Isolating the Area
IV. Defensive control techniques
V. Crime scene management and evidence preservation
VI. Recovery and termination
Describe the response options available for Evacuation
1. Full scale evacuation
2. Shelter-in-place
3. Combination
,Describe the response options available for Search and Rescue
1. Based on training and equipment
2. Risk-benefit analysis (risk a lot to save a lot, risk a little to save a little)
Describe the response options available for Exposure protection/isolating the Area
I. Establish initial isolation zone
2.Establish protective action distance
3. Establish control zones
Describe the response options available for Defensive Control Techniques
l. Damming (Overflow or Underflow)
2. Diking
3. Retention
4. Dispersion
5. Absorption
6. Adsorption
7. Dilution
8. Dissolution
9. Diversion
10. Vapor dispersion
11. Vapor suppression
12. Ventilation
13. Remote valve shutoff
, What is Damming
Physical method of confinement by which barriers are constructed to prevent or reduce the
quantity of liquid flowing into the environment. Consists of constructing a barrier across a
waterway to stop/control the product flow and pick up liquid or solid contaminants.
What is Underflow Damming
Spill control tactic used to trap floating lighter than water
materials behind the dam. Dam is constructed in a manner that allows uncontaminated water
to flow unobstructed under the dam while keeping the contaminant behind the dam.
What is Overflow Damming
Spill control tactic used to trap sinking heavier than water
materials behind the dam. With the product trapped, uncontaminated water is allowed to flow
unobstructed over the top of the dam.
What is Diking
Physical method of confinement by which barriers are constructed on
ground used to control the movement of liquids, sludges, solids, or other materials. Prevents
the
passage of hazmat from entering an area where it Will produce more harm.
What is retention
Physical method of confinement by which a liquid is temporarily
