HazMat Awareness and Operations Exam SCRIPT
2026/2027 WITH EXPERT-VERIFIED ANSWERS RATED
A+
• Vapor suppression -✓✓ Reduces/eliminates release; prevents vapor from entering the
air
• Vapor dispersion -✓✓ Breaks up and dilutes vapor to minimize concentration ('thin out'
— fog nozzle)
• Dilution -✓✓ Apply a solvent (often water) to reduce concentration
• Disinfection -✓✓ Scrubbing and decon
• Technical decon -✓✓ Eliminates contamination from responder PPE; set up for
responders; takes place in the warm zone
• Mass decon -✓✓ For multiple contaminated individuals needing immediate attention;
must control large groups by creating multiple corridors
• Emergency decon -✓✓ Established at every HazMat incident using a charged hoseline
and copious amounts of water; used for life-threatening emergencies
• Best form of decon -✓✓ Soap and water
• Best way to decon a group -✓✓ Mass decon
• Biggest concern with mass decon -✓✓ Crowd control
• PPE in the decon zone -✓✓ One level below the level worn in the hot zone
• Level A -✓✓ Fully encapsulating and vapor-resistive (highest protection)
• Level B -✓✓ Chemical splash protection with the highest level of respiratory protection
• Defensive operation -✓✓ Contain a spill/leak from a safe distance with no direct
contact with the material
• Shelter in place -✓✓ Remain in a safe zone until the area is cleared
• Ambulatory -✓✓ Able to walk
2026/2027 WITH EXPERT-VERIFIED ANSWERS RATED
A+
• Vapor suppression -✓✓ Reduces/eliminates release; prevents vapor from entering the
air
• Vapor dispersion -✓✓ Breaks up and dilutes vapor to minimize concentration ('thin out'
— fog nozzle)
• Dilution -✓✓ Apply a solvent (often water) to reduce concentration
• Disinfection -✓✓ Scrubbing and decon
• Technical decon -✓✓ Eliminates contamination from responder PPE; set up for
responders; takes place in the warm zone
• Mass decon -✓✓ For multiple contaminated individuals needing immediate attention;
must control large groups by creating multiple corridors
• Emergency decon -✓✓ Established at every HazMat incident using a charged hoseline
and copious amounts of water; used for life-threatening emergencies
• Best form of decon -✓✓ Soap and water
• Best way to decon a group -✓✓ Mass decon
• Biggest concern with mass decon -✓✓ Crowd control
• PPE in the decon zone -✓✓ One level below the level worn in the hot zone
• Level A -✓✓ Fully encapsulating and vapor-resistive (highest protection)
• Level B -✓✓ Chemical splash protection with the highest level of respiratory protection
• Defensive operation -✓✓ Contain a spill/leak from a safe distance with no direct
contact with the material
• Shelter in place -✓✓ Remain in a safe zone until the area is cleared
• Ambulatory -✓✓ Able to walk
