IICRC S520 - Standard for Mold
Remediation Exam 2026 Questions and
Answers
Actual Growth - Correct answer-Mold that has formed active OR dormant
spores/structures
Administrative Controls - Correct answer-#2 on Hierarchy
(i.e. rotating shifts)
Air Scrubbing/Cleaning - Correct answer-A technique that dislodges particles from
surfaces to air and is removed by a vaccum
AFD - Correct answer-Air Filtration Device
Assessment Steps - Correct answer-1. Building history
2. Create description (mc/rh/visible)
3. Sampling Plan
4. Remediation Plan
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, Biofilm - Correct answer-Dense packs of microbial cells that grow on surfaces
Airborne - Condition 1 - Correct answer-Normal (indoor) fungal ecology
Airborne - Condition 2 - Correct answer-Indoor contaminated with settled
spores/fragments - traces of actual growth
Airborne Condition 3 - Correct answer-Indoor contaminated with presence of
actual growth (active or dormant)
Containment - Correct answer-An area enclosed with 6-mm polyethylene sheeting
and negative pressure
Contaminated - Correct answer-Presence of indoor mold growth/spores higher than
Condition 1
Engineering Controls - Correct answer-#1 on Hierarchy
(i.e. ventilation)
Fungi - Correct answer-Molds, mildews, yeasts, mushrooms
Unicellular growth
HEPA Filter - Correct answer-High Efficiency Particulate Air
(99.97% up to 0.3 microns diameter)
HVAC - Correct answer-Heating, Ventilation and Air Conditioning
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Remediation Exam 2026 Questions and
Answers
Actual Growth - Correct answer-Mold that has formed active OR dormant
spores/structures
Administrative Controls - Correct answer-#2 on Hierarchy
(i.e. rotating shifts)
Air Scrubbing/Cleaning - Correct answer-A technique that dislodges particles from
surfaces to air and is removed by a vaccum
AFD - Correct answer-Air Filtration Device
Assessment Steps - Correct answer-1. Building history
2. Create description (mc/rh/visible)
3. Sampling Plan
4. Remediation Plan
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
, Biofilm - Correct answer-Dense packs of microbial cells that grow on surfaces
Airborne - Condition 1 - Correct answer-Normal (indoor) fungal ecology
Airborne - Condition 2 - Correct answer-Indoor contaminated with settled
spores/fragments - traces of actual growth
Airborne Condition 3 - Correct answer-Indoor contaminated with presence of
actual growth (active or dormant)
Containment - Correct answer-An area enclosed with 6-mm polyethylene sheeting
and negative pressure
Contaminated - Correct answer-Presence of indoor mold growth/spores higher than
Condition 1
Engineering Controls - Correct answer-#1 on Hierarchy
(i.e. ventilation)
Fungi - Correct answer-Molds, mildews, yeasts, mushrooms
Unicellular growth
HEPA Filter - Correct answer-High Efficiency Particulate Air
(99.97% up to 0.3 microns diameter)
HVAC - Correct answer-Heating, Ventilation and Air Conditioning
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
