IICRC AMRT Exam
1. What does the term hydrophilic mean?: Organism is water loving
2. What'd does hydrophobic mean?: Organism avoids water
3. Name the Categories of Water according to the S500: Cat 1 - clean - low infection risk /
Cat 2 - gray - medium infection risk / Cat 3 - black - large infection risk
4. With which Category of Water can microbial growth occur?: All 3 categories
5. What categories of water (S500) do these sources fall under? Toilet Bowl?Surface Water
from Raising Rivers? Hydrostatic seepage? Aquarium? Wa- ter beyond the trap? Broken toilet
tank? Sea Water? Dishwasher and laundry/washing machine? Water in toilet bowl?: Toilet Bowl
= 2 // Surface Water fromRaising Rivers = 3 // Hydrostatic seepage = 2 // Aquarium =2 //
Water beyond the trap=3 // Broken toilet tank=1 // Sea Water=3 // Dishwasher and laundry &
washingmachine=2// Water in toilet bowl=1
6. What % of moisture content (meter reading) is necessary for mold growthto occur on
wood?: Above 17%
7. Wood rot can occur at which percent of moisture content?: Above 20%
8. What is the definition of water activity (aw)?: the amount of free water available on the
boundary layer of a substrate (surface) for microbial amplication
9. What moisture measurement is comparable to water activity (aw)?: Equi-librium Relative
Humidity (ERH)
10. What is the sequence (order) of procedures in a microbial remediation project?:
identification / correction of moisture problem // isolation of work area andHVAC registers //
air flow management (negative air) // demolition and removal of porous materials // cleaning
of remaining materials // deep cleaning of all surfaces in work area // post remediation
"clearance" testing // reconstruction
11. What type of polyethylene sheeting should be used for containments?: 4-6mil with medium
slip factor, and has to be at 25 or better flame retardant
12. What are pre-existing conditions?: Things that exist before we entered thebuilding (for
example, broken ceiling tile has nothing to do with water damage)
13. Name Source Containment Methods: source containment are used for smallor minimal
areas of microbial growth // goes directly to the source // can be used inlocal or full
containment // placing poly or carpet tack mat over moldly material priorto removal OR
placing a ceiling tile in a plastic bag // HEPA vacuuming or damp wiping of the work area as
needed // this is used if you have checked on the other side and nothing else is done... this is
it...
14. What happens to the spore counts during demolition?: Goes up and createscondition 2
15. What is the best slip factor for poly?: Medium slip
16. What do we do with HVAC system and vents?: Cover it up
, 17. What is the best slip factor for poly?: recommended minimum pressuredifferential of -
0.02 inch of water gauge (w.g.) OR -5 Pascal (Pa)
18. Work areas are pressurized in relationship to surrounding unaffect-ed areas.:
negative
19. CLean areas should be pressurized in relationship to the affect-ed
areas.: Positive
20. During a microbial remediation, air flow should always be from a area to a area.:
Clean to dirty
21. What determines the number of decon chambers in a microbial remedia- tion project?: The
size and kind of the job
22. Managed air flow has which benefits?: Prevents cross contamination // re- duces work
exposures // protect unaffected area // help HVAC system // protectsoccupants
23. What does AFD stand for?: Air Filtration Device
24. AFDs are rated by what parameter?: Cubic Feet per Minute
25. What does ACH stand for?: Air changes per hour
26. Calculate what AFD size is needed to create 4 air exchanges in a room 18x 30 x 8 foot.:
288 CFM
27. How many AFD's (rated at 1800CFM) are needed to create 6ACH in a 150 x60 x 11 foot
structure?: 5.5 H 6 (round up for CFM)
28. A scrubber rated at 1000CFM is placed in a 20 x 10 x 8 foot room. How manyACH's are
created?: 37.5 H 37 (round down for ACH)
29. What should be done to prevent spore release from AFD's when shuttingthem down,
transporting and storing them?: Seal intake with poly and tape
30. Why use spray adhesion (glue) cautiously?: Glue is toxic and flammable
31. What do we need to consider when setting up negative pressure contain-ments with
plastic sheeting?: Create a moisture barrier // has to be big enough towork in but small enough
to clean // has to be strong enough // must drive make upthrough the filter // design where
entry & exit are in a practical and safe way // use signage //
32. How do you treat moldy wood framing?: Abrasive methods (media lifting,blasting,
sanding)
33. In general, which remediation guidelines/standards should a remediator befamiliar with?:
S500 (Water) // S520 (Mold) // NY City Guidelines
34. The industry standard of care document for mold remediation contractorsis...?: S520
Standard for Professional Mold Remediation
35. What does "normal fungal ecology" mean?: Condition 1 // Normal or unconta-minated
building or items // Indoor environment that may have settled spores, fungalfragments whose
1. What does the term hydrophilic mean?: Organism is water loving
2. What'd does hydrophobic mean?: Organism avoids water
3. Name the Categories of Water according to the S500: Cat 1 - clean - low infection risk /
Cat 2 - gray - medium infection risk / Cat 3 - black - large infection risk
4. With which Category of Water can microbial growth occur?: All 3 categories
5. What categories of water (S500) do these sources fall under? Toilet Bowl?Surface Water
from Raising Rivers? Hydrostatic seepage? Aquarium? Wa- ter beyond the trap? Broken toilet
tank? Sea Water? Dishwasher and laundry/washing machine? Water in toilet bowl?: Toilet Bowl
= 2 // Surface Water fromRaising Rivers = 3 // Hydrostatic seepage = 2 // Aquarium =2 //
Water beyond the trap=3 // Broken toilet tank=1 // Sea Water=3 // Dishwasher and laundry &
washingmachine=2// Water in toilet bowl=1
6. What % of moisture content (meter reading) is necessary for mold growthto occur on
wood?: Above 17%
7. Wood rot can occur at which percent of moisture content?: Above 20%
8. What is the definition of water activity (aw)?: the amount of free water available on the
boundary layer of a substrate (surface) for microbial amplication
9. What moisture measurement is comparable to water activity (aw)?: Equi-librium Relative
Humidity (ERH)
10. What is the sequence (order) of procedures in a microbial remediation project?:
identification / correction of moisture problem // isolation of work area andHVAC registers //
air flow management (negative air) // demolition and removal of porous materials // cleaning
of remaining materials // deep cleaning of all surfaces in work area // post remediation
"clearance" testing // reconstruction
11. What type of polyethylene sheeting should be used for containments?: 4-6mil with medium
slip factor, and has to be at 25 or better flame retardant
12. What are pre-existing conditions?: Things that exist before we entered thebuilding (for
example, broken ceiling tile has nothing to do with water damage)
13. Name Source Containment Methods: source containment are used for smallor minimal
areas of microbial growth // goes directly to the source // can be used inlocal or full
containment // placing poly or carpet tack mat over moldly material priorto removal OR
placing a ceiling tile in a plastic bag // HEPA vacuuming or damp wiping of the work area as
needed // this is used if you have checked on the other side and nothing else is done... this is
it...
14. What happens to the spore counts during demolition?: Goes up and createscondition 2
15. What is the best slip factor for poly?: Medium slip
16. What do we do with HVAC system and vents?: Cover it up
, 17. What is the best slip factor for poly?: recommended minimum pressuredifferential of -
0.02 inch of water gauge (w.g.) OR -5 Pascal (Pa)
18. Work areas are pressurized in relationship to surrounding unaffect-ed areas.:
negative
19. CLean areas should be pressurized in relationship to the affect-ed
areas.: Positive
20. During a microbial remediation, air flow should always be from a area to a area.:
Clean to dirty
21. What determines the number of decon chambers in a microbial remedia- tion project?: The
size and kind of the job
22. Managed air flow has which benefits?: Prevents cross contamination // re- duces work
exposures // protect unaffected area // help HVAC system // protectsoccupants
23. What does AFD stand for?: Air Filtration Device
24. AFDs are rated by what parameter?: Cubic Feet per Minute
25. What does ACH stand for?: Air changes per hour
26. Calculate what AFD size is needed to create 4 air exchanges in a room 18x 30 x 8 foot.:
288 CFM
27. How many AFD's (rated at 1800CFM) are needed to create 6ACH in a 150 x60 x 11 foot
structure?: 5.5 H 6 (round up for CFM)
28. A scrubber rated at 1000CFM is placed in a 20 x 10 x 8 foot room. How manyACH's are
created?: 37.5 H 37 (round down for ACH)
29. What should be done to prevent spore release from AFD's when shuttingthem down,
transporting and storing them?: Seal intake with poly and tape
30. Why use spray adhesion (glue) cautiously?: Glue is toxic and flammable
31. What do we need to consider when setting up negative pressure contain-ments with
plastic sheeting?: Create a moisture barrier // has to be big enough towork in but small enough
to clean // has to be strong enough // must drive make upthrough the filter // design where
entry & exit are in a practical and safe way // use signage //
32. How do you treat moldy wood framing?: Abrasive methods (media lifting,blasting,
sanding)
33. In general, which remediation guidelines/standards should a remediator befamiliar with?:
S500 (Water) // S520 (Mold) // NY City Guidelines
34. The industry standard of care document for mold remediation contractorsis...?: S520
Standard for Professional Mold Remediation
35. What does "normal fungal ecology" mean?: Condition 1 // Normal or unconta-minated
building or items // Indoor environment that may have settled spores, fungalfragments whose
