AMRT FINALS EXAMS QUESTIONS AND ANSWERS
SET A+
✔✔nutrient that mold grows best on - ✔✔Cellulose
✔✔ERH - ✔✔The relative humidity take at the surface
✔✔water activity Hydrophilic molds prefer - ✔✔>0.90
✔✔water activity Mesophilic molds prefer - ✔✔>0.80 <0.90
✔✔water activity Xerophilic molds prefer - ✔✔<0.80
✔✔adverse health effect from mold exposure - ✔✔Asthma
✔✔4 ways we can be exposed to bioaeresols - ✔✔1. Dermal
2. Inhalation
3. Ingestion
4. Puncture
✔✔common route of entry for mold exposure - ✔✔Inhalation
✔✔common route of entry for exposure to category 3 water - ✔✔Ingestion
✔✔What does mVOC stand for? - ✔✔Microbial Volatial Organic Compounds
✔✔What are mVOCs? - ✔✔Gaseous waste by products released by actively growing
microorganisms
✔✔3 other sources for mVOCs - ✔✔1. Re-activated pet urine
2. Bacteria
3. Off-gassing of wet building materials
, ✔✔viable - ✔✔Can germinate given the optimum conditions
✔✔settled spores - ✔✔Spores that have landed on the surface but not actively growing
✔✔mycotoxins - ✔✔Toxic chemical compound produced by molds
✔✔Why do molds produce mycotoxins? - ✔✔Gives the mold a competitive advantage
over other microorganisms competing for the same environment
✔✔best way to prevent mold growth - ✔✔Control moisture, and ,if the structure is wet,
dry it quickly
✔✔immunizations that water and mold technicians recommended to have - ✔✔Hepatitis
A & B, Tetanus
✔✔4 populations of individuals that are considered to be at a higher risk for exposure to
mold and bacteria - ✔✔1. Elderly
2. Pregnant women
3. Immuno-compromised
4. Children
✔✔Which air pressure differential between the work area and the surrounding space
must be created to prevent contaminants from leaving the work zone? -
✔✔lower/negative
✔✔Air pressure moves from - ✔✔high to low pressure
✔✔This should be constructed for entry into and exit from a remediation area - ✔✔exit
chamber
✔✔What is the desired pressure to achieve and maintain inside the containment
chamber that is being maintained at a lower partial pressure differential? - ✔✔-5 to -7
Pa or -0.02 to -0.028 inches of water column
✔✔risks of using spray adhesive - ✔✔Toxic and Flammable
✔✔Why should a technician use a fire retardant polyethylene for containment? - ✔✔In
case of a fire, this poly will melt instead of burn and will not raise the fire load
✔✔slip factor recommended for 6 mil poly and why? - ✔✔Medium (no oil or talc)
✔✔goal for mold remediation - ✔✔Achieve mold concentrations that are lower inside
containment than the exterior or unaffected areas with similar mold types present
SET A+
✔✔nutrient that mold grows best on - ✔✔Cellulose
✔✔ERH - ✔✔The relative humidity take at the surface
✔✔water activity Hydrophilic molds prefer - ✔✔>0.90
✔✔water activity Mesophilic molds prefer - ✔✔>0.80 <0.90
✔✔water activity Xerophilic molds prefer - ✔✔<0.80
✔✔adverse health effect from mold exposure - ✔✔Asthma
✔✔4 ways we can be exposed to bioaeresols - ✔✔1. Dermal
2. Inhalation
3. Ingestion
4. Puncture
✔✔common route of entry for mold exposure - ✔✔Inhalation
✔✔common route of entry for exposure to category 3 water - ✔✔Ingestion
✔✔What does mVOC stand for? - ✔✔Microbial Volatial Organic Compounds
✔✔What are mVOCs? - ✔✔Gaseous waste by products released by actively growing
microorganisms
✔✔3 other sources for mVOCs - ✔✔1. Re-activated pet urine
2. Bacteria
3. Off-gassing of wet building materials
, ✔✔viable - ✔✔Can germinate given the optimum conditions
✔✔settled spores - ✔✔Spores that have landed on the surface but not actively growing
✔✔mycotoxins - ✔✔Toxic chemical compound produced by molds
✔✔Why do molds produce mycotoxins? - ✔✔Gives the mold a competitive advantage
over other microorganisms competing for the same environment
✔✔best way to prevent mold growth - ✔✔Control moisture, and ,if the structure is wet,
dry it quickly
✔✔immunizations that water and mold technicians recommended to have - ✔✔Hepatitis
A & B, Tetanus
✔✔4 populations of individuals that are considered to be at a higher risk for exposure to
mold and bacteria - ✔✔1. Elderly
2. Pregnant women
3. Immuno-compromised
4. Children
✔✔Which air pressure differential between the work area and the surrounding space
must be created to prevent contaminants from leaving the work zone? -
✔✔lower/negative
✔✔Air pressure moves from - ✔✔high to low pressure
✔✔This should be constructed for entry into and exit from a remediation area - ✔✔exit
chamber
✔✔What is the desired pressure to achieve and maintain inside the containment
chamber that is being maintained at a lower partial pressure differential? - ✔✔-5 to -7
Pa or -0.02 to -0.028 inches of water column
✔✔risks of using spray adhesive - ✔✔Toxic and Flammable
✔✔Why should a technician use a fire retardant polyethylene for containment? - ✔✔In
case of a fire, this poly will melt instead of burn and will not raise the fire load
✔✔slip factor recommended for 6 mil poly and why? - ✔✔Medium (no oil or talc)
✔✔goal for mold remediation - ✔✔Achieve mold concentrations that are lower inside
containment than the exterior or unaffected areas with similar mold types present
