IICRC S520 Mold Remediation Flashcards

According to IICRC S520, 'Full Containment' with double-layer polyethylene barriers and airlocks is required when:

Answer: Condition 3 contamination exceeds 100 sq ft or high-risk occupants are present

Full Containment with airlocks is required for large Condition 3 areas (over 100 sq ft) or when vulnerable populations are present.

Which type of air sample is collected by drawing a measured volume of air through a filter or impactor to quantify airborne spore concentrations?

Answer: Volumetric air sample

Volumetric air sampling draws a specific volume of air to quantify spore concentrations per cubic meter.

Under IICRC S520, a 'Health and Safety Plan' for a mold remediation project should include which of the following?

Answer: Site-specific hazard identification, PPE requirements, and emergency procedures

A Health and Safety Plan must address site hazards, required PPE, decontamination procedures, and emergency response.

IICRC S520 recommends that HEPA vacuuming during mold remediation should be performed:

Answer: Before and after disturbing contaminated materials

HEPA vacuuming before disturbance reduces spore release, and after disturbance removes residual contamination.

Which genus of mold, commonly found after water damage, is associated with potential mycotoxin production and black powdery growth on cellulose materials?

Answer: Stachybotrys

Stachybotrys chartarum is a water-damage indicator mold that produces mycotoxins and grows on wet cellulose substrates.

According to IICRC S520, the decontamination chamber (airlock) serves what primary function?

Answer: A transition zone where workers HEPA-vacuum suits and remove PPE before exiting containment

The decontamination chamber is a transition zone that prevents workers from carrying contamination out of the contained area.

IICRC S520 indicates that biocides (antimicrobials) used during mold remediation should be registered with which agency?

Answer: EPA (Environmental Protection Agency)

Biocides used in mold remediation must be EPA-registered pesticides applied according to their label directions.