Mold Containment and Cleanup Practices Flashcards

What is the correct sequence for mold remediation work inside a containment zone?

Answer: Remove contaminated materials → HEPA vacuum → clean remaining surfaces → dry

The standard sequence is to remove contaminated materials first, then HEPA vacuum debris, clean remaining surfaces, and thoroughly dry the area.

Which of the following is NOT a recommended method to verify air quality after mold remediation before releasing a containment?

Answer: Sniff test by the building occupant

A sniff test by an occupant is not a reliable or professional method for clearance verification; objective measurements and visual inspection are required.

What type of respirator is recommended when remediating large areas (over 100 sq ft) or when dealing with toxigenic mold species?

Answer: Full-face air-purifying respirator with P100 cartridges

A full-face air-purifying respirator with P100 particulate cartridges offers both eye protection and enhanced filtration for large or toxigenic mold remediation.

Why should mold-contaminated materials NEVER be dry-swept or dry-brushed during cleanup?

Answer: Dry agitation releases and aerosolizes mold spores, spreading contamination

Dry sweeping or brushing disturbs mold colonies and sends spores airborne, dramatically increasing the risk of spread and inhalation exposure.

What is the purpose of conducting clearance air sampling after remediation work is complete?

Answer: To confirm that airborne spore concentrations in the remediated area are comparable to or lower than outdoor or background levels

Clearance air sampling verifies that post-remediation airborne spore levels are at or below background levels, confirming the area is safe for reoccupancy.

Under IICRC S520 guidelines, what should a remediator do if active moisture intrusion is still present when they arrive on site?

Answer: Notify the client and delay remediation until the moisture source is fixed

Remediating while a moisture source is still active is ineffective; the source must be corrected before remediation begins to prevent immediate recurrence.

Which document type should be created before beginning remediation on a large commercial project to outline the scope, procedures, and containment requirements?

Answer: Mold remediation protocol or work plan

A written mold remediation protocol or work plan defines the project scope, containment levels, cleanup methods, PPE requirements, and clearance criteria before work begins.