IICRC S520 Mold Remediation Flashcards

According to IICRC S520, what is the primary purpose of establishing a containment area during mold remediation?

Answer: To prevent cross-contamination of clean areas

Containment prevents mold spores and contaminated dust from spreading to unaffected areas during remediation.

Under IICRC S520, which condition type typically warrants 'Limited Containment' using 6-mil polyethylene sheeting?

Answer: Condition 2 or 3 areas between 10 and 100 sq ft

Limited Containment is appropriate for Condition 2 or 3 areas between 10 and 100 square feet.

Which respirator is the MINIMUM level of protection recommended by IICRC S520 when working in Condition 3 environments?

Answer: Half-face air-purifying respirator with P100 filters

A half-face air-purifying respirator with P100 particulate filters is the minimum for Condition 3 remediation work.

What does IICRC S520 define as 'Condition 1' in a building environment?

Answer: Normal fungal ecology with no visible mold or malodor

Condition 1 is a normal fungal ecology where no visible mold growth or malodor is present.

According to IICRC S520, post-remediation verification (PRV) should confirm that the remediated area has achieved what status?

Answer: Condition 1 or better

PRV must confirm the area has been returned to Condition 1 — normal fungal ecology.

Which type of HEPA-filtered equipment is used during mold remediation to create negative air pressure inside the containment zone?

Answer: Air scrubber / negative air machine

A HEPA-filtered negative air machine (air scrubber) exhausts air outside containment, maintaining negative pressure to prevent outward spore migration.

IICRC S520 states that porous materials with heavy mold growth (Condition 3) should generally be:

Answer: Removed and properly discarded

Heavily contaminated porous materials that cannot be effectively cleaned should be removed and discarded according to S520.