CPR Mold Assessment & Abatement 3

Question 1

A restorer discovers mold in an HVAC system. Per IICRC S520, what is the recommended first step?

Accepted Answer

Shut down the HVAC system to prevent spore distribution before beginning work

Answer

Shutting down the HVAC system immediately prevents further distribution of mold spores throughout the building via ductwork.

Question 2

Which type of respirator provides the minimum acceptable protection for workers in a small mold remediation area (10–100 sq ft) per EPA guidelines?

Accepted Answer

Half-face respirator with N-95 or better particulate filter

Answer

EPA guidance recommends at minimum an N-95 half-face respirator for small mold remediation areas of 10–100 square feet.

Question 3

Post-remediation verification (PRV) sampling should be conducted under what conditions?

Accepted Answer

After containment is in place and the work area is visually clean but before containment is removed

Answer

PRV sampling is most valid when performed after visible cleanup, while containment remains in place to reflect work area conditions.

Question 4

What is 'hyphae' in the context of mold biology?

Accepted Answer

The thread-like filaments that make up the body (mycelium) of a mold

Answer

Hyphae are the microscopic filaments that form the vegetative body of a mold organism, collectively called mycelium.

Question 5

Which moisture reading on a pin-type meter in drywall paper typically indicates active mold growth risk?

Accepted Answer

Above 16–17% moisture content

Answer

Most mold species can begin to colonize porous building materials once moisture content exceeds approximately 16–17%.

(CPR) Certified Priority Restoration Practice Test