RIA IICRC S520 Mold Remediation 3

Question 1

Under IICRC S520, which professional is qualified to perform post-remediation verification sampling and interpret results?

Accepted Answer

An independent Industrial Hygienist or qualified environmental professional

Answer

An independent IH or qualified environmental professional should conduct PRV to avoid conflicts of interest.

Question 2

According to IICRC S520, what moisture level (by weight) in wood is generally considered the upper limit to prevent mold growth?

Accepted Answer

19%

Answer

Wood moisture content should be kept below approximately 19% by weight to prevent mold growth.

Question 3

Which of the following sampling methods collects mold spores impacted onto a sticky surface for microscopic analysis?

Accepted Answer

Tape lift sampling

Answer

Tape lift sampling collects surface spores on a transparent adhesive for direct microscopy.

Question 4

IICRC S520 recommends that workers performing mold remediation wear protective clothing primarily to:

Accepted Answer

Prevent carrying mold spores out of the work area

Answer

Protective clothing, including disposable suits, prevents workers from carrying spores on their clothes into clean areas.

Question 5

In IICRC S520 terminology, 'amplification' refers to:

Accepted Answer

The growth of mold beyond its normal ecological role due to a moisture source

Answer

Amplification is the abnormal proliferation of mold resulting from an uncontrolled moisture source in a building.

(RIA) Restoration Industry Association Certified Practice Test