MRS Removal Techniques & Methods 2

Question 1

Which removal technique is recommended when mold is found on concrete block walls in a basement?

Accepted Answer

Wire brushing followed by HEPA vacuuming

Answer

Wire brushing dislodges mold from porous concrete, and HEPA vacuuming captures spores without spreading contamination.

Question 2

During dry ice blasting for mold removal, what is the PRIMARY safety concern unique to this method?

Accepted Answer

Carbon dioxide buildup in enclosed spaces

Answer

Dry ice (CO2) sublimates and can displace oxygen in poorly ventilated spaces, creating an asphyxiation hazard.

Question 3

What is the purpose of applying an encapsulant after mold removal on a wood structural member?

Accepted Answer

To seal any residual spores that cannot be physically removed

Answer

Encapsulants seal pores in wood to prevent residual spores from becoming airborne in the future.

Question 4

When remediating mold on fiberglass insulation batts, the BEST practice is to:

Accepted Answer

Remove and discard the insulation entirely

Answer

Fiberglass insulation cannot be adequately cleaned and must be bagged and discarded to prevent continued contamination.

Question 5

Which of the following BEST describes the 'soda blasting' mold removal method?

Accepted Answer

Using sodium bicarbonate propelled by compressed air to abrade mold from surfaces

Answer

Soda blasting propels sodium bicarbonate particles at high velocity to remove mold without damaging softer substrates.

(MRS) Mold Remediation Specialist Practice Test