MRS Mold Containment and Cleanup Practices 4

Question 1

Which cleaning method is recommended for removing mold from hard lumber or wood structural members that cannot be removed?

Accepted Answer

Wire brushing or sanding followed by HEPA vacuuming

Answer

Wire brushing or sanding, followed by HEPA vacuuming to capture debris, is the recommended method for cleaning mold from structural wood that must remain.

Question 2

What is the significance of maintaining relative humidity (RH) below 60% during and after mold remediation?

Accepted Answer

Mold cannot grow or regrow at RH levels below 60%

Answer

Mold requires moisture to grow, and maintaining RH below 60% deprives mold of the humidity needed to establish or reestablish growth.

Question 3

What does 'source removal' mean in the context of mold cleanup?

Accepted Answer

Physically removing mold-contaminated materials from the building

Answer

Source removal refers to the physical removal and disposal of mold-contaminated building materials from the structure.

Question 4

During remediation of a large mold-contaminated HVAC system, what is the FIRST recommended step?

Accepted Answer

Shut down the HVAC system to prevent spreading spores throughout the building

Answer

The HVAC system must be shut down first to prevent it from distributing mold spores to unaffected areas of the building during remediation.

Question 5

Which scenario would typically require full containment with a decontamination chamber rather than a mini-containment setup?

Accepted Answer

A 100+ square foot mold infestation in a basement

Answer

Large-scale mold contamination (typically over 100 square feet) requires full containment with a decontamination chamber to protect occupants and workers.

(MRS) Mold Remediation Specialist Practice Test

(MRS) Mold Remediation Specialist Practice Test

MRS Mold Containment and Cleanup Practices 4