MRS Post-Remediation Verification 2

Question 1

Which sampling method is considered the gold standard for post-remediation verification of surface mold contamination?

Accepted Answer

Tape lift sampling

Answer

Tape lift sampling is considered the gold standard for detecting surface mold contamination because it directly samples the surface in question.

Question 2

What is the primary purpose of a 'clearance sample' taken during post-remediation verification?

Accepted Answer

To confirm remediation was effective and the area is safe for reoccupancy

Answer

Clearance samples confirm that remediation successfully reduced contamination to acceptable levels, allowing the space to be reoccupied safely.

Question 3

A post-remediation air sample shows Stachybotrys spores at levels higher than the outdoor control sample. What should the remediator conclude?

Accepted Answer

Remediation has failed and additional work is required

Answer

Indoor levels exceeding outdoor control levels indicate residual contamination, meaning remediation was not successful and further work is needed.

Question 4

Under IICRC S520 guidelines, who should ideally collect post-remediation verification samples?

Accepted Answer

An independent industrial hygienist or third-party inspector

Answer

IICRC S520 recommends an independent third party collect clearance samples to avoid conflicts of interest and ensure objectivity.

Question 5

What does a 'spore trap' air sample measure?

Accepted Answer

Total airborne fungal spore concentrations by genus

Answer

Spore trap cassettes capture airborne particles and allow laboratory analysts to count and identify fungal spores by genus.

(MRS) Mold Remediation Specialist Practice Test