Post-Remediation Verification & Clearance Testing Flashcards
7 cards from real CMA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Post-Remediation Verification & Clearance Testing flashcards as text
What is the recommended building condition prior to collecting post-remediation clearance air samples in terms of building enclosure?
Answer: The building should be closed up for a minimum of 4 hours before sampling
The building should be closed for a minimum of 4 hours before clearance air sampling to allow airborne spores to settle and accumulate, giving a representative measurement.
What information must be included in a post-remediation verification report?
Answer: Inspection date, sampling locations, methods used, laboratory results, comparison to clearance criteria, and professional opinion
A complete PRV report must document the inspection date, sampling locations and methods, lab results, comparison to clearance standards, and the assessor's professional opinion on clearance.
What does settled dust sampling during post-remediation verification help assess?
Answer: The cumulative historical burden of mold spores that have settled onto surfaces over time
Settled dust sampling (such as ERMI) captures spores that have accumulated on surfaces over time, providing information about the historical mold burden in a space rather than current airborne levels.
Which of the following is the best indicator that post-remediation verification clearance criteria have been met?
Answer: Indoor spore types and concentrations are similar to or lower than outdoor background samples
The standard clearance criterion compares indoor air samples to outdoor background samples; indoor levels should be similar to or lower than outdoor levels in the same spore types.
During post-remediation verification, what does the presence of elevated Stachybotrys chartarum spores indoors (not found outdoors) most likely indicate?
Answer: Residual contamination or inadequate cleaning of cellulosic materials
Stachybotrys is a slow-growing mold found almost exclusively on wet cellulosic materials; its indoor presence above outdoor levels strongly suggests residual contamination from inadequate remediation.
What is the significance of documenting photographic evidence during post-remediation verification?
Answer: Photographs provide an objective visual record of conditions before and after remediation for the report
Photographic documentation provides an objective, defensible visual record of conditions observed during PRV, supporting the written findings and conclusions in the report.
Which of the following statements about post-remediation verification is TRUE?
Answer: PRV assesses conditions at a specific point in time and does not guarantee future mold-free conditions
PRV provides a snapshot of conditions at the time of inspection; it cannot guarantee future mold-free conditions because mold can return if moisture problems recur.