Mold Remediation & Safety Standards 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 Mold Remediation & Safety Standards flashcards as text
Under the IICRC S520 standard, what condition code is assigned to a surface where mold growth is confirmed visually and/or analytically on materials that can be cleaned and restored?
Answer: Condition 3 — Actual mold growth or concentrated spore presence
Condition 3 indicates actual mold growth or highly elevated spore concentrations on surfaces and requires full remediation protocols.
Which personal protective equipment (PPE) component is specifically required to prevent dermal exposure to mold during remediation activities involving heavy contamination?
Answer: Disposable Tyvek or equivalent full-body coveralls
Disposable full-body coveralls prevent mold spores from contaminating skin and clothing, which could spread contamination beyond the work area.
A negative air machine (NAM) used in mold remediation must exhaust air to the building exterior. What is the minimum HEPA filtration efficiency required for the exhaust air?
Answer: 99.97% efficiency at 0.3 microns (true HEPA)
True HEPA filters with 99.97% efficiency at 0.3 microns are required on negative air machines to prevent exhausting mold spores into exterior areas or re-entry points.
A mold assessor is hired to perform a post-remediation verification inspection. Which of the following sampling strategies is MOST appropriate for clearance testing?
Answer: Air samples inside the remediated area compared to outdoor control samples
Clearance air sampling comparing the remediated area to outdoor controls is the standard PRV method, as it directly measures airborne spore levels that indicate remediation success.
When must a mold remediation worker undergo medical evaluation for respirator use according to OSHA's Respiratory Protection Standard (29 CFR 1910.134)?
Answer: Before being assigned to wear a respirator for any mold remediation work
OSHA 29 CFR 1910.134 requires medical evaluation before any worker is assigned to wear a respirator to ensure they are physically capable of wearing it safely.
Which moisture reading threshold in wood framing generally indicates an elevated risk for mold growth and requires remediation or drying before enclosure?
Answer: Above 19% moisture content
Wood moisture content above 19% is widely recognized as the threshold above which mold growth risk significantly increases and drying is required before enclosure.
In a multi-family residential building, mold was discovered in one unit's bathroom. What scope of investigation is required before limiting remediation to that single unit?
Answer: Inspect adjacent units, the unit above, and the unit below for moisture intrusion and associated mold
Mold in one unit often indicates moisture migration through shared walls, floors, or plumbing chases, requiring inspection of adjacent units to determine full scope.