CMI Remediation Protocols & Post-Remediation Verification Flashcards
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Read the first 6 CMI Remediation Protocols & Post-Remediation Verification flashcards as text
According to the IICRC S520 standard, what are the three primary remediation levels based on contamination area?
Answer: Level 1 (≤10 sq ft), Level 2 (10–100 sq ft), Level 3 (>100 sq ft)
IICRC S520 defines Level 1 as ≤10 sq ft (limited), Level 2 as 10–100 sq ft (mid-range), and Level 3 as >100 sq ft (extensive), with corresponding PPE and containment requirements.
What is the purpose of establishing 'containment' during mold remediation?
Answer: To prevent cross-contamination of mold spores to unaffected areas during the disturbance of mold growth
Containment barriers with negative air pressure prevent disturbed mold spores from migrating to clean areas of the building during remediation activities.
What is the role of negative air pressure inside a remediation containment area?
Answer: To ensure air flows from clean areas into the containment zone rather than from the contaminated zone outward
Maintaining negative pressure inside containment ensures that any air leakage travels inward (clean to contaminated) rather than outward, preventing spore migration to unaffected spaces.
Which piece of equipment is used to create and maintain negative air pressure inside a mold remediation containment area?
Answer: HEPA-filtered negative air machine (NAM)
A HEPA-filtered negative air machine exhausts air from the containment zone through HEPA filtration to the exterior, creating negative pressure while filtering out spores before discharge.
According to best practices, should biocides (e.g., bleach) be used as the primary remediation method for mold on porous materials?
Answer: No — biocides do not penetrate porous materials adequately; physical removal is required
On porous materials like drywall and wood, biocides cannot penetrate deeply enough to kill all mold; physical removal (cutting out and bagging) is the required remediation approach.
What does 'post-remediation verification' (PRV) testing confirm?
Answer: That the remediated area has been returned to a condition of normal fungal ecology comparable to an unaffected reference area
Post-remediation verification confirms that the work area has been cleaned to a level of normal fungal ecology by comparing remediated area samples to outdoor reference and unaffected indoor reference samples.