Indoor Air sciences CSMI Practice Exam

According to IICRC S520, what does achieving Condition 1 ensure?

1. All mold spores are eliminated

2. Presence of normal fungal ecology

3. No visible mold growth

4. All occupants are safe to return

The correct answer is: Presence of normal fungal ecology

Achieving Condition 1, as defined in IICRC S520, indicates the presence of normal fungal ecology in a building or environment. This condition suggests that the levels of mold and fungi present are within acceptable limits and are considered typical for the geographic area, meaning that there is no unusual presence of mold that would cause concern. Under Condition 1, while there may still be some mold spores in the environment, they do not pose a health risk or suggest contamination, as they are part of the naturally occurring fungal ecosystem. Thus, this state does not involve the complete elimination of mold spores, nor does it imply there is no visible mold growth or that occupants are guaranteed to be safe to return, since those factors can vary. Therefore, the statement that achieving Condition 1 ensures the presence of normal fungal ecology accurately reflects the definition and implications of that condition.