The NORMI™ Standard for Remediation is clear…

When visible mold (of any variety) exceeds 20 square feet either cumulative or contiguous, viable or not.

When visible mold is identified as Stachybotrys it must be remediated whether it is viable or not.

When Stachybotrys is found, any visible mold, regardless of the variety or viability, must also be remediated.

When visible mold (of any variety) is present and viable, and the Wagner Moisture Meter readings on that spot exceed 17% moisture content, that specific area must be remediated.

The NORMI™ Standard for Sanitization is…

When no visible mold is present the environment can be sanitized.

When visible mold is NOT Stachybotrys and is less than 20 square feet either cumulative or contiguous and no moisture content.