Which condition is true for Category 1 nonfriable ACM to be considered RACM?

Category 1 nonfriable asbestos-containing material (ACM) is typically considered nonhazardous because it is not easily crumbled or reduced to powder when dry. However, to be categorized as Regulated Asbestos-Containing Material (RACM), one specific condition must be met: the material must have become friable. When nonfriable ACM deteriorates or is disturbed in such a way that it can be crumbled, it is now in a form that can release fibers into the air, posing a health risk.

This transition from nonfriable to friable is significant because it changes the handling and removal requirements under regulations. The other options do not relate directly to the conditions that classify ACM appropriately regarding its potential hazard status or legal handling requirements. For example, merely being used in old buildings or being treated with chemicals doesn't affect its classification if the material remains nonfriable. Likewise, being new and under construction does not inherently render the material friable; friability depends on the condition and treatment of the material.