What is the Major Fiber Release Threshold in schools?

• A. 32 sf or 50 lf
• B. 3 sf or 3 lf
• C. 160 sf or 260 lf
• D. 1 sf or 1 lf

Answer: (B)

The major fiber release threshold is the amount of asbestos-containing material whose damage is considered extensive enough to require formal actions. In schools, more than 3 square feet of damaged material—or more than 3 linear feet of damage—constitutes a major fiber release. When this threshold is met or exceeded, you escalate to remedial actions such as containment, removal or encapsulation by licensed workers, area containment, and appropriate notifications and inspections after cleanup. Smaller releases are treated as minor releases and handled with standard cleanup under the school’s AHERA management plan. The other options don’t match this standard threshold, since they represent amounts either well below or well above the typical major release boundary.