An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

Under the Asbestos Hazard Emergency Response Act (AHERA), do you have to label enclosed or encapsulated asbestos-containing building material ACBM in routine maintenance areas?

Yes. 40 CFR part 763.95(a) of the asbestos in schools rule states that “[t]he local education agency shall attach a warning label immediately adjacent to any friable and non-friable ACBM and suspected ACBM assumed to be ACM located in routine maintenance areas (such as boiler rooms) at each school building. This shall include:

  • Friable ACBM that was responded to by a means other than removal; and
  • ACBM for which no response action was carried out.”