National Emissions Standards for Hazardous Air Pollutants
In accordance with Section 112 of the Clean Air Act (CAA)
of 1970, the EPA established National Emissions Standards for Hazardous Air
Pollutants (NESHAP) to protect the public. Asbestos was one of the first hazardous air pollutants regulated under Section 112.
The Asbestos NESHAP (40 CFR 61, Subpart M)
addresses milling, manufacturing and fabricating operations, demolition
and renovation activities, waste disposal issues, active and inactive
waste disposal sites and asbestos conversion processes.
Only some of the many asbestos-containing building materials (ACBMs) have been
banned. Three bans on ACBMs were set forth by the NESHAP regulations:
- Spray-applied insulating materials - 1973
- Pre-molded insulation, if friable - 1976
- Spray-applied decorative materials - 1978
The Asbestos NESHAP requires facility owners and/or operators
involved in demolition and renovation activities to control
emissions of particulate asbestos to the outside air because no safe
concentration of airborne asbestos has ever been established.
Accordingly, NESHAP requires the identification of
abestos-containing materials that may be disturbed in buildings
before renovation or demolition. Notifications prior to asbestos
abatement work are also required. The primary method used to control
asbestos emissions is to adequately wet the Asbestos Containing
Material (ACM) with a wetting agent prior to, during and after