29 CFR Part 1926.1101

For the specifications, limitations, and recommended work practices of these required control methods, refer to Occupational Exposure to Asbestos, 29 CFR Part 1926.1101. Employers may use different or modified engineering and work practice controls if they adhere to the following provisions:

• The control method encloses, contains, or isolates the process or source of airborne asbestos dust, or captures and redirects the dust before it enters into the employees' breathing zone
• A certified industrial hygienist or licensed professional engineer qualified as a project designer evaluates the work area, the projected work practices, and the engineering controls and certifies, in writing, that based on evaluations and data the planned control method adequately reduces direct and indirect employee exposure to, or below, the permissible exposure limit under worst-case conditions. The planned control method also must prevent asbestos contamination outside the regulated area, as measured by sampling meeting the requirements of the EPA Asbestos in Schools rule or perimeter monitoring

The employer sends a copy of the evaluation and certification to the OSHA National Officebefore using alternative methods to remove more than 25 linear or 10 square feet of thermal system insulation or surfacing material.

OSHA National Office
Office of Technical Support, Room N3653
200 Constitution Avenue, N.W.
Washington, DC 20210

To learn more about Construction Asbestos Safety visit our Construction Asbestos Safety Online Training web page.