Modified Engineering & Work Practice Controls

Employers may use different or modified engineering and work practice controls under the following conditions:

• If they can demonstrate that employee exposure will not exceed the PEL under any anticipated circumstances; and
• If a competent person evaluates the work area, the projected work practices, and the engineering controls and certifies, in writing, that these different or modified controls will reduce all employee exposure to or below the PELs under all expected conditions of use and that they meet the requirements of the standard. This evaluation must include, and be based on, data representing employee exposure during use of the controls under conditions closely resembling those of the current job. Also, the employees participating in the evaluation must not have better training and more experience than that of the employees who are to perform the current job.

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