An option only for jobs performed by employees who have been trained in compliance with the standard
Data to demonstrate that employee exposure will be below the PELs must conform to the following types:
- Objective data that the product, mineral, or activity cannot release airborne fibers in concentration > PELs under the most severe conditions
- Monitoring data obtained within prior 12 months for work operations/conditions that "closely resemble" current operations and were conducted by employees no more trained/experienced than current employees
- Results of initial exposure monitoring of the current job