// CODE SNIPPET
1926.1101(f)(2)(iii) Negative Exposure Assessment
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For any one specific asbestos job which will be performed by employees who have been trained in compliance with the standard, the employer may demonstrate that employee exposures will be below the PELs by data which conform to the following criteria;
Objective data demonstrating that the product or material containing asbestos minerals or the activity involving such product or material cannot release airborne fibers in concentrations exceeding the TWA and excursion limit under those work conditions having the greatest potential for releasing asbestos; or
Where the employer has monitored prior asbestos jobs for the PEL and the excursion limit within 12 months of the current or projected job, the monitoring and analysis were performed in compliance with the asbestos standard in effect; and the data were obtained during work operations conducted under workplace conditions "closely resembling" the processes, type of material, control methods, work practices, and environmental conditions used and prevailing in the employer's current operations, the operations were conducted by employees whose training and experience are no more extensive than that of employees performing the current job, and these data show that under the conditions prevailing and which will prevail in the current workplace there is a high degree of certainty that employee exposures will not exceed the TWA and excursion limit; or
The results of initial exposure monitoring of the current job made from breathing zone air samples that are representative of the 8-hour TWA and 30-minute short-term exposures of each employee covering operations which are most likely during the performance of the entire asbestos job to result in exposures over the PELs.
Related Code Sections
1926.1101(f)(2)(iii) Toxic and Hazardous Substances, Negative Exposure Assessment
demonstrate that employee exposures will be below the PELs by data which conform to the following criteria ...
OSHA 1926 Construction > Z Toxic and Hazardous Substances > 1926.1101 Asbestos > 1926.1101(f) Exposure Assessments and Monitoring > 1926.1101(f)(2) Initial Exposure Assessment > 1926.1101(f)(2)(iii) Negative Exposure Assessment
1926.1101(h)(3)(iv) Toxic and Hazardous Substances, Employers Must Provide Employees With:
area performing Class I asbestos work for which a negative exposure assessment is not available and the exposure assessment indicates that the exposure ...
OSHA 1926 Construction > Z Toxic and Hazardous Substances > 1926.1101 Asbestos > 1926.1101(h) Respiratory Protection > 1926.1101(h)(3) Respirator Selection > 1926.1101(h)(3)(iv) Employers Must Provide Employees With:
1926.1101(h)(1)(iv) Toxic and Hazardous Substances,
Class II and III asbestos work for which a negative-exposure assessment has not been conducted ...
OSHA 1926 Construction > Z Toxic and Hazardous Substances > 1926.1101 Asbestos > 1926.1101(h) Respiratory Protection > 1926.1101(h)(1) General > 1926.1101(h)(1)(iv)
1926.1101(h)(3) Toxic and Hazardous Substances, Respirator Selection
: Class II or Class III asbestos work for which no negative exposure assessment is available ...
OSHA 1926 Construction > Z Toxic and Hazardous Substances > 1926.1101 Asbestos > 1926.1101(h) Respiratory Protection > 1926.1101(h)(3) Respirator Selection
1926.1101(h)(1) Toxic and Hazardous Substances, General
that is not performed using wet methods, except for removal of ACM from sloped roofs when a negative-exposure assessment has been conducted and ACM ...
OSHA 1926 Construction > Z Toxic and Hazardous Substances > 1926.1101 Asbestos > 1926.1101(h) Respiratory Protection > 1926.1101(h)(1) General