OSHA Asbestos Standard for the Construction Industry

U.S. Department of Labor
Occupational Safety & Health Administration
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Isolation of HVAC systems in regulated area (double layer of 6 mil plastic or equivalent)
Impermeable dropcloths on surfaces beneath removal activity
Covering all objects within regulated area with impermeable materials
Where employer cannot produce a negative exposure assessment, or where PEL is exceeded, ventilation of the regulated area to move air from the employee's breathing zone toward HEPA-filtered collection device

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