662 HAZWOPER for General Site Workers III

Regulated Areas

All Class I, II, and III asbestos work must be done within regulated areas. The following are required for all regulated areas:

• Only authorized personnel may enter.
• The designated competent person supervises all asbestos work performed in the area. Employers must mark the regulated area in any manner which minimizes the number of persons within the area and protects persons outside the area from exposure to airborne asbestos.
• Critical barriers or negative-pressure enclosures may mark the regulated area.

• Posted warning signs marking the area must be easily readable and understandable. The signs must bear the information in the image to the right.
• Where employees in a regulated area are required to wear respirators under OSHA's asbestos standard, employers must supply each person entering that area with an appropriately selected respirator.
• Employees must not eat, drink, smoke, chew tobacco or gum, or apply cosmetics in regulated areas.
• The employer performing work in a regulated area must inform other employers on site about:

• the nature of the work;
• regulated-area requirements; and
• measures taken to protect on-site employees.

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