Asbestos Abatement Containment Integrity Checklist

Are all seams of the polyethylene sheeting (poly) properly overlapped (minimum 12 inches) and taped with asbestos-rated duct tape?

Verify that the polyethylene sheeting is of adequate thickness (minimum 6-mil) and free from punctures, tears, or abrasions.

Confirm critical barriers (e.g., doorways, windows, HVAC vents) are sealed with multiple layers of poly and taped securely.

Is the floor completely covered with polyethylene sheeting, extending up the walls at least 12 inches, and properly sealed?

Are walls covered with polyethylene sheeting to a height sufficient to contain all asbestos-containing materials (ACM)?

Ensure poly sheeting is sealed tightly around the negative air machine exhaust duct to prevent air leakage.

Inspect all penetrations (pipes, conduits) through the poly for proper sealing with tape or caulk.

Conduct a thorough visual inspection of all poly surfaces for any signs of damage or deterioration.

Are sufficient quantities of appropriate repair materials (poly sheeting, tape) readily available on-site?

Are doorways protected with an airlock system consisting of at least two layers of poly sheeting?

Verify that the negative pressure enclosure (NPE) maintains a minimum negative pressure of -0.02 inches of water column relative to surrounding areas.

Confirm the manometer or pressure gauge is functioning correctly and properly calibrated.

Ensure the negative air machine (NAM) provides the required air changes per hour (ACH) as specified in the project plan.

Inspect the HEPA filter on the NAM for damage, proper seating, and loading. Replace if necessary.

Verify that the NAM exhaust is directed outside the building or to a location where re-entrainment is prevented.

Confirm the NAM is connected to a reliable power source and protected from power outages (e.g., backup generator).

Test the NAM's alarm system to ensure it functions correctly in the event of pressure loss or equipment failure.

Review the NAM maintenance log to ensure regular maintenance has been performed according to the manufacturer's recommendations.

Observe air flow patterns within the containment to ensure proper direction towards the NAM intake.

Are spare HEPA filters readily available on-site for immediate replacement?

Verify the DCU is properly configured with a clean room, shower room, and equipment room, in that order.

Ensure each chamber of the DCU has an airlock system to prevent the escape of asbestos fibers.

Confirm the shower provides adequate hot water (minimum 100°F) and cold water for effective decontamination.

Verify the shower drainage system is functioning properly and connected to an appropriate wastewater disposal system.

Ensure adequate supplies of soap, shampoo, and clean towels are available in the shower room.

Confirm that asbestos-contaminated clothing and equipment are properly bagged and labeled for disposal.

Inspect the DCU for cleanliness and proper maintenance. Clean regularly to prevent fiber accumulation.

Are clear and concise decontamination procedures posted within the DCU?

Visually inspect the DCU structure for any damage or leaks that could compromise its effectiveness.

Ensure adequate lighting is provided in all areas of the DCU for safe and effective use.

Verify that a written air monitoring plan is in place and being followed according to regulatory requirements.

Confirm that personal air sampling is being conducted for all employees potentially exposed to asbestos fibers.

Ensure area air samples are collected outside the containment to monitor for potential fiber release.

Verify that air samples are being analyzed by a qualified laboratory using Phase Contrast Microscopy (PCM) or Transmission Electron Microscopy (TEM).

Review air sample results to ensure employee exposures are below the Permissible Exposure Limit (PEL) and Excursion Limit.

Confirm that clearance air monitoring is performed after abatement is complete and before the containment is removed.

Verify that clearance air monitoring meets the required criteria (e.g., <0.01 f/cc by TEM) before containment removal.

Ensure that all air monitoring records are properly maintained and readily available for review.

Verify that air sampling equipment is properly calibrated and maintained.

Confirm that a competent person is overseeing the air monitoring program.