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Anyone who samples asbestos-containing materials should have as much information as possible on the handling of asbestos before sampling, and at a minimum, should observe the following procedures:
| • | Make sure no one else is in the room when sampling is done.
| | • | Wear disposable gloves or wash hands after sampling.
| | • | Shut down any heating or cooling systems to minimize the spread of any released fibers.
| | • | Do not disturb the material any more than is needed to take a small sample.
| | • | Place a plastic sheet on the floor below the area to be sampled.
| | • | Wet the material using a fine mist of water containing a few drops of detergent before taking the sample. The water/detergent mist will reduce the release of asbestos fibers.
| | • | Carefully cut a piece from the entire depth of the material using, for example, a small knife, corer, or other sharp object. Place the small piece into a clean container (for example, a 35 mm film canister, small glass or plastic vial, or high quality resealable plastic bag).
| | • | Tightly seal the container after the sample is in it.
| | • | Carefully dispose of the plastic sheet. Use a damp paper towel to clean up any material on the outside of the container or around the area sampled. Dispose of asbestos materials according to state and local procedures.
| | • | Label the container with an identification number and clearly state when and where the sample was taken.
| | • | Patch the sampled area with the smallest possible piece of duct tape to prevent fiber release.
| | • | Send the sample to an EPA-approved laboratory for analysis. The National Institute for Standards and Technology (NIST) has a list of these laboratories. You can get this list from the Laboratory Accreditation Administration, NIST, Gaithersburg, MD 20899 (telephone 301-975-4016). Your state or local health department may also be able to help.
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How to manage an asbestos problem
If the asbestos material is in good shape and will not be disturbed, do nothing! If it is a problem, there are two types of corrections: repair and removal.
Repair usually involves either sealing or covering asbestos material.
Sealing (encapsulation) involves treating the material with a sealant that either binds the asbestos fibers together or coats the material so fibers are not released. Pipe, furnace, and boiler insulation can sometimes be repaired this way. This should be done only by a professional trained to handle asbestos safely.
Covering (enclosure) involves placing something over or around the material that contains asbestos to prevent release of fibers. Exposed insulated piping may be covered with a protective wrap or jacket.
With any type of repair, the asbestos remains in place. Repair is usually cheaper than removal, but it may make later removal of asbestos, if necessary, more difficult and costly. Repairs can either be major or minor.
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