Mr. Swig said it was possible that only a few bags of asbestos-containing materials had found their way to the project.

Additionally, the presence of asbestos-containing materials throughout the building made any repairs or other work to the building highly disruptive.

Intact, undisturbed asbestos-containing materials generally do not pose a health risk.

Often it is when asbestos-containing materials are disturbed that they become hazardous.

When asbestos-containing material is damaged or disintegrates, microscopic fibers are dispersed into the air.

Removal of asbestos-containing materials is not always optimal because the fibers can be spread into the air during the removal process.

A management program for intact asbestos-containing materials is often recommended instead.

It occurs after long-term, heavy exposure to asbestos from asbestos-containing materials in structures.

Elevated levels can occur in homes where asbestos-containing materials are damaged or disturbed.

Conducted the building renovation without taking precautions for the potential presence of asbestos-containing material.