Removal of Contaminated Structural Materials
Underlying materials are considered to be all materials attached to the structure, including but not limited to: subfloors, plywood floor coverings, trim pieces, doors, interior and exterior walls; framed concrete block and IBF; wall coverings, ceilings, attached fixtures, floor or ceiling vents, and roof supports. Contaminated underlying material may be porous in nature, allowing fluids to be absorbed into the material; thus, the usual cleaning methods and the use of an antimicrobial (biocide) may not completely remediate the material. All contaminated surface areas should be cleaned before the removal of materials to minimize risks associated with airborne contaminants and physical cross-contamination. As appropriate, materials should then be cut into a suitable size to fit into biohazard containers. Material removal should extend at least 6 inches (15 cm) beyond visible contamination to ensure complete removal.