This technical manual provides detailed guidance to building owners, asbestos program managers, and operations and maintenance (O&M) workers for managing asbestos-containing materials (ACM) in buildings. The manual addresses four different types of ACM found in buildings and three different levels of precaution which may be warranted by specific building conditions. A new regulatory appendix summarizes key regulations (OSHA, EPA, and DOT) affecting asbestos O&M work. Sections of the manual include: Initiating an O&M Program; Asbestos Program Manager General Procedures; Worker General Procedures; Surfacing Materials Work Practices; Thermal Systems Insulation Work Practices; Miscellaneous Materials Work Practices; and Resilient Flooring Work Practices. (CR)