Aggressive-method - ANSWERSmeans removal or disturbance of building material by
sanding, abrading, grinding or other method that breaks, crumbles, or disintegrates
intact ACM
Amended water - ANSWERSmeans water to which surfactant (wetting agent) has been
added to increase the ability of liquid to penetrate ACM
Abestos Containing Material (ACM) EPA - ANSWERSmeans any material more than
one percent asbestos
Assistant Secretary - ANSWERSmeans the assistant secretary of labor for occupational
safety and health, US Department of labor, or designee
Authorized Person - ANSWERSmeans any person authorized by the employer and
required by work duties to be present in regulated areas
Building/facility owner - ANSWERSis the legal entity, including a lessee, which
exercises control over management and record keeping functions relating to a building
and facility in which activities covered by this standard take place
Certified Industrial Hygienist (CIH) - ANSWERSmeans one certified in the practice of
industrial hygiene by the American Board of Industrial Hygiene
Chief - ANSWERSmeans the chief of Division of Occupational Safety and Health, P.O.
Box 420603, San Francisco, CA 94142
Class I asbestos work - ANSWERSmeans activities involving the removal of TSI and
surfacing ACM and PACM
Class II asbestos work - ANSWERSmeans activities involving the removal of ACM
which IS NOT thermal system insulation or surfacing material. This includes, but is not
limited to, the removal of asbestos containing wallboard, floor tile and sheeting, roofing
and siding singles, and construction mastics
Class III asbestos work - ANSWERSmeans REPAIR AND MAINTENANCE operations
where "ACM", including TSI and surfacing ACM & PACM, is likely to be disturbed
Class IV asbestos work - ANSWERSmeans maintenance and CUSTODIAL
ACTIVITIES during which employees contact but do not disturb ACM or PACM and
activities to clean up dust, waste, & debris resulting from Class I,II,III activities
, Clean Room - ANSWERSmeans an uncontaminated room having favilities for the
storage of employees' street clothing & uncontaminated materials & equipment
Closely Resemble - ANSWERSmeans that the major workplace conditions which have
contributed to the levels of historic asbestos exposure, are no more protective than
conditions of the current workplace
Competent Person - ANSWERSmeans in addition to one who is capable of identifying
existing & predictable hazards in the surroundings or working conditions which are
unsanitary, hazardous, or dangerous to employees, and who has authorization to take
prompt corrective measures to eliminate them, one who is capable of identifying existing
asbestos hazards in the workplace and selecting the appropriate control strategy for
asbestos exposure, who has the authority to take prompt corrective measures to
eliminate them: in addition, for Class I and Class II (40 CFR part 763) for supervisor, or
its equivalent and, for Class III and Class IV work, who is trained in a manner consistent
with EPA requirements for training of local education agency maintenance and custodial
staff as set forth at 40 CFR 763.92(a)(2). Note: For operations involving more than 100
square feet of construction material as defined in subsection (r) of this section the
competent person may fulfill the requirement contained in Section 341.9 to specify a
certified supervisor for asbestos related work
Critical Barrier - ANSWERSmeans one or more layer of plastic sealed over all opening
into a work area or any other similarly placed physical barrier sufficient to prevent
airborne asbestos in a work area from migrating to an adjacent area
Decontamination area - ANSWERSmeans an enclosed area adjacent and connected to
the regulated area and consisting of an equipment room, shower area, and clean room,
which is used for the decontamination of workers, materials, and equipment that are
contaminated with asbestos.
Demolition - ANSWERSmeans the wrecking or taking out of any load- supporting
structural member and any related razing, removing, or stripping of asbestos products
Director - ANSWERSmeans the director, National Institute for Occupational Safety and
Health, US Department of Health and Human Services, or designee
Disturbance - ANSWERSmeans activities that disrupt the matrix of ACM or PACM,
crumble or pulverize ACM or PACM, or generate visible debris from ACM or PACM.
Disturbance includes cutting away small amounts of ACM and PACM, no greater than
the amount which can be contained in one standard sized glove bag or waste bag in
order to access a building component. In no event shall the amount of ACM or PACM
so disturbed exceed that which can be contained in one glove bag or waste bag which
shall not exceed 60 inches in length and width.
Employee exposure - ANSWERSmeans that exposure to airborne asbestos that would
occur if employee were not using respiratory protective equipment