NYC-WTC_000233286

NYC 9/11 Public Portal Document

up remaining asbestos fibers, then air samples are collected for appropriate analysis to determine representative airborne fiber concentrations.

(ap) Commissioner. The Commissioner of the New York State Department of Labor.

(aq) Containment. The negative-pressurized enclosure within the restricted area, which establishes the regulated abatement work area and surrounds the location where the asbestos abatement is actually taking place.

(ar) Critical Barrier. Barriers that seal off all openings within the defined regulated abatement work area, including but not limited to operable windows and skylights, doorways, ducts, grills, diffusers and any other penetrations to surfaces within the regulated abatement work area.

(as) Curtained Doorway. An assembly which consists of at least three (3) overlapping sheets of 6-mil fire retardant plastic over an existing or temporarily framed doorway, used to separate the chambers within the decontamination system enclosures and to inhibit airflow if the negative air ventilation system shuts down.

(at) Decontamination System Enclosure. A series of connected rooms, usually attached to the regulated abatement work area, for the decontamination of persons, materials and equipment.

(au) Demolition. The wrecking or removal of any load-supporting structural member of a building or structure.

(av) Department. The New York State Department of Labor.

(aw) Disturbance. Any activities that disrupt the matrix of ACM or PACM, or generate debris, visible emissions or airborne asbestos fibers from ACM or PACM. This includes moving of friable asbestos containing material from one place to another.

(ax) Emergency. An unexpected, unanticipated or unforeseen occurrence, including but not limited to, a steam, chemical, gas or water line rupture, a boiler failure, a building/structure collapse, or act of nature which may pose:

(1) an imminent danger to the health and safety of the public; or

(2) an asbestos-related risk to the health and safety of the public from release of asbestos fibers.

(ay) Emergency Asbestos Project. An asbestos project which is necessary to respond to an emergency.

(az) Encapsuiant (Seaiant) or Encapsulating Agent. A liquid material, which can be applied to asbestos material and which prevents the release of asbestos

12 NYCRR56 Subpart 2, Page 11

CITY_21MC100_003235031

NYC-WTC_000233297