Certified Industrial Hygienist (CIH): A person certified by the American Board of Industrial Hygiene.Change Rooms: Refers to the two chambers in the decontamination area used to change into and out of protective clothing.Chain-of-Custody: A legal concept involving documentation of the physical possession of a sample(s) from the moment it is collected, transported, analyzed, and ultimately stored in an archive.Cal-OSHA: State of California, Occupational Safety & Health Administration.Bridging Encapsulant: An encapsulant that forms a discrete layer on the surface of an in-situ asbestos.Breach: A rift or gap in the critical or secondary barriers that allow egress of air from the containment to outside, or vice versa.Breathing Zone: A hemisphere forward of the shoulders and head with a radius of approximately six to nine inches.Baseline: Refers to the background levels of asbestos monitored before abatement.Authorized Visitor: Designated employees or consultants for the Owner and representatives of any federal, state or local regulatory or other agency having jurisdiction over the project.For the purposes of determining worker respiratory protection, both the asbestiform and non-asbestiform of the above minerals, and any chemically treated or altered materials shall be considered as asbestos. Asbestos: Asbestos includes asbestiform varieties of serpentinite (chrysotile), riebeckite (crocidolite), cummingtonite-gunerite (amosite), anthophyllite, tremolite, and actinolite.Asbestos-Containing Material (ACM): Those manufactured products and construction materials including structural and mechanical building materials, as well as packings and gaskets that contain more than one percent (1.0%) asbestos by weight.This level represents the 8-hour time-weighted average of 0.1 fibers per cubic centimeter of air as measured by Phase Contrast Microscopy (PCM) analytical method. Asbestos Permissible Exposure Limit (PEL): A level of airborne fibers specified by OSHA as an occupational exposure standard for asbestos.
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