- Abatement: Process of controlling fiber release from ACMs including encapsulation, enclosure, controlled renovation procedures, removal, clean-up and disposal.
- ACM: Asbestos-containing material
- Aggressive Sampling: Air sampling either during or following the agitation of the air.
- AHERA: Asbestos Hazard Emergency Response Act (40 CFR Part 763).
- Airlock: A system for permitting ingress and egress with minimum air movement between a contaminated area and uncontaminated areas. Typically consists of two curtained or gasketed doorways separated by a distance of at least six feet such that one passes through one doorway into the airlock, allowing the doorway to close off the opening. This airlock must be maintained in uncontaminated condition at all times.
- Ambient Air Quality: The quality of air (in terms of airborne fiber content) that is present in a given space.
- Area Monitoring: Sampling of airborne asbestos fiber concentrations within the work area and outside the work area. Sampling shall represent airborne concentrations that may reach the breathing zone.
- Asbestos Fibers: Refers to asbestos fibers having an aspect ratio of 3:1, and those fibers longer than
five (5) microns.
- Asbestos Permissible Exposure Limit (PEL): A level of airborne fibers specified by OSHA as an occupational exposure standard for asbestos. 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-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.
- Asbestos: Asbestos includes asbestiform varieties of serpentinite (chrysotile), riebeckite (crocidolite), cummingtonite-gunerite (amosite), anthophyllite, tremolite, and actinolite. 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.
- 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.
- Baseline: Refers to the background levels of asbestos monitored before abatement.
- Breathing Zone: A hemisphere forward of the shoulders and head with a radius of approximately six to nine inches.
- Breach: A rift or gap in the critical or secondary barriers that allow egress of air from the containment to outside, or vice versa.
- Bridging Encapsulant: An encapsulant that forms a discrete layer on the surface of an in-situ asbestos
- Cal-OSHA: State of California, Occupational Safety & Health Administration.
- 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.
- Change Rooms: Refers to the two chambers in the decontamination area used to change into and out of protective clothing.
- Certified Industrial Hygienist (CIH): A person certified by the American Board of Industrial Hygiene.
- Clean Room: An uncontaminated area or room that is part of the worker decontamination enclosure system, with provisions for storage of workers’ street clothes and protective equipment.
- Clearance Level: Clearance level for samples analyzed by PCM will be less than 0.01 fibers per cubic centimeter of air and for TEM will be less than 70 structures per square millimeter (<70 s/mm2). Samples may be collected by aggressive or non-aggressive sampling methods and the minimum air volume shall be 1,200 liters.
- Competent Person: One who is capable of identifying existing and predictable hazards and who has the authority to take prompt corrective measures to eliminate them.
- Critical Barrier: A unit of temporary construction that provides the only separation between asbestos work area and an adjacent potential occupied space. This includes the decontamination unit, perimeter walls, ceilings, penetrations and any temporary critical barriers between the work area and the uncontaminated environment.
- CSLB: Contractors State Licensing Board
- Decontamination Area: Area which is constructed to provide the means for workers to store clothing, equipment and other articles, and to properly remove contamination upon concluding work activities that result in exposure to these hazardous materials.
- DOP: Dioctylphthalate, the challenge aerosol used to perform on-site leak testing of HEPA filtration equipment.
- DOT: Federal Department of Transportation.
- DOSH: Division of Occupational Safety & Health (see also Cal-OSHA)
- Decontamination Unit: Refers to system of airlocks used to decontaminate personnel, waste bags, equipment, etc. when exiting the work area. A decontamination unit shall be set up for each containment area.
- Demolition: The wrecking or taking out of any load-supporting structural member of a facility together with any related handling operations or the intentional burning of any facility.
- Disposal Bag: Minimum six (6) mil thick leak-tight plastic bags used for transporting asbestos waste from a work area to disposal or shipping container. Each disposal bag must have required labels according to Title 8 CCR 1529 (Cal-OSHA asbestos rule), 5194 (HAZCOM). RACM waste must be additionally labeled according to 49 CFR 171-179 (USDOT), and 40 CFR 61 Subpart M (NESHAP). Hazardous waste disposal bags must be labeled with generator’s name, address, site location, generator number, and the following information:
- CONTAINS ASBESTOS FIBERS
- AVOID CREATING DUST
- MAY CAUSE CANCER
- CAUSES DAMAGE TO LUNGS
- DO NOT BREATHE DUST
- AVOID CREATING DUST
- RQ WASTE ASBESTOS, 9 NA 2212 PG III (Class 9 placard)
- HAZARDOUS WASTE
- STATE AND FEDERAL LAW
- PROHIBITS IMPROPER DISPOSAL
- IF FOUND, CONTACT THE NEAREST
- POLICE OR PUBLIC SAFETY
- AUTHORITY OR THE CALIFORNIA
- DEPARTMENT OF TOXIC SUBSTANCES CONTROL
that can be crumbled, pulverized or reduced to powder by hand pressure when dry.
greater in diameter at 99.97 percent efficiency.