Glossary of Terms

Glossary of Terms


Adequately Wet

The condition of being sufficiently mixed or penetrated with amended water to prevent the release of particulates or visible emissions. The process by which an adequately wet condition is achieved is by using a dispenser or water hose with a nozzle that permits the use of a fine, low-pressure spray or mist.



The means of removal or disturbance of building material by sanding, abrading, grinding or other method that breaks, crumbles, or disintegrates intact ACM.

Amended Water

The water to which surfactant (wetting agent) has been added to increase the ability of the liquid to penetrate ACM.



A mineral fiber found in certain types of rocks as Chrysotile, Amorite and Crocidolite. Used as a strengthener, insulator and binding agent. Long known as a carcinogen when ingested though it is unknown if there are any safe levels of asbestos in a material.


Asbestos-Containing Material

Both friable asbestos containing material or Class I no friable asbestos-containing material. ASBESTOS-CONTAINING WASTE MATERIAL is any waste that contains commercial asbestos and that is generated by a source subject to the provisions of this rule.  ACM which is friable has a high probability of becoming friable, or has been subjected to sanding, grinding, cutting, or abrading, and the waste generated from its disturbance, such as asbestos waste from control devices, particulate asbestos material.


Certified Industrial Hygienist

One certified in the practice of industrial hygiene by the American Board of Industrial Hygiene.


Class I Nonfriable Asbestos-Containing Material

 The material containing more than one percent (1%) asbestos when dry, can be broken, crumbled, pulverized, or reduced to powder in the course of demolition or renovation activities. Actions which may cause material to be broken, crumbled, pulverized,  include physical wear and disturbance by mechanical force, but not limited to, sanding, sandblasting, cutting or abrading. Class I nonfriable asbestos-containing material includes, fractured or crushed asbestos cement products, transit materials,,roofing tiles, cement water pipes and resilient floor covering.


Class II Nonfriable Asbestos-Containing Material

 All other material containing more than one percent (1%) asbestos is neither friable nor Class I nonfriable.


Closely Resemble

Meaning that the major workplace conditions which have contributed to the levels of historic asbestos exposure, are no more protective than conditions of the current work place.


Competent Person

In addition to one who is capable of identifying existing and predictable hazards in the surroundings or working  which are unsanitary, hazardous, or dangerous to employees, and who has authorization to take prompt corrective measures to eliminate them, 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 work who is specially trained in a training course which meets the criteria of EPA’s Model Accreditation Plan  for supervisor,  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.


Critical Barrier

One or more layers of plastic sealed over all openings 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.



 The wrecking or taking out of any load-supporting structural member of a facility and related handling operations or the intentional burning of any facility.



 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.


Emergency Demolition

 The demolition ordered by a governmental agency for the purpose of eliminating peril to the safety of persons, property or the environment resulting from hazards such as collapse, fire, crime, disease, or other hazard as determined by the Executive Officer.



The ability to pulverize a material under hand pressure


Glove bag

 An impervious plastic bag-like enclosure affixed around not more than a 60 x 60 inch asbestos-containing material, with glove-like appendages through which material and tools may be handled.


HEPA filter

High Efficiency Particulate Air filter, which filters out 99.97% of contaminants such as asbestos, lead or mold spores.


Industrial Hygienist

The ACM has not crumbled, been pulverized, or otherwise deteriorated so that the asbestos is no longer likely to be bound with its matrix.



The condition whereby any contained solids or liquids are prevented from escaping or spilling out.


Nonscheduled Renovation Operation

 The renovation operation necessitated by the routine failure of equipment, which is expected to occur within a given calendar year based on past operating experience, but for which an exact date cannot be predicted.


Outside Air

The air outside of the facility or outside of the isolated work area



“Presumed Asbestos Containing Material” means thermal system insulation and surfacing material found in buildings constructed no later than 1980.


Planned Renovation

The renovation operation, in which the amount of ACM that will be removed or stripped within a given period of time can be predicted. Individual nonscheduled renovation operations are included if a number of such operations can be predicted to occur during a given period of time based on operating experience.


Residential Single Unit Dwelling

A structure that contains only one residential unit. Apartment buildings, townhouses, and condominiums are not residential single unit dwellings.


Sick building syndrome

The condition where spores and molds infiltrate an air flow system and potentially cause sickness to tenants of the areas.



Many molds are naturally occurring following a water damage, and most are relatively harmless though the Stachybotrys mold can be deadly when disturbed or improperly cleaned.



The taking off of ACM from any part of a facility or facility

Structural Member

Any load-supporting member of a facility, such as beams and load-supporting walls; or any nonload-supporting member, such as ceilings and no-load-supporting walls.

 Surfacing Materials

A material either sprayed or spread onto a substrate.


Thermal System insulation

Thermal system insulation ACM” is thermal system insulation which contains more than 1% asbestos. When ACM is applied to pipes, fittings, boilers, breeching, tanks, or other structural components to prevent heat loss or gain.




© Bigappleasbestos 2016 All Rights Reserved.

We serve in NY,NJ,CT.
We are fully licensed and insured.
Manhattan address:
60 Broad St New York NY 1004

Brooklyn address:
1630 Ocean Avenue Brooklyn NY 11230 Suite 1Q