AHERA Management Planner key terms

Any material that contains more than one percent asbestos by weight, as determined using polarized light microscopy or an equivalent method. The designation drives most inspection, notification, and work-practice requirements.

Material assumed to contain asbestos because it was not sampled or because sampling results are unavailable or unreliable. It must be treated as ACM until proven otherwise by proper analysis.

Material that can be crumbled, pulverized, or reduced to powder by hand pressure when dry. Friability strongly influences fiber release potential and the level of response action required.

Material that cannot be crumbled or pulverized by hand pressure when dry. It may still become regulated or hazardous if cut, sanded, or otherwise disturbed.

Nonfriable material such as packings, gaskets, resilient floor coverings, and asphalt roofing products that contains asbestos. It becomes regulated when sanded, ground, cut, or abraded.

Nonfriable material other than Category I, such as cementitious siding or transite, that is unlikely to become crumbled by hand pressure. It is regulated when it is subjected to forces that may break it.

Collecting physical specimens of suspect material for laboratory analysis to determine asbestos content. Proper sampling protects the inspector and ensures results represent the material accurately.

A laboratory technique using polarized light and refractive index oils to identify asbestos minerals and estimate their percentage in bulk samples. It is the standard method for most bulk analysis.

A more precise PLM method that counts individual particles on a prepared slide to estimate asbestos percentage. It is often used when results near the one percent regulatory threshold must be resolved.

An area of material that is uniform in color, texture, and date of application, so that one set of samples can reasonably represent the entire area. It is the basic unit for sampling and assessment.

A room or group of rooms that share similar function and use, such as classrooms or boiler rooms. It is used to organize inspection findings and to compare exposure potential across building areas.

The process of evaluating each identified ACM to describe its condition, accessibility, and potential for disturbance. Results are recorded in writing and drive hazard ranking and response selection.

A classification of ACM condition, typically ranging from undamaged to significantly damaged or crumbling. The rating reflects visible deterioration, delamination, and physical damage.

An assessment step that scores ACM using factors such as condition, accessibility, and potential for disturbance. Scores help prioritize which materials need action first.

An estimate of how likely an ACM is to be touched, damaged, or otherwise agitated by building occupants or maintenance activities. It weighs accessibility, activity levels, and exposure pathways.

The degree to which an ACM can be reached or contacted by building occupants or workers. Materials in frequently used, reachable areas generally pose greater exposure potential than sealed or remote materials.

The discharge of asbestos fibers into air when material is damaged, disturbed, or deteriorating. It is the central concern linking material condition to human exposure.

The route by which asbestos fibers travel from a source to a person, such as inhalation of airborne fibers or ingestion of settled dust. Identifying pathways helps target controls.

A planned measure taken to address identified ACM, such as repair, encapsulation, enclosure, removal, or an operations and maintenance program. Selection depends on condition, hazard ranking, and use of the space.

Coating or sealing an ACM surface to prevent fiber release without removing the material. It is appropriate only when the material is well bonded and can support the coating.

Building an airtight, rigid barrier around ACM to isolate it from occupied space. The material remains in place, and the enclosure must be maintained and labeled.

Physically taking out ACM from the building, typically using regulated work practices. It is often chosen for significantly damaged or friable material or when renovation is planned.

A written program of work practices and training that keeps ACM in good condition and prevents fiber release during routine building activities. It is a common response action for material in good condition.

The written document describing how ACM will be managed during routine maintenance and custodial work. It covers work practices, training, cleaning, labeling, and recordkeeping for the program.

A written plan describing the location and condition of ACM, response actions, and schedules for implementation and reevaluation. It must be available to building occupants and updated as conditions change.

The person who interprets inspection and assessment findings and develops response actions and the management plan. The planner must have the required training and certification for the role.

A measure that permanently eliminates or isolates an asbestos hazard, including removal, encapsulation, or enclosure. It is distinct from routine maintenance and repair work.

A periodic recheck of ACM condition and the effectiveness of response actions, required at least every three years and more often for some materials. Findings may require plan updates.

A revision to the management plan when inspection findings, response actions, or building conditions change. Updates keep the plan accurate and must be communicated to affected parties.

Informing building occupants, guardians, and workers about the presence and location of ACM and about planned response actions. It ensures people can avoid disturbing material and understand planned work.

The ongoing exchange of information about asbestos hazards, response actions, and plan changes among owners, occupants, contractors, and workers. Clear communication supports safe behavior and compliance.

Maintaining inspection reports, sampling results, assessment records, training documents, and plan revisions for required periods. Records demonstrate compliance and support future reevaluation and updates.

A regulatory category covering friable ACM and certain nonfriable ACM that may become friable or is likely to be disturbed. The classification triggers specific handling and disposal requirements.

A work area where asbestos-related activities occur and where access is limited to trained and authorized persons. It is used to contain fibers and protect occupants and workers.

Respiratory protection, protective clothing, and other gear worn by workers to reduce exposure to asbestos fibers. PPE selection depends on the task and expected airborne fiber levels.

The verification that an abatement area is clean enough to be reoccupied, typically based on visual inspection and air sampling. It confirms that response actions met required standards.

Collecting and analyzing air samples to measure airborne fiber concentrations during work or after abatement. Results inform exposure assessment and whether clearance criteria are met.

Any building material that may contain asbestos because of its type, use, or appearance. Suspect materials must be sampled or presumed to be ACM.