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ND Asbestos Abatement practice questions

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Question 1Asbestos Abatement Worker

Under North Dakota's asbestos abatement worker requirements, what must a worker hold before performing abatement on a regulated project?

  1. A current state-issued asbestos abatement worker certificate Correct answer.
  2. A federal EPA accreditation card only
  3. A hazardous waste transporter permit
  4. A general contractor license

Explanation

North Dakota requires abatement workers to be certified by the state health department before working on regulated asbestos projects. Federal EPA accreditation alone does not satisfy state worker certification requirements. Certification is project-role specific, so a general contractor or transporter credential does not cover abatement work.

Question 2Asbestos Abatement Worker

What does the term 'regulated asbestos-containing material' (RACM) indicate in the context of an abatement project?

  1. Material that has been tested and found to contain no asbestos fibers
  2. Any material that contains more than 1 percent asbestos regardless of condition
  3. Material that is only regulated when it is located in a school building
  4. Material that must be removed and handled under asbestos regulations because of its condition and friability Correct answer.

Explanation

RACM describes asbestos-containing material that is friable or likely to become friable and is therefore subject to removal and handling rules. Condition and friability, not merely asbestos content, drive the classification. Non-friable material in good condition may fall outside RACM categories.

Question 3Asbestos Abatement Worker

Before beginning abatement in a regulated area, what is the primary purpose of constructing critical barriers?

  1. To hold negative air machines in place
  2. To isolate the work area and prevent fiber migration to occupied spaces Correct answer.
  3. To provide a walking surface for workers
  4. To support the weight of the containment poly sheeting

Explanation

Critical barriers seal openings, HVAC vents, and other pathways so asbestos fibers cannot escape the regulated area. They are part of containment, not structural support. Negative air machines are positioned separately and do not depend on critical barriers for mounting.

Question 4Asbestos Abatement Worker

Which respiratory protection is minimally required for a worker inside a containment during removal of friable asbestos?

  1. No respirator if the containment is under negative pressure
  2. A NIOSH-approved respirator appropriate to the exposure level, at minimum a half-mask with HEPA filters Correct answer.
  3. A dust mask rated N95
  4. A half-mask air-purifying respirator with P100 filters

Explanation

Workers removing friable asbestos must wear a NIOSH-approved respirator with HEPA filtration at minimum, with higher protection selected as exposure assessments require. Negative pressure reduces but does not eliminate the need for respiratory protection. Ordinary dust masks are not approved for asbestos.

Question 5Asbestos Abatement Worker

What is the correct way to handle debris and bagged asbestos waste before it leaves the containment?

  1. Place it in sealed, labeled leak-tight containers and decontaminate the exterior before removal Correct answer.
  2. Store waste in the clean room until the project ends
  3. Load waste directly into an open truck bed
  4. Stack bagged waste outside the containment for later pickup

Explanation

Waste must be bagged or wrapped in leak-tight containers, labeled, and the exterior cleaned before it leaves the regulated area. Open or unlabeled handling can spread fibers and violate transport rules. Clean rooms are for worker decontamination, not waste storage.

Question 6Asbestos Abatement Worker

What is the function of the equipment room in a three-stage decontamination unit?

  1. It contains the negative air machine, filters, and electrical controls Correct answer.
  2. It houses the shower and clean clothing
  3. It is used to store bagged asbestos waste
  4. It is where workers first enter from the work area

Explanation

The equipment room houses negative air units, HEPA filtration, and electrical controls that support containment. The shower and clean changing area are separate stages. Waste is not stored in the equipment room.

Question 7Asbestos Abatement Worker

Which practice best prevents tracking asbestos fibers out of a containment on worker clothing and shoes?

  1. Shaking out disposable coveralls before leaving the dirty room
  2. Using the shower and changing into clean clothes before exiting through the clean room Correct answer.
  3. Wearing street shoes inside the work area and wiping them off
  4. Vacuuming clothing with an ordinary shop vacuum

Explanation

Workers must pass through the shower and change into clean clothing before exiting to prevent fiber transfer. Street shoes should not be worn inside containment. Shaking coveralls or using non-HEPA vacuums can re-suspend fibers.

Question 8Asbestos Abatement Worker

What does the term 'abatement' mean when applied to asbestos-containing material?

  1. Painting over the material to seal the surface
  2. Inspecting and sampling the material
  3. Removing or otherwise eliminating the material so it no longer poses an exposure risk Correct answer.
  4. Encapsulating the material in place without disturbing it

Explanation

Abatement refers to removing or otherwise eliminating asbestos-containing material so it no longer poses a hazard. Encapsulation and enclosure are separate control methods, not removal. Inspection and sampling are assessment activities, not abatement.

Question 9Asbestos Abatement Worker

A worker is assigned to remove asbestos pipe insulation in a basement. Which sequence correctly reflects containment first steps?

  1. Remove insulation, then set up poly and negative air
  2. Turn off lights, remove material, then install warning signs
  3. Seal the area, install critical barriers, establish negative pressure, then remove material Correct answer.
  4. Start removal while negative air machines are being delivered

Explanation

Containment must be established before any disturbance: seal the area, install critical barriers, and confirm negative pressure before removal begins. Removing material first releases fibers into uncontrolled space. Signs and equipment must be in place before work starts.

Question 10Asbestos Abatement Worker

Why must negative air machines in an asbestos containment be equipped with HEPA filters?

  1. To increase humidity inside the containment
  2. To cool the containment air
  3. To provide fresh air for workers
  4. To capture asbestos fibers before exhaust air leaves the regulated area Correct answer.

Explanation

HEPA filters trap asbestos fibers so exhausted air does not contaminate adjacent spaces. Negative air machines exhaust filtered air to maintain pressure differentials. They are not designed for cooling, humidification, or supplying fresh air.

Question 11Asbestos Abatement Worker

What does a worker do if a bag of asbestos waste tears during transfer to the waste drum?

  1. Leave the bag and report it at the end of the shift
  2. Continue loading and cover the tear with tape later
  3. Stop, place the torn bag inside a second intact bag, seal and label it, then clean the area Correct answer.
  4. Discard the bag in the nearest dumpster

Explanation

Torn bags must be overbagged, sealed, and labeled, and any spilled material cleaned using wet methods and HEPA vacuuming. Continuing or delaying response allows fiber release. Asbestos waste cannot go into an ordinary dumpster.

Question 12Asbestos Abatement Worker

Which wetting method is appropriate for suppressing dust during removal of friable asbestos?

  1. Dousing material with a high-pressure spray
  2. Dry sweeping after each removal step
  3. Applying a fine mist of amended water to keep material wet without generating runoff Correct answer.
  4. Using compressed air to blow dust toward the exhaust

Explanation

Amended water applied as a fine mist keeps material wet and suppresses fiber release without creating excessive runoff. High-pressure sprays can aerosolize fibers. Dry sweeping and compressed air are prohibited because they re-suspend fibers.

Question 13Asbestos Abatement Worker

What is the purpose of a personal air sample worn by an abatement worker?

  1. To measure the worker's exposure to airborne fibers during the shift Correct answer.
  2. To record the temperature and humidity inside the work area
  3. To test whether the respirator fits properly
  4. To verify that the containment is under negative pressure

Explanation

Personal air sampling measures the worker's breathing-zone fiber exposure to determine whether controls and respirator selection are adequate. Pressure monitoring uses manometers, and fit testing is a separate procedure. Temperature and humidity are not what personal samples measure.

Question 14Asbestos Abatement Worker

After removal is complete, what must happen before containment is removed?

  1. Negative air machines are turned off immediately
  2. Waste is left inside for the next shift
  3. The project supervisor signs off without inspection
  4. A visual inspection confirms no visible debris and clearance air sampling passes Correct answer.

Explanation

Clearance requires a thorough visual inspection and, where required, air sampling showing fiber levels below the clearance threshold. Containment must remain in place, with negative air running, until clearance is achieved. Supervisor sign-off alone is not sufficient.

Question 15Asbestos Abatement Worker

A worker notices a tear in the containment poly during removal. What is the correct response?

  1. Ignore it if negative pressure is still running
  2. Cover the tear with tape and continue without reporting
  3. Stop work, repair the tear, and verify containment before resuming Correct answer.
  4. Increase the removal pace to finish before the end of shift

Explanation

Any breach in containment must be repaired and the containment verified before work continues. Ignoring a tear or covering it without reporting can allow fibers to escape. Work pace should never override containment integrity.

Question 16Asbestos Abatement Worker

What does the term 'friable' describe about an asbestos-containing material?

  1. It can be crumbled, pulverized, or reduced to powder by hand pressure Correct answer.
  2. It is bonded in a solid matrix that resists damage
  3. It contains less than 1 percent asbestos
  4. It has been encapsulated with a sealant

Explanation

Friable means the material can be crumbled or reduced to powder by hand pressure, which makes fiber release more likely. Non-friable material is bound in a matrix. Encapsulation and asbestos content are separate attributes.

Question 17Asbestos Abatement Worker

Which action is required before a worker enters the dirty room after performing removal?

  1. Walk directly to the shower in street clothes
  2. Remove respirator and disposable coveralls in the work area
  3. Store the respirator in the clean room without cleaning
  4. Clean the exterior of the suit with HEPA vacuuming or wet wiping before doffing Correct answer.

Explanation

Workers must decontaminate the exterior of their protective clothing, typically by HEPA vacuuming or wet wiping, before doffing in the dirty room. The respirator stays on until the worker reaches a clean area. Street clothes should not be worn in the dirty room.

Question 18Asbestos Abatement Worker

What is the role of amended water in asbestos abatement?

  1. It wets material and lowers surface tension so fibers are less likely to become airborne Correct answer.
  2. It sterilizes the work area
  3. It dissolves asbestos fibers so they can be washed away
  4. It replaces the need for HEPA filtration

Explanation

Amended water, containing a wetting agent, lowers surface tension so the water penetrates material and suppresses fiber release. It does not dissolve asbestos. It is a dust-suppression control and does not replace HEPA filtration or other engineering controls.

Question 19Asbestos Abatement Worker

A supervisor asks a worker to begin removal before the containment has been tested for negative pressure. What is the appropriate response?

  1. Begin removal and check pressure during the shift
  2. Start removal in only one corner of the area
  3. Open a window to provide ventilation instead
  4. Decline until negative pressure is verified and containment is complete Correct answer.

Explanation

Removal must not begin until containment is complete and negative pressure is verified. Partial starts or opening windows compromise containment and can spread fibers. Workers should stop and report unsafe conditions rather than proceed.

Question 20Asbestos Abatement Worker

Which sign and access control is required at the entrance to a regulated asbestos work area?

  1. A sign listing the project budget
  2. Warning signs identifying the asbestos hazard and restricting entry to authorized, protected workers Correct answer.
  3. No signage if the area is locked
  4. A generic 'No Smoking' sign

Explanation

Regulated areas must be posted with warning signs that identify the asbestos hazard and limit entry to authorized workers using proper protection. Generic signs do not communicate the hazard. Locking an area does not substitute for required warning signage.

Question 21Asbestos Abatement Worker

During clearance, air sampling results come back above the required threshold. What is the correct next step?

  1. Cover the affected surfaces with poly and release the area
  2. Remove containment and release the area
  3. Increase negative air and release the area without resampling
  4. Reclean the area, re-establish containment if needed, and resample Correct answer.

Explanation

Failed clearance requires recleaning and resampling before the area can be released. Containment must remain in place until results pass. Releasing the area without passing clearance exposes occupants to fibers.

Question 22Asbestos Abatement Worker

A worker must choose between a half-mask and a full-facepiece respirator for a task with high fiber release and eye irritation. Which consideration best supports the choice?

  1. A full-facepiece offers higher assigned protection and eye protection, and selection should follow exposure assessment Correct answer.
  2. Respirator choice is based only on worker preference
  3. A half-mask always provides higher protection than a full-facepiece
  4. Eye protection is unnecessary inside containment

Explanation

Full-facepiece respirators generally carry higher assigned protection factors and protect the eyes, but selection must follow the exposure assessment and program requirements. Half-masks are not inherently more protective. Worker preference and eye protection are considerations but not the sole basis.

Question 23Asbestos Abatement Worker

A project involves non-friable asbestos floor tile that will be sanded during renovation. How should this be classified and handled?

  1. As non-friable material that can be handled as ordinary debris
  2. As material exempt from all asbestos rules because it is floor tile
  3. As material that only requires wetting with a garden hose
  4. As material likely to become friable through sanding, requiring regulated abatement controls Correct answer.

Explanation

Sanding or grinding non-friable material can render it friable, so it must be handled with regulated abatement controls. Floor tile is not categorically exempt. Ordinary debris handling or casual wetting does not control the fiber release from mechanical disturbance.

Question 24Asbestos Abatement Worker

A worker observes a coworker removing respirator inside the dirty room to talk. What is the best corrective action?

  1. Stop the coworker and explain that the respirator stays on until the clean area Correct answer.
  2. Ask the coworker to hold their breath while talking
  3. Report it only at the end of the project
  4. Say nothing because the dirty room is inside containment

Explanation

Respirators must remain on until the worker reaches the clean area, because the dirty room still has elevated fiber levels. Removing the respirator there increases exposure. Corrective action should be immediate, and holding one's breath is not a control measure.

Question 25Asbestos Abatement Worker

Which factor most directly determines whether a project is a 'regulated' asbestos abatement project requiring full worker certification and controls?

  1. The amount and condition of asbestos-containing material to be disturbed Correct answer.
  2. The day of the week the work begins
  3. The number of workers on site
  4. The color of the building's exterior

Explanation

Regulatory thresholds and material condition determine whether a project is regulated and what controls apply. Building appearance, crew size, and scheduling do not define regulatory status. The quantity and friability of material to be disturbed are central to that determination.

Question 26Asbestos Abatement Worker

A worker is preparing to remove a section of asbestos-containing gasket material from a boiler flange. Which removal method is appropriate for this material?

  1. Grind the gasket surface with a power tool to thin it before prying
  2. Wet the gasket and remove it intact with hand tools, then place it in a labeled waste bag Correct answer.
  3. Break the gasket loose with a chisel and hammer while dry to speed removal
  4. Burn the gasket residue off the flange with a torch before removal

Explanation

Gasket material is friable-prone and must be kept wet and removed intact with hand tools to minimize fiber release. Dry chiseling, grinding, and torch burning all generate or disperse fibers and are prohibited practices in abatement work.

Question 27Asbestos Abatement Worker

Which personal protective equipment item must a worker wear inside a regulated asbestos work area in addition to a respirator?

  1. A leather tool belt
  2. Disposable protective clothing such as coveralls Correct answer.
  3. A hard hat only
  4. Steel-toed boots with laces exposed

Explanation

Disposable protective clothing is required to prevent asbestos fibers from contaminating street clothes and being carried out of the work area. Hard hats, tool belts, and laced boots do not provide the barrier protection needed against fiber contamination.

Question 28Asbestos Abatement Worker

What does a worker do with the disposable coveralls worn inside the work area when leaving through the decontamination unit?

  1. Fold them and store them in a locker for reuse the next day
  2. Carry them home to launder separately
  3. Wash them in the shower with the worker
  4. Remove them in the equipment room and discard them as asbestos waste Correct answer.

Explanation

Contaminated coveralls are removed in the equipment room, the clean side of the decontamination sequence, and disposed of as asbestos waste. Reusing, showering in, or taking them home would spread fibers outside the controlled area.

Question 29Asbestos Abatement Worker

Which document must be available on site and describes the scope, methods, and safety procedures for an asbestos abatement project?

  1. The equipment rental agreement
  2. The building owner's insurance certificate
  3. The project abatement work plan Correct answer.
  4. The manufacturer's warranty for the negative air machines

Explanation

The abatement work plan documents the scope, removal methods, containment design, and safety procedures and must be available to workers on site. Warranty, insurance, and rental documents do not describe how the work is to be performed safely.

Question 30Asbestos Abatement Worker

A worker is removing asbestos-containing pipe insulation and the material begins to crumble. What does this indicate about the material?

  1. The material is no longer asbestos-containing
  2. The material is non-friable and can be handled dry
  3. The material is friable and requires wet methods and careful handling Correct answer.
  4. The material can be swept up with a broom

Explanation

Material that crumbles or can be reduced to powder by hand pressure is friable and releases fibers easily. It must be kept wet and handled carefully, and dry sweeping is never acceptable because it resuspends fibers.

Question 31Asbestos Abatement Worker

Which practice is required when a worker cuts a section of asbestos-containing pipe insulation with a hand saw?

  1. Use a power saw with a shop vacuum attachment
  2. Cut dry and quickly to reduce the time the material is disturbed
  3. Cut and let the debris fall to the floor for later cleanup
  4. Wet the material and use a hand tool, then immediately bag the debris Correct answer.

Explanation

Wetting the material and using hand tools keeps fibers bound and allows immediate bagging of debris. Power tools and dry cutting generate airborne fibers, and letting debris fall creates a contamination source.

Question 32Asbestos Abatement Worker

A worker is assigned to clean up debris after removal. Which method is acceptable for cleaning surfaces inside the containment?

  1. Wet wiping and HEPA vacuuming Correct answer.
  2. Dry sweeping with a push broom
  3. Dry dusting with a cloth
  4. Compressed air blow-down

Explanation

Wet wiping and HEPA vacuuming capture fibers without resuspending them and are the required cleaning methods. Dry sweeping, compressed air, and dry dusting all put fibers back into the air.

Question 33Asbestos Abatement Worker

A worker is donning a tight-fitting half-mask respirator before entering the work area. Which step confirms the respirator is properly fitted?

  1. Performing a user seal check each time the respirator is worn Correct answer.
  2. Wearing the respirator loosely to allow easier breathing
  3. Asking a coworker to visually inspect the mask from a distance
  4. Checking that the straps are tight enough to leave marks

Explanation

A user seal check must be performed each time a tight-fitting respirator is donned to confirm a proper seal. Over-tightening, visual inspection, or wearing it loosely does not verify the seal and can increase leakage or discomfort.

Question 34Asbestos Abatement Worker

A worker is required to wear a respirator during abatement work. Which program element must the employer provide?

  1. A respirator shared among workers on the same shift
  2. Optional training that the worker may decline
  3. A one-time fit test performed when the worker was first hired
  4. Medical evaluation, fit testing, and training as part of a written respiratory protection program Correct answer.

Explanation

Employers must maintain a written respiratory protection program that includes medical evaluation, fit testing, and training. A single fit test at hire, shared respirators, and optional training do not meet the requirement.

Question 35Asbestos Abatement Worker

During abatement, a worker notices that the negative air pressure monitor shows the containment has lost negative pressure. What is the first response?

  1. Stop work, notify the supervisor, and correct the cause before resuming Correct answer.
  2. Increase the number of workers inside to finish faster
  3. Continue working and report the reading at the end of the shift
  4. Open the containment to increase airflow

Explanation

Loss of negative pressure means fibers may escape the containment, so work must stop until the cause is corrected. Continuing work, opening the containment, or adding workers increases the risk of fiber release.

Question 36Asbestos Abatement Worker

A worker is preparing to remove asbestos-containing floor tile that will be broken up during removal. How should the material be handled?

  1. Break the tile dry and sweep the fragments into a pile
  2. Wet the tile, remove it intact where possible, and bag the debris Correct answer.
  3. Use a floor grinder to remove the tile and adhesive together
  4. Leave the broken tile in place and cover it with carpet

Explanation

Wetting and removing tile intact minimizes fiber release, and broken pieces must be bagged as asbestos waste. Dry breaking, grinding, and covering the material do not safely control the hazard.

Question 37Asbestos Abatement Worker

A worker is bagging asbestos waste inside the containment. Which requirement applies to the waste bags?

  1. Any plastic bag available on site may be used
  2. Bags must be labeled as asbestos waste and sealed before leaving the containment Correct answer.
  3. Bags must be filled to the top and compressed to save space
  4. Bags may be left open until the end of the project

Explanation

Asbestos waste must be placed in labeled, sealed containers before it leaves the containment. Unlabeled, open, or overfilled bags risk releasing fibers during handling and transport.

Question 38Asbestos Abatement Worker

A building owner plans to demolish a structure that contains asbestos-containing material. Which action is required before demolition begins?

  1. Proceed with demolition and remove the asbestos afterward
  2. Conduct a thorough inspection and remove the asbestos-containing material before demolition Correct answer.
  3. Assume the material is non-friable and leave it in place
  4. Wet the building exterior and demolish without inspection

Explanation

A thorough inspection must identify asbestos-containing material, and regulated material must be removed before demolition disturbs it. Demolishing first, skipping inspection, or assuming non-friability spreads fibers into the environment.

Question 39Asbestos Abatement Worker

A worker is reviewing air sampling results after abatement. Which result indicates that the containment has achieved clearance?

  1. Fiber levels below the clearance threshold specified for the project Correct answer.
  2. Any result lower than the outdoor ambient level
  3. A visual inspection alone without air sampling
  4. A result showing fibers were detected but at low levels

Explanation

Clearance requires air sampling results below the project's specified threshold, often combined with a visual inspection. Comparing to outdoor levels, accepting any detected fibers, or relying on visual inspection alone does not satisfy clearance requirements.

Question 40Asbestos Abatement Worker

A worker is assigned to a project where the asbestos-containing material will be removed using aggressive methods that generate high fiber levels. Which classification best describes this project?

  1. A routine repair that can be done without a work plan
  2. A non-regulated task because the material is intact
  3. A minor maintenance task with no special controls
  4. A regulated asbestos abatement project requiring full worker protection and containment Correct answer.

Explanation

Projects involving aggressive removal of asbestos-containing material are regulated abatement projects requiring containment, worker protection, and a work plan. Treating them as minor maintenance or routine repair would bypass required controls.

Question 41Asbestos Abatement Contractor/Supervisor

Under the NESHAP asbestos regulations, how long must a contractor retain copies of notification and waste shipment records after the abatement project is complete?

  1. One year
  2. Two years Correct answer.
  3. Three years
  4. Five years

Explanation

The NESHAP asbestos program requires owners and operators to keep copies of notifications, waste shipment records, and related documentation for at least two years after the project is finished. This retention window allows the regulatory agency to audit compliance after the work has ended.

Question 42Asbestos Abatement Contractor/Supervisor

A contractor plans to remove 260 linear feet of pipe insulation that is friable asbestos-containing material. Which regulatory trigger makes this project subject to NESHAP notification?

  1. The removal will occur indoors
  2. The linear footage exceeds 260 feet
  3. The material is friable and the amount exceeds the threshold Correct answer.
  4. The material is on a commercial building

Explanation

NESHAP notification applies to regulated asbestos-containing material removals that meet or exceed the threshold amounts, such as 260 linear feet on pipes, 160 square feet on other components, or 35 cubic feet. The friability of the material and the quantity removed are the operative factors, not the building type or indoor location.

Question 43Asbestos Abatement Contractor/Supervisor

What is the primary purpose of a negative pressure enclosure during an asbestos abatement project?

  1. To prevent airborne fibers from migrating outside the containment Correct answer.
  2. To speed up the removal of ACM
  3. To keep workers cool in the work area
  4. To reduce the amount of water needed

Explanation

A negative pressure enclosure maintains a pressure differential so that air flows into the work area rather than out, which keeps released fibers from escaping into occupied spaces. The enclosure works together with HEPA filtration and decontamination units to protect building occupants and the environment.

Question 44Asbestos Abatement Contractor/Supervisor

Before beginning abatement in an occupied building, what must a supervisor verify about the HVAC system serving the work area?

  1. Its thermostat has been set to the lowest temperature
  2. It has been shut down and isolated to prevent fiber spread Correct answer.
  3. Its filters have been replaced with new ones
  4. It is running at full capacity

Explanation

HVAC systems serving the work area must be shut down and isolated, with openings sealed, so that asbestos fibers cannot be drawn into ducts and distributed to other parts of the building. Running or unsealed systems would defeat the containment strategy.

Question 45Asbestos Abatement Contractor/Supervisor

Which respiratory protection is required for workers performing abatement inside a regulated work area where fiber levels are not yet known?

  1. No respirator if the work is brief
  2. A single-use surgical mask
  3. A half-mask air-purifying respirator with dust filters
  4. At minimum a half-mask respirator equipped with HEPA filters Correct answer.

Explanation

Workers in regulated asbestos work areas must wear at least a half-mask air-purifying respirator fitted with HEPA filters, and higher protection is required for certain tasks and exposures. Surgical masks and non-HEPA filters do not provide adequate protection against asbestos fibers.

Question 46Asbestos Abatement Contractor/Supervisor

A supervisor observes a worker leaving the work area without passing through the decontamination unit. What is the correct immediate action?

  1. Note it in the log and address it at the end of the shift
  2. Stop the worker and direct them back through the decontamination sequence Correct answer.
  3. Allow it if the worker's coveralls look clean
  4. Ask the worker to shake off dust before entering occupied space

Explanation

All personnel must exit through the decontamination unit so that contaminated clothing and dust are removed before entering clean areas. Allowing a worker to bypass decontamination can spread fibers into occupied spaces and violates containment procedures.

Question 47Asbestos Abatement Contractor/Supervisor

What is the correct method for handling asbestos-containing waste generated during abatement?

  1. Bag it in labeled, sealed containers and dispose of it at an approved landfill Correct answer.
  2. Place it in open bins for later sorting
  3. Burn it in an incinerator on site
  4. Store it uncovered until the end of the project

Explanation

Asbestos waste must be wetted, placed in leak-tight, labeled containers, sealed, and transported to an approved disposal site that accepts asbestos-containing waste. Open or unlabeled storage would release fibers and violate waste-handling requirements.

Question 48Asbestos Abatement Contractor/Supervisor

During abatement, a supervisor must ensure that air monitoring is conducted to verify containment. Which sampling approach best confirms that fibers are not escaping the enclosure?

  1. Grab sampling of the work area floor
  2. Area sampling outside the containment boundary Correct answer.
  3. Bulk sampling of removed material
  4. Personal breathing zone sampling only

Explanation

Area air samples collected outside the containment boundary, often near the exhaust and perimeter, document whether fibers are escaping into occupied or clean areas. Personal samples assess worker exposure but do not verify containment integrity.

Question 49Asbestos Abatement Contractor/Supervisor

What is the purpose of a HEPA filter in an abatement containment exhaust system?

  1. To cool the exhaust air
  2. To remove odors from the work area
  3. To capture airborne asbestos fibers before air is discharged Correct answer.
  4. To increase airflow into the enclosure

Explanation

HEPA filters capture particles, including asbestos fibers, at high efficiency so that air exhausted from the containment does not carry fibers into clean areas. They are essential to maintaining a safe negative pressure system.

Question 50Asbestos Abatement Contractor/Supervisor

A supervisor is reviewing a project where the ACM is non-friable and will be removed using hand tools that may break it. What classification best describes this work under asbestos regulations?

  1. Class IV work
  2. Class I work
  3. Class III work
  4. Class II work Correct answer.

Explanation

Removal of non-friable asbestos-containing material that may become friable during removal is Class II work. Class I covers thermal system insulation and surfacing materials, Class III covers repair and maintenance likely to disturb ACM, and Class IV covers cleanup of small amounts of debris.