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Question 1Asbestos Abatement (NH)
Under NH asbestos abatement rules, which individual is authorized to inspect and certify that a regulated asbestos abatement project has been properly cleaned before containment is removed?
- The project contractor's on-site supervisor
- An independent certified asbestos inspector Correct answer.
- The building owner's designated maintenance manager
- A certified asbestos abatement contractor holding a valid license
Explanation
New Hampshire requires that clearance and visual inspection confirming proper cleanup be performed by an independent certified asbestos inspector, not by the abatement contractor who did the removal work. This separation preserves the integrity of the clearance determination. Contractors and owners cannot self-certify completion.
Question 2Asbestos Abatement (NH)
What is the primary purpose of constructing a containment with critical barriers during an asbestos abatement project?
- To isolate the work area and prevent fiber release to occupied spaces Correct answer.
- To reduce noise from power tools
- To speed drying of wet-cleaned surfaces
- To provide structural support for scaffolding
Explanation
Critical barriers and containment enclose the regulated abatement area so asbestos fibers released during removal cannot migrate into occupied or uncontaminated spaces. They are a core engineering control for fiber release prevention. Drying, scaffolding, and noise control are unrelated objectives.
Question 3Asbestos Abatement (NH)
Which respiratory protection provides the highest assigned protection factor for abatement workers exposed to airborne asbestos fibers?
- A full-facepiece air-purifying respirator
- A Type C supplied-air respirator operated in pressure-demand mode Correct answer.
- A half-facepiece air-purifying respirator
- A powered air-purifying respirator with a loose-fitting hood
Explanation
Supplied-air respirators operated in pressure-demand mode carry the highest assigned protection factors among the listed options and are used where exposures exceed the limits for air-purifying units. Air-purifying respirators, including PAPRs, offer lower protection factors. Selection must match measured exposure levels.
Question 4Asbestos Abatement (NH)
A worker must perform a small repair on intact asbestos-containing pipe insulation. Which work practice is required under NH regulations for this type of minor activity?
- Wet methods, HEPA vacuuming, and proper waste handling with appropriate worker protection Correct answer.
- Full containment with negative air machines and decontamination unit
- Open-air removal with a household vacuum for cleanup
- Dry removal followed by sweeping with a broom
Explanation
Minor repair of intact material still requires wet methods, HEPA vacuuming, careful waste packaging, and appropriate personal protection to minimize fiber release. Full containment is generally reserved for larger regulated projects. Dry methods and household vacuums are prohibited because they disperse fibers.
Question 5Asbestos Abatement (NH)
How should asbestos-containing waste be packaged before transport from a work area?
- In open burlap sacks for ventilation
- In sealed, leak-tight containers labeled as asbestos waste Correct answer.
- Loose in a covered truck bed
- In unlabeled cardboard boxes
Explanation
Asbestos waste must be placed in sealed, leak-tight containers and labeled to identify it as asbestos-containing waste before transport. Open or unlabeled packaging risks fiber release and violates labeling requirements. Loose transport is never acceptable.
Question 6Asbestos Abatement (NH)
What does the term 'regulated asbestos-containing material' (RACM) signify in abatement planning?
- Material that is friable or will become friable and is subject to specific work practice standards Correct answer.
- Material found only in residential buildings
- Any material that merely contains asbestos
- Material that is non-friable and permanently bonded in place
Explanation
RACM designates asbestos-containing material that is friable or likely to become friable, triggering specific work practice, notification, and handling standards. Not every asbestos-containing material qualifies as RACM. Non-friable bonded material may fall outside certain requirements until disturbed.
Question 7Asbestos Abatement (NH)
Before beginning a regulated asbestos abatement project in NH, the contractor must generally provide written notification to the state at what point?
- Within 24 hours after work begins
- Only after the project is completed
- At least 10 working days before work begins Correct answer.
- Notification is not required for regulated projects
Explanation
Regulated abatement projects require advance written notification to the state agency, generally at least 10 working days before work starts, so that oversight can be scheduled. Post-hoc or same-day notification defeats the purpose of pre-project review. Completion reporting is separate.
Question 8Asbestos Abatement (NH)
Which engineering control is typically used to maintain negative pressure within a containment during abatement?
- Dehumidifiers without filtration
- Portable heaters
- Negative air machines equipped with HEPA filters Correct answer.
- Box fans exhausting to occupied corridors
Explanation
HEPA-filtered negative air machines maintain a pressure differential that keeps air flowing into the containment and filters exhausted air. Unfiltered fans or equipment would discharge fibers into occupied spaces. Negative pressure is a defining engineering control for abatement.
Question 9Asbestos Abatement (NH)
Personal air monitoring during an abatement project is used primarily to do what?
- Verify that worker exposures are within permissible limits and that controls are effective Correct answer.
- Confirm the project schedule
- Measure the building's structural load
- Determine the color of the waste bags
Explanation
Personal air sampling measures each worker's exposure to airborne fibers so the employer can confirm controls are working and exposures remain below permissible limits. It does not address structural or scheduling concerns. Results also inform respirator selection.
Question 10Asbestos Abatement (NH)
What is the correct method for final cleaning of surfaces inside a containment before clearance?
- Leaving dust in place for the inspector to assess
- Wet wiping and HEPA vacuuming of all surfaces Correct answer.
- Rinsing with a garden hose and open drain
- Dry sweeping and compressed-air blowdown
Explanation
Final cleaning requires wet wiping and HEPA vacuuming of all surfaces to remove settled fibers before clearance inspection. Dry sweeping and compressed air are prohibited because they re-suspend fibers. Surfaces must be visibly clean for clearance.
Question 11Asbestos Abatement (NH)
Which practice is required when removing asbestos-containing floor tile using the non-friable method?
- Wet methods and careful handling to keep material intact, with proper disposal Correct answer.
- Dry chipping with a hammer to speed removal
- Grinding the tile into small pieces for easier bagging
- Burning the tile on site
Explanation
Non-friable floor tile should be removed using wet methods and careful handling that keeps pieces intact, reducing fiber release, followed by proper packaging and disposal. Chipping, grinding, or burning would render the material friable or create hazardous emissions.
Question 12Asbestos Abatement (NH)
A decontamination unit at an abatement site typically includes which sequence of rooms?
- Shower, clean room, and storage closet
- Clean room, shower, and equipment/waste room arranged so workers pass from dirty to clean Correct answer.
- Waste room, lunchroom, and clean room
- Equipment room, break room, and office
Explanation
A decontamination unit is arranged so workers move from the dirty work area through a shower into a clean room, with an equipment or waste room for contaminated gear. This sequence prevents fibers from being carried out. The order of rooms is deliberate and directional.
Question 13Asbestos Abatement (NH)
What is the purpose of a glove bag in asbestos abatement?
- To collect soil samples
- To enclose a small removal area on a pipe so the work is done without releasing fibers Correct answer.
- To hold drinking water for workers
- To store clean respirator cartridges
Explanation
A glove bag is a sealed enclosure with built-in sleeves that lets a worker remove small sections of pipe insulation while containing debris and fibers. It is a localized containment tool for small jobs. It is not used for storage, sampling, or hydration.
Question 14Asbestos Abatement (NH)
Which action best protects building occupants during an abatement project in an occupied building?
- Leaving doors to the work area open for ventilation
- Sealing HVAC openings and isolating the work area with critical barriers Correct answer.
- Removing barriers at night to allow air exchange
- Running the building's HVAC system at full capacity toward the work area
Explanation
Sealing HVAC openings and installing critical barriers isolates the work area so fibers cannot enter the building's air distribution system. Running HVAC toward the work area or leaving doors open would spread contamination. Barriers must remain in place throughout the project.
Question 15Asbestos Abatement (NH)
When is a medical surveillance program required for asbestos abatement workers?
- When workers are exposed above the permissible exposure limit or for the specified duration, with pre-placement and periodic examinations Correct answer.
- Only after a worker reports symptoms
- Only for supervisory personnel
- Never, because respirators prevent all exposure
Explanation
Medical surveillance is required for workers whose exposures reach or exceed the permissible exposure limit or who meet the specified duration of exposure, and it includes pre-placement and periodic exams. It is not triggered only by reported symptoms. Respirators reduce but do not eliminate exposure.
Question 16Asbestos Abatement (NH)
What does a clearance air sample result below the established limit indicate?
- Additional abatement is always required regardless of results
- The containment may be dismantled and the area returned to normal use Correct answer.
- The project must be abandoned
- The inspector must re-clean for a full week
Explanation
A clearance air sample below the established limit, combined with a satisfactory visual inspection, allows the containment to be removed and the area returned to use. Clearance is the final gate before reoccupancy. Failing results, not passing ones, trigger re-cleaning.
Question 17Asbestos Abatement (NH)
Which document must be maintained to track the handling and disposal of asbestos waste from a project?
- A waste shipment record or manifest documenting quantities and destination Correct answer.
- A fire inspection report
- A payroll ledger
- A building occupancy permit
Explanation
Waste shipment records or manifests document the quantity, handling, and destination of asbestos waste, providing a chain of custody for disposal. Payroll, occupancy, and fire records do not track waste. These records support regulatory compliance and accountability.
Question 18Asbestos Abatement (NH)
A contractor discovers unexpected asbestos-containing material during a project. What is the appropriate response?
- Remove it without any containment or protection
- Cover the material with paint and resume immediately
- Continue work and ignore the discovery
- Stop work in the affected area, protect it, and notify the owner and state as required Correct answer.
Explanation
Unexpected discoveries require stopping work in the affected area, protecting the material from disturbance, and notifying the owner and the state as required so the scope can be reassessed. Continuing or covering up the material risks uncontrolled fiber release. Unprotected removal is prohibited.
Question 19Asbestos Abatement (NH)
Why must abatement workers avoid dry sweeping and compressed-air cleaning inside a containment?
- They require special permits
- They aerosolize settled fibers and increase airborne concentrations Correct answer.
- They damage the plastic sheeting
- They are slower than wet methods
Explanation
Dry sweeping and compressed air re-suspend settled asbestos fibers, raising airborne concentrations and worker exposure. Wet methods and HEPA vacuuming keep fibers bound or captured. Speed, sheeting damage, and permits are not the governing concern.
Question 20Asbestos Abatement (NH)
What is the role of a project designer in an asbestos abatement project?
- To prepare the abatement plan specifying work practices, containment, and clearance criteria Correct answer.
- To certify the final clearance air samples
- To perform the physical removal work
- To transport waste to the landfill
Explanation
The project designer develops the written abatement plan that specifies work practices, containment design, and clearance criteria before work begins. Removal, clearance certification, and waste transport are separate roles. Separating design from execution supports accountability.
Question 21Asbestos Abatement (NH)
Which condition would most likely require upgrading from a simple containment to a full negative-pressure enclosure?
- Removal of a small intact pipe fitting with a glove bag
- Installation of carpet over intact floor tile
- Large-scale removal of friable sprayed-on insulation in an occupied building Correct answer.
- Painting of non-friable exterior siding
Explanation
Large-scale removal of friable material in an occupied building generates substantial fiber release potential, warranting a full negative-pressure enclosure with decontamination. Small glove-bag jobs and non-disturbance activities do not require that level of control. The scale and friability drive the decision.
Question 22Asbestos Abatement (NH)
What is the correct way to handle a HEPA vacuum's filter when servicing it after an abatement project?
- Reuse it without any precautions
- Handle it as contaminated material, bag it, and dispose of it properly Correct answer.
- Wash it in a utility sink
- Remove it outdoors and shake it clean
Explanation
A HEPA vacuum filter that has collected asbestos is itself contaminated and must be handled as asbestos waste, bagged, and disposed of properly. Shaking, washing in a sink, or careless reuse would release fibers. Servicing should occur under controlled conditions.
Question 23Asbestos Abatement (NH)
Which statement accurately describes the difference between friable and non-friable asbestos-containing material?
- Non-friable material never contains asbestos
- Friable material can be crumbled by hand pressure, while non-friable material cannot Correct answer.
- Friable material is only found outdoors
- Friable material is always non-hazardous
Explanation
Friability refers to whether material can be crumbled, pulverized, or reduced to powder by hand pressure; friable material releases fibers more readily. Non-friable material is bonded or matrix-bound but can become friable if disturbed. Location does not determine friability.
Question 24Asbestos Abatement (NH)
What must an abatement contractor verify about workers before they perform regulated abatement work?
- That workers have current training certification and, where required, medical clearance and respirator fit-testing Correct answer.
- That workers own their own tools
- That workers live in New Hampshire
- That workers have at least ten years of construction experience
Explanation
Workers must hold current abatement training certification and, where applicable, medical clearance and a valid respirator fit test before performing regulated work. Tool ownership, tenure, and residency are not regulatory prerequisites. These verifications protect both workers and the public.
Question 25Asbestos Abatement (NH)
During abatement, a worker notices the containment's plastic sheeting has torn. What is the best immediate action?
- Stop work in that area, secure or repair the breach, and clean up any debris before resuming Correct answer.
- Ignore it because negative pressure will contain fibers
- Open the tear wider to improve airflow
- Continue working and repair the tear at the end of the shift
Explanation
A breach in containment compromises fiber control, so work should stop, the breach should be secured or repaired, and any released debris cleaned before resuming. Deferring repair or enlarging the tear allows fibers to escape. Negative pressure alone does not justify ignoring a breach.
Question 26Asbestos Abatement (NH)
Under NH asbestos abatement rules, which material category is defined by its ability to be crumbled, pulverized, or reduced to powder by hand pressure when dry?
- Non-friable asbestos-containing material
- Regulated asbestos-containing material
- Friable asbestos-containing material Correct answer.
- Category I non-friable material
Explanation
Friability describes how easily a material can be reduced to powder by hand pressure when dry, which is the property that makes fiber release likely during disturbance. Non-friable materials resist this breakdown, while RACM is a regulatory classification that can include both friable material and certain non-friable material that will be disturbed.
Question 27Asbestos Abatement (NH)
A worker must enter a regulated abatement work area through a decontamination unit. Which room should the worker enter first when coming from the work area?
- The clean room
- The shower room Correct answer.
- The equipment room
- The waste staging room
Explanation
The decontamination sequence moves from dirty to clean, so a worker leaving the work area passes through the shower before reaching the clean room. Showering while still on the dirty side removes contamination before clean clothing and the clean room are reached.
Question 28Asbestos Abatement (NH)
Which federal regulation establishes the work practice standards and emission controls that govern asbestos abatement and demolition activities in New Hampshire?
- The Resource Conservation and Recovery Act subtitle C
- The Safe Drinking Water Act
- The Clean Air Act NESHAP regulation for asbestos Correct answer.
- The Toxic Substances Control Act title I
Explanation
The asbestos NESHAP, found at 40 CFR Part 61 Subpart M, sets work practice standards for demolition, renovation, and waste handling that apply nationwide, including in New Hampshire. RCRA governs waste disposal generally, but the abatement work practices themselves come from the NESHAP.
Question 29Asbestos Abatement (NH)
During abatement, a worker must lower a large section of removed plastic sheeting into a disposal bag without shaking it. Which handling technique best limits fiber release?
- Spraying the material with a solvent to dissolve the residue
- Rolling or folding the material inward so contaminated surfaces stay enclosed Correct answer.
- Dropping the material from waist height to let dust fall out
- Cutting the material into small pieces with powered shears
Explanation
Wrapping contaminated surfaces inward keeps the dirty side enclosed and prevents fibers from becoming airborne during handling. Wet methods and careful folding, rather than shaking or cutting, are the standard way to keep fiber release low.
Question 30Asbestos Abatement (NH)
What does the term 'competent person' mean in the context of an asbestos abatement project?
- A licensed physician who performs worker medical examinations
- A person capable of identifying existing and predictable hazards and authorized to take corrective action Correct answer.
- A laboratory analyst certified to count fibers by phase contrast microscopy
- A municipal building inspector who issues demolition permits
Explanation
A competent person is defined by the ability to recognize existing and predictable hazards and by the authority to take prompt corrective measures. This role is central to site safety supervision and is distinct from medical, laboratory, or permitting roles.
Question 31Asbestos Abatement (NH)
Which practice is required when packaging asbestos-containing waste for transport off site?
- Compacting the waste with a standard trash compactor
- Storing the waste in open piles until a full truckload accumulates
- Mixing the waste with general construction debris
- Placing the waste in leak-tight, properly labeled containers Correct answer.
Explanation
Asbestos waste must be containerized in leak-tight, labeled packaging so fibers are not released during storage and transport. Labeling and sealing are required so that handlers and disposal facilities can identify the material.
Question 32Asbestos Abatement (NH)
What is the primary purpose of a HEPA filter in an abatement containment?
- To reduce noise from the ventilation equipment
- To add moisture to the air to suppress dust
- To monitor the fiber concentration in the work area
- To capture airborne fibers and particles before air is exhausted Correct answer.
Explanation
A high-efficiency particulate air filter traps very fine particles, including asbestos fibers, so air leaving a containment does not carry contamination outward. It is a particle-capture device, not a monitoring or humidification device.
Question 33Asbestos Abatement (NH)
A worker is assigned to remove asbestos-containing gaskets from a boiler using a glove bag. What must be done with the bag after the removal is complete?
- The bag is emptied into a general trash bin
- The bag is rinsed and reused for the next gasket
- The bag is left open on the floor for later cleanup
- The bag is collapsed, sealed, and disposed of as asbestos waste Correct answer.
Explanation
A glove bag is a disposable enclosure, so after the removal it is collapsed with the waste inside, sealed, and disposed of as asbestos waste. Reusing or leaving it open defeats the purpose of isolating the operation.
Question 34Asbestos Abatement (NH)
A contractor plans a renovation that will disturb more than the threshold amount of regulated asbestos-containing material. Which obligation applies under the asbestos NESHAP?
- Notify the agency only after the waste has been hauled away
- Provide written notification to the appropriate agency before the work begins Correct answer.
- Notify the agency only if a complaint is filed
- Notify the agency only when the building is a school
Explanation
The NESHAP requires advance written notification of regulated demolition and renovation activity so the agency can inspect and verify compliance. Notification is submitted before work starts, not afterward and not only for schools.
Question 35Asbestos Abatement (NH)
A building owner wants to demolish a structure that contains asbestos-containing material. Which statement best describes the NESHAP requirement?
- The material may remain in place because demolition destroys it anyway
- The material must be removed only if the building is occupied
- The material must be removed before demolition if it is regulated and will be disturbed Correct answer.
- The material may remain if the building is fenced off
Explanation
Regulated asbestos-containing material must be removed before demolition when it will be disturbed, so that fibers are not released by the wrecking process. Leaving it in place during demolition is not an acceptable practice for regulated material.
Question 36Asbestos Abatement (NH)
During a project, a bulk sample of suspect material is collected for laboratory analysis. Which practice best supports a reliable result?
- Collecting the sample with a dry, dusty tear
- Collecting the sample with wet methods and sealing it in a labeled container Correct answer.
- Collecting the sample and storing it in an unlabeled bag
- Collecting a single sample from the outer surface only
Explanation
Wet sampling reduces fiber release and a sealed, labeled container preserves sample integrity and chain of custody. Representative sampling from the material, not just the surface, is also needed for a meaningful result.
Question 37Asbestos Abatement (NH)
A worker's personal air sample during abatement shows a fiber concentration above the permissible exposure limit. What is the most appropriate first response?
- Wait until the end of the project to review the data
- Reduce the sampling frequency to save cost
- Investigate and correct the exposure source and re-evaluate controls Correct answer.
- Ignore the result because personal samples are only informational
Explanation
An overexposure result signals that controls are not adequate, so the source should be identified and corrected, followed by further monitoring to confirm improvement. Exposure limits are enforceable, and results are not merely informational.
Question 38Asbestos Abatement (NH)
Which factor most directly determines whether a negative-pressure enclosure is needed for a given abatement job?
- The number of workers on the crew
- The potential for fiber release and the sensitivity of adjacent occupied spaces Correct answer.
- The day of the week the work begins
- The color of the plastic sheeting used
Explanation
The need for a full negative-pressure enclosure depends on how much fiber release the work will cause and whether occupied or sensitive spaces are nearby. Crew size and cosmetic details do not drive that engineering decision.
Question 39Asbestos Abatement (NH)
A worker must remove a small amount of asbestos-containing material from a pipe in a tight space where a full enclosure is impractical. Which control is most appropriate?
- Compressed-air blowdown of the pipe surface
- A glove bag with wet methods and HEPA vacuuming Correct answer.
- Dry chipping with a hammer and chisel
- Open-flame cutting of the pipe
Explanation
A glove bag isolates the small operation, and wet methods plus HEPA vacuuming keep fibers contained. Dry chipping, flame cutting, and compressed air all disperse fibers and are not acceptable controls.
Question 40Asbestos Abatement (NH)
Before abatement begins in a building, which action best protects occupants who remain in other parts of the building?
- Posting a sign at the main entrance only
- Turning off the building's HVAC system entirely
- Opening windows to increase ventilation
- Sealing openings and maintaining the work area under negative pressure Correct answer.
Explanation
Sealing openings and keeping the work area under negative pressure prevents fibers from migrating into occupied spaces. Signs alone do not contain fibers, and uncontrolled ventilation can spread contamination.
Question 41Asbestos Abatement (NH)
What is the purpose of a chain-of-custody form for asbestos samples?
- To document who handled each sample and when, preserving its integrity Correct answer.
- To certify that the laboratory is accredited
- To record the contractor's insurance coverage
- To list the names of building occupants
Explanation
A chain-of-custody form tracks sample handling from collection through analysis so the result can be tied reliably to the sampled material. Accreditation and insurance are separate matters documented elsewhere.
Question 42Asbestos Abatement (NH)
A contractor is preparing a respiratory protection program for abatement workers. Which element is essential to that program?
- Selection of respirators based only on worker preference
- A single respirator size shared by the whole crew
- Fit testing and medical evaluation for each respirator user Correct answer.
- Voluntary use without any training
Explanation
A respirator program requires fit testing, medical evaluation, and training so that each user is protected by a properly fitting and appropriate respirator. Sharing one size or relying on preference does not meet these requirements.
Question 43Asbestos Abatement (NH)
During final cleaning, a worker wants to verify that surfaces are clean before requesting clearance. Which approach is most consistent with acceptable practice?
- Spraying surfaces with compressed air
- Dry sweeping the surfaces until they look clean
- Washing surfaces into the general drain system
- Wet wiping and HEPA vacuuming, then visual inspection Correct answer.
Explanation
Final cleaning relies on wet wiping and HEPA vacuuming followed by a careful visual inspection before clearance sampling. Dry methods and compressed air redistribute fibers, and wash water must not be discharged improperly.
Question 44Asbestos Abatement (NH)
A worker who has been medically cleared for respirator use reports shortness of breath during abatement. What is the appropriate action?
- Stop work, report the symptom, and obtain medical evaluation Correct answer.
- Continue working and mention it at the next annual exam
- Ignore the symptom because it is common in the trade
- Switch to a dust mask and keep working
Explanation
New or worsening respiratory symptoms require prompt reporting and medical evaluation, and work should stop until the worker is cleared. Substituting a dust mask or delaying evaluation leaves a potentially serious condition unaddressed.
Question 45Asbestos Abatement (NH)
Which statement best explains why wet methods are used during abatement?
- Moisture dissolves asbestos fibers into harmless compounds
- Moisture eliminates the need for respiratory protection
- Moisture makes the material easier to burn
- Moisture suppresses dust and keeps fibers from becoming airborne Correct answer.
Explanation
Wetting the material suppresses dust generation, reducing airborne fiber concentrations during removal and handling. Water does not destroy asbestos fibers and does not replace other controls such as respirators.
Question 46Asbestos Abatement (NH)
A contractor must store asbestos waste on site before transport. Which practice is most appropriate?
- Storing containers in a busy hallway for convenience
- Leaving containers open so moisture can escape
- Stacking unsealed bags near the building entrance
- Keeping sealed, labeled containers in a designated area away from occupied spaces Correct answer.
Explanation
Waste should remain sealed and labeled and be kept in a controlled area away from occupants until transport. Open or unsealed storage allows fiber release and creates unnecessary exposure risk.
Question 47Asbestos Abatement (NH)
An inspector is evaluating whether a material is regulated asbestos-containing material. Which combination of factors is most relevant?
- Building age and occupancy type
- Color, weight, and manufacturer
- Purchase price and warranty status
- Asbestos content, friability, and the amount and manner of disturbance Correct answer.
Explanation
The RACM determination depends on asbestos content, friability, and how much material will be disturbed and how. Cosmetic or commercial attributes do not determine regulatory status.
Question 48Asbestos Abatement (NH)
A project designer is specifying abatement for a large, friable ceiling material in an occupied building. Which design choice best addresses both fiber control and building operation?
- A simple drop cloth under the work area with no barriers
- Removal during peak occupancy hours to save time
- Dry removal with portable fans for ventilation
- A full negative-pressure enclosure with HEPA exhaust and a decontamination unit Correct answer.
Explanation
Large friable material in an occupied building calls for a full negative-pressure enclosure, HEPA-filtered exhaust, and a decontamination unit to isolate the work and protect occupants. Drop cloths, peak-hour work, and fans increase exposure risk.
Question 49Asbestos Abatement (NH)
A clearance air sample result comes back above the established limit. What is the most appropriate next step?
- Accept the result if the area looks clean
- Reclean the work area and repeat clearance sampling Correct answer.
- Reduce the sampling time on the next attempt
- Release the area and note the result in the log
Explanation
A result above the clearance limit means the containment is not ready for reoccupancy, so the area must be recleaned and resampled. Visual appearance alone does not establish clearance, and altering sampling to obtain a passing result is improper.
Question 50Asbestos Abatement (NH)
A contractor is evaluating whether a non-friable material can be removed using the non-friable method rather than full containment. Which consideration is most important?
- Whether the crew prefers the faster method
- Whether the material is a light or dark color
- Whether the removal method will keep the material from becoming crumbled or pulverized Correct answer.
- Whether the building has a basement
Explanation
The non-friable method is only acceptable if the removal technique keeps the material intact and prevents it from being crumbled or pulverized. If the method would break the material down, the material must be treated as friable and handled accordingly.