NORTH CAROLINA ASBESTOS SUPERVISOR CERTIFICATION –QUESTIONS AND
CORRECT ANSWERS (VERIFIED ANSWERS) PLUS RATIONALES 2026 Q&A |
INSTANT DOWNLOAD PDF.
*Core Domains*
*- Regulatory Compliance and State Laws (EPA, OSHA, NC DHHS)*
*- Health Effects and Medical Surveillance*
*- Personal Protective Equipment and Respirator Programs*
*- State-of-the-Art Work Practices and Engineering Controls*
*- Containment Design and Negative Pressure Ventilation*
*- Decontamination Procedures and Waste Disposal*
*- Air Monitoring, Sampling, and Analysis*
*- Supervisor Responsibilities and Contract Specifications*
*Introduction*
*The purpose of this comprehensive assessment is to evaluate the competency, speciali
Section One: Questions 1–100
Question 1
,Which North Carolina state agency is primarily responsible for enforcing the asbestos
accreditation and permitting regulations under the Health Hazards Control Unit (HHCU)?
A. Department of Environmental Quality (DEQ)
B. Department of Labor (DOL)
C. Department of Health and Human Services (DHHS)
D. Wildlife Resources Commission
Correct answer: 🟢 C. Department of Health and Human Services (DHHS)
Explanation: 🔴 RATIONALE: In North Carolina, the Health Hazards Control Unit
(HHCU) is housed within the Division of Public Health under the Department of Health
and Human Services (DHHS). This unit oversees asbestos accreditations, certifications,
and abatement project permits across the state.
Question 2
An asbestos supervisor is preparing a negative pressure enclosure for an abatement
project in North Carolina. What is the minimum acceptable pressure drop across the
containment barrier as required by OSHA and state standards?
A. -0.01 inches of water column
B. -0.02 inches of water column
C. -0.05 inches of water column
D. -0.10 inches of water column
,Correct answer: 🟢 B. -0.02 inches of water column
Explanation: 🔴 RATIONALE: Both OSHA regulations (29 CFR 1926.1101) and industry
standards state that a negative pressure enclosure must maintain a minimum pressure
differential of -0.02 inches of water column relative to the outside air to prevent the
migration of airborne fibers.
Question 3
During a Class I asbestos abatement operation, an employee's respirator must be
selected based on the airborne concentration of asbestos fibers. If the expected
exposure concentration is 0.5 fibers per cubic centimeter (f/cc), what is the minimum
assigned protection factor (APF) required for the respirator?
A. 5
B. 10
C. 50
D. 1000
Correct answer: 🟢 B. 10
Explanation: 🔴 RATIONALE: The OSHA Permissible Exposure Limit (PEL) is 0.1 f/cc.
An exposure of 0.5 f/cc is 5 times the PEL. A half-mask air-purifying respirator has an
APF of 10, which safely covers exposures up to 10 times the PEL (1.0 f/cc), making it the
minimum requirement.
, Question 4
Under the EPA Asbestos Hazard Emergency Response Act (AHERA) regulations, visual
inspections of a school building for asbestos-containing materials (ACM) must be
conducted by an accredited inspector at least once every:
A. Six months
B. Year
C. Three years
D. Five years
Correct answer: 🟢 C. Three years
Explanation: 🔴 RATIONALE: AHERA requires that local education agencies ensure an
accredited inspector performs a reinspection of all known or assumed ACBM in each
school building at least once every three years.
Question 5
A supervisor notes a significant tear in the poly wall of the dirty room within the
decontamination unit during active removal operations. What is the immediate correct
course of action?
A. Wait until the end of the shift to apply duct tape to avoid disrupting work flow.
B. Increase the flow rate of the negative air machines to compensate for the leak.
CORRECT ANSWERS (VERIFIED ANSWERS) PLUS RATIONALES 2026 Q&A |
INSTANT DOWNLOAD PDF.
*Core Domains*
*- Regulatory Compliance and State Laws (EPA, OSHA, NC DHHS)*
*- Health Effects and Medical Surveillance*
*- Personal Protective Equipment and Respirator Programs*
*- State-of-the-Art Work Practices and Engineering Controls*
*- Containment Design and Negative Pressure Ventilation*
*- Decontamination Procedures and Waste Disposal*
*- Air Monitoring, Sampling, and Analysis*
*- Supervisor Responsibilities and Contract Specifications*
*Introduction*
*The purpose of this comprehensive assessment is to evaluate the competency, speciali
Section One: Questions 1–100
Question 1
,Which North Carolina state agency is primarily responsible for enforcing the asbestos
accreditation and permitting regulations under the Health Hazards Control Unit (HHCU)?
A. Department of Environmental Quality (DEQ)
B. Department of Labor (DOL)
C. Department of Health and Human Services (DHHS)
D. Wildlife Resources Commission
Correct answer: 🟢 C. Department of Health and Human Services (DHHS)
Explanation: 🔴 RATIONALE: In North Carolina, the Health Hazards Control Unit
(HHCU) is housed within the Division of Public Health under the Department of Health
and Human Services (DHHS). This unit oversees asbestos accreditations, certifications,
and abatement project permits across the state.
Question 2
An asbestos supervisor is preparing a negative pressure enclosure for an abatement
project in North Carolina. What is the minimum acceptable pressure drop across the
containment barrier as required by OSHA and state standards?
A. -0.01 inches of water column
B. -0.02 inches of water column
C. -0.05 inches of water column
D. -0.10 inches of water column
,Correct answer: 🟢 B. -0.02 inches of water column
Explanation: 🔴 RATIONALE: Both OSHA regulations (29 CFR 1926.1101) and industry
standards state that a negative pressure enclosure must maintain a minimum pressure
differential of -0.02 inches of water column relative to the outside air to prevent the
migration of airborne fibers.
Question 3
During a Class I asbestos abatement operation, an employee's respirator must be
selected based on the airborne concentration of asbestos fibers. If the expected
exposure concentration is 0.5 fibers per cubic centimeter (f/cc), what is the minimum
assigned protection factor (APF) required for the respirator?
A. 5
B. 10
C. 50
D. 1000
Correct answer: 🟢 B. 10
Explanation: 🔴 RATIONALE: The OSHA Permissible Exposure Limit (PEL) is 0.1 f/cc.
An exposure of 0.5 f/cc is 5 times the PEL. A half-mask air-purifying respirator has an
APF of 10, which safely covers exposures up to 10 times the PEL (1.0 f/cc), making it the
minimum requirement.
, Question 4
Under the EPA Asbestos Hazard Emergency Response Act (AHERA) regulations, visual
inspections of a school building for asbestos-containing materials (ACM) must be
conducted by an accredited inspector at least once every:
A. Six months
B. Year
C. Three years
D. Five years
Correct answer: 🟢 C. Three years
Explanation: 🔴 RATIONALE: AHERA requires that local education agencies ensure an
accredited inspector performs a reinspection of all known or assumed ACBM in each
school building at least once every three years.
Question 5
A supervisor notes a significant tear in the poly wall of the dirty room within the
decontamination unit during active removal operations. What is the immediate correct
course of action?
A. Wait until the end of the shift to apply duct tape to avoid disrupting work flow.
B. Increase the flow rate of the negative air machines to compensate for the leak.
