COMPLETE QUESTIONS AND CORRECT ANSWERS
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Subject Area Asbestos Abatement and Regulatory Compliance
Description This comprehensive examination assesses advanced knowledge of asbestos
abatement supervisory practices in Texas, including federal and state regulations,
work practices, air monitoring, waste disposal, and emergency response. It is
designed for experienced professionals seeking supervisor-level certification.
Expected Grade A+
Total Questions 100
Duration 3 hours
Learning Outcomes 1. Demonstrate mastery of NESHAP, OSHA, and TDSHS asbestos regulations.
2. Apply proper containment, removal, and disposal techniques for friable and
non-friable ACM.
3. Interpret air monitoring data and clearance criteria to ensure safe reoccupancy.
4. Develop and implement site-specific abatement plans and emergency
procedures.
Accreditation Meets Texas Department of State Health Services (TDSHS) requirements for
Asbestos Abatement Supervisor licensure, adhering to EPA and OSHA standards.
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,1. During a renovation project in a building built in 1960, a supervisor identifies
thermal system insulation (TSI) on pipes that is suspected to contain asbestos. Bulk
samples are collected and analyzed by PLM. The lab reports that the insulation
contains 5% chrysotile asbestos. Which of the following actions is most appropriate
regarding the regulatory classification of this material under the NESHAP?
A. The material is classified as Category I non-friable ACM because it is TSI and contains
less than 10% asbestos.
B. The material is classified as Category II non-friable ACM because it is TSI and has been
sampled.
C. The material is classified as friable asbestos-containing material (ACM) because TSI is
typically friable.
D. The material is classified as non-asbestos-containing material because the asbestos
content is below 10%.
Answer: C. The material is classified as friable asbestos-containing material
(ACM) because TSI is typically friable.
Under NESHAP, thermal system insulation (TSI) is presumed to be friable ACM
regardless of asbestos percentage because it is applied in a manner that can be
crumbled by hand pressure. Even though the asbestos content is 5%, the material is
friable by nature. Category I non-friable ACM includes materials like floor tile that are
not friable. Category II non-friable ACM includes materials that are not friable but
may become friable during removal. Thus, the correct classification is friable ACM.
2. A supervisor is planning an abatement project involving the removal of 300 linear
feet of asbestos-containing pipe insulation in a mechanical room. The project will use
negative pressure containment with three-stage decontamination. According to
OSHA, what is the minimum number of air changes per hour (ACH) that must be
maintained in the containment area to ensure adequate ventilation?
A. 4 ACH
B. 6 ACH
C. 8 ACH
D. 12 ACH
Answer: B. 6 ACH
OSHA's asbestos standard (29 CFR 1926.1101) requires that negative pressure
enclosures used for asbestos abatement maintain a minimum of 6 air changes per hour.
This ensures that airborne fiber concentrations are minimized. Four ACH is
insufficient; 8 and 12 ACH exceed the minimum but are not required unless specified
by a more stringent plan. The correct answer is 6 ACH.
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,3. A supervisor is reviewing air monitoring data from a large-scale abatement
project. The PCM analysis of personal samples shows fiber concentrations of 0.15
f/cc for the worker inside the containment and 0.02 f/cc for the worker in the clean
room. The clearance air sample (PCM) from the containment after cleanup is 0.01
f/cc. Which of the following conclusions is most appropriate regarding regulatory
compliance?
A. The project is in compliance because all sample results are below the OSHA PEL of 0.1
f/cc.
B. The project is in compliance because clearance air is below 0.01 f/cc, meeting EPA
requirements.
C. The project is not in compliance because the worker inside the containment exceeded the
OSHA action level of 0.1 f/cc.
D. The project is not in compliance because the clean room sample indicates possible
contamination of the decontamination area.
Answer: A. The project is in compliance because all sample results are below the
OSHA PEL of 0.1 f/cc.
The OSHA permissible exposure limit (PEL) for asbestos is 0.1 f/cc as an 8-hour TWA.
The worker inside the containment had 0.15 f/cc, which exceeds the PEL, but the
question states that the sample is from inside containment, which is expected to have
higher levels. However, the PEL applies to all employees; if the worker's exposure
exceeds 0.1 f/cc, the employer must implement engineering controls and respiratory
protection. The action level is 0.1 f/cc for an 8-hour TWA; exceeding it triggers
additional requirements. The clearance air of 0.01 f/cc is below the EPA clearance
standard of 0.01 f/cc for PCM. But the clean room sample of 0.02 f/cc is above the
clearance level, suggesting possible contamination of the clean room. However, the
question asks about regulatory compliance. The correct answer is that the project is not
in compliance because the worker inside containment exceeded the PEL. Option A is
incorrect because it states compliance, but the worker exceeded the PEL. Option C
correctly identifies non-compliance due to exceeding the action level (0.1 f/cc is the
action level, not PEL? Actually, the PEL is 0.1 f/cc, and the action level is 0.1 f/cc as
well? Wait: OSHA's PEL for asbestos is 0.1 f/cc as an 8-hour TWA. The action level is
0.1 f/cc also? No, the action level is 0.1 f/cc for an 8-hour TWA, same as PEL? Actually,
the action level is 0.1 f/cc, and the PEL is 0.1 f/cc? That seems odd. Let's clarify:
OSHA's asbestos standard (29 CFR 1926.1101) sets the PEL at 0.1 f/cc as an 8-hour
TWA. The action level is 0.1 f/cc as an 8-hour TWA? That is correct; they are the same.
But typically, the action level is half the PEL. However, for asbestos, the PEL and action
level are both 0.1 f/cc. So exceeding 0.1 f/cc triggers both PEL and action level
requirements. So the worker's exposure of 0.15 f/cc exceeds both. Therefore, the project
is not in compliance unless proper controls are in place. The clean room sample of 0.02
f/cc is above the clearance level of 0.01 f/cc, indicating potential contamination. So the
most appropriate conclusion is that the project is not in compliance due to the clean
room contamination. Option D is correct. Let's re-evaluate: Option A says compliance
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, because all below PEL, but worker inside is above PEL, so false. Option B says
compliance because clearance is below 0.01, but clean room is above, so false. Option C
says non-compliance because worker exceeded action level, which is true, but the action
level is 0.1 f/cc, and the worker exceeded it. However, the action level triggers
monitoring and other requirements, but does not necessarily mean non-compliance if
the employer has implemented controls. But the question likely expects that exceeding
the PEL is a violation. Option D is also valid because the clean room sample indicates
contamination. The most appropriate is D because it points to a specific regulatory
breach: the clean room must be kept clean. According to OSHA, the decontamination
area must be maintained to prevent fiber migration. A sample of 0.02 f/cc in the clean
room suggests that the decontamination procedures are inadequate. Therefore, D is the
best answer.
4. A supervisor is tasked with developing an emergency response plan for a fire that
occurs in an area where asbestos-containing materials are present. The fire has not
yet reached the ACM. Which of the following actions should the supervisor prioritize
to minimize airborne asbestos fiber release?
A. Immediately wet the ACM with water to prevent ignition.
B. Evacuate all personnel and seal the area with plastic sheeting.
C. Use a HEPA vacuum to clean the area before the fire spreads.
D. Apply a bridging encapsulant to all exposed ACM surfaces.
Answer: B. Evacuate all personnel and seal the area with plastic sheeting.
In an emergency where fire threatens ACM, the priority is life safety and containment.
Evacuating personnel and sealing the area with plastic sheeting helps prevent fiber
dispersion if the fire reaches the ACM. Wetting the ACM (A) might be done if safe, but
it is not the first priority and could be hazardous if the fire involves electrical
equipment. HEPA vacuuming (C) is time-consuming and not appropriate during a fire.
Encapsulation (D) is a long-term control measure, not an emergency response. Thus, B
is correct.
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