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1. Which of the following is the primary federal agency regulating asbestos
in the workplace?
A. OSHA
B. EPA
C. CDC
D. ATSDR
Answer: A. OSHA
Rationale: OSHA sets occupational exposure limits and enforces
workplace safety regulations for asbestos.
2. What is the maximum permissible exposure limit (PEL) for asbestos
fibers in the air over an 8-hour work shift?
A. 0.01 fibers/cc
B. 0.1 fibers/cc
C. 1.0 fibers/cc
D. 5.0 fibers/cc
Answer: B. 0.1 fibers/cc
Rationale: OSHA's PEL for asbestos is 0.1 fibers per cubic centimeter of
air over an 8-hour time-weighted average.
3. Which type of asbestos-containing material (ACM) is considered friable?
A. Vinyl floor tiles
, B. Pipe insulation
C. Ceiling tiles glued with asbestos
D. Roof shingles
Answer: B. Pipe insulation
Rationale: Friable ACM can be crumbled by hand pressure, releasing
fibers into the air.
4. Which of the following is a requirement for decontamination facilities in
asbestos abatement?
A. Must have separate clean and dirty rooms
B. Must be portable only
C. Can be shared with other contractors
D. No specific requirements
Answer: A. Must have separate clean and dirty rooms
Rationale: Proper decontamination units prevent cross-contamination
and ensure worker safety.
5. What type of respirator is required for a Class I asbestos abatement
project?
A. N95
B. Half-mask respirator
C. Full-face HEPA respirator
D. Powered air-purifying respirator (PAPR) with HEPA
Answer: D. Powered air-purifying respirator (PAPR) with HEPA
Rationale: Class I projects involve high-risk friable ACM; PAPRs provide
full protection.
6. What is the minimum wetting agent required when removing friable
asbestos?
A. 5% solution
B. 10% solution
C. Enough to prevent dust release
D. None
Answer: C. Enough to prevent dust release
Rationale: Wetting ACM minimizes airborne fibers during removal.
, 7. How long must asbestos waste be stored on-site before disposal?
A. 24 hours
B. 48 hours
C. Until the project is complete
D. Only until transportation
Answer: C. Until the project is complete
Rationale: Waste must remain in sealed containers until properly
transported to prevent contamination.
8. Which of the following is a Class II asbestos project?
A. Removal of thermal system insulation
B. Removal of asbestos-containing floor tiles
C. Removal of sprayed-on fireproofing
D. Emergency response to asbestos spill
Answer: B. Removal of asbestos-containing floor tiles
Rationale: Class II involves non-friable asbestos-containing materials
like floor tiles and siding.
9. How should asbestos waste be labeled before disposal?
A. “Hazardous Waste”
B. “Asbestos Waste” with appropriate warning signs
C. No label is required
D. “Flammable”
Answer: B. “Asbestos Waste” with appropriate warning signs
Rationale: Proper labeling ensures waste handlers are aware of
asbestos hazards.
10.What is the minimum training requirement for a Texas Asbestos
Abatement Supervisor?
A. 24 hours of training
B. 40 hours of training
C. 10 hours of training
D. No training required
Answer: B. 40 hours of training
Rationale: Texas regulations require supervisors to complete 40 hours
of training plus hands-on experience.