RIA Lead, Asbestos & Silica Safety 2 — Questions and Answers
Question 1: Under the EPA RRP Rule, what is the required warning sign size for posting at a renovation work area?
- 8.5 x 11 inches minimum (Correct answer)
- 11 x 17 inches minimum
- Any size legible from 20 feet
- No specific size is required
Correct answer: 8.5 x 11 inches minimum
EPA RRP requires warning signs of at least 8.5 x 11 inches posted at the perimeter of the work area.
Question 2: Which OSHA standard specifically governs occupational exposure to asbestos in the construction industry?
- 29 CFR 1910.1001
- 29 CFR 1926.1101 (Correct answer)
- 29 CFR 1926.62
- 29 CFR 1910.134
Correct answer: 29 CFR 1926.1101
29 CFR 1926.1101 is OSHA's asbestos standard specifically for the construction industry.
Question 3: What does the term 'friable asbestos' mean in the context of remediation?
- Asbestos that can be easily crumbled by hand pressure when dry (Correct answer)
- Asbestos that is bonded in cement or other solid matrix
- Asbestos with fiber count above 0.1 f/cc
- Asbestos that has been wetted before removal
Correct answer: Asbestos that can be easily crumbled by hand pressure when dry
Friable asbestos can be crumbled, pulverized, or reduced to powder by hand pressure when dry, making it more hazardous.
Question 4: A worker is performing silica-generating tasks for 4 hours per shift. Under OSHA's silica standard, what is the required action level (AL) for respirable crystalline silica?
- 25 µg/m³ as an 8-hour TWA (Correct answer)
- 50 µg/m³ as an 8-hour TWA
- 100 µg/m³ as an 8-hour TWA
- 200 µg/m³ as an 8-hour TWA
Correct answer: 25 µg/m³ as an 8-hour TWA
OSHA's action level for respirable crystalline silica is 25 µg/m³ as an 8-hour TWA, which triggers medical surveillance requirements.
Question 5: When performing lead abatement, what is the required frequency for air monitoring in the work area under OSHA 29 CFR 1926.62?
- Every 6 months after initial monitoring
- Every 3 months if exposure is between AL and PEL (Correct answer)
- Daily for all lead work activities
- Only at project start and completion
Correct answer: Every 3 months if exposure is between AL and PEL
OSHA requires periodic monitoring every 3 months when worker exposure is at or above the AL but below the PEL.
Question 6: Which type of respirator is the minimum required for Class I asbestos work (removal of TSI or surfacing ACM)?
- Half-face APF respirator with P100 filters
- N95 disposable respirator
- Full-face PAPR with HEPA filtration (Correct answer)
- Supplied-air respirator (SAR) in pressure-demand mode
Correct answer: Full-face PAPR with HEPA filtration
Class I asbestos work requires at minimum a full-face PAPR with HEPA filtration or a supplied-air respirator.
Question 7: Under the EPA NESHAP rule for asbestos, what is the minimum amount of regulated asbestos-containing material (RACM) that triggers notification requirements for demolition?
- Any detectable amount in a facility being demolished
- 160 square feet, 260 linear feet, or 35 cubic feet (Correct answer)
- At least 1% asbestos by weight in any material
- Only if the building is over 10,000 square feet
Correct answer: 160 square feet, 260 linear feet, or 35 cubic feet
EPA NESHAP requires advance notification when demolition involves 160 sq ft on facility components, 260 linear feet on pipes, or 35 cubic feet off facility components.
RIA Lead, Asbestos & Silica Safety 2
Under the EPA RRP Rule, what is the required warning sign size for posting at a renovation work area?