CHMM Storage 2 — Questions and Answers
Question 1: Under 40 CFR Part 264, what is the maximum time a large quantity generator (LQG) may accumulate hazardous waste on-site without a storage permit?
- 30 days
- 60 days
- 90 days (Correct answer)
- 180 days
Correct answer: 90 days
LQGs may accumulate hazardous waste on-site for up to 90 days without a RCRA storage permit under 40 CFR 262.17.
Question 2: Which NFPA standard specifically addresses the storage of flammable and combustible liquids in buildings and other structures?
- NFPA 30 (Correct answer)
- NFPA 58
- NFPA 70
- NFPA 101
Correct answer: NFPA 30
NFPA 30 is the Flammable and Combustible Liquids Code, which governs their storage in buildings and tanks.
Question 3: A satellite accumulation area (SAA) under RCRA allows accumulation of hazardous waste at or near the point of generation with a maximum container limit of:
- 55 gallons of hazardous waste or 1 quart of acutely hazardous waste (Correct answer)
- 110 gallons of hazardous waste or 1 gallon of acutely hazardous waste
- 55 gallons of hazardous waste only
- Unlimited quantities if containers are properly labeled
Correct answer: 55 gallons of hazardous waste or 1 quart of acutely hazardous waste
SAAs are limited to 55 gallons of hazardous waste or 1 quart of acute hazardous waste per 40 CFR 262.15.
Question 4: When storing incompatible hazardous chemicals, what is the primary hazard that separation is intended to prevent?
- Theft or unauthorized access
- Dangerous reactions such as fire, explosion, or toxic gas release (Correct answer)
- Regulatory non-compliance fines
- Label degradation from chemical vapors
Correct answer: Dangerous reactions such as fire, explosion, or toxic gas release
Separating incompatible chemicals prevents violent reactions including fires, explosions, and generation of toxic gases.
Question 5: Under DOT regulations, which class of placards is required on a transport vehicle carrying hazardous materials in storage awaiting shipment?
- No placards are required for stored materials awaiting shipment
- The same placards required during transport must be displayed
- Only a general DANGER placard is required
- Placards are only required once materials are loaded onto a vehicle (Correct answer)
Correct answer: Placards are only required once materials are loaded onto a vehicle
DOT placarding requirements apply to vehicles during transport; once materials are unloaded into storage, transport placarding rules no longer apply.
Question 6: What does the term 'secondary containment' mean in the context of hazardous materials storage?
- A backup labeling system for chemical containers
- A containment system designed to capture releases from primary containers or tanks (Correct answer)
- A second lock on storage room doors
- The use of double-walled containers as the primary storage vessel
Correct answer: A containment system designed to capture releases from primary containers or tanks
Secondary containment is a system (such as a dike or berm) that captures spills or leaks from the primary storage container to prevent environmental release.
Question 7: OSHA's Process Safety Management (PSM) standard (29 CFR 1910.119) requires facilities to conduct a Process Hazard Analysis (PHA) when they store highly hazardous chemicals above:
- Any quantity, regardless of amount
- Threshold quantities specified in Appendix A of the standard (Correct answer)
- 1,000 pounds for any listed chemical
- Quantities that exceed EPA RMP thresholds only
Correct answer: Threshold quantities specified in Appendix A of the standard
PSM applicability is triggered when a highly hazardous chemical is present above the threshold quantity listed in 29 CFR 1910.119 Appendix A.
CHMM Storage 2
Under 40 CFR Part 264, what is the maximum time a large quantity generator (LQG) may accumulate hazardous waste on-site without a storage permit?