CHMM Disposition of Hazardous Materials 2 — Questions and Answers
Question 1: Under RCRA, what is the maximum accumulation time for large quantity generators (LQGs) before hazardous waste must be shipped off-site?
- 30 days
- 60 days
- 90 days (Correct answer)
- 180 days
Correct answer: 90 days
LQGs may accumulate hazardous waste on-site for no more than 90 days without a storage permit.
Question 2: Which document must accompany a hazardous waste shipment from the point of generation to the disposal facility?
- Bill of lading
- Uniform Hazardous Waste Manifest (Correct answer)
- Safety Data Sheet
- EPA Form 8700-12
Correct answer: Uniform Hazardous Waste Manifest
The Uniform Hazardous Waste Manifest (EPA Form 8700-22) must travel with hazardous waste shipments under RCRA.
Question 3: A facility generates used oil contaminated with a listed hazardous waste solvent. How must this mixture be managed?
- As used oil only, under 40 CFR Part 279
- As hazardous waste under RCRA Subtitle C (Correct answer)
- As non-hazardous waste if the solvent concentration is below 1%
- As a recyclable material exempt from RCRA
Correct answer: As hazardous waste under RCRA Subtitle C
Used oil mixed with listed hazardous waste is regulated as hazardous waste under RCRA Subtitle C, not as used oil.
Question 4: What is the primary regulatory mechanism that allows hazardous waste to be reclaimed and reused without full RCRA Subtitle C regulation?
- Contained-in policy
- Land Disposal Restriction variance
- Hazardous waste recycling exemption (Correct answer)
- Derived-from rule
Correct answer: Hazardous waste recycling exemption
Certain hazardous waste recycling activities are excluded or exempt from full RCRA regulation under 40 CFR 261.2 and related provisions.
Question 5: Which RCRA standard applies to the treatment, storage, and disposal of hazardous waste at a permitted facility?
- 40 CFR Part 261
- 40 CFR Part 262
- 40 CFR Part 264 (Correct answer)
- 40 CFR Part 268
Correct answer: 40 CFR Part 264
40 CFR Part 264 sets standards for owners and operators of permitted hazardous waste TSD facilities.
Question 6: When a listed hazardous waste is treated and no longer exhibits hazardous characteristics, it may still be regulated as hazardous waste. Which rule requires this?
- Mixture rule
- Derived-from rule (Correct answer)
- Land disposal restrictions rule
- Anti-backsliding rule
Correct answer: Derived-from rule
The derived-from rule under 40 CFR 261.3(c) states that residuals derived from treating listed hazardous waste remain listed hazardous waste.
Question 7: A company discovers that drums of waste were sent to an unpermitted disposal site years ago. Under CERCLA, who can be held liable for cleanup costs?
- Only the current site owner
- Only the waste generator
- Only the transporter who delivered the waste
- Current and former owners, operators, generators, and transporters (Correct answer)
Correct answer: Current and former owners, operators, generators, and transporters
CERCLA imposes strict, joint, and several liability on a broad class of potentially responsible parties including past and present owners, operators, generators, and transporters.
CHMM Disposition of Hazardous Materials 2
Under RCRA, what is the maximum accumulation time for large quantity generators (LQGs) before hazardous waste must be shipped off-site?