Epa Core Knowledge Hazardous Waste Management 2 — Questions and Answers
Question 1: A large quantity generator (LQG) under RCRA must ship hazardous waste off-site within how many days of accumulation start?
- 180 days
- 270 days
- 30 days
- 90 days (Correct answer)
Correct answer: 90 days
LQGs may accumulate hazardous waste on-site for up to 90 days without a storage permit; waste must be shipped to a permitted TSDF after that.
Question 2: The Uniform Hazardous Waste Manifest is required when:
- Disposing of waste in a permitted on-site landfill
- Storing hazardous waste in a satellite accumulation area
- Generating hazardous waste below the small quantity threshold
- Transporting hazardous waste off-site to a treatment, storage, or disposal facility (Correct answer)
Correct answer: Transporting hazardous waste off-site to a treatment, storage, or disposal facility
The manifest is a cradle-to-grave tracking document required whenever hazardous waste is transported off-site to a TSDF, ensuring accountability throughout transport.
Question 3: What is the maximum on-site accumulation time for a small quantity generator (SQG) under RCRA?
- 90 days
- 365 days
- 270 days
- 180 days (Correct answer)
Correct answer: 180 days
Small quantity generators may store hazardous waste on-site for up to 180 days without a storage permit, twice as long as LQGs.
Question 4: Under RCRA, satellite accumulation areas (SAAs) allow accumulation of up to how many gallons of non-acutely hazardous waste at the point of generation?
- 100 gallons
- 25 gallons
- 55 gallons (Correct answer)
- 10 gallons
Correct answer: 55 gallons
SAAs allow accumulation of up to 55 gallons of hazardous waste (or 1 quart of acutely hazardous waste) at or near the point of generation without starting the accumulation time clock.
Question 5: RCRA requires large quantity generators to inspect hazardous waste containers at a minimum frequency of:
- Daily
- Weekly (Correct answer)
- Monthly
- Quarterly
Correct answer: Weekly
LQGs must inspect containers storing hazardous waste at least weekly to identify leaks, deterioration, or other conditions that could cause a release.
Question 6: Which piece of information is NOT required on a hazardous waste label for a container at a generator facility?
- The words 'Hazardous Waste'
- The accumulation start date
- An indication of the hazards of the waste
- The generator's social security number (Correct answer)
Correct answer: The generator's social security number
RCRA labeling requires 'Hazardous Waste,' accumulation start date, hazard indicators, and waste composition — not personal identifiers like social security numbers.
Question 7: Under RCRA's 'mixture rule,' what is the regulatory status of a mixture containing a listed hazardous waste and a non-hazardous solid waste?
- The mixture is non-hazardous if the listed waste is less than 10% by volume
- The entire mixture is classified as a listed hazardous waste (Correct answer)
- The mixture must be tested to determine if it retains hazardous characteristics
- The mixture is exempt from RCRA if properly labeled
Correct answer: The entire mixture is classified as a listed hazardous waste
Under the mixture rule, any mixture containing a listed hazardous waste is itself a listed hazardous waste regardless of the proportion, preventing dilution as a disposal strategy.
Epa Core Knowledge Hazardous Waste Management 2
A large quantity generator (LQG) under RCRA must ship hazardous waste off-site within how many days of accumulation start?