Environmental Compliance Inspector Hazardous Waste Management Questions and Answers — Questions and Answers
Question 1: An inspector observes a 55-gallon container of hazardous waste in a designated satellite accumulation area (SAA). The container is properly labeled and closed, but it is dated three weeks prior. Which of the following is the most accurate assessment of this situation?
- This is a potential violation because once a container in an SAA is full, it must be moved within three days.
- This is a violation because containers in an SAA are not allowed to be dated.
- This is not a violation, as there is no time limit for accumulating waste in an SAA, only a quantity limit. (Correct answer)
- This is a violation because the maximum allowable quantity in an SAA is 30 gallons.
Correct answer: This is not a violation, as there is no time limit for accumulating waste in an SAA, only a quantity limit.
According to 40 CFR 262.15, generators can accumulate up to 55 gallons of non-acute hazardous waste in an SAA without a specific time limit. The accumulation clock (three days) only begins once the 55-gallon limit is exceeded. Therefore, a dated container that is within the quantity limit is not a violation in itself, as there is no requirement to date the container until the quantity limit is surpassed.
Question 2: What is the primary objective of the Land Disposal Restrictions (LDR) program under the Resource Conservation and Recovery Act (RCRA)?
- To promote the recycling and reuse of hazardous materials over disposal.
- To require that hazardous wastes be treated to reduce their toxicity and/or mobility before being land disposed. (Correct answer)
- To establish a 'cradle-to-grave' tracking system for all hazardous waste using a manifest.
- To ensure that all land disposal facilities have adequate financial assurance for closure and post-closure care.
Correct answer: To require that hazardous wastes be treated to reduce their toxicity and/or mobility before being land disposed.
The LDR program, established under RCRA, prohibits the land disposal of untreated hazardous wastes. Its main goal is to ensure that wastes are treated to meet specific standards that reduce the toxicity of hazardous constituents or their ability to migrate, thereby minimizing threats to human health and the environment from land disposal.
Question 3: An inspector is reviewing waste streams at a large office complex. Which of the following items, if disposed of as a hazardous waste, is most appropriately managed under the streamlined Universal Waste regulations?
- Asbestos-containing insulation materials.
- Used oil from building maintenance equipment.
- Spent fluorescent light bulbs. (Correct answer)
- Empty aerosol cans that previously held cleaning products.
Correct answer: Spent fluorescent light bulbs.
The federal Universal Waste program (40 CFR Part 273) provides a streamlined set of regulations for certain common hazardous wastes. Spent fluorescent light bulbs (lamps) are one of the primary categories of universal waste. While some states include aerosol cans, they are not a federal universal waste. Used oil and asbestos have their own distinct management standards.
Question 4: A manufacturing facility generates 1,200 kg of non-acute hazardous waste and 0.5 kg of acute hazardous waste in a calendar month. Based on these quantities, what is the facility's RCRA generator status for that month?
- Very Small Quantity Generator (VSQG)
- Small Quantity Generator (SQG)
- Interim Status Generator
- Large Quantity Generator (LQG) (Correct answer)
Correct answer: Large Quantity Generator (LQG)
A facility is classified as a Large Quantity Generator (LQG) if it generates 1,000 kg or more of non-acute hazardous waste OR more than 1 kg of acute hazardous waste in a calendar month. Since this facility generated 1,200 kg of non-acute hazardous waste, it exceeds the 1,000 kg threshold and is therefore an LQG for that month.
Question 5: A Large Quantity Generator (LQG) shipped a hazardous waste off-site using a manifest. 50 days have passed, and the generator has not received the signed copy of the manifest back from the designated treatment, storage, and disposal facility (TSDF). What is the generator's immediate regulatory responsibility?
- Immediately file an Exception Report with the EPA.
- Contact the transporter and/or the TSDF to determine the status of the shipment. (Correct answer)
- Reship an identical amount of waste to a different TSDF.
- Assume the shipment was lost and notify the National Response Center.
Correct answer: Contact the transporter and/or the TSDF to determine the status of the shipment.
Under 40 CFR 262.42, if a Large Quantity Generator does not receive a signed copy of the manifest from the designated facility within 45 days of the date the waste was accepted by the initial transporter, the generator must contact the transporter and/or the TSDF to investigate the status of the hazardous waste. An Exception Report is only filed after 60 days if the issue is not resolved.
Question 6: An automotive repair shop generates used oil from vehicle maintenance. If the shop intends to send the used oil to be recycled, how is it typically regulated under RCRA?
- It must be managed as a characteristic hazardous waste for ignitability.
- It is regulated under the specific, streamlined standards for used oil management in 40 CFR Part 279. (Correct answer)
- It is exempt from all RCRA regulations as long as it is recycled.
- It must be managed as a listed hazardous waste.
Correct answer: It is regulated under the specific, streamlined standards for used oil management in 40 CFR Part 279.
Used oil that is destined for recycling is subject to the management standards in 40 CFR Part 279, which are less stringent than the full hazardous waste regulations. However, if the used oil is mixed with a listed hazardous waste or is intended for disposal (not recycling), it may be subject to full Subtitle C hazardous waste regulation.
