Environmental Compliance Inspector Environmental Compliance Inspector Hazardous Waste Management Questions and Answers 2 — Questions and Answers
Question 1: Under RCRA, which of the following is the maximum accumulation time allowed for a large quantity generator (LQG) of hazardous waste before it must be shipped offsite?
- 90 days (Correct answer)
- 180 days
- 270 days
- 365 days
Correct answer: 90 days
Large quantity generators under RCRA may accumulate hazardous waste onsite for up to 90 days without a storage permit.
Question 2: What is the primary purpose of a hazardous waste manifest during transportation?
- To track the waste from generation through final disposal (Correct answer)
- To calculate disposal fees for the treatment facility
- To notify local emergency responders of the shipment route
- To certify that the generator has minimized waste volume
Correct answer: To track the waste from generation through final disposal
The uniform hazardous waste manifest provides cradle-to-grave tracking, documenting the waste from the point of generation through transportation to its final disposal destination.
Question 3: Which land disposal restriction (LDR) treatment standard must hazardous waste meet before placement in a land disposal unit?
- Universal Treatment Standards (UTS) (Correct answer)
- Best Available Technology (BAT) standards
- Maximum Contaminant Levels (MCLs)
- Ambient Water Quality Criteria (AWQC)
Correct answer: Universal Treatment Standards (UTS)
The Universal Treatment Standards established under 40 CFR 268 specify concentration-based or technology-based standards that hazardous waste must meet before land disposal.
Question 4: During an inspection, you discover that a facility is storing incompatible hazardous wastes in adjacent containers without a berm or dike between them. Which regulation is most directly violated?
- 40 CFR 264.177 - Special requirements for incompatible wastes (Correct answer)
- 40 CFR 264.171 - Condition of containers
- 40 CFR 264.176 - Special requirements for ignitable or reactive waste
- 40 CFR 264.175 - Containment systems
Correct answer: 40 CFR 264.177 - Special requirements for incompatible wastes
40 CFR 264.177 specifically requires that incompatible wastes be separated by a dike, berm, wall, or other device to prevent contact in the event of a spill.
Question 5: What does the toxicity characteristic leaching procedure (TCLP) determine about a waste?
- Whether the waste will leach toxic contaminants above regulatory thresholds in a landfill environment (Correct answer)
- Whether the waste is ignitable under standard temperature and pressure
- Whether the waste contains listed hazardous constituents from the F, K, P, or U lists
- Whether the waste exceeds corrosivity limits based on pH testing
Correct answer: Whether the waste will leach toxic contaminants above regulatory thresholds in a landfill environment
The TCLP simulates landfill leaching conditions to determine if a waste will release toxic contaminants at concentrations exceeding the regulatory thresholds established in 40 CFR 261.24.
Question 6: A facility performs elementary neutralization of corrosive hazardous waste in a tank. Under RCRA, what permit exemption may apply to this activity?
- The facility may qualify for a wastewater treatment unit exemption under 40 CFR 264.1(g)(6) (Correct answer)
- The facility is automatically exempt from all RCRA permitting requirements
- The facility qualifies as a conditionally exempt small quantity generator
- The facility must obtain a full RCRA Part B permit regardless of the activity
Correct answer: The facility may qualify for a wastewater treatment unit exemption under 40 CFR 264.1(g)(6)
Elementary neutralization units and wastewater treatment units that meet the conditions of 40 CFR 264.1(g)(6) are exempt from RCRA permitting requirements when treating corrosive or certain other wastes.
Environmental Compliance Inspector Environmental Compliance Inspector Hazardous Waste Management Questions and Answers 2
Under RCRA, which of the following is the maximum accumulation time allowed for a large quantity generator (LQG) of hazardous waste before it must be shipped offsite?