CHMM Disposition of Hazardous Materials 3 — Questions and Answers
Question 1: Under RCRA Land Disposal Restrictions (LDRs), what must generators do before sending restricted hazardous waste to a land disposal unit?
- Obtain an EPA variance only
- Ensure the waste meets treatment standards and notify the receiving facility (Correct answer)
- Apply for a delisting petition
- Submit a waste minimization plan to EPA
Correct answer: Ensure the waste meets treatment standards and notify the receiving facility
Generators must ensure restricted wastes meet LDR treatment standards and provide a one-time written notice to the receiving TSDF.
Question 2: Which disposal method involves injecting treated or untreated hazardous waste into deep geologic formations and is regulated under the Safe Drinking Water Act?
- Secure chemical landfill
- Deep well injection (Correct answer)
- Surface impoundment
- Land treatment unit
Correct answer: Deep well injection
Deep well injection (Class I hazardous waste wells) is regulated under the Underground Injection Control program of the Safe Drinking Water Act.
Question 3: A small quantity generator (SQG) accumulating hazardous waste on-site must comply with which of the following?
- Full TSDF permit requirements
- A 270-day accumulation limit with biennial reporting
- A 270-day accumulation limit and specific container/tank standards (Correct answer)
- No accumulation time limit if containers are labeled properly
Correct answer: A 270-day accumulation limit and specific container/tank standards
SQGs may accumulate hazardous waste for up to 270 days and must meet container and tank management standards under 40 CFR 262.
Question 4: Which technology-based treatment standard under LDRs allows land disposal of hazardous waste when the waste cannot practicably be treated to meet concentration-based standards?
- Best demonstrated available technology (BDAT) variance
- No-migration petition
- Treatability variance (Correct answer)
- Contained-in determination
Correct answer: Treatability variance
A treatability variance under 40 CFR 268.44 allows alternative treatment standards when wastes cannot meet established LDR standards.
Question 5: What is the primary purpose of a RCRA Corrective Action?
- To license new TSD facilities
- To remediate releases of hazardous waste from TSD facilities (Correct answer)
- To establish generator accumulation limits
- To set treatment standards for land disposal
Correct answer: To remediate releases of hazardous waste from TSD facilities
RCRA Corrective Action (Subtitle C, Section 3004(u)) requires TSDFs to investigate and clean up releases of hazardous waste or constituents.
Question 6: Under DOT regulations, what information is required on a label affixed to a hazardous materials package?
- Shipper's name, UN number, and net weight only
- Hazard class, packing group, and shipper's phone number
- Primary hazard class label and any required subsidiary hazard labels (Correct answer)
- Only the proper shipping name
Correct answer: Primary hazard class label and any required subsidiary hazard labels
DOT requires hazardous materials packages to display the primary hazard class label and any required subsidiary hazard labels per 49 CFR 172 Subpart E.
Question 7: Which section of RCRA authorizes EPA to take emergency action, including ordering immediate cessation of hazardous waste activities, when there is an imminent and substantial endangerment?
- Section 3005 (permitting)
- Section 3008 (enforcement)
- Section 7003 (imminent hazard) (Correct answer)
- Section 9003 (underground storage tanks)
Correct answer: Section 7003 (imminent hazard)
RCRA Section 7003 authorizes EPA to seek judicial or administrative action to address imminent and substantial endangerment from hazardous waste.
CHMM Disposition of Hazardous Materials 3
Under RCRA Land Disposal Restrictions (LDRs), what must generators do before sending restricted hazardous waste to a land disposal unit?