Which statement best describes the relationship between Subtitle C and Subtitle D?

• A. Subtitle C regulates only nonhazardous solid waste
• B. Subtitle C regulates only hazardous waste, a subset of solid waste; Subtitle D regulates primarily nonhazardous solid waste
• C. Subtitle D regulates hazardous waste
• D. Subtitle J regulates municipal waste

Answer: (B)

The relationship being tested is how the RCRA subtitles separate regulation of waste types. Subtitle C handles hazardous waste, which is a subset of solid waste, and subject to strict management from generation through disposal. Subtitle D covers nonhazardous solid waste, including most municipal waste, and does not regulate hazardous wastes. That’s why the statement describing Subtitle C as regulating hazardous waste (a subset of solid waste) and Subtitle D as regulating primarily nonhazardous solid waste is the best fit.

The other options misstate the scope: Subtitle C does not regulate only nonhazardous waste, and Subtitle D does not regulate hazardous waste. The reference to Subtitle J isn’t applicable to municipal waste regulation.