What best describes the primary differences between Subtitle C and Subtitle D?

What best describes the primary differences between Subtitle C and Subtitle D?

• A. Subtitle C regulates only haz waste, a subset of solid waste, whereas Subtitle D primarily regulates nonhazard solid waste.
• B. Subtitle C regulates nonhazardous waste across all sectors.
• C. Subtitle D regulates only haz waste, a subset of solid waste, whereas Subtitle C primarily regulates nonhazard solid waste.
• D. Subtitle D regulates only nonhazardous waste, while Subtitle C regulates all waste types.

Answer: (A)

The main idea here is how waste is categorized under RCRA: hazardous waste versus nonhazardous solid waste. Subtitle C is the hazardous waste program, applying to wastes that are hazardous and require special controls across generation, transportation, treatment, storage, and disposal. Subtitle D covers nonhazardous solid waste—primarily municipal solid waste and other nonhazardous industrial wastes—handled mainly through state and local programs and without the same strict federal permitting as hazardous waste. So describing Subtitle C as regulating hazardous waste, a subset of solid waste, while Subtitle D focuses on nonhazardous solid waste correctly captures the fundamental difference. The other options misstate the scope—for example, Subtitle C does not regulate nonhazardous wastes across all sectors, and Subtitle D is not limited to hazardous materials or described as regulating all waste types.

The main idea here is how waste is categorized under RCRA: hazardous waste versus nonhazardous solid waste. Subtitle C is the hazardous waste program, applying to wastes that are hazardous and require special controls across generation, transportation, treatment, storage, and disposal. Subtitle D covers nonhazardous solid waste—primarily municipal solid waste and other nonhazardous industrial wastes—handled mainly through state and local programs and without the same strict federal permitting as hazardous waste. So describing Subtitle C as regulating hazardous waste, a subset of solid waste, while Subtitle D focuses on nonhazardous solid waste correctly captures the fundamental difference. The other options misstate the scope—for example, Subtitle C does not regulate nonhazardous wastes across all sectors, and Subtitle D is not limited to hazardous materials or described as regulating all waste types.