Which of the following waste is regulated under RCRA Subtitle C hazardous waste regulation?

• A. industrial WW discharges
• B. spent wood preservatives
• C. military munitions
• D. radioactive waste

Answer: (C)

RCRA Subtitle C covers waste that is identified as hazardous either by listing or by exhibiting certain hazardous characteristics. It isn’t used for every type of waste; everyday discharges to water are regulated under the Clean Water Act, not as hazardous waste under Subtitle C; radioactive waste falls under nuclear regulators, not RCRA; and military munitions are governed by their own regulatory framework and special rules, not the standard Subtitle C hazardous waste regime. Spent wood preservatives fit the Subtitle C definition because they contain hazardous constituents (such as creosote or pentachlorophenol) and are managed as hazardous waste once spent. So among the options, spent wood preservatives are the waste type regulated under RCRA Subtitle C.