A solid waste can be a:

• A. Hazardous waste
• B. Non-hazardous waste
• C. Military munition waste
• D. All of the above

Answer: (D)

Solid waste classification hinges on the waste's properties and regulatory status, not on a single universal label. A solid waste can be hazardous if it exhibits characteristics like ignitability, corrosivity, reactivity, or toxicity, or if it is listed as hazardous. It can be non-hazardous if it doesn't meet those criteria and isn’t listed. Military munition waste refers to discarded munitions and falls under its own regulatory category due to the potential energetic materials, toxic components, and special handling needed; these items can still be considered solid waste, but under the Military Munitions Rule with specific disposal requirements. Because a single waste stream could be hazardous, non-hazardous, or military munition waste depending on its contents and regulatory definitions, “All of the above” is the best choice. In practice, you determine the category by analyzing the waste and applying the relevant regulations.