A hazardous ash residue from incinerating solvent waste is regulated under the derived-from rule. Which statement is correct?

A hazardous ash residue from incinerating solvent waste is regulated under the derived-from rule. Which statement is correct?

• A. the ash is considered nonhazardous solid waste and may be disposed of in any municipal solid waste facility that accepts ashes
• B. the ash is considered a hazardous waste because of the 'derived-form' rule and must be disposed of in a hazardous waste facility
• C. the ash is considered an ignitable solid waste and must be disposed of in a buried municipal solid waste facility
• D. the ash is considered a K-listed waste and must be disposed of in a hazardous waste facility

Answer: (B)

The key idea is that hazardous waste status follows the source waste through the derived-from rule. When solvent waste is incinerated, the residue (the ash) contains the hazardous constituents from that original waste. Under the derived-from rule, any solid waste derived from a listed or characteristic hazardous waste remains hazardous waste itself. So the ash must be managed as hazardous waste and disposed of at a hazardous waste facility, not a general municipal waste facility. The other statements don’t fit because they misstate how derived-from works or mix in unrelated waste classifications. Saying the ash is nonhazardous ignores that the hazard remains inherited from the solvent waste. Attributing the ash to ignition characteristics or to being K-listed adds unnecessary or incorrect qualifiers; those classifications aren’t dictated by the derived-from rule in this scenario. The correct conclusion is that the ash is hazardous and must go to a hazardous waste disposal facility.

The key idea is that hazardous waste status follows the source waste through the derived-from rule. When solvent waste is incinerated, the residue (the ash) contains the hazardous constituents from that original waste. Under the derived-from rule, any solid waste derived from a listed or characteristic hazardous waste remains hazardous waste itself. So the ash must be managed as hazardous waste and disposed of at a hazardous waste facility, not a general municipal waste facility.

The other statements don’t fit because they misstate how derived-from works or mix in unrelated waste classifications. Saying the ash is nonhazardous ignores that the hazard remains inherited from the solvent waste. Attributing the ash to ignition characteristics or to being K-listed adds unnecessary or incorrect qualifiers; those classifications aren’t dictated by the derived-from rule in this scenario. The correct conclusion is that the ash is hazardous and must go to a hazardous waste disposal facility.