40 CFR §264.178
Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
At closure, all hazardous waste and hazardous waste residues must be removed from the containment system. Remaining containers, liners, bases, and soil containing or contaminated with hazardous waste or hazardous waste residues must be decontaminated or removed.