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.
[Comment: At closure as throughout the operating period, unless the owner or operator can demonstrate in accordance with § 261.3 (d) of these regulations that the solid waste removed from the containment system is not a hazardous waste, the owner or operator becomes a generator of hazardous waste and must manage it in accordance with all applicable requirements of Parts 262-266 of these regulations].
7 Del. Admin. Code § 1302-264-I-264.178