Del. Code tit. 7 § 6428
Any provision of this chapter to the contrary notwithstanding, solid waste including infectious waste, generated outside the State shall not be delivered to a facility operated by, or on behalf of, or under contract with the Authority. However, recyclable materials generated outside the State may be delivered for recycling to a recycling center or facility operated by, on behalf of, or under contract with the Authority. This section does not limit the Authority's power under this chapter to promulgate regulations further limiting the delivery of solid waste to its facilities based upon the hazardous, explosive, toxic, pathological, infectious or radioactive properties of the waste, or by reason of its other physical properties, chemical composition or quantity which may have an adverse effect on the Authority's facilities.
7 Del. C. § 6428