Maryland Code, Environment § 8-401

(1) Spent nuclear reactor fuel;

(2) Liquid waste that results from the operation, in a facility for reprocessing spent nuclear reactor fuel, of a first cycle solvent extraction system or an equivalent system;

(3) Concentrated waste from the operation, in a facility for reprocessing spent nuclear reactor fuel, of a subsequent cycle solvent extraction system or an equivalent system; or

(4) Any solid into which any waste that is described in item (2) or (3) of this subsection has been converted.

(1) Contains or is contaminated with radioactive material emitting primarily beta or gamma radiation; and

(2) Is neither high-level nuclear waste nor transuranic waste.