Md. Code, Environment § 8–401

(a) In this subtitle the following words have the meanings indicated.

(b) “High-level nuclear waste” means:

(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.

(c) “Low-level nuclear waste” means waste that:

(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.

(d) “Transuranic waste” means waste material that is measured or assumed to contain at least 10 nanocuries of transuranic activity per gram of waste.