In §§ 7–239.1 through 7–239.5 of this subtitle the following words have the meanings indicated. “Chemical warfare material” means any of the following: Adamsite (Phenarsazine chloride); GA (Ethyl–N, N–dimethyl phosphoramidocyanidate); GB (Isopropyl methyl phosphonofluoridate); GD (Pinacolyl methylphosphonofluoridate); H, HD (Bis(2–chloroethyl) sulfide); HT (60 percent HD and 40 percent T (Bis[2(2–chloroethyl– thio)ethyl]ester)); L (Dichloro(2–chlorovinyl)arsine); T (2–2’ Di (3–chloroethylthio)–diethyl ether); or VX (O–ethyl–S–(2–diisopropylaminoethyl) methyl phosphonothiolate). “Chemical warfare material” includes any substance that has chemical warfare material as an active or principal ingredient or ingredients, and degradation products of chemical warfare material. “Maximum credible event” means a hypothetical, worst–case explosion, fire, or toxic agent release that is realistically possible. “Monitoring data” means data from actual stack emissions under all operating conditions at a controlled hazardous substance facility. “Monitoring data” does not include trial burn data or data derived from incineration of agent simulants. “Research facility” means a facility designated by the U.S. Department of Defense for the research, development, and demonstration of technologies related to chemical warfare materials.