(1) because of its quantity, concentration, or physical, chemical or infectious characteristics, the substance causes physical injury or illness to humans when improperly treated, stored, transported, disposed of, or otherwise managed;

(2) the substance poses a present or potential hazard to the environment when improperly treated, stored, transported, disposed of, or otherwise managed;

(3) because of its toxicity or concentration within biological chains, the substance presents a demonstrated threat to biological life cycles when released into the environment;

(4) the substance is one whose manufacture, processing, contribution in commerce, use, possession or disposal is banned, prohibited or limited pursuant to the Toxic Substances Control Act (15 U.S.C., section 2601 et seq.) as of January 1, 2008, as amended from time to time;

(5) the substance is a pesticide whose use or possession is prohibited pursuant to the Federal Insecticide, Fungicide, and Rodenticide Act (7 U.S.C. section 136 et seq.) as of January 1, 2008, as amended from time to time; or

(6) the substance is defined as a hazardous substance pursuant to the Comprehensive Environmental Response, Compensation, and Liability Act (42 U.S.C. section 9601 et seq.) as of January 1, 2008, as amended from time to time.

(1) the substance has an oral LD₅₀ (rat) toxicity of less than 50 milligrams per kilogram;

(2) the substance has an inhalation LC₅₀ (rat) toxicity of less than 2 milligrams per liter;

(3) the substance has a dermal LD₅₀ (rabbit) toxicity of less than 200 milligrams per kilogram; or

(4) the substance causes or is capable of causing death, serious illness or serious physical injury to any person or persons as a consequence of release into the environment.