definiens: means any chemicals, pollutants, contaminants, wastes, toxic or hazardoussubstances, materials or wastes, petroleum and petroleum derivatives or products, or synthetic or alternatesubstitutes therefor, greenhouse gases, asbestos or asbestos - containing materials or products, polychlorinated biphenyls, hydrogen sulfide, arsenic, cadmium, mercury, lead or lead - based paints ormaterials, radon, fungus, mold, mycotoxins, urea - formaldehyde or other substances that may have anadverse effect on human health or the environment, and including any other substance that is prohibited, listed, defined, designated or classified as dangerous, hazardous, radioactive, corrosive, explosive, infectious, carcinogenic, mutation or toxic or a pollutant or a contaminant under or pursuant to, or that couldresult in liability under, any Law relating to pollution, waste, human health or the environment, or may impairthe environment, the health of any Person, property or plant or animal life