The introduction into soil â independent of whether that introduction occurs at the production site of an undertaking or outside or through the use of the undertakingâs products and/or services â as a result of human activity, of substances, vibrations, heat or noise which may be harmful to human health or the environment, result in damage to material property, or impair or interfere with amenities and other legitimate uses of the environment. Soil pollutants include inorganic pollutants, persistent organic pollutants (POPs), pesticides, nitrogen and phosphorus compounds, etc.