definiens: means any and all materials ( including without limitation substances, chemicals compounds, mixtures, products, bypr oducts, biologic agents, living or genetically modified materials, wastes, pollutants and contaminants ), that are ( A ) used by Supplier in performing services under this Agreement and are identified in any of the following clauses of this Section 1.26 ; ( B ) ( i ) listed, classified, characterized or regulated pursuant to Environmental Laws ; ( ii ) identified or classified as,,,,,,,,,,,,,, or in the environment ; or ( iii ) in quantity or concentration capable of causing harm or injury to human health, natural resources or the environment, if Released or resulting in human exposure ; or ( C ) petroleum products and their derivatives, asbestos -containing material, lead -based paint, polychlorinated biphenyls, urea formaldehyde, or viral, bacterial or fungal material