definiens: ) any Hazardous Materials ( as hereinafter defined ) on, from or affecting any Property ( as hereinafter defined ) in any manner or by any means in violation of any Environmental Laws in any material respect and to the Company 's knowledge, there is no threat of such Release . As used herein, the tenn shall include, without limitation, land . buildings, and laboratory facilities owned or leased by the Company or as to which the Company now has any dUlies, responsibilities ( for cleanup, remedy or otherwise ) or liabilities under any Environmental Laws, or as to which the Company or any subsidiary of the Company may have such duties, responsibilities or liabilities because of past acts or omissions of the Company or any such subsidiary or their predecessors, or because the Company or any such subsidiary oar their predecessors in the past was such an owner or operator of, or bore some other relationship with, such land, buildings or laboratory facilities . The tenn shall include, without limitation, any flammable explosives, petroleum products, petroleum by - products, radioactive materials, hazardous wastes, hazardous substances, toxic substances or related materials as defined by Environmental Laws