Tenant shall not use or suffer the use of the Leased Property as a landfill, or dump, or as a site for storage, treatment, or disposal of “Hazardous Wastes,” “Hazardous Substances” or toxic substances (as such terms are hereinafter defined), except to the extent done so in compliance with all environmental laws. Tenant shall be liable to Landlord for any and all cleanup costs and any and all other charges, fees or penalties relating to Tenant’s use, disposal, transportation, generation or sale of Hazardous Substances on or at the Leased Property. Tenant shall and hereby does agree to pay, protect, defend, indemnify and hold Landlord harmless from and against any and all losses, damages, expenses, fees, claims, costs and liabilities (including, but not limited to reasonable attorneys’ fees actually incurred) arising out of or in any manner related to the presence of “Hazardous Substances” at, on or in the Leased Property which directly results from an act or omission of Tenant during its period of occupancy. The obligations of Tenant under this paragraph shall survive any expiration or termination of this Lease.

“Hazardous Materials” means chemicals, pollutants, contaminants, wastes, toxic or contaminated substances, hazardous substances, petroleum or petroleum products, asbestos-containing materials, mold or similar materials, including, without limitation, any substances which are “hazardous substances,” “hazardous wastes,” “hazardous materials” or “toxic substances” under the Hazardous Materials Laws (as hereinafter defined) and/or other applicable environmental laws, ordinances or regulations.

"Hazardous Materials" shall mean any flammable explosives, radioactive materials, hazardous wastes, toxic substances or related materials, including, without limitation, any substances defined as or included in the definition of "hazardous substances", hazardous wastes", hazardous materials", or "toxic substances", under any applicable federal or state laws or regulations, as now existing or hereafter amended.

“Hazardous Materials” shall mean # any petroleum or petroleum products, radioactive materials, asbestos in any form that is or could become friable, urea formaldehyde foam insulation, polychlorinated biphenyls, and radon gas; # any chemicals, materials or substances defined as or included in the definition of “hazardous substances,” “hazardous waste,” “hazardous materials,” “extremely hazardous substances,” “restricted hazardous waste,” “toxic substances,” “toxic pollutants,” “contaminants,” or “pollutants,” or words of similar import, under any applicable Environmental Law; and # any other chemical, material or substance regulated under any Environmental Law.

Hazardous Substances. The words “Hazardous Substances” mean materials that, because of their quantity, concentration or physical, chemical or infectious characteristics, may cause or pose a present or potential hazard to human health or the environment when improperly used, treated, stored, disposed of, generated, manufactured, transported, or otherwise handled. The words “Hazardous Substances” are used in their very broadest sense and include without limitation any and all hazardous or toxic substances, materials or waste as defined by or listed under the Environmental Laws. The term “Hazardous Substances” also includes, without limitation, petroleum and petroleum by-products or any fraction thereof and asbestos.

“Hazardous Substances” has the meaning specified in Section 4.10(b).

“Environmental Law” means any Legal Requirement in effect as of the Closing Date that requires # advising appropriate authorities, employees, and the public of intended or actual releases of Hazardous Substances, violations of discharge limits, or other prohibitions and of the commencements of activities, such as resource extraction or construction, that could have significant impact on the environment or result in an Environmental Claim; # preventing or reducing to acceptable levels the release of Hazardous Substances into the environment; # the cleaning up of Hazardous Substances that have been released, preventing the threat of release, or paying the costs of such cleanup; # the treatment, storage, disposal, generation and transportation of industrial, toxic or Hazardous Substances; # the prevention of any release or threat of release into the environment of Hazardous Substances; # the closure or removal of underground and other storage tanks or vessels, abandoned, disposed or discarded barrels, containers and other closed receptacles; # any procedures relating to the manufacture, processing, use, distribution, treatment, storage, disposal, transportation or handling of Hazardous Substances; and # the regulation by any federal, state or local governing entity of any matter, the violation of which could result in an Environmental Claim being asserted.

“Hazardous Substances” shall have the meaning set forth in the Environmental Indemnity.

"Polluting Substances" shall mean all pollutants, contaminants, chemicals or industrial, toxic or hazardous substances or wastes and shall include, without limitation, any flammable explosives, radioactive materials, oil, hazardous materials, hazardous or solid wastes, hazardous or toxic substances or related materials defined in CERCLA/SARA, RCRA/HSWA and in the HMTA; provided, in the event either CERCLA/SARA, RCRA/HSWA or HMTA is amended so as to broaden the meaning of any term defined thereby, such broader meaning shall apply subsequent to the effective date of such amendment and, provided further, to the extent that the Laws of any State or other Tribunal establish a meaning for "hazardous substance", "hazardous waste," "hazardous material," "solid waste" or "toxic substance" which is broader than that specified in CERCLA/SARA, RCRA/HSWA, or HMTA, such broader meaning shall apply.

radioactive materials, asbestos, urea formaldehyde foam insulation, polychlorinated biphenyls, petroleum and petroleum products, methane, hazardous materials, Hazardous Wastes, hazardous or Toxic Substances or related materials as defined in or subject to regulation under Environmental Laws.