A clause may be included to explicitly and explicitly recognize changes caused by hazardous substances as “cardinal modifications” or expressly authorize the Contractor or Subcontractor to terminate the Contract/Subcontractor for convenience in such situations. The Comprehensive Environmental Response, Compensation and Liability Act (“CERCLA” or “Superfund”) provides for significant responsibility for the release or disposal of hazardous substances. CERCLA defines waste disposal as follows: · liability in the event of discharge or discharge of hazardous substances considered hazardous prior to the identification of materials and/or exemption from the rights of discharge of hazardous substances of third parties. if the contractor encounters a hazardous material or substance that is not dealt with in the contract file and the appropriate provisions are not sufficient to prevent foreseeable bodily injury or death to persons that occurs from a material or substance, including but not limited to asbestos or polychlorinated biphenyls (PCBs), on the site by the contractor, so the contractor If you recognize the condition, immediately stop the work in the affected area and inform the owner and architect of the condition. . . .