DISCOVERY OF HAZARDOUS MATERIALS If, during the performance of the Work, Contractor or Contractor’s subcontractor(s) encounter material believed to be asbestos, polychlorinated biphenyl (PCB), or any other identified or non-identified potentially hazardous material (which has not been rendered harmless and labeled as such), Contractor and Contractor’s subcontractor(s) shall immediately stop work in the area affected and report the condition, in writing, to District. The Work in the affected area shall not continue or be resumed except by written direction of District and by agreement by Contractor.
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.
