Situation When  an  older  wing  of  a  Massachuse3s  public  school  was  slated  for  renova8on,  tes8ng  for  the  presence  of   hazardous  compounds  in  building  materials  was  conducted  by  a  local  area  consultant.  As  the  wing  of  school  had   been  constructed  during  a  8me  in  which  polychlorinated  biphenyls  (PCBs)  were  widely

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