in late june, the district announced that the results of the much anticipated investigation would be delayed three weeks. the teachers sent a formal request to the district to get the raw data from the environmental samples to conduct their own investigation. although ties were found between ingesting certain types of common mold aspergillus and cancer, dr. peter orris, a medical director the district hired for the investigation, denied that mold at the school had any link to cancer in a letter sent to teachers. however, teachers and parents were still concerned that orris was basing his conclusions in part on a british medical journal published in 1976. in late august 1994, it was found by the investigation that there were no cancer-causing agents in plum grove, but the air quality of the building was very poor.