Since the evaluated production revealed a total generation rate, more details about the waste classification and quantity were needed. As a result, the EPA began to work on the manifest system (relevant specifications of the manifest are described in Section 3.4 in this paper) in 1997. Since August 1998, medical units with 50 beds were requested to declare the amount of waste produced according to relevant specifications via the internet. They were joined by medical organizations licensed for 50 beds or greater, since July 2002 as well as hospitals, hemodialysis centers, and clinics with three medical departments or greater, since April 2005. Other small clinics were requested to declare their production of infectious industrial waste treatment in a six-copy manifest.
This study analyzed the classification and production of infectious industrial waste based on declarations in 2003–2005 obtained by the EPA Industrial Waste Control Center Reporting System, focusing on hospitals, hemodialysis centers, and clinics with three or more medical departments.
Total declared waste generated by the medical units was roughly 80,000–92,000 tons/yr. This waste could be classified into six different categories: C-05 (flammable) infectious industrial waste; C-06 (inflammable) infectious industrial waste; C, other hazardous industrial waste; D, general industrial waste; E, compound metal waste; and R, recyclable waste. Table 3 and Fig. 1 present summaries of data obtained by the EPA Industrial Waste Control Center Reporting System for 2003–2005.