Figure 2-48 Changes in the number of cases and volume of improperly treated industrial waste

Note 1: Regarding the number of cases and volume of improper treatment shown above, from among improperly treated industrial waste identified by prefectures and ordinance-designated cities, cases where the volume of improper treatment per case was 10 tons or more were totalized (however, cases including specially controlled industrial waste were all counted individually).

Note 2: As shown in the above graph, the numbers of cases reported were 4, 22, 5 and 51 in fiscal year 2004, 2006, 2007 and 2008 respectively, but were discovered by the municipalities before those reported fiscal years. The volume of improperly treated industrial waste in fiscal 2007 includes 714,000 tons in a large-scale case, i.e., the case of Ritto City, Shiga Prefecture. The volume of improperly treated industrial waste in fiscal 2008 includes large-scale cases, i.e., 857,000 tons in the case of Uda City, Nara Prefecture, 22,000 tons in the case of Nagano City, Nagano Prefecture and 12,000 tons in the case of Tsukubamirai City, Ibaraki Prefecture.

Note 3: Sulfate pitch cases and ferrosilt cases were excluded from the survey. Ferrosilt was used as refill materials, and its sales and use started in August 2001. Approx. 720,000 tons were sold and used, but later this was identified as illegal dumping cases. The illegal dumping was confirmed at 45 sites in four prefectures, and removal of ferrosilt had been completed at 39 sites (as of the end of September 2009).

Source: Ministry of the Environment

9.8% (20,000 tons) by unlicensed ones and 8.8% (18,000 tons) by unknown ones (Figure 2-51). Regarding the cases of improper treatment, waste-discharging enterprises account for about 59.4% (183 cases) of all the improper treatment cases. About 15.9% (49 cases) were improperly treated by multiple-business operators, about 12.0% (37 cases) by licensed ones and about 5.2% (16 cases) by unknown ones. As for the amount of improperly treated wastes, licensed operators account for 89.4% (1.098 million tons) of all the cases. 5.6% (68,000 tons) were improperly treated by waste-discharging enterprises, 3.6% (44,000 tons) by multiple-business ones and 0.8% (10,000 tons) by unknown ones (Figure 2-52).

## (d) State of Removing Problems

Among illegal dumping cases newly reported in 2008 (308 cases, 203,000 tons), measures concerning removal of problems are to be carried out for five cases reported that problems have happened. Of them, the measures concerning removal of problems have been completed for four cases within the fiscal year, and the same measure has been taken for remaining one case. Concerning 15 cases reported that problems may happen, preventive measures against problems are to be carried out for 12 cases and on-the-spot inspections are to be implemented for three cases to confirm the situations in the future. Of 12 cases in which preventive measures against problems are to be carried out, the preventive measures have been completed for eight cases within the fiscal year. Regarding six cases reported as under survey on problems, the survey to clarify the situations of problems, etc. is carried out or will be carried out in the next fiscal year (Table 2-6).

Among improper treatment cases newly reported in 2008, there was no case reported that problems have happened. As for 16 cases reported that problems may happen, preventive measures against problems are to be carried out for 12 cases and on-the-spot inspections are to be implemented for four cases to confirm the situations in the future. Of 12 cases in which preventive measures against problems are to be carried out, the preventive measures have been completed for seven cases within the fiscal year. Concerning six cases reported as under survey on problems, the survey to clarify the situations of problems, etc. is carried out or will be carried out in the next fiscal year (Table 2-7).