The dioxin standard is cleared at almost all facilities 1998.10.15

In December 1998, almost all facilities in the country were cleared of dioxin concentration standards (80 nanograms per cubic mail) in the exhaust gases applied to existing waste incineration plants. In 1996, the Ministry of Health and Welfare instructed each municipality to target the 1641 facilities nationwide, and as a result, it exceeded the reference value at 107 facilities as of October 1997. Thereafter, each municipality advanced the improvement of the furnace, and 1635 facilities except the six facilities of the measurement was newly measured, and the reference value is cleared.