The volume of BOD emission was 4.5tons in FY2005, a 25 % decrease compared to FY2004.
Each facility has set voluntary standards for harmful substances (such as Hexavalent chromium compounds and lead), and living environment items such as BOD (biochemical oxygen demand), that are more stringent than required by regulations for discharged water from manufacturing processes. Discharge to public water areas or sewage was carried out after appropriate treatment, and upon clearance of these voluntary standards.
In FY2004, at the Tatsuno Facility, the BOD concentration of the discharge to public water areas was decreased due to increased sewage treatment tank capacity.

Change in Emissions of BOD

* The scope of the data is as same as the main scope of the Olympus CSR Report 2006