Environmental Data
Soil and Groundwater
Surveys and Measures Taken on Soil and Groundwater Contamination
Efforts regarding soil and groundwater contamination
Konica Minolta is striving to manage the state of contamination through regular monitoring, to facilitate cleanup, and to prevent the spread of contamination.
It conducts robust management through periodic observation at sites where soil or ground water contamination has been identified to ensure that the contaminants do not affect the surrounding environment.
The Group has organized a special team to manage remediation of polluted sites and to prevent the spread of contamination. Detailed surveys conducted under the team's supervision serve as the basis for developing countermeasures and examining suitable purification technologies.
The Group reports the results of its observations and remediation efforts periodically to local government agencies and to concerned neighboring residents.
| Operation Site | Substances | Progress in Fiscal 2015 |
|---|---|---|
| Tokyo Site Hino (Hino, Tokyo) |
Fluorine, Boron, Mercury, Benzene,Lead | The company makes periodic observations at monitoring wells located at the site boundary. It has been confirmed that specified hazardous substances with a history of use are all below the limit of environmental standard values, and have no impact on the surrounding environment. The survey conducted before dismantlement work found lead in excess of the standard value in soil. Measures for prevention of dispersion were completed, and there has been no impact on the surrounding environment. The company is conducting cleanup through gas aspiration in the area where benzene had been found in excess of the standard value for the part that could not be remediated through excavation. There has been no effect on groundwater. |
| Tokyo Site Hachioji (Hachioji, Tokyo) |
Hexavalent chromium | The company continues with measures for remediation and prevention of dispersion by pumping ground water taken from wells located within the site. Through continued periodic observation of ground water, the company has confirmed that there is no runoff from the site. |
| Kofu Site (Chuo, Yamanashi Prefecture) |
Fluorine | The company has been continuing with periodic monitoring of the site boundary and has found no fluorine exceeding the standard value in groundwater. |
| Mikawa Site, Western Zone (Toyokawa, Aichi Prefecture) |
TCE*1, Fluorine | The company concluded a water pumping measure in fiscal 2013 and has continued to make periodic observations since then. The concentration has remained below the limit of standard values. Through continued periodic observation of ground water, the company has confirmed that there is no runoff of fluorine from the site. |
| Itami Site (Itami, Hyogo Prefecture) |
Lead, Arsenic, Cadmium, Fluorine, Boron | Regarding the boron exceeding the standard value in the ground water found in a specific area of the site, the company continues with remediation and prevention of dispersion of the contaminant through pumping, and has confirmed that there is no runoff from the site. Regarding lead, arsenic, cadmium, and fluorine, the company has performed observation of ground water to confirm that there is no runoff of these substances from the site. |
| Sakai Site (Sakai, Osaka) |
TCE, PCE*2, c-DCE*3, Lead, Arsenic, Cadmium | Regarding TCE, PCE, and c-DCE, the company continues with remediation prevention of dispersion by pumping ground water and carries out preventing runoff from the site. Regarding lead, arsenic, and cadmium, the company performed periodic observation of the ground water. It confirmed that the concentrations are below the limit of environmental standard values in all the monitoring wells located at the site boundary, and have no impact on the surrounding environment. |
| Osaka Sayama Site (Osaka Sayama, Osaka) |
TCE, PCE, c-DCE | After the cleanup work conducted in the area around the company’s effluent treatment facility, which was implemented in fiscal 2012, the company has continued to purify and prevent the spread of contamination through water pumping. |
| Site of the former Nankai Optical Co., Ltd. (Kainan, Wakayama Prefecture) |
TCE, PCE, c-DCE | In fiscal 2015, the company conducted cleanup work on the premises. It is continuing to monitor groundwater at the site boundary. |
| Ueda Office, Toyohashi Precision Products Co., Ltd. (Current Konica Minolta Mechatronics Co., Ltd., Toyohashi, Aichi Prefecture) |
TCE, c-DCE, Hexavalent Chromium | The company confirmed through periodic monitoring that there is no runoff outside the site of the relevant substances. It is continuing with remediation of groundwater through pumping on the site, and has kept the levels of the relevant substances in recovered groundwater within the standard values even before treatment. |
| Konica Minolta Opto Products Co., Ltd. (Fuefuki, Yamanashi Prefecture) |
TCE, PCE, c-DCE | The company has implemented remediation of ground water through pumping, permeable reactive barriers, and bio-barriers, and continued periodic observation to confirm that there is no runoff of the relevant substances from the site. |
| Konica Minolta Supplies Manufacturing Co., Ltd. (Kofu, Yamanashi Prefecture) |
TCE, PCE, c-DCE | After the bioremediation work conducted in fiscal 2014, the company has been making periodic observations of the groundwater at monitoring wells located downstream and is verifying the effects. |
- *1
- TCE: trichloroethylene
- *2
- PCE: tetrachloroethylene (perchloroethylene)
- *3
- c-DCE: cis-1,2-dichloroethylene (resolvent of TCE and PCE)