News Releases
November. 15, 2013
Implementation of Countermeasures at Mobara Plant
TOKYO, November 15, 2013-Japan Display Inc. (JDI) has completed a voluntary investigation of the soil and groundwater at its Mobara Plant in Mobara City, Chiba Prefecture, pursuant to Japan's Soil Contamination Countermeasures Act, as part of its plan to demolish certain unused buildings with low earthquake resistance on the site. The results of the investigation, including planned countermeasures, have been reported to Chiba Prefecture. While some areas of concern were found, as summarized below, based on the investigation JDI believes that soil and groundwater contamination has been appropriately contained and that proper environmental measures are being taken. JDI will continue to cooperate with Chiba Prefecture to take any additional necessary countermeasures.
Investigation Results (brief overview)
1. Volatile organic compounds comply with the standards at all spots investigated.
2. Heavy metal measurements that exceeded contamination limits and maximum concentration levels are as follows:
| Limit-exceeded material | Soil | Groundwater(mg/L) | ||||
|---|---|---|---|---|---|---|
| Elution amount (mg/L) | Contained amount (mg/kg) | |||||
| Max. c | Criterion | Max. c | Criterion | Max. c | Criterion | |
| Cadmium and its compounds | 0.033 | 0.01 or less | 200 | 150 or less | NE | 0.01 or less |
| Hexavalent chromium compounds | 0.064 | 0.05 or less | NE | 250 or less | NE | 0.05 or less |
| Total mercury and its compounds | 0.17 | 0.0005 or less | 230 | 15 or less | NE | 0.0005 or less |
| Lead and its compounds | 1.8 | 0.01 or less | 8500 | 150 or less | NE | 0.01 or less |
| Arsenic and its compounds | 0.16 | 0.01 or less | 490 | 150 or less | 0.011 | 0.01 or less |
| Fluorine and its compounds | 39 | 0.8 or less | 46000 | 4,000 or less | 30 | 0.8 or less |
| Boron and its compounds | 2 | 1 or less | NE | 4,000 or less | NE | 1 or less |
*NE: Not exceeding limits
Voluntary Countermeasures
- Construction period: December 2013 to December 2015 (scheduled).
- Description of work: Excavation and disposal of soil that exceeds contamination limits, or implement containment measures (impermeable wall, paving), etc. on the Plant premises.
- Continuation of groundwater pumping at boundary of the site to avoid the spreading of contaminated groundwater off of the premises.
General outline of Mobara Plant
- Established: 1943
- Location: 3300 Hayano, Mobara-shi, Chiba Prefecture, Japan
- Site area: Approximately 369,000m2
About JDI
Japan Display Inc. is one of the world's leading providers of small- and medium-sized display panels. JDI was formed in March 30, 2012 by display manufacturing subsidiaries of Sony, Hitachi and Toshiba. Current shareholding of the company is approximately 70% by Industrial Network Corporation of Japan and approximately 10% each by the former parents of the subsidiaries. The company provides advanced displays, such as displays with high-definition, low-power-consumption and a thin structure, for use in smartphones, tablet PCs, automotive devices, digital cameras, medical equipment and other electronic devices.
The information contained in this press release is accurate as of the date of issuance and is subject to change without notice. Information in this press release, other than statements of historical fact, constitutes forward-looking statements, which are based on available information, operating plans and projections about future events and trends. Forward-looking statements inherently involve risks and uncertainties that could cause actual results to differ materially from those predicted in such forward-looking statements.
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