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Komatsu's Environmental and Social Activities Enhancing Quality of Life


Environmental Risk Management  Promoting Legal Compliance, and Pollution Mitigation and Prevention

Komatsu Group companies periodically report and archive environmental measurement results, in accordance with applicable laws and regulations of national and local authorities. In FY2013, there was one instance of a minor violation of environmental laws and regulations (forgetting to submit a notification for a specific facility), but since then the notification has been submitted. However, Komatsu has had no major accidents that could result in pollution.

Addressing Soil and Groundwater Contamination

Komatsu has established guidelines for testing soil and groundwater at our Japan facilities, and we perform investigations according to applicable laws and regulations at business units that are to be sold, closed, or demolished. If contamination is found, the Company takes appropriate measures under the supervision of local authorities. We are performing voluntary investigations at currently operating business units to check for contamination from volatile organic compounds (VOC) from cleaning solvents that were used in the past.

Komatsu has been surveying soil and groundwater for VOC contamination at Group business units in Japan since 2005. Business unit sites at which contamination has been detected have implemented countermeasures. The Company has selected methods to clean up the sites as quickly as possible.

Work at the Oyama Plant was completed in FY2009. The clean up work at the other sites are continuing.

In FY2013, change in land character notifications were filed for the Awazu Plant, in accordance with the provision of Article 4, Amended Soil Contamination Countermeasures Act. However, no survey order was issued from administrative authorities in relation to these sites because there was no concern regarding possible contamination.

Going forward, along with driving the clean up activities, we will monitor the site boundaries to make sure that off-site outflow of groundwater does not exceed the standards.

Status of Soil and Groundwater Cleanup in Japan

Business unit Cleanup method Cleanup status
Awazu Plant Excavation and removal, soil vapor extraction, groundwater withdrawal and aeration, bioremediation In process
Komatsu Plant
(formerly)
Excavation and removal, groundwater withdrawal and aeration, bioremediation In process
Osaka Plant Soil vapor extraction, air sparging, groundwater withdrawal and aeration, bioremediation In process
Shonan Plant Excavation and removal, groundwater withdrawal and aeration In process
Tochigi Plant Excavation and removal, bioremediation In process
*Bio-remediation is purification process of hazardous materials through utilizing micro organisms and returning the soil to a non-hazardous state.
-Surveys revealed no contamination for the Koriyama Plant, Research Division in Hiratsuka, Techno Center in Izu and Field Testing Department in Oita.

Managing PCB (Polychlorinated Biphenyl) Waste

Komatsu stores and manages PCB-containing waste, such as transformers, in accordance with Japan's "Law Concerning Special Measures Against PCB Waste" and the "Waste Disposal and Public Cleansing Law." In FY2008, Komatsu entrusted PCB disposal to the Japan Environmental Safety Corporation (JESCO). A total of 335 PCB-containing capacitors were disposed of by FY2012. In FY2013, JESCO disposed of an additional 225 capacitors.

Additionally, with the start of treatment of stabilizers at JESCO, 2868 units of fluorescent lamp and mercury lamp stabilizers were treated ahead of schedule in Hokkaido Office.

Continuing through 2014, we plan to carry out further disposal work to locate low-concentration PCB waste as well.

Number of PCB-containing Transformers and Capacitors in Storage

Company Site Capacitors, etc. Stabilizers
Number of disposal in FY2013 Number of awaiting disposal Number of disposal in FY2013 Number of awaiting disposal
Komatsu Ltd. Head office 0 0 0 35
Awazu Plant 39 18 1,164 62
Osaka Plant 0 0 0 119
Oyama Plant 180 72 1,641 0
Shonan Plant 0 2 0 0
Tochigi Plant 0 5 63 0
Field Testing Department 0 0 0 4
Construction & Mining Equipment Marketing Division 0 0 0 131
Subtotal of Komatsu 219 97 2,868 351
Komatsu NTC Ltd. 0 2 0 0
Komatsu Cabtec Co., Ltd. 0 2 0 0
Komatsu House Ltd. 0 1 0 0
Komatsu Construction Equipment Sales and Service Japan Ltd. 6 12 0 490
Total of Komatsu group 11 17 0 490
Total 225 114 2,868 841
-The share from the former Komatsu Plant was transferred to the Awazu Plant. The share from the former Mooka Plant was transferred to the Oyama Plant.