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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 FY2015, there was a minor infraction regarding the environment (temporarily exceeding the standard for water quality and failure to report certain facilities), but it has been resolved and currently there are no compliance breaches. No major accidents or legal violations occurred that would threaten environmental contamination.

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.

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, Technology Innovation Center 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 599 PCB-containing capacitors were disposed of by FY2015. As of the end of FY2015, 72 capacitors are awaiting disposal.

Continuing through 2016, 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 FY2015 Number of awaiting disposal Number of disposal in FY2015 Number of awaiting disposal
Komatsu Ltd. Head office 0 4 0 30
Awazu Plant 0 18 0 64
Osaka Plant 0 0 0 93
Oyama Plant 28 37 0 0
Shonan Plant 0 2 0 0
Tochigi Plant 0 5 0 0
Field Testing Department 0 0 0 4
Construction & Mining Equipment Marketing Division 0 0 0 131
Subtotal of Komatsu 28 66 0 322
Komatsu NTC Ltd. 0 2 0 0
Komatsu Cabtec Co., Ltd. 2 0 0 0
Komatsu Construction Equipment Sales and Service Japan Ltd. 0 4 0 448
Total of Komatsu group 2 6 0 448
Total 30 72 0 770
-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.