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Komatsu's Environmental and Social Activities Data

Site Data (Japan)  Awazu Plant


Year of Establishment 1921
Location Komatsu, Ishikawa Prefecture
Main Products Small and medium-sized bulldozers, small hydraulic excavators, small and medium-sized wheel loaders, motor graders, armored vehicles, etc.
Site/Green Landscape (1,000 m2) 700/85
Number of employees 3,212
Date of ISO14001 certification acquisition September 1997
* The number of employees includes those working for Komatsu affiliates on the premises.
* The number of employees as of the end of March 2015.

Major Performance

Environmental impact Energy consumption
Item Actual value Item Actual consumption Converted to calorie equivalents (GJ)
Total CO2 emissions 33,852 t-CO2 Electricity 53,110 MWh 515,665
NOx total amount 34,675 kg Heavy oil A 3,092 kl 120,908
SOx total amount 3,722 kg Kerosene 9 kl 339
Total emissions of waste 1,545 t Light oil 326 kl 12,460
Amount recycled 1,544 t Town gas 0 Nkm3 0
Recycling rate 100 % LPG 1,365 t 68,542
BOD emissions 1,182 kg Other   1,557
COD emissions 2,267 kg Total   719,470
Wastewater 619,394 m3
Output of in-house power generation 8,594 MWh
Water consumption
Item Actual value
Groundwater 481,485 m3
Industrial water 0 m3
Supply water 78,850 m3
Total 560,335 m3
* Refer to the Data on Environmental Impact Resulting from Business Activities for details on the methods used to calculate amounts.
* Total emissions of waste are expressed as a composite of the amount recycled (excluding valuables) and the amount disposed.
* Recycling rate is calculated by dividing the amount recycled (including valuables) by the amount generated (including valuables).
* Total emissions of BOD and COD are calculated by multiplying the average concentration by the amount of wastewater.

* The heat energy conversion factor is calculated in keeping with Greenhouse Gas Emission Calculation - Reporting Manual, which is based on the act on Promotion of Global Warming Countermeasures.

Compliance Conditions to Major Regulations

Item Unit Facility Regulated value Actual value
Nitrogen oxides (NOx) ppm Boiler 180 100
  ppm Diesel engine 950 810
Sulfur oxides (SOx) - K-value regulation 17.5 2.39
Soot and dust g/m3N Boiler 0.3 0.017
  g/m3N Diesel engine 0.1 0.015
* Regulated values are in accordance with the Air Pollution Control Law and local regulations.
Item Regulated value according to the Water Pollution Control Law Regulated value Actual value
Maximum Minimum Average
pH 5.8-8.6 5.8-8.6 7.5 6.6 7.1
BOD (Biochemical oxygen demand) 160 mg/l 80 2.2 ND 1.3
COD (Chemical Oxygen Demand) 160 mg/l 80 9.0 1.3 2.8
Suspended solids (SS) 200 mg/l 120 7.0 ND 2.4
Mineral oils 5 mg/l 5 ND ND ND
Copper 3 mg/l 3 ND ND ND
Zinc 2 mg/l 2 0.09 ND 0.07
Nitrogen 120 mg/l 120 3.9 3 3.5
Phosphorus 16 mg/l 16 0.37 0.02 0.16
Cadmium 0.03 mg/l 0.03
Lead 0.1 mg/l 0.1 ND ND ND
Chromium (VI) 0.5 mg/l 0.5 ND ND ND
Trichloroethylene 0.3 mg/l 0.3 ND ND ND
Tetrachloroethylene 0.1 mg/l 0.1 ND ND ND
Dichloromethane 0.2 mg/l 0.2 ND ND ND
1,1,1-trichloroethane 3 mg/l 3 ND ND ND
* Regulated values are in accordance with the Water Pollution Control Law and local regulations.
* ND ("not detected") indicates a value below the lower limit of detection.
* ND is considered to be the lower limit of detection when calculating the average.
* Other items are confirmed to be below the regulated value.
* Data for the Awazu Plant include data for the Komatsu NTC Ltd (KM Division).