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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) 700/90
Number of employees 3,179
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 2013.

Major Performance

Environmental impact Energy consumption
Item Actual value Item Actual consumption Converted to calorie equivalents (GJ)
Total CO2 emissions 34,519 t-CO2 Electricity 58,244 MWh 566,196
NOx total amount 13,920 kg Heavy oil A 2,684 kl 104,928
SOx total amount 3,661 kg Kerosene 10 kl 353
Total emissions of waste 1,741 t Light oil 291 kl 11,110
Amount recycled 1,740 t Town gas 0 Nkm3  
Recycling rate 100 % LPG 1,333 t 66,919
BOD emissions 2,132 kg Other   1,427
COD emissions 2,207 kg Total   750,933
Wastewater 739,394 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 85
  ppm Diesel engine 950 700
Sulfur oxides (SOx) - K-value regulation 17.5 3.03
Soot and dust g/m3N Boiler 0.3 0.015
  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 7.2 6.4 6.7
BOD (Biochemical oxygen demand) 160 mg/l 80 3.2 ND 2.0
COD (Chemical Oxygen Demand) 160 mg/l 80 5.7 0.6 2.4
Suspended solids (SS) 200 mg/l 120 2.8 ND 1.3
Mineral oils 5 mg/l 5 ND ND ND
Copper 3 mg/l 3 ND ND ND
Zinc 2 mg/l 2 0.16 ND 0.08
Nitrogen 120 mg/l 120 4.5 3.7 4.2
Phosphorus 16 mg/l 16 0.36 0.04 0.19
Cadmium 0.1 mg/l 0.1 ND ND ND
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).