Text Sizesmallmediumlarge Japanese

Komatsu's Environmental and Social Activities Data

Site Data (Japan)  Awazu Plant


Year of Establishment 1938
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 2,926
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 2016.

Major Performance

Environmental impact Energy consumption
Item Actual value Item Actual consumption Converted to calorie equivalents (GJ)
Total CO2 emissions 30,838 t-CO2 Electricity 39,289 MWh 381,996
NOx total amount 75,907 kg Heavy oil A 4,029 kl 157,543
SOx total amount 4,804 kg Kerosene 12 kl 430
Total emissions of waste 1,380 t Light oil 413 kl 15,760
Amount recycled 1,379 t Town gas 0 Nkm3 0
Recycling rate 99.9 % LPG 1,208 t 60,647
BOD emissions 1,055 kg Other   1,454
COD emissions 1,804 kg Total   617,830
Wastewater 599,417 m3
Output of in-house power generation 14,590 MWh
Water consumption
Item Actual value
Groundwater 404,300 m3
Industrial water 0 m3
Supply water 81,549 m3
Total 485,849 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 950 760
Sulfur oxides (SOx) - K-value regulation 17.5 2.53
Soot and dust g/m3N Boiler 0.3 0.054
  g/m3N Diesel engine 0.1 0.034
* 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 2.3 ND 1.3
COD (Chemical Oxygen Demand) 160 mg/l 80 5.1 ND 2.5
Suspended solids (SS) 200 mg/l 120 3.0 ND 1.5
Mineral oils 5 mg/l 5 ND ND ND
Copper 3 mg/l 3 ND ND ND
Zinc 2 mg/l 2 0.17 ND 0.09
Nitrogen 120 mg/l 120 3.9 1.6 3.0
Phosphorus 16 mg/l 16 0.31 0.01 0.13
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 0.1 mg/l 0.1 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, Sewerage 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.