Compliance Status of Environmental Laws and Regulations (in Japan)

Compliance Status of Environmental Laws and Regulations

Targeting environmental conservation, we’ve set stringent voluntary management standards that exceed the requirements of laws and regulations. Our efforts include periodic measurements, maintenance of environmental conservation facilities, and trend management of measurement results to prevent environmental pollution. Using a compliance checklist to ensure compliance, we monitor the implementation and maintenance of legal and other requirements. Shown below are key environmental laws and regulations:

  • Act on Improvement of Pollution Prevention Systems in Specified Factories
  • Act on the Rationalization etc. of Energy Use
  • Act on Special Measures Concerning Procurement of Electricity from Renewable Energy Sources by Electricity Utilities
  • Air Pollution Control Act
  • Water Pollution Prevention Act
  • Sewerage Act
  • Noise Regulation Act
  • Act on Special Measures concerning Promotion of Proper Treatment of PCB Waste
  • Waste Management and Public Cleansing Act
  • Fire Service Act
  • Poisonous and Deleterious Substances Control Act
  • Act on Confirmation, etc. of Release Amounts of Specific Chemical Substances in the Environment and Promotion of Improvements to the Management Thereof (PRTR act)
  • Act on Rational Use and Appropriate Management of Fluorocarbons

In addition, we’re committed to soil and groundwater pollution control by adopting the method of piping in concrete gutters (with mesh lids) in place of burying pipes underground and by upgrading aging pipes in a planned manner to enhance risk management. We perform emergency drills once per year to validate the risk management system.

  • Visualizing buried pipes (installed in concrete gutter) (Katsuta Plant)

    Visualizing buried pipes (installed in concrete gutter) (Katsuta Plant)

    Emergency drill (Sawa Plant)

    Emergency drill (Sawa Plant)

Factory-specific Environmental Management Data

Environmental management data for air and water quality: In fiscal year 2019, none of the plants exceeded the limits set under laws and ordinances. Additionally, none of the plants exceeded the standard values set by each plant for voluntary management.

Koki Holdings Co.,Ltd. Katsuta Plant

Air (boiler)
Item Unit Legal standard Factory standard Maximum measured value
NOx ppm ≦ 180 ≦ 120 68
Dust g/m3 ≦ 0.3 ≦ 0.2 0.03
Water quality (public sewerage)
Item Unit Legal standard Factory standard Maximum measured value
Hydrogen ion concentration(pH) - 5~9 5.2~8.8 6.7~7.5
Biochemical oxygen demand (BOD) mg/L < 600 ≦ 200 2.2
Suspended solids (SS) mg/L < 600 ≦ 200 1
n-hexane extract
(mineral oil)
mg/L ≦ 5 ≦ 1.7 < 0.5
n-hexane extract
(animal and vegetable oils)
mg/L ≦ 30 ≦ 10 < 0.5
Noise
Category Unit Legal standard Factory standard Maximum measured value
Daytime dB ≦ 75 ≦ 75 57

Koki Holdings Co.,Ltd. Sawa Plant

Air (boiler)
Item Unit Legal standard Factory standard Maximum measured value
NOx ppm ≦ 180 ≦ 120 62
Dust g/m3 ≦ 0.3 ≦ 0.2 0.02
Water quality (public sewerage)
Item Unit Legal standard Factory standard Maximum measured value
Hydrogen ion concentration(pH) - 5~9 5.2~8.8 7.1~7.6
Biochemical oxygen demand (BOD) mg/L < 600 ≦ 480 288
Suspended solids (SS) mg/L < 600 ≦ 200 137
n-hexane extract
(mineral oil)
mg/L ≦ 5 ≦ 1.7 0.5
n-hexane extract
(animal and vegetable oils)
mg/L ≦ 30 ≦ 24 10.3
Noise
Category Unit Legal standard Factory standard Maximum measured value
Daytime dB ≦ 75 ≦ 75 55

Sankyo Diamond Industrial Co., Ltd. nabari Plant

Water quality (public sewerage)
Item Unit Legal standard Factory standard Maximum measured value
Hydrogen ion concentration(pH) - 5.8 ≦ 8.6 6.0~8.4 6.7~7.1
Biochemical oxygen demand (BOD) mg/L ≦ 160 ≦ 20 2
Suspended solids (SS) mg/L < 200 < 180 0.8
n-hexane extract
(mineral oil)
mg/L ≦ 5 ≦ 4.5 < 0.5
n-hexane extract
(animal and vegetable oils)
mg/L ≦ 30 ≦ 27 < 0.5
Noise
Category Unit Legal standard Factory standard Maximum measured value
Daytime dB ≦ 70 ≦ 70 61
Vibration
Category Unit Legal standard Factory standard Maximum measured value
Daytime dB ≦ 65 ≦ 65 47