Site Data (2019 results)

2019 data on the acquisition status of ISO 14001 certification for the SUMCO Group's business sites/plants and regulated substances discharged from each site/plant to the surrounding air and water.

Kyushu Factory (Nagahama)/Kyushu Factory (Kubara)/Kyushu Factory (Saga)

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Name of business site/plant Kyushu Factory (Nagahama) Kyushu Factory (Kubara) Kyushu Factory (Saga)
Scope of business Design, development and manufacture of silicon wafers Design, development and manufacture of monocrystalline silicon ingots and silicon wafers Design, development and manufacture of monocrystalline silicon ingots and silicon wafers
Status of acquisition of ISO 14001:2015 certification Examining organization Japan Quality Assurance Organization Japan Quality Assurance Organization Japan Quality Assurance Organization
Date of acquisition January 11, 1999 January 11, 1999 January 11, 1999
Date of renewal January 11, 2023 January 11, 2023 January 11, 2023
Air Measurement results (regulation value)
Nitrogen oxides (NOx) ppm Boiler 85 (150) Boiler 49 (150) Boiler 72 (110)
Sulfur oxides (SOx) m3N/h Boiler ND (0.44-0.85) Boiler ND (1.15) /
Soot and dust g/m3N / / Boiler ND (0.001)
Water Regulation value Measure-
ment result
Regulation value Measure-
ment result
Regulation value Measure-
ment result
Biological oxygen demand (BOD*1) mg/ℓ / / / / 10 7
Chemical oxygen demand (COD*2) mg/ℓ 30 13 30 8 / /
Suspended solids (SS) mg/ℓ 30 12 30 8 25 5
N-hexane extract mg/ℓ 5 ND 5 ND 3 ND
Iodine consumption mg/ℓ / / / / / /
Fluorine and its compounds mg/ℓ 8 5.1 8 2.7 3 0.9
Ammoniac nitrogen mg/ℓ 80 18 80 24 100 12
Nitrate nitrogen mg/ℓ
Nitrite-nitrogen mg/ℓ
Nitrogen content (T-N) mg/ℓ 120 39 120 30 60 15
Chromium content (T-Cr) mg/ℓ 0.2 ND 0.2 ND 0.2 ND
Phosphorus content (T-P) mg/ℓ 12 0.3 12 0.1 8 1.0
Arsenic mg/ℓ 0.05 ND 0.05 ND 0.1 ND
Trichloroe-
thylene
mg/ℓ 0.1 ND 0.1 ND 0.1 ND
  • *1In case of discharging treated wastewater into the river, the drainage restriction of biological oxygen demand (BOD) applies.
  • *2In case of discharging treated wastewater into the sea, the drainage restriction of chemical oxygen demand (COD) applies.
  • *  Numbers list the maximum annual figures.
    "/" denotes non-applicability
    "-" denotes an unmeasured item as the regulated substance is not used.
    "ND" denotes non-detection

Noda Office/Yonezawa Plant

Name of business site/plant Noda Office Yonezawa Plant
Scope of business Manufacture of silicon wafers Design, development and manufacture of monocrystalline silicon ingots
Status of acquisition of ISO 14001:2015 certification Examining organization Japan Quality Assurance Organization Japan Quality Assurance Organization
Date of acquisition January 11, 1999 January 11, 1999
Date of renewal January 11, 2023 January 11, 2023
Air Measurement results (regulation value)
Nitrogen oxides (NOx) ppm Boiler 73 (260) /
Sulfur oxides (SOx) m3N/h Boiler 0.03 (0.32) /
Soot and dust g/m3N Boiler 0.0 (0.3) /
Water Regulation value Measurement result Regulation value Measurement result
Biological oxygen demand (BOD) mg/ℓ 25 15 600 21
Chemical oxygen demand (COD) mg/ℓ 20*1 17 / /
Suspended solids (SS) mg/ℓ 50 10 600 31
N-hexane extract mg/ℓ 3 ND 5 ND
Iodine consumption mg/ℓ / / 220 8
Fluorine and its compounds mg/ℓ 8 4.4 8*2 2.4
Ammoniac nitrogen mg/ℓ 100 9 380 192
Nitrate nitrogen mg/ℓ
Nitrite-nitrogen mg/ℓ
Nitrogen content (T-N) mg/ℓ 30 22 / /
Chromium content (T-Cr) mg/ℓ 1 ND 0.5 ND
Phosphorus content (T-P) mg/ℓ 2 0.2 / /
Arsenic mg/ℓ 0.05 ND 0.1 ND
Trichloroethylene mg/ℓ 0.1 ND / /
  • *1At the Noda office, since Tokyo Bay pollutant load restrictions apply, it is also subject to chemical oxygen demand (COD) restrictions.
  • *2At the Yonezawa Plant, treated wastewater is discharged into public sewerage systems and is thus subject to the Sewerage Act. (Destination of treated waste water outflowing from sewerage treatment site: river) Accordingly, the regulation value for fluoridation compound is 8 mg/ℓ.

Chitose Plant/JSQ Division

Name of business site/plant Chitose Plant JSQ Division
Scope of business Design, development and manufacture of silicon wafers Design, development and manufacture of quartz crucibles
Status of acquisition of ISO 14001:2015 certification Examining organization Japan Quality Assurance Organization Japan Quality Assurance Organization
Date of acquisition January 11, 1999 January 11, 1999
Date of renewal January 11, 2023 January 11, 2023
Air Measurement results (regulation value)
Nitrogen oxides (NOx) ppm / /
Sulfur oxides (SOx) m3N/h / /
Soot and dust g/m3N / Firing furnace 0.17 (0.2)
Water Regulation value Measurement result Regulation value Measurement result
Biological oxygen demand (BOD) mg/ℓ 600 2 160 18
Chemical oxygen demand (COD) mg/ℓ / / / /
Suspended solids (SS) mg/ℓ 600 18 200 33
N-hexane extract mg/ℓ 5 1 5 ND
Iodine consumption mg/ℓ / / / /
Fluorine and its compounds mg/ℓ 8* 3.7 8 0.3
Ammoniac nitrogen mg/ℓ / / 100 3
Nitrate nitrogen mg/ℓ
Nitrite-nitrogen mg/ℓ
Nitrogen content (T-N) mg/ℓ / / 120 5
Chromium content (T-Cr) mg/ℓ 2 ND 2 ND
Phosphorus content (T-P) mg/ℓ / / 16 0.2
Arsenic mg/ℓ / / 0.1 ND
Trichloroethylene mg/ℓ / / 0.1 ND
  • *At the Chitose Plant, treated wastewater is discharged into public sewerage systems and is thus subject to the Sewerage Act. (Destination of treated wastewater out flowing from sewerage treatment site: river) Accordingly, the regulation value for fluoridation compound is 8 mg/ℓ.

SUMCO TECHXIV Corporation Nagasaki Plant/SUMCO TECHXIV Corporation Miyazaki Plant

Name of business site/plant SUMCO TECHXIV Corporation (STC) Nagasaki Plant SUMCO TECHXIV Corporation (STC) Miyazaki Plant
Scope of business Design, development and manufacture of monocrystalline silicon ingots and silicon wafers Design, development and manufacture of monocrystalline silicon ingots and silicon wafers
Status of acquisition of ISO 14001:2015 certification Examining organization Japan Quality Assurance Organization Japan Quality Assurance Organization
Date of acquisition January 11, 1999 January 11, 1999
Date of renewal January 11, 2023 January 11, 2023
Air Measurement results (regulation value)
Nitrogen oxides (NOx) ppm Boiler 69 (260) Boiler 81 (150)
Sulfur oxides (SOx) m3N/h Boiler ND (1.43-2.41) /
Soot and dust g/m3N Boiler ND (0.3) Boiler ND (0.1)*2
Water Regulation value Measurement result Regulation value Measurement result
Biological oxygen demand (BOD) mg/ℓ 600 60 25 4
Chemical oxygen demand (COD) mg/ℓ / / / /
Suspended solids (SS) mg/ℓ 600 32 30 3
N-hexane extract mg/ℓ 5 ND 5 ND
Iodine consumption mg/ℓ / / / /
Fluorine and its compounds mg/ℓ 15*1 8.0 8 1.7
Ammoniac nitrogen mg/ℓ 380 35 100 11
Nitrate nitrogen mg/ℓ
Nitrite-nitrogen mg/ℓ
Nitrogen content (T-N) mg/ℓ 240 79 120 5
Chromium content (T-Cr) mg/ℓ 2 ND 0.2 ND
Phosphorus content (T-P) mg/ℓ 32 0.3 16 0.0
Arsenic mg/ℓ 0.1 0.002 / /
Trichloroethylene mg/ℓ 0.1 ND / /
  • *1At STC Nagasaki plant, treated wastewater is discharged into public sewerage systems and is thus subject to the Sewerage Act. (Destination of treated wastewater outflowing from sewerage treatment site: the sea) Accordingly, the regulation value for fluoridation compound is 15 mg/ℓ.
  • *2The frequency of atmospheric soot and dust measurements at STC Miyazaki was revised to once every five years (the next measurement will be taken in 2023).

SUMCO Phoenix Corporation Albuquerque Plant/SUMCO Phoenix Corporation Phoenix Plant

Name of business site/plant SUMCO Phoenix Corporation (SPX) Albuquerque Plant SUMCO Phoenix Corporation (SPX) Phoenix Plant
Scope of business Design, development and manufacture of silicon wafers Design, development and manufacture of monocrystalline silicon ingots and silicon wafers
Status of acquisition of ISO 14001:2015 certification Examining organization DNV DNV
Date of acquisition June 19, 2000 June 19, 2000
Date of renewal June 30, 2021 June 30, 2021
Air Measurement results (regulation value)
Nitrogen oxides (NOx) ton/y 1.3 (10.2) 12.2 (24.6)
Sulfur oxides (SOx) ton/y 0.01 (0.34) 0.19 (1.25)
PM10 (Particulate Matter) ton/y 0.09 (0.84) 0.7 (2.5)
Water Regulation value Measurement result* Regulation value Measurement result
Biological oxygen demand (BOD) mg/ℓ / / / /
Chemical oxygen demand (COD) mg/ℓ / / / /
Arsenic mg/ℓ 2.09 / 0.13 0.01
Cadmium mg/ℓ / / 0.047 0.002
Copper mg/ℓ / / 1.5 0.0
Cyanide mg/ℓ 0.5 / 2 0.0
Fluorine and its compounds mg/ℓ 36 / / /
Lead mg/ℓ 1.0 / 0.41 0.01
Mercury mg/ℓ 0.004 / 0.0023 0.0002
Molybdenum mg/ℓ 2.0 / / /
Selenium mg/ℓ 0.46 / 0.1 0.01
Silver mg/ℓ 5.0 / 1.2 0.0
Zinc mg/ℓ 2.2 / 3.5 0.1
Suspended solids (SS) mg/ℓ / / / /
  • *At the Albuquerque Plant, only pH and water flow rate measurements are required, and the City of Albuquerque periodically takes wastewater measurements.