FYE March 2024 Environmental Performance Data for Plants and Offices
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- Atmosphere (Air Pollution Control Act, Prefectural Regulations)
- Water Quality (Water Pollution Prevention Act, Sewerage Act, Prefectural/Municipal Regulations)
- Noise (Noise Regulation Act, Prefectural Regulations, Agreements)
- Vibration (Vibration Regulation Act, Prefectural Regulations, Agreements)
- Odor (Offensive Odor Control Act)
- Chemical Substances Subject to Japan’s Pollutant Release and Transfer Register (PRTR) System: Amount Handled and Emissions
In addition to complying with the laws and regulations, SUBARU sets voluntary standards that are 20% stricter than the legal regulation values to manage the controlled substances.
The following shows the regulation values and measured performance data for our plants and offices regarding the main substances.
Atmosphere (Air Pollution Control Act, Prefectural Regulations)
Automotive Business
Gunma Plant
Main Plant
| Substance | Equipment / Facility | Unit | Regulation | Voluntary Standard | Maximum | Average |
|---|---|---|---|---|---|---|
| NOx | Paint drying oven | ppm | 230 | 184 | 60 | 45 |
| Particulate matter | g/Nm3 | 0.2 | 0.16 | 0.004 | 0.003 | |
| VOC | Paint booth, etc. | ppm-C | 700 | - | 645 | 117 |
Yajima Plant
| Substance | Equipment / Facility | Unit | Regulation | Voluntary Standard | Maximum | Average |
|---|---|---|---|---|---|---|
| NOx | Paint drying oven | ppm | 230 | 184 | 63 | 44 |
| Particulate matter | g/Nm3 | 0.2 | 0.16 | 0.004 | 0.003 | |
| VOC | Paint booth, etc. | ppm-C | 700 | - | 422 | 60 |
| VOC | ppm-C | 400 | - | 393 | 96 |
Oizumi Plant
| Substance | Equipment / Facility | Unit | Regulation | Voluntary Standard | Maximum | Average |
|---|---|---|---|---|---|---|
| NOx | Aluminum melting furnace | ppm | 180 | 144 | 104 | 52 |
| Particulate matter | g/Nm3 | 0.3 | 0.24 | 0.036 | 0.007 |
Tokyo Office
No applicable equipment / facility
Aerospace Company
Utsunomiya Plant
Main Plant
| Substance | Equipment / Facility | Unit | Regulation | Voluntary Standard | Maximum | Average |
|---|---|---|---|---|---|---|
| NOx | Cogeneration | ppm | 600 | 480 | 157 | 152 |
| NOx | Drying oven | ppm | 230.0 | 184.00 | 136.000 | 136.000 |
South Plant and 2nd South Plant
No applicable equipment / facility
Handa Plant
| Substance | Equipment / Facility | Unit | Regulation | Voluntary Standard | Maximum | Average |
|---|---|---|---|---|---|---|
| SOx | 2-ton boiler | ppm | 1.5 | 1.2 | < 0.02 | < 0.02 |
| NOx | ppm | 180 | 144 | 37 | 30 | |
| Particulate matter | g/Nm3 | 0.1 | 0.08 | < 0.002 | < 0.002 |
Handa West Plant
| Substance | Equipment / Facility | Unit | Regulation | Voluntary Standard | Maximum | Average |
|---|---|---|---|---|---|---|
| SOx | 2-ton boiler | ppm | 1.5 | 1.2 | < 0.02 | < 0.02 |
| NOx | ppm | 180 | 144 | 40 | 28 | |
| Particulate matter | g/Nm3 | 0.1 | 0.08 | < 0.002 | < 0.002 |
Water Quality (Water Pollution Prevention Act, Sewerage Act, Prefectural/Municipal Regulations)
Automotive Business
Gunma Plant
Main Plant (Effluent is discharged into public rivers.)
| Item | Unit | Regulation (Prefectural Regulation) |
Voluntary Standard | Maximum | Minimum | Average |
|---|---|---|---|---|---|---|
| Hydrogen ion concentration (pH) | - | 5.8～8.6 | 6.1～8.3 | 7.4 | 7.1 | 7.2 |
| Biochemical oxygen demand (BOD) | mg/L | 25 | 20 | 4.3 | < 1.0 | 2.3 |
| Suspended solids (SS) | mg/L | 50 | 40 | 7.2 | < 1.0 | 2 |
| n-Hexane extract content (Mineral oil content) |
mg/L | 5 | 4 | < 1.0 | < 1.0 | 1.0 |
| n-Hexane extract content (Animal and plant oil and fat content) |
mg/L | 30 | 24 | < 1.0 | < 1.0 | 1.0 |
| Fluorine and its compounds | mg/L | 8 | 6.4 | 2.7 | < 0.2 | 1.0 |
| Zinc content | mg/L | 2 | 1.6 | 0.474 | 0.016 | 0.140 |
| Soluble iron content | mg/L | 10 | 8 | < 0.1 | < 0.1 | 0.1 |
| Soluble manganese content | mg/L | 10 | 8 | < 0.1 | < 0.1 | 0.1 |
| Phosphorus content | mg/L | 16 (8) | 6.4 | 3.4 | 0.1 | 1.2 |
| Nitrogen content | mg/L | 120 (60) | 48 | 7.3 | 1.3 | 4.9 |
Measured at two drainage outlets (New No. 2 and No. 5 waterways). Values for total phosphorus content and total nitrogen content are daily averages.
Yajima Plant (Effluent is discharged into public rivers.)
| Item | Unit | Regulation (Prefectural Regulation) |
Voluntary Standard | Maximum | Minimum | Average |
|---|---|---|---|---|---|---|
| Hydrogen ion concentration (pH) | - | 5.8～8.6 | 6.1～8.3 | 7.3 | 7.2 | 7.2 |
| Biochemical oxygen demand (BOD) | mg/L | 25 | 20 | 20.0 | 1.4 | 10.0 |
| Suspended solids (SS) | mg/L | 50 | 40 | 5.6 | < 1.0 | 3.7 |
| n-Hexane extract content (Mineral oil content) |
mg/L | 5 | 4 | < 1.0 | < 1.0 | 1.0 |
| n-Hexane extract content (Animal and plant oil and fat content) |
mg/L | 30 | 24 | < 1.0 | < 1.0 | 1.0 |
| Fluorine and its compounds | mg/L | 8 | 6.4 | 10.0 | 0.2 | 3.0 |
| Zinc content | mg/L | 2 | 1.6 | 0.773 | 0.211 | 0.560 |
| Soluble iron content | mg/L | 10 | 8 | < 0.1 | < 0.1 | 0.1 |
| Soluble manganese content | mg/L | 10 | 8 | < 0.1 | < 0.1 | 0.1 |
| Phosphorus content | mg/L | 16 (8) | 6.4 | 3.1 | 0.2 | 1.6 |
| Nitrogen content | mg/L | 120 (60) | 48 | 7.1 | 1.1 | 5.6 |
Values for total phosphorus content and total nitrogen content are daily averages.
Oizumi Plant (Effluent is discharged into public rivers.)
| Item | Unit | Regulation (Prefectural Regulation) |
Voluntary Standard | Maximum | Minimum | Average |
|---|---|---|---|---|---|---|
| Hydrogen ion concentration (pH) | - | 5.8～8.6 | 6.1～8.3 | 7.5 | 6.7 | 7.1 |
| Biochemical oxygen demand (BOD) | mg/L | 25 | 20 | 13.5 | 1.7 | 5.0 |
| Suspended solids (SS) | mg/L | 50 | 40 | 5.6 | < 1.0 | 2.1 |
| n-Hexane extract content (Mineral oil content) |
mg/L | 5 | 4 | < 1.0 | < 1.0 | 1.0 |
| n-Hexane extract content (Animal and plant oil and fat content) |
mg/L | 30 | 24 | < 1.0 | < 1.0 | 1.0 |
| Fluorine and its compounds | mg/L | 8 | 6.4 | < 0.2 | < 0.2 | 0.2 |
| Zinc content | mg/L | 2 | 1.6 | 0.264 | 0.020 | 0.120 |
| Soluble iron content | mg/L | 10 | 8 | 0.2 | < 0.1 | 0.1 |
| Soluble manganese content | mg/L | 10 | 8 | < 0.1 | < 0.1 | 0.1 |
| Phosphorus content | mg/L | 16 (8) | 6.4 | 0.4 | < 0.1 | 0.3 |
| Nitrogen content | mg/L | 120 (60) | 48 | 15.2 | 2.1 | 8.6 |
Values for total phosphorus content and total nitrogen content are daily averages.
Ota North Plant (Effluent is discharged into public rivers.)
| Item | Unit | Regulation (Prefectural Regulation) |
Voluntary Standard | Maximum | Minimum | Average |
|---|---|---|---|---|---|---|
| Hydrogen ion concentration (pH) | - | 5.8～8.6 | 6.1～8.3 | 7.7 | 7.5 | 7.6 |
| Biochemical oxygen demand (BOD) | mg/L | 25 | 20 | 1.9 | < 1.0 | 1.5 |
| Suspended solids (SS) | mg/L | 50 | 40 | 2.4 | < 1.0 | 1.7 |
| n-Hexane extract content (Mineral oil content) |
mg/L | 5 | 4 | < 1.0 | < 1.0 | 1.0 |
| n-Hexane extract content (Animal and plant oil and fat content) |
mg/L | 30 | 24 | < 1.0 | < 1.0 | 1.0 |
| Fluorine and its compounds | mg/L | 8 | 6.4 | < 0.2 | < 0.2 | 0.2 |
| Zinc content | mg/L | 2 | 1.6 | 0.036 | 0.019 | 0.028 |
| Soluble iron content | mg/L | 10 | 8 | 0.1 | < 0.1 | 0.1 |
| Soluble manganese content | mg/L | 10 | 8 | 0.2 | < 0.1 | 0.2 |
| Phosphorus content | mg/L | 16 (8) | 6.4 | < 0.1 | < 0.1 | 0.1 |
| Nitrogen content | mg/L | 120 (60) | 48 | 1.0 | 0.9 | 1.0 |
Values for total phosphorus content and total nitrogen content are daily averages.
Tokyo Office (Discharged into sewage.)
| Item | Unit | Regulation* | Voluntary Standard | Maximum | Minimum | Average |
|---|---|---|---|---|---|---|
| Hydrogen ion concentration (pH) | - | 5.0～9.0 | 5.4～8.6 | 8.7 | 7.8 | 8.3 |
| Biochemical oxygen demand (BOD) | mg/L | 600 | 480 | 390 | 24 | 131 |
| Suspended solids (SS) | mg/L | 600 | 480 | 490 | 34 | 147 |
| n-Hexane extract content (Mineral oil content) |
mg/L | 5 | 4 | 0 | 0 | 0 |
| n-Hexane extract content (Animal and plant oil and fat content) |
mg/L | 30 | 24 | 34* | 1 | 7 |
| Total phosphorus | mg/L | 16 | 12.8 | 6 | 3 | 4 |
| Total nitrogen | mg/L | 120 | 96 | 110 | 20 | 52 |
| Soluble manganese | mg/L | 10 | 8 | 0.02 | 0.00 | 0.01 |
| Cyanogen | mg/L | 1 | 0.8 | 0 | 0 | 0 |
[Effluent is discharged into public sewers]
- *
- Our regular water quality analysis revealed n-Hexane extract content (animal and plant oil and fat content) and total nitrogen levels that exceeded the exclusion criteria of the city’s sewage ordinance, as well as the voluntary criteria for pH. We are conducting a root cause analysis of the issue, including investigating necessary water discharge amounts and water inflow, and will explore and implement measures to rectify the situation.
Aerospace Company
Utsunomiya Plant
Main Plant (Discharged into sewage.)
| Item | Unit | Regulation | Voluntary Standard | Maximum | Minimum | Average |
|---|---|---|---|---|---|---|
| Hydrogen ion concentration (pH) | - | 5～9 | 5.4～8.6 | 8.4 | 6.8 | 7.6 |
| Suspended solids (SS) | mg/L | 600 | 480 | 433 | 1.0 | 56 |
| Biochemical oxygen demand (BOD) | mg/L | 600 | 480 | 436 | 0.5 | 71 |
| n-Hexane extract content (Mineral oil content) |
mg/L | 5 | 4 | 1.0 | 1.0 | 1.0 |
| n-Hexane extract content (Animal and plant oil and fat content) |
mg/L | 30 | 24 | 15.6 | 1.0 | 6.1 |
| Fluorine compounds | mg/L | 8 | 6.4 | 0.9 | 0.2 | 0.6 |
| Cyanogen | mg/L | 1 | 0.8 | 0.1 | 0.1 | 0.1 |
| Cadmium | mg/L | 0.03 | 0.024 | 0.005 | 0.003 | 0.003 |
| Total chromium | mg/L | 2 | 1.6 | 0.08 | 0.01 | 0.02 |
| Hexavalent chromium | mg/L | 0.1 | 0.08 | 0.02 | 0.00 | 0.01 |
Main Plant (Effluent is discharged into public rivers.)
| Item | Unit | Regulation | Voluntary Standard | Maximum | Minimum | Average |
|---|---|---|---|---|---|---|
| Hydrogen ion concentration (pH) | - | 5.8～8.6 | 6.0～8.3 | 8.1 | 6.7 | 7.4 |
| Suspended solids (SS) | mg/L | 50 | 40 | 1.2 | 1.0 | 1.1 |
| Biochemical oxygen demand (BOD) | mg/L | 30 | 24 | 10.7 | 0.6 | 2.2 |
| n-Hexane extract content (Mineral oil content) |
mg/L | 5 | 4 | 1.0 | 1.0 | 1.0 |
| n-Hexane extract content (Animal and plant oil and fat content) |
mg/L | 30 | 24 | 1.0 | 1.0 | 1.0 |
| Cyanogen | mg/L | 1 | 0.8 | 0.1 | 0.1 | 0.1 |
| Cadmium | mg/L | 0.03 | 0.024 | 0.003 | 0.003 | 0.003 |
| Total chromium | mg/L | 2 | 1.6 | 0.01 | 0.01 | 0.01 |
| Hexavalent chromium | mg/L | 0.5 | 0.4 | 0.0 | 0.0 | 0.0 |
South Plant (Discharged into sewage.)
| Item | Unit | Regulation | Voluntary Standard | Maximum | Minimum | Average |
|---|---|---|---|---|---|---|
| Hydrogen ion concentration (pH) | - | 5～9 | 5.4～8.6 | 8.6 | 7 | 7.5 |
| Suspended solids (SS) | mg/L | 600 | 480 | 317 | 1 | 64 |
| Biochemical oxygen demand (BOD) | mg/L | 600 | 480 | 386 | 1.7 | 96 |
| n-Hexane extract content (Mineral oil content) |
mg/L | 5 | 4 | 1.0 | 1.0 | 1.0 |
| n-Hexane extract content (Animal and plant oil and fat content) |
mg/L | 30 | 24 | 5.1 | 1.0 | 2.1 |
| Cyanogen | mg/L | 1 | 0.8 | 0.1 | 0.1 | 0.1 |
| Cadmium | mg/L | 0.03 | 0.024 | 0.003 | 0.003 | 0.003 |
| Total chromium | mg/L | 2 | 1.6 | 0.01 | 0.01 | 0.01 |
| Hexavalent chromium | mg/L | 0.1 | 0.08 | 0.02 | 0.02 | 0.02 |
South Plant (Effluent is discharged into public rivers.)
| Item | Unit | Regulation | Voluntary Standard | Maximum | Minimum | Average |
|---|---|---|---|---|---|---|
| Hydrogen ion concentration (pH) | - | 5.8～8.6 | 6.0～8.3 | 7.8 | 6.8 | 7.2 |
| Suspended solids (SS) | mg/L | 50 | 40 | 3.2 | 1.6 | 2.4 |
| Biochemical oxygen demand (BOD) | mg/L | 30 | 24 | 13 | 0.8 | 2.5 |
| n-Hexane extract content (Mineral oil content) |
mg/L | 5 | 4 | 1.0 | 1.0 | 1.0 |
| Cyanogen | mg/L | 1 | 0.8 | 0.1 | 0.1 | 0.1 |
| Cadmium | mg/L | 0.03 | 0.024 | 0.003 | 0.003 | 0.003 |
| Total chromium | mg/L | 2 | 1.6 | 0.01 | 0.01 | 0.01 |
| Hexavalent chromium | mg/L | 0.5 | 0.4 | 0.0 | 0.0 | 0.0 |
2nd South Plant (Discharged into sewage.)
| Item | Unit | Regulation | Voluntary Standard | Maximum | Minimum | Average |
|---|---|---|---|---|---|---|
| Hydrogen ion concentration (pH) | - | 5～9 | 5.4～8.6 | 8.6 | 7.2 | 7.8 |
| Suspended solids (SS) | mg/L | 600 | 480 | 388 | 2 | 48 |
| Biochemical oxygen demand (BOD) | mg/L | 600 | 480 | 256 | 2.4 | 56 |
| n-Hexane extract content (Mineral oil content) |
mg/L | 5 | 4 | 1.0 | 0.1 | 1.0 |
| n-Hexane extract content (Animal and plant oil and fat content) |
mg/L | 30 | 24 | 7.8 | 1.0 | 3.8 |
| Fluorine compounds | mg/L | 8 | 6.4 | 0.7 | 0.2 | 0.3 |
| Cyanogen | mg/L | 1 | 0.8 | 0.1 | 0.1 | 0.1 |
| Cadmium | mg/L | 0.03 | 0.024 | 0.003 | 0.003 | 0.003 |
| Total chromium | mg/L | 2 | 1.6 | 0.31 | 0.01 | 0.10 |
| Hexavalent chromium | mg/L | 0.1 | 0.08 | 0.02 | 0.02 | 0.02 |
2nd South Plant (Effluent is discharged into public rivers.)
| Item | Unit | Regulation | Voluntary Standard | Maximum | Minimum | Average |
|---|---|---|---|---|---|---|
| Hydrogen ion concentration (pH) | - | 5.8～8.6 | 6.0～8.3 | 7.8 | 6.3 | 6.9 |
| Suspended solids (SS) | mg/L | 50 | 40 | 1.2 | 1.0 | 1.1 |
| Biochemical oxygen demand (BOD) | mg/L | 30 | 24 | 6.2 | 1 | 3.6 |
| n-Hexane extract content(Mineral oil content) | mg/L | 5 | 4 | 1.0 | 1.0 | 1.0 |
| Cyanogen | mg/L | 1 | 0.8 | 0.1 | 0.1 | 0.1 |
| Cadmium | mg/L | 0.03 | 0.024 | 0.003 | 0.003 | 0.003 |
| Total chromium | mg/L | 2 | 1.6 | 0.01 | 0.01 | 0.01 |
| Hexavalent chromium | mg/L | 0.5 | 0.4 | 0.0 | 0.0 | 0.0 |
Handa Plant (Effluent is discharged into public rivers.)
| Item | Unit | Regulation | Voluntary Standard | Maximum | Minimum | Average |
|---|---|---|---|---|---|---|
| Hydrogen ion concentration (pH) | - | 5～9 | 5.8～8.3 | 8.0 | 6.2 | 6.9 |
| Suspended solids (SS) | mg/L | 30 | 24 | 8.0 | 1.0 | 1.6 |
| Biochemical oxygen demand (BOD) | mg/L | 25 | 20 | 8.0 | 0.5 | 2.9 |
| Chemical oxygen demand (COD) | mg/L | 25 | 20 | 11.0 | 1.0 | 4.5 |
| n-Hexane extract content (Mineral oil content) |
mg/L | 2 | 1.6 | 0.5 | 0.5 | 0.5 |
| Cyanogen | mg/L | 1 | 0.8 | 0.1 | 0.1 | 0.1 |
| Cadmium | mg/L | 0.03 | 0.024 | 0.005 | 0.005 | 0.005 |
| Total chromium | mg/L | 2 | 1.6 | 0.04 | 0.04 | 0.04 |
| Hexavalent chromium | mg/L | 0.5 | 0.4 | 0.04 | 0.04 | 0.04 |
【Discharged into public rivers.】
Handa West Plant (Effluent is discharged into public rivers.)
| Item | Unit | Regulation | Voluntary Standard | Maximum | Minimum | Average |
|---|---|---|---|---|---|---|
| Hydrogen ion concentration (pH) | - | 5.8～8.6 | 6.0～8.3 | 7.5 | 6.2 | 7.2 |
| Suspended solids (SS) | mg/L | 30 | 24 | 9.0 | 1.0 | 3.8 |
| Biochemical oxygen demand (BOD) | mg/L | 25 | 20 | 9.3 | 2.1 | 3.9 |
| Chemical oxygen demand (COD) | mg/L | 25 | 20 | 9.3 | 2.4 | 4.8 |
| n-Hexane extract content (Mineral oil content) |
mg/L | 2 | 1.6 | 0.5 | 0.5 | 0.5 |
| Cyanogen | mg/L | 0.5 | 0.5 | 0.1 | 0.1 | 0.1 |
| Cadmium | mg/L | 0.03 | 0.024 | 0.005 | 0.005 | 0.005 |
| Total chromium | mg/L | 2 | 1.6 | 0.04 | 0.04 | 0.04 |
| Hexavalent chromium | mg/L | 0.3 | 0.3 | 0.04 | 0.04 | 0.04 |
【Discharged into public rivers.】
Noise (Noise Regulation Act, Prefectural Regulations, Agreements)
Automotive Business
Gunma Plant
| Measurement Location | Unit | Regulation* (Night) |
Voluntary Standard |
Number of Measurement Sites |
Maximum |
|---|---|---|---|---|---|
| Main Plant | dB(A) | 55 | 54 | 18 | 50 |
| Yajima Plant | dB(A) | 55 | 54 | 20 | 55 |
| Oizumi Plant | dB(A) | 50 | 49 | 20 | 48 |
- *
- The Oizumi Plant exceeded regulatory levels due to intermittent noise. We have confirmed that this intermittent noise is no longer occurring.
Aerospace Company
Utsunomiya Plant
| Measurement Location | Unit | Regulation (Night) |
Voluntary Standard |
Number of Measurement Sites |
Maximum |
|---|---|---|---|---|---|
| Main Plant | dB(A) | 60 | 58 | 8 | 49 |
| South Plant | dB(A) | 50 | 48 | 3 | 40 |
| 2nd South Plant | dB(A) | 50 | 48 | 3 | 45 |
Handa Plant
| Measurement Location | Unit | Regulation (Night) |
Voluntary Standard |
Number of Measurement Sites |
Maximum |
|---|---|---|---|---|---|
| Handa Plant | dB(A) | 65 | 63 | 3 | 49 |
Handa West Plant
| Measurement Location | Unit | Regulation (Night) |
Voluntary Standard |
Number of Measurement Sites |
Maximum |
|---|---|---|---|---|---|
| Handa West Plant | dB(A) | 65 | 63 | 6 | 52 |
Kisarazu Office
| Measurement Location | Unit | Regulation (Night) |
Voluntary Standard |
Number of Measurement Sites |
Maximum |
|---|---|---|---|---|---|
| Kisarazu Office | dB(Z) | 50 | 48 | 2 | - * |
- *
- Excluded from calculations: spraying booths (due to not being in operation)
Vibration (Vibration Regulation Act, Prefectural Regulations, Agreements)
Automotive Business
Gunma Plant
| Measurement Location | Unit | Regulation (Night) |
Voluntary Standard |
Number of Measurement Sites |
Maximum |
|---|---|---|---|---|---|
| Main Plant | dB(A) | 65 | 64 | 18 | 44 |
| Yajima Plant | dB(A) | 65 | 64 | 21 | 47 |
| Oizumi Plant | dB(A) | 60 | 59 | 20 | 39 |
Aerospace Company
Utsunomiya Plant
| Measurement Location | Unit | Regulation (Night) |
Voluntary Standard |
Number of Measurement Sites |
Maximum |
|---|---|---|---|---|---|
| Main Plant | dB(Z) | 65 | 63 | 8 | 32 |
| South Plant | dB(Z) | 60 | 58 | 2 | < 30 |
| 2nd South Plant | dB(Z) | 60 | 58 | 3 | < 30 |
Handa Plant and Handa West Plant
| Measurement Location | Unit | Regulation (Night) |
Voluntary Standard |
Number of Measurement Sites |
Maximum |
|---|---|---|---|---|---|
| Handa Plant | dB(Z) | 70 | 68 | 3 | < 30 |
| Handa West Plant | dB(Z) | 70 | 68 | 5 | < 30 |
Kisarazu Office
| Measurement Location | Unit | Regulation (Night) |
Voluntary Standard |
Number of Measurement Sites |
Maximum |
|---|---|---|---|---|---|
| Kisarazu Office | dB(Z) | 55 | 53 | 2 | - * |
- *
- Excluded from calculations: spraying booths (due to not being in operation)
Odor (Offensive Odor Control Act)
Automotive Business
Gunma Plant
| Measurement Location | Regulation | Voluntary Standard |
Number of Measurement Sites |
Maximum |
|---|---|---|---|---|
| Main Plant | 21 | 20 | 7 | < 10 |
| Yajima Plant | 21 | 20 | 8 | < 10 |
| Oizumi Plant | 21 | 20 | 6 | < 10 |
[Odor index]
Chemical Substances Subject to Japan’s Pollutant Release and Transfer Register (PRTR) System: Amount Handled and Emissions
Automotive Business
Gunma Plant (Main Plant, Yajima Plant, Oizumi Plant, Subaru Test & Development Center (SKC))
| Chemical Substance | Amount Handled | Emissions | Amount Transferred | Amount Consumed | Amount Removed through Processing | Amount Recycled | ||
|---|---|---|---|---|---|---|---|---|
| Atmosphere | Water | Sewer | Waste | |||||
| Water-soluble zinc compounds | 11,526 | 0 | 127 | 0 | 0 | 9,221 | 0 | 0 |
| Ethylbenzene | 125,773 | 70,463 | 0 | 0 | 0 | 0 | 23,640 | 31,669 |
| Xylene | 162,262 | 62,155 | 0 | 0 | 0 | 51,666 | 21,096 | 27,345 |
| Trimethylbenzene | 340,239 | 94,752 | 0 | 0 | 0 | 181,568 | 18,997 | 44,923 |
| Toluene | 410,501 | 65,335 | 0 | 0 | 415 | 302,961 | 19,870 | 21,920 |
| Naphthalene | 2,194 | 1,382 | 0 | 0 | 0 | 0 | 361 | 450 |
| Nickel compounds | 691 | 0 | 19 | 0 | 327 | 345 | 0 | 0 |
| Hydrogen fluoride and its water-soluble salts | 7,700 | 0 | 7,007 | 0 | 0 | 693 | 0 | 0 |
| n-Hexane | 125,700 | 425 | 0 | 0 | 0 | 125,275 | 0 | 0 |
| Benzene | 21,717 | 73 | 0 | 0 | 0 | 21,644 | 0 | 0 |
| Formaldehyde | 12,432 | 5,994 | 0 | 0 | 1,363 | 0 | 3,413 | 1,662 |
| Manganese and its compounds | 4,567 | 0 | 123 | 0 | 2,160 | 2,284 | 0 | 0 |
| Dioxins Unit: mg-TEQ/year |
0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Methylnaphthalene | 8,551 | 43 | 0 | 0 | 0 | 8,474 | 0 | 0 |
| Total | 1,233,854 | 300,624 | 7,276 | 0 | 4,265 | 704,131 | 87,377 | 127,970 |
| 307,900 | ||||||||
[Unit: kg/year, excluding dioxins (mg-TEQ/year)]
Tokyo Office
| Chemical Substance | Amount Handled | Emissions | Amount Transferred | Amount Consumed | Amount Removed through Processing | Amount Recycled | ||
|---|---|---|---|---|---|---|---|---|
| Atmosphere | Water | Sewer | Waste | |||||
| Ethylbenzene | 10,511 | 0.11 | 0 | 0 | 398.9 | 0 | 0 | 0 |
| Xylene | 43,738 | 0.41 | 0 | 0 | 1,659.3 | 0 | 0 | 0 |
| Toluene | 134,229 | 4.14 | 0 | 0 | 5,105.6 | 0 | 0 | 0 |
| Benzene | 5,514 | 0.62 | 0 | 0 | 209 | 0 | 0 | 0 |
| n-Hexane | 21,232 | 5.28 | 0 | 0 | 797.8 | 0 | 0 | 0 |
| Trimethylbenzene | 44,122 | 0.11 | 0 | 0 | 1,675.3 | 0 | 0 | 0 |
| Heptane | 6,375 | 0.38 | 0 | 0 | 478.7 | 0 | 0 | 0 |
| Total | 265,721 | 11.05 | 0 | 0 | 10,325 | 0 | 0 | 0 |
| 11.05 | ||||||||
[Unit: kg/year]
Aerospace Company
| Chemical Substance | Amount Handled | Emissions | Amount Transferred | Amount Consumed | Amount Removed through Processing | Amount Recycled | ||
|---|---|---|---|---|---|---|---|---|
| Atmosphere | Water | Sewer | Waste | |||||
| Toluene | 25,915 | 9,099 | 0 | 0 | 2,587 | 14,227 | 0 | 0 |
| Xylene | 2,382 | 613 | 0 | 0 | 202 | 1,567 | 0 | 0 |
| Total | 28,297 | 9,712 | 0 | 0 | 2,789 | 15,794 | 0 | 0 |
[Unit: kg/year]