Explanation of values
The regulation values indicate the strictest values in the text of laws, regulations and pollution prevention agreements. For atmospheric emissions, the maximum values are indicated.
Regarding PRTR, Class I Designated Chemical Substances that are handled at a volume of a 1 t/year or more are listed.
Technical words in the charts
| NOx: Nitrogen oxide BOD: Biochemical oxygen demand SS: Concentration of suspended solids in water |
SOx: Sulfur oxide COD: Chemical oxygen demand |
Atmospheric pollutants
Okazaki Plant
| Atmospheric pollutants |
Equipment | Unit | Regulation | Actual (maximum) |
|---|---|---|---|---|
| NOx | Boiler (Large-type, NO2) |
ppm | 120 | 58 |
| (Other) | ppm | 120 | 74 | |
| Drying furnace (for coating) |
ppm | 120 | 60 | |
| Soot dust | Boiler | g/Nm³ | 0.1 | 0.002 |
| Drying furnace (for coating) |
g/Nm³ | 0.1 | 0.002 | |
| SOx (sulfur in fuel regulations) | wt% | 0.5 | 0 | |
| Formaldehyde | Drying furnace | mg/m³ | 30 | 5.7 |
Mizushima Plant
| Atmospheric pollutants |
Equipment | Unit | Regulation | Actual (maximum) |
|
|---|---|---|---|---|---|
| NOx | Boiler | (Steam) | ppm | 180 | 93 |
| (Small-type) | ppm | 150 | 41 | ||
| (Booth fan heating facility) | ppm | 100 | <15 | ||
| Drying furnace | ppm | 230 | 41 | ||
| Melting furnace | ppm | 200 | <27 | ||
| Metal heating furnace | ppm | 180 | 36 | ||
| Total amount | Nm³/h | 12.749 | 6.39955 | ||
| Soot dust | Boiler | g/Nm³ | 0.1 | 0.004 | |
| (Booth fan heating facility only) | g/Nm³ | 0.08 | <0.0005 | ||
| Drying furnace | g/Nm³ | 0.1 | 0.087 | ||
| Melting furnace | g/Nm³ | 0.1 | 0.001 | ||
| Metal heating furnace | g/Nm³ | 0.1 | <0.01 | ||
| SOx (sulfur in fuel regulations) | wt% | 0.19 | 0.017 | ||
Mizushima Plant (Harmful gases (Okayama Prefecture regulations))
| Atmospheric pollutants |
Unit | Regulation | Actual (maximum) |
|---|---|---|---|
| Acrylonitrile | ppm | 40 | <0.1 |
| Acetonitrile | ppm | 80 | <0.1 |
| Formaldehyde | ppm | 10 | 0.4 |
| Cyan and its compounds | ppm | 10 | - |
| Carbon disulfide | ppm | 40 | - |
| Phenol | ppm | 10 | 0.1 |
| Styrene | ppm | 200 | <0.1 |
| Benzene | ppm | 50 | 1.2 |
| Phosgene | ppm | 0.1 | - |
| Vinyl chloride | ppm | 500 | - |
Kyoto Plant – Kyoto
| Atmospheric pollutants |
Equipment | Unit | Regulation | Actual (maximum) |
|---|---|---|---|---|
| NOx | Boiler | ppm | - | 110 |
| Drying furnace | ppm | 230 | 23 | |
| Melting furnace | ppm | 200 | ≦80 | |
| Metal heating furnace | ppm | 180 | ≦91 | |
| Soot dust | Boiler | ppm | - | ≦0.0058 |
| Drying furnace | ppm | 0.2 | 0.0014 | |
| Melting furnace | ppm | 0.2 | 0.017 | |
| Metal heating furnace | ppm | 0.2 | 0.038 | |
| SOx(sulfur in fuel regulations) | wt% | 0.5 | 0 | |
| Dioxin | Drying furnace | ng-TEQ/Nm³ | 5 | 0.0012 |
| Melting furnace | ng-TEQ/Nm³ | 5 | 0.053 | |
Kyoto Plant - Shiga
| Atmospheric pollutants |
Equipment | Unit | Regulation | Actual (maximum) |
|---|---|---|---|---|
| NOx | Boiler | ppm | 150 | 54 |
| Soot dust | Boiler | g/Nm³ | 0.1 | ≦0.0037 |
Water pollutants
Okazaki Plant
| Water pollutants |
Unit | Regulation | Actual | |||
|---|---|---|---|---|---|---|
| Daily average shown in parenthese | Maximum | Minimum | Average | |||
| pH | - | 5.8～8.6 | 7.2 | 6.4 | 6.8 | |
| BOD | mg/L | 25 | (20) | 6.2 | 0.9 | 2.6 |
| COD | mg/L | 25 | (20) | 9.5 | 1.2 | 5.5 |
| SS | mg/L | 30 | (20) | 2.7 | 1.0 | 1.1 |
| Oil | mg/L | 2 | <0.5 | <0.5 | <0.5 | |
| Copper | mg/L | 0.5 | <0.01 | <0.01 | <0.01 | |
| Zinc | mg/L | 1 | 0.17 | 0.02 | 0.08 | |
| Soluble iron | mg/L | 3 | <0.1 | <0.1 | <0.1 | |
| Soluble manganese | mg/L | 3 | 0.5 | 0.1 | 0.2 | |
| Chromium | mg/L | 0.1 | <0.02 | <0.02 | <0.02 | |
| E-coli | Unit/cm³ | 300 | 34 | <30 | 30 | |
| Total nitrogen | mg/L | 15 | 9.60 | 3.50 | 6.10 | |
| Total phosphorus | mg/L | 2 | 0.27 | 0.03 | 0.08 | |
| Fluorine | mg/L | 4.0 | 1.60 | 0.20 | 0.70 | |
| COD total amount | kg/day | 61.6 | 31.1 | 0.0 | 12.4 | |
| Total amount of total nitrogen | kg/day | 71.5 | 45.1 | 0.0 | 15.0 | |
| Total amount of total phosphorus | kg/day | 8.6 | 1.3 | 0.0 | 0.2 | |
- Other than the above, the following were all below lower limits (not detected): Cyan, hexavalent chromium, cadmium, organic phosphorus, lead, phenol, trichloroethylene, 1,1,1-trichloroethane, alkyl mercury, PCB, selenium, carbon tetrachloride, 1,2-dichloroethane, 1,1-dichloroethylene, dichloromethane, cis-1,2-dichloroethylene, tetrachloroethylene, 1,1,2-trichloroethane, benzene, 1,3-dichloropropene, simazine, and thiuram, thiobencarb.
Mizushima Plant
| Water pollutants |
Unit | Regulation | Actual | ||||
|---|---|---|---|---|---|---|---|
| Daily average shown in parenthese | Maximum | Minimum | Average | ||||
| pH | Rivers | - | 6～8 | 7.6 | 6.8 | 7.2 | |
| Seas | - | 6～8 | 7.8 | 7.1 | 7.4 | ||
| BOD | Rivers | mg/L | 30 | (20) | 2.4 | <1.0 | <1.0 |
| COD | Rivers | mg/L | 30 | (20) | 11.0 | 2.3 | 4.7 |
| Seas | mg/L | 20 | (15) | 9.6 | 0.7 | 4.6 | |
| SS | Rivers | mg/L | 40 | (20) | 2.0 | <1.0 | <1.0 |
| Seas | mg/L | 40 | (20) | 2.0 | <1.0 | <1.0 | |
| Oil | Rivers | mg/L | 2 | (1) | 0.7 | ＜0.5 | ＜0.5 |
| Seas | mg/L | 2 | (1) | 0.6 | <0.5 | <0.5 | |
| Zinc | Rivers | mg/L | 2 | 0.14 | 0.14 | 0.14 | |
| Seas | mg/L | 2 | 0.13 | 0.13 | 0.13 | ||
| Soluble iron | Rivers | mg/L | 10 | <0.01 | <0.01 | <0.01 | |
| Seas | mg/L | 10 | <0.01 | <0.01 | <0.01 | ||
| Soluble manganese | Rivers | mg/L | 10 | 0.26 | 0.26 | 0.26 | |
| Seas | mg/L | 10 | <0.01 | <0.01 | <0.01 | ||
| E-coli | Rivers | Unit/cm³ | 3,000 | 1 | 1 | 1 | |
| Seas | Unit/cm³ | 3,000 | 3 | 1 | 2 | ||
| Total nitrogen | Rivers | mg/L | 120 | (60) | 11.0 | 4.7 | 7.8 |
| Seas | mg/L | 120 | (60) | 3.8 | 0.6 | 2.0 | |
| Total phosphorus | Rivers | mg/L | 16 | (8) | 6.50 | 0.90 | 3.40 |
| Seas | mg/L | 16 | (8) | <0.01 | <0.01 | <0.01 | |
| Boron | Rivers | mg/L | 10 | <0.1 | <0.1 | <0.1 | |
| Seas | mg/L | 230 | <0.1 | <0.1 | <0.1 | ||
| Fluorine | Rivers | mg/L | 8 | 1.4 | 1.3 | 1.4 | |
| Seas | mg/L | 15 | <0.2 | <0.1 | <0.1 | ||
| Ammonia, ammonium compounds, nitrites, and nitric compounds | Rivers | mg/L | 100 | 9.5 | 5.2 | 7.4 | |
| Seas | mg/L | 100 | 1.9 | 0.6 | 1.3 | ||
| COD total amount | kg/day | 272 | 41.4 | 6.5 | 15.1 | ||
| Total nitrogen Total amount | kg/day | 123 | 34.4 | 10.4 | 23.0 | ||
| Total phosphorus Total amount | kg/day | 35.5 | 18.2 | 1.9 | 9.7 | ||
- Other than the above, the following were all below lower limits (not detected): Copper, lead, hexavalent chromium, organic phosphorus, arsenic, phenol, and benzene.
Kyoto Plant – Kyoto
| Water pollutants |
Unit | Regulation | Actual | |||
|---|---|---|---|---|---|---|
| Maximum | Minimum | Average | ||||
| pH | - | 5～9 | 6.9 | 6.2 | 6.6 | |
| BOD | mg/L | 600 | 130.0 | 6.6 | 41.8 | |
| SS | mg/L | 600 | 25.0 | 5.0 | 13.5 | |
| Oil | Mineral oil | mg/L | 5 | <1.0 | <1.0 | <1.0 |
| Oil | Animal and vegetable oils | mg/L | 30 | 4.8 | 1.0 | 1.9 |
| Soluble iron | mg/L | 10 | 0.19 | 0.06 | 0.12 | |
| Soluble manganese | mg/L | 10 | 0.88 | 0.18 | 0.42 | |
| Total nitrogen | mg/L | 240 | 34.5 | 2.4 | 20.6 | |
| Total phosphorus | mg/L | 32 | 0.26 | 0.10 | 0.14 | |
| Fluorine | mg/L | 8 | 0.9 | 0.5 | 0.7 | |
| Arsenic | mg/L | 0.1 | <0.05 | <0.05 | <0.05 | |
| Dioxins | pg-TEQ/L | 10 | 0.0053 | 0.0053 | 0.0053 | |
- All drainage from processes is discharged to sewers, and the items for analysis have been determined in an agreement with the government of Kyoto City.
Kyoto Plant - Shiga
| Water pollutants |
Unit | Regulation | Actual | ||
|---|---|---|---|---|---|
| Maximum | Minimum | Average | |||
| pH | - | 5～9 | 8.2 | 6.3 | 7.4 |
| BOD | mg/L | 600 | 13.0 | <1.0 | 1.1 |
| SS | mg/L | 600 | 6.8 | <5.0 | 5.0 |
| Oil | mg/L | 5 | 1.6 | ＜1.0 | 1.1 |
| Total nitrogen | mg/L | 60 | 9.02 | 0.65 | 3.95 |
| Total phosphorus | mg/L | 10 | 0.73 | <0.1 | 0.29 |
- All drainage from processes is discharged to sewers, and the items for analysis have been determined in an agreement with the government of Konan City.
PRTR-designated pollutants
Okazaki Plant
| No. | Substance name | Unit | Amount handled | Emissions volume | Removal volume | Recycled volume | Consumed volume | Removal treatment volume | ||
|---|---|---|---|---|---|---|---|---|---|---|
| Atmosphere | Public waters | Sewage line | Waste | |||||||
| 1 | Water-soluble zinc compounds | kg/ year |
11,766 | 0 | 45 | 0 | 2,941 | 0 | 8,780 | 0 |
| 53 | Ethyl benzene | kg/ year |
72,296 | 48,670 | 0 | 0 | 1,305 | 7,469 | 9,268 | 5,584 |
| 80 | Xylene | kg/ year |
56,480 | 1,183 | 0 | 0 | 0 | 11 | 42,635 | 12,331 |
| 83 | Cumene | kg/ year |
2,426 | 175 | 0 | 0 | 85 | 0 | 0 | 2,166 |
| 300 | Toluene | kg/ year |
318,492 | 78,025 | 0 | 0 | 3,025 | 97,501 | 92,871 | 47,070 |
| 302 | Naphthalene | kg/ year |
2,486 | 276 | 0 | 0 | 80 | 0 | 0 | 2,102 |
| 309 | Nickel compounds | kg/ year |
1,808 | 0 | 145 | 0 | 1,030 | 0 | 633 | 0 |
| 374 | Hydrogen fluoride and its water-soluble salts | kg/ year |
4,003 | 0 | 327 | 0 | 0 | 0 | 0 | 3,676 |
| 392 | n-Hexane | kg/ year |
43,576 | 155 | 0 | 0 | 1 | 0 | 36,170 | 7,250 |
| 400 | Benzene | kg/ year |
7,946 | 27 | 0 | 0 | 0 | 0 | 6,409 | 1,510 |
| 412 | Manganese and its compounds | kg/ year |
3,726 | 0 | 219 | 0 | 1,250 | 0 | 2,256 | 0 |
| 629 | Cyclohexane | kg/ year |
3,394 | 506 | 0 | 0 | 2 | 0 | 0 | 2,886 |
| 664 | Organic tin compounds（※） | kg/ year |
3,800 | 0 | 0 | 0 | 570 | 0 | 3,230 | 0 |
| 691 | Trimethyl benzene | kg/ year |
81,631 | 14,557 | 0 | 0 | 1,541 | 2,100 | 36,296 | 27,137 |
| 731 | Heptane | kg/ year |
2,020 | 390 | 0 | 0 | 240 | 0 | 0 | 1,390 |
| 737 | Methyl isobutyl ketone | kg/ year |
61,203 | 24,274 | 0 | 0 | 2,981 | 18,672 | 13,438 | 1,838 |
| Total | kg/ year |
677,053 | 168,238 | 736 | 0 | 15,051 | 125,753 | 251,986 | 114,940 | |
※ Excluding bis(tributyltin) oxide.
- Amount handled=Emission+transport volume+recycled volume+consumed volume+removal processed volume
- Consumed volume: Volume transformed to other substances by means of a reaction or contained within a product
- Removal treatment volume: Volume transformed to other substances by means of incineration, decomposition or reaction
Mizushima Plant
| No. | Substance name | Unit | Amount handled | Emissions volume | Removal volume | Recycled volume | Consumed volume | Removal treatment volume | ||
|---|---|---|---|---|---|---|---|---|---|---|
| Atmosphere | Public waters | Sewage line | Waste | |||||||
| 1 | Water-soluble zinc compounds | kg/ year |
12,920 | 0 | 126 | 0 | 3,995 | 0 | 8,800 | 0 |
| 53 | Ethyl benzene | kg/ year |
17,934 | 4,398 | 0 | 0 | 309 | 4,660 | 8,161 | 405 |
| 80 | Xylene | kg/ year |
45,659 | 4,839 | 0 | 0 | 333 | 5,049 | 35,016 | 423 |
| 188 | N, N- Dicyclohexylamine | kg/ year |
663 | 0 | 0 | 0 | 663 | 0 | 0 | 0 |
| 239 | Organic tin compounds | kg/ year |
4,440 | 0 | 0 | 0 | 222 | 0 | 4,218 | 0 |
| 300 | Toluene | kg/ year |
80,855 | 2,086 | 0 | 0 | 110 | 11,262 | 67,134 | 263 |
| 309 | Nickel compounds | kg/ year |
2,918 | 0 | 350 | 0 | 1,615 | 0 | 953 | 0 |
| 392 | n-Hexane | kg/ year |
29,102 | 154 | 0 | 0 | 0 | 0 | 28,948 | 0 |
| 400 | Benzene | kg/ year |
4,859 | 15 | 0 | 0 | 0 | 0 | 4,844 | 0 |
| 407 | Polyoxyethylene alkyl ether（※2） | kg/ year |
8,745 | 0 | 87 | 0 | 8,658 | 0 | 0 | 0 |
| 411 | Formaldehyde | kg/ year |
1,064 | 347 | 0 | 0 | 0 | 0 | 0 | 717 |
| 412 | Manganese and its compounds | kg/ year |
5,665 | 0 | 256 | 0 | 2,696 | 0 | 2,697 | 15 |
| 438 | Methylnaphthalene | kg/ year |
10 | 10 | 0 | 0 | 0 | 0 | 0 | 0 |
| 691 | Trimethyl benzene | kg/ year |
39,709 | 6,510 | 0 | 0 | 408 | 0 | 31,969 | 822 |
| 731 | Heptane | kg/ year |
11,312 | 166 | 0 | 0 | 0 | 0 | 11,146 | 0 |
| Total | kg/ year |
265,853 | 18,525 | 819 | 0 | 19,008 | 20,971 | 203,885 | 2,645 | |
※2 Limited to alkyl groups with carbon numbers ranging from 12 to 15 and their mixtures.
- Amount handled=Emission+transport volume+recycled volume+consumed volume+removal processed volume
- Consumed volume: Volume transformed to other substances by means of a reaction or contained within a product
- Removal treatment volume: Volume transformed to other substances by means of incineration, decomposition or reaction
Kyoto Plant
| No. | Substance name | Unit | Amount handled | Emissions volume | Removal volume | Recycled volume | Consumed volume | Removal treatment volume | ||
|---|---|---|---|---|---|---|---|---|---|---|
| Atmosphere | Public waters | Sewage line | Waste | |||||||
| 37 | Bisphenol A | kg/ year |
6,521 | 0 | 0 | 0 | 0 | 0 | 6,507 | 14 |
| 53 | Ethyl benzene | kg/ year |
4,657 | 2 | 0 | 0 | 0 | 0 | 4,656 | 0 |
| 80 | Xylene | kg/ year |
19,836 | 6 | 0 | 0 | 0 | 0 | 19,830 | 0 |
| 258 | Hexamethylenetetramine | kg/ year |
29,246 | 0 | 0 | 0 | 0 | 0 | 20,429 | 8,817 |
| 300 | Toluene | kg/ year |
73,652 | 25 | 0 | 0 | 0 | 0 | 73,627 | 0 |
| 349 | Phenol | kg/ year |
4,253 | 0 | 0 | 0 | 0 | 0 | 3,401 | 852 |
| 392 | n-Hexane | kg/ year |
9,165 | 3 | 0 | 0 | 0 | 0 | 9,162 | 0 |
| 400 | Benzene | kg/ year |
2,477 | 1 | 0 | 0 | 0 | 0 | 2,476 | 0 |
| 411 | Formaldehyde | kg/ year |
944 | 0 | 0 | 0 | 0 | 0 | 0 | 944 |
| 580 | Alpha-Alkyl-omega-hydroxypoly(oxyethylene)（※3） | kg/ year |
1,546 | 0 | 0 | 0 | 1,546 | 0 | 0 | 0 |
| 626 | Diethanolamine | kg/ year |
10,837 | 0 | 0 | 0 | 10,837 | 0 | 0 | 0 |
| 683 | Triisopropanolamine | kg/ year |
4,197 | 0 | 0 | 0 | 4,197 | 0 | 0 | 0 |
| 691 | Trimethyl benzene | kg/ year |
20,542 | 6 | 0 | 0 | 0 | 0 | 20,536 | 0 |
| Total | kg/ year |
187,873 | 42 | 0 | 0 | 16,580 | 0 | 160,624 | 10,628 | |
| 243 | Dioxins | mg-TEQ/year | 2 | |||||||
※3 Alkyl groups with carbon numbers ranging from 9 to 11 and their mixtures. Limited to those with a number average molecular weight of less than 1,000.
Plant Information
| Okazaki Plant | Mizushima Plant | Kyoto Plant | ||
|---|---|---|---|---|
| Kyoto | Shiga | |||
| Location | 1, Aza-Nakashinkiri, Hashime-cho, Okazaki, Aichi-pref. | 1, Kaigan-dori 1-chome, Mizushima, Kurashiki, Okayama-pref. | 1, Uzumasatatsumi-cho, Ukyo-ku, Kyoto, Kyoto-pref. | 2-1, Kosuna-cho, Konan, Shiga-pref. |
| Established | 1977 | 1943 | 1944 | 1979 |
| Main production items | Passenger car | Passenger car, Kei-car, automotive engines and transmissions | Automotive engines and transmissions | Automotive engines |
| Production process | Pressing, welding assembly, painting, assembly, plastic molding | Casting, forging, machining, pressing, welding assembly, painting, assembly | Casting, machining, assembly | Machining, assembly |
| Date of acquisition of ISO14001 | November 1998 | December 1998 | November 1998 | November 1998 |