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Environmental Data
for Each
Production Base

Environmental Data for Each Production Base (FY2024 results)

Fuji Area

[Including the Head Office]
Site: 580,440m2
Buildings (Total):
389,403m2

Air pollution

NOx: Nitrogen oxide, SOx: Sulfur oxide

Equipment Item Unit Regulatory
limit
(including
exceptions)		 Measured values
Maximum Average
Compact boiler (22 units) Dust and soot g/Nm3 0.05 0.001 0.00003
NOx ppm 100 45 29
SOx Nm3/h 0.002 0 0
Metal-heating furnace
(16 units)		 Dust and soot g/Nm3 0.05 0.005 0.001
NOx ppm 150 27 16
SOx Nm3/h 0.018 0 0
Steel-heating furnace
(4 units)		 Dust and soot g/Nm3 0.05 0.001 0.0002
NOx ppm 150 7 3
SOx Nm3/h 0.026 0 0
Aluminum-melting furnace
(11 units)		 Dust and soot g/Nm3 0.06 0.0031 0.006
NOx ppm 150 42 10.895
SOx Nm3/h 0.019 0 0.000
Dioxin ng-TEQ/Nm3 5 1.6 0.278
Drying kiln (1 unit) Dust and soot g/Nm3 0.05 0.002 0.002
NOx ppm 56 15 15.000
SOx Nm3/h 0.0048 0 0.000
Dioxin ng-TEQ/Nm3 5 0.0000011 0.0000011
Drying combustion furnace
(1 unit)		 Dioxin ng-TEQ/Nm3 5 0.0000018 0.0000018

Water quality

Figures shown in brackets ( ) for the regulatory limit are daily averages

Item Unit Regulatory
limit
(including
exceptions)		 Measured values
Maximum Average
Hydrogen ion concentration (pH) ー 5.8 -8.6 6.8 6.9
Biochemical oxygen demand (BOD) mg/L 20（15） 4 3
Chemical oxygen demand (COD) mg/L 20（15） 6 5.1
Suspended solids (SS) mg/L 20（10） 2 2
n-hexane extracts (mineral oils) mg/L 4 0 0
Copper mg/L 0.1 0 0
Zinc mg/L 1.0 0.07 0.05
Coliform count units/mL 3,000 4 2
Trichloroethylene mg/L 0.3 0 0
Dichloromethane mg/L 0.02 0 0
Boron mg/L 10 0 0
Fluorine mg/L 15 0 0
Ammoniacal nitrogen
Nitrate-nitrogen
Nitrite-nitrogen		 mg/L 100 1.6 1
0.7 0.35
0.39 0.23

Fujinomiya Area

Site: 67,698m2
Buildings (Total):
66,756m2

Air pollution

NOx: Nitrogen oxide, SOx: Sulfur oxide

Equipment Item Unit Regulatory
limit
(including
exceptions)		 Measured values
Maximum Average
Compact boiler (6 units) Dust and soot g/Nm3 0.05 0.007 0.0028333
NOx ppm 100 79 74
SOx Nm3/h 0.01 0 0
Metal-heating furnace
(3 units)		 Dust and soot g/Nm3 0.05 0.037 0.00975
NOx ppm 150 74 35
SOx Nm3/h 0.01 0 0

Water quality

Figures shown in brackets ( ) for the regulatory limit are daily averages

Item Unit Regulatory
limit
(including
exceptions)		 Measured values
Maximum Average
Hydrogen ion concentration (pH) ー 5.8 -8.6 7 6.9
Biochemical oxygen demand (BOD) mg/L 20（15） 1 0.5
Chemical oxygen demand (COD) mg/L 20（15） 1.3 1.3
Suspended solids (SS) mg/L 20（15） 0 0
n-hexane extracts (mineral oils) mg/L 5 0 0
Phenols mg/L 5 0 0
Copper mg/L 3 0 0
Zinc mg/L 2 0.05 0.05
Soluble iron mg/L 10 0 0
Soluble manganese mg/L 10 0 0
Chromium mg/L 2 0 0
Coliform count units/mL 3,000 1 0.5
1, 1, 1-trichloroethane mg/L 0.001 0 0
Boron mg/L 10 0 0
Ammoniacal nitrogen
Nitrate-nitrogen
Nitrite-nitrogen		 mg/L 100 0.4 0.40
0 0
0 0

Yagi Area

Site: 233,323m2
Buildings (Total):
68,277m2

Air pollution

NOx: Nitrogen oxide, SOx: Sulfur oxide

Equipment Item Unit Regulatory
limit
(including
exceptions)		 FY2024
Maximum Average
Continuous
carburizing furnace		 Dust and soot g/Nm3 0.1 ND ND
NOx ppm 150 55 28
SOx Nm3/h 5.00 ND ND

Water quality

Figures shown in brackets ( ) for the regulatory limit are daily averages

Item Unit Regulatory
limit
(including
exceptions)		 FY2024
Maximum Average
Hydrogen ion concentration (pH) ー 5.8 -8.6 7.4 7.1
Biochemical oxygen demand (BOD) mg/L 20（10） 1 1
Chemical oxygen demand (COD) mg/L 30（20） 1.4 0.6
Suspended solids (SS) mg/L 30（20） 0.8 0.5
n-hexane extracts (mineral oils) mg/L 2.5 Undetected Undetected
Phenols mg/L 0.3 Undetected Undetected
Copper mg/L 1 Undetected Undetected
Zinc mg/L 1 Undetected Undetected
Soluble iron mg/L 2.5 Undetected Undetected
Soluble manganese mg/L 2.5 Undetected Undetected
Chromium mg/L 0.5 Undetected Undetected
Coliform count units/mL 1,500 Undetected Undetected
Ammoniacal nitrogen mg/L 16（12） 8.6 4.7
Nickel mg/L 0.5 Undetected Undetected
Phosphorus mg/L 1（0.5） Undetected Undetected
Boron mg/L 10 Undetected Undetected
Fluorine mg/L 8 Undetected Undetected

JATCO
MEXICO
S.A. DE C.V.

Air pollution

NOx: Nitrogen oxide

Equipment Item Unit Regulatory
limit
(including
exceptions)		 Measured values
Maximum Average
Metal-heating furnace Dust and soot g/Nm3 1,022.5 0.054 0.0049
NOx ppm 375.0 – –
Aluminum-melting furnace Dust and soot g/Nm3 – 0.146 0.013
NOx ppm 375.0 53.71 9
Metal-heating furnace Dust and soot g/Nm3 1,113.8 11.38 10.6
NOx ppm – – –

Water quality

Item Unit Regulatory
limit
(including
exceptions)		 Measured values
Maximum Average
Hydrogen ion concentration (pH) ー 5–10 7.9 7.7
Biochemical oxygen demand (BOD) mg/L 150 33.6 28
Chemical oxygen demand (COD) mg/L 320 59.2 51
Suspended solids (SS) mg/L 150 10 10
n-hexane extracts (mineral oils) mg/L 5 5 5
Phenols mg/L n/a
Copper mg/L 4 2.2 2.2
Zinc mg/L 10 5.5 5.5

JATCO
(Guangzhou)
Automatic
Transmission
Ltd.

Air pollution

TSP: Total suspended particulates

Equipment Item Unit Regulatory
limit
(including
exceptions)		 Measured values
Maximum Average
Heat treatment
line		 TSP mg/m3 120 2.6 1.55
Nonmethane hydrocarbons mg/m3 120 23 5.45

Water quality

Item Unit Regulatory
limit
(including
exceptions)		 Measured values
Maximum Average
Hydrogen ion concentration (pH) ー 6.0–9.0 7.2 7.1
Biochemical oxygen demand (BOD) mg/L 300 18.8 3
Chemical oxygen demand (COD) mg/L 500 193 78.5
Suspended solids (SS) mg/L 400 72 46
n-hexane extracts (mineral oils) mg/L 20 0.4 0.2

JATCO
(Suzhou)
Automatic
Transmission
Ltd.

Air pollution

TSP: Total suspended particulates

Equipment Item Unit Regulatory
limit
(including
exceptions)		 Measured values
Maximum Average
Heat treatment
line		 TSP mg/m3 120 2.1 1.9
Nonmethane hydrocarbons mg/m3 60 51.0 22.7
Machining line TSP mg/m3 120 2.0 1.8

Water quality

Item Unit Regulatory
limit
(including
exceptions)		 Measured values
Maximum Average
Hydrogen ion concentration (pH) ー 6.0–9.0 7.4 7.1
Biochemical oxygen demand (BOD) mg/L 300 92.4 86.6
Chemical oxygen demand (COD) mg/L 500 230 157.0
Suspended solids (SS) mg/L 400 15 15
n-hexane extracts (mineral oils) mg/L 100 5 4.52

JATCO
(Thailand)
Co., Ltd.

Air pollution

TSP: Total suspended particulates

Equipment Item Unit Regulatory
limit
(including
exceptions)		 Measured values
Maximum Average
Vacuum carburizing furnace VF No. 1 TSP mg/m3 400 20.26 -
Vacuum carburizing furnace VF No. 2 TSP mg/m3 320 24.48 -

Water quality

Item Unit Regulatory
limit
(including
exceptions)		 Measured values
Maximum Average
Hydrogen ion concentration (pH) ー 5.5-9.0 7.90 7.66
Biochemical oxygen demand (BOD) mg/L 500 54.0 26.80
Chemical oxygen demand (COD) mg/L 750 162 110.5
Suspended solids (SS) mg/L 200 39 16.3
n-hexane extracts (mineral oils) mg/L 10 4.00 3.08

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