Performance and Status

Current status of investment in environmental safety

EHS Investment Status

Investment Amount by Year (1M Won)

Energy usage

GHG Emissions

Waste and Recycling

Water usage

Air Quality Preservation Status (Ochang Plant)

* As of 2025

대기 환경 보전 - 구분, 단위, 배출 허용 기준, 배출 농도, 배출 허용 기준 대비 배출 농도로 구분되어 있습니다.
Type	Unit	Criteria for allowing discharge	Concentration-discharge	Concentration-discharge compared to the allowable discharge standard.
Dust	mg/S㎥	30	2.85	10%
Nitrogen oxide	ppm	40	11	28%
Sulfur oxides	ppm	35	0	0
Ammonia	mg/S㎥	2	0.75	38%
Nickel	ppm	30	0.1	0%

Dust

10% 2.85mg/S㎥

Nitrogen oxide

28% 11ppm

Sulfur oxides

0% 0ppm

Ammonia

38% 0.75mg/S㎥

Nickel

0% 0.1ppm

Average 15% less of permitted emissions

Air Quality Preservation Status (Pohang Plant)

* As of 2025

대기 환경 보전 - 구분, 단위, 배출 허용 기준, 배출 농도, 배출 허용 기준 대비 배출 농도로 구분되어 있습니다.
Type	Unit	Criteria for allowing discharge	Concentration-discharge	Concentration-discharge compared to the allowable discharge standard.
Dust	mg/S㎥	30	0.33	1%
Nitrogen oxide	ppm	40	24.56	61%
Sulfur oxides	ppm	10	0	0%
Nickel	mg/S㎥	2	0.04	2%

Dust

1% 0.33mg/S㎥

Nitrogen oxide

61% 24.56ppm

Sulfur oxides

0% 0ppm

Nickel

2% 0.04mg/S㎥

Average 16.0% less of permitted emissions

Water Quality Preservation Status (Ochang Plant)

* As of 2025

대기 환경 보전 - 구분, 단위, 배출 허용 기준, 배출 농도, 배출 허용 기준 대비 배출 농도로 구분되어 있습니다.
Type	Unit	Criteria for allowing discharge	Concentration-discharge	Concentration-discharge compared to the allowable discharge standard.
BOD	㎎/ℓ	100	1.1	1%
TOC		60	5.3	9%
SS		100	2.0	2%

BOD

1% 1.1ppm

TOC

9% 5.3ppm

2% 2.0ppm

Average 4% less of permitted emissions

Water Quality Preservation Status (Pohang Plant)

* As of 2025

수질 환경 보전 - 구분, 단위, 배출 허용 기준, 배출 농도, 배출 허용 기준 대비 배출 농도로 구분되어 있습니다.
Type	Unit	Criteria for allowing discharge	Concentration-discharge	Concentration-discharge compared to the allowable discharge standard.
BOD	㎎/ℓ	10	0.45	5%
TOC		25	0.2	1%
SS		10	0.1	1%
T-N		20	0	0%
T-P		2	0	0%

※ Application of Water Quality Standards for Public Sewage Treatment Facilities in Pohang

BOD

5% 0.45ppm

TOC

1% 0.2ppm

1% 0.1ppm

T-N

0% 0ppm

T-P

0% 0ppm

Average 7% less of permitted emissions