Chapter NR 254 - Iron and steel manufacturing
- Section NR 254.001 - Purpose
- Section NR 254.0015 - Applicability
- Section NR 254.002 - General definitions
- Section NR 254.003 - Alternative effluent limitations
- Section NR 254.004 - Calculation of pretreatment standards
- Section NR 254.005 - Compliance dates
- Section NR 254.006 - Removal credits for phenols (4AAP)
- Subchapter I - Cokemaking Subcategory (§§ 254.01 — 254.017)
- Subchapter II - Sintering Subcategory (§§ 254.02 — 254.026)
- Subchapter III - Ironmaking Subcategory (§§ 254.03 — 254.036)
- Subchapter IV - Steelmaking Subcategory (§§ 254.04 — 254.047)
- Subchapter V - Vacuum Degassing Subcategory (§§ 254.05 — 254.056)
- Subchapter VI - Continuous Casting Subcategory (§§ 254.06 — 254.066)
- Subchapter VII - Hot Forming Subcategory (§§ 254.07 — 254.077)
- Subchapter VIII - Salt Bath Descaling Subcategory (§§ 254.08 — 254.087)
- Subchapter IX - Acid Pickling Subcategory (§§ 254.09 — 254.097)
- Subchapter X - Cold Forming Subcategory (§§ 254.10 — 254.107)
- Subchapter XI - Alkaline Cleaning Subcategory (§§ 254.11 — 254.117)
- Subchapter XII - Hot Coating Subcategory (§§ 254.12 — 254.127)