NSPS Notebook
Steel Plants: Electric Arc Furnaces Constructed After October 21, 1974, and On or Before August 17, 1983 -  Subpart AA

Applicability: eCFR Subpart AA [ecfr.gov]

This subpart applies to:
  1. Affected facilities at steel plants that produce carbon, alloy, or specialty steels: electric arc furnaces and dust-handling systems.
  2. Facilities that commence construction, modification, or reconstruction after Oct 21, 1974 and before August 17, 1983.
Affected facilities:
  1. Electric arc furnaces;
  2. Dust-handling systems.

Affected facilities that commenced construction, modification, or reconstruction after August 17, 1983 are subject to NSPS AAa.
Known Sources in NDEE Jurisdiction:
Date of Original Final Rule: 9/23/75
Amendments Dates: 05/12/2022 (Proposed Rule)
02/22/2005 (70 FR 8523)
10/17/2000 (65 FR 61758)
03/02/1999 (64 FR 10109)
05/17/1989 (54 FR 21344)
02/14/1989 (54 FR 6672)
10/31/1984 (49 FR 43843)
State Regulations: Title 129, Chapter 12, Section 001.32

Previously: Chapter 18, Section 001.10
Federal Regulations: 40 CFR 60.270
Related Rules:

NSPS - 40 CFR Part 60

Subpart N - Primary emissions from basic oxygen process furnaces
Subpart Na - Secondary emissions from basic oxygen process furnaces
Subpart AAa - Electric arc furnaces and argon-oxygen decarburization vessels (after Aug 17, 1983)

NESHAP - 40 CFR Part 63
Subpart CCC - Steel Pickling Plants
Subpart EEEEE - Iron and Steel Foundries (Major Sources)
Subpart FFFFF - Integrated Iron and Steel
Subpart YYYYY - Electric Arc Furnace Steelmaking
Subpart ZZZZZ - Iron and Steel Foundries (Area Sources)
Regulations and Federal Registers: eCFR Subpart AA [ecfr.gov]
(See attached file: 2A and 2Aa - Fed Reg - 5-16-2022 Proposed Rule.pdf)
(See attached file: NSPS Subpart AA - as of 2010-01-01.pdf)

SizeFile Name
330 KB 2A and 2Aa - Fed Reg - 5-16-2022 Proposed Rule.pdf
50 KB NSPS Subpart AA - as of 2010-01-01.pdf
FAQs, Fact Sheets, and Rule Summaries:
Other Information and Resources:
Notes:
Page Last Updated: 12/21/22