Air Toxics Notebook
Mineral Wool Production -  Subpart DDD

Applicability: eCFR Subpart DDD [ecfr.gov]

This subpart applies to:
  1. Cupolas and curing ovens at mineral wool production facilities located at Major Sources* of HAPs.
*Major Sources of HAPs emit or have the potential to emit:
  • ≥ 10 tons/year of any single HAP; or
  • ≥ 25 tons/year of total HAPs.
  • Area Sources emit less than Major Sources.
Rules apply to small, area sources? No
Known Sources in NDEQ Jurisdiction: No
Date of Original Final Rule: 6/1/99
Amendments Dates: 07/29/2015 - Final Rule
06/23/2003 - Final Rule; Amendments
06/01/1999 - Final Rule
State Regulations (Title 129): As of September 28, 2022: Title 129, Chapter 13, 002.40

Previously:Title 129, Chapter 28, Section 001.38.

Sources are also responsible for ensuring they are in compliance with current federal requirements found for this subpart in the CFR.
Federal Regulations: 40 CFR 63.1175
Related Rules:

NSPS - 40 CFR Part 60

Subpart HHH - Synthetic Fiber Production
Subpart PPP - Wool Fiberglass Insulation

NESHAP - 40 CFR Part 63
Subpart NN - Wool Fiberglass Manufacturing - Area Sources
Subpart NNN - Wool Fiberglass Manufacturing - Major Sources
Subpart HHHH - Wet-formed Fiberglass Mat Production
Regulations and Federal Registers:
eCFR Subpart DDD [ecfr.gov]

(See attached file: 3D - Fed. Reg. 2015-07-29 - Final Rule.pdf)

(See attached file: 3D - Fed. Reg. 2003-06-23 - Amendments.pdf)

(See attached file: 3D - Fed. Reg. 1999-06-01 - Final Rule.pdf)

SizeFile Name
605 KB 3D - Fed. Reg. 2015-07-29 - Final Rule.pdf
281 KB 3D - Fed. Reg. 2003-06-23 - Amendments.pdf
316 KB 3D - Fed. Reg. 1999-06-01 - Final Rule.pdf
Forms:
Important Dates: Source Classification
  1. Existing = Commence construction or reconstruction on or before November 25, 2011
  2. New = Commence construction or reconstruction after November 25, 2011.
  3. For Table 2, Rows 1-4:
    1. Existing = Commence construction or reconstruction on or before May 8, 1997
    2. New = Commence construction or reconstruction after May 8, 1997
Initial Notification
  1. Within 120 days of becoming subject to this subpart.
Compliance Date
  1. See Table 2
Notice of Intent to Test
  1. 60 days notice prior to any planned performance test.
Notification of Compliance Status
  1. Within 60 days of the performance test.
Compliance Reports
  1. Semiannual
  2. Submitted within 30 days of the end of the reporting period
FAQs, Fact Sheets, and Rule Summaries: EPA's Subpart DDD Website [epa.gov] - contains federal register notices and technical information
Presentations, Training and Articles:
Other Information and Resources:
Notes:
Page Last Updated: 11/2/22