Boilers & Process Heaters - Major Sources - Commercial, Industrial & Institutional
Air Toxics Notebook
Boilers & Process Heaters - Major Sources - Commercial, Industrial & Institutional
eCFR Subpart DDDDD - [ecfr.gov]
This subpart applies to:
- new, reconstructed, and existing industrial, commercial, and institutional boilers and process heaters located at Major Sources of hazardous air pollutants (HAPs)*.
Not subject to this subpart:
- Electric utility steam-generating units (EGUs)
- Recovery boilers/furnaces
- Boilers or process heaters used specifically for research and development
- Hot water heaters
- Temporary boilers
- Refining kettles
- Ethylene cracking furnaces
- Blast furnace stoves
- Blast furnace gas fuel-fired boilers and process heaters
- Hazardous waste boilers
*Major Sources of HAPs emit or have the potential to emit:
- ≥ 10 tons per year of a single HAP, or
- ≥ 25 tons per year of total HAPs.
- Area Sources emit less than Major Sources.
10/06/2022 - Final Rule
07/08/2020 - Proposed Amendments
11/20/2015 - Final Rule; Final Action on Reconsideration
01/31/2013 - Final Rule
12/23/2011 - Proposed Rule
05/18/2011 - Delay of effective date during Reconsideration
03/21/2011 - Final Rule, Reconsideration of Final Rule
06/04/2010 - Proposed Rule
As of September 28, 2022: Title 129, Chapter 13, Section 002.80
Previously: Title 129, Chapter 28, Section 001.70.
Sources are also responsible for ensuring they are in compliance with current federal requirements found for this subpart in the CFR.
NSPS – 40 CFR Part 60
Subpart D, Da, Db, Dc - Fossil fuel-fired, electric utility, large and small industrial, commercial, and institutional steam generating units.
Subpart CCCC - Commercial, Industrial Solid Waste Incinerators - New units
Subpart DDDD - Commercial, Industrial Solid Waste Incinerators - Existing Units
NESHAP - 40 CFR Part 63
Subpart JJJJJJ - Boilers (area sources)
eCFR Subpart DDDDD - [ecfr.gov]
Source Classification
- Existing Source:
- Commenced construction or reconstruction on or before June 4, 2010.
- New Source:
- Commenced construction or reconstruction after June 4, 2010.
Initial Notification
- If startup date is before Jan 31, 2013:
- Must notify by May 31, 2013.
- If startup date is on or after Jan 31, 2013:
- Must notify within 15 days of startup.
Compliance Dates
- Existing source:
- Must comply by Jan 31, 2016.
- New or reconstructed source:
- Must comply by April 1, 2013 or upon startup, whichever is later.
Notice of Intent to Test
- 60 days prior to test.
Compliance Status Notification
- No later than 60 days after the test and/or other initial compliance demonstration(s).
Compliance Reports
- Semiannual for sources with emissions or operating limits.
- Sources that are required only to do biennial, annual, or 5-year tune-ups may instead submit biennial, annual, or 5-year reports, respectively.
- The first report:
- Must cover the period from the compliance date to either Jan 31 or July 31, whichever is at least 180 days after the compliance date.
- Must be submitted no later than Jan 31 or July 31, whichever follows the end of the first calendar half after the compliance date.
- Subsequent reports:
- Must cover the period from Jan 1 through June 30 or July 1 through Dec 31.
- Must be submitted no later than July 31 or Jan 31, whichever comes first.
EPA's Boiler & Process Heater Website [epa.gov] - contains federal registers, regulatory background, and webinar information.
EPA Sponsored Combustion Portal [combustionportal.org] - Federal & state compliance information & sustainability content for combustion processes
582 KB | 5D - DOE Guidance for Calculated Emission Credits.pdf |
1,399 KB | 5D & 6J - Congressional Report on Proposal - 10-21-2010.pdf |